CN111141459A - Test device for simulating sealing performance of flange gasket under coupling working condition - Google Patents
Test device for simulating sealing performance of flange gasket under coupling working condition Download PDFInfo
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- CN111141459A CN111141459A CN202010035309.XA CN202010035309A CN111141459A CN 111141459 A CN111141459 A CN 111141459A CN 202010035309 A CN202010035309 A CN 202010035309A CN 111141459 A CN111141459 A CN 111141459A
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- flange
- pipeline
- sealing performance
- sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/223—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for pipe joints or seals
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Abstract
The invention discloses a test device for simulating the sealing performance of a flange gasket under a coupling working condition, which comprises: sample installing the system, chassis, shaking table, fixed rack, alternating load apply system, leak detection system, control and sensing system, sample installing the system includes: go up flange pipeline, lower flange pipeline, go up flange, lower flange and connecting piece, the system is applyed to alternating load includes: the axial actuator is used for applying vertical alternating load to the sample mounting system, and the radial actuator is used for applying horizontal alternating load to the sample mounting system; the leak detection system includes: the sealed cowling is established at sample installing system outlying leak testing chamber, and the gas leak detector that experimental air supply, be linked together through gas transmission pipeline and experimental air supply, control and sensing system include: displacement sensor, pressure sensor, force sensor, temperature sensor; a processor and a host. The invention can simulate the sealing performance of the flange gasket under the coupling working condition.
Description
Technical Field
The invention relates to the technical field of sealing performance test devices, in particular to a test device for simulating the sealing performance of a flange gasket under a coupling working condition.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
At present, in the whole energy transportation field, it is the biggest challenge at present to ensure that the transportation process is safe and efficient and the reasonable distribution and utilization of resources are achieved. Today, transportation means of stations and pipelines are the most important form of satisfying this demanding requirement in various energy engineering fields.
In a natural gas gathering and transportation system, a gas station occupies a crucial proportion, and the reliability of the natural gas gathering and transportation system can affect the safety of the whole pipeline transportation system to a great extent. In gas stations, flange leaks are the most common form of leakage in stations. Once gas leakage occurs, economic property loss and environmental pollution can be caused, and even serious casualty accidents can be caused. Among them, in a flange gasket connection system, a gasket is the most important sealing element in the entire system. The sealing performance of the whole system is mainly determined by the flange gasket.
Specifically, the axial force that the pressure arouses makes flange clamping face and gasket take place to separate in the medium during operation operating mode, and at this moment, mainly compensate by the resilience volume of gasket, the resilience performance of gasket has decided the compactness of connecting. Creep and relaxation of the gasket are important causes of increased leakage rate of the high temperature sealing connection. Therefore, the sealing performance of the gasket represents a series of relations between the leakage rate and the medium pressure, the residual compression stress of the gasket, the temperature and the like, and is a comprehensive index of the sealing capacity of the flange connection system.
In the actual transportation process, the turbulence of the medium in the pipeline, the pipe diameter change and the existence of the elbow can cause the pipeline vibration and can not be avoided and eliminated. Such vibrations are highly likely to cause wear behaviour of the flange-gasket connection system, especially the gasket. This fretting wear can severely affect and destroy the sealing performance of the entire joint system and gasket. Therefore, for the flange gasket connecting system, under the coupling conditions of alternating load vibration, temperature change and the like, the research on the sealing performance of the flange gasket connecting system is very important, and the method has great significance for improving the sealing reliability of the flange gasket connecting system of the gas station.
Disclosure of Invention
The invention aims to solve the problem of detecting the sealing performance of the flange gasket under the single or coupling working condition, provides a test device for simulating the sealing performance of the flange gasket under the coupling working condition, and particularly can simulate and measure the sealing performance of the flange gasket under the influences of axial force, radial force, vibration with different frequencies, environmental temperature and internal pressure change applied to a flange gasket connecting system.
