CN114673714A - Hydraulic oil quality online guarantee system of hydraulic hoist of hydropower station and control method thereof - Google Patents
Hydraulic oil quality online guarantee system of hydraulic hoist of hydropower station and control method thereof Download PDFInfo
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- CN114673714A CN114673714A CN202210283163.XA CN202210283163A CN114673714A CN 114673714 A CN114673714 A CN 114673714A CN 202210283163 A CN202210283163 A CN 202210283163A CN 114673714 A CN114673714 A CN 114673714A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/005—Filling or draining of fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
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- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
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Abstract
The invention relates to an online quality guarantee system for hydraulic oil of a hydraulic hoist of a hydropower station, which comprises an oil return main pipe, an oil supply main pipe and an accident oil main pipe, wherein the oil return main pipe, the oil supply main pipe and the accident oil main pipe are all communicated with an oil tank of the hydraulic hoist through pressure hoses; further comprising: the oil return system is communicated with the oil return main pipe and comprises an oil return pump and an oil return tank, and the oil return pump is arranged between the oil return tank and the oil return main pipe; the oil supply system is communicated with the oil supply main pipe and comprises an oil supply pump and an oil purification tank, and the oil supply pump is arranged between the oil purification tank and the oil supply main pipe; and the oil filtering system is connected between the oil return system and the oil supply system. The hydraulic oil monitoring system can monitor the hydraulic oil of the hydraulic hoist of the hydropower station in real time, and timely replace and filter the hydraulic oil, so that the stable and safe operation of the hydropower station is guaranteed.
Description
Technical Field
The invention relates to the technical field of hydropower station operation, in particular to an online guarantee system for the quality of hydraulic oil of a hydraulic hoist of a hydropower station and a control method thereof.
Background
In the hydraulic system engineering, especially in the hydropower station, in order to ensure the safe operation of power plant equipment, an accident rapid gate is arranged at the water inlet part of a water diversion power generation system, and when a unit is in runaway, water flow can be rapidly cut off in flowing water so as to treat or prevent the occurrence of serious accidents such as flooding of the downstream water channel and the like, thereby ensuring the safe operation of the power plant and the equipment. In order to realize the rapid door closing of the emergency rapid gate in a short time, the emergency rapid gate is controlled to be opened and closed by adopting a hydraulic hoist structure form at present, so that the safe and stable operation of the emergency rapid gate is directly related to the safety of a power plant and a power station.
Meanwhile, in order to ensure the safe operation of the hydropower station dam, a certain number of flood discharge holes are formed in the dam body, a working arc door is adopted to block water at ordinary times, when the incoming water is large, the working arc door needs to be opened to carry out emergency flood discharge treatment, the water level of a power station reservoir area is controlled at a safe height, and the occurrence of dam overflowing accidents is prevented; similarly, the working arc door is controlled to be opened and closed by adopting a hydraulic hoist structure form at present, so that the safe and stable operation of the hydraulic hoist is directly related to the safe operation of a power plant and a power station, the key medium for the operation of the hydraulic hoist is hydraulic oil, and if the quality of the hydraulic oil is not good, the valve core of a hydraulic system executing mechanism in the hydraulic hoist can be refused, so that the normal operation of emergency equipment and flood discharge equipment is influenced, the equipment can not play the certain guarantee function at the critical moment, and great danger is formed for the safe operation of the power station, so that the oil quality of the hydraulic hoist in the field is well controlled to be a key factor for guaranteeing the safe operation of the hydraulic hoist.
For hydraulic start-stop equipment operated on site, the main factor influencing the quality of hydraulic oil is the granularity and the moisture of the oil, and the existing main means for controlling the quality of the oil is to extract an oil sample to send to manual detection when a generator set is overhauled once a year, and if the granularity and the moisture exceed standards, the oil is filtered.
The prior mode has the following disadvantages:
1. the hydraulic oil quality detection once a year cannot find the signs of oil liquid deterioration in time.
2. If the oil quality is found to be poor by detection, the time for improving the oil quality is longer. If the conventional granularity and water seal exceed the standard, oil filtering equipment needs to be transported to the oil equipment part needing to be processed, the oil is circularly filtered by using an equipment oil tank as a container, and an oil sample is periodically sent to manual detection during the period until the oil detection result is qualified. If the oil is found to be deteriorated by detection, unqualified oil needs to be pumped and drained out of the oil tank of the hydraulic hoist, the oil is stored by adopting temporary oil storage equipment, then the oil tank and each executing mechanism of the hydraulic system are cleaned, after the cleaning is finished, new oil (the general granularity can exceed the standard) is injected into the oil tank, the oil tank is used as a container to perform circulating filtration treatment on the oil after the oil injection is finished, and the oil sample is periodically sent to manual detection during the period until the oil detection result is qualified. For emergency equipment, the two processing modes have long outage time and certain potential safety hazard risks.
