CN110864897A - Aging test system of true sealing ring - Google Patents

Aging test system of true sealing ring Download PDF

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Publication number
CN110864897A
CN110864897A CN201911307003.9A CN201911307003A CN110864897A CN 110864897 A CN110864897 A CN 110864897A CN 201911307003 A CN201911307003 A CN 201911307003A CN 110864897 A CN110864897 A CN 110864897A
Authority
CN
China
Prior art keywords
holes
flange
hole
test
sealing ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911307003.9A
Other languages
Chinese (zh)
Inventor
黄若栋
周福升
高超
杨芸
王国利
刘桂婵
彭家宁
黄云光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSG Electric Power Research Institute
Electric Power Research Institute of Guangxi Power Grid Co Ltd
Original Assignee
CSG Electric Power Research Institute
Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CSG Electric Power Research Institute, Electric Power Research Institute of Guangxi Power Grid Co Ltd filed Critical CSG Electric Power Research Institute
Priority to CN201911307003.9A priority Critical patent/CN110864897A/en
Publication of CN110864897A publication Critical patent/CN110864897A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • G01M13/005Sealing rings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating 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
    • G01M3/22Investigating 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/002Test chambers

Abstract

The invention discloses an aging test system of a true sealing ring, which comprises a tested module and a detection module; the tested module comprises a top cover plate, a test flange, an inflatable flange, a base plate, a plurality of bolts and nuts; the top cover plate, the test flange, the inflatable flange and the bottom cover plate are all provided with the same number of through holes with the same inner diameter, the same positions and uniform distribution, and the top cover plate, the test flange, the inflatable flange and the base plate are connected with nuts through the bolts; the detection module comprises a sulfur hexafluoride gas leak detector for detecting the gas leakage rate of the tested true sealing ring. The aging test system for the true sealing ring accurately simulates the working state of the true sealing ring under the actual working condition, can effectively detect the performance change data of the measured true sealing ring under the condition of multiple aging factors, and has the advantages of reasonable structure arrangement of the whole test system and safe, convenient and reliable test process.

