CN111948058A - Gas cylinder internal measurement method hydrostatic test device - Google Patents
Gas cylinder internal measurement method hydrostatic test device Download PDFInfo
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- CN111948058A CN111948058A CN202010749641.2A CN202010749641A CN111948058A CN 111948058 A CN111948058 A CN 111948058A CN 202010749641 A CN202010749641 A CN 202010749641A CN 111948058 A CN111948058 A CN 111948058A
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 24
- 238000000691 measurement method Methods 0.000 title abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 241000190070 Sarracenia purpurea Species 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 69
- 230000006837 decompression Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A gas cylinder internal measuring method hydrostatic test device belongs to the technical field of pressure container detection. The device for testing the hydrostatic pressure of the gas cylinder by the measuring method comprises a pressurizing system, a detecting system, a pressure relief system and a corresponding pipeline system, wherein a one-way valve, a plurality of sets of detecting systems, the pressure relief system, a second pressure gauge and a third pressure gauge are all connected to a main pipeline, one end of a loading valve of the detecting system is connected with the main pipeline, the other end of the loading valve of the detecting system is connected with a gas cylinder to be tested through a quality tester, a measuring valve is connected to a pipeline between the loading valve and the quality tester, and an outlet pipe of the measuring valve extends into a water cup positioned on an electronic. The test device has simple structure and stable pressurization; the problem of errors caused by backflow of the gas cylinder to the bypass when the pressure is released by an internal measurement method is solved; have high-efficient multi-purpose ability simultaneously, satisfy and detect a plurality of gas cylinders simultaneously.
Description
Technical Field
The invention relates to a gas cylinder internal measuring method hydrostatic test device, and belongs to the technical field of pressure container detection.
Background
With the increase of the use amount of compressed gas in social development, the gas cylinders are increasingly widely used as storage containers of the compressed gas. As a pressure container, the gas cylinder has certain dangerousness in the processes of transportation, use and repeated reloading, and once an accident happens, immeasurable loss and serious consequences can be caused. In order to enforce the safe code use of cylinders, the cylinders must be regularly checked and checked one by one, according to the relevant regulations.
According to the national standard, the gas cylinder hydrostatic test must be carried out in the gas cylinder production process. The gas cylinder hydrostatic test is a detection method for detecting whether the integral strength of the gas cylinder meets the requirement to reach the use qualification. The hydrostatic test is not only a necessary technical inspection project for the factory shipment of a newly produced gas cylinder, but also a main content which must be regularly inspected in the use process of the gas cylinder.
With the rapid development and progress of scientific technology, the hydraulic pressure test method of the gas cylinder also adopts a new technology and is developed rapidly. For a seamless gas cylinder and a composite gas cylinder, the residual deformation value after the volume pressure is unloaded is measured simultaneously in a hydrostatic test, and the volume residual deformation rate is used as a standard for judging whether the gas cylinder is qualified or not.
The existing gas cylinder hydrostatic test is mostly a complex and tedious hydrostatic test system, when the gas cylinder internal measurement hydrostatic test is carried out, the test method is complex, the operation is troublesome, and the test precision is not high, so that the test accuracy is influenced, and the test efficiency and the test maneuverability are influenced. Currently, the domestic prior art and application is extremely limited with respect to the internal measurement method.
Patent CN104568596A describes a full-automatic gas cylinder internal measuring method hydrostatic test device, which is controlled by a computer, but the pipeline is complex, and the device has no pressure maintaining capability.
Patent CN106092754A introduces a hydrostatic test device and method for a liquefied petroleum gas cylinder, which mainly adopts a differential pressure gauge, compares a seamless cylinder with a standard cylinder, and quantitatively determines whether the gas cylinder is qualified or not through algorithm correction.
