CN210774651U - Gas fatigue test equipment for gas cylinder - Google Patents
Gas fatigue test equipment for gas cylinder Download PDFInfo
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- CN210774651U CN210774651U CN201921858838.9U CN201921858838U CN210774651U CN 210774651 U CN210774651 U CN 210774651U CN 201921858838 U CN201921858838 U CN 201921858838U CN 210774651 U CN210774651 U CN 210774651U
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Abstract
The utility model discloses a gaseous fatigue test equipment of gas cylinder, including the liquid nitrogen storage tank, be connected with the vaporizer on the liquid nitrogen storage tank, be connected with diaphragm compressor on the vaporizer, the last buffering gas cylinder group that is connected with of diaphragm compressor, be connected with fatigue control unit on the buffering gas cylinder group, the last measured gas cylinder that is connected with of fatigue control unit, fatigue control unit includes the electric proportional valve, the electric proportional valve is connected with gas accuse relief pressure valve, gas accuse relief pressure valve is connected with a plurality of pneumatic valves, be connected with the stop valve on the pneumatic valve, still be provided with the PID controller on the fatigue control unit, the PID controller is used for control the electric proportional valve with opening and closing range of gas accuse relief pressure valve.
Description
Technical Field
The utility model relates to a gaseous fatigue test technical field particularly, relates to a gaseous fatigue test equipment of gas cylinder.
Background
The continuous progress of human science and technology civilization can increase the reliability and the requirement of products, and the high-pressure gas cylinder is one of special equipment, and the data of the processing quality, the service performance, the service life and the like also need a more real and reliable test method.
At present, most of testing media of fatigue equipment in domestic markets are hydraulic pressure and water pressure, so that the following problems can be caused: (1) the high-pressure gas cylinder really uses a medium as gas, and the gas cylinder is tested by adopting hydraulic and hydraulic fatigue equipment, so that the real application performance of the high-pressure gas cylinder cannot be completely and objectively reflected; (2) the gas cylinder is required to be tested by combining with relevant domestic gas cylinder test standards, so that not only a fatigue test but also an airtight test are required, if hydraulic and hydrostatic fatigue equipment is adopted, a set of high-pressure airtight equipment needs to be purchased, the cost is directly increased, and more manpower is invested in subsequent maintenance and operation; (3) the gas cylinder that aerospace, war industry mechanism used mostly is high-purity gas and uses, can not have liquid class impurity to pollute, and after the experiment was done to traditional equipment, the gas cylinder inner wall need wash and sweep, and clean effect can not be controlled completely, and inside gas has contaminated risk.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a gaseous fatigue test equipment of gas cylinder can overcome prior art's the aforesaid not enough.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a gaseous fatigue test equipment of gas cylinder, includes the liquid nitrogen storage tank, be connected with the vaporizer on the liquid nitrogen storage tank, be connected with diaphragm compressor on the vaporizer, the last a plurality of buffering gas cylinder groups that are connected with of diaphragm compressor, be connected with fatigue control unit on the buffering gas cylinder group, be connected with the gas cylinder under test on the fatigue control unit, fatigue control unit includes a plurality of electric proportional valve, electric proportional valve is connected with gas accuse relief pressure valve, gas accuse relief pressure valve is connected with a plurality of pneumatic valves, be connected with the stop valve on the pneumatic valve, still be provided with the PID controller on the fatigue control unit, the PID controller is used for control electric proportional valve with opening and closing range of gas accuse relief pressure valve.
Further, the number of the electric proportional valves is 2.
Further, the number of the pneumatic valves is 6.
Furthermore, the fatigue control unit is also provided with a filtering and pressure regulating valve, a plurality of pressure transmitters, a plurality of electromagnetic valves, a pressure relief valve, a back pressure valve, a pressure gauge, an air release port, a recovered air interface and a recovered air release port.
Wherein, the quantity of pressure transmitter is 4.
Wherein, the number of the electromagnetic valves is 7.
Further, the number of the air bottles in the buffer air bottle group is 3.
