CN108918131B - Testing device for valve under severe working condition - Google Patents
Testing device for valve under severe working condition Download PDFInfo
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- CN108918131B CN108918131B CN201810874554.2A CN201810874554A CN108918131B CN 108918131 B CN108918131 B CN 108918131B CN 201810874554 A CN201810874554 A CN 201810874554A CN 108918131 B CN108918131 B CN 108918131B
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 239000007787 solid Substances 0.000 claims abstract description 58
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000012806 monitoring device Methods 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the field of valve tests, and particularly relates to a test device for a valve under severe working conditions, which comprises a main pipeline and a solid medium injection branch line, wherein a pressure source device, a flowmeter and a heater are arranged on the main pipeline, a pressure sensor for detecting test pressure and a temperature sensor for detecting test temperature are arranged near the test valve after the tested test valve is arranged on the heater on the main pipeline, a flow monitoring device is arranged at the outlet side of the test valve, and the solid medium injection branch line is used for injecting solid medium into the main pipeline in front of the test valve. The invention has pressure and temperature when testing the valve, solid medium in the medium, simulates harsh working condition to test, fills the gap of the existing valve test device, and can test the switch life and cycle life of the valve for harsh working condition.
Description
Technical Field
The invention belongs to the field of valve tests, and particularly relates to a test device for a valve under severe working conditions.
Background
The valve is widely used for the on-off control of pipeline systems of petroleum, chemical industry, coal chemical industry, polysilicon, electric power and other industrial devices. With the development of industry, the valve has more and more harsh working conditions, and the working conditions have higher pressure and higher temperature, and even the medium also contains solid particle medium. The valve is easy to damage when being used under a severe working condition, in order to improve the reliability of the valve in the severe working condition, the valve needs to be tested by simulating the actual working condition, although the working condition of the valve is very complex, the valve is usually tested by the existing valve standard only considering the use pressure of the valve, and part of the standard also considers the use temperature of the valve, for example, the low-temperature valve standard requires the valve to be tested under the low-temperature working condition.
Disclosure of Invention
The invention aims to overcome the defects and the shortcomings of the prior art and provides a test device for a valve under severe working conditions.
The technical scheme adopted by the invention is as follows: the utility model provides a test device of harsh operating mode valve, includes main pipeline, solid medium injection branch line, be equipped with pressure source device, flowmeter, heater on the main pipeline, after the test valve of being tested is installed on main pipeline heater, be equipped with near the test valve and be used for detecting test pressure's pressure sensor and be used for detecting test temperature's temperature sensor, be equipped with flow monitoring device at the exit side of test valve, solid medium injection branch line is to the main pipeline injection solid medium before the test valve.
The main pipeline comprises a pressure source device, a pressurizing container, a first pressure reducing valve, a pressure stabilizing container, a flowmeter and a heater which are connected through pipelines in sequence, wherein the pressure source device is a pump and a compressor, the pump and the compressor are respectively communicated with the pressurizing container through pipelines and are respectively switched through a first valve and a second valve, and the pressure stabilizing container is connected with the compressor through the pipelines and is switched through a seventh valve.
The pipeline that the pressure vessel connected with the pressure stabilizing vessel is arranged at the lower part of the pressure vessel, and the pipeline that the pressure stabilizing vessel connected with the flowmeter is arranged at the lower part of the pressure stabilizing vessel.
The top of the pressurizing container is provided with a first safety valve, and the pressurizing container is provided with a first liquid level meter.
The top of the pressure stabilizing container is provided with a second safety valve, and the pressure stabilizing container is provided with a second liquid level meter.
The solid medium injection branch line comprises a third valve, a solid medium metering cylinder, a fourth valve and a solid medium storage container which are connected through pipelines in sequence, a first pipeline connected with a compressor is arranged at the top of the solid medium storage container, a third filter, a third pressure reducing valve, a container and a sixth valve are arranged on the first pipeline, a second pipeline connected with a pressurizing container is arranged at the top of the solid medium metering cylinder, and a second filter, a fifth valve and a second pressure reducing valve are arranged on the second pipeline.
A first filter is arranged between the heater and the test valve, and the output end of the solid medium injection branch line is connected to a main pipeline between the first filter and the test valve.
The main pipeline is provided with a first cooler.
The flow detection device is an orifice plate flowmeter with small orifices.
The end of the main pipeline is provided with a solid medium collecting device and a liquid medium collecting device.