The invention provides a gas cylinder internal measuring method hydrostatic test device, which is intended to ensure the stability of pressurization while simplifying the structure; meanwhile, when the pressure of the gas cylinder is released, the contraction backflow water is ensured not to pass through a bypass, and the error is reduced; have high-efficient multi-purpose ability concurrently, can detect a plurality of gas cylinders simultaneously.
Disclosure of Invention
In order to solve the problem of water pressure detection of the gas cylinder, the invention provides a water pressure test device of a gas cylinder internal measuring method, which has the advantages of simple structure, stable pressure keeping, inaccurate backflow measurement during pressure relief reduction and capability of simultaneously testing a plurality of gas cylinders.
The technical scheme adopted by the invention is as follows: a gas cylinder internal measuring method hydrostatic test device comprises a pressurization system, a detection system, a pressure relief system and a corresponding pipeline system, wherein the pressurization system is connected with an inlet of a pressurization pump through a water inlet valve by adopting a tap water pipe, and an outlet of the pressurization pump is simultaneously connected with a one-way valve and a first pressure gauge; the detection system comprises a loading valve, a quality detector, a gas cylinder to be detected, a measuring valve and a water cup with an electronic scale; the pressure relief system comprises a pressure relief valve and a rupture disk; the check valve, the multiple sets of detection systems, the pressure relief system, the second pressure gauge and the third pressure gauge are all connected to the main pipeline; one end of a loading valve of the detection system is connected with the main pipeline, the other end of the loading valve is connected with a gas cylinder to be detected through a quality detector, a pipeline between the loading valve and the quality detector is connected with a measuring valve, and an outlet pipe of the measuring valve extends into a water cup positioned on the electronic scale; the inlets of the pressure release valve and the rupture disk are directly connected with the main pipeline, and the outlet pipes of the pressure release valve and the rupture disk are connected together.
When the number of the detection systems is two, one end of a first loading valve of one detection system is connected with the main pipeline, the other end of the first loading valve is connected with a first gas cylinder to be detected through a first quality detector, a pipeline between the first loading valve and the first quality detector is connected with a first measuring valve, and an outlet pipe of the first measuring valve extends into a first water cup positioned on the first electronic scale; one end of a second loading valve of the other set of detection system is connected with the main pipeline, the other end of the second loading valve is connected with a second gas cylinder to be detected through a second quality detector, a pipeline between the second loading valve and the second quality detector is connected with a second measuring valve, and an outlet pipe of the second measuring valve extends into a first water cup and a second water cup which are positioned on a second electronic scale.
The set threshold value of the rupture disk is 1.05 times of the maximum test pressure of the hydrostatic test of the gas cylinder to be tested.
The invention has the beneficial effects that: the device for testing the hydrostatic pressure of the gas cylinder by the measuring method comprises a pressurizing system, a detecting system, a pressure relief system and a corresponding pipeline system, wherein a one-way valve, a plurality of sets of detecting systems, the pressure relief system, a second pressure gauge and a third pressure gauge are all connected to a main pipeline, one end of a loading valve of the detecting system is connected with the main pipeline, the other end of the loading valve of the detecting system is connected with a gas cylinder to be tested through a quality tester, a measuring valve is connected to a pipeline between the loading valve and the quality tester, and an outlet pipe of the measuring valve extends into a water cup positioned on an electronic. The test device has simple structure and stable pressurization; the problem of errors caused by backflow of the gas cylinder to the bypass when the pressure is released by an internal measurement method is solved; have high-efficient multi-purpose ability simultaneously, satisfy and detect a plurality of gas cylinders simultaneously.
Drawings
Fig. 1 is a water pressure test device by a gas cylinder internal measuring method.
In the figure: 1. the device comprises a water inlet valve, 2, a booster pump, 3, a one-way valve, 4, a first pressure gauge, 5, a second pressure gauge, 6, a third pressure gauge, 7, a first loading valve, 7a, a second loading valve, 8, a first quality detector, 8a, a second quality detector, 9, a first gas cylinder to be detected, 9a, a second gas cylinder to be detected, 10, a first measuring valve, 10a, a second measuring valve, 11, a first water cup, 11a, a second water cup, 12, a pressure gauge valve, 13, a pressure relief valve, 14, a rupture disc, 15, a first electronic scale, 15a, a second electronic scale, 16 and a main pipeline.
