CN103954440A - Safety valve fatigue life testing system and method - Google Patents
Safety valve fatigue life testing system and method Download PDFInfo
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- CN103954440A CN103954440A CN201410163473.3A CN201410163473A CN103954440A CN 103954440 A CN103954440 A CN 103954440A CN 201410163473 A CN201410163473 A CN 201410163473A CN 103954440 A CN103954440 A CN 103954440A
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Abstract
The invention relates to a safety valve fatigue life testing system and method. The safety valve fatigue life testing system comprises an air source, a safety valve, a needle valve, a first electromagnetic valve, a counter, a first relay, a second electromagnetic valve, a pressure flow meter, a computer and a safety valve to be tested. The air source is sequentially connected with the needle valve, the first electromagnetic valve and the pressure flow meter through pipelines, the pipelines are divided into two ways behind the pressure flow meter, one way of pipeline is connected with the second electromagnetic valve, and the other way of pipeline is connected with the safety valve to be tested. The safety valve is mounted on a branch tube of the air source and the needle valve, and the first electromagnetic valve is sequentially connected with the counter, the first relay and the second electromagnetic valve through wires. According to the safety valve fatigue life testing system and method, the electromagnetic valves are controlled to be turned on and off through a time relay, the fatigue life of the safety valve to be tested can be tested within a short time, and the safety valve fatigue life testing system and method are simple, easy to achieve, and high in efficiency.
Description
Technical field
The present invention relates to a kind of safety valve test macro fatigue lifetime and method of testing.
Background technology
Safety valve is a kind of pressure vessel safety protection valve, is generally installed on the equipment or pipeline of pressure vessel systems.It is less than under design pressure in normally off at pressure; pressure medium in equipment or pipeline raises while surpassing permissible value; can automatically open; by discharge medium outside system, prevent that the pressure medium in pipeline or equipment from surpassing specified value; thereby protection e-quipment and pipe is normally worked; prevent accident, reduce the loss.Safety valve belongs to autovalve class, is mainly used on boiler, pressure vessel and pipeline, and controlled pressure is no more than setting, and personal safety and equipment have been moved to important protective effect.
By consulting periodical, article is numbered 1000-0682(2012) 05-0016-03 is known, and safety valve is one of boiler three large safety attachments, is a kind of important safe pressure relief device.For many years, country has put into effect multi-section technical specification of security and standard in order to strengthen management, and the aspects such as the design of safety valve, manufacture, installation, verification and maintenance have all been proposed to strict requirement, but the present situation of safety valve also has many unsatisfactory places.Situation to some used safety valve testings, one time verification qualification rate only has fifty percent left and right.Safety valve serviceable life is the basic demand to product quality.Yet as domestic consumer, can not supervise the production of product, can not overhaul.Method the most simple for domestic consumer is passed through data review exactly.At present, the manufacturing management of country to safety valve, what carry out is market access rule, and the manufacturer of safety valve must obtain corresponding < < special equipment manufacturing license > >.
At present, the method majority of safety valve detection fatigue lifetime is applied in commercial production, and actually rare for the detection method of domestic consumer and laboratory study aspect.For this respect, we have invented test macro and the method for testing of safety valve fatigue lifetime of simple and efficient.Whether this test macro and method of testing are applied in industrial detection, not only can before batch production, the performance to safety valve test, also can check the safety valve of having produced to meet the demands fatigue lifetime; In addition, can also be applied to laboratory to the safety valve research of fatigue lifetime.
Summary of the invention
The defect existing for prior art, the object of this invention is to provide a kind of safety valve test macro fatigue lifetime and method of testing, the characteristic such as have that test specification is wide, reliability is high and method of testing is simple.