The beneficial effects of the invention are as follows: the invention has pressure and temperature when testing the valve, solid medium in the medium, simulates harsh working condition to test, fills the gap of the existing valve test device, and can test the switch life and cycle life of the valve for harsh working condition.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic diagram of a test apparatus for a severe operating mode valve;
in the figure, 1-pump, 2-compressor, 3-first valve, 4-second valve, 5-pressurizing container, 6-first pressure reducing valve, 7-pressure stabilizing container, 8-first relief valve, 9-second relief valve, 10-flowmeter, 11-first cooler, 12-heater, 13-first filter, 14-test valve, 15-flow monitoring device, 16-solid medium collecting device, 17-liquid medium collecting device, 18-temperature sensor, 19-test valve actuator, 20-pressure sensor, 21-second cooler, 22-third valve, 23-solid medium measuring cylinder, 24-fourth valve, 25-fifth valve, 26-solid medium storing container, 27-second pressure reducing valve, 28-third pressure reducing valve, 29-container, 30-sixth valve, 31-first liquid level meter, 32-second liquid level meter, 33-seventh valve, 34-second filter, 35-third filter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.
As shown in figure 1, the test device for the valve under the severe working condition comprises a main pipeline and a solid medium injection branch line,
the main pipeline comprises a pressure source device, a pressurizing container 5, a first pressure reducing valve 6, a pressure stabilizing container 7, a flowmeter 10, a heater 12 and a first filter 13 which are sequentially connected through pipelines, wherein after a tested test valve 14 is arranged on the first filter 13 on the main pipeline, the pressure source device is a pump 1 and a compressor 2, the pump 1 and the compressor 2 are respectively connected with the pressurizing container 5 and are respectively switched through a first valve 3 and a second valve 4, a pressure sensor 20 for detecting test pressure and a temperature sensor 18 for detecting test temperature are arranged near the test valve 14, and a flow monitoring device 15 is arranged at the outlet side of the test valve 14; the pump 1 or the compressor 2 can be used as a pressure source according to the requirement, the pump 1 can be a water pump or an oil pump according to the requirement, and the compressor 2 can be an air compressor or a nitrogen compressor. The first valve 3 and the second valve 4 are used for switching between the pump 1 and the compressor 2. A flow meter 10, a cooler 111, a heater 12, and a first filter 13 are mounted on the main pipe, and the flow meter 10 is used to measure the flow rate of the test fluid. The heater 11 is used for heating the test medium, and the first filter 13 is used for preventing the solid medium for test from entering the right pressure stabilizing container side of the filter 13. The test valve 14 is installed on the main pipe line, and a pressure sensor 20 and a temperature sensor 18 are installed in the vicinity of the test valve, and the test pressure and the test temperature of the test valve are detected and controlled by the pressure sensor 20 and the temperature sensor 18.
The pipeline of the pressurizing container 5 connected with the pressure stabilizing container 7 is arranged at the lower part of the pressurizing container 5, the pressure stabilizing container 7 is connected with the compressor 2 through the pipeline and is switched through the seventh third valve 3, and the pipeline of the pressure stabilizing container 7 connected with the flowmeter 10 is arranged at the lower part of the pressure stabilizing container 7. When the test medium is a gaseous medium, the whole pressurized container 5 is filled with the gaseous medium, and when the test medium is a liquid, the pressurized container 5 is filled with the gaseous medium first, then the liquid medium is filled, the upper part of the pressurized container is a gaseous medium, and the lower part is a liquid medium, so that the pressure of the pressurized container is more stable due to the compressibility of the gaseous medium. The pressure stabilizing container 7 and the pressurizing container 5 are connected through a pipeline, and the pipeline is arranged at the lower parts of the pressure stabilizing container 7 and the pressurizing container 5, so that when the test medium is liquid, the medium in the pipeline is ensured to be liquid. The first pressure reducing valve 6 is arranged on the pipeline, the pressure of the first pressure reducing valve 6 is set to be the test pressure, and when the test medium is the gas medium, the gas medium in the increasing container 5 enters the pressure stabilizing container 7 through the first pressure reducing valve 6 until the pressure of the pressure stabilizing container 7 reaches the test pressure. When the test medium is a liquid medium, the seventh valve 33 is usually opened to fill the gas medium into the surge tank 7, then the seventh valve 33 is closed, and then the liquid medium is filled into the surge tank through the first pressure reducing valve 6, so that the upper part of the surge tank 7 is the gas medium, and the lower part is the liquid medium, and the pressure stability of the surge tank 7 is easily ensured due to the compressibility of the gas medium. The lower part of the pressure stabilizing container 7 is connected with the main pipeline, and when the test medium is liquid, the medium entering the main pipeline of the pressure stabilizing container 7 is ensured to be liquid.
