CN106502196B - Electric desalting equipment oil-water interfaces on-line monitoring and control method and system - Google Patents

Electric desalting equipment oil-water interfaces on-line monitoring and control method and system Download PDF

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CN106502196B
CN106502196B CN201611094705.XA CN201611094705A CN106502196B CN 106502196 B CN106502196 B CN 106502196B CN 201611094705 A CN201611094705 A CN 201611094705A CN 106502196 B CN106502196 B CN 106502196B
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sampling
valve
pipe
tank
desalination
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CN106502196A (en
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高翔
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Kaitai Chuzhou Fluid Control Co ltd
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/058—Safety, monitoring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/14—Plc safety
    • G05B2219/14006—Safety, monitoring in general

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

The present invention relates to a kind of electric desalting equipment oil-water interfaces on-line monitoring and control methods and system, be electric desalting equipment closed pressure resistant desalination crouch that the more equation of equal altitude position thief hatch of tank draw it is multiple side by side, it is equipped with the manual sampling pipe of hand stop valve and manual sampling valve respectively, the DCS/PLC desalination control system of electric desalting equipment carries out corresponding desalination control according to oil-water interface position in the sleeping tank of the desalination measured in real time, it is characterized in that every manual sampling pipe draws the automatic sampling pipe for matching controlling of sampling valve by sampling threeway respectively between its hand stop valve and manual sampling valve, multiple sampling pipes automatic side by side prestore the closed pressure resistant buffer tank lower part of gas by summarizing sampling pipe connection again；Outside configuration is higher than the liquid level detecting sensor for summarizing sampling interface tube, top mating gaseous pressure sensor in the middle part of buffer tank.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.

Description

Electric desalting equipment oil-water interfaces on-line monitoring and control method and system
Technical field
The present invention relates to a kind of storage tanks to cut wetting system, more particularly to a kind of electric desalting equipment oil-water interfaces on-line monitoring and Control method and system.
Background technique
Tape splicing sampling hand is drawn respectively to the water level that may possibly be separated of multiple height differences of desalination storage tank in existing electric desalting apparatus The sampling pipe of dynamic valve, and the sampling hand-operated valve by manually successively opening multiple height difference sampling pipes, observe by the naked eye sampling pipe The medium character of outflow judges the water level in desalination storage tank, so that electric desalting apparatus be instructed to carry out draining desalination.It is this artificial Sampling survey water level method, not only water level detecting low efficiency, be not suitable for high-frequency water level detecting, and inevitably discharge oil Property medium, causes unnecessary environmental pollution.
Summary of the invention
Present invention aims to overcome that the drawbacks described above of the prior art, providing one kind can be carried out the efficient water level inspection of high-frequency It surveys, and is avoided that the electric desalting equipment oil-water interfaces on-line monitoring of discharge oil medium and control method, the object of the invention also exist In offer system for carrying out the process.
To achieve the above object, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method, set in electro-desalting The multiple of the more equation of equal altitude position thief hatch extractions of the sleeping tank of standby closed pressure resistant desalination are equipped with hand stop valve side by side, respectively and adopt manually The manual sampling pipe of sample valve, the DCS/PLC desalination control system of electric desalting equipment is according to grease in the sleeping tank of the desalination measured in real time Interface location carries out corresponding desalination control, and every manual sampling pipe passes through respectively between its hand stop valve and manual sampling valve It samples threeway and draws the automatic sampling pipe for matching controlling of sampling valve, multiple sampling pipes automatic side by side are pre- by summarizing sampling pipe connection again Deposit the closed pressure resistant buffer tank lower part of gas；Outside configuration is higher than the level sensing sensing for summarizing sampling interface tube in the middle part of buffer tank Gaseous pressure sensor is coupled in device, top；
Under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, utilizes automatic sampling pipe where the controlling of sampling valve Or summarize that sampling pipe matches after line grease detection sensor carries out delay detection to medium character in sampling pipe, close this and adopt Sample control valve；When pressure tank balance is crouched in gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination, using returning Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and return pipeline not countercurrently, until liquid level detecting sensor detects it Feed back pump is closed when locating buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: in all hand stop valve standard-sized sheets and all manual sampling valves and all controls Under the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, detects to gaseous pressure sensor slow Deposit gaseous pressure and desalination in tank crouch pressure tank balance when, using sampling pipe automatic where the controlling of sampling valve or summarize sampling Pipe match after line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；Using return Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and return pipeline not countercurrently, until liquid level detecting sensor detects it Feed back pump is closed when locating buffer tank inner height is gas phase stops feed back.It is connected up at the top of the buffer tank and is configured to adjust Buffer tank prestores the manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve.Desalination is crouched tank thief hatch liquid level The detection of medium character is under intelligent controller control: gas phase pressure difference makes desalination crouch in tank in crouched using desalination tank and buffer tank The sampled pipe of medium flows into buffer tank, using online grease detection sensor to flowing through or stream deposits its desalination with sampling pipe and crouches tank Interior medium character is detected, and sends DCS/PLC desalination to directly or according to needing will test result or detecting judging result Control system；Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, keeps gaseous pressure in buffer tank sleeping less than desalination Gaseous pressure in tank.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
As optimization, return pipeline countercurrently is not that lower part or end connection in buffer tank are led to from the top of buffer tank in end Buffer tank lower part feed back pipe configuration feed back pump and check (non-return) valve, feed back tube head end connect desalination crouch tank or connection highest thief hatch or Between the sampling threeway and controlling of sampling valve of the automatic sampling pipe that highest and lowest thief hatch is drawn.
As optimization, connect the sampling threeway of the automatic sampling pipe that highest thief hatch or highest and lowest thief hatch are drawn with The feed back control closed after feed back tube head section between controlling of sampling valve opens front opening configured with feed back pump, feed back pump is closed Valve；
When returning between the sampling threeway and controlling of sampling valve for connecting the automatic sampling pipe that highest and lowest thief hatch is drawn When the feed back control valve closed after expects pipe head section opens front opening configured with feed back pump, feed back pump is closed, from high-order thief hatch Medium be transmitted back to highest thief hatch extraction automatic sampling pipe sampling threeway and controlling of sampling valve between feed back pipe, come from The medium of low level thief hatch is transmitted back between the sampling threeway and controlling of sampling valve for the automatic sampling pipe that minimum thief hatch is drawn Feed back pipe.
As optimization, the automatic sampling pipe is big in controlling of sampling valve tract concatenation both ends band end plate or blue disk, diameter In the lateral detection pipe of sampling pipe diameter automatically, one end end plate of the online grease detection sensor configuration in lateral detection pipe Or Lan Panshang；
The sampling pipe concatenation both ends of summarizing are greater than the lateral detection for summarizing sampling pipe diameter with end plate or blue disk, diameter Pipe, one end end plate or Lan Panshang of the online grease detection sensor configuration in lateral detection pipe.
As optimization, it is described summarize sampling pipe its Connection Cache tank latter end by sample Zhi Santong connect tennis partner downwards The sampling branch pipe of dynamic sampling branch valve；It is connected up at the top of the buffer tank and is configured to adjust buffer tank and prestores the manual of gas flow The blow-down pipe of blow valve or automatic controller control blow valve.It is furnished with material storage container below the sampling branch pipe.The caching tank deck Portion, which connects up, is configured to adjust that buffer tank prestores the manual vent valve of gas flow or automatic controller control blow valve is put Blank pipe.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
System for realizing electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method is de- in electricity The closed pressure resistant desalination of salt equipment crouch that the more equation of equal altitude position thief hatch of tank draw it is multiple side by side, be equipped with hand stop valve and hand respectively The DCS/PLC desalination control system of the manual sampling pipe of dynamic sampling valve, electric desalting equipment crouches in tank according to the desalination measured in real time Oil-water interface position carries out corresponding desalination control, and every manual sampling pipe is distinguished between its hand stop valve and manual sampling valve The automatic sampling pipe for matching controlling of sampling valve is drawn by sampling threeway, multiple sampling pipes automatic side by side are again by summarizing sampling pipe connection The logical closed pressure resistant buffer tank lower part for prestoring gas；Outside configuration is higher than the level sensing for summarizing sampling interface tube in the middle part of buffer tank Gaseous pressure sensor is coupled in sensor, top；
Under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, utilizes automatic sampling pipe where the controlling of sampling valve Or summarize that sampling pipe matches after line grease detection sensor carries out delay detection to medium character in sampling pipe, close this and adopt Sample control valve；When pressure tank balance is crouched in gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination, using returning Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and return pipeline not countercurrently, until liquid level detecting sensor detects it Feed back pump is closed when locating buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: in all hand stop valve standard-sized sheets and all manual sampling valves and all controls Under the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, detects to gaseous pressure sensor slow Deposit gaseous pressure and desalination in tank crouch pressure tank balance when, using sampling pipe automatic where the controlling of sampling valve or summarize sampling Pipe match after line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；Using return Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and return pipeline not countercurrently, until liquid level detecting sensor detects it Feed back pump is closed when locating buffer tank inner height is gas phase stops feed back.It is connected up at the top of the buffer tank and is configured to adjust Buffer tank prestores the manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve.Desalination is crouched tank thief hatch liquid level The detection of medium character is under intelligent controller control: gas phase pressure difference makes desalination crouch in tank in crouched using desalination tank and buffer tank The sampled pipe of medium flows into buffer tank, using online grease detection sensor to flowing through or stream deposits its desalination with sampling pipe and crouches tank Interior medium character is detected, and sends DCS/PLC desalination to directly or according to needing will test result or detecting judging result Control system；Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, keeps gaseous pressure in buffer tank sleeping less than desalination Gaseous pressure in tank.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
As optimization, return pipeline countercurrently is not that lower part or end connection in buffer tank are led to from the top of buffer tank in end Buffer tank lower part feed back pipe configuration feed back pump and check (non-return) valve, feed back tube head end connect desalination crouch tank or connection highest thief hatch or Between the sampling threeway and controlling of sampling valve of the automatic sampling pipe that highest and lowest thief hatch is drawn.