For achieving the above object, design of the present invention is:
Safety valve is in closed condition when being less than design pressure, and when the pressure in pipeline is increased to design pressure, safety valve can be opened automatically, and discharge medium outside system, with the normal operation of protection system; When the pressure in pipeline is less than design pressure, safety valve can cut out automatically.This characteristic based on safety valve, test macro of the present invention should at least comprise a source of the gas input channel and a gas discharge channel, realizes the test to safety valve to be measured.Test to safety valve fatigue lifetime comprises two aspects: the one, and safety valve to be measured is is constantly opened and closed, until safety valve damages, by the number of times of test, determine the fatigue lifetime of safety valve; The 2nd, set in advance the number of times that safety valve to be measured need to be tested, after testing time completes, judge whether safety valve is damaged, to determine whether safety valve meets the demands.So test macro of the present invention must can be realized the repeated test to safety valve to be measured.
According to foregoing invention design, the present invention is achieved through the following technical solutions:
Safety valve test macro fatigue lifetime, comprises source of the gas, safety valve, needle-valve, the first solenoid valve, counter, the first relay, the second solenoid valve, differential pressure flow meter, computing machine and safety valve to be measured; Described source of the gas connects needle-valve, the first solenoid valve and differential pressure flow meter successively by pipeline, and after differential pressure flow meter, pipeline is divided into two-way, and a road pipeline connects the second solenoid valve, and another road pipeline connects safety valve to be measured; Described safety valve is arranged on the arm of source of the gas and needle-valve, and described the first solenoid valve is by wire successively linkage counter, the first relay, and the second solenoid valve.
Further, also comprise the first ball valve, the second ball valve and the 3rd ball valve; After the first solenoid valve, pipeline is divided into two-way, and a road pipeline connects the first ball valve and differential pressure flow meter successively, and another road pipeline is installed the second ball valve, has arm to connect two-way pipeline between differential pressure flow meter and safety valve to be measured, and the 3rd ball valve is installed on arm.
Further, also comprise the second relay, described the first relay is by wire linkage counter, and described the second relay connects the second solenoid valve by wire.
A safety valve method for testing fatigue life, comprises the following steps:
A. according to the test parameter requirement of safety valve to be measured, bleed pressure is set, and finely tunes bleed pressure to meet the required pressure requirement of test by needle-valve;
B., the timing of the first relay and the second relay is set, the first solenoid valve and the second solenoid valve are carried out to break-make control, and opening pressure flowmeter;
C. open the safety-valve and the first solenoid valve, close the second solenoid valve simultaneously, air-flow, through the first solenoid valve and differential pressure flow meter, arrives safety valve to be measured, starts safety valve to be measured to test;
D. close the first solenoid valve, open the second solenoid valve simultaneously, make safety valve to be measured return to initial state, realize period measuring one time;
E. by differential pressure flow meter, determine pressure and the fluctuations in discharge of safety valve to be measured in each cycle, record and be presented on differential pressure flow meter display screen.
F. Control the first solenoid valve and the second solenoid valve constantly open and close, to safety valve repeated test to be measured; Verify whether safety valve to be measured meets the requirement of fatigue lifetime, or test the fatigue lifetime of safety valve to be measured.
Compared with prior art, the present invention has following outstanding substantive distinguishing features and significant advantage:
The present invention controls the opening and closing of solenoid valve by the time relay, can in more in short-term, realize the safety valve to be measured test of fatigue lifetime, not only simple, and efficiency is high.Considering that under the not easily changeable prerequisite of test macro pipeline, the present invention controls different passages by ball valve, when a certain test channel is blocked or had other problems, can select another passage, greatly improving the serviceable life of test macro.
