CN100516815C - Automatic testing method and apparatus for performance of breathing relief valve - Google Patents
Automatic testing method and apparatus for performance of breathing relief valve Download PDFInfo
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- CN100516815C CN100516815C CNB2006101049519A CN200610104951A CN100516815C CN 100516815 C CN100516815 C CN 100516815C CN B2006101049519 A CNB2006101049519 A CN B2006101049519A CN 200610104951 A CN200610104951 A CN 200610104951A CN 100516815 C CN100516815 C CN 100516815C
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Abstract
This invention relates to breath safety valve property automatic test method and its device, which comprises test device and control device, wherein, the gas in valve is connected to breath wind through release valve through gas control valve and wind storage package; the vacuum pump is connected to breath wind connected to storage package through breath control valve; the wind storage package is set with breathe, gas sealing pressure sensor and its interface connected to breathe safety valve chamber. This invention firstly determines test type and sets standard pressure parameters and then collects test breathe parameters to get test result through control device comparing analysis.
Description
Technical field
The present invention relates to a kind of automatic test approach and device thereof of micro-processor controlled performance of breathing relief valve, be particularly useful for the performance test of tank car with breathing relief valve.
Background technology
The research and development of 70 tonnes of railway novel wagons are promoted, to applicability, the safe reliability requirement raising thereupon of tank car.70 tonnes of tank car dresses are used the booster type manhole, and the sealing property of manhole is had relatively high expectations, and therefore, the performance quality of breathing relief valve are had higher requirement.The testing table of existing test performance of breathing relief valve, mainly by manually-operated, method of testing and equipment performance fall behind, and can not satisfy the requirement of 70 tonnes of tank cars to the breathing relief valve technology, and mainly there is following shortcoming in it:
1. testing process can not realize automatic control.
2. detect testing table and adopt hand-guided, manually read, logging test results, influenced by human factor, error is big, and is prone to error.
3. test result can not be gathered automatically, be stored, and inquires about, analyzes, reviews inconvenience.
4. sniff test is subjected to the influence of vacuum pipe and pump, and variations in flow is big, and the demonstration indicator is a dither state, can't read precise information.
5. detect test and have unsafe factor.For example, promptly there is unsafe hidden danger in valve seat flange clamp system.
Summary of the invention
The object of the present invention is to provide a kind of automatic test approach and device thereof of performance of breathing relief valve, it has solved to detect in the background technology can not realize automatic control, influenced greatly by human factor, and it is big to detect error, has the technical matters of unsafe factor.
Technical solution of the present invention is:
A kind of automatic test approach of performance of breathing relief valve, its special character is: its performing step comprises:
(1) interface with breathing relief valve to be measured is connected with the interface of test air-channel system;
(2) determine category of test: category of test comprises breath tester, air-breathing test and air tightness test;
(3) select test mode: test mode comprises full-automatic testing and individual event test, selects full-automatic testing or individual event test by Computer Control Unit; Described full-automatic testing comprises breath tester, air-breathing test and air tightness test, and described individual event test is one of breath tester, air-breathing test or air tightness test item;
(4) pressure parameter that sets up standard: with expiration normal pressure parameter, air-breathing normal pressure parameter and impermeability normal pressure parameter input Computer Control Unit;
(5) collecting test parameter:
(5.1) gather the breath tester parameter:
(5.1.1) open the breath tester gas circuit, pressurized air is imported the expiration bellows chamber 4 of testing air-channel system by gas admittance valve 1, behind expiration bellows chamber 4 pressure buffers, enter storage bellows chamber 11, be communicated with the interface of breathing relief valve 12 to be measured by storage bellows chamber 11 again; Gather the breath tester pressure parameter by the breath pressure sensor 15 that is arranged on the storage bellows chamber 11;
(5.1.2) breath tester pressure parameter and expiration normal pressure parameter are compared, obtain test result by Computer Control Unit;
(5.2) gather air-breathing test parameter:
(5.2.1) open air-breathing test gas circuit, start vacuum pump 8, vacuum pump 8 is communicated with storage bellows chamber 11 by air-breathing bellows chamber 7, is communicated with breathing relief valve 12 interfaces to be measured by storage bellows chamber 11 again; Gather air-breathing test pressure parameter by the breath pressure sensor 15 that is arranged on the storage bellows chamber 11;
(5.2.2) air-breathing test pressure parameter and air-breathing normal pressure parameter are compared, obtain test result by Computer Control Unit;
(5.3) gather the air tightness test parameter:
(5.3.1) open the air tightness test gas circuit, air is imported the expiration bellows chamber 4 of testing air-channel system by gas admittance valve 1, behind expiration bellows chamber 4 pressure buffers, enter storage bellows chamber 11; Close the air tightness test gas circuit, gather the air tightness test pressure parameter by the impermeability pressure transducer 9 that is arranged on the storage bellows chamber 11;
(5.3.2) air tightness test pressure parameter and impermeability normal pressure parameter are compared, obtain test result by Computer Control Unit;
(6) when test result does not meet standard, carry out data backup, data derivation, end test; When the test result conformance with standard, carry out data backup and/or data and derive, finish test or continue the follow-up test program.