Detailed Description
The figures and examples of the invention are further described below, but the examples are not to be construed as limiting the invention.
Fig. 1 shows a gas cylinder internal measuring hydraulic pressure test device. In the figure, the gas cylinder inside measuring method hydrostatic test device comprises a pressurization system, a detection system, a pressure relief system and a corresponding pipeline system. The pressurizing system adopts a tap water pipe to be connected with an inlet of a pressurizing pump 2 through a water inlet valve 1, and an outlet of the pressurizing pump 2 is simultaneously connected with a one-way valve 3 and a first pressure gauge 4. The detection system comprises a loading valve, a quality detector, a gas cylinder to be detected, a measuring valve 10 and a water cup with an electronic scale. The pressure relief system comprises a pressure relief valve 13 and a rupture disk 14; the check valve 3, the multiple sets of detection systems, the pressure relief system, the second pressure gauge 5 and the third pressure gauge 6 are all connected to the main pipeline 16. One end of a loading valve of the detection system is connected with the main pipeline 16, the other end of the loading valve is connected with a gas cylinder to be detected through a quality detector, a pipeline between the loading valve and the quality detector is connected with a measuring valve, and an outlet pipe of the measuring valve extends into a water cup positioned on the electronic scale; the inlets of the pressure relief valve 13 and the rupture disk 14 are directly connected with the main pipeline 16, and the outlet pipes of the pressure relief valve 13 and the rupture disk 14 are connected together. The set threshold value of the rupture disk 14 is 1.05 times of the maximum test pressure of the hydrostatic test of the gas cylinder to be tested.
Example 1
When a single gas cylinder is detected, the detection system only uses one set, namely one end of the first loading valve 7 is connected with the main pipeline 16, the other end of the first loading valve is connected with the first gas cylinder 9 to be detected through the first quality detector 8, the pipeline between the first loading valve 7 and the first quality detector 8 is connected with the first measuring valve 10, and the outlet pipe of the first measuring valve 10 extends into the first water cup 11 on the first electronic scale 15.
Example 2
When two gas cylinders are detected simultaneously, two detection systems are used, namely one end of a first loading valve 7 of one detection system is connected with a main pipeline 16, the other end of the first loading valve 7 of the one detection system is connected with a first gas cylinder 9 to be detected through a first quality detector 8, a pipeline between the first loading valve 7 and the first quality detector 8 is connected with a first measuring valve 10, and an outlet pipe of the first measuring valve 10 extends into a first water cup 11 positioned on a first electronic scale 15; one end of a second loading valve 7a of the other set of detection system is connected with a main pipeline 16, the other end of the second loading valve is connected with a second gas cylinder 9a to be detected through a second quality detector 8a, a pipeline between the second loading valve 7a and the second quality detector 8a is connected with a second measuring valve 10a, and an outlet pipe of the second measuring valve 10a extends into a first water cup 11a positioned on a second electronic scale 15 a.
Example 3
In a similar way, when a plurality of gas cylinders are detected simultaneously, a plurality of sets of detection systems are needed.
