CN112781792A - Valve internal leakage simulation test device and method - Google Patents
Valve internal leakage simulation test device and method Download PDFInfo
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- CN112781792A CN112781792A CN201911078514.8A CN201911078514A CN112781792A CN 112781792 A CN112781792 A CN 112781792A CN 201911078514 A CN201911078514 A CN 201911078514A CN 112781792 A CN112781792 A CN 112781792A
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Abstract
The invention discloses a valve internal leakage simulation test device, which comprises: the storage tank group comprises a first storage tank and a second storage tank, the first storage tank and the second storage tank are connected through a regulating valve, and the air compressor is connected with the first storage tank through an inflation valve; the test pipeline is sequentially connected with the flowmeter group, the valve group to be tested and the emptying pipe group in series, wherein in a first inflation mode, the regulating valve is in a normally open state, the inflation valve is opened, and the first storage tank and the second storage tank are inflated to a first pressure value simultaneously; in the second inflation mode, the adjusting valve is closed, the inflation valve is opened, the inflation valve is closed after the first storage tank is inflated to the second pressure value, the adjusting valve is opened, and the second storage tank is inflated to the third pressure value. The invention also discloses a valve internal leakage simulation test method. According to the invention, through setting two gas-phase test gas filling modes, a proper gas filling mode can be selected according to different leakage amounts, the pressure stability is kept, and the test accuracy is improved.
Description
Technical Field
The invention relates to the field of valve leakage detection in the petrochemical industry, in particular to a valve internal leakage simulation test device and a method.
Background
In process plants in the petrochemical industry, valves are an essential part. At present, with the continuous development of equipment manufacturing technology, valves used in petrochemical devices are generally improved in both volume and structural complexity and technical level. Along with the continuous diversification of production processes and material types, the operating conditions of the valve are increasingly complex and severe, the opening and closing operation of the valve is frequent, and the phenomena of running, overflowing, dripping and leaking of the valve of the petrochemical device are caused by factors such as improper use and maintenance. Once a valve of a petrochemical plant process pipeline is leaked, the safety of equipment is seriously threatened; meanwhile, the leakage of the valve can also generate energy loss, and the conveying efficiency of the process pipeline medium of the device is reduced. Statistical data show that about 22% of industrial valves have leakage problems, more than one hundred of fire explosion accidents occur in the petrochemical industry in the near 30 years, wherein the accidents caused by the leakage of the valves and the pipelines account for 35.1%; in petrochemical plants, the non-controlled release of organic compounds caused by valve leakage accounts for 60%. Therefore, in the petrochemical production process, the valve leakage can be timely, efficiently and accurately found, and the method has important significance.
Valve leakage can be generally classified into outer leakage and inner leakage. When the valve leaks, the valve is visual, and the valve can be checked by methods such as audible flow sound, leakage detection liquid leakage detection, combustible gas detector leakage detection and the like. However, when the valve leaks, the valve is not easy to be found, has strong concealment and is easy to cause potential safety hazard. The method can provide guidance for detecting the valve internal leakage in the actual production process by simulating the valve internal leakage of various types and specifications and carrying out acoustic emission test detection. At present, the conventional valve leakage test bed is single in simulation mode generally and is difficult to simulate various different working conditions of petrochemical production. In order to obtain a more comprehensive simulation result, a plurality of sets of valve leakage test beds are often needed to perform a simulation test, so that the research cost is increased, and the utilization rate of equipment is reduced. In addition, pressure fluctuations that occur during the test can influence the simulation results.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
One of the purposes of the invention is to provide a valve internal leakage simulation test device and a method, so that the problems that the test device in the prior art is difficult to simulate different working conditions, has pressure fluctuation and the like are solved.
Another objective of the present invention is to provide a device and a method for simulating valve internal leakage, so as to obtain a more comprehensive simulation test result for reference in actual production.
Another objective of the present invention is to provide a valve internal leakage simulation test apparatus and method, so as to reduce the cost of the test apparatus in the prior art and improve the utilization rate of the apparatus.