Description

Aging test system of true sealing ring
Technical Field
The invention relates to the technical field of sealing ring tests, in particular to an aging test system for a true sealing ring.
Background
In the process of power transmission, sulfur hexafluoride Gas with certain pressure is filled in a Gas Insulated Switchgear (GIS) to serve as an insulating and arc extinguishing medium, the high-voltage electrical appliance is isolated from the outside to protect the high-voltage electrical appliance, and the true sealing ring serves as a key sealing element of the butting face of a GIS shell and a basin-type insulator to prevent the leakage of the internal insulating medium.
In practical application, because the sealing ring is influenced by different working conditions such as temperature, humidity, salt fog, oxygen for a long time, the sealing performance is easy to decline or lose efficacy, so that the leakage of internal media is caused, and the safe and stable operation of GIS equipment is seriously threatened.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an aging test system for a true seal ring, which can effectively measure the performance variation of the true seal ring under multiple aging factors.
In order to achieve the above object, an embodiment of the present invention provides an aging test system for a true seal ring, which includes a module to be tested and a detection module.
The tested module comprises a top cover plate, a test flange, an inflatable flange, a base plate, a plurality of bolts and nuts; the top cover plate, the test flange, the inflatable flange and the base plate are sequentially arranged from top to bottom.
The top cover plate is provided with a plurality of first through holes penetrating through the upper surface and the lower surface of the top cover plate, and the first through holes are uniformly distributed along the circumferential direction of the top cover plate.
The test flange is provided with second through holes which penetrate through the upper surface and the lower surface of the test flange and are the same as the first through holes in number; the positions of the second through holes correspond to the positions of the first through holes one by one, and the inner diameters of the second through holes are the same as those of the first through holes; and the upper surface of the test flange is provided with a mounting groove for mounting the tested true sealing ring along the circumferential direction of the test flange.
Third through holes which penetrate through the upper surface and the lower surface of the inflatable flange and are the same as the second through holes in number are formed in the inflatable flange; the positions of the third through holes correspond to the positions of the second through holes one by one, and the inner diameter of the third through holes is the same as that of the second through holes; and an inflation hole is formed in the side face of the inflation flange along the direction perpendicular to the third through hole.
Fourth through holes which penetrate through the upper surface and the lower surface of the base plate and are the same as the third through holes in number are formed in the base plate; the positions of the plurality of fourth through holes and the positions of the plurality of third through holes are in one-to-one correspondence, and the inner diameter of each fourth through hole is the same as that of each third through hole.
The quantity of bolt and nut with the quantity of first through-hole is the same, and every the screw rod of bolt all passes corresponding in proper order first through-hole, the second through-hole third through-hole with the fourth through-hole, and with first through-hole, the second through-hole the third through-hole with fourth through-hole threaded connection, and through corresponding the nut is fixed.
The detection module comprises a sulfur hexafluoride gas leak detector for detecting the gas leakage rate of the tested true sealing ring.
As a modification of the above, the number of the first through holes is 6.
As an improvement of the scheme, a sealing cover is arranged at the air inflation hole.
As an improvement of the scheme, an air inlet valve is arranged at the air inflation hole.
As an improvement of the scheme, the air inlet valve is a normally closed spring type air inlet valve.
As an improvement of the above scheme, the detection module further comprises a temperature and humidity circulating salt fog tank, and the temperature and humidity circulating salt fog tank is used for providing different environmental parameters, so that the sulfur hexafluoride gas leak detector detects the gas leakage rate of the corresponding measured true seal ring under different environmental parameters.
According to the aging test system for the true sealing ring, provided by the embodiment of the invention, the tested module with a reasonable structure is constructed, wherein the tested module adopts the top cover plate, the test flange, the inflation flange and the base plate which are arranged in an overlapped mode, and is structurally fixed by a plurality of bolts and nuts with specific numbers, so that the true sealing ring of the tested module is detected by filling sulfur hexafluoride gas with rated pressure in the measuring process and utilizing a cover-buckling method and a sulfur hexafluoride gas leak detector, the whole test system accurately simulates the working state of the true sealing ring under the actual working condition, the performance change data of the tested true sealing ring can be accurately detected, and the sealing performance of the tested true sealing ring under the multi-factor condition can be further analyzed. The whole test system is reasonable in structure arrangement, and the test process is safe, convenient and reliable.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a measured module of an aging test system for a true seal ring according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a roof panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a test flange provided in an embodiment of the present invention;
FIG. 4 is a schematic structural view of an inflatable flange provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a base plate according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments of the present invention, and do not indicate or imply that the devices or components referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
In the description of the embodiments of the present invention, it is to be understood that the terms "first," "second," "third," and "fourth" are used merely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations or relative importance.
In describing embodiments of the present invention, it should be noted that the invention may be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In addition, the invention is operational with numerous general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multi-processor apparatus, distributed computing environments that include any of the above devices or equipment, and the like. 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
An embodiment of the present invention provides an aging test system for a true sealing ring, which includes a tested module and a detection module, specifically, please refer to fig. 1, which is a schematic structural diagram of the tested module of the aging test system for the true sealing ring provided by the embodiment of the present invention, wherein, as shown in the drawing, the tested module includes a top cover plate, a test flange, an inflatable flange, a base plate, a plurality of bolts and nuts; the top cover plate, the test flange, the inflatable flange and the base plate are sequentially arranged from top to bottom.
Specifically, referring to fig. 2, a schematic structural diagram of a top cover plate according to an embodiment of the present invention is shown, where the top cover plate is provided with a plurality of first through holes penetrating through upper and lower surfaces of the top cover plate, and the plurality of first through holes are uniformly distributed along a circumferential direction of the top cover plate.