By adopting the technical scheme, taking the simultaneous detection of two gas cylinders as an example, the operation process of the detection system is described as follows:
1. after the pipeline is checked to be intact, testing the gas cylinder;
2. firstly, the water inlet valve 1, the first loading valve 7 and the second loading valve 7a are opened, and the first measuring valve 10, the second measuring valve 10a and the pressure relief valve 13 are closed. Tap water quickly fills the whole device through the water inlet valve 1 and the booster pump 2; then, the outlet pressure of the booster pump 2 is set to be the test pressure of the first gas cylinder 9 to be tested and the second gas cylinder 9a to be tested, the pressurization operation is carried out on the first gas cylinder 9 to be tested and the second gas cylinder 9a to be tested, and the outlet pressure can be determined by the first pressure gauge 4. When the pressure of the second pressure gauge 5 and the third pressure gauge 6 is stable, namely the pressure is the same as the value of the first pressure gauge 4, the pressurization is finished, and the amount of water entering the gas cylinder can be determined by the first quality detector 8 and the second measuring valve 8 a;
3. the water inlet valve 1 and the pressure pump 2 are closed, the pipeline can maintain pressure due to the existence of the one-way valve 3, after the pressure stabilizing preset time, the first loading valve 7 and the second loading valve 7a are closed, the first measuring valve 10 and the second measuring valve 10a are opened, when the pressure in the first gas cylinder 9 to be measured and the pressure in the second gas cylinder 9a to be measured are reduced, the gas cylinder body to be measured are contracted, the return water respectively flows into a first water cup 11 positioned on the first electronic scale 15 and a second water cup 11a positioned on the second electronic scale 15a through the pipeline, and the return water flow of the first gas cylinder 9 to be measured and the second gas cylinder 9a to be measured due to the reduction in pressure volume is respectively measured by the first electronic scale 15 and the second electronic scale 15 a;
4. and then carrying out quantitative analysis on the gas cylinder to be detected according to the empty cylinder weight of the gas cylinder to be detected, the full-load water quantity and the backflow water quantity of the gas cylinder to be detected, and judging whether the gas cylinder to be detected is qualified.
In the test, different pressure maintaining time can be respectively adopted for the gas cylinder to be tested, and the deformation effect is compared; and a certain gas cylinder to be detected can be replaced by a standard gas cylinder and subjected to quantitative comparative analysis. If overpressure occurs, the pipeline is decompressed through the rupture disk 9, and meanwhile, the decompression valve 13 is opened to carry out fast decompression.
Claims (3)
1. The utility model provides a survey method hydrostatic test device in gas cylinder, includes pressurization system, detecting system, pressure relief system and corresponding pipe-line system, characterized by: the pressurizing system adopts a tap water pipe to be connected with an inlet of a pressurizing pump (2) through a water inlet valve (1), and an outlet of the pressurizing pump (2) is simultaneously connected with a one-way valve (3) and a first pressure gauge (4); the detection system comprises a loading valve, a quality detector, a gas cylinder to be detected, a measuring valve (10) and a water cup with an electronic scale; the pressure relief system comprises a pressure relief valve (13) and a rupture disc (14); the check valve (3), the multiple sets of detection systems, the pressure relief system, the second pressure gauge (5) and the third pressure gauge (6) are all connected to the main pipeline (16); one end of a loading valve of the detection system is connected with a main pipeline (16), the other end of the loading valve is connected with a gas cylinder to be detected through a quality detector, a pipeline between the loading valve and the quality detector is connected with a measuring valve, and an outlet pipe of the measuring valve extends into a water cup positioned on an electronic scale; the inlets of the pressure release valve (13) and the rupture disk (14) are directly connected with the main pipeline (16), and the outlet pipes of the pressure release valve (13) and the rupture disk (14) are connected together.
2. The gas cylinder internal measuring method hydrostatic test device according to claim 1, characterized in that: when the number of the detection systems is two, one end of a first loading valve (7) of one detection system is connected with a main pipeline (16), the other end of the first loading valve is connected with a first gas cylinder (9) to be detected through a first quality detector (8), a pipeline between the first loading valve (7) and the first quality detector (8) is connected with a first measuring valve (10), and an outlet pipe of the first measuring valve (10) extends into a first water cup (11) on a first electronic scale (15); one end of a second loading valve (7 a) of the other set of detection system is connected with the main pipeline (16), the other end of the second loading valve is connected with a second gas cylinder (9 a) to be detected through a second quality detection meter (8 a), a pipeline between the second loading valve (7 a) and the second quality detection meter (8 a) is connected with a second measuring valve (10 a), and an outlet pipe of the second measuring valve (10 a) extends into a first secondary water cup (11 a) on a second electronic scale (15 a).