Above-mentioned collecting test parameter is to control actuating unit by Computer Control Unit to realize.
Above-mentioned data derive the numeral that comprises the collecting test parameter and show interface real-time pressure curve display or printing etc.
Above-mentioned performing step comprises and also comprises authentication that described authentication is with comprising the user profile input Computer Control Unit of user name, user cipher, by Computer Control Unit demonstration validation user right.
A kind of automatic testing equipment of performance of breathing relief valve comprises proving installation and control device, and its special character is: described proving installation comprises test air-channel system and valve seat clamp device; Described test air-channel system comprises breath tester loop and air-breathing test loop; Described breath tester loop comprises the expiration bellows chamber 4 that is communicated with by gas path pipe with gas admittance valve 1, be arranged at expiration bellows chamber 4 and be communicated with reduction valve 3 on the gas path pipe with gas admittance valve 1, the storage bellows chamber 11 that is communicated with by gas path pipe with expiration bellows chamber 4, be arranged at expiration bellows chamber 4 and be communicated with expiration operation valve 5 on the gas path pipe with storage bellows chamber 11, described storage bellows chamber 11 is provided with the interface that is communicated with the valve pocket of breathing relief valve 12 to be measured; Described air-breathing test loop comprises vacuum pump 8, the air-breathing bellows chamber 7 that is communicated with by gas path pipe with vacuum pump 8, described air-breathing bellows chamber 7 is communicated with storage bellows chamber 11 by gas path pipe, and described air-breathing bellows chamber 7 is provided with suction control valve 6 with the gas path pipe that storage bellows chamber 11 is communicated with; Described valve seat clamp device is made of clamp system that grips breathing relief valve 12 to be measured and the operating-controlling mechanism of controlling clamp system; Described control device comprises Computer Control Unit, is connected to the signal pickup assembly of Computer Control Unit input end, is connected to the actuating unit of Computer Control Unit output terminal; Described Computer Control Unit comprises computing machine 19, is connected to the A/D converter 18 of described computing machine 19 input ends, is connected to the D/A converter 20 of described computing machine 19 output terminals; Described signal pickup assembly is made of pressure transducer, and the output terminal of described pressure transducer is connected to the input end of A/D converter 18; Described actuating unit comprises expiration operation valve 5 and suction control valve 6, and described expiration operation valve 5 is the solenoid valves that are connected with D/A converter 20 output terminals with suction control valve 6; Described pressure transducer comprises breath pressure sensor 15 and inspiratory pressure sensor 17, and described breath pressure sensor 15 and inspiratory pressure sensor 17 all are arranged on the storage bellows chamber 11.
The clamp system of above-mentioned valve seat clamp device is a corner reservoir 13, the reversal valve 2 that is communicated with corner reservoir 13 by two gas path pipes; Described reversal valve 2 is communicated with gas admittance valve 1 by gas path pipe; Described storage bellows chamber 11 is provided with vent valve 10.