3. The existing equipment has no emergency oil supplementing function. If external leakage occurs, oil in the oil tank cannot meet the required liquid level of equipment operation, and therefore the hydraulic hoist system cannot work under extreme conditions.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an online guarantee system for the quality of hydraulic oil of a hydraulic hoist of a hydropower station, which can monitor the quality state of the oil of equipment in real time, provide decision data support for managers to maintain the oil, and filter particles and water in the oil, so that the quality of the hydraulic oil is improved, the treated hydraulic oil can be quickly replaced into operating equipment, the oil of the oil tank of the equipment can be quickly supplemented, the oil of accident oil can be quickly discharged, and the safe operation of the hydraulic hoist is guaranteed.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the system comprises an oil return main pipe, an oil supply main pipe and an accident oil main pipe, wherein the oil return main pipe, the oil supply main pipe and the accident oil main pipe are all communicated with an oil tank of the hydraulic hoist through pressure hoses; it still includes: the oil return system is communicated with the oil return main pipe and comprises an oil return pump and an oil return tank, and the oil return pump is arranged between the oil return tank and the oil return main pipe; the oil supply system is communicated with the oil supply main pipe and comprises an oil supply pump and an oil purification tank, and the oil supply pump is arranged between the oil purification tank and the oil supply main pipe; and the oil filtering system is connected between the oil return system and the oil supply system.
In a preferable scheme, the oil filtering system comprises a water-gas filtering unit and/or a particle filtering unit, wherein the water-gas filtering unit comprises a vacuum container connected to the rear end of the oil return tank and a vacuum pump arranged at the top of the vacuum container, an oil suction pump is connected between the vacuum container and the oil return tank, a heater is arranged in the vacuum container, the top of the vacuum container is connected with an oil mist separator and an air filter, and the top of the vacuum container is also connected with a safety valve; the particle filtering unit comprises a discharge pump connected to the rear end of the oil suction pump and a particle filter connected to the rear end of the discharge pump, and the inlet and the outlet of the particle filter are both connected with a one-way valve.
In a preferred scheme, the oil filtering system comprises a particle filtering unit and a water-gas filtering unit, the outlet of the oil suction pump is connected with the inlet of the three-position five-way reversing valve, and the inlets and outlets of the water-gas filtering system and the particle filtering unit are respectively connected with the remaining four ports of the three-position five-way reversing valve, so that when the three-position five-way reversing valve is positioned at three valve positions, the independent operation of the water-gas filtering system, the independent operation of the particle filtering unit and the simultaneous operation of the water-gas filtering system and the particle filtering unit are respectively realized; the rear end of the particle filtering unit is respectively communicated with the clean oil tank and the oil return tank through a two-position three-way reversing valve.
In the preferred scheme, oil tanks of a plurality of hydraulic hoists are communicated with the oil return main pipe, the oil supply main pipe and the accident oil main pipe in parallel, and pipelines among the oil return main pipe, the oil supply main pipe, the accident oil main pipe and the oil tanks of all the hydraulic hoists are connected with a manual ball valve in a normally open state and an electric ball valve in a normally closed state.
In a preferable scheme, the tops of the oil return tank, the clean oil tank and the vacuum container are connected with an air filter, and the top of the vacuum container is also connected with an oil mist separator.
In the preferred scheme, the bottom of the oil purification tank is communicated with an accident oil main pipe, the oil purification tank is connected with an electric ball valve in a normally closed state and a manual ball valve in a normally open state on a pipeline between the accident oil main pipe, the accident oil main pipe is communicated with an accident oil pool, an accident oil pump is connected between the accident oil pool and the accident oil main pipe, and the rear end of the accident oil pool is connected with an emptying pump.
In a preferable scheme, the hydraulic hoist further comprises a detection device arranged at the lower part of an oil tank of the hydraulic hoist, and the detection device comprises one or a combination of a temperature sensor, a liquid level sensor, a moisture sensor and a pollution sensor.
In the preferred scheme, the system further comprises a local control unit, the local control unit comprises a local control cabinet, an electric control system and a PLC control system are installed in the local control cabinet, the PLC control system is used for controlling the actions of an oil return pump, an oil suction pump, a vacuum pump, an oil supply pump, an accident oil pump, a discharge pump, an emptying pump and an electric ball valve, and an operation state indicator lamp, a display screen and a control button are further arranged on the local control cabinet.
In a preferred scheme, the system further comprises a remote control unit, wherein the remote control unit comprises a server and an exchanger, a computer terminal and a wireless ap which are connected with the exchanger, and a mobile inquiry terminal communicated with the wireless ap.