3. The gas cylinder internal measuring method hydrostatic test device according to claim 1, characterized in that: the set threshold value of the rupture disk (14) is 1.05 times of the maximum test pressure of the gas cylinder hydrostatic test to be tested.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749641.2A CN111948058A (en) | 2020-07-30 | 2020-07-30 | Gas cylinder internal measurement method hydrostatic test device |
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| CN202010749641.2A CN111948058A (en) | 2020-07-30 | 2020-07-30 | Gas cylinder internal measurement method hydrostatic test device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528840A (en) * | 1984-02-06 | 1985-07-16 | Wass Lloyd G | Hydrostatic test stand |
| CN202083595U (en) * | 2011-02-24 | 2011-12-21 | 第二炮兵装备研究院第六研究所 | High-pressure gas cylinder performance detector |
| CN204679346U (en) * | 2015-06-11 | 2015-09-30 | 成都格瑞特高压容器有限责任公司 | A kind of fatigue test device of bottle type container |
| CN105424489A (en) * | 2015-12-22 | 2016-03-23 | 长庆石油勘探局技术监测中心 | Carbon fiber gas cylinder detection line and carbon fiber gas cylinder detection method |
| CN106092754A (en) * | 2016-06-01 | 2016-11-09 | 天津市长龙宏业燃气设备有限公司 | A kind of liquefied petroleum gas steel cylinder water test unit and method |
| US20160334300A1 (en) * | 2015-05-11 | 2016-11-17 | HilFlo, LLC | Hydrostatic Pressure Test Method |
| CN207570931U (en) * | 2017-12-08 | 2018-07-03 | 中国石油天然气股份有限公司 | Steel cylinder pressure experimental device |
| CN208751962U (en) * | 2018-09-14 | 2019-04-16 | 成都格瑞特高压容器有限责任公司 | Mobile gas cylinder internal test method water pressure test detection device |
-
2020
- 2020-07-30 CN CN202010749641.2A patent/CN111948058A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528840A (en) * | 1984-02-06 | 1985-07-16 | Wass Lloyd G | Hydrostatic test stand |
| CN202083595U (en) * | 2011-02-24 | 2011-12-21 | 第二炮兵装备研究院第六研究所 | High-pressure gas cylinder performance detector |
| US20160334300A1 (en) * | 2015-05-11 | 2016-11-17 | HilFlo, LLC | Hydrostatic Pressure Test Method |
| CN204679346U (en) * | 2015-06-11 | 2015-09-30 | 成都格瑞特高压容器有限责任公司 | A kind of fatigue test device of bottle type container |
| CN105424489A (en) * | 2015-12-22 | 2016-03-23 | 长庆石油勘探局技术监测中心 | Carbon fiber gas cylinder detection line and carbon fiber gas cylinder detection method |
| CN106092754A (en) * | 2016-06-01 | 2016-11-09 | 天津市长龙宏业燃气设备有限公司 | A kind of liquefied petroleum gas steel cylinder water test unit and method |
| CN207570931U (en) * | 2017-12-08 | 2018-07-03 | 中国石油天然气股份有限公司 | Steel cylinder pressure experimental device |
| CN208751962U (en) * | 2018-09-14 | 2019-04-16 | 成都格瑞特高压容器有限责任公司 | Mobile gas cylinder internal test method water pressure test detection device |
Non-Patent Citations (2)
| Title |
|---|
| LIN LEI等: "Strain test and stress intensity assessment of a CPR1000 Nuclear Power Plant pressurizer during pre-delivery hydrostatic test" * |
| 张礼华等: "双工位气瓶外测法水压试验装置的设计" * |
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