CN101488013B - Multi-channel industrial monitoring system for baseboard leakage of oil products storage tank - Google Patents
Multi-channel industrial monitoring system for baseboard leakage of oil products storage tank Download PDFInfo
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- CN101488013B CN101488013B CN2008100101581A CN200810010158A CN101488013B CN 101488013 B CN101488013 B CN 101488013B CN 2008100101581 A CN2008100101581 A CN 2008100101581A CN 200810010158 A CN200810010158 A CN 200810010158A CN 101488013 B CN101488013 B CN 101488013B
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- storage tank
- leakage
- control
- baseboard
- monitoring system
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 58
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000005684 electric field Effects 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 24
- 239000000047 product Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a multi-channel industrial system for monitoring the leakage of a bottom board of an oil storage tank, comprising an alarm detector and an upper monitoring computer, wherein the alarm detector is installed under the bottom board of the oil storage tank and comprises a detection circuit and a test piece connected with the detection circuit, wherein the detection circuit comprises a control and signal processing unit, a signal generating unit and a data transmission unit; and the control and signal processing unit is connected with the test piece by the signal generating unit, and is in communication connection with the upper monitoring computer by the data transmission unit, a blast-proof safety fence and a converting unit.The system has high precision and sensitivity, compact structure, high density of integration, long service life, easy installation and usage, convenient maintenance and wide range of application.
Description
Technical field
The present invention relates to a kind of equipment and be directed at the data acquisition technology of leakage, specifically a kind of multi-channel industrial monitoring system for baseboard leakage of oil products storage tank because of corrosion.
Background technology
In recent years; Along with the continuous increase of domestic and international market to the crude oil demand amount; Oil refining enterprise improves constantly the requirement of crude oil and product oil storing and transporting security; Relevant with it storage tank leak detection and leakage preventing technology have obtained widespread use; Existing crude oil processing and accumulating enterprise adopt double-deck jar bottom structure to reduce oil leak and to the pollution of environment, and relevant detection equipment are installed are detected the oil leak point, but a jar end checkout equipment exists that volume is big, complex structure, the low shortcoming of sensitivity.Therefore research a new generation jar end detection technique, the relevant leak detection sensor of exploitation are the requirements at the higher level that new period present technique field proposes the storage tank leak detection technology.
Summary of the invention
In order to overcome deficiency of the prior art, the technical matters that the present invention solves provides that a kind of measuring accuracy is high, response speed is fast, safeguard simple multi-channel industrial monitoring system for baseboard leakage of oil products storage tank.
To achieve these goals, the technical scheme of the present invention's employing is:
The present invention has alarm detector and upper monitoring computing machine; Wherein alarm detector is installed on the oil product storage tank floor below; Comprise testing circuit and the test piece that links to each other with testing circuit; Wherein testing circuit comprises control and signal processing unit, signal generating unit and data transmission unit, and control and signal processing unit link to each other with test piece through signal generating unit, carry out communication through data transmission unit, anti-explosion safety grid and converting unit and upper monitoring computing machine and are connected.
The detection signal input end of said control and signal processing unit links to each other with the output pin of signal generating unit; The input end of signal generating unit is connected to one or more test pieces through capacitance; The above-mentioned input end of signal generating unit is set up LCF simultaneously as the output terminal of electric field signal in test piece; The control signal of control and signal processing unit links to each other with the control input end of signal generating unit; The Communication Control end of control and signal processing unit is connected to the upper monitoring computing machine through photoelectricity coupled circuit and data transmission unit;
Said testing circuit also has the toggle switch that is used for confirming the address numbering, and its output terminal is connected to the digital quantity input end of control and signal processing unit; Said testing circuit also has the program download interface, and its output terminal links to each other with the test interface of control and signal processing unit, realizes online programming, debugging and download; Said alarm detector has in the housing, and it is divided into upper and lower two cavitys by intermediate plate, and testing circuit is installed in the cavities, and the test piece level is located in the lower cavity, links to each other with signal generating unit in the testing circuit through metal support; Data transmission unit in the testing circuit is connected to the anti-explosion safety grid of being located at the place of safety through the wire guide on the housing; The bottom of said housing and the side bottom of protective cover are equipped with pod apertures; Said outside also is provided with protective cover, and itself and housing relevant position are provided with the lead fairlead;
Said housing or protective cover adopt can corrosion-resistant, resistant to elevated temperaturesly gather PTFE; Said alarm detector is a plurality of, is arranged on the basis of oil product storage tank floor below; Said test piece is a copper material.
