CN106502196A - 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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Publication number
CN106502196A
CN106502196A CN201611094705.XA CN201611094705A CN106502196A CN 106502196 A CN106502196 A CN 106502196A CN 201611094705 A CN201611094705 A CN 201611094705A CN 106502196 A CN106502196 A CN 106502196A
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China
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sampling
valve
tank
desalination
feed back
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CN201611094705.XA
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CN106502196B (en
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高翔
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KAITAI (CHUZHOU) FLUID CONTROL Co.,Ltd.
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高翔
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/058Safety, monitoring
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/10Plc systems
    • G05B2219/14Plc safety
    • G05B2219/14006Safety, monitoring in general

Abstract

The present invention relates to a kind of electric desalting equipment oil-water interfaces on-line monitoring and control method and system, be electric desalting equipment closed pressure resistant desalination crouch that many equation of equal altitude position thief hatch of tank draw multiple side by side, the manual sampling tube of hand stop valve and manual sampling valve is equipped with respectively, the DCS/PLC desalinations control system of electric desalting equipment carries out corresponding desalination control according to oil-water interface position in the sleeping tank of the desalination for measuring in real time, it is characterized in that the automatic sampling tube with controlling of sampling valve drawn between its hand stop valve and manual sampling valve respectively by manual sampling tube by threeway of sampling per root, multiple side by side automatically sampling tubes are prestored the closed pressure resistant buffer tank bottom of gas by collecting sampling tube UNICOM again;In the middle part of buffer tank, outside configuration connects gaseous pressure sensor higher than the liquid level detecting sensor of sampling interface tube, top is collected.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.

Description

Electric desalting equipment oil-water interfaces on-line monitoring and control method and system
Technical field
The present invention relates to wetting system cut by a kind of storage tank, more particularly to a kind of electric desalting equipment oil-water interfaces on-line monitoring and Control method and system.
Background technology
Tape splicing sampling handss are drawn respectively to the water level that may possibly be separated of multiple discrepancy in elevation of desalination storage tank in existing electric desalting apparatus The sampling tube of dynamic valve, and by manually opening the sampling hand-operated valve of multiple discrepancy in elevation sampling tubes successively, observe by the naked eye sampling tube The medium character of outflow judging the water level in desalination storage tank, so as to instruct electric desalting apparatus to carry out draining desalination.This artificial Water level method is surveyed in sampling, and not only water level detecting efficiency is low, be not suitable for altofrequency water level detecting, and inevitably discharges oil Property medium, causes unnecessary environmental pollution.
Content of the invention
Present invention aim to overcome that the drawbacks described above of prior art, there is provided one kind can carry out the efficient water level inspection of altofrequency Survey, be avoided that the electric desalting equipment oil-water interfaces on-line monitoring and control method for discharging oil medium, the object of the invention also exist again In offer system for carrying out the process.
For achieving 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 many 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 tube of sample valve, the DCS/PLC desalinations control system of electric desalting equipment is according to profit in the sleeping tank of the desalination for measuring in real time Interface location carries out corresponding desalination control, and per root, manual sampling tube passes through between its hand stop valve and manual sampling valve respectively The automatic sampling tube with controlling of sampling valve is drawn in sampling threeway, and multiple sampling tube is pre- by collecting sampling tube UNICOM again automatically side by side The closed pressure resistant buffer tank bottom of trapped air body;In the middle part of buffer tank, outside configuration is higher than the Level Detection sensing for collecting sampling interface tube Device, top connect gaseous pressure sensor;
Under automatic controller control:Complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves On the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, using automatic sampling tube that the controlling of sampling valve is located Or collect that sampling tube matches somebody with somebody after line profit detection sensor enters line delay detection to medium character in sampling tube, close this and adopt Sample controls valve;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, using returning Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and not return pipeline countercurrently, until liquid level detecting sensor detects which Feed back pump is closed when residing 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 On the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, treats that gaseous pressure sensor is detected slow When depositing the sleeping tank pressure dynamic balance of gaseous pressure and desalination in tank, using automatic sampling tube that the controlling of sampling valve is located or collect sampling Pipe match somebody with somebody after line profit detection sensor is detected to medium character in sampling tube, 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 not return pipeline countercurrently, until liquid level detecting sensor detects which Feed back pump is closed when residing buffer tank inner height is gas phase stops feed back.Connect up at the top of the buffer tank and be configured to adjust Buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.The sleeping tank thief hatch liquid level of desalination The detection of medium character is under intelligent controller control:Made in the sleeping tank of desalination using gas phase pressure reduction in the sleeping tank of desalination and buffer tank The sampled pipe flow of medium enters buffer tank, using online profit detection sensor to flowing through or stream deposits the sleeping tank of desalination which matches somebody with somebody sampling tube Interior medium character detected, and directly or according to needing to send testing result or detection judged result to DCS/PLC desalinations Control system;Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes gaseous pressure in buffer tank sleeping less than desalination Gaseous pressure in tank.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
Used as optimization, return pipeline countercurrently is not that end leads to bottom or end UNICOM in buffer tank from the top of buffer tank The feed back pipe configuration feed back pump and check (non-return) valve of buffer tank bottom, the sleeping tank of feed back tube head end connection desalination or connection highest thief hatch or Between the sampling threeway of the automatic sampling tube that highest and minimum thief hatch are drawn and controlling of sampling valve.
As optimization, connect the sampling threeway of the automatic sampling tube that highest thief hatch or highest and minimum thief hatch are drawn with Feed back tube head section between controlling of sampling valve is configured with feed back pump and opens the feed back control that closes after front opening, feed back pump are closed Valve;
When returning between the sampling threeway of the automatic sampling tube that connection highest and minimum thief hatch are drawn and controlling of sampling valve When expects pipe head section is configured with the feed back control valve that feed back pump opens cut out after front opening, feed back pump are closed, from high-order thief hatch Medium be transmitted back to highest thief hatch extraction automatic sampling tube sampling threeway and controlling of sampling valve between feed back pipe, from The medium of low level thief hatch is transmitted back between the sampling threeway of the automatic sampling tube that minimum thief hatch is drawn and controlling of sampling valve Feed back pipe.
Used as optimization, the automatic sampling tube is big in controlling of sampling valve tract concatenation two ends band end plate or blue disk, diameter In the horizontal detection pipe of pipe diameter of sampling automatically, one end end plate of the online profit detection sensor configuration in horizontal detection pipe Or Lan Panshang;
The sampling tube concatenation two ends of collecting are with end plate or blue disk, with diameter greater than the horizontal detection for collecting sampling pipe diameter Pipe, one end end plate or Lan Panshang of the online profit detection sensor configuration in horizontal detection pipe.
Used as optimization, the sampling tube that collects connects downwards tennis partner in the latter end of its Connection Cache tank by the Zhi Santong that samples The sampling arm of dynamic sampling valve;Connect up to be configured to adjust buffer tank at the top of the buffer tank and prestore the manual of gas flow Atmospheric valve or automatic controller control the blow-down pipe of atmospheric valve.It is furnished with material storage container below the sampling arm.The caching tank deck Portion connects up and is configured to adjust the prestore manual vent valve or automatic controller control atmospheric valve of gas flow of buffer tank and puts Blank pipe.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
For realizing that the system of electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method is de- in electricity The multiple of many equation of equal altitude position thief hatch extractions of the sleeping tank of the closed pressure resistant desalination of salt equipment are equipped with hand stop valve and handss side by side, respectively The manual sampling tube of dynamic sampling valve, the DCS/PLC desalinations control system of electric desalting equipment is according in the sleeping tank of the desalination for measuring in real time Oil-water interface position carries out corresponding desalination control, and per root, manual sampling tube is distinguished between its hand stop valve and manual sampling valve Automatic sampling tube with controlling of sampling valve is drawn by threeway of sampling, multiple automatic side by side sampling tubes are again by collecting sampling tube connection The closed pressure resistant buffer tank bottom of the logical gas that prestores;In the middle part of buffer tank, outside configuration is higher than the Level Detection for collecting sampling interface tube Sensor, top connect gaseous pressure sensor;
Under automatic controller control:Complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves On the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, using automatic sampling tube that the controlling of sampling valve is located Or collect that sampling tube matches somebody with somebody after line profit detection sensor enters line delay detection to medium character in sampling tube, close this and adopt Sample controls valve;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, using returning Medium in buffer tank is transmitted back to the sleeping tank of desalination by material pump and not return pipeline countercurrently, until liquid level detecting sensor detects which Feed back pump is closed when residing 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 On the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, treats that gaseous pressure sensor is detected slow When depositing the sleeping tank pressure dynamic balance of gaseous pressure and desalination in tank, using automatic sampling tube that the controlling of sampling valve is located or collect sampling Pipe match somebody with somebody after line profit detection sensor is detected to medium character in sampling tube, 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 not return pipeline countercurrently, until liquid level detecting sensor detects which Feed back pump is closed when residing buffer tank inner height is gas phase stops feed back.Connect up at the top of the buffer tank and be configured to adjust Buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.The sleeping tank thief hatch liquid level of desalination The detection of medium character is under intelligent controller control:Made in the sleeping tank of desalination using gas phase pressure reduction in the sleeping tank of desalination and buffer tank The sampled pipe flow of medium enters buffer tank, using online profit detection sensor to flowing through or stream deposits the sleeping tank of desalination which matches somebody with somebody sampling tube Interior medium character detected, and directly or according to needing to send testing result or detection judged result to DCS/PLC desalinations Control system;Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes gaseous pressure in buffer tank sleeping less than desalination Gaseous pressure in tank.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
Used as optimization, return pipeline countercurrently is not that end leads to bottom or end UNICOM in buffer tank from the top of buffer tank The feed back pipe configuration feed back pump and check (non-return) valve of buffer tank bottom, the sleeping tank of feed back tube head end connection desalination or connection highest thief hatch or Between the sampling threeway of the automatic sampling tube that highest and minimum thief hatch are drawn and controlling of sampling valve.