The embodiment of the application discloses test device of flange gasket sealing performance under simulation coupling operating mode, this test device of flange gasket sealing performance under simulation coupling operating mode includes: sample installing the system, chassis, shaking table, fixed rack, alternating load apply system, leak detection system, control and sensing system, sample installing the system includes: the gasket mounting structure comprises an upper flange pipeline, a lower flange pipeline, an upper flange, a lower flange and a connecting piece, wherein the upper flange pipeline is provided with a first opening end and a first closed end, the upper flange is arranged at the first opening end, the lower flange pipeline is provided with a second opening end and a second closed end, the lower flange is arranged at the second opening end, the upper flange and the lower flange form an annular space for mounting a gasket after being matched through the connecting piece, and a sealing cavity is formed between the upper flange pipeline and the lower flange pipeline; the chassis is fixed with the second closed end of the lower flange pipeline and is arranged on the vibration table; the vibration table is used for providing a seismic source; the fixed rack is used for installing the alternating load applying system on a test bed; the alternating load applying system includes: an axial actuator for applying a vertical alternating load to the specimen mount system, a radial actuator for applying a horizontal alternating load to the specimen mount system; the leak detection system includes: the seal cover is arranged in a leakage detection cavity at the periphery of the sample installation system, the test gas source and the gas leakage detector are communicated with the test gas source through a gas conveying pipeline, and the tail end of the gas conveying pipeline extends into the seal cavity; the control and sensing system comprises: the displacement sensor is used for measuring the displacement of the upper flange pipeline, the pressure sensor is used for measuring the pressure in the sealing cavity, the force sensor is used for measuring the acting force borne by the sample mounting system, and the temperature sensor is used for measuring the temperature of the leakage detection cavity; the processor is connected with the displacement sensor, the pressure sensor, the force sensor and the temperature sensor, and the host is connected with the processor.
In a preferred embodiment, the leak detection chamber and the lower connecting flange are both made of transparent materials.
In a preferred embodiment, the test gas source is a mixed gas of an inert gas and a colored gas.
In a preferred embodiment, the test device for simulating the sealing performance of the flange gasket under the coupling condition further includes: a visualization system, the visualization system comprising: the camera, be used for installing clamping device of camera, and with the display that the host computer is connected.
In a preferred embodiment, the clamping device comprises: the inner ring is sleeved on the lower flange pipeline, and the camera is arranged on the outer ring.
In a preferred embodiment, the inner ring comprises two butt-jointed semicircular rings, one ends of the two semicircular rings are hinged, the other ends of the two semicircular rings are matched in a detachable connection mode, the outer ring is provided with a protective cover, and the camera is arranged in the protective cover.
In a preferred embodiment, the displacement sensor, the pressure sensor and the temperature sensor are all connected with the processor through sensor wiring, an integrated pipeline channel is arranged on the side wall of the upper flange pipeline, and the integrated pipeline channel integrates the gas conveying pipeline and each sensor wiring into a channel.
In a preferred embodiment, a sealing filler is added to the integrated pipeline channel.
In a preferred embodiment, the adjustment range of the vibration parameters of the vibration table comprises: the amplitude range is 0.1mm-3.0mm, and the precision is 0.02 mm; the frequency is 1Hz-20Hz, and the precision is 0.1 Hz; maximum acceleration 2 g.
In a preferred embodiment, the test device for simulating the sealing performance of the flange gasket under the coupling condition further comprises a temperature controller connected with the processor, the temperature controller comprises a high-temperature module and a low-temperature module, the temperature adjusting range of the temperature controller is-30 ℃ to 150 ℃, and the precision is 0.1 ℃.
The invention has the characteristics and advantages that: the testing device for simulating the sealing performance of the flange gasket under the coupling working condition can simulate single or coupled severe working conditions such as different vibration conditions, high and low temperatures, bending deformation and the like, and can test the sealing performance and the leakage condition of a flange gasket connecting system under corresponding conditions. In addition, real-time monitoring, detection and visualization of a sealing interface of the flange gasket can be realized, and comprehensive evaluation of the sealing performance of the gasket and research on leakage are perfected.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
FIG. 1 is a schematic overall structure diagram of a test apparatus for simulating sealing performance of a flange gasket under a coupling condition according to an embodiment of the present disclosure;
FIG. 2 is a front left view of FIG. 1;
FIG. 3 is a right front view of FIG. 1;
FIG. 4 is a rear left view of FIG. 1;
FIG. 5 is a cross-section through the axis of the flange shim parallel to the left plane;
FIG. 6 is a cross-section through the axis of the flange shim parallel to the front face;
FIG. 7 is a two-dimensional view of a flanged pipe;
fig. 8 is a schematic view of a camera and its clamping device.
