CN105466788A - Low-temperature fatigue blasting test device and method for gas bottle - Google Patents
Low-temperature fatigue blasting test device and method for gas bottle Download PDFInfo
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- CN105466788A CN105466788A CN201610031540.5A CN201610031540A CN105466788A CN 105466788 A CN105466788 A CN 105466788A CN 201610031540 A CN201610031540 A CN 201610031540A CN 105466788 A CN105466788 A CN 105466788A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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Abstract
The invention relates to a low-temperature fatigue blasting test device and method for a gas bottle. The low-temperature fatigue blasting test device for the gas bottle comprises a gaseous nitrogen source for providing gaseous nitrogen, a liquid nitrogen source for providing liquid nitrogen, a buffering bottle and a liquid nitrogen heat-preservation storage tank with an upper cover at the upper end. The gaseous nitrogen source is communicated with the buffering bottle through a bottle valve, a first tee joint and a pipe. The liquid nitrogen source is communicated with the buffering bottle through the first tee joint and a pipe. The buffering bottle is connected with a second tee joint through a pipe. A low-temperature pressure sensor is connected with the second tee joint. One end of a nitrogen charging pipe is connected with the second tee joint, and the other end of the nitrogen charging pipe extends into the to-be-detected gas bottle. By means of the low-temperature fatigue blasting test device and method, a pressure container can be subjected to a fatigue test and a blasting test in the low-temperature (-196 DEG C) environment, and product quality can be accurately detected.
Description
Technical field
The invention relates to one and is applied in pressure vessel (gas cylinder) field, can to pressure vessel at low ambient temperatures (-196 DEG C) carry out the test unit of torture test and explosion bulge test.
Background technology
At present, need in some special fields to use low temperature cylinder, torture test and explosion bulge test is carried out under these gas cylinder fatigue behaviours, bursting property many employings room temperature environment, but with room temperature environment, fatigue behaviour and explosion bulge test are carried out to pressure vessel, under applying working condition, there is gap with pressure vessel, and can not verify whether pressure vessel occurs change at low ambient temperatures.Therefore, develop a kind of at low ambient temperatures to pressure vessel carry out fatigue behaviour, bursting property test be new problem urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to provide one and is applied in pressure vessel field, can to pressure vessel at low ambient temperatures (-196 DEG C) carry out the experimental provision of torture test and explosion bulge test.
The technical scheme that the invention adopts is: a kind of gas cylinder fatigue at low temperatures blasting experiment device, is provided with for providing the gaseous nitrogen source of gaseous nitrogen, being incubated storage tank for the liquid nitrogen providing the liquid nitrogen source of liquid nitrogen, surge flask and upper end to be provided with upper cover; Gaseous nitrogen source is communicated with surge flask with pipeline through cylinder valve, threeway I; Liquid nitrogen source is communicated with surge flask with pipeline through threeway I; Surge flask is connected with threeway II through pipeline; Low-temperature pressure sensor is connected with threeway II; Nitrogen blanketing valve one end is connected with threeway II, and the other end stretches in gas cylinder to be detected.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, described cylinder valve is made up of stop valve and pressure regulator valve.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, is provided with supercharge pump and stop valve II between gaseous nitrogen source and threeway I.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, is provided with stop valve III between liquid nitrogen source and threeway I.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, be provided with safety valve, safety valve is connected with threeway III, and threeway III is arranged on the pipeline between surge flask and threeway II.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, be provided with solenoid valve, solenoid valve is communicated with gas cylinder to be detected through pipeline.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, is provided with control system and camera, and the image pickup scope of camera corresponds to liquid nitrogen insulation storage tank; Control system is for controlling cylinder valve, supercharge pump, stop valve II, stop valve III; Camera is connected with control system with low-temperature pressure sensor.
Above-mentioned a kind of gas cylinder fatigue at low temperatures blasting experiment device, is provided with the bearing I supporting gas cylinder to be detected in liquid nitrogen insulation storage tank.
A kind of gas cylinder fatigue at low temperatures blasting experiment method, adopts above-mentioned experimental provision to comprise the steps:
1) gas cylinder to be detected is placed in liquid nitrogen insulation storage tank, the nitrogen blanketing valve one end be communicated with is stretched in gas cylinder to be detected, liquid nitrogen is incubated storage tank and is full of liquid nitrogen with surge flask;
2) explosion bulge test: close cylinder valve, open stop valve III, fill liquid nitrogen in gas cylinder to be detected, after reaching 0.15MPa, close stop valve III, open the stop valve I in cylinder valve, by gaseous nitrogen source to surge flask supercharging, and then give gas cylinder supercharging to be detected, after being pressurized to regulation burst pressure, close cylinder valve, observe gas cylinder to be detected;
3) torture test: open solenoid valve, by gas cylinder pressure release, open cylinder valve again, by gaseous nitrogen source to surge flask supercharging, and then give gas cylinder supercharging to be detected, after being pressurized to regulation burst pressure, close cylinder valve, observe gas cylinder to be detected, repeatedly carry out explosion bulge test to gas cylinder explosion, record times of fatigue.