To achieve one or more of the above objects, according to a first aspect of the present invention, there is provided a valve internal leakage simulation test apparatus, comprising: the storage tank set comprises a first storage tank and a second storage tank, the first storage tank and the second storage tank are connected through a regulating valve, the storage tank set is provided with a plurality of inflation modes, and an air compressor is connected with the first storage tank through an inflation valve; the test pipeline is connected to the downstream of the second storage tank and is sequentially connected with the flowmeter group, the valve group to be tested and the emptying pipe group in series, wherein in the first inflation mode, the regulating valve is in a normally open state, the inflation valve is opened, and the first storage tank and the second storage tank are inflated to a first pressure value simultaneously; in the second inflation mode, the adjusting valve is closed, the inflation valve is opened, the inflation valve is closed after the first storage tank is inflated to the second pressure value, the adjusting valve is opened, and the second storage tank is inflated to the third pressure value.
Further, among the above-mentioned technical scheme, leak analogue test device still includes in the valve: and the instrument air tank is connected with the air compressor and provides instrument air for the storage tank group.
Further, in the above technical solution, the flow meter group includes at least two gas flow meters, and the measuring ranges of the at least two gas flow meters are different; the valve group to be tested comprises a plurality of valves to be tested.
Further, among the above-mentioned technical scheme, the storage tank group is equipped with the relief valve.
Further, among the above-mentioned technical scheme, the second storage tank is equipped with the inlet, and in the third mode of aerifing, the governing valve is closed, and the inflation valve is opened, and first storage tank is aerifyd to the fourth pressure value, and the inlet is opened, and second storage tank water storage is to first liquid level.
Further, in the above technical solution, the flow meter group includes at least two liquid flow meters.
Further, among the above-mentioned technical scheme, the second storage tank is equipped with level sensor.
Further, in the above technical solution, the evacuation pipe group includes an exhaust pipe and a drain pipe.
According to a second aspect of the present invention, the present invention provides a valve internal leakage simulation test method, which employs the valve internal leakage simulation test apparatus according to any one of the above technical solutions, and the valve internal leakage simulation test method at least includes the following steps: setting test pressure, selecting a valve to be tested, a flowmeter and an inflation mode; inflating the storage tank group; and opening the test pipeline to detect the inner leakage.
Further, in the above technical scheme, before the step of inflating the tank group, the step of inflating the instrument wind tank is further included.
Further, in the above technical solution, the valve internal leakage simulation test method further includes the steps of: and after the test is finished, emptying the valve inner leakage simulation test device.
Further, in the above technical scheme, the inner leakage detection adopts nondestructive detection.
Further, in the above technical scheme, the nondestructive testing is acoustic emission testing.
Furthermore, in the above technical scheme, the valve internal leakage simulation test device is controlled by a PLC controller.
Compared with the prior art, the invention has the following beneficial effects:
1. through setting up the mode of aerifing of two kinds of gas phase tests, can leak the suitable mode of aerifing of volume selection according to the difference, keep pressure stable, leak in the valve of different operating modes more accurately simulation.
2. Through the flowmeter with different measuring ranges and the valve to be tested with different specifications and models, the simulation types of the internal leakage of the valve are richer, and the result is more accurate by selecting the inflation mode and the flowmeter.
3. By adopting the first inflation mode, the frequent opening and closing of the adjusting valve when the leakage amount is large can be avoided, so that equipment loss and pressure fluctuation are avoided; by adopting the second inflation mode, inflation time can be shortened, efficiency can be improved, energy can be saved, and cost can be saved by supplementing inflation or pressure relief when different pressure tests are switched.
4. The invention can also carry out liquid phase simulation tests, has more various simulation working condition types and reduces the vacancy rate of the device.
5. The invention can adopt PLC controller automatic control, and has simple operation and high efficiency.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means implementable in accordance with the contents of the description, and to make the above and other objects, technical features, and advantages of the present invention more comprehensible, one or more preferred embodiments are described below in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a valve internal leakage simulation test apparatus according to an embodiment of the present invention.
Description of the main reference numerals:
10-an air compressor, 20-a storage tank group, 21-a first storage tank, 211-an inflation valve, 22-a second storage tank, 221-a regulating valve, 222-a liquid inlet, 30-an instrument air tank, 40-a flow meter group, 411-a first gas flow meter, 412-a second gas flow meter, 421-a first liquid flow meter, 422-a second liquid flow meter, 50-a valve group to be tested, 51-a valve to be tested, 52-a hose, 60-an evacuation pipe, 61-an exhaust pipe and 62-a liquid discharge pipe.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Spatially relative terms, such as "below," "lower," "upper," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The article may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
In this document, the terms "first", "second", etc. are used to distinguish two different elements or portions, and are not used to define a particular position or relative relationship. In other words, the terms "first," "second," and the like may also be interchanged with one another in some embodiments.