As optimization, connect the sampling threeway of the automatic sampling pipe that highest thief hatch or highest and lowest thief hatch are drawn with The feed back control closed after feed back tube head section between controlling of sampling valve opens front opening configured with feed back pump, feed back pump is closed Valve；
When returning between the sampling threeway and controlling of sampling valve for connecting the automatic sampling pipe that highest and lowest thief hatch is drawn When the feed back control valve closed after expects pipe head section opens front opening configured with feed back pump, feed back pump is closed, from high-order thief hatch Medium be transmitted back to highest thief hatch extraction automatic sampling pipe sampling threeway and controlling of sampling valve between feed back pipe, come from The medium of low level thief hatch is transmitted back between the sampling threeway and controlling of sampling valve for the automatic sampling pipe that minimum thief hatch is drawn Feed back pipe.
As optimization, the automatic sampling pipe is big in controlling of sampling valve tract concatenation both ends band end plate or blue disk, diameter In the lateral detection pipe of sampling pipe diameter automatically, one end end plate of the online grease detection sensor configuration in lateral detection pipe Or Lan Panshang；
The sampling pipe concatenation both ends of summarizing are greater than the lateral detection for summarizing sampling pipe diameter with end plate or blue disk, diameter Pipe, one end end plate or Lan Panshang of the online grease detection sensor configuration in lateral detection pipe.
As optimization, it is described summarize sampling pipe its Connection Cache tank latter end by sample Zhi Santong connect tennis partner downwards The sampling branch pipe of dynamic sampling branch valve；It is connected up at the top of the buffer tank and is configured to adjust buffer tank and prestores the manual of gas flow The blow-down pipe of blow valve or automatic controller control blow valve.It is furnished with material storage container below the sampling branch pipe.The caching tank deck Portion, which connects up, is configured to adjust that buffer tank prestores the manual vent valve of gas flow or automatic controller control blow valve is put Blank pipe.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: gentle using the sleeping tank of desalination Depositing gas phase pressure difference in tank makes the desalination sampled pipe of medium in tank that crouches flow into buffer tank, using online grease detection sensor to flowing through Or stream is deposited its desalination with sampling pipe medium character in tank that crouches and is detected, and directly or according to needing will test result or detection Judging result sends DCS/PLC desalination control system to；Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay It deposits gaseous pressure in tank and is less than gaseous pressure in the sleeping tank of desalination.With can be carried out the efficient water level detecting of high-frequency, and the row of being avoided that Out the advantages of oil medium.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: in all manual shutoffs Under the premise of valve standard-sized sheet and all manual sampling valves and all control valves are fully closed, open the thief hatch and draw adopting for sampling pipe configuration Sample control valve makes medium sampled pipe in the case where pressure inside the tank is crouched in desalination in the sleeping tank of desalination flow into buffer tank to gaseous pressure sensor When detecting that gaseous pressure and the sleeping pressure inside the tank of desalination balance in surge tank, is detected and passed using the online grease of sampling pipe configuration Sensor is to flowing through or stream is deposited the medium character of the sampling pipe and detected, and directly or according to needing will test result or detection is sentenced Disconnected result sends DCS/PLC desalination control system to；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and take off Salt crouch pressure inside the tank balance when, close the controlling of sampling valve and open feed back control valve and feed back and pump and be situated between to desalination tank loopback of crouching Matter, until tank can't detect liquid medium, closing feed back pump and feed back control valve with liquid level detecting sensor.
After opening the thief hatch and drawing the controlling of sampling valve of sampling pipe configuration, the desalination medium in tank that crouches is made to crouch tank in desalination Sampled pipe flows into buffer tank to gaseous pressure sensor and detects that gaseous pressure and desalination are crouched in tank in surge tank under interior pressure When pressure balance, first detects to close the controlling of sampling valve in sampling pipe after medium or first close in line grease detection sensor and be somebody's turn to do Controlling of sampling valve detects medium in sampling pipe after line grease detection sensor, then opens feed back control valve and feed back is pumped to desalination Sleeping tank loopback medium, until tank can't detect liquid medium, closing feed back pump and feed back control valve with liquid level detecting sensor.
The detection of the sleeping tank oil-water interface of desalination is successively detected from high to low or from low to high under intelligent controller control The medium character of the sleeping each thief hatch liquid level of tank of desalination:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller Determine desalination and crouch tank oil-water interface at highest thief hatch, and is transmitted to DCS/PLC desalination control system；If detecting two height When the medium of low neighbouring sample oral fluid position is respectively oil and water, then determine that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmitted to DCS/PLC desalination control system；
When detecting from low to high, if detecting that the medium of lowest order thief hatch liquid level for oil, is sentenced by intelligent controller Determine desalination and crouches tank oil-water interface in minimum thief hatch hereinafter, and transmitting to DCS/PLC desalination control system；If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then determine that desalination crouches tank oil-water interface at this by intelligent controller At low thief hatch, and transmitted to DCS/PLC desalination control system.
The tank is configured with liquid level detecting sensor in the middle and lower part side of buffer tank, and the sampling interface tube that summarizes is lower than The tank of buffer tank matches liquid level detecting sensor.The distance for summarizing sampling interface tube to buffer tank bottom is that tank is passed with level sensing Sensor to buffer tank bottom distance 1/2 or so.
The feed back pump is packed in above buffer tank.The sleeping tank bottom face of the desalination, which is drawn, is connected to the dirt for leading to sewage-treatment plant Water delivery pipe and draw and be connected to medium input pipe, it is de- that the sewage efferent duct and medium input pipe are each configured with the DCS/PLC that is electrically connected The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch centers are in the same plane, and The plane and the sleeping tank axis oblique of desalination.
The desalination crouches pot bottom respectively by the feed pipe connection high position storage tank with inlet control valve and by with dirt The sewage pipe connection sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination control System processed.When detecting that oil-water interface is higher than a setting high position in the sleeping tank of desalination, DCS/PLC desalination control system turns on sewage Exhaust-control valve crouches sewage in tank to sewage-treatment plant discharge desalination, until oil-water interface reaches setting low level in tank is crouched in desalination When, DCS/PLC desalination control system is shut off sewage discharge control valve, stops sewerage；When needing to feed, DCS/PLC desalination Control system opens inlet control valve charging.
The method of the present invention and system are: intelligent controller can will be serially connected in the sleeping tank artificial detection pipe of desalination in the form of threeway Online grease detection sensor real-time Transmission on line returns the DCS/PLC desalination control system of control room, so that DCS/PLC desalination Control system carries out corresponding process flow according to this data.Intelligent controller real-time monitoring is mounted on the gas phase pressure on buffer tank Force snesor, when the pressure in buffer tank crouches pressure inside the tank close to desalination, intelligent controller will start feed back pump, by buffer tank In medium loopback back off salt crouch tank.Intelligent controller is made entirely by the controlling of sampling valve that control is mounted on automatic sampling pipe System can work in continuous sampling state.Intelligent controller can control the more online grease detection sensor institutes of set of monitoring simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control: all being adopted in all hand stop valve standard-sized sheets and manually Under the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium for first making desalination crouch in tank passes through sampling Pipe indentation prestores the buffer tank of gas to caching pressure tank and the sleeping pressure tank balance of desalination, then by concatenating with the controlling of sampling valve Online grease detection sensor detect controlling of sampling valve where medium character in sampling pipe, the medium character measured It is exactly that the sampling pipe draws medium character in the sleeping tank of desalination of the thief hatch position connect；It is when measuring highest order thief hatch medium When water or other height thief hatch media are water and when more high-order thief hatch is oil, and intelligent controller is just above-mentioned medium It is transmitted as real-time oil-water interfaces information to DCS/PLC desalination control system the thief hatch position of water.