As optimization, connect the sampling threeway of the automatic sampling tube that highest thief hatch or highest and minimum thief hatch are drawn with Feed back tube head section between controlling of sampling valve is configured with feed back pump and opens the feed back control that closes after front opening, feed back pump are closed Valve;
When returning between the sampling threeway of the automatic sampling tube that connection highest and minimum thief hatch are drawn and controlling of sampling valve When expects pipe head section is configured with the feed back control valve that feed back pump opens cut out after front opening, feed back pump are closed, from high-order thief hatch Medium be transmitted back to highest thief hatch extraction automatic sampling tube sampling threeway and controlling of sampling valve between feed back pipe, from The medium of low level thief hatch is transmitted back between the sampling threeway of the automatic sampling tube that minimum thief hatch is drawn and controlling of sampling valve Feed back pipe.
Used as optimization, the automatic sampling tube is big in controlling of sampling valve tract concatenation two ends band end plate or blue disk, diameter In the horizontal detection pipe of pipe diameter of sampling automatically, one end end plate of the online profit detection sensor configuration in horizontal detection pipe Or Lan Panshang;
The sampling tube concatenation two ends of collecting are with end plate or blue disk, with diameter greater than the horizontal detection for collecting sampling pipe diameter Pipe, one end end plate or Lan Panshang of the online profit detection sensor configuration in horizontal detection pipe.
Used as optimization, the sampling tube that collects connects downwards tennis partner in the latter end of its Connection Cache tank by the Zhi Santong that samples The sampling arm of dynamic sampling valve;Connect up to be configured to adjust buffer tank at the top of the buffer tank and prestore the manual of gas flow Atmospheric valve or automatic controller control the blow-down pipe of atmospheric valve.It is furnished with material storage container below the sampling arm.The caching tank deck Portion connects up and is configured to adjust the prestore manual vent valve or automatic controller control atmospheric valve of gas flow of buffer tank and puts Blank pipe.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control:Eased up using the sleeping tank of desalination Depositing gas phase pressure reduction in tank makes the sampled pipe flow of medium in the sleeping tank of desalination enter buffer tank, using online profit detection sensor to flowing through Or stream is deposited medium character in the sleeping tank of desalination which matches somebody with somebody sampling tube and is detected, and directly or according to needing testing result or detection Judged result sends DCS/PLC desalination control systems to;Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay Deposit gaseous pressure in tank and be less than gaseous pressure in the sleeping tank of desalination.With the efficient water level detecting of altofrequency can be carried out, the row of being avoided that again Go out the advantage 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 On 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 tube configuration Sample controls valve, makes medium sampled pipe flow under the sleeping pressure inside the tank of desalination in the sleeping tank of desalination enter buffer tank to gaseous pressure sensor When detecting the sleeping pressure inside the tank of gaseous pressure and desalination in surge tank and balancing, passed using the online profit detection of sampling tube configuration Sensor to flowing through or stream is deposited the medium character of the sampling tube and detected, and directly or according to needing to sentence testing result or detection Disconnected result sends DCS/PLC desalination control systems to;When in the buffer tank that gaseous pressure sensor is detected gaseous pressure with de- When the sleeping pressure inside the tank of salt is balanced, close the controlling of sampling valve and opening feed back control valve and feed back pump and be situated between to desalination sleeping tank loopback Matter, until tank can't detect liquid medium with liquid level detecting sensor, closes feed back pump and feed back control valve.
After the controlling of sampling valve that the thief hatch draws sampling tube configuration is opened, medium is made in the sleeping tank of desalination in the sleeping tank of desalination Under interior pressure, sampled pipe flow enters buffer tank to gaseous pressure sensor and detects in the sleeping tank of gaseous pressure and desalination in surge tank During pressure balance, line profit detection sensor first detect close after medium in sampling tube the controlling of sampling valve or first close should Controlling of sampling valve detects medium in sampling tube after line profit detection sensor, then opens feed back control valve and feed back pump to desalination Sleeping tank loopback medium, until tank can't detect liquid medium with liquid level detecting sensor, closes feed back pump and feed back control valve.
The detection of the sleeping tank oil-water interface of desalination is under intelligent controller control, detects successively from high to low or from low to high The medium character of the desalination each thief hatch liquid level of sleeping tank:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined at highest thief hatch, and transmit to DCS/PLC desalinations control system;If detect two high When the medium of low phase neighbour's thief hatch liquid level is respectively oil and water, then judge that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmit to DCS/PLC desalinations control system;
When detecting from low to high, if the medium for detecting lowest order thief hatch liquid level is oil, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined below minimum thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then judge the sleeping tank oil-water interface of desalination at this by intelligent controller At low thief hatch, and transmit to DCS/PLC desalinations control system.
The tank is configured in the middle and lower part side of buffer tank with liquid level detecting sensor, and the sampling interface tube that collects is less than Liquid level detecting sensor matched somebody with somebody by the tank of buffer tank.The sampling interface tube that collects is passed with Level Detection to the distance at buffer tank bottom for tank Sensor to buffer tank bottom distance 1/2 or so.
The feed back pump is packed in above buffer tank.Draw and be connected to the dirt for leading to sewage-treatment plant in the desalination tank bottoms face of crouching Water delivery pipe and draw and be connected to medium input pipe, the sewage outlet tube and medium input pipe DCS/PLC that is each configured with being electrically connected takes off The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch are centrally located in same plane, and The plane and the sleeping tank axis oblique of desalination.
The sleeping pot bottom of the desalination is respectively by the feed pipe UNICOM high position storage tank with inlet control valve and by with dirt The blow-off pipe UNICOM sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination controls System processed.When detecting that oil-water interface is higher than setting high-order in the sleeping tank of desalination, DCS/PLC desalination control systems turn on sewage To sewage in the sleeping tank of sewage-treatment plant discharge desalination, oil-water interface reaches setting low level to exhaust-control valve in the sleeping tank of desalination When, DCS/PLC desalination control systems are shut off sewage discharge control valve, stop sewer;When needing to feed, DCS/PLC desalinations Control system opens inlet control valve charging.
The inventive method and system are:Intelligent controller can will be serially connected in the sleeping tank manual detection pipe of desalination with threeway form Online profit detection sensor real-time Transmission on line returns the DCS/PLC desalination control systems of control room so that DCS/PLC desalinations Control system carries out corresponding technological process according to this data.Gas phase pressure of the intelligent controller real-time monitoring on buffer tank Force transducer, when the pressure in buffer tank is close to the sleeping pressure inside the tank of desalination, intelligent controller will start feed back pump, by buffer tank In the medium loopback sleeping tank of salt back off.Intelligent controller is made entirely installed in the controlling of sampling valve on automatic sampling tube by control System can be operated in continuous sampling state.Intelligent controller can control to monitor the online profit detection sensor institute of many sets simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control:All adopt in all hand stop valve standard-sized sheets and manually On the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium in the sleeping tank of desalination is first made by sampling Pipe is pressed into the buffer tank of the gas that prestores to the sleeping tank pressure dynamic balance of caching pressure tank and desalination, then by concatenating with the controlling of sampling valve Online profit detection sensor detect medium character in the controlling of sampling valve place sampling tube, the medium character for measuring It is exactly that the sampling tube draws medium character in the sleeping tank of desalination of the thief hatch position for connecing;When highest order thief hatch medium is measured it is During water, or other height thief hatch media be water and more high-order thief hatch for oil when, intelligent controller above-mentioned medium is just Transmit to DCS/PLC desalinations control system as real-time oil-water interfaces information the thief hatch position of water.