The invention also provides a control method of the hydraulic oil quality online guarantee system of the hydraulic hoist of the hydropower station, which comprises the following steps:
1) setting target values of moisture, temperature, liquid level and pollution degree of oil of the hydraulic hoist, and detecting the moisture, temperature, liquid level and pollution degree of the oil in a mailbox of the hydraulic hoist by a detection device;
2) comparing the detection result with a target value, if the oil is unqualified and the equipment is in a maintenance state, performing oil return operation by the system, after all the oil in the oil tank of the hydraulic hoist is extracted into an oil return tank, starting to supply oil to the oil tank of the hydraulic hoist, supplying qualified hydraulic oil in the oil purification tank to the oil tank of the hydraulic hoist, and stopping supplying oil after the device to be detected detects that the oil level of the oil in the oil tank of the hydraulic hoist reaches the standard;
3) filtering the oil pumped back into the oil return tank according to the detection result;
4) when the detection result is that the oil particle size exceeds the standard, starting the particle filtering unit to operate independently: controlling the on-way electric ball valve and the oil suction pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the particle filter to complete particle filtration by the action of the three-position five-way valve and to flow back into the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
5) When the detection result is that the moisture or the gas of the oil exceeds the standard, the water-gas filtering unit is started to operate independently: controlling the on-way electric ball valve, the oil suction pump and the vacuum pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the vacuum tank to finish water and gas filtration by the action of the three-position five-way valve, and refluxing into the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
6) when the detection result is that the oil particle size and the moisture or the gas simultaneously exceed the standard, starting the comprehensive oil filtering operation: controlling the on-way electric ball valve, the oil suction pump and the discharge pump to act, and enabling the oil liquid flowing in through the oil suction pump to flow into the vacuum tank firstly to finish water and gas filtration through the action of the three-position five-way valve, then to flow into the particle filter through the discharge pump to finish particle filtration, and to flow back to the oil return tank until the detection device at the bottom of the oil return tank reaches the standard and then to stop running;
7) when the detection result is that the oil liquid level in the oil tank of the hydraulic hoist is lower than the set minimum liquid level, the oil supply operation is started: controlling the oil supply pump and the on-way electric ball valve to act, and conveying the oil in the oil purifying tank into an oil tank of the hydraulic hoist until the liquid level of the oil reaches the standard;
8) when the testing result is that fluid is rotten and equipment is in the maintenance state, start the oil extraction operation: and starting the accident oil pump and the on-way electric ball valve, quickly emptying the deteriorated oil in the oil tank of the hydraulic hoist, and selecting a machine for oil supply after the maintenance personnel finish cleaning the oil tank of the hydraulic hoist and accessories immersed in the deteriorated oil.
Compared with the prior art, the invention has the following beneficial effects:
1. the hydraulic oil purifier can quickly replace hydraulic oil needing to be replaced and purified, does not need to stop for a long time to wait for treating the hydraulic oil, greatly shortens the time of maintenance, and greatly saves the maintenance cost.
2. The hydraulic oil quality monitoring system can monitor the hydraulic oil quality in real time, can find and process the hydraulic oil in time when the hydraulic oil quality does not reach the standard, quickly changes the oil reaching the standard during processing, and then performs purification and filtration processing on the oil not reaching the standard, so that the monitoring is timely, the filtration is efficient, the stable and reliable uninterrupted operation of a hydraulic start-stop unit is ensured, and the safe, stable and efficient operation of a hydropower station is further ensured.
3. When the hydraulic oil level in the hydraulic hoist mailbox is insufficient, the hydraulic hoist mailbox oil level detection device can detect and complete oil supplement in time, and unpredictable danger and loss caused by the fact that the hoist works under extreme working conditions are avoided.
4. The oil liquid state monitoring device can be used for remotely detecting and monitoring the oil liquid state of the hoist and correspondingly processing the oil liquid state according to different detection results, and has extremely good convenience and high efficiency.
Drawings
Fig. 1 is a schematic system structure according to an embodiment of the present invention.
Fig. 2 is a schematic system structure of the preferred embodiment of the present invention.
FIG. 3 is a logic block diagram of the operation of the system of the present invention.
In the drawings, wherein: 101. an oil return tank oil liquid detection device; 1, an oil liquid detection device of an equipment oil tank; 201. an oil return main pipe; 202. an oil supply main pipe; 203. an emergency oil main; 2, equipment oil return electric ball valve; 2, an equipment oil return manual ball valve; 2, 3, and an electric ball valve of an equipment oil return pipe; 2, 4, and an electric ball valve for supplying oil to equipment; 2, equipment oil supply manual ball valve; 2, 6, electric ball valve of equipment oil supply pipe; 2, 7, a device accident oil electric ball valve; 2, 8, equipment accident oil manual ball valve; 2, 9, an equipment accident oil pipe electric ball valve; 301. a manual ball valve at the inlet of the oil return pump; 302. an oil return pump outlet manual ball valve; 303. an oil filtering and sucking port electric ball valve; 304. a manual ball valve of an oil filtering and sucking port; 305. a vacuum container emptying ball valve; 306. an oil filtering return port electric ball valve; 307. a manual ball valve of an oil filtering return port; 308. oil pouring manual ball valve; 309. a manual ball valve of an oil supply and suction port; 310. an electric ball valve of an oil supply and suction port; 311. an oil supply manual ball valve; 312. an oil return tank emptying ball valve; 313. an emergency oil manual ball valve of an oil return tank; 314. an emergency oil electric ball valve; 315. a clean oil tank emptying ball valve; 316. an accident oil manual ball valve of the oil purifying tank; 317. an electric ball valve for accident oil of the oil purifying tank; 318. a manual ball valve of an accident oil suction port; 319. an oil discharge and suction port manual ball valve of the accident oil pool; 320. an electric ball valve of an oil discharge and suction port of the emergency oil pool; 321. an emergency oil pool oil discharge outlet manual ball valve; 322. an oil outlet electric ball valve of an emergency oil pool; 401. an oil return pump; 402. an oil suction pump; 403. a vacuum pump; 404. a discharge pump; 405. an oil supply pump; 406. an emergency oil pump; 407. emptying the pump; 501. returning the oil tank; 502. a clean oil tank; 503. an oil return tank air filter; 504. a visible liquid level meter of the oil return tank; 505. a clean oil tank air cleaner; 506. a visible liquid level meter of the clean oil tank; 507. an accident oil pool; 601. an oil absorption filter; 602. a shock absorbing throat; 603. an overflow valve of the oil suction pump; 604. an oil suction pump outlet one-way valve; 605. a vacuum vessel; 606. a heater; 607. a digital display sensor; 608. a pointer mechanical pressure gauge; 609. a thermometer; 610. a safety valve; 611. a vacuum container air cleaner; 612. an oil mist separator; 613. a vacuum vessel visual level gauge; 614. a discharge pump relief valve; 615. a three-position five-way reversing valve; 616. a particulate filter inlet check valve; 617. a particulate filter; 618. a differential pressure transmitter; 619. a particulate filter outlet vent ball valve; 620. a particulate filter outlet check valve; 621. a two-position three-way reversing valve; 7. a local control cabinet; 7-1, an indicator light; 7-2, a PLC control system; 7-3, a touch screen; 7-4, a control button; 7-5, an electric control system; 71. a server; 72. a switch; 73. a wireless AP; 74. a mobile inquiry terminal; 75. and (4) a computer terminal.