Accompanying drawing explanation
Fig. 1 is system architecture principle schematic of the present invention.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Fig. 3 is the structural representation of the embodiment of the present invention 3.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
embodiment 1
As shown in Figure 1, a kind of safety valve test macro fatigue lifetime, comprises source of the gas 1, safety valve 2, needle-valve 3, the first solenoid valve 4, counter 5, the first relay 6, the second solenoid valve 7, differential pressure flow meter 11, computing machine 12 and safety valve to be measured 13; Described source of the gas 1 connects needle-valve 3, the first solenoid valve 4 and differential pressure flow meter 11 successively by pipeline, and after differential pressure flow meter 11, pipeline is divided into two-way, and a road pipeline connects the second solenoid valve 7, and another road pipeline connects safety valve 13 to be measured; Described safety valve 2 is arranged on the arm of source of the gas 1 and needle-valve 3, and described the first solenoid valve 4 is by wire successively linkage counter 5, the first relay 6, and the second solenoid valve 7.
embodiment 2
As shown in Figure 2, the present embodiment is substantially the same manner as Example 1, and difference is, also comprises the first ball valve 8, the second ball valves 9 and the 3rd ball valve 10; After the first solenoid valve 4, pipeline is divided into two-way, one road pipeline connects the first ball valve 8 and differential pressure flow meter 11 successively, another road pipeline is installed the second ball valve 9, has arm to connect two-way pipeline between differential pressure flow meter 11 and safety valve to be measured 13, and the 3rd ball valve 10 is installed on arm.
embodiment 3
As shown in Figure 3, the present embodiment is substantially the same manner as Example 1, and difference is, also comprises the second relay 14, and described the first relay 6 is by wire linkage counter 5, and described the second relay 14 connects the second solenoid valve 7 by wire.
A safety valve method for testing fatigue life, comprises the following steps:
A. according to the test parameter requirement of safety valve 13 to be measured, source of the gas 1 pressure is set, and to meet, tests required pressure requirement by needle-valve 3 fine setting source of the gas 1 pressure;
B., the timing of the first relay 6 and the second relay 14 is set, the first solenoid valve 4 and the second solenoid valve 7 are carried out to break-make control, and opening pressure flowmeter 11;
C. 2 and first solenoid valve 4 that opens the safety-valve cuts out the second solenoid valve 7 simultaneously, and air-flow, through the first solenoid valve 4 and differential pressure flow meter 11, arrives safety valve 13 to be measured, starts safety valve 13 to be measured to test;
D. close the first solenoid valve 4, open the second solenoid valve 7 simultaneously, make safety valve 13 to be measured return to initial state, realize period measuring one time;
E. by differential pressure flow meter 11, determine pressure and the fluctuations in discharge of safety valve to be measured in 13 each cycle, record and be presented on differential pressure flow meter 11 display screens.
F. Control the first solenoid valve 4 and the second solenoid valve 7 constantly open and close, to safety valve 13 repeated tests to be measured; Verify whether safety valve 13 to be measured meets the requirement of fatigue lifetime, or test the fatigue lifetime of safety valve 13 to be measured.
Claims (4)
1. safety valve test macro fatigue lifetime, it is characterized in that, comprise source of the gas (1), safety valve (2), needle-valve (3), the first solenoid valve (4), counter (5), the first relay (6), the second solenoid valve (7), differential pressure flow meter (11), computing machine (12) and safety valve to be measured (13); Described source of the gas (1) connects needle-valve (3), the first solenoid valve (4) and differential pressure flow meter (11) successively by pipeline, differential pressure flow meter (11) afterwards pipeline be divided into two-way, one road pipeline connects the second solenoid valve (7), and another road pipeline connects safety valve to be measured (13); Described safety valve (2) is arranged on the arm of source of the gas (1) and needle-valve (3), and described the first solenoid valve (4) is by wire successively linkage counter (5), the first relay (6), and the second solenoid valve (7).
2. safety valve test macro fatigue lifetime according to claim 1, is characterized in that, also comprises the first ball valve (8), the second ball valve (9) and the 3rd ball valve (10); The first solenoid valve (4) afterwards pipeline be divided into two-way, one road pipeline connects the first ball valve (8) and differential pressure flow meter (11) successively, another road pipeline is installed the second ball valve (9), between differential pressure flow meter (11) and safety valve to be measured (13), there is arm to connect two-way pipeline, the 3rd ball valve (10) is installed on arm.
