CN102607826A - Anti-surging valve performance testing table based on PLC (Programmable Logic Controller) and testing method - Google Patents
Anti-surging valve performance testing table based on PLC (Programmable Logic Controller) and testing method Download PDFInfo
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- CN102607826A CN102607826A CN2011104577512A CN201110457751A CN102607826A CN 102607826 A CN102607826 A CN 102607826A CN 2011104577512 A CN2011104577512 A CN 2011104577512A CN 201110457751 A CN201110457751 A CN 201110457751A CN 102607826 A CN102607826 A CN 102607826A
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Abstract
The invention relates to an anti-surging valve performance testing table, aiming to provide an anti-surging valve performance testing table based on a PLC (Programmable Logic Controller) and a testing method. The anti-surging valve performance testing table comprises a pipe section and a PLC control system; two digital input interfaces of the PLC control system are connected to a traveling switch through cables; three analogue input interfaces are respectively connected to an intelligent locator of an anti-surging valve, a pressure sensor of an air source and a pressure sensor of the pipe section through cables; and one digital output interface is connected to an electromagnetic valve through the cable, and one analogue output interface is connected to the intelligent locator of the anti-surging valve to be tested through the cable. According to the anti-surging valve performance testing table based on the PLC and the testing method, disclosed by the invention, the test can be automatically finished, no manual interference exists, dangerousness of a high-pressure environment in a testing process is avoided, testing time is shortened, the testing device has high precision, a result is exact and reliable, a process is visualized, and response to an abnormal situation is quick; and in addition, the testing table is comprehensive in functions, high in integration degree, simple and convenient in operation, flexible in design and strong in expandability.
Description
Technical field
The present invention relates to a kind of test board of anti-surge valve, definite says, relates to a kind of anti-surge valve performance test board and method of testing that can remote-operated automatic control.
Background technology
The anti-surge valve is to prevent that the device that surge phenomenon takes place from appearring in centrifugal gas compressor at work.When centrifugal compressor is reduced to a certain numerical value at the certain and flow of output pressure, just surge will take place.In order to prevent that surge from taking place, and keep flow not get into surge area.Compressor is in operation, and when the pipe system resistance raises, flow will reduce thereupon, might be reduced to below the permissible value.Thinking of Surge Prevention System got the setting that the flow lower safety limit is a regulator, when flow measurements is higher than setting, and the atmospheric valve complete shut-down; When flow measurements is lower than setting, open atmospheric valve, increase flow through air compressor machine, prevent to get into surge area.Perfect anti-surge installation is to control according to compressor delivery pressure and two signals of flow.
The environment for use of anti-surge valve is in the high-pressure area, detect its each item performance, also needs site environment that is virtually reality like reality.The invention provides and realize the safe and reliable detection method of anti-surge valve performance, and match, have increasingly automated and intelligentized measurement mechanism with detection method.
Summary of the invention
The technical matters that the present invention will solve is, overcomes deficiency of the prior art, and a kind of anti-surge valve performance test board and method of testing based on PLC is provided.
Be the technical solution problem, scheme of the present invention is:
A kind of anti-surge valve performance test board based on PLC is provided, comprises the pipeline section that is used to install tested anti-surge valve, this test board also comprises the PLC control system; The PLC control system comprises 2 digital input amount interfaces, 3 analog input amount interfaces, 1 digital output interface and 1 imitated output quantity interface; Said 2 digital input amount interfaces are connected to travel switch by cable, are used for transmitting sending valve wide open feedback of status signal and valve complete shut-down feedback of status signal; Said 3 analog input amount interfaces are connected to the intelligent positioner of anti-surge valve, the pressure transducer of source of the gas, the pressure transducer of pipeline section respectively by cable, are used to transmit anti-surge valve position feedback signal, bleed pressure signal and pipeline section internal pressure signal; Said 1 digital output interface is connected to solenoid valve by cable, control electromagnetic valve electric and dead electricity; Said 1 imitated output quantity interface is connected to the intelligent positioner of tested anti-surge valve by cable, is used to transmit the action control signal of tested anti-surge valve.