Detailed Description
The technical solution of the present invention is further described with reference to the drawings and the embodiments.
In the description of the present invention, the device numbers of the connected hydraulic hoist are denoted, and the corresponding reference numerals denote components corresponding to the numbered devices, for example, when 3 hydraulic hoists are connected in the present embodiment, the device oil return manual ball valves corresponding to the 3 hoist are respectively denoted by the numbers 212, 222, and 232; in the following description, according to professional descriptions in the hydraulic and electrical fields, in order to facilitate specification and general understanding, the electric valves and pumps involved in the system are numbered so as to facilitate understanding of the system operation state through an intuitive electric action table, and the specific numbering is as follows:
in addition, the front end of the invention refers to the upstream of the component, the lower end refers to the downstream of the component, but does not mean that no other components are connected between the component and the front end or rear end component; the valve is filled black indicating the initial position is fully closed and the valve is not filled indicating the initial position is fully open.
Example 1
Referring to the attached drawing 1, as an embodiment of the invention, an online guarantee system for hydraulic oil quality of a hydraulic hoist of a hydropower station is provided, which comprises an oil return header 201, an oil supply header 202 and an accident oil header 203, wherein the oil return header 201, the oil supply header 202 and the accident oil header 203 are all communicated with an oil tank of a hydraulic hoist through pressure hoses 2 x 10, and can be arranged and installed on a side wall of a passage along a running device, and each hoist to be detected is provided with corresponding valves 2 x 1-2 x 9 and 3 quick joint hoses 2 x 10 according to the position of the field device, so that the device can be quickly connected with the existing running device, and the universality of the device is realized; the emergency oil header 203 is communicated with an emergency oil pool 507, a pipeline between the emergency oil header 203 and the emergency oil pool 507 is connected with an emergency oil pump 407, an emergency oil suction port manual ball valve 318 is installed between the emergency oil pump 407 and the emergency oil header 203, a vent pump 307 is installed at the rear end of the emergency oil pool, an emergency oil pool oil discharge port manual ball valve 319 and an emergency oil pool oil discharge port electric ball valve 320 are installed on a pipeline between the vent pump 307 and the emergency oil pool 407, and an emergency oil pool oil discharge port manual ball valve 321 and an emergency oil pool oil discharge port electric ball valve 322 are installed at the rear end of the vent pump 307; it still includes: the oil return system is communicated with the oil return header pipe 201 and comprises an oil return pump 401 and an oil return tank 501, an oil return tank emptying ball valve 312 is installed at the bottom of the oil return tank 501, the oil return pump 401 is installed between the oil return tank 501 and the oil return header pipe 201, an oil return pump inlet manual ball valve 301 is installed at the inlet of the oil return pump 401, an oil return pump outlet manual ball valve 302 is installed at the outlet of the oil return pump inlet manual ball valve, the bottom of the oil return tank 501 is communicated with the accident oil header pipe 203, and an oil return tank accident oil manual ball valve 313 and an accident oil electric ball valve 314 are installed on the pipe section; the oil supply system is communicated with the oil supply main pipe 202 and comprises an oil supply pump 405 and a clean oil tank 502, the bottom of the clean oil tank 502 is provided with a clean oil tank emptying ball valve 315, the oil supply pump 405 is arranged between the clean oil tank 502 and the oil supply main pipe 202, the oil supply pump 405 is provided with a discharge pump overflow valve 614, the clean oil tank 502 is communicated with the accident oil main pipe 203, and the pipe section is provided with a clean oil tank accident oil manual ball valve 316 and a clean oil tank accident oil electric ball valve 317; the oil filtering system is connected between the oil return system and the oil supply system; the oil filtering system comprises a water-gas filtering unit, the water-gas filtering unit comprises a vacuum container 605 connected with the rear end of the oil returning tank 501 and a vacuum pump 403 arranged on the top of the vacuum container 605, so that a vacuum or near vacuum state is formed in the vacuum container 605, thus facilitating the separation of air in oil from oil and rapidly separating the air in the oil, an oil suction pump 402 is connected between the vacuum container 605 and the oil returning tank 501, an oil suction filter 601 is arranged at the inlet of the oil suction pump 402, an oil suction port electric ball valve 303 and an oil suction port manual ball valve 304 are arranged at the inlet of the oil suction pump to primarily filter the oil, in order to reduce the system vibration, a shock