The solid medium injection branch line is connected with a main pipeline between the first filter 13 and the test valve 14 and comprises a third valve 22, a solid medium metering cylinder 23, a fourth valve 24 and a solid medium storage container 26 which are connected in sequence through pipelines, wherein the top of the solid medium storage container 26 is provided with a first pipeline connected with the compressor 2, the first pipeline is provided with a third filter 35, a third pressure reducing valve 28, a container 29 and a sixth valve 30, the top of the solid medium metering cylinder 23 is provided with a second pipeline connected with the pressurizing container 5, and the second pipeline is provided with a second filter 34, a fifth valve 25 and a second pressure reducing valve 27. Opening the sixth valve 30 may charge the container 29 with and store the gaseous medium. The third filter 35 prevents the solid medium in the solid medium storage vessel 26 from back-flowing into the line and the vessel 29 and the compressor 2. The second filter 34 prevents the solid medium in the solid medium metering cylinder 23 from being back-strung to the line and the pressurizing container 5. The third valve 22 and the fifth valve 25 are closed, then the fourth valve 24 is opened, the air pressure of the container 29 is reduced by the third pressure reducing valve 28 and acts in the solid medium storage container 26, so that the solid medium in the container enters and fills the solid medium measuring cylinder 23, then the fourth valve 24 is closed, when the solid medium needs to be injected into the main pipeline, the fifth valve 25 and the third valve 22 are opened, and in order to ensure that the solid medium can be injected into the main pipeline, the pressure of the second pressure reducing valve 27 is usually set to be slightly higher than the pressure of the first pressure reducing valve 6. The injection amount of the solid medium is determined based on the flow rate detected by the flow meter 10, so that it is possible to ensure that the percentage content of the solid medium in the main pipe reaches the design prescribed value.
A flow rate detection device 15, typically an orifice flowmeter of small orifice, is provided on the outlet side of the test valve 14.
The test valve 14 is provided with an actuator 19, which is usually a pneumatic device or an electric device, and when the test valve 14 is in a closed state, and the pressure and the temperature of the main pipeline reach the test requirements, the test can be started, and the solid medium is injected into the main pipeline through the solid medium injection branch line, at this time, the inlet side of the test valve 14 has the temperature, the pressure and the solid particle medium, and the outlet side of the test valve 14 has no pressure, and the test valve 14 is opened under the condition that the pressure difference exists at the two sides of the test valve 14. The test valve 14 is opened and then closed, after which the medium at the outlet side of the test valve 14 is completely discharged by the flow rate detecting device 15, the pressure difference is re-established at both sides of the test valve 14, and then the open-close life test of the test valve 14 is repeated. In the test process, the pressure-increasing container 5 automatically supplements media for the pressure-stabilizing container 7 through the first pressure-reducing valve 6, so that the pressure of the pressure-stabilizing container 7 is ensured to be constant, and thus the pressure requirement of the test is met, and when the pressure of the pressure-increasing container 5 is reduced to a set value, the system automatically starts the pump 1 or the compressor 2, so that the pressure-increasing container 5 can always supplement the pressure for the pressure-stabilizing container 7.
After the test valve 14 is closed, if the orifice flowmeter serving as the flow rate detecting device 15 always has a flow rate, it is necessary to stop the test and detect the test valve 14, indicating that the test valve 14 has leaked.
The test device can also perform the cycle life test of the test valve 14 at a set temperature and pressure, the test medium can be liquid or gas, and a set amount of solid medium can be added into the medium to check the tightness and reliability of the test valve 14 under severe working conditions, the opening and closing cycle times of the test valve 14 can be detected through an executing mechanism, and whether the test valve 14 has leaked can be detected at any time through an orifice plate flowmeter serving as the flow detection device 15.
The top of booster container 5 is equipped with first relief valve 8, be equipped with first level gauge 31 on the booster container 5, the top of steady voltage container 7 sets up second relief valve 9, be equipped with second level gauge 32 on the steady voltage container 7. The overpressure of the pressurizing container 5 and the pressure stabilizing container 7 is prevented, and the equipment and personal safety are ensured. The first 31 and second 32 level gauges function to monitor the liquid level in the pressure vessel 5 and pressure vessel 7.
The main pipe is provided with a first cooler 11. The first cooler 11 can prevent the medium temperature on the surge tank 7 side from becoming too high.
The solid medium injection branch line is provided with a second cooler 21. The second cooler 21 serves to prevent the temperature of the branch line from becoming too high.
The flow detection device 15 is an orifice plate flowmeter with small orifices. The orifice plate flowmeter of the small hole plays a role in flow control, and when the test valve 14 is fully opened, the large flow discharge of the medium in the main pipeline system is limited, so that energy can be effectively saved.