The controlling of sampling valve on the sampling pipe of connection highest order thief hatch is opened, the medium for making desalination crouch in tank is adopted by this The sampling pipe indentation that sample control valve is matched prestores the buffer tank of gas, the online grease detection sensor pair which matches Medium character in the sampling pipe is detected, and the signal that the thief hatch high position is water is transferred to the DCS/PLC desalination Control system.
The online grease detection sensor that the controlling of sampling valve string is matched detects the medium character in the sampling pipe；And Testing result is transferred to the DCS/PLC desalination control system, and repeats aforementioned correlation step.
After adopting the above technical scheme, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system tool It can be carried out high-frequency water level detecting, and be avoided that discharge oiliness is situated between, the advantages of environment-friendly high-efficiency.
Detailed description of the invention
Fig. 1 is the signal of electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system embodiment one Figure；
Fig. 2 is the signal of electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system embodiment two Figure.
Specific embodiment
Embodiment one, as shown in Figure 1, electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method are de- in electricity The closed pressure resistant desalination of salt equipment crouch that the more equation of equal altitude position thief hatch of tank draw it is multiple side by side, be equipped with hand stop valve and hand respectively The DCS/PLC desalination control system of the manual sampling pipe of dynamic sampling valve, electric desalting equipment crouches in tank according to the desalination measured in real time Oil-water interface position carries out corresponding desalination control, and every manual sampling pipe is distinguished between its hand stop valve and manual sampling valve The automatic sampling pipe for matching controlling of sampling valve is drawn by sampling threeway, multiple sampling pipes automatic side by side are again by summarizing sampling pipe connection The logical closed pressure resistant buffer tank lower part for prestoring gas；Outside configuration is higher than the level sensing for summarizing sampling interface tube in the middle part of buffer tank Gaseous pressure sensor is coupled in sensor, top；
Under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, utilizes automatic sampling pipe where the controlling of sampling valve (or summarizing sampling pipe) match after line grease detection sensor carries out delay detection to medium character in sampling pipe, close should Controlling of sampling valve；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination crouch pressure tank balance, utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and return pipeline not countercurrently, until liquid level detecting sensor detects Feed back pump is closed when its locating buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: in all hand stop valve standard-sized sheets and all manual sampling valves and all controls Under the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, detects to gaseous pressure sensor slow Deposit gaseous pressure and desalination in tank crouch pressure tank balance when, (or summarize and adopt using sampling pipe automatic where the controlling of sampling valve Sample pipe) match after line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；It utilizes Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and return pipeline not countercurrently, until liquid level detecting sensor detects Feed back pump is closed when its locating buffer tank inner height is gas phase stops feed back.It is connected up at the top of the buffer tank and is configured to adjust Section buffer tank prestores the manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve.
Specifically: that be end do not lead to lower part or end connection in buffer tank from the top of buffer tank to return pipeline countercurrently is slow Deposit tank lower part feed back pipe configuration feed back pump and check (non-return) valve, feed back tube head end connect desalination crouch tank or connection highest thief hatch (or Highest and lowest thief hatch) it draws between the sampling threeway and controlling of sampling valve of automatic sampling pipe.
More specifically: the sampling threeway for the automatic sampling pipe that connection highest thief hatch (or highest and lowest thief hatch) is drawn The feed back control closed after feed back tube head section between controlling of sampling valve opens front opening configured with feed back pump, feed back pump is closed Valve；
Specifically: the automatic sampling pipe is greater than in controlling of sampling valve tract concatenation both ends band end plate or blue disk, diameter The lateral detection pipe of automatic sampling pipe diameter, the online grease detection sensor configuration lateral detection pipe one end end plate or On blue disk.
Specifically: the sampling pipe that summarizes is connected downwards by sampling Zhi Santong with manual in the latter end of its Connection Cache tank Sample the sampling branch pipe of branch valve；It is connected up at the top of the buffer tank and is configured to adjust buffer tank and prestores putting manually for gas flow The blow-down pipe of empty valve or automatic controller control blow valve.It is furnished with material storage container below the sampling branch pipe.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: gentle using the sleeping tank of desalination Depositing gas phase pressure difference in tank makes the desalination sampled pipe of medium in tank that crouches flow into buffer tank, using online grease detection sensor to flowing through Or stream is deposited its desalination with sampling pipe medium character in tank that crouches and is detected, and directly or according to needing will test result or detection Judging result sends DCS/PLC desalination control system to；Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay It deposits gaseous pressure in tank and is less than gaseous pressure in the sleeping tank of desalination.With can be carried out the efficient water level detecting of high-frequency, and the row of being avoided that Out the advantages of oil medium.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: in all manual shutoffs Under the premise of valve standard-sized sheet and all manual sampling valves and all control valves are fully closed, open the thief hatch and draw adopting for sampling pipe configuration Sample control valve makes medium sampled pipe in the case where pressure inside the tank is crouched in desalination in the sleeping tank of desalination flow into buffer tank to gaseous pressure sensor When detecting that gaseous pressure and the sleeping pressure inside the tank of desalination balance in surge tank, is detected and passed using the online grease of sampling pipe configuration Sensor is to flowing through or stream is deposited the medium character of the sampling pipe and detected, and directly or according to needing will test result or detection is sentenced Disconnected result sends DCS/PLC desalination control system to；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and take off Salt crouch pressure inside the tank balance when, close the controlling of sampling valve and open feed back control valve and feed back and pump and be situated between to desalination tank loopback of crouching Matter, until tank can't detect liquid medium, closing feed back pump and feed back control valve with liquid level detecting sensor.
After opening the thief hatch and drawing the controlling of sampling valve of sampling pipe configuration, the desalination medium in tank that crouches is made to crouch tank in desalination Sampled pipe flows into buffer tank to gaseous pressure sensor and detects that gaseous pressure and desalination are crouched in tank in surge tank under interior pressure When pressure balance, first detects to close the controlling of sampling valve in sampling pipe after medium or first close in line grease detection sensor and be somebody's turn to do Controlling of sampling valve detects medium in sampling pipe after line grease detection sensor, then opens feed back control valve and feed back is pumped to desalination Sleeping tank loopback medium, until tank can't detect liquid medium, closing feed back pump and feed back control valve with liquid level detecting sensor.
The detection of the sleeping tank oil-water interface of desalination is successively detected from high to low or from low to high under intelligent controller control The medium character of the sleeping each thief hatch liquid level of tank of desalination:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller Determine desalination and crouch tank oil-water interface at highest thief hatch, and is transmitted to DCS/PLC desalination control system；If detecting two height When the medium of low neighbouring sample oral fluid position is respectively oil and water, then determine that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmitted to DCS/PLC desalination control system；
When detecting from low to high, if detecting that the medium of lowest order thief hatch liquid level for oil, is sentenced by intelligent controller Determine desalination and crouches tank oil-water interface in minimum thief hatch hereinafter, and transmitting to DCS/PLC desalination control system；If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then determine that desalination crouches tank oil-water interface at this by intelligent controller At low thief hatch, and transmitted to DCS/PLC desalination control system.
The tank is configured with liquid level detecting sensor in the middle and lower part side of buffer tank, and the sampling interface tube that summarizes is lower than The tank of buffer tank matches liquid level detecting sensor.The distance for summarizing sampling interface tube to buffer tank bottom is that tank is passed with level sensing Sensor to buffer tank bottom distance 1/2 or so.
The feed back pump is packed in above buffer tank.The sleeping tank bottom face of the desalination, which is drawn, is connected to the dirt for leading to sewage-treatment plant Water delivery pipe and draw and be connected to medium input pipe, it is de- that the sewage efferent duct and medium input pipe are each configured with the DCS/PLC that is electrically connected The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch centers are in the same plane, and The plane and the sleeping tank axis oblique of desalination.
The desalination crouches pot bottom respectively by the feed pipe connection high position storage tank with inlet control valve and by with dirt The sewage pipe connection sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination control System processed.When detecting that oil-water interface is higher than a setting high position in the sleeping tank of desalination, DCS/PLC desalination control system turns on sewage Exhaust-control valve crouches sewage in tank to sewage-treatment plant discharge desalination, until oil-water interface reaches setting low level in tank is crouched in desalination When, DCS/PLC desalination control system is shut off sewage discharge control valve, stops sewerage；When needing to feed, DCS/PLC desalination Control system opens inlet control valve charging.