Above-mentioned gas cylinder fatigue at low temperatures blasting experiment method, step 2) in, as the regulation burst pressure≤15MPa of gas cylinder, by the pressure regulator valve in adjustment cylinder valve to gas cylinder pressurising to be detected; As the regulation burst pressure >=15MPa of gas cylinder, open supercharge pump to gas cylinder pressurising to be detected.
The beneficial effect of the invention is:
1. the invention, gas cylinder to be detected is placed in the liquid nitrogen being full of liquid nitrogen and is incubated in storage tank, under can be implemented in low temperature environment (-196 DEG C), gas cylinder carries out explosion and torture test.
2. the invention, fatigue testing at low temperature, explosion bulge test apparatus structure safety, can control tired blasting system by control system.
3. the invention, can ensure that pressure vessel is tested at low ambient temperatures, and be substantially all liquid nitrogen in system, charge liquid proportion almost reaches 100%, and gasification ratio does not almost have.
4. the invention, adopts first to gas cylinder internal-filling liquid nitrogen, and then in gas cylinder, fills the method for gaseous nitrogen, carry out explosion bulge test.First, achieve gas cylinder inside and outside and be liquid nitrogen environment, ensure that gas cylinder is tested at low ambient temperatures.Secondly, at normal temperature environment, liquid nitrogen is filled to gas cylinder, need low temperature supercharge pump, and low temperature supercharge pump needs resistance to-196 DEG C of low temperature, require higher to supercharge pump environment for use, and be difficult to reach and be pressurized to high pressure; And first filling liquid nitrogen, warranty test workpiece is filled full, under reaching lower pressure, beats nitrogen by gas boosting pump, to liquid nitrogen supercharging in buffering linker, can realize cycle of higher pressure and burst pressure.3rd, direct use liquid nitrogen filling experiment workpiece, test pipeline is longer, even if carry out insulation process to pipeline, but also can there is part liquid nitrogen gasification, liquid nitrogen gasification, than being 1:696, causes testing equipment supercharging unstable, even instantaneously elevated pressures be can be pressurized to, test pipeline and testing equipment security risk increased.And first filling liquid nitrogen, warranty test workpiece is filled full, under reaching lower pressure, nitrogen is beaten by gas boosting pump, to liquid nitrogen supercharging in buffering linker, can realize cycle of higher pressure and burst pressure, reduce test pipeline and testing equipment risk, and the supercharging of gas boosting pump warranty test equipment is stablized.4th, economic benefit is obvious, can effectively reduce liquid nitrogen use amount, and gas boosting pump comparatively low temperature supercharge pump cheaper.
Accompanying drawing explanation
Fig. 1 is the structural representation of the invention gas cylinder fatigue at low temperatures blasting experiment device.
Embodiment
Embodiment 1 gas cylinder fatigue at low temperatures blasting experiment device
A gas cylinder fatigue at low temperatures blasting experiment device as shown in Figure 1, is incubated storage tank 1, control system 16 and camera 17 is formed by gaseous nitrogen source 15, liquid nitrogen source 9, surge flask 8, liquid nitrogen.
Gaseous nitrogen source 15 for providing gaseous nitrogen in gas cylinder 2 to be detected.
Liquid nitrogen source 9 for providing liquid nitrogen in gas cylinder 2 to be detected.
Surge flask 8 plays buffer action.
Liquid nitrogen insulation storage tank 1 upper end is provided with upper cover 3, and form airtight cavity during experiment, its inside is full of liquid nitrogen, with the low temperature environment of satisfied detection.Be provided with the bearing I 19 supporting gas cylinder 2 to be detected in liquid nitrogen insulation storage tank 1, described bearing I 19 is counterweight bearing.In order to ensure the stability of liquid nitrogen insulation storage tank 1, liquid nitrogen being incubated storage tank 1 and being arranged on bearing III 20.
Gaseous nitrogen source 15 is communicated with surge flask 8 with pipeline through cylinder valve 14, supercharge pump 13, stop valve II 12, threeway I 11 successively.Preferably, cylinder valve 14 is made up of stop valve I and pressure regulator valve.
Liquid nitrogen source 9 is communicated with surge flask 8 with pipeline through stop valve III 10, threeway I 11 successively.Preferably, be provided with two liquid nitrogen source 9 to be cascaded.