At the end of the main line there is provided a solid medium collecting device 16 and a liquid medium collecting device 17. The solid media collection device may employ a filter that is capable of allowing a liquid to flow therethrough and collecting the solid media in the filter. The discharged medium is separated and collected by the solid medium collecting device 16 and the liquid medium collecting device 17, so that waste is reduced, and the discharged medium can be reused.
The test device of the valve under the harsh working condition has pressure and temperature and solid medium in the medium when the valve is tested, but because the test device is provided with the cooler and the filter, main equipment such as a pump, a compressor, a pressure stabilizing container, a pressurizing container, a pressure reducing valve and the like are not contacted with the solid medium and are not subjected to high temperature, so that the difficulty and the manufacturing cost of the device construction are greatly reduced, and the reliability of the device is also improved.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (7)
1. A test device of a valve under severe working conditions is characterized in that: the solid medium injection branch line is provided with a pressure source device, a flowmeter (10) and a heater (12), a pressure sensor (20) for detecting test pressure and a temperature sensor (18) for detecting test temperature are arranged near the test valve (14) after the tested test valve (14) is arranged on the heater (12) on the main pipeline, a flow monitoring device (15) is arranged at the outlet side of the test valve (14), and the solid medium injection branch line injects solid medium into the main pipeline;
the main pipeline comprises a pressure source device, a pressurizing container (5), a first pressure reducing valve (6), a pressure stabilizing container (7), a flowmeter (10) and a heater (12) which are sequentially connected through pipelines, wherein the pressure source device comprises a pump (1) and a compressor (2), the pump (1) and the compressor (2) are respectively communicated with the pressurizing container (5) through the pipelines and are respectively switched through the first valve (3) and the second valve (4), and the pressure stabilizing container (7) is connected with the compressor (2) through the pipelines and is switched through a seventh valve (33);
the solid medium injection branch line comprises a third valve (22), a solid medium metering cylinder (23), a fourth valve (24) and a solid medium storage container (26) which are connected through pipelines in sequence, a first pipeline connected with the compressor (2) is arranged at the top of the solid medium storage container (26), a third filter (35), a third pressure reducing valve (28), a container (29) and a sixth valve (30) are arranged on the first pipeline, a second pipeline connected with the pressure increasing container (5) is arranged at the top of the solid medium metering cylinder (23), and a second filter (34), a fifth valve (25) and a second pressure reducing valve (27) are arranged on the second pipeline;
the pipeline that pressurizes container (5) connection steady voltage container (7) sets up in the lower part of pressurizeing container (5), the pipeline that steady voltage container (7) connect flowmeter (10) sets up in the lower part of steady voltage container (7).
2. The severe condition valve testing apparatus of claim 1, wherein: the top of the pressurizing container (5) is provided with a first safety valve (8), and the pressurizing container (5) is provided with a first liquid level meter (31).
3. The severe condition valve testing apparatus of claim 1, wherein: the top of steady voltage container (7) sets up second relief valve (9), be equipped with second level gauge (32) on steady voltage container (7).
4. The severe condition valve testing apparatus of claim 1, wherein: a first filter (13) is arranged between the heater (12) and the test valve (14), and the output end of the solid medium injection branch line is connected to a main pipeline between the first filter (13) and the test valve (14).
5. The severe condition valve testing apparatus of claim 1, wherein: the main pipeline is provided with a first cooler (11).
6. The severe condition valve testing apparatus of claim 1, wherein: the flow detection device (15) is an orifice plate flowmeter with small orifices.
7. The severe condition valve testing apparatus of claim 1, wherein: a solid medium collecting device (16) and a liquid medium collecting device (17) are arranged at the tail end of the main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874554.2A CN108918131B (en) | 2018-08-03 | 2018-08-03 | Testing device for valve under severe working condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874554.2A CN108918131B (en) | 2018-08-03 | 2018-08-03 | Testing device for valve under severe working condition |
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| Publication Number | Publication Date |
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| CN108918131A CN108918131A (en) | 2018-11-30 |
| CN108918131B true CN108918131B (en) | 2024-01-19 |
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| CN201810874554.2A Active CN108918131B (en) | 2018-08-03 | 2018-08-03 | Testing device for valve under severe working condition |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114838931B (en) * | 2022-03-28 | 2024-08-27 | 浙江省泵阀产品质量检验中心（永嘉县质量技术监督检测研究院） | Multi-position wear simulation test device for wear-resistant valve |
| CN115031953B (en) * | 2022-03-28 | 2024-08-27 | 浙江省泵阀产品质量检验中心（永嘉县质量技术监督检测研究院） | But solid material medium cyclic utilization's lock hopper valve test device |
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