Description of reference numerals:
1. a test bed;
2. a vibration table;
3. a fixed rack;
4. a sample mounting system; 4.1, mounting a flange pipeline; 4.2, arranging a flange pipeline;
5. a leak detection chamber;
6. a hydraulic actuator; 6.1, an axial actuating mechanism; 6.2, a radial actuator;
7. a gasket;
8. a flange structure; 8.1, an upper flange; 8.2, lower flange;
9. a display;
10. a host;
11. a test gas source;
12. supporting the partition plate;
13. a chassis;
14. a hydraulic source;
15. a temperature controller;
16. a hydraulic line;
17. a force sensor;
18. an integrated pipeline channel;
19. a displacement sensor;
20. a helium gas delivery line;
21. a camera;
22. a processor;
23. a signal output connection;
24. the camera inputs the wiring;
25. a temperature control pipeline;
26. wiring of the displacement sensor;
27. wiring of the force sensor;
28. a pressure sensor wiring;
29. a temperature sensor wiring;
30. a gas leak detector wiring;
31. a temperature sensor;
32. a gas leak detector;
33. a clamping device;
34. a spring;
35. an outer ring;
36. an inner ring.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a test device for simulating the sealing performance of a flange gasket under a coupling working condition, which can simulate and measure the sealing performance of the flange gasket under the influences of axial force, radial force, vibration with different frequencies, environmental temperature and internal pressure change of a flange gasket connecting system.
As shown in fig. 1 to fig. 6, in the test apparatus for simulating the sealing performance of the flange gasket 7 under the coupling condition provided in the embodiment of the present specification, the test apparatus for simulating the sealing performance of the flange gasket 7 under the coupling condition mainly includes: the device comprises a sample mounting system 4, a chassis 13, a vibration table 2, a fixed rack 3, an alternating load applying system, a leakage detection system and a control and sensing system.
Referring to fig. 7, in the present embodiment, the sample mounting system 4 is used to mount the pad 7 to be tested. Specifically, the specimen mounting system 4 may include: an upper flange pipeline 4.1, a lower flange pipeline 4.2, an upper flange 8.1, a lower flange 8.2 and a connecting piece. The upper flange 8.1 and the lower flange 8.2 are the main components of the flange structure 8. The upper flanged pipe 4.1 has a first open end and a first closed end. The upper flange 8.1 is arranged at the first open end. The lower flange conduit 4.2 has a second open end and a second closed end. The lower flange 8.2 is arranged at the second open end. The upper flange 8.1 and the lower flange 8.2 form an annular space for mounting the gasket 7 after being matched through the connecting piece. A sealed cavity is formed between the upper flange pipeline 4.1 and the lower flange pipeline 4.2.
In this embodiment, the chassis 13 may be used to carry the specimen mounting system 4 and the leak detection system. The chassis 13 may be a plate body having a certain thickness. The chassis 13 has opposing upper and lower surfaces. Wherein the upper surface of the chassis 13 is fixed with the second closed end of the lower flange pipeline 4.2 and is mounted on the vibration table 2.
In the present embodiment, the vibration table 2 is used as a seismic source to realize a vibration function, thereby simulating a vibration environment during actual use. The vibration table 2 is the vibration table 2 with adjustable frequency and amplitude, so that different working conditions can be simulated. Specifically, the vibration parameter adjustment range includes: the amplitude range is 0.1-3.0mm, and the precision is 0.02 mm; the frequency is 1-20Hz, and the precision is 0.1 Hz; maximum acceleration 2 g.
Specifically, the vibration parameter is mainly set according to the vibration parameter of the flange gasket 7 in the actual working condition. Due to factors such as fluid in the pipeline, vibration exists in the flange connection. The amplitude and the frequency of the high-frequency electromagnetic wave are respectively approximately within 1.5mm and 10Hz through practical measurement verification. Considering the expandability of the test apparatus, it is helpful to simulate worse conditions when the maximum values of the amplitude and frequency are set at 3mm and 20 Hz.