The present invention has following beneficial effect:
1. have high precision and high sensitivity.The present invention adopts electric field induction principle and combines corresponding electronic chip to form detector, can confirm the leak position and the time of oil product storage tank quickly and accurately, and precision and highly sensitive reduces economic loss and environmental pollution that oil leak brings;
2. compact conformation, integrated level are high.Alarm detector in the system of the present invention is integrated in control and signal processing unit, signal generating unit, data transmission unit and test piece in one housing, and compact conformation, volume are little, are convenient to site operation;
3. long service life.Alarm detector in the system of the present invention adopts and gathers PTFE as housing, corrosion-resistant, the resistant to elevated temperatures characteristic of tool, long service life;
4. install, use simple, easy to maintenance.The test piece of system of the present invention is reusable, and the state of after leaking medium is removed, can resuming work automatically need not regularly replace test piece, conveniently installs, uses and safeguard;
5. application is wide.System of the present invention is not only applicable to the detection of the atmospheric storage tank baseboard leakage of petrochemical industry, petroleum industry, and all have in the equipment of flow media leakage but also can be applied to other.
Description of drawings
Fig. 1,2 is electric field imaging technology measuring principle figure of the present invention (), (two);
Fig. 3 is an electrical principle block diagram of the present invention;
Fig. 4 is an electrical schematic diagram of the present invention;
Fig. 5 is a structural representation of the present invention;
The monitoring method process flow diagram (one) that Fig. 6 adopts for the present invention;
Fig. 7 is temperature detection process flow diagram (two) in the monitoring method of the present invention's employing;
Fig. 8 is that the present invention is at oil product storage tank floor below hyperchannel on-line monitoring point distribution schematic diagram;
Fig. 9 is the present invention installation aspect figure in one embodiment.
Embodiment
Like Fig. 8, shown in 9; Present embodiment adopts 26 alarm detectors, and (address number is A01～A26); Be installed in the asphaltic sands of oil product storage tank floor below; In the oil product storage tank base plate is carried out the scope of covering, evenly arrange, also can select to be arranged in the zone of the base plate correspondence that is prone to leakage by actual conditions; Each alarm detector is carried out geocoding to confirm the address numbering, carry out communication through RS485 bus process anti-explosion safety grid 12 and RS485/232 converting unit 13 with upper monitoring computing machine 14 and be connected.
Like Fig. 3, shown in 4; System of the present invention is made up of alarm detector and upper monitoring computing machine; Wherein alarm detector comprises testing circuit 6 and the test piece 5 that links to each other with testing circuit 6; Testing circuit 6 comprises control and signal processing unit U1, signal generating unit U8 and data transmission unit U7; The detection signal input end AIN0 of control and signal processing unit U1 links to each other with the output pin LEVEL of signal generating unit U8; Any one pin among input end E1～E9 of signal generating unit U8 (present embodiment is E7) is connected to 1 test piece 5 through capacitance C31, and the above-mentioned input end of signal generating unit U8 (present embodiment is E7) as the output terminal of electric field signal, is set up LCF simultaneously in test piece 5; The control signal of control and signal processing unit U1 links to each other with control input end A～D, the DIS_SHIELD of signal generating unit U8; Communication Control end RX0, TX0, the DE of control and signal processing unit U1 are connected to upper monitoring computing machine 14 through photoelectricity coupled circuit and data transmission unit U7.
Said testing circuit 6 also has the toggle switch J3 that is used for confirming the address numbering, and its output terminal is connected to digital quantity input end P1.0～P1.3, the P3.0～P3.3 of control and signal processing unit U1, to realize the geocoding to each alarm detector; Said testing circuit 6 also has program download interface J2, and its output terminal links to each other with test interface TMS, TCK, TDI, the TDO of control and signal processing unit U1, realizes online programming, debugging and program download.
Said each testing circuit 6 can connect a test piece 5; Also can be connected to a plurality of simultaneously; Programme through control input end A～D and to select sense channel, as long as its transmission range and external disturbance do not influence the quality of its detection signal signal generating unit U8.The present invention only selects an independent electrode pin, and every other electrode pin is connected on the ground wire pin through signal generating unit U8 switch inside.
As shown in Figure 5; Said alarm detector has housing 4, and it is divided into upper and lower two cavitys by intermediate plate 3, and testing circuit 6 is installed in the cavities; Test piece 5 levels are located in the lower cavity, link to each other with signal generating unit U8 in the testing circuit 6 through metal support 8; Data transmission unit U7 in the testing circuit 6 is connected to the anti-explosion safety grid 12 of being located at the place of safety through the wire guide on the housing 4; The bottom 1 of said housing 4 and the side bottom of protective cover 2 are equipped with pod apertures 9, and oily medium is got into the test piece 5 formed electric fields from pod apertures 9.