The controlling of sampling valve on the sampling tube of UNICOM's highest order thief hatch is opened, the medium in the sleeping tank of desalination is adopted by this The sampling tube that sample control valve is matched somebody with somebody is pressed into the buffer tank of the gas that prestores, the online profit detection sensor pair that the controlling of sampling valve string is matched somebody with somebody Medium character in the sampling tube is detected, and gives the DCS/PLC desalinations high-order for the thief hatch signal transmission for water Control system.
The online profit detection sensor that the controlling of sampling valve string is matched somebody with somebody is detected to the medium character in the sampling tube;And Testing result is transferred to the DCS/PLC desalinations control system, and repeats aforementioned correlation step.
After using above-mentioned technical proposal, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system have Having to carry out altofrequency water level detecting, be avoided that discharge oiliness is situated between again, the advantage of environment-friendly high-efficiency.
Description of the drawings
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 on-line monitoring of the present invention and control method are de- in electricity The multiple of many equation of equal altitude position thief hatch extractions of the sleeping tank of the closed pressure resistant desalination of salt equipment are equipped with hand stop valve and handss side by side, respectively The manual sampling tube of dynamic sampling valve, the DCS/PLC desalinations control system of electric desalting equipment is according in the sleeping tank of the desalination for measuring in real time Oil-water interface position carries out corresponding desalination control, and per root, manual sampling tube is distinguished between its hand stop valve and manual sampling valve Automatic sampling tube with controlling of sampling valve is drawn by threeway of sampling, multiple automatic side by side sampling tubes are again by collecting sampling tube connection The closed pressure resistant buffer tank bottom of the logical gas that prestores;In the middle part of buffer tank, outside configuration is higher than the Level Detection for collecting sampling interface tube Sensor, top connect gaseous pressure sensor;
Under automatic controller control:Complete in all hand stop valve standard-sized sheets and all manual sampling valves and all control valves On the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, using automatic sampling tube that the controlling of sampling valve is located (or collecting sampling tube) match somebody with somebody line profit detection sensor medium character in sampling tube is entered line delay detection after, close should Controlling of sampling valve;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and not return pipeline countercurrently, until liquid level detecting sensor is detected Feed back pump is closed when buffer tank inner height residing for which 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 On the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, treats that gaseous pressure sensor is detected slow When depositing the sleeping tank pressure dynamic balance of gaseous pressure and desalination in tank, (or collect and adopt using automatic sampling tube that the controlling of sampling valve is located Sample pipe) match somebody with somebody after line profit detection sensor is detected to medium character in sampling tube, close the controlling of sampling valve;Utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and not return pipeline countercurrently, until liquid level detecting sensor is detected Feed back pump is closed when buffer tank inner height residing for which is gas phase stops feed back.Connect up at the top of the buffer tank and be configured to adjust Section buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.
Specifically:Return pipeline countercurrently is not that bottom is led in buffer tank from the top of buffer tank in end or end UNICOM is slow Deposit the feed back pipe configuration feed back pump and check (non-return) valve of tank bottom, the sleeping tank of feed back tube head end connection desalination or connection highest thief hatch (or Highest and minimum thief hatch) draw between the sampling threeway of automatic sampling tube and controlling of sampling valve.
More specifically:The sampling threeway of the automatic sampling tube that connection highest thief hatch (or highest and minimum thief hatch) is drawn The feed back control that feed back pump opens cut out after front opening, feed back pump are closed is configured with the feed back tube head section between controlling of sampling valve Valve;
Specifically:The automatic sampling tube controlling of sampling valve tract concatenation two ends band end plate or blue disk, with diameter greater than Automatically the horizontal detection pipe of sampling pipe diameter, the online profit detection sensor configuration horizontal detection pipe one end end plate or On blue disk.
Specifically:The latter end for collecting sampling tube in its Connection Cache tank is by Zhi Santong connections downwards of sampling with manually The sampling arm of sampling valve;Connect up at the top of the buffer tank and be configured to adjust buffer tank and prestore the putting manually of gas flow Empty valve or automatic controller control the blow-down pipe of atmospheric valve.It is furnished with material storage container below the sampling arm.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control:Eased up using the sleeping tank of desalination Depositing gas phase pressure reduction in tank makes the sampled pipe flow of medium in the sleeping tank of desalination enter buffer tank, using online profit detection sensor to flowing through Or stream is deposited medium character in the sleeping tank of desalination which matches somebody with somebody sampling tube and is detected, and directly or according to needing testing result or detection Judged result sends DCS/PLC desalination control systems to;Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay Deposit gaseous pressure in tank and be less than gaseous pressure in the sleeping tank of desalination.With the efficient water level detecting of altofrequency can be carried out, the row of being avoided that again Go out the advantage 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 On 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 tube configuration Sample controls valve, makes medium sampled pipe flow under the sleeping pressure inside the tank of desalination in the sleeping tank of desalination enter buffer tank to gaseous pressure sensor When detecting the sleeping pressure inside the tank of gaseous pressure and desalination in surge tank and balancing, passed using the online profit detection of sampling tube configuration Sensor to flowing through or stream is deposited the medium character of the sampling tube and detected, and directly or according to needing to sentence testing result or detection Disconnected result sends DCS/PLC desalination control systems to;When in the buffer tank that gaseous pressure sensor is detected gaseous pressure with de- When the sleeping pressure inside the tank of salt is balanced, close the controlling of sampling valve and opening feed back control valve and feed back pump and be situated between to desalination sleeping tank loopback Matter, until tank can't detect liquid medium with liquid level detecting sensor, closes feed back pump and feed back control valve.
After the controlling of sampling valve that the thief hatch draws sampling tube configuration is opened, medium is made in the sleeping tank of desalination in the sleeping tank of desalination Under interior pressure, sampled pipe flow enters buffer tank to gaseous pressure sensor and detects in the sleeping tank of gaseous pressure and desalination in surge tank During pressure balance, line profit detection sensor first detect close after medium in sampling tube the controlling of sampling valve or first close should Controlling of sampling valve detects medium in sampling tube after line profit detection sensor, then opens feed back control valve and feed back pump to desalination Sleeping tank loopback medium, until tank can't detect liquid medium with liquid level detecting sensor, closes feed back pump and feed back control valve.
The detection of the sleeping tank oil-water interface of desalination is under intelligent controller control, detects successively from high to low or from low to high The medium character of the desalination each thief hatch liquid level of sleeping tank:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined at highest thief hatch, and transmit to DCS/PLC desalinations control system;If detect two high When the medium of low phase neighbour's thief hatch liquid level is respectively oil and water, then judge that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmit to DCS/PLC desalinations control system;
When detecting from low to high, if the medium for detecting lowest order thief hatch liquid level is oil, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined below minimum thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then judge the sleeping tank oil-water interface of desalination at this by intelligent controller At low thief hatch, and transmit to DCS/PLC desalinations control system.
The tank is configured in the middle and lower part side of buffer tank with liquid level detecting sensor, and the sampling interface tube that collects is less than Liquid level detecting sensor matched somebody with somebody by the tank of buffer tank.The sampling interface tube that collects is passed with Level Detection to the distance at buffer tank bottom for tank Sensor to buffer tank bottom distance 1/2 or so.
The feed back pump is packed in above buffer tank.Draw and be connected to the dirt for leading to sewage-treatment plant in the desalination tank bottoms face of crouching Water delivery pipe and draw and be connected to medium input pipe, the sewage outlet tube and medium input pipe DCS/PLC that is each configured with being electrically connected takes off The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch are centrally located in same plane, and The plane and the sleeping tank axis oblique of desalination.
The sleeping pot bottom of the desalination is respectively by the feed pipe UNICOM high position storage tank with inlet control valve and by with dirt The blow-off pipe UNICOM sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination controls System processed.When detecting that oil-water interface is higher than setting high-order in the sleeping tank of desalination, DCS/PLC desalination control systems turn on sewage To sewage in the sleeping tank of sewage-treatment plant discharge desalination, oil-water interface reaches setting low level to exhaust-control valve in the sleeping tank of desalination When, DCS/PLC desalination control systems are shut off sewage discharge control valve, stop sewer;When needing to feed, DCS/PLC desalinations Control system opens inlet control valve charging.
The inventive method is:Intelligent controller will can be serially connected on the sleeping tank manual detection pipeline of desalination with threeway form Online profit detection sensor real-time Transmission returns the DCS/PLC desalination control systems of control room so that DCS/PLC desalinations control system System carries out corresponding technological process according to this data.Gaseous pressure sensing of the intelligent controller real-time monitoring on buffer tank Device, when the pressure in buffer tank is close to the sleeping pressure inside the tank of desalination, intelligent controller will start feed back pump, by Jie in buffer tank The matter loopback sleeping tank of salt back off.Controlling of sampling valve of the intelligent controller by control on the automatic sampling tube makes the whole system can To be operated in continuous sampling state.Intelligent controller can control to monitor adopting for many online profit detection sensor places of set simultaneously Sample detection line.