As a kind of improvement, said source of the gas is a gas-holder.
As a kind of improvement, the pressure transducer of said source of the gas is arranged on the gas-holder; Air compressor is connected to gas-holder; Gas-holder is connected to said pipeline section by the road, establishes reduction valve on this pipeline; Gas-holder also is connected to the pneumatic actuator of tested anti-surge valve through another pipeline.
As a kind of improvement, said PLC control system and PC are realized both-way communication.
As a kind of improvement, said PC links to each other with printer.
The present invention also provides a kind of anti-surge valve performance method of testing based on aforementioned test board, comprises the measurement of fast ETAD expected time of arrival and departure and the measurement of control accuracy:
(1) measure fast ETAD expected time of arrival and departure: the first complete shut-down of tested anti-surge valve, carry pressurized air by gas-holder to pipeline section, after pressure reaches test necessary requirement (0.4Mpa); The PLC control system transmits control signal; Let solenoid valve dead electricity in the tested anti-surge valve switch board, the timer that is built in the PLC control system simultaneously picks up counting, and touches travel switch after opening to the valve wide open state; The valve wide open position signalling feeds back to the PLC control system immediately; Timer stops timing, two time point differences that timer obtains, the fast ETAD expected time of arrival and departure that promptly tested valve is required;
(2) measure control accuracy: choose less aperture, medium aperture, three check points of larger opening respectively; The PLC control system is sent valve opening numerical value to the valve intelligent positioner; After tested anti-surge opening of valves was stable, the valve intelligent positioner was passed to the PLC control system with its location feedback value, through relatively getting difference; Choose in the corresponding aperture difference of resulting three check points maximum that, as the control accuracy of tested anti-surge valve.
Among the present invention; Air compressor is as the power section of whole device; Guarantee that with air compressor the gas-holder internal pressure remains on required force value (0.8Mpa); Guarantee that simultaneously gas-holder can provide test required force value (0.4Mpa) to pipeline section, making pipeline section inside to be modeled to really is working environment.
Beneficial effect of the present invention is:
The present invention can accomplish the performance test of anti-surge valve automatically, and the centre need not manual intervention, has avoided the danger of anti-surge valve performance test process mesohigh environment, has shortened the test duration, and the proving installation degree of accuracy is high, and test result accurately and reliably.Test process is visual, to the abnormal conditions reflection rapidly.Test board is multiple functional, and integrated level is high, and is simple to operation, and flexible design, extendability are strong.
Description of drawings
Fig. 1 is the test board block diagram of system of the present invention.
Fig. 2 is a test board connection layout of the present invention.
Fig. 3 is a PLC hardware connection layout.
Embodiment
Fig. 1 is the block diagram of system of test board of the present invention.The PLC control system is tested through carrying out its internal processes Control work device automatically.Both-way communication between PLC control system and the PC, PLC control system and equipment are realized both-way communication.
Fig. 2 is the connection synoptic diagram of test board of the present invention; Air compressor 6 is as the power section of whole device; Guarantee that with air compressor 6 gas-holder 1 internal pressure remains on required force value (0.8Mpa); Guarantee that simultaneously gas-holder 1 can provide test required force value (0.4Mpa) to pipeline section 3, making pipeline section inside to be modeled to really is working environment.Pressure transducer 4 can carry out the real-time monitoring of pressure to the source of the gas in the gas-holder 1.
Measure fast ETAD expected time of arrival and departure: tested anti-surge valve body 2 first complete shut-downs, carry pressurized air by gas-holder 1 to pipeline section 3, after pressure reaches the test necessary requirement; The PLC control system transmits control signal; Let solenoid valve 8 dead electricity in the tested anti-surge valve switch board, the timer that is built in the PLC control system simultaneously picks up counting, and touches travel switch after opening to the valve wide open state; The valve wide open position signalling feeds back to the PLC control system immediately; Timer stops timing, two time point differences that timer obtains, the fast ETAD expected time of arrival and departure that promptly tested valve is required.