Above-mentioned test air-channel system also comprises the air tightness test loop; Described air tightness test loop comprises the expiration bellows chamber 4 that is communicated with by gas path pipe with gas admittance valve 1, be arranged at expiration bellows chamber 4 and be communicated with reduction valve 3 on the gas path pipe with gas admittance valve 1, with expiration bellows chamber 4 by the storage bellows chamber 11 that gas path pipe is communicated with, be arranged at expiration bellows chamber 4 and be communicated with expiration operation valve 5 on the gas path pipe with storage bellows chamber 11; Described pressure transducer comprises airtight pressure transducer 9, and this airtight pressure transducer 9 is arranged on the storage bellows chamber 11.
Above-mentioned airtight pressure transducer 9 is a diffusion silicon pressure sensor; Described breath pressure sensor 15 and inspiratory pressure sensor 17 are diffusion silicon pressure sensor.
Above-mentioned storage bellows chamber 11 is provided with multi-channel digital Displaying Meter 16.
Aforementioned calculation machine control device comprises demonstration, the printing equipment 21 that is arranged at computing machine 19 output terminals.
The present invention has the following advantages:
The present invention is used for performance of breathing relief valve and carries out automatically, checks accurately, to guarantee the quality of safety valve manufacturing and maintenance.
1. the detection technique conditional request of breathing relief valve, the expiration opening pressure of light oil type tank car is 150 ± 20Kpa, air-breathing opening pressure is-1～-2Kpa; The expiration opening pressure 100 ± 20Kpa of sticking oils tank car, air-breathing opening pressure-1～-2Kpa.The present invention satisfies this detection technique conditional request fully, and is not subjected to interference from human factor, and test is accurate, and accuracy of detection is higher.
2. can capture pressure and change the critical conditions of opening with the safety valve valve plate.
3. employing system controlled by computer, test process are full-automatic, and the test data digital collection is convenient to collection, the storage of data, inquire about, analyze, call, show, printing etc.
4. control program adopts 128 general-purpose version configuration softwares, but the simulation test process can show data, the curve of test change procedure such as pressure in real time, and intuitive display is convenient to analyze and improve the safety valve performance.
5. test process automation control, easy and simple to handle, improved working environment, greatly reduce working strength.
6. detection mode is flexible, can realize full-automatic testing, individual event test, manual test of safety valve etc., also can carry out self check to test macro.
7. compact conformation, volume is little; Antijamming capability is strong; Be fit to industrial environment, maintenance, repair are convenient.
Description of drawings
Fig. 1 is the structural representation of present device proving installation;
Fig. 2 is the theory diagram of present device control device;
Fig. 3 is the real-time change curve map of breath pressure test implementation example of the present invention;
Fig. 4 is the real-time change curve map of pressure of inspiration(Pi) test implementation example of the present invention.
Drawing reference numeral explanation: 1-gas admittance valve, 2-reversal valve, 3-reduction valve, 4-expiration bellows chamber, 5-expiration operation valve, 6-suction control valve, the air-breathing bellows chamber of 7-, the 8-vacuum pump, the airtight pressure transducer of 9-, 10-vent valve, 11-stores up bellows chamber, the 12-breathing relief valve, 13-corner reservoir, 14-gas path pipe, 15-breath pressure sensor, 16-multi-channel digital Displaying Meter, 17-inspiratory pressure sensor, 18-A/D converter, the 19-computing machine, the 20-D/A converter, 21-demonstration/printing equipment, 22-keyboard/mouse input media.
Embodiment
The present invention can simulate practical situations, can cause the action of safety valve valve plate according to the pressure variation in the tank car tank body, and the present invention judges by detecting the force value that the safety valve valve plate is opened whether the safety valve performance adheres to specification.
Referring to Fig. 1,2, the performing step of performance of breathing relief valve automatic test approach of the present invention comprises:
(1) at first is authentication.Authentication is with comprising the user profile input Computer Control Unit of user name, user cipher, by Computer Control Unit demonstration validation user right.
(2) interface with breathing relief valve to be measured is connected with the interface of test air-channel system.
(3.1) determine category of test: category of test comprises breath tester, air-breathing test and air tightness test.