Oil-water interface detection method is under intelligent controller control:All adopt in all hand stop valve standard-sized sheets and manually On the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium in the sleeping tank of desalination is first made by sampling Pipe is pressed into the buffer tank of the gas that prestores to the sleeping tank pressure dynamic balance of caching pressure tank and desalination, then by concatenating with the controlling of sampling valve Online profit detection sensor detect medium character in the controlling of sampling valve place sampling tube, the medium character for measuring It is exactly that the sampling tube draws medium character in the sleeping tank of desalination of the thief hatch position for connecing;When highest order thief hatch medium is measured it is During water, or other height thief hatch media be water and more high-order thief hatch for oil when, intelligent controller above-mentioned medium is just Transmit to DCS/PLC desalinations control system as real-time oil-water interfaces information the thief hatch position of water.
The controlling of sampling valve on the sampling tube of UNICOM's highest order thief hatch is opened, the medium in the sleeping tank of desalination is adopted by this The sampling tube that sample control valve is matched somebody with somebody is pressed into the buffer tank of the gas that prestores, the online profit detection sensor pair that the controlling of sampling valve string is matched somebody with somebody Medium character in the sampling tube is detected, and gives the DCS/PLC desalinations high-order for the thief hatch signal transmission for water Control system.
The online profit detection sensor that the controlling of sampling valve string is matched somebody with somebody is detected to the medium character in the sampling tube;And Testing result is transferred to the DCS/PLC desalinations control system, and repeats aforementioned correlation step.
After using above-mentioned technical proposal, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method are with can enter Row altofrequency water level detecting, is avoided that discharge oiliness is situated between, the advantage of environment-friendly high-efficiency again.
For realizing that the system of electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method is de- in electricity The multiple of sleeping tank equation of equal altitude more than the 1 position thief hatch extraction of the closed pressure resistant desalination of salt equipment are equipped with hand stop valve Vh1 side by side, respectively With the manual sampling tube 21 of manual sampling valve Vh2, the DCS/PLC desalinations control system of electric desalting equipment is according to taking off for measuring in real time In the sleeping tank 1 of salt, oil-water interface position carries out corresponding desalination control, and per root, manual sampling tube 21 is in its hand stop valve Vh1 and manually Pass through automatic sampling tube 22 of the extraction of threeway 31 with controlling of sampling valve V1 of sampling between sampling valve Vh2 respectively, multiple automatic side by side Sampling tube 22 is prestored 6 bottom of closed pressure resistant buffer tank of gas by collecting 23 UNICOM of sampling tube again;In the middle part of buffer tank 6, outside is matched somebody with somebody Put is higher than to collect the liquid level detecting sensor T2 of 23 interface of sampling tube, top to connect gaseous pressure sensor P;
In the case where automatic controller 7 is controlled:In all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and all On the premise of control valve is fully closed, opening a controlling of sampling valve V1 makes medium flow to buffer tank 6, using controlling of sampling valve V1 institutes Online profit detection sensor T1 that matches somebody with somebody in automatic sampling tube 22 (or collecting sampling tube) is carried out to medium character in sampling tube After time delay detection, controlling of sampling valve V1 is closed;Treat in buffer tank 6 that gaseous pressure sensor P is detected gaseous pressure with de- During sleeping 1 pressure balance of tank of salt, medium in buffer tank is transmitted back to desalination using feed back pump PU and not return pipeline countercurrently and is crouched tank 1, feed back pump PU stopping feed backs being closed when 6 inner height of buffer tank residing for which is gas phase until liquid level detecting sensor T2 is detected;
Or in the case where automatic controller 7 is controlled:In all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and On the premise of all control valves are fully closed, opening a controlling of sampling valve V1 makes medium flow into buffer tank 6, treats gaseous pressure sensor In the buffer tank 6 that device P is detected during sleeping 1 pressure balance of tank of gaseous pressure and desalination, it is located automatically using controlling of sampling valve V1 Sampling tube 22 (or collecting sampling tube) match somebody with somebody after line profit detection sensor T1 is detected to medium character in sampling tube, Close controlling of sampling valve V1;Medium in buffer tank 6 is transmitted back to desalination using feed back pump PU and not return pipeline countercurrently to crouch Tank 1, stops back until liquid level detecting sensor T2 detects closing feed back pump PU when 6 inner height of buffer tank residing for which is gas phase Material.Connect 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 Controller control atmospheric valve) blow-down pipe 28.
Specifically:Not return pipeline countercurrently be end lead to from the top of buffer tank 6 bottom in buffer tank 6 (or end connection Logical buffer tank bottom) the configuration feed back pump PU and check (non-return) valve CV of feed back pipe 24,24 head end of feed back pipe connection highest thief hatch is (or most High and minimum thief hatch) draw between the sampling threeway 31 of automatic sampling tube 22 and controlling of sampling valve V1 (or connection desalination is crouched Tank).
More specifically:The sampling threeway 31 of automatic sampling tube is drawn in connection highest thief hatch (or highest and minimum thief hatch) Feed back pump PU is configured with 24 head section of feed back pipe between controlling of sampling valve V1 and opens closing after front opening, feed back pump PU are closed Feed back controls valve V2.
Specifically:The automatic sampling tube 22 is in controlling of sampling valve V1 tracts concatenation two ends band end plate or blue disk, diameter More than the horizontal detection pipe 40 of pipe diameter of sampling automatically, online profit detection sensor T1 is configured in horizontal detection pipe 40 One end end plate or Lan Panshang.
Specifically:The sampling tube 23 that collects is matched somebody with somebody by the downward connections of the Zhi Santong that samples in the latter end of its Connection Cache tank 6 The sampling arm 25 of valve Vh3 is propped up in sampling manually;Connect up at the top of the buffer tank 6 and be configured to adjust 6 pre- trapped air of buffer tank The blow-down pipe 28 of the manual vent valve V8 (or automatic controller control atmospheric valve) of the scale of construction.It is furnished with storage below the sampling arm 25 Material pond 8.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
The detection of desalination 1 thief hatch liquid level medium character of sleeping tank is in the case where intelligent controller 7 is controlled:Using the sleeping tank 1 of desalination The sampled pipe flow of medium in the sleeping tank 1 of desalination is made to enter buffer tank 6 with gas phase pressure reduction in buffer tank 6, using online profit detection sensing Device T1 to flowing through or stream is deposited medium character in the sleeping tank 1 of desalination which matches somebody with somebody sampling tube and detected, and directly or according to need will inspection Survey result or detection judged result sends DCS/PLC desalination control systems to;Medium in buffer tank 6 is conveyed using feed back pump PU The sleeping tank 1 of salt, makes gaseous pressure in buffer tank 6 be less than gaseous pressure in the sleeping tank 1 of desalination back off.With altofrequency High-efficient Water can be carried out Position detection, is avoided that the advantage for discharging oil medium again.
The detection of sleeping certain the thief hatch liquid level medium character of tank 1 of desalination is in the case where intelligent controller 7 is controlled:At all manual sections On the premise of only valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and all control valves are fully closed, open the thief hatch and draw sampling tube The controlling of sampling valve V1 of configuration, make medium sampled pipe flow under pressure in the sleeping tank 1 of desalination in the sleeping tank 1 of desalination enter buffer tank 6 to Gaseous pressure sensor detect P gaseous pressure and desalination to surge tank 6 in crouch pressure balance in tank 1 when, matched somebody with somebody using the sampling tube Online profit detection sensor T1 that puts to flowing through or stream is deposited the medium character of the sampling tube and detected, and directly or according to needing Send testing result or detection judged result to DCS/PLC desalination control systems;When gaseous pressure sensor P is detected When gaseous pressure is balanced with the sleeping pressure inside the tank of desalination in buffer tank 6, close controlling of sampling valve V1 and open feed back control valve V2 With feed back pump PU to desalination 1 loopback medium of sleeping tank, until liquid level detecting sensor T2 can't detect liquid medium, feed back pump is closed PU and feed back control valve V2.
After the controlling of sampling valve V1 that the thief hatch draws sampling tube configuration is opened, medium is made in the sleeping tank 1 of desalination in desalination In sleeping tank 1 under pressure sampled pipe flow enter buffer tank 6 to gaseous pressure sensor P detect in surge tank 1 gaseous pressure with de- In the sleeping tank 1 of salt during pressure balance, first detect in line profit detection sensor T1 and close after medium in sampling tube the controlling of sampling valve V1 first closes controlling of sampling valve V1 and detects medium in sampling tube after line profit detection sensor T1, then opens feed back control Valve V2 processed and feed back pump PU, is closed to desalination 1 loopback medium of sleeping tank until liquid level detecting sensor T2 can't detect liquid medium Feed back pump PU and feed back control valve V2.