As shown in fig. 1, a valve internal leakage simulation test device according to an embodiment of the present invention includes an air compressor 10 and a tank set 20. The tank group 20 includes a first tank 21 and a second tank 22, which are connected by a control valve 221, and the air compressor 10 is connected to the first tank 21 by an inflation valve 211. The storage tank group 20 is provided with a plurality of inflation modes to meet the requirements of different simulation tests on pressure stability or different pressure tests, so that the simulation test result is more accurate. Illustratively, the plurality of inflation modes includes a first inflation mode in which the first tank 21 and the second tank 22 are inflated simultaneously, and a second inflation mode in which the first tank 21 is inflated and then the second tank 22 is depressurized by the first tank 21. In the first inflation mode, the control valve 221 is in a normally open state, the inflation valve 211 is opened, and the air compressor 10 inflates the first tank 21 and the second tank 22 to the first pressure value simultaneously. The first storage tank 21 is communicated with the second storage tank 22, the pressure is the same, the first inflation mode can meet the requirement of pressure stability in a pipeline for a long time, the simulation test with a large leakage amount is suitable, and the loss of the frequently-opened and closed adjusting valve 221 and the pressure fluctuation caused by the loss are avoided. In the second inflation mode, the adjusting valve 221 is closed, the inflation valve 211 is opened, the air compressor 10 inflates the first storage tank 21 to the second pressure value, then the inflation valve 211 is closed, the adjusting valve 221 is opened, the first storage tank 21 releases pressure to the second storage tank 22 and inflates the pressure to the third pressure value, the adjusting valve 221 is automatically closed, and when the pressure value of the second storage tank 22 is lower than the third pressure value, the adjusting valve 221 is automatically opened. The second inflation mode can meet the pressure switching in different tests, the pressure is kept stable by opening and closing the regulating valve 221 in the tests, and the second inflation mode is suitable for a simulation test with small leakage amount.
Further, in one or more exemplary embodiments of the present invention, the valve internal leakage simulation test apparatus further includes an instrument air tank 30 connected to the air compressor 10, wherein the instrument air tank 30 supplies instrument air to the tank group 20 to supply air to the control valve in the apparatus.
Further, in one or more exemplary embodiments of the present invention, a test line is connected downstream of the tank bank 20, and the test line is connected in series with the flow meter bank 40, the valve bank 50 to be tested, and the purge line bank 60 in this order. Illustratively, the flow meter set 40 includes a first gas flow meter 411 and a second gas flow meter 412. It should be understood that the present invention is not limited thereto, the number of gas flow meters in the flow meter group can be selected according to actual needs, and one skilled in the art can reserve a pipe in the flow meter group. In order to meet the requirement of accurate flow measurement of different magnitudes, the ranges of the gas flow meters are preferably different, for example, the range of the first gas flow meter 411 is 0 to 2,000SLM, and the range of the second gas flow meter 412 is 0 to 120,000 SLM. When the amount of leakage is great in the simulation, the gas flowmeter with the large measuring range is preferably selected, when the amount of leakage is small in the simulation, the gas flowmeter with the small measuring range is preferably selected, and the detection precision is improved on the premise of meeting the measuring range requirement. Illustratively, the valve set under test 50 includes a plurality of valves under test 51 of different kinds and/or different diameters. For example, the valve set 50 to be tested may include six valves 51 to be tested, the drift diameters of which are DN50, DN80, DN100, DN150, DN200, and DN250, and the valves to be tested may be gate valves, stop valves, ball valves, etc., which is not limited in the present invention. The blind plates are arranged on two sides of the valve 51 to be tested, when the valve internal leakage simulation test is carried out, the blind plates on two sides of the valve to be tested are opened, and other blind plates are in a closed state. Preferably, but not by way of limitation, a flexible connection, such as hose 52, may be used at the blind to facilitate replacement of the valve under test and pipe modifications. The valve group 50 to be tested may also comprise a reserve pipe.