The method of the present invention is: intelligent controller can will be serially connected in desalination in the form of threeway and be crouched on tank artificial detection pipeline Online grease detection sensor real-time Transmission returns the DCS/PLC desalination control system of control room, so that DCS/PLC desalination control system System carries out corresponding process flow according to this data.Intelligent controller real-time monitoring is mounted on the sensing of the gaseous pressure on buffer tank Device, when the pressure in buffer tank crouches pressure inside the tank close to desalination, intelligent controller will start feed back pump, by Jie in buffer tank Matter loopback back off salt crouch tank.Intelligent controller makes whole system can by the controlling of sampling valve that control is mounted on automatic sampling pipe To work in continuous sampling state.Intelligent controller can control adopting where monitoring more online grease detection sensors of set simultaneously Sample detection line.
Oil-water interface detection method is under intelligent controller control: all being adopted in all hand stop valve standard-sized sheets and manually Under the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium for first making desalination crouch in tank passes through sampling Pipe indentation prestores the buffer tank of gas to caching pressure tank and the sleeping pressure tank balance of desalination, then by concatenating with the controlling of sampling valve Online grease detection sensor detect controlling of sampling valve where medium character in sampling pipe, the medium character measured It is exactly that the sampling pipe draws medium character in the sleeping tank of desalination of the thief hatch position connect；It is when measuring highest order thief hatch medium When water or other height thief hatch media are water and when more high-order thief hatch is oil, and intelligent controller is just above-mentioned medium It is transmitted as real-time oil-water interfaces information to DCS/PLC desalination control system the thief hatch position of water.
The controlling of sampling valve on the sampling pipe of connection highest order thief hatch is opened, the medium for making desalination crouch in tank is adopted by this The sampling pipe indentation that sample control valve is matched prestores the buffer tank of gas, the online grease detection sensor pair which matches Medium character in the sampling pipe is detected, and the signal that the thief hatch high position is water is transferred to the DCS/PLC desalination Control system.
The online grease detection sensor that the controlling of sampling valve string is matched detects the medium character in the sampling pipe；And Testing result is transferred to the DCS/PLC desalination control system, and repeats aforementioned correlation step.
After adopting the above technical scheme, have can be into for electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method Row high-frequency water level detecting, and it is avoided that discharge oiliness is situated between, the advantages of environment-friendly high-efficiency.
System for realizing electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method is de- in electricity The closed pressure resistant desalination of salt equipment crouch that more than the 1 equation of equal altitude position thief hatch of tank draws it is multiple side by side, be equipped with hand stop valve Vh1 respectively It is taken off with the DCS/PLC desalination control system of the manual sampling pipe 21 of manual sampling valve Vh2, electric desalting equipment according to what is measured in real time Oil-water interface position carries out corresponding desalination control in the sleeping tank 1 of salt, and every manual sampling pipe 21 is in its hand stop valve Vh1 and manually Draw the automatic sampling pipe 22 for matching controlling of sampling valve V1 between sampling valve Vh2 by sampling threeway 31 respectively, it is multiple automatic side by side Sampling pipe 22 prestores 6 lower part of closed pressure resistant buffer tank of gas by summarizing 23 connection of sampling pipe again；Match in 6 middle part outside of buffer tank It sets and is higher than the liquid level detecting sensor T2 for summarizing 23 interface of sampling pipe, top mating gaseous pressure sensor P；
Under the control of automatic controller 7: in all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and owning Under the premise of control valve is fully closed, opening a controlling of sampling valve V1 makes medium flow to buffer tank 6, utilizes controlling of sampling valve V1 institute Medium character in sampling pipe is carried out in the online grease detection sensor T1 that automatic sampling pipe 22 (or summarizing sampling pipe) is matched After delay detection, controlling of sampling valve V1 is closed；Gaseous pressure and de- in the buffer tank 6 detected to gaseous pressure sensor P Salt crouch 1 pressure balance of tank when, medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump PU and not return pipeline countercurrently 1, feed back is closed when liquid level detecting sensor T2 detects that 6 inner height of buffer tank locating for it is gas phase to pump PU stop feed back；
Or under the control of automatic controller 7: in all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and Under the premise of all control valves are fully closed, opening a controlling of sampling valve V1 makes medium flow into buffer tank 6, to gaseous pressure sensor In the buffer tank 6 that device P is detected gaseous pressure and desalination crouch 1 pressure balance of tank when, using automatic where controlling of sampling valve V1 Sampling pipe 22 (or summarizing sampling pipe) match after line grease detection sensor T1 detects medium character in sampling pipe, Close controlling of sampling valve V1；Medium in buffer tank 6 desalination is transmitted back to using feed back pump PU and not return pipeline countercurrently to crouch Tank 1, feed back is closed when liquid level detecting sensor T2 detects that 6 inner height of buffer tank locating for it is gas phase pumps PU and stop back Material.Connected up at the top of the buffer tank 6 be configured to adjust buffer tank 6 prestore gas flow manual vent valve V8 it is (or automatic Controller control blow valve) blow-down pipe 28.
Specifically: not return pipeline countercurrently be end led to from the top of buffer tank 6 lower part in buffer tank 6 (or end connection Logical buffer tank lower part) feed back pipe 24 configure feed back and pump PU and check (non-return) valve CV, 24 head end of feed back pipe connects highest thief hatch (or most High and minimum thief hatch) draw between the sampling threeway 31 and controlling of sampling valve V1 of automatic sampling pipe 22 (or connection desalination is sleeping Tank).
More specifically: the sampling threeway 31 of automatic sampling pipe is drawn in connection highest thief hatch (or highest and lowest thief hatch) It is closed after 24 head section of feed back pipe between controlling of sampling valve V1 opens front opening configured with feed back pump PU, feed back pump PU is closed Feed back control valve V2.
Specifically: the automatic sampling pipe 22 is in controlling of sampling valve V1 tract concatenation both ends band end plate or blue disk, diameter Greater than the lateral detection pipe 40 of automatic sampling pipe diameter, the online grease detection sensor T1 configuration is in lateral detection pipe 40 One end end plate or Lan Panshang.
Specifically: the sampling pipe 23 that summarizes is matched in the latter end of its Connection Cache tank 6 by sampling Zhi Santong and connecting downwards The sampling branch pipe 25 of sampling branch valve Vh3 manually；Connected up at the top of the buffer tank 6 be configured to adjust buffer tank 6 prestore gas The blow-down pipe 28 of the manual vent valve V8 (or automatic controller control blow valve) of the scale of construction.Equipped with storage below the sampling branch pipe 25 Material pond 8.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
The detection of the sleeping 1 thief hatch liquid level medium character of tank of desalination is under the control of intelligent controller 7: utilizing the sleeping tank 1 of desalination So that the sampled pipe of medium in the sleeping tank 1 of desalination is flowed into buffer tank 6 with gas phase pressure difference in buffer tank 6, utilizes online grease to detect and sense Device T1 to flow through or stream deposit its with sampling pipe desalination crouch tank 1 in medium character detect, and directly or according to need will inspection It surveys result or detection judging result sends DCS/PLC desalination control system to；Medium in buffer tank 6 is conveyed using feed back pump PU The sleeping tank 1 of salt back off makes gaseous pressure in buffer tank 6 be less than gaseous pressure in the sleeping tank 1 of desalination.With can be carried out high-frequency High-efficient Water Position detection, and it is avoided that the advantages of oil medium is discharged.
The detection of sleeping certain the thief hatch liquid level medium character of tank 1 of desalination is under the control of intelligent controller 7: being cut manually all Under the premise of only valve Vh1 standard-sized sheet and all manual sampling valve Vh2 and all control valves are fully closed, open the thief hatch and draw sampling pipe The controlling of sampling valve V1 of configuration, make desalination crouch in tank 1 medium desalination crouch in tank 1 sampled pipe under pressure flow into buffer tank 6 to When gaseous pressure sensor detects pressure balance in the sleeping tank 1 of gaseous pressure and desalination in P to surge tank 6, matched using the sampling pipe The online grease detection sensor T1 set is to flowing through or stream is deposited the medium character of the sampling pipe and detected, and directly or according to needing It will test result or detection judging result send DCS/PLC desalination control system to；It is detected as gaseous pressure sensor P When gaseous pressure and the sleeping pressure inside the tank of desalination balance in buffer tank 6, closes the controlling of sampling valve V1 and open feed back control valve V2 PU is pumped with feed back to crouch 1 loopback medium of tank to desalination, until liquid level detecting sensor T2 can't detect liquid medium, closes feed back pump PU and feed back control valve V2.
When open the thief hatch draw sampling pipe configuration controlling of sampling valve V1 after, make desalination crouch tank 1 in medium in desalination Sampled pipe inflow buffer tank 6 detects gaseous pressure in surge tank 1 to gaseous pressure sensor P and takes off under pressure in sleeping tank 1 In the sleeping tank 1 of salt when pressure balance, is first detected in line grease detection sensor T1 and close the controlling of sampling valve in sampling pipe after medium V1 first closes the controlling of sampling valve V1 and detects medium in sampling pipe after line grease detection sensor T1, then opens feed back control Valve V2 and feed back processed pump PU and crouch 1 loopback medium of tank to desalination, until liquid level detecting sensor T2 can't detect liquid medium, close Feed back pumps PU and feed back control valve V2.