In the present embodiment, the stationary gantry 3 is used to mount the alternating load applying system on the test stand 1. Specifically, the stationary gantry 3 may be mounted on the test stand 1. The test stand 1 may be provided with a table top, a support baffle 12, and a connection between the table top and the support baffle 12. Wherein the stationary gantry 3 can be located on the table top. An opening may be provided in the table. The opening is used to penetrate the chassis 13. That is, the test stand 1 and the chassis 13 are relatively separated from each other, and vibration is not transmitted. In the use process, the vibration table 2 can not influence the test bed 1 and the test device arranged on the test bed 1 after being started.
In the present embodiment, the alternating load applying system is used to apply alternating vertical and horizontal loads to the specimen mount system 4, thereby simulating the stress on the gasket 7. The alternating load applying system may include: an axial actuator 6.1 for applying a vertical alternating load to the specimen mount system 4, and a radial actuator 6.2 for applying a horizontal alternating load to the specimen mount system 4. The axial actuator 6.1 and the radial actuator 6.2 can be arranged on the stationary gantry 3.
The axial actuator 6.1 and the radial actuator 6.2 may be hydraulic actuators to ensure the stability of the load application and the accuracy of the adjustment. When the axial actuator 6.1 and the radial actuator 6.2 are hydraulic actuators, the hydraulic actuators may be powered by a hydraulic pressure source 14 via a hydraulic line 16. In particular, the torque to which the upper flange pipe 4.1 is subjected can be provided by the axial actuator 6.1, thereby simulating the torque to which the actual pipe is subjected. Bending moment can be provided for the upper flange pipeline 4.1 through the radial actuating mechanism 6.2, so that bending moment applied to an actual pipeline is simulated.
In this embodiment, the leak detection system is used to test whether the gasket 7 fails in sealing under simulated coupling conditions. The leak detection system may include: the seal cover is arranged in a leakage detection cavity 5 at the periphery of the sample installation system 4, a test gas source 11 and a gas leakage detector 32 communicated with the test gas source 11 through a gas conveying pipeline. The end of the gas delivery pipe extends into the sealed cavity for supplying test gas into the sealed cavity. Gas leak detector 32 may be connected to processor 22 by gas leak detector wiring 30.
Wherein the top of the leak detection chamber 5 may be provided with a first opening for mounting an axial actuator 6.1 exerting an axial force. The side of the leak detection gun may be provided with a second opening for mounting a radial actuator 6.2 for applying a radial force. In addition, at least one of the first opening or the second opening may also be used for mounting sensor wiring. Of course, the leak detection chamber 5 may be provided with a third opening different from the first and second openings, and the third opening may be used for installing a sensor wire.
In order to ensure the safety during the test, the test gas source 11 may be an inert gas. For example, helium may be used as the test gas source 11, and heating does not cause any danger. In addition, a small amount of colored gas may be mixed into the inert gas in order to visually observe the leakage of the gas. The leakage detection cavity 5 and the lower flange can be made of transparent materials, such as glass or acrylic, so that the leakage path of gas at a sealing interface can be observed during testing.
The gas leak detector 32 is in communication with the test gas source 11 via a gas delivery line. The tail end of the gas conveying pipeline extends into the sealing cavity; thereby supplying the gas supplied from the test gas source 11 to the capsule. The gas leakage detector 32 is a gas detection device based on a gas sensor, and the gas leakage detector is high in working efficiency, high in detection precision and reliable in result, and detection results can be transmitted to a measuring instrument in real time, so that the gas leakage detector is more convenient and faster.
When the test gas source 11 is helium (i.e., helium source), the gas leak detector 32 is a helium leak detector. In this embodiment, the leak detector is mainly exemplified by a helium leak detector, and other test gases may be adaptively replaced according to this embodiment, which is not described herein again.