3. safety valve test macro fatigue lifetime according to claim 1, it is characterized in that, also comprise the second relay (14), described the first relay (6) is by wire linkage counter (5), and described the second relay (14) connects the second solenoid valve (7) by wire.
4. a safety valve method for testing fatigue life, is characterized in that, comprises the following steps:
A. according to the test parameter requirement of safety valve to be measured (13), source of the gas (1) pressure is set, and to meet, tests required pressure requirement by needle-valve (3) fine setting source of the gas (1) pressure;
B., the timing of the first relay (6) and the second relay (14) is set, the first solenoid valve (4) and the second solenoid valve (7) are carried out to break-make control, and opening pressure flowmeter (11);
C. open the safety-valve (2) and the first solenoid valve (4), close the second solenoid valve (7) simultaneously, air-flow, through the first solenoid valve (4) and differential pressure flow meter (11), arrives safety valve to be measured (13), starts safety valve to be measured (13) to test;
D. close the first solenoid valve (4), open the second solenoid valve (7) simultaneously, make safety valve to be measured (13) return to initial state, realize period measuring one time;
E. by differential pressure flow meter (11), determine pressure and the fluctuations in discharge in each cycle of safety valve to be measured (13), record and be presented on differential pressure flow meter (11) display screen;
F. Control the first solenoid valve (4) and the second solenoid valve (7) constantly open and close, to safety valve to be measured (13) repeated test; Verify whether safety valve to be measured (13) meets the requirement of fatigue lifetime, or test the fatigue lifetime of safety valve to be measured (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410163473.3A CN103954440A (en) | 2014-04-22 | 2014-04-22 | Safety valve fatigue life testing system and method |
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| CN201410163473.3A CN103954440A (en) | 2014-04-22 | 2014-04-22 | Safety valve fatigue life testing system and method |
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| CN103954440A true CN103954440A (en) | 2014-07-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910831A (en) * | 2016-03-01 | 2016-08-31 | 西安航空动力股份有限公司 | Air unidirectional valve fault improvement measure effectiveness test method and verification method |
| CN112683566A (en) * | 2020-12-31 | 2021-04-20 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
| CN113447289A (en) * | 2021-05-21 | 2021-09-28 | 河北省产品质量监督检验研究院 | Using method of national physical fitness test equipment durability detection system |
| CN113447288A (en) * | 2021-05-21 | 2021-09-28 | 河北省产品质量监督检验研究院 | National physical health test equipment durability detection system |
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| CN202533247U (en) * | 2012-03-27 | 2012-11-14 | 深圳市亿威仕流体控制有限公司 | Apparatus for testing durability of cylinder valve |
| CN203083811U (en) * | 2012-12-19 | 2013-07-24 | 卓旦春 | Valve service life testing system |
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| JP2007078143A (en) * | 2005-09-16 | 2007-03-29 | Sumitomo Chemical Co Ltd | Anomaly detection system of selector-valve and selector-valve test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910831A (en) * | 2016-03-01 | 2016-08-31 | 西安航空动力股份有限公司 | Air unidirectional valve fault improvement measure effectiveness test method and verification method |
| CN105910831B (en) * | 2016-03-01 | 2018-06-22 | 西安航空动力股份有限公司 | Air check valve of position failure corrective measure efficiency assay method and verification method |
| CN112683566A (en) * | 2020-12-31 | 2021-04-20 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
| CN112683566B (en) * | 2020-12-31 | 2023-06-23 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
| CN113447289A (en) * | 2021-05-21 | 2021-09-28 | 河北省产品质量监督检验研究院 | Using method of national physical fitness test equipment durability detection system |
| CN113447288A (en) * | 2021-05-21 | 2021-09-28 | 河北省产品质量监督检验研究院 | National physical health test equipment durability detection system |
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Application publication date: 20140730 |