The detection of sleeping 1 oil-water interface of tank of desalination is successively examined from high to low or from low to high under the control of intelligent controller 7 Survey the medium character of the sleeping each thief hatch liquid level of tank 1 of desalination:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller 7 Determine desalination and crouch 1 oil-water interface of tank at highest thief hatch, and is transmitted to DCS/PLC desalination control system；If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then determine that sleeping 1 oil-water interface of tank of desalination exists by intelligent controller 7 At the low thief hatch, and transmitted to DCS/PLC desalination control system；
When detecting from low to high, if detecting that the medium of lowest order thief hatch liquid level for oil, is sentenced by intelligent controller 7 Determine desalination and crouches 1 oil-water interface of tank in minimum thief hatch hereinafter, and transmitting to DCS/PLC desalination control system；If detecting two When the medium of a height neighbouring sample oral fluid position is respectively oil and water, then sleeping 1 oil-water interface of tank of desalination is determined by intelligent controller 7 It is transmitted at the low thief hatch, and to DCS/PLC desalination control system.
Liquid level detecting sensor T2 configuration is in the middle and lower part side of buffer tank 6, and described to summarize 23 interface of sampling pipe low In the liquid level detecting sensor T2 of buffer tank 6.The distance for summarizing 23 interface of sampling pipe to 6 bottom of buffer tank is level sensing biography Sensor T2 to 6 bottom distance of buffer tank 1/2 or so.
The feed back pump PU is packed in above buffer tank 6.Sleeping 1 bottom surface of tank of the desalination, which draws to be connected to, leads to sewage-treatment plant Sewage efferent duct 26 and draw and be connected to medium input pipe 27, the sewage efferent duct 26 and medium input pipe 27 are each configured with electricity The even sewage output control valve V3 and medium input control valve V4 of DCS/PLC desalination control system.Multiple thief hatch centers are located at In same plane, and the plane and the sleeping 1 axis oblique of tank of desalination.
The desalination crouches pot bottom respectively by the feed pipe connection high position storage tank with inlet control valve and by with dirt The sewage pipe connection sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination control System processed.When detecting that oil-water interface is higher than a setting high position in the sleeping tank of desalination, DCS/PLC desalination control system turns on sewage Exhaust-control valve crouches sewage in tank to sewage-treatment plant discharge desalination, until oil-water interface reaches setting low level in tank is crouched in desalination When, DCS/PLC desalination control system is shut off sewage discharge control valve, stops sewerage；When needing to feed, DCS/PLC desalination Control system opens inlet control valve charging.
The method of the present invention and system are: intelligent controller can will be serially connected in the sleeping tank artificial detection pipe of desalination in the form of threeway Online grease detection sensor real-time Transmission on line returns the DCS/PLC desalination control system of control room, so that DCS/PLC desalination Control system carries out corresponding process flow according to this data.Intelligent controller real-time monitoring is mounted on the gas phase pressure on buffer tank Force snesor, when the pressure in buffer tank crouches pressure inside the tank close to desalination, intelligent controller will start feed back pump, by buffer tank In medium loopback back off salt crouch tank.Intelligent controller is made entirely by the controlling of sampling valve that control is mounted on automatic sampling pipe System can work in continuous sampling state.Intelligent controller can control the more online grease detection sensor institutes of set of monitoring simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control: all being adopted in all hand stop valve standard-sized sheets and manually Under the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium for first making desalination crouch in tank passes through sampling Pipe indentation prestores the buffer tank of gas to caching pressure tank and the sleeping pressure tank balance of desalination, then by concatenating with the controlling of sampling valve Online grease detection sensor detect controlling of sampling valve where medium character in sampling pipe, the medium character measured It is exactly that the sampling pipe draws medium character in the sleeping tank of desalination of the thief hatch position connect；It is when measuring highest order thief hatch medium When water or other height thief hatch media are water and when more high-order thief hatch is oil, and intelligent controller is just above-mentioned medium It is transmitted as real-time oil-water interfaces information to DCS/PLC desalination control system the thief hatch position of water.
The controlling of sampling valve on the sampling pipe of connection highest order thief hatch is opened, the medium for making desalination crouch in tank is adopted by this The sampling pipe indentation that sample control valve is matched prestores the buffer tank of gas, the online grease detection sensor pair which matches Medium character in the sampling pipe is detected, and the signal that the thief hatch high position is water is transferred to the DCS/PLC desalination Control system.
The online grease detection sensor that the controlling of sampling valve string is matched detects the medium character in the sampling pipe；And Testing result is transferred to the DCS/PLC desalination control system, and repeats aforementioned correlation step.
Embodiment two, as shown in Fig. 2, electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method and system with The difference of embodiment one is:
Electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method:
Under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, summarizes sampling pipe using where the controlling of sampling valve Pipe (or automatic sampling) match after line grease detection sensor carries out delay detection to medium character in sampling pipe, closing should Controlling of sampling valve；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination crouch pressure tank balance, utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and return pipeline not countercurrently, until liquid level detecting sensor detects Feed back pump is closed when its locating buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: in all hand stop valve standard-sized sheets and all manual sampling valves and all controls Under the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, detects to gaseous pressure sensor slow Deposit gaseous pressure and desalination in tank crouch pressure tank balance when, (or adopted automatically using sampling pipe is summarized where the controlling of sampling valve Sample pipe) match after line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；It utilizes Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and return pipeline not countercurrently, until liquid level detecting sensor detects Feed back pump is closed when its locating buffer tank inner height is gas phase stops feed back.It is connected up at the top of the buffer tank and is configured to adjust Section buffer tank prestores the manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve.
Specifically: that be end do not lead to lower part or end connection in buffer tank from the top of buffer tank to return pipeline countercurrently is slow The feed back pipe configuration feed back for depositing tank lower part pumps and check (non-return) valve, the highest and lowest thief hatch of feed back tube head end connection (or highest sampling Mouthful) (or the sleeping tank of connection desalination) is drawn between the sampling threeway and controlling of sampling valve of automatic sampling pipe.
More specifically: connecting the sampling threeway of the automatic sampling pipe of highest and lowest thief hatch (or highest thief hatch) extraction The feed back control closed after feed back tube head section between controlling of sampling valve opens front opening configured with feed back pump, feed back pump is closed Valve；
Medium from high-order thief hatch is transmitted back to the sampling threeway and sampling of the automatic sampling pipe of highest thief hatch extraction Feed back pipe between control valve, the medium from low level thief hatch are transmitted back to the sampling for the automatic sampling pipe that minimum thief hatch is drawn Feed back pipe between threeway and controlling of sampling valve.
Specifically: the sampling pipe concatenation both ends of summarizing are greater than the cross for summarizing sampling pipe diameter with end plate or blue disk, diameter To detection pipe, one end end plate or Lan Panshang of the online grease detection sensor configuration in lateral detection pipe.
Specifically: being connected up at the top of the buffer tank and be configured to adjust the manual vent valve that buffer tank prestores gas flow Or the blow-down pipe of automatic controller control blow valve；It is described summarize sampling pipe its Connection Cache tank latter end by sampling branch three Lead to sampling branch pipe of the lower connection with sampling branch valve manually.It is furnished with material storage container below the sampling branch pipe.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: gentle using the sleeping tank of desalination Depositing gas phase pressure difference in tank makes the desalination sampled pipe of medium in tank that crouches flow into buffer tank, using online grease detection sensor to flowing through Or stream is deposited its desalination with sampling pipe medium character in tank that crouches and is detected, and directly or according to needing will test result or detection Judging result sends DCS/PLC desalination control system to；Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay It deposits gaseous pressure in tank and is less than gaseous pressure in the sleeping tank of desalination.With can be carried out the efficient water level detecting of high-frequency, and the row of being avoided that Out the advantages of oil medium.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control: in all manual shutoffs Under the premise of valve standard-sized sheet and all manual sampling valves and all control valves are fully closed, open the thief hatch and draw adopting for sampling pipe configuration Sample control valve makes medium sampled pipe in the case where pressure inside the tank is crouched in desalination in the sleeping tank of desalination flow into buffer tank to gaseous pressure sensor When detecting that gaseous pressure and the sleeping pressure inside the tank of desalination balance in surge tank, is detected and passed using the online grease of sampling pipe configuration Sensor is to flowing through or stream is deposited the medium character of the sampling pipe and detected, and directly or according to needing will test result or detection is sentenced Disconnected result sends DCS/PLC desalination control system to；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and take off Salt crouch pressure inside the tank balance when, close the controlling of sampling valve and open feed back control valve and feed back and pump and be situated between to desalination tank loopback of crouching Matter, until liquid level detecting sensor can't detect liquid medium, closing feed back pump and feed back control valve.