The control and sensing system may include: a displacement sensor 19 for measuring the displacement of the upper flange pipeline 4.1, a pressure sensor for measuring the pressure in the sealed cavity, a force sensor 17 for measuring the acting force borne by the sample mounting system 4, and a temperature sensor 31 for measuring the temperature of the leakage detection cavity 5; the displacement sensor 19, the pressure sensor, the force sensor 17, the temperature sensor 31 and the processor 22.
In this embodiment, each sensor may be connected to the processor 22 by a sensor wire. Specifically, the displacement sensor 19 is connected to the processor 22 through a displacement sensor connection 26; the pressure sensor may be connected to the processor 22 by a pressure sensor connection 28; the force sensor 17 may be connected to the processor 22 by a force sensor connection 27 and the temperature sensor 31 may be connected to the processor 22 by a temperature sensor connection 29.
The pressure environment of the gasket 7 can be changed by adjusting the pressure in the injection sealing cavity, and the pressure born by the gasket 7 can be measured by combining a mechanical sensor.
In this embodiment, the control and sensing system may also be provided with a temperature controller 15. The temperature controller 15 may be provided in the leak detection chamber 5 for adjusting the temperature in the leak detection chamber 5, i.e. changing the simulation in which the sample mounting system 4 is located, i.e. achieving a simulation of the ambient temperature in which the gasket 7 is located.
Specifically, the temperature controller 15 can achieve the control effect of high temperature and low temperature in the environment. Wherein, this temperature controller 15 can include high temperature module and low temperature module, and this high temperature module can be realized through resistance wire heating method, and this low temperature module can carry out low temperature control through liquid nitrogen, and this low temperature control module can include liquid nitrogen and temperature control pipeline 25, provides low temperature liquid nitrogen to sealed going to the chamber through this temperature control pipeline 25. The temperature controller 15 may have a temperature adjustment range of-30 to 150 deg.C with a precision of 0.1 deg.C.
In addition, the control and sensing system may further include: a host 10. Information processed by the processor 22 may be communicated to the host 10 via signal output connection 23.
The test device can provide test environments for simulating external environment influences (vibration, bending load, temperature and the like) and different operation working conditions (medium pressure) of the pipeline.
As shown in fig. 8, in one embodiment, the test device may further include: a visualization system. The visualization system includes: the camera comprises a camera 21, a clamping device 33 used for installing the camera 21, and a display 9 connected with the host computer 10.
Wherein the clamping device 33 can be arranged on the transparent lower flange pipe 4.2. In particular, the clamping device 33 may comprise an inner ring 36, an outer ring 35 and a spring 34 arranged between said inner ring 36 and outer ring 35. Wherein the inner ring 36 may comprise two semi-circular rings. One end of each of the two semicircular rings is hinged, and the other end of each of the two semicircular rings can be connected in a detachable connection mode, so that the position of the clamping device 33 can be adjusted, and the height of the camera 21 arranged on the clamping device 33 can be realized. Specifically, the detachable connection mode may be a threaded connection, specifically, a bolt and a nut may be used for a matching connection, and of course, other detachable connection modes may also be used.
A plurality of springs 34 may be provided between the outer ring 35 and the inner ring 36. Because the inner ring 36 is arranged in abutment with the lower flange conduit 4.2. The inner ring 36 also vibrates when the lower flange pipe 4.2 is in a vibrating environment. And through set up a plurality of springs 34 between this outer loop 35 and inner ring 36, can effectively avoid this vibrations transmission to camera 21 to guarantee camera 21's shooting quality, guarantee image acquisition's accuracy.
At least one camera 21 may be disposed on the outer ring 35. The camera 21 may be a high-speed camera that realizes high resolution. Further, in order to ensure the reliability of the camera 21 during use, a protective cover may be disposed outside the camera 21. The protective cover has the characteristics of high temperature resistance and low temperature resistance.
In the present embodiment, the number of the cameras 21 may be one or more. For example, there may be two. When the number of the cameras 21 is two, the two cameras 21 may be symmetrically disposed on the outer ring 35. The camera 21 may be connected to the display 9 via a camera input connection 24, so that the acquired image is presented on the display 9.