Threeway II 5 is connected with surge flask 8, low-temperature pressure sensor 6 and nitrogen blanketing valve 24 respectively.
Connecting pipe between surge flask 8 and threeway II 5 is provided with threeway III 7, safety valve 22 is connected with threeway III 7.Preferably, in order to ensure the stability of surge flask, surge flask is arranged on bearing II 21.
Nitrogen blanketing valve 24 one end is connected with threeway II 5, and the other end stretches in gas cylinder 2 to be detected.
Be provided with solenoid valve 4, solenoid valve 4 is communicated with gas cylinder 2 to be detected through pipeline.
Control system 16 is for Long-distance Control cylinder valve 14, supercharge pump 13, stop valve II 12 and stop valve III 10.
The image pickup scope of camera 17 corresponds to liquid nitrogen insulation storage tank 1; Camera 17 is connected with control system 16.
Embodiment 2 gas cylinder fatigue at low temperatures blasting experiment method
Adopt the gas cylinder fatigue at low temperatures blasting experiment device of embodiment 1, comprise the steps:
1) gas cylinder 2 to be detected is placed in liquid nitrogen insulation storage tank 1, nitrogen blanketing valve 24 one end be communicated with is stretched in gas cylinder 2 to be detected, liquid nitrogen is incubated storage tank 1 and is full of liquid nitrogen with surge flask 8.
2) explosion bulge test: close cylinder valve 14, open stop valve III 10, fill liquid nitrogen in gas cylinder 2 to be detected, after reaching 0.15MPa, close stop valve III 10, open the stop valve I in cylinder valve 14, give surge flask 8 supercharging by gaseous nitrogen source 15, and then give gas cylinder 2 to be detected supercharging, after being pressurized to regulation burst pressure, close cylinder valve 14, observe gas cylinder 2 to be detected.
Regulation burst pressure refers to the standard that finished product gas cylinder dispatches from the factory, i.e. the gas cylinder maximum pressure that can tolerate.It is boundary that burst pressure is tested with 15MPa by this experimental provision, as the regulation burst pressure≤15MPa of gas cylinder, in experimentation, does not need to start supercharge pump 13, only needs by the pressure regulator valve in adjustment cylinder valve 14 to gas cylinder 2 to be detected pressurising.As the regulation burst pressure >=15MPa of gas cylinder, need to open supercharge pump 13 to gas cylinder 2 to be detected pressurising.
Explosion bulge test, in experimentation, reaches regulation burst pressure when pressure in gas cylinder 2 to be detected and explosion does not occur, gas cylinder composite quality standard to be detected being described, if do not reach burst pressure and explosion, being substandard product.
3) torture test: open solenoid valve 4, by gas cylinder pressure release, open cylinder valve 14 again, give surge flask 8 supercharging by gaseous nitrogen source 15, and then give gas cylinder 2 to be detected supercharging, after being pressurized to regulation burst pressure, close cylinder valve 14, observe gas cylinder 2 to be detected, repeatedly carry out explosion bulge test to gas cylinder explosion, record times of fatigue.
Claims (10)
1. a gas cylinder fatigue at low temperatures blasting experiment device, is characterized in that: be provided with for providing the gaseous nitrogen source of gaseous nitrogen (15), being incubated storage tank (1) for the liquid nitrogen providing the liquid nitrogen source of liquid nitrogen (9), surge flask (8) and upper end to be provided with upper cover (3); Gaseous nitrogen source (15) is communicated with surge flask (8) with pipeline through cylinder valve (14), threeway I (11); Liquid nitrogen source (9) is communicated with surge flask (8) with pipeline through threeway I (11); Surge flask (8) is connected with threeway II (5) through pipeline; Low-temperature pressure sensor (6) is connected with threeway II (5); Nitrogen blanketing valve (24) one end is connected with threeway II (5), and the other end stretches in gas cylinder to be detected (2).
2. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 1, is characterized in that: described cylinder valve (14) is made up of stop valve I and pressure regulator valve.
3. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 1 and 2, is characterized in that: be provided with supercharge pump (13) and stop valve II (12) between gaseous nitrogen source (15) and threeway I (11).
4. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 3, is characterized in that: be provided with stop valve III (10) between liquid nitrogen source (9) and threeway I (11).
5. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 4, it is characterized in that: be provided with safety valve (22), safety valve (22) is connected with threeway III (7), and threeway III (7) is arranged on the pipeline between surge flask (8) and threeway II (5).
6. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 5, it is characterized in that: be provided with solenoid valve (4), solenoid valve (4) is communicated with gas cylinder to be detected (2) through pipeline.
7. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 6, it is characterized in that: be provided with control system (16) and camera (17), the image pickup scope of camera (17) corresponds to liquid nitrogen insulation storage tank (1); Control system (16) is for controlling cylinder valve (14), supercharge pump (13), stop valve II (12), stop valve III (10); Camera (17) is connected with control system (16) with low-temperature pressure sensor (6).
8. a kind of gas cylinder fatigue at low temperatures blasting experiment device according to claim 7, is characterized in that: be provided with the bearing I (19) supporting gas cylinder to be detected (2) in liquid nitrogen insulation storage tank 1.
9. a gas cylinder fatigue at low temperatures blasting experiment method, is characterized in that, adopts experimental provision according to claim 8 to comprise the steps:
1) gas cylinder to be detected (2) is placed in liquid nitrogen insulation storage tank (1), nitrogen blanketing valve (24) one end be communicated with surge flask (8) is stretched in gas cylinder to be detected (2), liquid nitrogen is incubated storage tank (1) and is full of liquid nitrogen;
2) explosion bulge test: close cylinder valve (14), open stop valve III (10), liquid nitrogen is filled in gas cylinder to be detected (2), after reaching 0.15MPa, close stop valve III (10), open the stop valve I in cylinder valve (14), by gaseous nitrogen source (15) to surge flask (8) supercharging, and then give gas cylinder to be detected (2) supercharging, after being pressurized to regulation burst pressure, close cylinder valve (14), observe gas cylinder to be detected (2);
3) torture test: open solenoid valve (4), by gas cylinder pressure release, open cylinder valve (14) again, by gaseous nitrogen source (15) to surge flask (8) supercharging, and then give gas cylinder to be detected (2) supercharging, after being pressurized to regulation burst pressure, close cylinder valve (14), observe gas cylinder to be detected (2), repeatedly carry out explosion bulge test to gas cylinder explosion, record times of fatigue.
10. gas cylinder fatigue at low temperatures blasting experiment method according to claim 9, it is characterized in that, step 2) in, as the regulation burst pressure≤15MPa of gas cylinder, by the pressure regulator valve in adjustment cylinder valve (14) to gas cylinder to be detected (2) pressurising; As the regulation burst pressure >=15MPa of gas cylinder, open supercharge pump (13) to gas cylinder to be detected (2) pressurising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610031540.5A CN105466788A (en) | 2016-01-18 | 2016-01-18 | Low-temperature fatigue blasting test device and method for gas bottle |
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| CN201610031540.5A CN105466788A (en) | 2016-01-18 | 2016-01-18 | Low-temperature fatigue blasting test device and method for gas bottle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769524A (en) * | 2016-11-23 | 2017-05-31 | 安徽皖拓自动化有限公司 | Low temperature explosion bulge test device |
| CN109163978A (en) * | 2018-09-03 | 2019-01-08 | 中国石油天然气集团有限公司 | Low temperature gas transmission pipe bearing capacity and ductile-brittle transiton behavior full-scale test method |
| CN109374416A (en) * | 2018-09-20 | 2019-02-22 | 大连理工大学 | A kind of pressure vessel blasting test system and method for liquid oxygen environment |
| CN109612700A (en) * | 2018-12-11 | 2019-04-12 | 东南大学 | Components Performance Test System under deep cooling hyperbaric environment |
| CN110057658A (en) * | 2019-04-22 | 2019-07-26 | 龙源 | The cooling device and method of half gas low temperature high-pressure metal pipe explosion bulge test of heavy caliber |
| CN112284944A (en) * | 2019-07-25 | 2021-01-29 | 上海舜华新能源系统有限公司 | Pressure pulse test platform |
| CN114264551A (en) * | 2021-11-24 | 2022-04-01 | 合肥通用机械研究院有限公司 | Bursting test method and system for pressure vessel |
| 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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| CN106769524A (en) * | 2016-11-23 | 2017-05-31 | 安徽皖拓自动化有限公司 | Low temperature explosion bulge test device |
| CN109163978A (en) * | 2018-09-03 | 2019-01-08 | 中国石油天然气集团有限公司 | Low temperature gas transmission pipe bearing capacity and ductile-brittle transiton behavior full-scale test method |
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| CN110057658A (en) * | 2019-04-22 | 2019-07-26 | 龙源 | The cooling device and method of half gas low temperature high-pressure metal pipe explosion bulge test of heavy caliber |
| CN112284944A (en) * | 2019-07-25 | 2021-01-29 | 上海舜华新能源系统有限公司 | Pressure pulse test platform |
| CN114264551A (en) * | 2021-11-24 | 2022-04-01 | 合肥通用机械研究院有限公司 | Bursting test method and system for pressure vessel |
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| 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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Application publication date: 20160406 |