After opening the thief hatch and drawing the controlling of sampling valve of sampling pipe configuration, the desalination medium in tank that crouches is made to crouch tank in desalination Sampled pipe flows into buffer tank to gaseous pressure sensor and detects that gaseous pressure and desalination are crouched in tank in surge tank under interior pressure When pressure balance, first detects to close the controlling of sampling valve in sampling pipe after medium or first close in line grease detection sensor and be somebody's turn to do Controlling of sampling valve detects medium in sampling pipe after line grease detection sensor, then opens feed back control valve and feed back is pumped to desalination Sleeping tank loopback medium, until liquid level detecting sensor can't detect liquid medium, closing feed back pump and feed back control valve.
The detection of the sleeping tank oil-water interface of desalination is successively detected from high to low or from low to high under intelligent controller control The medium character of the sleeping each thief hatch liquid level of tank of desalination:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller Determine desalination and crouch tank oil-water interface at highest thief hatch, and is transmitted to DCS/PLC desalination control system；If detecting two height When the medium of low neighbouring sample oral fluid position is respectively oil and water, then determine that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmitted to DCS/PLC desalination control system；
When detecting from low to high, if detecting that the medium of lowest order thief hatch liquid level for oil, is sentenced by intelligent controller Determine desalination and crouches tank oil-water interface in minimum thief hatch hereinafter, and transmitting to DCS/PLC desalination control system；If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then determine that desalination crouches tank oil-water interface at this by intelligent controller At low thief hatch, and transmitted to DCS/PLC desalination control system.
The liquid level detecting sensor configuration is in the middle and lower part side of buffer tank, and the sampling interface tube that summarizes is lower than caching The liquid level detecting sensor of tank.The distance for summarizing sampling interface tube to buffer tank bottom is liquid level detecting sensor to buffer tank 1/2 or so of bottom distance.
The feed back pump is packed in above buffer tank.The sleeping tank bottom face of the desalination, which is drawn, is connected to the dirt for leading to sewage-treatment plant Water delivery pipe and draw and be connected to medium input pipe, it is de- that the sewage efferent duct and medium input pipe are each configured with the DCS/PLC that is electrically connected The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch centers are in the same plane, and The plane and the sleeping tank axis oblique of desalination.
The desalination crouches pot bottom respectively by the feed pipe connection high position storage tank with inlet control valve and by with dirt The sewage pipe connection sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination control System processed.When detecting that oil-water interface is higher than a setting high position in the sleeping tank of desalination, DCS/PLC desalination control system turns on sewage Exhaust-control valve crouches sewage in tank to sewage-treatment plant discharge desalination, until oil-water interface reaches setting low level in tank is crouched in desalination When, DCS/PLC desalination control system is shut off sewage discharge control valve, stops sewerage；When needing to feed, DCS/PLC desalination Control system opens inlet control valve charging.
The method of the present invention is: intelligent controller can will be serially connected in desalination in the form of threeway and be crouched on tank artificial detection pipeline Online grease detection sensor real-time Transmission returns the DCS/PLC desalination control system of control room, so that DCS/PLC desalination control system System carries out corresponding process flow according to this data.Intelligent controller real-time monitoring is mounted on the sensing of the gaseous pressure on buffer tank Device, when the pressure in buffer tank crouches pressure inside the tank close to desalination, intelligent controller will start feed back pump, by Jie in buffer tank Matter loopback back off salt crouch tank.Intelligent controller makes whole system can by the controlling of sampling valve that control is mounted on automatic sampling pipe To work in continuous sampling state.Intelligent controller can control adopting where monitoring more online grease detection sensors of set simultaneously Sample detection line.
Oil-water interface detection method is under intelligent controller control: all being adopted in all hand stop valve standard-sized sheets and manually Under the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium for first making desalination crouch in tank passes through sampling Pipe indentation prestores the buffer tank of gas to caching pressure tank and the sleeping pressure tank balance of desalination, then by concatenating with the controlling of sampling valve Online grease detection sensor detect controlling of sampling valve where medium character in sampling pipe, the medium character measured It is exactly that the sampling pipe draws medium character in the sleeping tank of desalination of the thief hatch position connect；It is when measuring highest order thief hatch medium When water or other height thief hatch media are water and when more high-order thief hatch is oil, and intelligent controller is just above-mentioned medium It is transmitted as real-time oil-water interfaces information to DCS/PLC desalination control system the thief hatch position of water.
The controlling of sampling valve on the sampling pipe of connection highest order thief hatch is opened, the medium for making desalination crouch in tank is adopted by this The sampling pipe indentation that sample control valve is matched prestores the buffer tank of gas, the online grease detection sensor pair which matches Medium character in the sampling pipe is detected, and the signal that the thief hatch high position is water is transferred to the DCS/PLC desalination Control system.
The online grease detection sensor that the controlling of sampling valve string is matched detects the medium character in the sampling pipe；And Testing result is transferred to the DCS/PLC desalination control system, and repeats aforementioned correlation step.
After adopting the above technical scheme, have can be into for electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method Row high-frequency water level detecting, and it is avoided that discharge oiliness is situated between, the advantages of environment-friendly high-efficiency.
System for realizing electric desalting equipment oil-water interfaces of the present invention on-line monitoring and control method is de- in electricity The closed pressure resistant desalination of salt equipment crouch that more than the 1 equation of equal altitude position thief hatch of tank draws it is multiple side by side, be equipped with hand stop valve Vh1 respectively It is taken off with the DCS/PLC desalination control system of the manual sampling pipe 21 of manual sampling valve Vh2, electric desalting equipment according to what is measured in real time Oil-water interface position carries out corresponding desalination control in the sleeping tank 1 of salt, and every manual sampling pipe 21 is in its hand stop valve Vh1 and manually Draw the automatic sampling pipe 22 for matching controlling of sampling valve V1 between sampling valve Vh2 by sampling threeway 31 respectively, it is multiple automatic side by side Sampling pipe 22 prestores 6 lower part of closed pressure resistant buffer tank of gas by summarizing 23 connection of sampling pipe again；Match in 6 middle part outside of buffer tank It sets and is higher than the liquid level detecting sensor T2 for summarizing 23 interface of sampling pipe, top mating gaseous pressure sensor P；
Under the control of automatic controller 7: in all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and owning Under the premise of control valve is fully closed, opening a controlling of sampling valve V1 makes medium flow to buffer tank 6, using summarize sampling pipe 23 (or Automatic sampling pipe where person's controlling of sampling valve) the online grease detection sensor T1 that matches prolongs medium character in sampling pipe When detection after, close controlling of sampling valve V1；Gaseous pressure and desalination in the buffer tank 6 detected to gaseous pressure sensor P When sleeping 1 pressure balance of tank, medium in buffer tank is transmitted back to the sleeping tank 1 of desalination using feed back pump PU and not return pipeline countercurrently, Feed back is closed when liquid level detecting sensor T2 detects that 6 inner height of buffer tank locating for it is gas phase pump PU stop feed back；
Or under the control of automatic controller 7: in all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and Under the premise of all control valves are fully closed, opening a controlling of sampling valve V1 makes medium flow into buffer tank 6, to gaseous pressure sensor In the buffer tank 6 that device P is detected gaseous pressure and desalination crouch 1 pressure balance of tank when, using summarizing (or the sampling of sampling pipe 23 Automatic sampling pipe where control valve) match after line grease detection sensor T1 detects medium character in sampling pipe, close Close controlling of sampling valve V1；Medium in buffer tank 6 is transmitted back to the sleeping tank of desalination using feed back pump PU and not return pipeline countercurrently 1, feed back is closed when liquid level detecting sensor T2 detects that 6 inner height of buffer tank locating for it is gas phase to pump PU stop feed back. Connected up at the top of the buffer tank 6 be configured to adjust buffer tank 6 prestore gas flow manual vent valve V8 (or automatically control Device control blow valve) blow-down pipe 28.
Specifically: not return pipeline countercurrently be end led to from the top of buffer tank 6 lower part in buffer tank 6 (or end connection Logical buffer tank lower part) feed back pipe 24 configure feed back and pump PU and check (non-return) valve CV, 24 head end of feed back pipe connects highest and lowest sampling Between the sampling threeway 31 and controlling of sampling valve V1 of the automatic sampling pipe 22 of mouth (or highest thief hatch) extraction (or connection desalination is sleeping Tank).