Measure control accuracy: choose less aperture, medium aperture, three check points of larger opening respectively; The PLC control system is sent valve opening numerical value to valve intelligent positioner 7; After tested anti-surge valve body 2 was opened and stablized, valve intelligent positioner 7 was passed to the PLC control system with its location feedback value, through relatively getting difference; Choose in the corresponding aperture difference of resulting three check points maximum that, as the control accuracy of tested anti-surge valve.
Fig. 3 is the hardware connection layout of PLC control system, and the input and output of PLC control system are: 2 digital input amounts are respectively valve wide open feedback of status, valve complete shut-down feedback of status; 3 analog input amounts are respectively anti-surge valve position feedback, gas-holder force value, flanged pipe intersegmental part force value; 1 digital output, whether electric getting of solenoid valve be; 1 imitated output quantity, the action control of anti-surge valve.Through hardware designs as shown in the figure, the program in the PLC control system just can be unified control to the running status of all working device, lets their coordination operations, accomplishes each item test.
Obviously, the invention is not restricted to above-mentioned implementation method, many correlation techniques can also be arranged, PLC control program especially, similar can have many kinds.All correlation techniques that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1. the anti-surge valve performance test board based on PLC comprises the pipeline section that is used to install tested anti-surge valve, it is characterized in that this test board also comprises the PLC control system; The PLC control system comprises 2 digital input amount interfaces, 3 analog input amount interfaces, 1 digital output interface and 1 imitated output quantity interface;
Said 2 digital input amount interfaces are connected to travel switch by cable, are used to transmit valve wide open feedback of status signal and valve complete shut-down feedback of status signal;
Said 3 analog input amount interfaces are connected to the intelligent positioner of anti-surge valve, the pressure transducer of source of the gas and the pressure transducer of pipeline section respectively by cable, are used to transmit anti-surge valve position feedback signal, bleed pressure signal and pipeline section internal pressure signal;
Said 1 digital output interface is connected to the solenoid valve in the anti-surge valve switch board by cable, control electromagnetic valve electric and dead electricity;
Said 1 imitated output quantity interface is connected to the intelligent positioner of tested anti-surge valve by cable, is used to transmit the action control signal of tested anti-surge valve.
2. test board according to claim 1 is characterized in that said source of the gas is a gas-holder.
3. test board according to claim 2 is characterized in that the pressure transducer of said source of the gas is arranged on the gas-holder; Air compressor is connected to gas-holder, and gas-holder is connected to said pipeline section by the road, establishes reduction valve on this pipeline; Gas-holder also is connected to the pneumatic actuator of tested anti-surge valve through another pipeline.
4. test board according to claim 1 is characterized in that, said PLC control system and PC are realized both-way communication.
5. test board according to claim 1 is characterized in that said PC links to each other with printer.