In one embodiment, in order to reduce the error of the test result and the processing difficulty, the side surface of the upper flange pipeline 4.1 can be provided with an integrated pipeline channel 18, a gas conveying pipeline and a sensor line are integrated into a passage, the internal and external connection of the leakage detection cavity 5 is completed through the integrated pipeline channel 18, and the sealing performance of the whole device is ensured.
In order to ensure that the plurality of pipelines in the integrated pipeline channel 18 do not affect each other and are sealed, a sealing filler can be added in the integrated pipeline channel 18.
During detection, the tightness of the device needs to be detected, and after a period of time, the leaked gas needs to be detected.
The test device provided by the invention establishes a closed space structure, and can detect the leakage condition under one or more different working conditions. In addition, the experimental result can be observed more intuitively by combining a visualization system.
Any numerical value recited herein includes all values that are incremented by one unit from a lower value to an upper value, provided that there is a separation of at least two units between any value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a test device of flange gasket sealing performance under simulation coupling operating mode which characterized in that includes: a sample mounting system, a chassis, a vibration table, a fixed rack, an alternating load applying system, a leakage detection system and a control and sensing system,
the specimen mounting system includes: the gasket mounting structure comprises an upper flange pipeline, a lower flange pipeline, an upper flange, a lower flange and a connecting piece, wherein the upper flange pipeline is provided with a first opening end and a first closed end, the upper flange is arranged at the first opening end, the lower flange pipeline is provided with a second opening end and a second closed end, the lower flange is arranged at the second opening end, the upper flange and the lower flange form an annular space for mounting a gasket after being matched through the connecting piece, and a sealing cavity is formed between the upper flange pipeline and the lower flange pipeline;
the chassis is fixed with the second closed end of the lower flange pipeline and is arranged on the vibration table;
the vibration table is used for providing a seismic source;
the fixed rack is used for installing the alternating load applying system on a test bed;
the alternating load applying system includes: an axial actuator for applying a vertical alternating load to the specimen mount system, a radial actuator for applying a horizontal alternating load to the specimen mount system;
the leak detection system includes: the seal cover is arranged in a leakage detection cavity at the periphery of the sample installation system, the test gas source is communicated with the gas leakage detector of the test gas source through a gas conveying pipeline, and the tail end of the gas conveying pipeline extends into the seal cavity;
the control and sensing system comprises: the displacement sensor is used for measuring the displacement of the upper flange pipeline, the pressure sensor is used for measuring the pressure in the sealing cavity, the force sensor is used for measuring the acting force borne by the sample mounting system, and the temperature sensor is used for measuring the temperature of the leakage detection cavity; the processor is connected with the displacement sensor, the pressure sensor, the force sensor and the temperature sensor, and the host is connected with the processor.
2. The test device for simulating the sealing performance of the flange gasket under the coupling working condition of claim 1, wherein the leakage detection cavity and the lower connecting flange are made of transparent materials.
3. The device for testing the sealing performance of the flange gasket under the simulated coupling working condition according to claim 2, wherein the test gas source is a mixed gas of an inert gas and a colored gas.
4. The test device for simulating the sealing performance of the flange gasket under the coupling working condition according to claim 3, further comprising: a visualization system, the visualization system comprising: the camera, be used for installing clamping device of camera, and with the display that the host computer is connected.
5. The test device for simulating the sealing performance of the flange gasket under the coupling working condition according to claim 4, wherein the clamping device comprises: the inner ring is sleeved on the lower flange pipeline, and the camera is arranged on the outer ring.
6. The test device for simulating the sealing performance of the flange gasket under the coupling working condition according to claim 5, wherein the inner ring comprises two butted semicircular rings, one ends of the two semicircular rings are hinged, the other ends of the two semicircular rings are matched in a detachable connection mode, the outer ring is provided with a protective cover, and the camera is arranged in the protective cover.
7. The device for testing the sealing performance of the flange gasket under the simulated coupling condition according to claim 1, wherein the displacement sensor, the pressure sensor and the temperature sensor are all connected with the processor through sensor wires, an integrated pipeline channel is arranged on the side wall of the upper flange pipeline, and the integrated pipeline channel integrates the gas conveying pipeline and each sensor wire into a channel.