Further, in one or more exemplary embodiments of the present invention, the bank of tanks 20 is provided with a pressure relief valve to facilitate adjustment of pressure changes between the two sets of tests. For example, when the pressure requirement for a post-test is low, the pressure of the bank of tanks 20 may be adjusted to meet the requirement by the pressure relief valve without the need for emptying refill gas.
Preferably, but not by way of limitation, in one or more exemplary embodiments of the invention, the valve internal leakage simulation test apparatus may also be used for liquid phase leakage tests. The second storage tank 22 is provided with a liquid inlet 222, the inflation mode of the liquid phase test is a third inflation mode, wherein the adjusting valve 221 is closed, the inflation valve 211 is opened, the air compressor 10 inflates the first storage tank 21 to a fourth pressure value, then the liquid inlet 222 is opened, and the second storage tank 22 stores water to a first liquid level. During the test, the regulating valve 221 is opened, the first storage tank 21 is pressurized to the second storage tank 22, and the liquid in the second storage tank 22 enters the test pipeline under the pressure.
Further, in one or more exemplary embodiments of the present invention, in an embodiment including a liquid phase mode, the flow meter set 40 further includes a first liquid flow meter 421 and a second liquid flow meter 422. It should be understood that the present invention is not limited thereto, the number of the liquid flow meters in the flow meter group can be selected according to actual needs, and a person skilled in the art can reserve a pipeline in the flow meter group. In order to meet the requirement of accurate flow measurement of different magnitudes, the ranges of the liquid flow meters are preferably different, for example, the range of the first liquid flow meter 421 is 0 to 100SLM, and the range of the second liquid flow meter 422 is 100 to 1,200 SLM. When the amount of leakage is great in the simulation, the liquid flowmeter with the large measuring range is preferably selected, when the amount of leakage is small in the simulation, the liquid flowmeter with the small measuring range is preferably selected, and the detection precision is improved on the premise of meeting the measuring range requirement.
Further, in one or more exemplary embodiments of the present invention, the second tank 22 is provided with a liquid level sensor (not shown) having at least two thresholds, and when the stored water reaches the first liquid level, the liquid inlet 222 is automatically closed to stop the stored water; when the liquid level of the second storage tank 22 is lower than the second liquid level in the test process, an alarm signal is sent out, the alarm signal is turned off, the liquid inlet 222 is turned on again to store water in the second storage tank 22 to the first liquid level, and then the test is repeated.
Further, in one or more exemplary embodiments of the present invention, the evacuation tube group 60 includes an exhaust tube 61 and a drain tube 62.
Further, in one or more exemplary embodiments of the present invention, a valve internal leakage simulation test method is provided, which uses the valve internal leakage simulation test apparatus according to any one of the above technical solutions, and the valve internal leakage simulation test method at least includes the following steps: setting test pressure, selecting a valve to be tested, a flowmeter and an inflation mode; inflating the tank battery 20; and opening the test pipeline to detect the inner leakage.
Further, in one or more exemplary embodiments of the present invention, the step of inflating the bank of tanks further comprises inflating the instrument wind tank 30.
Further, in one or more exemplary embodiments of the present invention, the valve internal leakage simulation test apparatus is evacuated after the test is completed.
Further, in one or more exemplary embodiments of the present invention, the inner leak detection employs a non-destructive detection. Preferably, the non-destructive inspection is an acoustic emission inspection.
Further, in one or more exemplary embodiments of the present invention, the simulation test device for gas-liquid two-phase leakage in the valve may be controlled by a PLC controller, which is simple and efficient.
The present invention will be described in more detail by way of specific examples, which should be construed as being illustrative only and not limiting.
Example 1
Referring to fig. 1, in the valve internal leakage simulation test device of the present embodiment, the flow meter set 40 includes a first gas flow meter 411 (with a range of 0 to 2,000SLM), a second gas flow meter 412 (with a range of 0 to 120,000SLM), a first liquid flow meter 421 (with a range of 0 to 100SLM), and a second liquid flow meter 422 (with a range of 100 to 1,200 SLM); the valve group 50 to be tested comprises a DN50 gate valve, a DN80 ball valve, a DN100 stop valve, a DN150 gate valve, a DN200 ball valve and a DN250 gate valve.
In this embodiment, the inner leakage of the gate valve in the simulation test DN50 is selected, the first gas flowmeter 411 is selected, the second inflation mode is adopted, the preset second pressure value is 1MPa, and the third pressure value is 0.5 MPa.