6. the anti-surge valve performance method of testing based on the said test board of claim 1 is characterized in that, comprises the measurement of fast ETAD expected time of arrival and departure and the measurement of control accuracy:
(1) measure fast ETAD expected time of arrival and departure: the first complete shut-down of tested anti-surge valve, carry pressurized air by gas-holder to pipeline section, after pressure reaches the pressure of test necessary requirement; The PLC control system transmits control signal; Let solenoid valve dead electricity in the tested anti-surge valve switch board, the timer that is built in the PLC control system simultaneously picks up counting, and touches travel switch after opening to the valve wide open state; The valve wide open position signalling feeds back to the PLC control system immediately; Timer stops timing, two time point differences that timer obtains, the fast ETAD expected time of arrival and departure that promptly tested valve is required;
(2) measure control accuracy: choose less aperture, medium aperture, three check points of larger opening respectively; The PLC control system is sent valve opening numerical value to the valve intelligent positioner; After tested anti-surge opening of valves was stable, the valve intelligent positioner was passed to the PLC control system with its location feedback value, through relatively getting difference; Choose maximum that in the corresponding aperture difference of three check points of gained, as the control accuracy of tested anti-surge valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110457751.2A CN102607826B (en) | 2011-12-31 | 2011-12-31 | Anti-surging valve performance testing table based on PLC (Programmable Logic Controller) and testing method |
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| CN201110457751.2A CN102607826B (en) | 2011-12-31 | 2011-12-31 | Anti-surging valve performance testing table based on PLC (Programmable Logic Controller) and testing method |
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| CN102607826B CN102607826B (en) | 2014-01-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535303A (en) * | 2014-08-19 | 2015-04-22 | 机械工业仪器仪表综合技术经济研究所 | Device and method for testing partial stroke and service life of execution mechanism |
| CN105425738A (en) * | 2014-09-12 | 2016-03-23 | 费希尔-罗斯蒙特系统公司 | Methods and apparatuses to communicatively couple on/off valves to controllers in a process control systam |
| CN107543036A (en) * | 2017-07-21 | 2018-01-05 | 江苏永钢集团有限公司 | A kind of dual gas supply control method of Pneumatic anti-surging valve |
| CN111197593A (en) * | 2018-11-19 | 2020-05-26 | 宝山钢铁股份有限公司 | Air separation unit air compressor surge-proof blow-down valve control method |
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| CN1587951A (en) * | 2004-08-18 | 2005-03-02 | 武汉天澄环保科技股份有限公司 | Pulse valve performance detecting device and method |
| CN101813573A (en) * | 2010-04-16 | 2010-08-25 | 上海市特种设备监督检验技术研究院 | Automatic control valve life tester |
| CN101876594A (en) * | 2009-04-28 | 2010-11-03 | 上海袋式除尘配件有限公司 | Method for detecting performance of pulse valve |
| CN202403905U (en) * | 2011-12-31 | 2012-08-29 | 杭州哲达科技股份有限公司 | Anti-surge valve performance testing bench based on programmable logic controller (PLC) |
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2011
- 2011-12-31 CN CN201110457751.2A patent/CN102607826B/en active Active
Patent Citations (4)
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| CN1587951A (en) * | 2004-08-18 | 2005-03-02 | 武汉天澄环保科技股份有限公司 | Pulse valve performance detecting device and method |
| CN101876594A (en) * | 2009-04-28 | 2010-11-03 | 上海袋式除尘配件有限公司 | Method for detecting performance of pulse valve |
| CN101813573A (en) * | 2010-04-16 | 2010-08-25 | 上海市特种设备监督检验技术研究院 | Automatic control valve life tester |
| CN202403905U (en) * | 2011-12-31 | 2012-08-29 | 杭州哲达科技股份有限公司 | Anti-surge valve performance testing bench based on programmable logic controller (PLC) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535303A (en) * | 2014-08-19 | 2015-04-22 | 机械工业仪器仪表综合技术经济研究所 | Device and method for testing partial stroke and service life of execution mechanism |
| CN105425738A (en) * | 2014-09-12 | 2016-03-23 | 费希尔-罗斯蒙特系统公司 | Methods and apparatuses to communicatively couple on/off valves to controllers in a process control systam |
| US10725442B2 (en) | 2014-09-12 | 2020-07-28 | Fisher-Rosemount Systems, Inc. | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| CN107543036A (en) * | 2017-07-21 | 2018-01-05 | 江苏永钢集团有限公司 | A kind of dual gas supply control method of Pneumatic anti-surging valve |
| CN111197593A (en) * | 2018-11-19 | 2020-05-26 | 宝山钢铁股份有限公司 | Air separation unit air compressor surge-proof blow-down valve control method |
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| CN102607826B (en) | 2014-01-29 |
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