8. The device for testing the sealing performance of the flange gasket under the simulated coupling working condition according to claim 7, wherein a sealing filler is added into the integrated pipeline channel.
9. The test device for simulating the sealing performance of the flange gasket under the coupling working condition according to claim 1, wherein the vibration parameter adjusting range of the vibration table comprises: the amplitude range is 0.1mm-3.0mm, and the precision is 0.02 mm; the frequency is 1Hz-20Hz, and the precision is 0.1 Hz; maximum acceleration 2 g.
10. The test device for simulating the sealing performance of the flange gasket under the coupling working condition according to claim 1, further comprising a temperature controller electrically connected with the processor, wherein the temperature controller comprises a high-temperature module and a low-temperature module, the temperature adjusting range of the temperature controller is-30-150 ℃, and the precision is 0.1 ℃.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484939A (en) * | 2020-11-30 | 2021-03-12 | 武汉工程大学 | Flange gasket leakproofness simulation detection device |
| CN112525429A (en) * | 2020-11-10 | 2021-03-19 | 东风汽车集团有限公司 | Sealing test device and sealing test method |
| CN113686523A (en) * | 2021-08-25 | 2021-11-23 | 重庆川仪调节阀有限公司 | Gasket sealing performance detection method |
| CN114235298A (en) * | 2021-11-26 | 2022-03-25 | 上海航天精密机械研究所 | Device and method for testing leakage rate of composite material flange in liquid oxygen temperature environment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052518A (en) * | 2011-01-28 | 2011-05-11 | 浙江大学 | Tuned mass damper structure for reducing pipeline vibration |
| CN102435404A (en) * | 2011-09-22 | 2012-05-02 | 航天材料及工艺研究所 | Thermal vibration joint test device and method of flange sealing structure under complicated loaded conditions |
| CN203732220U (en) * | 2013-11-25 | 2014-07-23 | 华东理工大学 | Device for testing high temperature vibration sealing performance of motor vehicle exhaust pipe gasket |
| CN104406751A (en) * | 2014-11-28 | 2015-03-11 | 武汉工程大学 | System for testing high-temperature pipeline flange under action of outer bending moment |
| CN104924143A (en) * | 2015-06-26 | 2015-09-23 | 常州市南飞机械有限公司 | Fastening and clamping device |
| CN209084174U (en) * | 2018-09-14 | 2019-07-09 | 张宝夫 | A kind of vacuum pump interface tube damping device |
-
2020
- 2020-01-14 CN CN202010035309.XA patent/CN111141459B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052518A (en) * | 2011-01-28 | 2011-05-11 | 浙江大学 | Tuned mass damper structure for reducing pipeline vibration |
| CN102435404A (en) * | 2011-09-22 | 2012-05-02 | 航天材料及工艺研究所 | Thermal vibration joint test device and method of flange sealing structure under complicated loaded conditions |
| CN203732220U (en) * | 2013-11-25 | 2014-07-23 | 华东理工大学 | Device for testing high temperature vibration sealing performance of motor vehicle exhaust pipe gasket |
| CN104406751A (en) * | 2014-11-28 | 2015-03-11 | 武汉工程大学 | System for testing high-temperature pipeline flange under action of outer bending moment |
| CN104924143A (en) * | 2015-06-26 | 2015-09-23 | 常州市南飞机械有限公司 | Fastening and clamping device |
| CN209084174U (en) * | 2018-09-14 | 2019-07-09 | 张宝夫 | A kind of vacuum pump interface tube damping device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525429A (en) * | 2020-11-10 | 2021-03-19 | 东风汽车集团有限公司 | Sealing test device and sealing test method |
| CN112484939A (en) * | 2020-11-30 | 2021-03-12 | 武汉工程大学 | Flange gasket leakproofness simulation detection device |
| CN113686523A (en) * | 2021-08-25 | 2021-11-23 | 重庆川仪调节阀有限公司 | Gasket sealing performance detection method |
| CN114235298A (en) * | 2021-11-26 | 2022-03-25 | 上海航天精密机械研究所 | Device and method for testing leakage rate of composite material flange in liquid oxygen temperature environment |
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|---|---|
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