absorption throat 602 is connected at the upper end of the oil suction pump, an oil suction pump 603 is also arranged at the oil suction pump 402, an oil suction pump outlet one-way valve 604 is arranged at the rear end of the oil suction pump 402, a pointer mechanical pressure gauge 608 and a thermometer are connected on the vacuum container 605, a vacuum vessel visual liquid level meter 613 is arranged outside a vacuum vessel 605 to monitor the state in the vacuum vessel 605, a heater 606 is arranged in the vacuum vessel 605 to accelerate the volatilization and precipitation of air in oil, an oil mist separator 612 and an air filter 611 are connected to the top of the vacuum vessel 605, a safety valve 610 is further connected to the top of the vacuum vessel 605, a return oil tank visual liquid level meter 504 is arranged outside the return oil tank 501, a clean oil tank visual liquid level meter 506 is arranged outside the clean oil tank 502, and a vacuum vessel emptying ball valve 305 is connected to the bottom of the vacuum vessel 605 in order to facilitate the observation of the liquid levels in the return oil tank 501 and the clean oil tank 502.
In a traditional operation mode, the hoist is periodically overhauled once a year, if the quality of oil is found to be poor through detection, the oil is extracted and improved, and the time for improving the quality of the oil is long. If the conventional granularity and water seal exceed the standard, oil filtering equipment needs to be carried to the part of the oil equipment needing to be treated, the oil is circularly filtered by taking an equipment oil tank as a container, and oil samples are periodically manually detected until the oil detection result is qualified.
After this embodiment uses, then can irregularly detect, when it is qualified to detect fluid quality portion, take unqualified fluid out fast, then mend qualified fluid can, it is short to improve fluid quality required time, and is less to the influence of normal operating.
Example 2
Referring to fig. 1 to fig. 3, as a preferred embodiment of the present invention, on the basis of embodiment 1, the oil filtering system includes a particle filtering unit and a water vapor filtering unit, the particle filtering unit includes a discharge pump 404 connected to the rear end of the oil suction pump 402 and a particle filter 617 connected to the rear end of the discharge pump 404, an inlet of the particle filter 617 is connected to a particle filter inlet check valve 616, an outlet of the particle filter 617 is connected to a particle filter outlet check valve 620 and a particle filter outlet vent ball valve 619, and a pipeline in which the particle filter 617 is located is provided with a differential pressure transmitter 618 to monitor the pressure difference between the front end and the rear end of the particle filter 617; the outlet of the oil suction pump 402 is connected with the inlet of the three-position five-way reversing valve 615, and the inlets and outlets of the water-gas filtering system and the particle filtering unit are respectively connected with the remaining four ports of the three-position five-way reversing valve 615, so that when the three-position five-way reversing valve 615 is located in three valve positions, the water-gas filtering system operates independently, the particle filtering unit operates independently, and the water-gas filtering system and the particle filtering unit operate simultaneously are respectively realized; the rear end of the particle filtering unit is respectively communicated with the clean oil tank 502 and the return oil tank 501 through a two-position three-way reversing valve 621, an oil filtering return opening electric ball valve 306 and an oil filtering return opening manual ball valve 307 are installed on a pipeline between the particle filtering unit and the return oil tank 501, an oil returning manual ball valve 308 is installed on a pipeline between the particle filtering unit and the clean oil tank 502, an oil supply suction opening manual ball valve 309 and an oil supply suction opening electric ball valve 310 are connected between the clean oil tank 502 and the oil supply pump 405, and an oil supply manual ball valve 311 is installed between the oil supply pump 405 and the oil supply main pipe 202; the oil return header 201, the oil supply header 202 and the accident oil header 203 are connected with oil tanks of the hydraulic hoist in parallel, a pressure hose 2 a 10 between the oil return header 201 and the oil tank of each hydraulic hoist is connected with an equipment oil return manual ball valve 2 a 2 in a normally open state and an equipment oil return electric ball valve 2 a 3 in a normally closed state, and a pipeline between the oil supply header 202 and the oil tank of each hydraulic hoist is connected with an equipment oil supply manual ball valve 2 a 5 in a normally open state and an equipment oil supply electric ball valve 2 a 4 in a normally closed state; the top of the oil return tank 501 is connected with an oil return tank air filter 503, the top of the oil cleaning tank 502 is connected with a clean oil tank air filter 505, the top of the vacuum container 605 is connected with a vacuum container air filter 611, and the top of the vacuum container 605 is also connected with an oil mist separator 612.