Wherein the number of the buffer gas bottle groups (4) is 2.
The utility model has the advantages that: the utility model discloses the test method is more scientific, the use operating mode under the gas state medium of gas cylinder of complete simulation, and the test data is true, reliable, need not worry that there is impurity pollution medium and gas cylinder under survey; the system can set test pressure, pulse frequency, test period and the like through remote control, and can boost and reduce pressure according to preset values, thereby realizing unmanned intervention and automatically realizing the process flow of each stage; the measurement and control software developed professionally is used, the requirements of different test pieces or products on different pressure levels are met, an interface provides an operation prompt, the operation is safer, simpler and more convenient, data can be recorded and stored, and a client is helped to realize data analysis; the pressure control precision is high, the pressure covering range is wide, the fatigue test and the air tightness test are both considered, and the multipurpose application can be realized; the reliability is high, and maintainability is strong, and key position collocation special valve, unique design guarantee life has improved maintenance efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural connection diagram of a gas cylinder gas fatigue testing device according to an embodiment of the present invention;
fig. 2 is a flow chart of a fatigue control unit of a gas cylinder gas fatigue testing device according to an embodiment of the present invention.
In the figure:
1. a liquid nitrogen storage tank; 2. a vaporizer; 3. a diaphragm compressor; 4. a buffer gas cylinder group; 5. a fatigue control unit; 6. a gas bottle to be detected;
501. an electric proportional valve; 502. a pneumatic control pressure reducing valve; 503. a stop valve; 504. a pneumatic valve; 505. filtering the pressure regulating valve; 506. a pressure transmitter; 507. an electromagnetic valve; 508. a pressure relief valve; 509. a back pressure valve; 510. a pressure gauge; 511. an air release port; 512. a gas recovery interface; 513. and recovering the air release port.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1-2, according to the embodiment of the utility model provides a gaseous fatigue test equipment of gas cylinder, including liquid nitrogen storage tank 1, be connected with vaporizer 2 on the liquid nitrogen storage tank 1, be connected with diaphragm compressor 3 on the vaporizer 2, be connected with a plurality of buffer gas cylinder group 4 on the diaphragm compressor 3, be connected with fatigue control unit 5 on the buffer gas cylinder group 4, be connected with on the fatigue control unit 5 by gas cylinder 6, fatigue control unit 5 includes a plurality of electric proportional valve 501, electric proportional valve 501 is connected with gas accuse relief pressure valve 502, gas accuse relief pressure valve 502 is connected with a plurality of pneumatic valves 504, be connected with stop valve 503 on the pneumatic valve 504, still be provided with the PID controller on the fatigue control unit 5, the PID controller is used for controlling opening and closing range of electric proportional valve 501 and gas accuse relief pressure valve 502.
In one embodiment, the number of electric proportional valves 501 is 2.
In one embodiment, the number of pneumatic valves 504 is 6.
In an embodiment, the fatigue control unit 5 is further provided with a filtering pressure regulating valve 505, a plurality of pressure transmitters 506, a plurality of solenoid valves 507, a pressure relief valve 508, a back pressure valve 509, a pressure gauge 510, a relief port 511, a recovery gas interface 512 and a recovery relief port 513.
Preferably, the number of pressure transmitters 506 is 4.
Preferably, the number of the solenoid valves 507 is 7.
In one embodiment, the number of cylinders in the buffer cylinder group 4 is 3.
Preferably, the number of the buffer cylinder groups 4 is 2.
In one embodiment, the core equipment is clean and oil-free, the pipeline and the valve are made of 316 polished materials, and the equipment is clean and corrosion-resistant when contacting with a test medium.
In one embodiment, the gas recovery efficiency is greater than or equal to 60%.
In one embodiment, the system working medium is high purity nitrogen or purified helium.
In one embodiment, the system design pressure is 45MPa and the fatigue test pressure is 35 MPa.
In one embodiment, the nitrogen output impurity of the system is less than or equal to 2 μ.
In one embodiment, the system has an inflation rate of 1 to 5MPa/min and an deflation rate of 5 to 8 MPa/min.