The experimental procedure for this example is as follows: inflating the instrument wind tank 30 to reach a set pressure, wherein the instrument wind tank 30 provides instrument wind in the test process; the first storage tank 21 is inflated to 1MPa (second pressure value), the inflation valve 211 is closed, the regulating valve 221 is opened, and after the first storage tank 21 releases pressure to the second storage tank 22 and inflates to 0.5MPa (third pressure value), the regulating valve 221 is automatically closed. And opening the test pipeline and starting the simulation test. In the test process, when the pressure in the second storage tank 22 is lower than 0.5MPa (third pressure value), the regulating valve 221 is automatically opened to keep the pressure in the test pipeline stable.
Example 2
In this embodiment, after the test of embodiment 1, the internal leakage of the shut-off valve in the simulation test DN100 is selected, the first gas flowmeter 411 is selected, the second inflation mode is adopted, the preset second pressure value is 2MPa, and the third pressure value is 0.7 MPa.
The experimental procedure for this example is as follows: inflating the instrument wind tank 30 to reach a set pressure, wherein the instrument wind tank 30 provides instrument wind in the test process; the first storage tank 21 is inflated to 2MPa (second pressure value), the inflation valve 211 is closed, the regulating valve 221 is opened, and after the first storage tank 21 releases pressure to the second storage tank 22 and inflates to 0.7MPa (third pressure value), the regulating valve 221 is automatically closed. And opening the test pipeline and starting the simulation test. In the test process, when the pressure in the second storage tank 22 is lower than 0.7MPa (third pressure value), the regulating valve 221 is automatically opened to keep the pressure in the test pipeline stable. In the embodiment, each storage tank is inflated on the basis of the embodiment 1, so that only a small amount of gas needs to be supplemented, the inflation time is shortened, the test efficiency is improved, and the test resources are saved.
Example 3
In this embodiment, the device in embodiment 1 is implemented by selecting the inner leakage of the gate valve of the DN150 simulation test, selecting the second gas flowmeter 412, and adopting the first inflation mode, where the preset first pressure value is 1.5 MPa.
The experimental procedure for this example is as follows: inflating the instrument wind tank 30 to reach a set pressure, wherein the instrument wind tank 30 provides instrument wind in the test process; the control valve 221 is normally opened, and the first tank 21 and the second tank 22 are simultaneously charged to 1.5MPa (first pressure value), and then the charge valve 211 is closed. And opening the test pipeline and starting the simulation test. In the test process, when the opening of the DN150 gate valve is 10%, the pressure in the test pipeline can be kept stable for more than 15 minutes. In this embodiment, the simulated leakage amount is larger, so the first inflation mode is selected, and the first storage tank 21 and the second storage tank 22 are inflated simultaneously, so that the test pressure can be kept stable for a longer time, the frequent opening and closing of the regulating valve 221 can not be caused, and the loss and pressure fluctuation of the regulating valve can be reduced.
Example 4
The embodiment is the device in embodiment 1, carries out the liquid phase test, selects the interior hourglass of simulation test DN100 stop valve, chooses first fluidflowmeter 421 for use, adopts the third mode of aerifing, and the fourth pressure value of predetermineeing is 1MPa, and first liquid level is 100%, and the second liquid level is 10%, and the liquid level uses the percentage measurement of the height of second storage tank 22.
The experimental procedure for this example is as follows: inflating the instrument wind tank 30 to reach a set pressure, wherein the instrument wind tank 30 provides instrument wind in the test process; the first tank 21 is charged to 1MPa (fourth pressure value), the charge valve 211 is closed, the liquid inlet 222 is opened, and the second tank 22 is charged to the first liquid level. The liquid inlet 222 is closed, the regulating valve 221 is opened, the test pipeline is opened, the first storage tank 21 is pressed towards the second storage tank 22, the liquid in the second storage tank 22 enters the test pipeline through pressure, and the simulation test is started. During the test, when the liquid level in the second storage tank 22 is lower than the second liquid level, the liquid inlet 222 is opened again to store water in the second storage tank 22 to the first liquid level, and then the test is repeated.
Example 5
In this embodiment, a liquid phase test is performed on the apparatus in embodiment 1, the inner leakage of the gate valve DN250 in the simulation test is selected, the second liquid flow meter 422 is selected, and the third inflation mode is adopted, where the fourth preset pressure value is 0.5MPa, the first liquid level is 100%, and the second liquid level is 10%.