In the embodiment, the hydraulic hoist further comprises an equipment oil tank oil detection device 1 x 1 installed at the lower part of an oil tank of the hydraulic hoist, the equipment oil tank oil detection device 1 x 1 comprises a temperature sensor, a liquid level sensor, a moisture sensor and a pollution degree sensor, and an oil return tank oil detection device 101 is installed at the bottom of the oil return tank 501; the system comprises a local control unit and a remote control unit, wherein the local control unit comprises a local control cabinet 7, an electric control system 7-5 and a PLC control system 7-2 are installed in the local control cabinet 7, the PLC control system 7-2 is used for controlling actions of an oil return pump 401, an oil suction pump 402, a vacuum pump 403, a discharge pump 404, an oil supply pump 405, an emergency oil pump 406, an emptying pump 407 and an electric ball valve, and an operation state indicator light 7-1, a display screen 7-3 and a control button 7-4 are further arranged on the local control cabinet 7; the remote control unit comprises a server 71 and a switch 72, and further comprises a computer terminal 75 and a wireless ap73 connected to the switch 72, and a mobile enquiry terminal 74 in communication with the wireless ap 73.
In the man-machine control process, the PLC control system analyzes and processes the data detected by the detection device and then outputs corresponding executing action commands, thereby controlling the effective execution of each component of the device.
The valve comprises a system pipeline along a valve 301-323 and a main pipe valve 2-1-2-9, is used for blocking the on-off of an oil way so as to control the operation treatment of oil in an equipment oil tank as required, and comprises a manual ball valve (code SF), an electric ball valve (code DF) and an emptying ball valve (code FK), wherein the manual ball valve is mainly used for blocking the oil way of the system under the maintenance working condition to create conditions for maintenance personnel to maintain the equipment, the electric ball valve is used for switching on and off the oil way of the system under the operating working condition, the equipment oil tank to be operated can be conducted and connected with a system device to realize the quality improvement treatment of the oil in the equipment oil tank, and the emptying ball valve is arranged at the bottommost part of oil storage equipment and used for emptying the oil in a container.
The oil pump related in the invention is a main power source of the invention, is used for pumping, supplying and discharging oil in the device, and realizes the safe operation of the oil in the device according to the requirement, wherein, a return oil pump 401 is arranged at the front end of a return oil tank 501 of the system device, can pump the unqualified oil in an equipment oil tank back into the return oil tank 501, an oil suction pump 402 is arranged at the oil inlet part of the filtering equipment of the system device and provides oil suction power for the device, a vacuum pump 403 is arranged at the top of a vacuum container 605 of the device and can dehydrate and degas the oil in vacuum, a discharge pump 404 is arranged at the front end of a return oil filter of the system device and provides a power source for the oil filtration of the system device, an oil supply pump 405 is arranged at the rear end of a clean oil tank 502 and can supply the qualified oil in the clean oil tank 502 back into the equipment oil tank, an accident oil pump 406 is arranged at the front end of an accident oil pool 507 and can pump the accident oil pool 507, the emptying pump 407 is installed at the rear end of the accident oil pool 507 and used for pumping and discharging accident oil in the accident oil pool 507 into an outdoor transfer container, so that the accident oil can be conveniently transferred to a hazardous chemical warehouse for centralized processing.
The oil tank related to the invention is the main oil storage equipment of the device, the volume of a single oil tank of the oil tank is 1.5 times of that of the oil tank of the device, the oil tank comprises an oil return tank 501 and an oil purification tank 502, a visual liquid level meter is arranged on the side surface of the oil tank, an air filter is arranged at the top of the oil tank, the oil return tank 501 is used for storing the oil which does not reach the standard in the pumped back oil tank of the device, and the oil purification tank 502 is used for storing the oil which is qualified after being processed by a filtering system of the device.
When the system of the invention is used for treating oil, the oil return treatment, the oil filtering treatment, the oil supply treatment and the accident oil discharge treatment are included; according to the detection result of the detection device 1 x 1, the oil return treatment can be carried out on the equipment in the maintenance state, and qualified oil in the oil purification tank can be quickly replaced into the equipment oil tank; the system can process the oil which does not reach the standard in the oil tank 501 according to the detection result of the detection device 101, and can perform single dehydration and degassing treatment, single particle filtration treatment and comprehensive oil filtration treatment on the oil, and then the oil which reaches the standard is switched to the clean oil tank 502 for standby; meanwhile, the system can quickly supplement oil liquid of the oil tank of the equipment, the liquid level of which does not reach the standard, and can quickly discharge deteriorated oil liquid in time.