The detection of desalination 1 oil-water interface of sleeping tank is in the case where intelligent controller 7 is controlled, and examines successively from high to low or from low to high Survey the medium character of desalination 1 each thief hatch liquid level of sleeping tank:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller 7 Sleeping 1 oil-water interface of tank of desalination is determined at highest thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then judge that sleeping 1 oil-water interface of tank of desalination exists by intelligent controller 7 At the low thief hatch, and transmit to DCS/PLC desalinations control system;
When detecting from low to high, if the medium for detecting lowest order thief hatch liquid level is oil, sentenced by intelligent controller 7 Sleeping 1 oil-water interface of tank of desalination is determined below minimum thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of individual height neighbouring sample oral fluid position is respectively oil and water, then desalination 1 oil-water interface of sleeping tank is judged by intelligent controller 7 At the low thief hatch, and transmit to DCS/PLC desalinations control system.
The liquid level detecting sensor T2 is configured in the middle and lower part side of buffer tank 6, and described to collect 23 interface of sampling tube low Liquid level detecting sensor T2 in buffer tank 6.23 interface of sampling tube that collects is passed to the distance at 6 bottom of buffer tank for Level Detection 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 is drawn to be connected to and leads to sewage-treatment plant Sewage outlet tube 26 and draw and be connected to medium input pipe 27, the sewage outlet tube 26 and medium input pipe 27 are each configured with electricity Connect the sewage output control valve V3 and medium input control valve V4 of DCS/PLC desalination control systems.Multiple thief hatch are centrally located at In same plane, and the plane and desalination 1 axis oblique of sleeping tank.
The sleeping pot bottom of the desalination is respectively by the feed pipe UNICOM high position storage tank with inlet control valve and by with dirt The blow-off pipe UNICOM sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination controls System processed.When detecting that oil-water interface is higher than setting high-order in the sleeping tank of desalination, DCS/PLC desalination control systems turn on sewage To sewage in the sleeping tank of sewage-treatment plant discharge desalination, oil-water interface reaches setting low level to exhaust-control valve in the sleeping tank of desalination When, DCS/PLC desalination control systems are shut off sewage discharge control valve, stop sewer;When needing to feed, DCS/PLC desalinations Control system opens inlet control valve charging.
The inventive method and system are:Intelligent controller can will be serially connected in the sleeping tank manual detection pipe of desalination with threeway form Online profit detection sensor real-time Transmission on line returns the DCS/PLC desalination control systems of control room so that DCS/PLC desalinations Control system carries out corresponding technological process according to this data.Gas phase pressure of the intelligent controller real-time monitoring on buffer tank Force transducer, when the pressure in buffer tank is close to the sleeping pressure inside the tank of desalination, intelligent controller will start feed back pump, by buffer tank In the medium loopback sleeping tank of salt back off.Intelligent controller is made entirely installed in the controlling of sampling valve on automatic sampling tube by control System can be operated in continuous sampling state.Intelligent controller can control to monitor the online profit detection sensor institute of many sets simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control:All adopt in all hand stop valve standard-sized sheets and manually On the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium in the sleeping tank of desalination is first made by sampling Pipe is pressed into the buffer tank of the gas that prestores to the sleeping tank pressure dynamic balance of caching pressure tank and desalination, then by concatenating with the controlling of sampling valve Online profit detection sensor detect medium character in the controlling of sampling valve place sampling tube, the medium character for measuring It is exactly that the sampling tube draws medium character in the sleeping tank of desalination of the thief hatch position for connecing;When highest order thief hatch medium is measured it is During water, or other height thief hatch media be water and more high-order thief hatch for oil when, intelligent controller above-mentioned medium is just Transmit to DCS/PLC desalinations control system as real-time oil-water interfaces information the thief hatch position of water.
The controlling of sampling valve on the sampling tube of UNICOM's highest order thief hatch is opened, the medium in the sleeping tank of desalination is adopted by this The sampling tube that sample control valve is matched somebody with somebody is pressed into the buffer tank of the gas that prestores, the online profit detection sensor pair that the controlling of sampling valve string is matched somebody with somebody Medium character in the sampling tube is detected, and gives the DCS/PLC desalinations high-order for the thief hatch signal transmission for water Control system.
The online profit detection sensor that the controlling of sampling valve string is matched somebody with somebody is detected to the medium character in the sampling tube;And Testing result is transferred to the DCS/PLC desalinations control system, and repeats aforementioned correlation step.
Embodiment two, as shown in Fig. 2 electric desalting equipment oil-water interfaces on-line monitoring of the present invention 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 On the premise of closing, opening a controlling of sampling valve makes medium flow to buffer tank, is located using the controlling of sampling valve and collects sampling tube Pipe (or automatically sample) match somebody with somebody after line profit detection sensor enters line delay detection to medium character in sampling tube, closing should Controlling of sampling valve;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and not return pipeline countercurrently, until liquid level detecting sensor is detected Feed back pump is closed when buffer tank inner height residing for which 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 On the premise of valve is fully closed, opening a controlling of sampling valve makes medium flow into buffer tank, treats that gaseous pressure sensor is detected slow When depositing the sleeping tank pressure dynamic balance of gaseous pressure and desalination in tank, it is located using the controlling of sampling valve and collects sampling tube and (or adopt automatically Sample pipe) match somebody with somebody after line profit detection sensor is detected to medium character in sampling tube, close the controlling of sampling valve;Utilize Medium in buffer tank is transmitted back to the sleeping tank of desalination by feed back pump and not return pipeline countercurrently, until liquid level detecting sensor is detected Feed back pump is closed when buffer tank inner height residing for which is gas phase stops feed back.Connect up at the top of the buffer tank and be configured to adjust Section buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.
Specifically:Return pipeline countercurrently is not that bottom is led in buffer tank from the top of buffer tank in end or end UNICOM is slow Deposit the feed back pipe configuration feed back pump and check (non-return) valve of tank bottom, feed back tube head end connection highest and minimum thief hatch (or highest sampling Mouthful) draw (or the sleeping tank of connection desalination) between the sampling threeway of automatic sampling tube and controlling of sampling valve.
More specifically:The sampling threeway of the automatic sampling tube that connection highest and minimum thief hatch (or highest thief hatch) are drawn The feed back control that feed back pump opens cut out after front opening, feed back pump are closed is configured with the feed back tube head section between controlling of sampling valve Valve;
The sampling threeway and sampling of the automatic sampling tube of highest thief hatch extraction is transmitted back to from the medium of high-order thief hatch Feed back pipe between control valve, from the sampling that the medium of low level thief hatch is transmitted back to the automatic sampling tube that minimum thief hatch is drawn Feed back pipe between threeway and controlling of sampling valve.
Specifically:The sampling tube concatenation two ends of collecting are with end plate or blue disk, with diameter greater than the horizontal stroke for collecting sampling pipe diameter To detection pipe, one end end plate or Lan Panshang of the online profit detection sensor configuration in horizontal detection pipe.
Specifically:Connect up at the top of the buffer tank and be configured to adjust buffer tank and prestore the manual vent valve of gas flow Or automatic controller controls the blow-down pipe of atmospheric valve;The latter end for collecting sampling tube in its Connection Cache tank is by sampling three Lead to sampling arm of the lower connection with sampling valve manually.It is furnished with material storage container below the sampling arm.
The detection of the sleeping tank thief hatch liquid level medium character of desalination is under intelligent controller control:Eased up using the sleeping tank of desalination Depositing gas phase pressure reduction in tank makes the sampled pipe flow of medium in the sleeping tank of desalination enter buffer tank, using online profit detection sensor to flowing through Or stream is deposited medium character in the sleeping tank of desalination which matches somebody with somebody sampling tube and is detected, and directly or according to needing testing result or detection Judged result sends DCS/PLC desalination control systems to;Medium in buffer tank is transmitted back to the sleeping tank of desalination using feed back pump, makes to delay Deposit gaseous pressure in tank and be less than gaseous pressure in the sleeping tank of desalination.With the efficient water level detecting of altofrequency can be carried out, the row of being avoided that again Go out the advantage 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 On 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 tube configuration Sample controls valve, makes medium sampled pipe flow under the sleeping pressure inside the tank of desalination in the sleeping tank of desalination enter buffer tank to gaseous pressure sensor When detecting the sleeping pressure inside the tank of gaseous pressure and desalination in surge tank and balancing, passed using the online profit detection of sampling tube configuration Sensor to flowing through or stream is deposited the medium character of the sampling tube and detected, and directly or according to needing to sentence testing result or detection Disconnected result sends DCS/PLC desalination control systems to;When in the buffer tank that gaseous pressure sensor is detected gaseous pressure with de- When the sleeping pressure inside the tank of salt is balanced, close the controlling of sampling valve and opening feed back control valve and feed back pump and be situated between to desalination sleeping tank loopback Matter, until liquid level detecting sensor can't detect liquid medium, closes feed back pump and feed back control valve.