Specifically, please refer to fig. 3, which is a schematic structural diagram of a test flange according to an embodiment of the present invention, wherein second through holes, which penetrate through the upper and lower surfaces and are the same in number as the first through holes, are formed in the test flange; the positions of the second through holes correspond to the positions of the first through holes one by one, and the inner diameters of the second through holes are the same as those of the first through holes; as shown in fig. 2, other through holes (as indicated by dashed circles in the figure) formed in the test flange are used for leak detection or fixation, and the function is the same as that in the prior art. And the upper surface of the test flange is provided with a mounting groove for mounting the tested true sealing ring along the circumferential direction of the test flange.
Specifically, please refer to fig. 4, which is a schematic structural diagram of an inflatable flange according to an embodiment of the present invention, wherein third through holes, which penetrate through the upper and lower surfaces and are the same in number as the second through holes, are formed in the inflatable flange; the positions of the third through holes correspond to the positions of the second through holes one by one, and the inner diameter of the third through holes is the same as that of the second through holes; and an inflation hole is formed in the side face of the inflation flange along the direction perpendicular to the third through hole.
Specifically, please refer to fig. 5, which is a schematic structural diagram of a base plate according to an embodiment of the present invention, wherein the base plate is provided with fourth through holes penetrating through upper and lower surfaces thereof, and the number of the fourth through holes is the same as that of the third through holes; the positions of the plurality of fourth through holes and the positions of the plurality of third through holes are in one-to-one correspondence, and the inner diameter of each fourth through hole is the same as that of each third through hole.
The number of the bolts and the number of the nuts (not shown in the figure) are the same as that of the first through holes, and each screw rod of each bolt sequentially penetrates through the corresponding first through hole, the second through hole, the third through hole and the fourth through hole, is in threaded connection with the first through hole, the second through hole, the third through hole and the fourth through hole, and is fixed through the corresponding nuts.
The detection module (not shown) comprises a sulfur hexafluoride gas leak detector for detecting the gas leakage rate of the true seal ring to be detected.
According to the aging test system for the true sealing ring, provided by the embodiment of the invention, the tested module with a reasonable structure is constructed, wherein the tested module adopts the top cover plate, the test flange, the inflation flange and the base plate which are arranged in an overlapped mode, and is structurally fixed by a plurality of bolts and nuts with specific numbers, so that the true sealing ring of the tested module is detected by filling sulfur hexafluoride gas with rated pressure in the measuring process and utilizing a cover-buckling method and a sulfur hexafluoride gas leak detector, the whole test system accurately simulates the working state of the true sealing ring under the actual working condition, the performance change data of the tested true sealing ring can be accurately detected, and the sealing performance of the tested true sealing ring under the multi-factor condition can be further analyzed. The whole test system is reasonable in structure arrangement, and the test process is safe, convenient and reliable.
It should be noted that, the aging test system for the true sealing ring provided by the embodiment of the present invention specifically includes the following steps: assembling all parts of a module to be tested one by one, vacuumizing, filling sulfur hexafluoride gas with rated pressure (the pressure value is adjusted according to the actual working condition, and can be preferably 0.1MPa, 0.4MPa and 0.7MPa), detecting and calculating the gas leakage rate of the true sealing ring to be tested by adopting a cover-buckling method in the prior art, and specifically determining the initial gas leakage rate according to the following formula:
wherein Δ C is the increase in the concentration of the leaking gas from the start of the experiment to the end of the experiment; Δ t is the time of measurement; vmIs the volume of the enclosure; v1Is the volume of the sample; p is the absolute atmospheric pressure and is 0.1 MPa.
Preferably, in the above embodiment, the number of the first through holes is 6. Of course, the number of the through holes can be adjusted according to actual working conditions.
Preferably, in the above embodiment, a sealing cover (not shown) is disposed at the inflation hole to improve the sealing performance of the inflation hole and ensure the accuracy of the test data.
Preferably, in the above embodiment, an air inlet valve is provided at the inflation hole.
Preferably, in the above embodiment, the air intake valve is a normally closed spring type air intake valve.
Preferably, in the above embodiment, the detection module further includes a temperature and humidity circulating salt fog tank, and the temperature and humidity circulating salt fog tank is configured to provide different environmental parameters, so that the sulfur hexafluoride gas leak detector detects the gas leakage rate of the corresponding true seal ring to be detected under different environmental parameters.
It should be noted that, when the cover-buckling method is used for detection, the adopted sealing cover is a metal cover or a plastic film which is larger than the tank body to be detected, so as to better cover the whole module to be detected to collect the leaked gas. In the test process, preferably, after the tested module is inflated to the rated pressure of 6h, the cover is buckled for 24 h; meanwhile, the sensitivity of the sulfur hexafluoride gas leak detector is preferably not lower than 10-8The leak detector of (2) to improve the accuracy of data acquisition; the temperature and humidity circulating salt fog box is used for providing various aging factors so as to explore the influence of the aging factors such as salt fog and oxygen on the aging degree of the true seal ring to be detected in the operation process, and preferably, the temperature value of the temperature and humidity circulating salt fog box is 50 ℃, 80 ℃ and 120 ℃; humidity values of 10%, 50% and 98%; the mass percentage concentration of the salt solution is (5 +/-1)%; the test time of the whole aging test system is preferably 48h, 96h and 192h, so that the aging degree of the tested true sealing ring under different environmental factor conditions can be obtained.
According to the aging test system for the true sealing ring, provided by the embodiment of the invention, the tested module with a reasonable structure is constructed, wherein the tested module adopts the top cover plate, the test flange, the inflation flange and the base plate which are arranged in an overlapped mode, and is structurally fixed by a plurality of bolts and nuts with specific numbers, so that the true sealing ring of the tested module is detected by a buckle closure method and a sulfur hexafluoride gas leak detector through filling sulfur hexafluoride gas with rated pressure in the measuring process, the whole test system accurately simulates the working state of the true sealing ring under the actual working condition, the performance change data of the tested true sealing ring can be accurately detected, and the sealing performance of the tested true sealing ring under the multi-factor condition can be further analyzed. The whole test system is reasonable in structure arrangement, and the test process is safe, convenient and reliable.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (6)