Said housing 4 outsides also are provided with protective cover 2 and do not receive foundation settlement or oil tank bottom plate tension force to cause the influence of being out of shape with the protection alarm detector, and protective cover 2 is provided with the lead fairlead with the relevant position of housing 4 wire guides.4 wire guide places are equipped with water-tight joint 7 at housing, in order to avoid it is inner to comprise that oil, water or steam get into alarm detector.Said housing 4 or protective cover 2 adopt and can corrosion-resistant, resistant to elevated temperaturesly gather PTFE.
Like Fig. 1, shown in 2; The present invention is according to electric field induction principle; Utilize electric field imaging technology to gather voltage data and transmission; Output terminal (also the being input end E7) output low frequency of the electric field signal through signal generating unit U8 sinusoidal wave (frequency can be regulated through non-essential resistance, present embodiment with frequency optimization to 125KHz, 5V
P-P), drive electrode (being test piece 5) is set up LCF, and this test piece 5 is as an electrode in the electric field, and other electrodes then utilize signal generating unit U8 switch inside to be connected on the ground wire pin and form a complete loop and realize; In the time of in the electric field that oil product entering test piece 5 forms, change pairing dc voltage value through the detection field intensity and reflect leakage situation.Sine wave has lower harmonic wave, can reduce interference.For the electric field system that is fit to, the integrated electric field image device circuit that provides support is convenient to make up twin-core sheet electric field system.The signal that system applies is an ac small signal, is output as direct current signal.
As shown in Figure 6, multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of the present invention realizes that through following steps baseboard leakage of oil products storage tank detects:
In the oil product storage tank floor below alarm detector is installed;
Power on for the baseboard leakage of oil products storage tank multi-channel industrial monitoring system and carry out initialization operation, comprise and set alarm detector address numbering that it is corresponding one by one with the installation site of alarm detector below oil product storage tank; Set the leakage alarm reference value; The setting data sampling time interval;
According to electric field induction principle, utilize electric field imaging technology to gather voltage data and transmission, promptly gather the pairing magnitude of voltage of LCF field intensity when not having oil leak; Through repeatedly gathering, behind the magnitude of voltage numerical stability, this magnitude of voltage is set at voltage reference value U
0Gather electric field feedback voltage U according to the continuation of time in SI
tAs above-mentioned voltage variety U during greater than setting value
t-U
0During＞A (A is the leakage alarm reference value), produce the baseboard leakage of oil products storage tank alerting signal by the upper monitoring computing machine, and display alarm position, record alert data and time;
Return collection site data and transmitting step, circulation detects;
When the detection system power down, testing process finishes.
When above-mentioned voltage variety was not more than setting value, forgo data did not keep a record;
Return and gather voltage variety and transmitting step, circulation is carried out;
When the pick-up unit power down, testing process finishes.
As shown in Figure 7, system of the present invention also has temperature detecting function, and concrete steps are following:
Power on for above-mentioned alarm detector and carry out initialization operation;
Collection site ambient temperature data and transmission;
When the said temperature data are in setting range, show the normal temperature data;
Return collection site ambient temperature data and transmitting step, circulation is carried out;
When the pick-up unit power down, testing process finishes;
When the said temperature data are not in setting range, display abnormality temperature data, and record alarm temperature value and time of fire alarming;
When the pick-up unit power down, testing process finishes.
It is the temperature sensor realization by being integrated among control and the signal processing unit U1 that said temperature detects, and comes reading temperature data through the RS232/485 interface programming; The purpose that temperature detection is set not only is the temperature variations of detection alarm pick-up unit site environment of living in; The more important thing is ruuning situation through temperature variations reflection alarm detector; If temperature variation is obviously undesired, can judge indirectly that then operation irregularity appears in the internal element of this alarm detector, if temperature variation exceeds setting range; Through alarm, system need shut down maintenance.
Claims (8)
1. multi-channel industrial monitoring system for baseboard leakage of oil products storage tank; It is characterized in that: have alarm detector and upper monitoring computing machine; Wherein alarm detector is installed on the oil product storage tank floor below; Comprise testing circuit (6) and the test piece (5) that links to each other with testing circuit (6); Wherein testing circuit (6) comprises control and signal processing unit (U1), signal generating unit (U8) and data transmission unit (7), and control and signal processing unit (U1) link to each other with test piece (5) through signal generating unit (U8), carry out communication through data transmission unit (U7), anti-explosion safety grid (12) and converting unit (13) with upper monitoring computing machine (14) and are connected;
The detection signal input end (AIN0) of said control and signal processing unit (U1) links to each other with the output pin (LEVEL) of signal generating unit (U8); The input end of signal generating unit (U8) is connected to one or more test pieces (5) through capacitance; The above-mentioned input end of signal generating unit (U8) is set up LCF simultaneously as the output terminal of electric field signal in test piece (5); The control signal of control and signal processing unit (U1) links to each other with the control input end (A～D, DIS_SHIELD) of signal generating unit (U8); The Communication Control end (RX0, TX0, DE) of control and signal processing unit (U1) is connected to upper monitoring computing machine (14) through photoelectricity coupled circuit and data transmission unit (U7).
2. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 1; It is characterized in that: said testing circuit (6) also has the toggle switch (J3) that is used for confirming the address numbering, and its output terminal is connected to digital quantity input end (P1.0～P1.3, P3.0～P3.3) of control and signal processing unit (U1).
3. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 1; It is characterized in that: said testing circuit (6) also has program download interface (J2); Its output terminal links to each other with the test interface (TMS, TCK, TDI, TDO) of control and signal processing unit (U1), realizes online programming, debugging and download.
4. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 1; It is characterized in that: said alarm detector has housing (4); It is divided into upper and lower two cavitys by intermediate plate (3); Testing circuit (6) is installed in the cavities, and test piece (5) level is located in the lower cavity, links to each other with signal generating unit (U8) in the testing circuit (6) through metal support (8); Data transmission unit (U7) in the testing circuit (6) is connected to the anti-explosion safety grid (12) of being located at the place of safety through the wire guide on the housing (4); The bottom (1) of said housing (4) and the side bottom of protective cover (2) are equipped with pod apertures (9).
5. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 4, it is characterized in that: said housing (4) outside also is provided with protective cover (2), and itself and housing (4) relevant position are provided with the lead fairlead.
6. by claim 4 or 5 described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank, it is characterized in that: said housing (4) or protective cover (2) adopt can corrosion-resistant, resistant to elevated temperaturesly gather PTFE.
7. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 1, it is characterized in that: said alarm detector is a plurality of, is arranged on the basis of oil product storage tank floor below.
8. by the described multi-channel industrial monitoring system for baseboard leakage of oil products storage tank of claim 1, it is characterized in that: said test piece (5) is copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100101581A CN101488013B (en) | 2008-01-18 | 2008-01-18 | Multi-channel industrial monitoring system for baseboard leakage of oil products storage tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100101581A CN101488013B (en) | 2008-01-18 | 2008-01-18 | Multi-channel industrial monitoring system for baseboard leakage of oil products storage tank |
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| Publication Number | Publication Date |
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| CN101488013A CN101488013A (en) | 2009-07-22 |
| CN101488013B true CN101488013B (en) | 2012-04-18 |
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| CN2008100101581A Expired - Fee Related CN101488013B (en) | 2008-01-18 | 2008-01-18 | Multi-channel industrial monitoring system for baseboard leakage of oil products storage tank |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489683A (en) * | 2018-02-06 | 2018-09-04 | 浙江巨化装备制造有限公司 | Tank case leakage alarm positioning system |
| CN110194335A (en) * | 2019-05-15 | 2019-09-03 | 中国石油天然气集团有限公司 | A kind of monitoring device and monitoring method of tank bottom oil leak |
| CN110261043B (en) * | 2019-05-15 | 2020-10-27 | 中国石油天然气集团有限公司 | Method for monitoring leakage of oil product at bottom of storage tank |
| CN111804248B (en) * | 2020-06-02 | 2022-03-25 | 浙江海洋大学 | Oil storage tank soil leakage monitoring technology adopting magnetic tracer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4417624C2 (en) * | 1994-05-19 | 1996-04-11 | Sicherungsgeraetebau Gmbh | Monitoring device with leak detectors working according to the overpressure principle |
| CN2283255Y (en) * | 1995-12-26 | 1998-06-03 | 兰州石油机械研究所 | Cold equipment heat transfer coefficient on line measuring instrument |
| EP1460408A1 (en) * | 2003-03-11 | 2004-09-22 | The Goodyear Tire & Rubber Company | Leak detection system and method for offshore hose lines |
-
2008
- 2008-01-18 CN CN2008100101581A patent/CN101488013B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4417624C2 (en) * | 1994-05-19 | 1996-04-11 | Sicherungsgeraetebau Gmbh | Monitoring device with leak detectors working according to the overpressure principle |
| CN2283255Y (en) * | 1995-12-26 | 1998-06-03 | 兰州石油机械研究所 | Cold equipment heat transfer coefficient on line measuring instrument |
| EP1460408A1 (en) * | 2003-03-11 | 2004-09-22 | The Goodyear Tire & Rubber Company | Leak detection system and method for offshore hose lines |
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| CN101488013A (en) | 2009-07-22 |
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