(3.2) select test mode: test mode comprises full-automatic testing and individual event test, selects full-automatic testing or individual event test by Computer Control Unit.Full-automatic testing comprises breath tester, air-breathing test and air tightness test, and described individual event test is one of breath tester, air-breathing test or air tightness test item.
(3.3) pressure parameter that sets up standard: with expiration normal pressure parameter, air-breathing normal pressure parameter and impermeability normal pressure parameter input Computer Control Unit.
(4) gather the breath tester parameter: open the breath tester gas circuit, pressurized air is imported the expiration bellows chamber 4 of test air-channel system by gas admittance valve 1, behind expiration bellows chamber 4 pressure buffers, enter storage bellows chamber 11, be communicated with the interface of breathing relief valve 12 to be measured by storage bellows chamber 11 again.Gather the breath tester pressure parameter by the breath pressure sensor 15 that is arranged on the storage bellows chamber 11.The collecting test parameter is to control actuating unit by Computer Control Unit to realize.By Computer Control Unit breath tester pressure parameter and expiration normal pressure parameter are compared, obtain test result.
(5) gather air-breathing test parameter: open air-breathing test gas circuit, start vacuum pump 8, vacuum pump 8 is communicated with storage bellows chamber 11 by air-breathing bellows chamber 7, is communicated with breathing relief valve 12 interfaces to be measured by storage bellows chamber 11 again.Gather air-breathing test pressure parameter by the breath pressure sensor 15 that is arranged on the storage bellows chamber 11.By Computer Control Unit air-breathing test pressure parameter and air-breathing normal pressure parameter are compared, obtain test result.
(6) gather the air tightness test parameter: earlier by the gas in the 10 discharge storage bellows chambers 11 of the vent valve on the storage bellows chamber 11.Open the air tightness test gas circuit, air is imported the expiration bellows chamber 4 of testing air-channel system by gas admittance valve 1, behind expiration bellows chamber 4 pressure buffers, enter storage bellows chamber 11.Close the air tightness test gas circuit, gather the air tightness test pressure parameter by the impermeability pressure transducer 9 that is arranged on the storage bellows chamber 11.By Computer Control Unit air tightness test pressure parameter and impermeability normal pressure parameter are compared, obtain test result.
(7) when test result does not meet standard, carry out data backup, data derivation, end test.When the test result conformance with standard, carry out data backup and/or data and derive, finish test or continue the follow-up test program.Data derive numeral demonstration, interface real-time pressure curve display or the printing etc. that comprise the collecting test parameter.
Referring to Fig. 1, the ATE (automatic test equipment) of performance of breathing relief valve of the present invention mainly is made of proving installation and control device.Proving installation mainly is made of test air-channel system and valve seat clamp device.The test air-channel system is divided into breath tester loop and air-breathing test loop.The expiration bellows chamber 4 in breath tester loop is communicated with gas admittance valve 1 by gas path pipe, and the air intake opening place of expiration bellows chamber 4 is provided with reduction valve 3.Expiration bellows chamber 4 is communicated with storage bellows chamber 11 by expiration operation valve 5, and storage bellows chamber 11 is provided with the interface that is communicated with the valve pocket of breathing relief valve 12 to be measured.The breath tester loop is used for the breath test of safety valve, and gas admittance valve 1 is an opening during work, and vent valve 10 is a closed condition.The vacuum pump 8 of air-breathing test loop is communicated with air-breathing bellows chamber 7, and air-breathing bellows chamber 7 is communicated with storage bellows chamber 11 by suction control valve 6, and the corner reservoir 13 of valve seat clamp device is communicated with reversal valve 2 by two gas path pipes 14, and reversal valve 2 is communicated with gas admittance valve 1.Air-breathing test loop is used for the sniff test of safety valve, and gas admittance valve 1 is a closed condition during work.The expiration operation valve 5 of actuating unit of the present invention and the employing solenoid valve of suction control valve 6 are realized.Breath pressure sensor 15, inspiratory pressure sensor 17 and airtight pressure transducer 9 adopt diffusion silicon pressure sensor, all are arranged on the storage bellows chamber 11.Diffusion silicon pressure sensor has that volume is little, and cost is low, and is highly sensitive, and overload capacity and antijamming capability are strong, simple installation, stable advantages of higher.The air tightness test loop can adopt the breath tester loop to realize, its expiration bellows chamber 4 is communicated with reduction valve 3 by gas admittance valve 1, and expiration bellows chamber 4 is communicated with storage bellows chamber 11 by expiration operation valve 5.The air tightness test loop is used for bubble-tight oneself inspection of system of the present invention self, opens earlier gas admittance valve 1 during work, and wait to reach and close gas admittance valve 1 when test is pressed, short time time-delay pressurize, the pressure running parameter is analyzed, relatively before and after gathering.Can be provided with multi-channel digital Displaying Meter 16 on the storage bellows chamber 11, can show test parameter in good time, it is little to have display error, and functions such as error correction, adjustment, digital filtering can effectively improve the system monitoring performance.