The experimental procedure for this example is as follows: inflating the instrument wind tank 30 to reach a set pressure, wherein the instrument wind tank 30 provides instrument wind in the test process; the first tank 21 is charged to 0.5MPa (fourth pressure value), the charge valve 211 is closed, the liquid inlet 222 is opened, and the second tank 22 is charged to the first liquid level. The liquid inlet 222 is closed, the regulating valve 221 is opened, the test pipeline is opened, the first storage tank 21 is pressed towards the second storage tank 22, the liquid in the second storage tank 22 enters the test pipeline through pressure, and the simulation test is started. During the test, when the liquid level in the second storage tank 22 is lower than the second liquid level, the liquid inlet 222 is opened again to store water in the second storage tank 22 to the first liquid level, and then the test is repeated.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.
Claims (14)
1. The utility model provides a leak analogue test device in valve which characterized in that includes:
the storage tank group comprises a first storage tank and a second storage tank, the first storage tank and the second storage tank are connected through a regulating valve, the storage tank group is provided with a plurality of inflation modes,
the air compressor is connected with the first storage tank through an inflation valve; and
a test pipeline connected with the downstream of the second storage tank, the test pipeline is connected with a flowmeter group, a valve group to be tested and an emptying pipe group in series in sequence,
in a first inflation mode, the regulating valve is in a normally open state, the inflation valve is opened, and the first storage tank and the second storage tank are inflated to a first pressure value simultaneously; in a second inflation mode, the adjusting valve is closed, the inflation valve is opened, the first storage tank is inflated to a second pressure value first, the inflation valve is closed, the adjusting valve is opened, and the second storage tank is inflated to a third pressure value.
2. The valve internal leakage simulation test device of claim 1, further comprising:
and the instrument air tank is connected with the air compressor and provides instrument air for the storage tank group.
3. The valve internal leakage simulation test device according to claim 1, wherein the flow meter set comprises at least two gas flow meters, and the measuring ranges of the at least two gas flow meters are different; the valve group to be tested comprises a plurality of valves to be tested.
4. The valve internal leakage simulation test device according to claim 1, wherein the storage tank set is provided with a pressure relief valve.
5. The valve internal leakage simulation test device according to claim 1, wherein the second storage tank is provided with a liquid inlet, in a third inflation mode, the adjusting valve is closed, the inflation valve is opened, the first storage tank is inflated to a fourth pressure value, the liquid inlet is opened, and the second storage tank stores water to a first liquid level.
6. The valve endoleak simulation test device of claim 5, wherein the flow meter set comprises at least two liquid flow meters.
7. The valve internal leakage simulation test device according to claim 5, wherein the second storage tank is provided with a liquid level sensor.
8. The valve internal leakage simulation test device according to claim 5, wherein the evacuation pipe set comprises an exhaust pipe and a drain pipe.
9. A valve internal leakage simulation test method, which is characterized by adopting the valve internal leakage simulation test device as claimed in any one of claims 1 to 8, and at least comprises the following steps:
setting test pressure, selecting a valve to be tested, a flowmeter and an inflation mode;
inflating the tank set;
and opening the test pipeline to perform inner leakage detection.
10. The method for simulating valve internal leakage according to claim 9, wherein the step of inflating the reservoir bank further comprises inflating an instrument wind canister prior to the step of inflating the reservoir bank.
11. The method for simulating valve internal leakage according to claim 9, further comprising the steps of: and after the test is finished, emptying the valve internal leakage simulation test device.
12. The method for simulating valve internal leakage according to claim 9, wherein the internal leakage detection is performed by nondestructive testing.
13. The method of claim 12, wherein the non-destructive testing is acoustic emission testing.
14. The method for simulating the valve internal leakage according to claim 9, wherein the device for simulating the valve internal leakage is controlled by a PLC controller.
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| CN114216632A (en) * | 2021-11-24 | 2022-03-22 | 青岛海尔电冰箱有限公司 | Hansen valve integrated equipment |
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| CN109387332A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Stripping pattern draft experiment device and method in Liquid valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114216632A (en) * | 2021-11-24 | 2022-03-22 | 青岛海尔电冰箱有限公司 | Hansen valve integrated equipment |
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