The specific control method comprises the following steps:
1) Setting target values of moisture, temperature, liquid level and pollution degree of oil of the hydraulic hoist, and detecting the moisture, temperature, liquid level and pollution degree of the oil in a mailbox of the hydraulic hoist by a detection device;
2) comparing the detection result with a target value, if the oil is unqualified and the equipment is in a maintenance state, performing oil return operation by the system, after all the oil in the oil tank of the hydraulic hoist is extracted into an oil return tank, starting to supply oil to the oil tank of the hydraulic hoist, supplying qualified hydraulic oil in the oil purification tank to the oil tank of the hydraulic hoist, and stopping supplying oil after the device to be detected detects that the oil level of the oil in the oil tank of the hydraulic hoist reaches the standard;
3) filtering the oil pumped back into the oil return tank according to the detection result;
4) when the detection result is that the oil particle size exceeds the standard, starting the particle filtering unit to operate independently: controlling the on-way electric ball valve and the oil suction pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the particle filter to complete particle filtration by the action of the three-position five-way valve and to flow back into the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
5) when the detection result is that the moisture or the gas of the oil exceeds the standard, the water-gas filtering unit is started to operate independently: controlling the on-way electric ball valve, the oil suction pump and the vacuum pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the vacuum tank to finish water and gas filtration by the action of the three-position five-way valve, and refluxing into the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
6) When the detection result is that the oil particle size and the moisture or the gas exceed the standard simultaneously, the comprehensive oil filtering operation is started: controlling the on-way electric ball valve, the oil suction pump and the discharge pump to act, and enabling the oil liquid flowing in through the oil suction pump to flow into the vacuum tank firstly to finish water and gas filtration through the action of the three-position five-way valve, then to flow into the particle filter through the discharge pump to finish particle filtration, and to flow back to the oil return tank until the detection device at the bottom of the oil return tank reaches the standard and then to stop running;
7) when the detection result is that the oil liquid level in the oil tank of the hydraulic hoist is lower than the set minimum liquid level, the oil supply operation is started: controlling the oil supply pump and the on-way electric ball valve to act, and conveying the oil in the oil purifying tank into an oil tank of the hydraulic hoist until the liquid level of the oil reaches the standard;
8) when the testing result is that fluid is rotten and equipment is in the maintenance state, start the oil extraction operation: and starting the accident oil pump and the on-way electric ball valve, quickly emptying the deteriorated oil in the oil tank of the hydraulic hoist, and selecting a machine for oil supply after the maintenance personnel finish cleaning the oil tank of the hydraulic hoist and accessories immersed in the deteriorated oil.
In the control process, under different operation modes, the system electrical action table is as follows:
Electric action meter of system
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The system is characterized in that the oil return main pipe, the oil supply main pipe and the accident oil main pipe are all communicated with an oil tank of the hydraulic hoist through pressure hoses, the accident oil main pipe is communicated with an accident oil pool, and an accident oil pump is connected to a pipeline between the accident oil main pipe and the accident oil pool; it still includes:
the oil return system is communicated with the oil return main pipe and comprises an oil return pump and an oil return tank, and the oil return pump is arranged between the oil return tank and the oil return main pipe;
the oil supply system is communicated with the oil supply main pipe and comprises an oil supply pump and an oil purification tank, and the oil supply pump is arranged between the oil purification tank and the oil supply main pipe; and
And the oil filtering system is connected between the oil return system and the oil supply system.
2. The online quality guarantee system for hydraulic oil of the hydraulic hoist of the hydropower station according to claim 1, characterized in that the oil filtering system comprises a water-gas filtering unit and/or a particle filtering unit:
the water-gas filtering unit comprises a vacuum container connected to the rear end of the oil return tank and a vacuum pump installed at the top of the vacuum container, an oil suction pump is connected between the vacuum container and the oil return tank, a heater is arranged in the vacuum container, the top of the vacuum container is connected with an oil mist separator and an air filter, and the top of the vacuum container is also connected with a safety valve;
the particle filtering unit comprises a discharge pump connected to the rear end of the oil suction pump and a particle filter connected to the rear end of the discharge pump, and the inlet and the outlet of the particle filter are both connected with a one-way valve.
3. The online guarantee system for the hydraulic oil quality of the hydraulic hoist of the hydropower station according to claim 2, which is characterized in that: the oil filtering system comprises a particle filtering unit and a water-gas filtering unit, the outlet of the oil suction pump is connected with the inlet of the three-position five-way reversing valve, and the inlets and the outlets of the water-gas filtering system and the particle filtering unit are respectively connected with the rest four ports of the three-position five-way reversing valve, so that when the three-position five-way reversing valve is positioned at three valve positions, the independent operation of the water-gas filtering system, the independent operation of the particle filtering unit and the simultaneous operation of the water-gas filtering system and the particle filtering unit are respectively realized; the rear end of the particle filtering unit is respectively communicated with the clean oil tank and the oil return tank through a two-position three-way reversing valve.
4. The online guarantee system for the hydraulic oil quality of the hydraulic hoist of the hydropower station according to claim 3, which is characterized in that: the oil return main pipe, the oil supply main pipe and the accident oil main pipe are communicated with oil tanks of a plurality of hydraulic hoists in parallel, and pipelines among the oil return main pipe, the oil supply main pipe, the accident oil main pipe and the oil tanks of all the hydraulic hoists are connected with a manual ball valve in a normally open state and an electric ball valve in a normally closed state.
5. The online guarantee system for the hydraulic oil quality of the hydraulic hoist of the hydropower station according to claim 4, which is characterized in that: the top parts of the oil return tank, the oil purification tank and the vacuum container are all connected with an air filter, and the top part of the vacuum container is also connected with an oil mist separator.