Referring to Fig. 2, the pressure transducer of signal pickup assembly is the test parameter that breath pressure sensor 15, inspiratory pressure sensor 17 and airtight pressure transducer 9 are gathered, by A/D converter 18 input computing machines 19, the output of computing machine 19 is through D/A converter 20, and the control corresponding solenoid valve is moved.The output of Computer Control Unit can be provided with demonstration, printing equipment 21.By the parameter that keyboard, mouse input device 22 can be provided with, revise or inquire about test, select test mode etc., be used to expand test specification, set the test parameter of different breathing relief valves.The inquiry test parameter comprises test, the controlled variable that inquiry is current or system has customized.By date, by vehicle, by inquiry test records etc. such as numberings.The software systems of computing machine 19 of the present invention are good to adopt 128 general-purpose version configuration softwares.But configuration software stable operation is in Windows95/98/NT operating system, integrate many powers such as animation display, flow process control, data acquisition, device control and output, network data transmission, engineering form, data and curve, and support numerous data acquisitions and output device, be widely used in various engineering fields such as Industry Control.Has visualized operation interface flexibly.Real-time, powerful, speed is fast, has good parallel processing capability.Perfect security mechanism and good maintainability are arranged.Has real-time data base.Support multiple hardwares equipment.Can control complicated operational scheme easily.Have abundant multimedia interface design and object elements storehouse.Easy and simple to handle, be easy to learn and use, be a kind of Industry Control supervisory system of highly-specialised.
Claims (10)
1. the automatic test approach of a performance of breathing relief valve, it is characterized in that: its performing step comprises:
[1] interface with breathing relief valve to be measured is connected with the interface of test air-channel system;
[2] determine category of test: category of test comprises breath tester, air-breathing test and air tightness test;
[3] select test mode: test mode comprises full-automatic testing and individual event test, selects full-automatic testing or individual event test by Computer Control Unit; Described full-automatic testing comprises breath tester, air-breathing test and air tightness test, and described individual event test is one of breath tester, air-breathing test or air tightness test item;
[4] pressure parameter that sets up standard: with expiration normal pressure parameter, air-breathing normal pressure parameter and impermeability normal pressure parameter input Computer Control Unit;
[5] collecting test parameter:
[5.1] gather the breath tester parameter:
[5.1.1] opens the breath tester gas circuit, pressurized air is imported the expiration bellows chamber (4) of test air-channel system by gas admittance valve (1), behind expiration bellows chamber (4) pressure buffer, enter storage bellows chamber (11), be communicated with the interface of breathing relief valve to be measured (12) by storage bellows chamber (11) again; Gather the breath tester pressure parameter by the breath pressure sensor (15) that is arranged on the storage bellows chamber (11);
[5.1.2] compares breath tester pressure parameter and expiration normal pressure parameter by Computer Control Unit, obtains test result;
[5.2] gather air-breathing test parameter:
[5.2.1] opens air-breathing test gas circuit, starts vacuum pump (8), and vacuum pump (8) is communicated with storage bellows chamber (11) by air-breathing bellows chamber (7), is communicated with breathing relief valve to be measured (12) interface by storage bellows chamber (11) again; Gather air-breathing test pressure parameter by the breath pressure sensor (15) that is arranged on the storage bellows chamber (11);
[5.2.2] compares air-breathing test pressure parameter and air-breathing normal pressure parameter by Computer Control Unit, obtains test result;
[5.3] gather the air tightness test parameter:
[5.3.1] opens the air tightness test gas circuit, and air is imported the expiration bellows chamber (4) of testing air-channel system by gas admittance valve (1), enters storage bellows chamber (11) behind expiration bellows chamber (4) pressure buffer; Close the air tightness test gas circuit, gather the air tightness test pressure parameter by the impermeability pressure transducer (9) that is arranged on the storage bellows chamber (11);
[5.3.2] compares air tightness test pressure parameter and impermeability normal pressure parameter by Computer Control Unit, obtains test result;
[6] when test result does not meet standard, carry out data backup, data derivation, end test; When the test result conformance with standard, carry out data backup and/or data and derive, finish test or continue the follow-up test program.