After the controlling of sampling valve that the thief hatch draws sampling tube configuration is opened, medium is made in the sleeping tank of desalination in the sleeping tank of desalination Under interior pressure, sampled pipe flow enters buffer tank to gaseous pressure sensor and detects in the sleeping tank of gaseous pressure and desalination in surge tank During pressure balance, line profit detection sensor first detect close after medium in sampling tube the controlling of sampling valve or first close should Controlling of sampling valve detects medium in sampling tube after line profit detection sensor, then opens feed back control valve and feed back pump to desalination Sleeping tank loopback medium, until liquid level detecting sensor can't detect liquid medium, closes feed back pump and feed back control valve.
The detection of the sleeping tank oil-water interface of desalination is under intelligent controller control, detects successively from high to low or from low to high The medium character of the desalination each thief hatch liquid level of sleeping tank:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined at highest thief hatch, and transmit to DCS/PLC desalinations control system;If detect two high When the medium of low phase neighbour's thief hatch liquid level is respectively oil and water, then judge that the sleeping tank oil-water interface of desalination is low at this by intelligent controller At thief hatch, and transmit to DCS/PLC desalinations control system;
When detecting from low to high, if the medium for detecting lowest order thief hatch liquid level is oil, sentenced by intelligent controller The sleeping tank oil-water interface of desalination is determined below minimum thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then judge the sleeping tank oil-water interface of desalination at this by intelligent controller At low thief hatch, and transmit to DCS/PLC desalinations control system.
The liquid level detecting sensor is configured in the middle and lower part side of buffer tank, and the sampling interface tube that collects is less than caching The liquid level detecting sensor of tank.Described collect sampling interface tube to buffer tank bottom distance be liquid level detecting sensor to buffer tank 1/2 of bottom distance or so.
The feed back pump is packed in above buffer tank.Draw and be connected to the dirt for leading to sewage-treatment plant in the desalination tank bottoms face of crouching Water delivery pipe and draw and be connected to medium input pipe, the sewage outlet tube and medium input pipe DCS/PLC that is each configured with being electrically connected takes off The sewage output control valve and medium input control valve of salt control system.Multiple thief hatch are centrally located in same plane, and The plane and the sleeping tank axis oblique of desalination.
The sleeping pot bottom of the desalination is respectively by the feed pipe UNICOM high position storage tank with inlet control valve and by with dirt The blow-off pipe UNICOM sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination controls System processed.When detecting that oil-water interface is higher than setting high-order in the sleeping tank of desalination, DCS/PLC desalination control systems turn on sewage To sewage in the sleeping tank of sewage-treatment plant discharge desalination, oil-water interface reaches setting low level to exhaust-control valve in the sleeping tank of desalination When, DCS/PLC desalination control systems are shut off sewage discharge control valve, stop sewer;When needing to feed, DCS/PLC desalinations Control system opens inlet control valve charging.
The inventive method is:Intelligent controller will can be serially connected on the sleeping tank manual detection pipeline of desalination with threeway form Online profit detection sensor real-time Transmission returns the DCS/PLC desalination control systems of control room so that DCS/PLC desalinations control system System carries out corresponding technological process according to this data.Gaseous pressure sensing of the intelligent controller real-time monitoring on buffer tank Device, when the pressure in buffer tank is close to the sleeping pressure inside the tank of desalination, intelligent controller will start feed back pump, by Jie in buffer tank The matter loopback sleeping tank of salt back off.Controlling of sampling valve of the intelligent controller by control on the automatic sampling tube makes the whole system can To be operated in continuous sampling state.Intelligent controller can control to monitor adopting for many online profit detection sensor places of set simultaneously Sample detection line.
Oil-water interface detection method is under intelligent controller control:All adopt in all hand stop valve standard-sized sheets and manually On the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium in the sleeping tank of desalination is first made by sampling Pipe is pressed into the buffer tank of the gas that prestores to the sleeping tank pressure dynamic balance of caching pressure tank and desalination, then by concatenating with the controlling of sampling valve Online profit detection sensor detect medium character in the controlling of sampling valve place sampling tube, the medium character for measuring It is exactly that the sampling tube draws medium character in the sleeping tank of desalination of the thief hatch position for connecing;When highest order thief hatch medium is measured it is During water, or other height thief hatch media be water and more high-order thief hatch for oil when, intelligent controller above-mentioned medium is just Transmit to DCS/PLC desalinations control system as real-time oil-water interfaces information the thief hatch position of water.
The controlling of sampling valve on the sampling tube of UNICOM's highest order thief hatch is opened, the medium in the sleeping tank of desalination is adopted by this The sampling tube that sample control valve is matched somebody with somebody is pressed into the buffer tank of the gas that prestores, the online profit detection sensor pair that the controlling of sampling valve string is matched somebody with somebody Medium character in the sampling tube is detected, and gives the DCS/PLC desalinations high-order for the thief hatch signal transmission for water Control system.
The online profit detection sensor that the controlling of sampling valve string is matched somebody with somebody is detected to the medium character in the sampling tube;And Testing result is transferred to the DCS/PLC desalinations control system, and repeats aforementioned correlation step.
After using above-mentioned technical proposal, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method are with can enter Row altofrequency water level detecting, is avoided that discharge oiliness is situated between, the advantage of environment-friendly high-efficiency again.
For realizing that the system of electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method is de- in electricity The multiple of sleeping tank equation of equal altitude more than the 1 position thief hatch extraction of the closed pressure resistant desalination of salt equipment are equipped with hand stop valve Vh1 side by side, respectively With the manual sampling tube 21 of manual sampling valve Vh2, the DCS/PLC desalinations control system of electric desalting equipment is according to taking off for measuring in real time In the sleeping tank 1 of salt, oil-water interface position carries out corresponding desalination control, and per root, manual sampling tube 21 is in its hand stop valve Vh1 and manually Pass through automatic sampling tube 22 of the extraction of threeway 31 with controlling of sampling valve V1 of sampling between sampling valve Vh2 respectively, multiple automatic side by side Sampling tube 22 is prestored 6 bottom of closed pressure resistant buffer tank of gas by collecting 23 UNICOM of sampling tube again;In the middle part of buffer tank 6, outside is matched somebody with somebody Put is higher than to collect the liquid level detecting sensor T2 of 23 interface of sampling tube, top to connect gaseous pressure sensor P;
In the case where automatic controller 7 is controlled:In all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and all On the premise of control valve is fully closed, opening a controlling of sampling valve V1 makes medium flow to buffer tank 6, using collect sampling tube 23 (or Automatic sampling tube that the person controlling of sampling valve is located) online profit detection sensor T1 matched somebody with somebody prolongs to medium character in sampling tube When detection after, close controlling of sampling valve V1;Treat gaseous pressure and desalination in buffer tank 6 that gaseous pressure sensor P is detected During sleeping 1 pressure balance of tank, using feed back pump PU and medium in buffer tank is not transmitted back to the sleeping tank 1 of desalination by return pipeline countercurrently, Feed back pump PU stopping feed backs being closed when 6 inner height of buffer tank residing for which is gas phase until liquid level detecting sensor T2 is detected;
Or in the case where automatic controller 7 is controlled:In all hand stop valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and On the premise of all control valves are fully closed, opening a controlling of sampling valve V1 makes medium flow into buffer tank 6, treats gaseous pressure sensor In the buffer tank 6 that device P is detected during sleeping 1 pressure balance of tank of gaseous pressure and desalination, using collecting (or the sampling of sampling tube 23 Automatic sampling tube that control valve is located) match somebody with somebody after line profit detection sensor T1 is detected to medium character in sampling tube, close Close controlling of sampling valve V1;Using feed back pump PU and medium in buffer tank 6 is not transmitted back to the sleeping tank of desalination by return pipeline countercurrently 1, feed back pump PU stopping feed backs being closed when 6 inner height of buffer tank residing for which is gas phase until liquid level detecting sensor T2 is detected. Connect up at the top of the buffer tank 6 and be configured to adjust the prestore manual vent valve V8 of gas flow of buffer tank 6 and (or automatically control Device control atmospheric valve) blow-down pipe 28.
Specifically:Not return pipeline countercurrently be end lead to from the top of buffer tank 6 bottom in buffer tank 6 (or end connection Logical buffer tank bottom) the configuration feed back pump PU and check (non-return) valve CV of feed back pipe 24,24 head end of feed back pipe connection highest and minimum sampling Mouthful (or highest thief hatch) draws between the sampling threeway 31 of automatic sampling tube 22 and controlling of sampling valve V1 that (or connection desalination is crouched Tank).
More specifically:Connection highest and minimum thief hatch (or highest thief hatch) draw the sampling threeway 31 of automatic sampling tube Feed back pump PU is configured with 24 head section of feed back pipe between controlling of sampling valve V1 and opens closing after front opening, feed back pump PU are closed Feed back controls valve V2.
Highest thief hatch is transmitted back to from the medium of high-order thief hatch to draw the sampling threeway 31 of automatic sampling tube 22 and adopt Feed back pipe 24 between sample control valve V1, is transmitted back to minimum thief hatch from the medium of low level thief hatch and draws automatic sampling tube 22 Sampling threeway 31 and controlling of sampling valve V1 between feed back pipe 24.