1. An aging test system of a true sealing ring is characterized by comprising a tested module and a detection module;
the tested module comprises a top cover plate, a test flange, an inflatable flange, a base plate, a plurality of bolts and nuts; the top cover plate, the test flange, the inflatable flange and the base plate are sequentially arranged from top to bottom;
the top cover plate is provided with a plurality of first through holes penetrating through the upper surface and the lower surface of the top cover plate, and the first through holes are uniformly distributed along the circumferential direction of the top cover plate;
the test flange is provided with second through holes which penetrate through the upper surface and the lower surface of the test flange and are the same as the first through holes in number; the positions of the second through holes correspond to the positions of the first through holes one by one, and the inner diameters of the second through holes are the same as those of the first through holes;
an installation groove for installing a true seal ring to be tested is formed in the upper surface of the test flange along the circumferential direction of the test flange;
third through holes which penetrate through the upper surface and the lower surface of the inflatable flange and are the same as the second through holes in number are formed in the inflatable flange; the positions of the third through holes correspond to the positions of the second through holes one by one, and the inner diameter of the third through holes is the same as that of the second through holes;
an inflation hole is formed in the side face of the inflation flange along the direction perpendicular to the third through hole;
fourth through holes which penetrate through the upper surface and the lower surface of the base plate and are the same as the third through holes in number are formed in the base plate; the positions of the plurality of fourth through holes correspond to the positions of the plurality of third through holes one by one, and the inner diameter of each fourth through hole is the same as that of each third through hole;
the number of the bolts and the nuts is the same as that of the first through holes, and the screw rod of each bolt sequentially penetrates through the corresponding first through hole, the second through hole, the third through hole and the fourth through hole, is in threaded connection with the first through hole, the second through hole, the third through hole and the fourth through hole, and is fixed through the corresponding nuts;
the detection module comprises a sulfur hexafluoride gas leak detector for detecting the gas leakage rate of the tested true sealing ring.
2. The system for testing the aging of a true seal ring according to claim 1, wherein the number of the first through holes is 6.
3. The system for testing the aging of a true seal ring according to claim 1, wherein a sealing cap is provided at the inflation hole.
4. The system for testing the degradation of a true seal ring according to claim 1, wherein an air inlet valve is provided at the air inlet.
5. The system for testing the aging of a true seal ring according to claim 4, wherein the air inlet valve is a normally closed spring type air inlet valve.
6. The aging test system for the genuine sealing ring according to claim 1, wherein the detection module further comprises a temperature and humidity circulating salt fog tank, and the temperature and humidity circulating salt fog tank is used for providing different environmental parameters, so that the sulfur hexafluoride gas leak detector detects the gas leakage rate of the corresponding tested genuine sealing ring under different environmental parameters.
CN201911307003.9A 2019-12-16 2019-12-16 Aging test system of true sealing ring Pending CN110864897A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201911307003.9A CN110864897A (en) 2019-12-16 2019-12-16 Aging test system of true sealing ring
PCT/CN2020/099138 WO2021120583A1 (en) 2019-12-16 2020-06-30 Vacuum sealing ring aging test system

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WO2021120583A1 (en) * 2019-12-16 2021-06-24 南方电网科学研究院有限责任公司 Vacuum sealing ring aging test system

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WO2021120583A1 (en) * 2019-12-16 2021-06-24 南方电网科学研究院有限责任公司 Vacuum sealing ring aging test system

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