In one embodiment, the system test cylinder volume is 130L or less.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
When specifically using, according to a gaseous fatigue test equipment of gas cylinder, pour into required test medium into to the liquid nitrogen container, liquid nitrogen promptly, through air bath formula vaporizer, turn into gaseous nitrogen gas, pressure is about 0.7MPa, again by diaphragm type compressor pressure boost to 45MPa after get into high-pressure buffer bottle, stabilize behind the pressure by fatigue control unit with to being surveyed the gas cylinder work piece go on step up and the fatigue test who steps down. The buffer bottle is configured three, and according to the high-low grade three of high-medium-low of pressure, according to air pressure height automatic selection in the fatigue test pressure boost process, choose the low pressure air supply for use when pressure is low, choose the high pressure air supply for use when pressure is high, so both practiced thrift the energy consumption, guarantee simultaneously to aerify steadily. In the fatigue test discharge process, a principle of high first and low second is selected, and a part of nitrogen can be recycled, so that the design is adopted, the gas consumption is saved, the nitrogen demand is reduced, and the power consumption of the compressor is reduced. The fatigue control unit is a core unit of the whole set of equipment and mainly controls the inflation and deflation rates of the measured gas cylinder. In the inflation process, high-pressure test gas is introduced firstly, a pneumatic valve is arranged at a gas input pipeline, the pressure in the gas cylinder to be tested is generated and controlled to be connected with a signal command sent by a control console through an electric proportional valve, certain pressure control gas is output to act on a pneumatic control pressure reducing valve, a certain pressure is generated at the outlet of the valve, the pressure is fed back to the control console in real time through a pressure transmitter to be collected and monitored remotely, and the high-pressure gas is conveyed to the gas cylinder to be tested through the pneumatic valve. In a pulse period, after the pressure in the tested gas cylinder reaches a test value, the gas enters a gas discharging process, the gas charging path valve recovers to an initial state, gas in the gas cylinder is conveyed towards the pneumatic valve, the pressure in the tested gas cylinder drops and is connected with a signal instruction sent by a control console through an electric proportional valve, a certain pressure is output to control a pneumatic control back pressure valve, the regulation and control of recovery pressure are realized, and the pneumatic valve is opened to recover the gas to a buffer gas cylinder group. When the residual gas pressure in the workpiece can not be recovered, the workpiece is emptied through the pneumatic valve. The system is also provided with a manual pressure relief valve, and manual pressure relief can be selected when a program and a pneumatic valve fail. In the fatigue control unit, pressure pulse regulation is mainly realized through an electric proportional valve and a pneumatic control pressure reducing valve, and the principle of the electric proportional valve is that gas output pressure in a certain proportion to an input electric signal is obtained by changing the input electric signal within a certain range, so that the change of the gas output pressure in proportion to the input electric signal is realized; the principle of the pneumatic control pressure reducing valve is that the downstream pressure of the outlet of the pressure regulating valve is controlled by adjusting the pressure of the air chamber, and the pressure of the air chamber only needs to be adjusted remotely to realize remote automatic control. The inflation and deflation processes of the fatigue test are realized through control software, and after relevant parameters are set, the system automatically acquires test data for storage, analysis and processing. The high-pressure valve configured by the fatigue control unit can bear pressure fatigue tests of not less than 50 ten thousand times, which is at least more than 3 times of that of a common valve; the valve sealing structure is unique, the V-shaped packing sealing structure is adopted, the valve rod has a self-compensation function, the valve rod is made of high-strength SUH660 high-strength stainless steel materials, the hardness is higher than that of a common valve rod of the valve, the smoothness of the valve rod after precision machining is higher, the abrasion to sealing is reduced, the service life of the valve is prolonged, the valve body is of a replaceable base structure, the internal structural part of the valve is overhauled or replaced, a nut at the bottom of the valve body is directly loosened, the maintenance efficiency is improved, the valve is designed into an independent valve seat, the size of the front side and the size of the rear side are consistent with the smoothness, after the valve is used for a long time, even if the valve seat is abraded, the sealing cannot be.