Specifically:The concatenation of sampling tube 23 two ends of collecting are with end plate or blue disk, with diameter greater than collecting sampling pipe diameter Horizontal detection pipe 40, one end end plate or Lan Panshang of the online profit detection sensor T1 configuration in horizontal detection pipe 40.
Specifically:Connect up at the top of the buffer tank 6 and be configured to adjust buffer tank 6 and prestore the manual emptying of gas flow The blow-down pipe 28 of valve V8 (or automatic controller control atmospheric valve);The latter end for collecting sampling tube 23 in its Connection Cache tank 6 By sampling arm 25 of the Zhi Santong connections downwards with sampling valve Vh3 manually of sampling.It is furnished with storage below the sampling arm 25 Material pond 8.With the efficient water level detecting of altofrequency can be carried out, the advantage for discharging oil medium is avoided that again.
The detection of desalination 1 thief hatch liquid level medium character of sleeping tank is in the case where intelligent controller 7 is controlled:Using the sleeping tank 1 of desalination The sampled pipe flow of medium in the sleeping tank 1 of desalination is made to enter buffer tank 6 with gas phase pressure reduction in buffer tank 6, using online profit detection sensing Device T1 to flowing through or stream is deposited medium character in the sleeping tank 1 of desalination which matches somebody with somebody sampling tube and detected, and directly or according to need will inspection Survey result or detection judged result sends DCS/PLC desalination control systems to;Medium in buffer tank 6 is conveyed using feed back pump PU The sleeping tank 1 of salt, makes gaseous pressure in buffer tank 6 be less than gaseous pressure in the sleeping tank 1 of desalination back off.With altofrequency High-efficient Water can be carried out Position detection, is avoided that the advantage for discharging oil medium again.
The detection of sleeping certain the thief hatch liquid level medium character of tank 1 of desalination is in the case where intelligent controller 7 is controlled:At all manual sections On the premise of only valve Vh1 standard-sized sheets and all manual sampling valve Vh2 and all control valves are fully closed, open the thief hatch and draw sampling tube The controlling of sampling valve V1 of configuration, make medium sampled pipe flow under pressure in the sleeping tank 1 of desalination in the sleeping tank 1 of desalination enter buffer tank 6 to Gaseous pressure sensor detect P gaseous pressure and desalination to surge tank 6 in crouch pressure balance in tank 1 when, matched somebody with somebody using the sampling tube Online profit detection sensor T1 that puts to flowing through or stream is deposited the medium character of the sampling tube and detected, and directly or according to needing Send testing result or detection judged result to DCS/PLC desalination control systems;When gaseous pressure sensor P is detected When gaseous pressure is balanced with the sleeping pressure inside the tank of desalination in buffer tank 6, close controlling of sampling valve V1 and open feed back control valve V2 With feed back pump PU to desalination 1 loopback medium of sleeping tank, until liquid level detecting sensor T2 can't detect liquid medium, feed back pump is closed PU and feed back control valve V2.
After the controlling of sampling valve V1 that the thief hatch draws sampling tube configuration is opened, medium is made in the sleeping tank 1 of desalination in desalination In sleeping tank 1 under pressure sampled pipe flow enter buffer tank 6 to gaseous pressure sensor P detect in surge tank 1 gaseous pressure with de- In the sleeping tank 1 of salt during pressure balance, first detect in line profit detection sensor T1 and close after medium in sampling tube the controlling of sampling valve V1 first closes controlling of sampling valve V1 and detects medium in sampling tube after line profit detection sensor T1, then opens feed back control Valve V2 processed and feed back pump PU, is closed to desalination 1 loopback medium of sleeping tank until liquid level detecting sensor T2 can't detect liquid medium Feed back pump PU and feed back control valve V2.
The detection of desalination 1 oil-water interface of sleeping tank is in the case where intelligent controller 7 is controlled, and examines successively from high to low or from low to high Survey the medium character of desalination 1 each thief hatch liquid level of sleeping tank:
When detecting from high to low, if the medium for detecting highest order thief hatch liquid level is water, sentenced by intelligent controller 7 Sleeping 1 oil-water interface of tank of desalination is determined at highest thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of height neighbouring sample oral fluid position is respectively oil and water, then judge that sleeping 1 oil-water interface of tank of desalination exists by intelligent controller 7 At the low thief hatch, and transmit to DCS/PLC desalinations control system;
When detecting from low to high, if the medium for detecting lowest order thief hatch liquid level is oil, sentenced by intelligent controller 7 Sleeping 1 oil-water interface of tank of desalination is determined below minimum thief hatch, and transmit to DCS/PLC desalinations control system;If detecting two When the medium of individual height neighbouring sample oral fluid position is respectively oil and water, then desalination 1 oil-water interface of sleeping tank is judged by intelligent controller 7 At the low thief hatch, and transmit to DCS/PLC desalinations control system.
The liquid level detecting sensor T2 is configured in the middle and lower part side of buffer tank 6, and described to collect 23 interface of sampling tube low Liquid level detecting sensor T2 in buffer tank 6.23 interface of sampling tube that collects is passed to the distance at 6 bottom of buffer tank for Level Detection 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 is drawn to be connected to and leads to sewage-treatment plant Sewage outlet tube 26 and draw and be connected to medium input pipe 27, the sewage outlet tube 26 and medium input pipe 27 are each configured with electricity Connect the sewage output control valve V3 and medium input control valve V4 of DCS/PLC desalination control systems.Multiple thief hatch are centrally located at In same plane, and the plane and desalination 1 axis oblique of sleeping tank.
The sleeping pot bottom of the desalination is respectively by the feed pipe UNICOM high position storage tank with inlet control valve and by with dirt The blow-off pipe UNICOM sewage-treatment plant of water exhaust-control valve, inlet control valve and sewage blow-down valve are electrically connected DCS/PLC desalination controls System processed.When detecting that oil-water interface is higher than setting high-order in the sleeping tank of desalination, DCS/PLC desalination control systems turn on sewage To sewage in the sleeping tank of sewage-treatment plant discharge desalination, oil-water interface reaches setting low level to exhaust-control valve in the sleeping tank of desalination When, DCS/PLC desalination control systems are shut off sewage discharge control valve, stop sewer;When needing to feed, DCS/PLC desalinations Control system opens inlet control valve charging.
The inventive method and system are:Intelligent controller can will be serially connected in the sleeping tank manual detection pipe of desalination with threeway form Online profit detection sensor real-time Transmission on line returns the DCS/PLC desalination control systems of control room so that DCS/PLC desalinations Control system carries out corresponding technological process according to this data.Gas phase pressure of the intelligent controller real-time monitoring on buffer tank Force transducer, when the pressure in buffer tank is close to the sleeping pressure inside the tank of desalination, intelligent controller will start feed back pump, by buffer tank In the medium loopback sleeping tank of salt back off.Intelligent controller is made entirely installed in the controlling of sampling valve on automatic sampling tube by control System can be operated in continuous sampling state.Intelligent controller can control to monitor the online profit detection sensor institute of many sets simultaneously Sample detecting line.
Oil-water interface detection method is under intelligent controller control:All adopt in all hand stop valve standard-sized sheets and manually On the premise of sample valve and all control valves are fully closed, by opening controlling of sampling valve, the medium in the sleeping tank of desalination is first made by sampling Pipe is pressed into the buffer tank of the gas that prestores to the sleeping tank pressure dynamic balance of caching pressure tank and desalination, then by concatenating with the controlling of sampling valve Online profit detection sensor detect medium character in the controlling of sampling valve place sampling tube, the medium character for measuring It is exactly that the sampling tube draws medium character in the sleeping tank of desalination of the thief hatch position for connecing;When highest order thief hatch medium is measured it is During water, or other height thief hatch media be water and more high-order thief hatch for oil when, intelligent controller above-mentioned medium is just Transmit to DCS/PLC desalinations control system as real-time oil-water interfaces information the thief hatch position of water.
The controlling of sampling valve on the sampling tube of UNICOM's highest order thief hatch is opened, the medium in the sleeping tank of desalination is adopted by this The sampling tube that sample control valve is matched somebody with somebody is pressed into the buffer tank of the gas that prestores, the online profit detection sensor pair that the controlling of sampling valve string is matched somebody with somebody Medium character in the sampling tube is detected, and gives the DCS/PLC desalinations high-order for the thief hatch signal transmission for water Control system.
The online profit detection sensor that the controlling of sampling valve string is matched somebody with somebody is detected to the medium character in the sampling tube;And Testing result is transferred to the DCS/PLC desalinations control system, and repeats aforementioned correlation step.
After using above-mentioned technical proposal, electric desalting equipment oil-water interfaces on-line monitoring of the present invention and control method and system have Having to carry out altofrequency water level detecting, be avoided that discharge oiliness is situated between again, the advantage of environment-friendly high-efficiency.