6. The online guarantee system for the hydraulic oil quality of the hydraulic hoist of the hydropower station according to claim 1, which is characterized in that: the oil purification tank bottom with accident oil house steward intercommunication, and the oil purification tank with connect the electric ball valve of a normally closed state and the manual ball valve of normally open state on the pipeline between the accident oil house steward, accident oil house steward intercommunication accident oil bath is connected the accident oil pump between accident oil bath and the accident oil house steward, the evacuation pump is connected to accident oil bath rear end.
7. The hydraulic oil quality online guarantee system of the hydraulic hoist of the hydropower station according to claim 4, which is characterized in that: the hydraulic hoist oil tank detection device is characterized by further comprising a detection device arranged on the lower portion of the oil tank of the hydraulic hoist, wherein the detection device comprises one or a combination of a temperature sensor, a liquid level sensor, a moisture sensor and a pollution degree sensor.
8. The hydraulic oil quality online guarantee system of the hydraulic hoist of the hydropower station according to claim 7, which is characterized in that: still include the local control unit, the local control unit includes the local switch board, installation electric control system and PLC control system in the local switch board, PLC control system is used for returning oil pump, oil suction pump, vacuum pump, fuel feed pump, accident oil pump, emission pump, evacuation pump and the action of electronic ball valve including the control, still set up running state pilot lamp, display screen and control button on the local switch board.
9. The hydraulic oil quality online guarantee system of the hydraulic hoist of the hydropower station according to claim 8, which is characterized in that: the remote control unit comprises a server, a switch, a computer terminal connected with the switch, a wireless ap and a mobile inquiry terminal communicated with the wireless ap.
10. The control method of the hydraulic oil quality on-line guarantee system of the hydraulic hoist of the hydropower station as claimed in claim 8, characterized by comprising the following steps:
1) setting target values of moisture, temperature, liquid level and pollution degree of oil of the hydraulic hoist, and detecting the moisture, the temperature, the liquid level and the pollution degree of the oil in a mailbox of the hydraulic hoist by a detection device;
2) comparing the detection result with the target value, if the oil is unqualified and the equipment is in an overhaul state, performing oil return operation by the system, after all the oil in the oil tank of the hydraulic hoist is pumped into the oil return tank, starting to supply oil to the oil tank of the hydraulic hoist, supplying qualified hydraulic oil in the oil purification tank to the oil tank of the hydraulic hoist, and stopping supplying oil to the oil tank after the device to be detected detects that the oil level of the oil in the oil tank of the hydraulic hoist reaches the standard;
3) filtering the oil liquid pumped back into the oil return tank according to the detection result;
4) when the detection result is that the oil particle size exceeds the standard, starting the particle filtering unit to operate independently: controlling the on-way electric ball valve and the oil suction pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the particle filter to complete particle filtration by the action of the three-position five-way valve and to flow back into the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
5) When the detection result is that the moisture or the gas of the oil exceeds the standard, the water-gas filtering unit is started to operate independently: controlling the on-way electric ball valve, the oil suction pump and the vacuum pump to act, and enabling the oil liquid flowing in through the oil suction pump to directly flow into the vacuum tank to finish water and gas filtration by the action of the three-position five-way valve, and enabling the oil liquid to flow back to the oil return tank until the detection of a detection device at the bottom of the oil return tank reaches the standard, and stopping running;
6) when the detection result is that the oil particle size and the moisture or the gas simultaneously exceed the standard, starting the comprehensive oil filtering operation: controlling the on-way electric ball valve, the oil suction pump and the discharge pump to act, and enabling the oil liquid flowing in through the oil suction pump to flow into the vacuum tank firstly to finish water and gas filtration through the action of the three-position five-way valve, then to flow into the particle filter through the discharge pump to finish particle filtration, and to flow back to the oil return tank until the detection device at the bottom of the oil return tank reaches the standard and then to stop running;
7) when the detection result is that the oil liquid level in the oil tank of the hydraulic hoist is lower than the set minimum liquid level, starting oil supply operation: controlling the oil supply pump and the on-way electric ball valve to act, and conveying the oil in the oil purifying tank into an oil tank of the hydraulic hoist until the liquid level of the oil reaches the standard;
8) when the detection result is that oil is rotten and equipment is in the maintenance state, start the oil extraction operation: and starting the accident oil pump and the on-way electric ball valve, quickly emptying the deteriorated oil in the oil tank of the hydraulic hoist, and selecting a machine for oil supply after the maintenance personnel finish cleaning the oil tank of the hydraulic hoist and accessories immersed in the deteriorated oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210283163.XA CN114673714A (en) | 2022-03-22 | 2022-03-22 | Hydraulic oil quality online guarantee system of hydraulic hoist of hydropower station and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210283163.XA CN114673714A (en) | 2022-03-22 | 2022-03-22 | Hydraulic oil quality online guarantee system of hydraulic hoist of hydropower station and control method thereof |
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| CN114673714A true CN114673714A (en) | 2022-06-28 |
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| CN202210283163.XA Pending CN114673714A (en) | 2022-03-22 | 2022-03-22 | Hydraulic oil quality online guarantee system of hydraulic hoist of hydropower station and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
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2022
- 2022-03-22 CN CN202210283163.XA patent/CN114673714A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
| CN116104674B (en) * | 2023-02-28 | 2024-01-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
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