More specifically: connecting the sampling threeway 31 that highest and lowest thief hatch (or highest thief hatch) draws automatic sampling pipe It is closed after 24 head section of feed back pipe between controlling of sampling valve V1 opens front opening configured with feed back pump PU, feed back pump PU is closed Feed back control valve V2.
Medium from high-order thief hatch is transmitted back to highest thief hatch and draws the sampling threeway 31 of automatic sampling pipe 22 and adopt Feed back pipe 24 between sample control valve V1, the medium from low level thief hatch are transmitted back to minimum thief hatch and draw automatic sampling pipe 22 Sampling threeway 31 and controlling of sampling valve V1 between feed back pipe 24.
Specifically: it is described summarize sampling pipe 23 and concatenate both ends and be greater than with end plate or blue disk, diameter summarize sampling pipe diameter Lateral detection pipe 40, one end end plate or Lan Panshang of the online grease detection sensor T1 configuration in lateral detection pipe 40.
Specifically: being connected up at the top of the buffer tank 6 and be configured to adjust the manual emptying that buffer tank 6 prestores gas flow The blow-down pipe 28 of valve V8 (or automatic controller control blow valve)；The sampling pipe 23 that summarizes is in the latter end of its Connection Cache tank 6 The sampling branch pipe 25 with sampling branch valve Vh3 manually is connected downwards by sampling Zhi Santong.Equipped with storage below the sampling branch pipe 25 Material pond 8.The advantages of with can be carried out the efficient water level detecting of high-frequency, and be avoided that discharge oil medium.
The detection of the sleeping 1 thief hatch liquid level medium character of tank of desalination is under the control of intelligent controller 7: utilizing the sleeping tank 1 of desalination So that the sampled pipe of medium in the sleeping tank 1 of desalination is flowed into buffer tank 6 with gas phase pressure difference in buffer tank 6, utilizes online grease to detect and sense Device T1 to flow through or stream deposit its with sampling pipe desalination crouch tank 1 in medium character detect, and directly or according to need will inspection It surveys result or detection judging result sends DCS/PLC desalination control system to；Medium in buffer tank 6 is conveyed using feed back pump PU The sleeping tank 1 of salt back off makes gaseous pressure in buffer tank 6 be less than gaseous pressure in the sleeping tank 1 of desalination.With can be carried out high-frequency High-efficient Water Position detection, and it is avoided that the advantages of oil medium is discharged.
The detection of sleeping certain the thief hatch liquid level medium character of tank 1 of desalination is under the control of intelligent controller 7: being cut manually all Under the premise of only valve Vh1 standard-sized sheet and all manual sampling valve Vh2 and all control valves are fully closed, open the thief hatch and draw sampling pipe The controlling of sampling valve V1 of configuration, make desalination crouch in tank 1 medium desalination crouch in tank 1 sampled pipe under pressure flow into buffer tank 6 to When gaseous pressure sensor detects pressure balance in the sleeping tank 1 of gaseous pressure and desalination in P to surge tank 6, matched using the sampling pipe The online grease detection sensor T1 set is to flowing through or stream is deposited the medium character of the sampling pipe and detected, and directly or according to needing It will test result or detection judging result send DCS/PLC desalination control system to；It is detected as gaseous pressure sensor P When gaseous pressure and the sleeping pressure inside the tank of desalination balance in buffer tank 6, closes the controlling of sampling valve V1 and open feed back control valve V2 PU is pumped with feed back to crouch 1 loopback medium of tank to desalination, until liquid level detecting sensor T2 can't detect liquid medium, closes feed back pump PU and feed back control valve V2.
When open the thief hatch draw sampling pipe configuration controlling of sampling valve V1 after, make desalination crouch tank 1 in medium in desalination Sampled pipe inflow buffer tank 6 detects gaseous pressure in surge tank 1 to gaseous pressure sensor P and takes off under pressure in sleeping tank 1 In the sleeping tank 1 of salt when pressure balance, is first detected in line grease detection sensor T1 and close the controlling of sampling valve in sampling pipe after medium V1 first closes the controlling of sampling valve V1 and detects medium in sampling pipe after line grease detection sensor T1, then opens feed back control Valve V2 and feed back processed pump PU and crouch 1 loopback medium of tank to desalination, until liquid level detecting sensor T2 can't detect liquid medium, close Feed back pumps PU and feed back control valve V2.
The detection of sleeping 1 oil-water interface of tank of desalination is successively examined from high to low or from low to high under the control of intelligent controller 7 Survey the medium character of the sleeping each thief hatch liquid level of tank 1 of desalination:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller 7 Determine desalination and crouch 1 oil-water interface of tank at highest thief hatch, and is transmitted to DCS/PLC desalination control system；If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then determine that sleeping 1 oil-water interface of tank of desalination exists by intelligent controller 7 At the low thief hatch, and transmitted to DCS/PLC desalination control system；
When detecting from low to high, if detecting that the medium of lowest order thief hatch liquid level for oil, is sentenced by intelligent controller 7 Determine desalination and crouches 1 oil-water interface of tank in minimum thief hatch hereinafter, and transmitting to DCS/PLC desalination control system；If detecting two When the medium of a height neighbouring sample oral fluid position is respectively oil and water, then sleeping 1 oil-water interface of tank of desalination is determined by intelligent controller 7 It is transmitted at the low thief hatch, and to DCS/PLC desalination control system.
Liquid level detecting sensor T2 configuration is in the middle and lower part side of buffer tank 6, and described to summarize 23 interface of sampling pipe low In the liquid level detecting sensor T2 of buffer tank 6.The distance for summarizing 23 interface of sampling pipe to 6 bottom of buffer tank is level sensing biography Sensor T2 to 6 bottom distance of buffer tank 1/2 or so.
The feed back pump PU is packed in above buffer tank 6.Sleeping 1 bottom surface of tank of the desalination, which draws to be connected to, leads to sewage-treatment plant Sewage efferent duct 26 and draw and be connected to medium input pipe 27, the sewage efferent duct 26 and medium input pipe 27 are each configured with electricity The even sewage output control valve V3 and medium input control valve V4 of DCS/PLC desalination control system.Multiple thief hatch centers are located at In same plane, and the plane and the sleeping 1 axis oblique of tank of desalination.
The desalination crouches pot bottom respectively by the feed pipe connection high position storage tank with inlet control valve and by with dirt The sewage pipe connection sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination control System processed.When detecting that oil-water interface is higher than a setting high position in the sleeping tank of desalination, DCS/PLC desalination control system turns on sewage Exhaust-control valve crouches sewage in tank to sewage-treatment plant discharge desalination, until oil-water interface reaches setting low level in tank is crouched in desalination When, DCS/PLC desalination control system is shut off sewage discharge control valve, stops sewerage；When needing to feed, DCS/PLC desalination Control system opens inlet control valve charging.
The method of the present invention and system are: intelligent controller can will be serially connected in the sleeping tank artificial detection pipe of desalination in the form of threeway Online grease detection sensor real-time Transmission on line returns the DCS/PLC desalination control system of control room, so that DCS/PLC desalination Control system carries out corresponding process flow according to this data.Intelligent controller real-time monitoring is mounted on the gas phase pressure on buffer tank Force snesor, when the pressure in buffer tank crouches pressure inside the tank close to desalination, intelligent controller will start feed back pump, by buffer tank In medium loopback back off salt crouch tank.Intelligent controller is made entirely by the controlling of sampling valve that control is mounted on automatic sampling pipe System can work in continuous sampling state.Intelligent controller can control the more online grease detection sensor institutes of set of monitoring simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control: all being adopted in all hand stop valve standard-sized sheets and manually Under the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium for first making desalination crouch in tank passes through sampling Pipe indentation prestores the buffer tank of gas to caching pressure tank and the sleeping pressure tank balance of desalination, then by concatenating with the controlling of sampling valve Online grease detection sensor detect controlling of sampling valve where medium character in sampling pipe, the medium character measured It is exactly that the sampling pipe draws medium character in the sleeping tank of desalination of the thief hatch position connect；It is when measuring highest order thief hatch medium When water or other height thief hatch media are water and when more high-order thief hatch is oil, and intelligent controller is just above-mentioned medium It is transmitted as real-time oil-water interfaces information to DCS/PLC desalination control system the thief hatch position of water.
The controlling of sampling valve on the sampling pipe of connection highest order thief hatch is opened, the medium for making desalination crouch in tank is adopted by this The sampling pipe indentation that sample control valve is matched prestores the buffer tank of gas, the online grease detection sensor pair which matches Medium character in the sampling pipe is detected, and the signal that the thief hatch high position is water is transferred to the DCS/PLC desalination Control system.
The online grease detection sensor that the controlling of sampling valve string is matched detects the medium character in the sampling pipe；And Testing result is transferred to the DCS/PLC desalination control system, and repeats aforementioned correlation step.