2. the automatic test approach of performance of breathing relief valve according to claim 1 is characterized in that: described collecting test parameter is to control actuating unit by Computer Control Unit to realize.
3. the automatic test approach of performance of breathing relief valve according to claim 1 and 2 is characterized in that: described data derive the numeral that comprises the collecting test parameter and show interface real-time pressure curve display or printing.
4. the automatic test approach of performance of breathing relief valve according to claim 3, it is characterized in that: described performing step comprises: authentication: will comprise the user profile input Computer Control Unit of user name, user cipher, by Computer Control Unit demonstration validation user right.
5. a device of realizing the automatic test approach of the described performance of breathing relief valve of claim 1 comprises proving installation and control device, it is characterized in that: described proving installation comprises test air-channel system and valve seat clamp device; Described test air-channel system comprises breath tester loop and air-breathing test loop; Described breath tester loop comprises the expiration bellows chamber (4) that is communicated with by gas path pipe with gas admittance valve (1), be arranged at expiration bellows chamber (4) and be communicated with reduction valve (3) on the gas path pipe with gas admittance valve (1), the storage bellows chamber (11) that is communicated with by gas path pipe with expiration bellows chamber (4), be arranged at expiration bellows chamber (4) and be communicated with expiration operation valve (5) on the gas path pipe with storage bellows chamber (11), described storage bellows chamber (11) is provided with the interface that is communicated with the valve pocket of breathing relief valve to be measured (12); Described air-breathing test loop comprises vacuum pump (8), the air-breathing bellows chamber (7) that is communicated with by gas path pipe with vacuum pump (8), described air-breathing bellows chamber (7) is communicated with storage bellows chamber (11) by gas path pipe, and described air-breathing bellows chamber (7) is provided with suction control valve (6) with the gas path pipe that storage bellows chamber (11) is communicated with; Described valve seat clamp device is made of clamp system that grips breathing relief valve to be measured (12) and the operating-controlling mechanism of controlling clamp system; Described control device comprises Computer Control Unit, is connected to the signal pickup assembly of Computer Control Unit input end, is connected to the actuating unit of Computer Control Unit output terminal; Described Computer Control Unit comprises computing machine (19), is connected to the A/D converter (18) of described computing machine (19) input end, is connected to the D/A converter (20) of described computing machine (19) output terminal; Described signal pickup assembly is made of pressure transducer, and the output terminal of described pressure transducer is connected to the input end of A/D converter (18); Described actuating unit comprises expiration operation valve (5) and suction control valve (6), and described expiration operation valve (5) is the solenoid valve that is connected with D/A converter (20) output terminal with suction control valve (6); Described pressure transducer comprises breath pressure sensor (15) and inspiratory pressure sensor (17), and described breath pressure sensor (15) and inspiratory pressure sensor (17) all are arranged on the storage bellows chamber (11).
6. the automatic testing equipment of performance of breathing relief valve according to claim 5, it is characterized in that: the clamp system of described valve seat clamp device is corner reservoir (13), the reversal valve (2) that is communicated with corner reservoir (13) by two gas path pipes; Described reversal valve (2) is communicated with gas admittance valve (1) by gas path pipe; Described storage bellows chamber (11) is provided with vent valve (10).