Claims (10)

1. a kind of electric desalting equipment oil-water interfaces on-line monitoring and control method, the closed pressure resistant desalination in electric desalting equipment crouch tank Multiple manual sampling tubes for being equipped with hand stop valve and manual sampling valve side by side, respectively that many equation of equal altitude positions thief hatch is drawn, electricity The DCS/PLC desalinations control system of desalter carries out corresponding desalination according to oil-water interface position in the sleeping tank of the desalination for measuring in real time Control, it is characterised in that manual sampling tube is drawn by threeway of sampling between its hand stop valve and manual sampling valve respectively per root Go out the automatic sampling tube with controlling of sampling valve, multiple sampling tubes are prestored the close of gas by collecting sampling tube UNICOM again automatically side by side Close pressure buffer tank bottom;In the middle part of buffer tank, outside configuration is matched somebody with somebody higher than the liquid level detecting sensor of sampling interface tube, top is collected 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 automatic sampling tube that the controlling of sampling valve is located or Collect that sampling tube matches somebody with somebody after line profit detection sensor enters line delay detection to medium character in sampling tube, close the sampling control Valve processed;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, using feed back pump Medium in buffer tank is not transmitted back to the sleeping tank of desalination by return pipeline countercurrently, until liquid level detecting sensor is detected residing for which 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 On the premise of closing, opening a controlling of sampling valve makes medium flow into buffer tank, treats the buffer tank that gaseous pressure sensor is detected During the sleeping tank pressure dynamic balance of interior gaseous pressure and desalination, using automatic sampling tube that the controlling of sampling valve is located or collect sampling tube and match somebody with somebody After line profit detection sensor is detected to medium character in sampling tube, close the controlling of sampling valve;Using feed back pump Medium in buffer tank is not transmitted back to the sleeping tank of desalination by return pipeline countercurrently, until liquid level detecting sensor is detected residing for which 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 configuration feed back pump and check (non-return) valve of bottom or end UNICOM buffer tank bottom in buffer tank, feed back tube head end connects desalination The sampling threeway of the automatic sampling tube that sleeping tank or connection highest thief hatch or highest and minimum thief hatch are drawn and controlling of sampling valve Between.
3. method according to claim 2, it is characterised in that connection highest thief hatch or highest and minimum thief hatch are drawn Automatically the feed back tube head section between the sampling threeway of sampling tube and controlling of sampling valve is configured with feed back pump and opens front opening, feed back pump The feed back control valve that closes after closing;
Feed back pipe between the sampling threeway of the automatic sampling tube that connection highest and minimum thief hatch are drawn and controlling of sampling valve When head section is configured with the feed back control valve that feed back pump opens cut out after front opening, feed back pump are closed, from Jie of high-order thief hatch Matter is transmitted back to the feed back pipe between the sampling threeway of the automatic sampling tube of highest thief hatch extraction and controlling of sampling valve, from low level The medium of thief hatch is transmitted back to the feed back between the sampling threeway of the automatic sampling tube 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 tube concatenates two in controlling of sampling valve tract Hold with end plate or blue disk, the horizontal detection pipe with diameter greater than pipe diameter of sampling automatically, the online profit detection sensor configuration One end end plate or Lan Panshang in horizontal detection pipe;
The sampling tube concatenation two ends of collecting are with end plate or blue disk, with diameter greater than the horizontal detection pipe for collecting sampling pipe diameter, institute State one end end plate or Lan Panshang of the online profit detection sensor configuration in horizontal detection pipe.
5. according to the arbitrary methods described of claim 1-4, it is characterised in that the sampling tube that collects is at the end of its Connection Cache tank Section is by sampling arm of the Zhi Santong connections downwards with sampling valve manually of sampling;Connect up configuration to use at the top of the buffer tank In adjust buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.
6. the system for realizing electric desalting equipment oil-water interfaces on-line monitoring and control method described in claim 1 is used for, de- in electricity The multiple of many equation of equal altitude position thief hatch extractions of the sleeping tank of the closed pressure resistant desalination of salt equipment are equipped with hand stop valve and handss side by side, respectively The manual sampling tube of dynamic sampling valve, the DCS/PLC desalinations control system of electric desalting equipment is according in the sleeping tank of the desalination for measuring in real time Oil-water interface position carries out corresponding desalination control, it is characterised in that per root, manual sampling tube is in its hand stop valve and sampling manually The automatic sampling tube with controlling of sampling valve is drawn by threeway of sampling respectively between valve, multiple sampling tubes automatically arranged side by side are again by converging Total sampling tube UNICOM prestores the closed pressure resistant buffer tank bottom of gas;In the middle part of buffer tank, outside configuration is higher than to collect sampling interface tube Liquid level detecting sensor, top 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 automatic sampling tube that the controlling of sampling valve is located or Collect that sampling tube matches somebody with somebody after line profit detection sensor enters line delay detection to medium character in sampling tube, close the sampling control Valve processed;In the buffer tank that gaseous pressure sensor is detected during sleeping with the desalination tank pressure dynamic balance of gaseous pressure, using feed back pump Medium in buffer tank is not transmitted back to the sleeping tank of desalination by return pipeline countercurrently, until liquid level detecting sensor is detected residing for which 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 On the premise of closing, opening a controlling of sampling valve makes medium flow into buffer tank, treats the buffer tank that gaseous pressure sensor is detected During the sleeping tank pressure dynamic balance of interior gaseous pressure and desalination, using automatic sampling tube that the controlling of sampling valve is located or collect sampling tube and match somebody with somebody After line profit detection sensor is detected to medium character in sampling tube, close the controlling of sampling valve;Using feed back pump Medium in buffer tank is not transmitted back to the sleeping tank of desalination by return pipeline countercurrently, until liquid level detecting sensor is detected residing for which 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 configuration feed back pump and check (non-return) valve of bottom or end UNICOM buffer tank bottom in buffer tank, feed back tube head end connects desalination The sampling threeway of the automatic sampling tube that sleeping tank or connection highest thief hatch or highest and minimum thief hatch are drawn and controlling of sampling valve Between.
8. system according to claim 7, it is characterised in that connection highest thief hatch or highest and minimum thief hatch are drawn Automatically the feed back tube head section between the sampling threeway of sampling tube and controlling of sampling valve is configured with feed back pump and opens front opening, feed back pump The feed back control valve that closes after closing;
Feed back pipe between the sampling threeway of the automatic sampling tube that connection highest and minimum thief hatch are drawn and controlling of sampling valve When head section is configured with the feed back control valve that feed back pump opens cut out after front opening, feed back pump are closed, from Jie of high-order thief hatch Matter is transmitted back to the feed back pipe between the sampling threeway of the automatic sampling tube of highest thief hatch extraction and controlling of sampling valve, from low level The medium of thief hatch is transmitted back to the feed back between the sampling threeway of the automatic sampling tube that minimum thief hatch is drawn and controlling of sampling valve Pipe.
9. method according to claim 6, it is characterised in that the automatic sampling tube concatenates two in controlling of sampling valve tract Hold with end plate or blue disk, the horizontal detection pipe with diameter greater than pipe diameter of sampling automatically, the online profit detection sensor configuration One end end plate or Lan Panshang in horizontal detection pipe;
The sampling tube concatenation two ends of collecting are with end plate or blue disk, with diameter greater than the horizontal detection pipe for collecting sampling pipe diameter, institute State one end end plate or Lan Panshang of the online profit detection sensor configuration in horizontal detection pipe.
10. according to the arbitrary methods described of claim 6-9, it is characterised in that the sampling tube that collects is at the end of its Connection Cache tank Section is by sampling arm of the Zhi Santong connections downwards with sampling valve manually of sampling;Connect up configuration to use at the top of the buffer tank In adjust buffer tank prestore gas flow manual vent valve or automatic controller control atmospheric valve blow-down pipe.
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CN104587904A (en) * 2015-01-29 2015-05-06 高逸帆 Discharge method of two liquid mediums with different specific densities and automatic discharging system
CN105676891A (en) * 2016-01-28 2016-06-15 高翔 Two-different-specific-gravity-liquid storage tank medium identification and direct discharge control method and system
CN205333626U (en) * 2015-12-23 2016-06-22 艾山江·买买提依名 Sample formula crude oil moisture content on -line measuring appearance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0298582A (en) * 1988-08-02 1990-04-10 Idemitsu Kosan Co Ltd Method and appratus for draining water from oil tank
CN201222012Y (en) * 2008-07-21 2009-04-15 谢永东 Automatic sampling warehouse apparatus for oil tank
WO2013013395A1 (en) * 2011-07-27 2013-01-31 Siemens Aktiengesellschaft Device and method for measuring liquid level
CN203345496U (en) * 2013-04-28 2013-12-18 南京工业大学 Oil tank automatic water cutting system
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Patentee before: Gao Xiang