After adopting the above technical scheme, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system tool It can be carried out high-frequency water level detecting, and be avoided that discharge oiliness is situated between, the advantages of environment-friendly high-efficiency.

Claims (10)

1. a kind of electric desalting equipment oil-water interfaces on-line monitoring and control method, in the sleeping tank of the closed pressure resistant desalination of electric desalting equipment Multiple manual sampling pipes for being equipped with hand stop valve and manual sampling valve side by side, respectively that more equation of equal altitude positions thief hatch is drawn, electricity The DCS/PLC desalination control system of desalter carries out corresponding desalination according to oil-water interface position in the sleeping tank of the desalination measured in real time Control, it is characterised in that every manual sampling pipe is drawn by sampling threeway respectively between its hand stop valve and manual sampling valve Match the automatic sampling pipe of controlling of sampling valve out, multiple sampling pipes automatic side by side prestore the close of gas by summarizing sampling pipe connection again Close pressure-resistant buffer tank lower part；Outside configuration is higher than the liquid level detecting sensor for summarizing sampling interface tube in the middle part of buffer tank, top is matched Connect gaseous pressure sensor；
Under automatic controller control: fully closed in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of, opening a controlling of sampling valve makes medium flow to buffer tank, using sampling pipe automatic where controlling of sampling valve or Summarize that sampling pipe matches after line grease detection sensor carries out delay detection to medium character in sampling pipe, close the sampling control Valve processed；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination crouch pressure tank balance, pumped using feed back Medium in buffer tank is not transmitted back to desalination and crouched tank by return pipeline countercurrently, until liquid level detecting sensor detects locating for it Feed back pump is closed when buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow into buffer tank, the buffer tank detected to gaseous pressure sensor Interior gaseous pressure and desalination crouch pressure tank balance when, using sampling pipe automatic where the controlling of sampling valve or summarize sampling pipe and match After line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；It is pumped using feed back Medium in buffer tank is not transmitted back to desalination and crouched tank by return pipeline countercurrently, until liquid level detecting sensor detects locating for it Feed back pump is closed when buffer tank inner height is gas phase stops feed back.
2. method according to claim 1, it is characterised in that return pipeline countercurrently is not that end is led to from the top of buffer tank The feed back pipe of lower part or end connection buffer tank lower part configuration feed back pump and check (non-return) valve, feed back tube head end connect desalination in buffer tank Sleeping tank or sampling threeway and the controlling of sampling valve for connecting the automatic sampling pipe that highest thief hatch or highest and lowest thief hatch are drawn Between.
3. method according to claim 2, it is characterised in that connection highest thief hatch or highest and lowest thief hatch draw Feed back tube head section between the sampling threeway and controlling of sampling valve of automatic sampling pipe opens front opening configured with feed back pump, feed back pumps The feed back control valve closed after closing；
Feed back pipe between the sampling threeway and controlling of sampling valve for connecting the automatic sampling pipe that highest and lowest thief hatch is drawn When the feed back control valve closed after head section opens front opening configured with feed back pump, feed back pump is closed, Jie from high-order thief hatch Matter is transmitted back to the feed back pipe between the sampling threeway and controlling of sampling valve of the automatic sampling pipe of highest thief hatch extraction, comes from low level The medium of thief hatch is transmitted back to the feed back between the sampling threeway for the automatic sampling pipe that minimum thief hatch is drawn and controlling of sampling valve Pipe.
4. method according to claim 1, it is characterised in that the automatic sampling pipe concatenates two in controlling of sampling valve tract Hold the lateral detection pipe for being greater than automatic sampling pipe diameter with end plate or blue disk, diameter, the online grease detection sensor configuration In one end end plate or Lan Panshang of lateral detection pipe；
The sampling pipe concatenation both ends of summarizing are greater than the lateral detection pipe for summarizing sampling pipe diameter, institute with end plate or blue disk, diameter Online grease detection sensor configuration is stated in one end end plate or Lan Panshang of lateral detection pipe.
5. -4 any the method according to claim 1, it is characterised in that the sampling pipe that summarizes is at the end of its Connection Cache tank Section connects downwards the sampling branch pipe with sampling branch valve manually by sampling Zhi Santong；Configuration is connected up at the top of the buffer tank to use The manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve are prestored in adjusting buffer tank.
6. de- in electricity for realizing the on-line monitoring of electric desalting equipment oil-water interfaces described in claim 1 and the system of control method The closed pressure resistant desalination of salt equipment crouch that the more equation of equal altitude position thief hatch of tank draw it is multiple side by side, be equipped with hand stop valve and hand respectively The DCS/PLC desalination control system of the manual sampling pipe of dynamic sampling valve, electric desalting equipment crouches in tank according to the desalination measured in real time Oil-water interface position carries out corresponding desalination control, it is characterised in that every manual sampling pipe is in its hand stop valve and sampling manually Draw the automatic sampling pipe for matching controlling of sampling valve between valve by sampling threeway respectively, multiple sampling pipes automatic side by side pass through remittance again Total sampling pipe connection prestores the closed pressure resistant buffer tank lower part of gas；Outside configuration, which is higher than, in the middle part of buffer tank summarizes sampling interface tube Liquid level detecting sensor, top be coupled gaseous pressure sensor；
Under automatic controller control: fully closed in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of, opening a controlling of sampling valve makes medium flow to buffer tank, using sampling pipe automatic where controlling of sampling valve or Summarize that sampling pipe matches after line grease detection sensor carries out delay detection to medium character in sampling pipe, close the sampling control Valve processed；When gaseous pressure in the buffer tank that gaseous pressure sensor detects and desalination crouch pressure tank balance, pumped using feed back Medium in buffer tank is not transmitted back to desalination and crouched tank by return pipeline countercurrently, until liquid level detecting sensor detects locating for it Feed back pump is closed when buffer tank inner height is gas phase stops feed back；
Or under automatic controller control: complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves Under the premise of closing, opening a controlling of sampling valve makes medium flow into buffer tank, the buffer tank detected to gaseous pressure sensor Interior gaseous pressure and desalination crouch pressure tank balance when, using sampling pipe automatic where the controlling of sampling valve or summarize sampling pipe and match After line grease detection sensor detects medium character in sampling pipe, close the controlling of sampling valve；It is pumped using feed back Medium in buffer tank is not transmitted back to desalination and crouched tank by return pipeline countercurrently, until liquid level detecting sensor detects locating for it Feed back pump is closed when buffer tank inner height is gas phase stops feed back.
7. system according to claim 6, it is characterised in that return pipeline countercurrently is not that end is led to from the top of buffer tank The feed back pipe of lower part or end connection buffer tank lower part configuration feed back pump and check (non-return) valve, feed back tube head end connect desalination in buffer tank Sleeping tank or sampling threeway and the controlling of sampling valve for connecting the automatic sampling pipe that highest thief hatch or highest and lowest thief hatch are drawn Between.
8. system according to claim 7, it is characterised in that connection highest thief hatch or highest and lowest thief hatch draw Feed back tube head section between the sampling threeway and controlling of sampling valve of automatic sampling pipe opens front opening configured with feed back pump, feed back pumps The feed back control valve closed after closing；
Feed back pipe between the sampling threeway and controlling of sampling valve for connecting the automatic sampling pipe that highest and lowest thief hatch is drawn When the feed back control valve closed after head section opens front opening configured with feed back pump, feed back pump is closed, Jie from high-order thief hatch Matter is transmitted back to the feed back pipe between the sampling threeway and controlling of sampling valve of the automatic sampling pipe of highest thief hatch extraction, comes from low level The medium of thief hatch is transmitted back to the feed back between the sampling threeway for the automatic sampling pipe that minimum thief hatch is drawn and controlling of sampling valve Pipe.
9. system according to claim 6, it is characterised in that the automatic sampling pipe concatenates two in controlling of sampling valve tract Hold the lateral detection pipe for being greater than automatic sampling pipe diameter with end plate or blue disk, diameter, the online grease detection sensor configuration In one end end plate or Lan Panshang of lateral detection pipe；
The sampling pipe concatenation both ends of summarizing are greater than the lateral detection pipe for summarizing sampling pipe diameter, institute with end plate or blue disk, diameter Online grease detection sensor configuration is stated in one end end plate or Lan Panshang of lateral detection pipe.
10. according to any system of claim 6-9, it is characterised in that the sampling pipe that summarizes is in its Connection Cache tank Latter end connects downwards the sampling branch pipe with sampling branch valve manually by sampling Zhi Santong；Configuration is connected up at the top of the buffer tank The manual vent valve of gas flow or the blow-down pipe of automatic controller control blow valve are prestored for adjusting buffer tank.
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CN108051478A (en) * 2018-01-24 2018-05-18 北京北方科诚信息技术股份有限公司 A kind of automatic water-stopping device of continuous sampling detection

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