7. according to the automatic testing equipment of claim 5 or 6 described performance of breathing relief valve, it is characterized in that: described test air-channel system comprises the air tightness test loop; Described air tightness test loop comprises the expiration bellows chamber (4) that is communicated with by gas path pipe with gas admittance valve 1, be arranged at expiration bellows chamber (4) and be communicated with reduction valve (3) on the gas path pipe with gas admittance valve (1), with expiration bellows chamber (4) by the storage bellows chamber (11) that gas path pipe is communicated with, be arranged at expiration bellows chamber (4) and be communicated with expiration operation valve (5) on the gas path pipe with storage bellows chamber (11); Described pressure transducer comprises airtight pressure transducer (9), and this airtight pressure transducer (9) is arranged on the storage bellows chamber (11).
8. the automatic testing equipment of performance of breathing relief valve according to claim 7, it is characterized in that: described airtight pressure transducer (9) is a diffusion silicon pressure sensor; Described breath pressure sensor (15) and inspiratory pressure sensor (17) are diffusion silicon pressure sensor.
9. the automatic testing equipment of performance of breathing relief valve according to claim 8, it is characterized in that: described storage bellows chamber (11) is provided with multi-channel digital Displaying Meter (16).
10. the automatic testing equipment of performance of breathing relief valve according to claim 9, it is characterized in that: described Computer Control Unit comprises demonstration and the printing equipment (21) that is arranged at computing machine (19) output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101049519A CN100516815C (en) | 2006-11-23 | 2006-11-23 | Automatic testing method and apparatus for performance of breathing relief valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101049519A CN100516815C (en) | 2006-11-23 | 2006-11-23 | Automatic testing method and apparatus for performance of breathing relief valve |
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| CN1963436A CN1963436A (en) | 2007-05-16 |
| CN100516815C true CN100516815C (en) | 2009-07-22 |
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| CNB2006101049519A Expired - Fee Related CN100516815C (en) | 2006-11-23 | 2006-11-23 | Automatic testing method and apparatus for performance of breathing relief valve |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266632A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Self-checking method and system for safety valve and anesthesia machine |
| CN103900803A (en) * | 2012-12-26 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Machine-controlled safety valve detection method and device |
| CN103439095A (en) * | 2013-08-07 | 2013-12-11 | 苏州凯虹高分子科技有限公司 | Method and device for automatically testing valve pressure of cell safety valve in open state and in closed state |
| CN103808471B (en) * | 2013-12-10 | 2016-03-23 | 中煤科工集团重庆研究院有限公司 | Intelligent check meter for respirator |
| CN104122084B (en) * | 2014-08-07 | 2016-12-21 | 珠海格力电器股份有限公司 | Detection device and method for electronic expansion valve |
| CN112360843A (en) * | 2020-11-27 | 2021-02-12 | 上海沪东造船油嘴油泵有限公司 | Oil return pressure control valve testing method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Owner name: XI'AN RAIL TRANSPORTATION EQUIPMENT LIMITED LIABI Free format text: FORMER OWNER: XIAN AUTOMOBILE FACTORY, CHINA BEICHE GROUP Effective date: 20080606 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20080606 Address after: Postcode of Xi'an rail transportation equipment Co., Ltd., three Town, Shaanxi City, Xi'an Province, China: 710086 Applicant after: Xi'an Rail Tank Traffic Equipment Co., Ltd. Address before: Xi'an vehicle factory, three Qiao Town, Shaanxi City, Xi'an Province, China Code: 710086 Applicant before: China North Locomotive and Rolling Stock Xi'an Rolling Stock Works |
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Three Town Weiyang District 710086 Shaanxi city of Xi'an Province Patentee after: CRRC XI'AN CO., LTD. Address before: 710086 Xi'an City, Shaanxi Province, the town of Xi'an Rail Transit Equipment Co., Ltd., three Patentee before: Xi'an Rail Tank Traffic Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20201123 |