In summary, the utility model mainly controls the inflation and deflation rates of the tested gas cylinder by arranging the fatigue control unit, and controls the opening and closing range of the corresponding valve by remote PID control, thereby achieving the purpose of controlling the tested container to be boosted and depressurized according to the preset value; two groups of buffer gas bottle groups are arranged, so that the gas consumption can be greatly reduced; in the fatigue control unit, the pressure pulse regulation is realized through an electric proportional valve and a pneumatic control pressure reducing valve, and a high-pressure valve configured in the fatigue control unit can bear pressure fatigue tests not less than 50 ten thousand times, at least more than 3 times of that of a common valve, specially aiming at harsh occasions used for a long time; the inflation and deflation processes of the fatigue test are realized through control software, relevant parameters are set, and the system automatically acquires test data for storage, analysis and processing, so that the safety of the test is ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a gaseous fatigue test equipment of gas cylinder, includes liquid nitrogen storage tank (1), its characterized in that, be connected with vaporizer (2) on liquid nitrogen storage tank (1), be connected with diaphragm compressor (3) on vaporizer (2), be connected with a plurality of buffer gas cylinder group (4) on diaphragm compressor (3), be connected with fatigue control unit (5) on buffer gas cylinder group (4), be connected with on fatigue control unit (5) and be surveyed gas cylinder (6), fatigue control unit (5) include a plurality of electric proportional valve (501), electric proportional valve (501) are connected with gas accuse relief pressure valve (502), gas accuse relief pressure valve (502) are connected with a plurality of pneumatic valves (504), be connected with stop valve (503) on pneumatic valve (504), still be provided with the PID controller on fatigue control unit (5), the PID controller is used for control electric proportional valve (501) with opening and closing of gas accuse pressure relief pressure valve (502) open and close pneumatic valve (504) Amplitude.
2. A gas cylinder gas fatigue testing device according to claim 1, characterized in that the number of said electric proportional valves (501) is 2.
3. A gas cylinder gas fatigue testing device according to claim 1, characterized in that the number of pneumatic valves (504) is 6.
4. The gas bottle gas fatigue testing device according to claim 1, wherein the fatigue control unit (5) is further provided with a filtering pressure regulating valve (505), a plurality of pressure transmitters (506), a plurality of electromagnetic valves (507), a pressure release valve (508), a backpressure valve (509), a pressure gauge (510), a gas release port (511), a gas recovery interface (512) and a gas recovery release port (513).
5. A gas cylinder gas fatigue testing device according to claim 4, characterized in that the number of the pressure transmitters (506) is 4.
6. A gas cylinder gas fatigue testing device according to claim 4, characterized in that the number of the solenoid valves (507) is 7.
7. A gas cylinder gas fatigue testing apparatus according to claim 1, characterized in that the number of gas cylinders in the buffer gas cylinder group (4) is 3.
8. A gas cylinder gas fatigue testing apparatus according to claim 7, characterized in that the number of buffer gas cylinder groups (4) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858838.9U CN210774651U (en) | 2019-10-31 | 2019-10-31 | Gas fatigue test equipment for gas cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921858838.9U CN210774651U (en) | 2019-10-31 | 2019-10-31 | Gas fatigue test equipment for gas cylinder |
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| CN210774651U true CN210774651U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256259A (en) * | 2023-05-15 | 2023-06-13 | 江阴常春藤科技有限公司 | Method and system for testing hydraulic fatigue of gas cylinder in ultralow temperature environment |
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2019
- 2019-10-31 CN CN201921858838.9U patent/CN210774651U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256259A (en) * | 2023-05-15 | 2023-06-13 | 江阴常春藤科技有限公司 | Method and system for testing hydraulic fatigue of gas cylinder in ultralow temperature environment |
| CN116256259B (en) * | 2023-05-15 | 2023-08-04 | 江阴常春藤科技有限公司 | Method and system for testing hydraulic fatigue of gas cylinder in ultralow temperature environment |
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