CN116449152A - Full-working-condition insulation test device for gas insulation equipment under extreme condition - Google Patents
Full-working-condition insulation test device for gas insulation equipment under extreme condition Download PDFInfo
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- CN116449152A CN116449152A CN202211325276.8A CN202211325276A CN116449152A CN 116449152 A CN116449152 A CN 116449152A CN 202211325276 A CN202211325276 A CN 202211325276A CN 116449152 A CN116449152 A CN 116449152A
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- cover
- liquid flow
- oil bath
- circulating oil
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- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 238000009413 insulation Methods 0.000 title claims abstract description 43
- 239000010724 circulating oil Substances 0.000 claims abstract description 48
- 239000003921 oil Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 72
- 238000007789 sealing Methods 0.000 claims description 18
- 239000012212 insulator Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1838—Means for temperature control using fluid heat transfer medium
- B01L2300/185—Means for temperature control using fluid heat transfer medium using a liquid as fluid
Abstract
The invention provides an all-condition insulation test device for gas insulation equipment under extreme conditions, and relates to the technical field of high-voltage transmission line test equipment. The test device comprises a test cavity, a first electrode unit and a second electrode unit, wherein the first electrode unit and the second electrode unit are arranged in the test cavity, a first circulating oil bath device is arranged outside the test cavity, a second circulating oil bath device for heating and cooling is also arranged outside the test cavity, a temperature control cover is connected to the outer wall of the cavity of the test cavity, and the second circulating oil bath device is communicated with the temperature control cover. A vibration motor is arranged in the first guide cylinder far away from the shielding cover side, and a vibration protection cover is arranged outside the vibration motor. The oil reaching the target temperature in the second circulating oil bath equipment circularly flows between the second circulating oil bath equipment and the temperature control cover, so that the temperature of the whole temperature control cover is accurately controlled, and the extreme environments of the local or whole outside of the test cavity at different temperatures in actual conditions are simulated. The vibration motor is positioned in the vibration protection cover and is used for simulating the amplitude and the frequency of the actual first electrode unit.
Description
Technical Field
The invention relates to the technical field of high-voltage transmission line test equipment, in particular to a full-working-condition insulation test device for gas insulation equipment under extreme conditions.
Background
With the rapid development of urban modernization construction and industry, the development of the power industry is also rapid, so that the requirements on reliability and safety of electrical equipment and systems are also higher and higher. The Gas Insulated Switchgear (GIS) has the characteristics of small occupied area, high reliability, good safety, small influence by external factors, convenient maintenance, long overhaul period and the like, and is widely applied.
The GIS device of the prior art has the following disadvantages: on the one hand, the GIS equipment is subjected to high temperature influence for a long time in operation, so that the insulation performance of an insulation device can be reduced, even the breakdown of gas in the GIS and the flashover of the insulator along the surface are caused, the insulation fault is caused, the safety of the system is greatly endangered, meanwhile, the GIS operation external environment is complex and changeable, and the extreme weather environment can cause great influence on the GIS insulation. On the other hand, abnormal vibration of the GIS device is generally caused by current and GIS defect (fault), and since current generally refers to current abnormality caused by external electrical abnormality, it is irrelevant to the GIS device body and can be ignored. The abnormal vibration condition of the GIS equipment is studied mainly from the defects (faults) of the GIS equipment. The GIS equipment faults mainly comprise mechanical faults and insulation faults, wherein the mechanical faults comprise component jamming, damage, loosening of fastening components, contact faults and the like. These faults tend to cause abnormal vibrations of the GIS device during operation, and the vibrations caused by these conditions are typically low frequency vibrations. Vibration caused by insulation defects (faults) of the GIS equipment is different from vibration caused by mechanical faults, and vibration caused by metal spike discharge is directly transmitted to the shell of the GIS equipment, wherein the vibration caused by metal particles is caused by collision of the particles with the GIS shell; the GIS equipment vibration caused by partial discharge, the partial discharge caused by different insulation defects, and the abnormal vibration caused by the partial discharge are different. Meanwhile, the vibration can also affect metal foreign matters, the foreign matters can be vibrated out from the shielding cover and the like, the insulator cracks and the like can be caused, and the long-term vibration can also affect the internal insulation. Therefore, research on the electrical characteristics of the insulator under the conditions of vibration and extreme weather is carried out, and the insulator fault analysis has practical application value in engineering for determining the insulation performance.
For this purpose, the above technical problems need to be further solved.
Disclosure of Invention
The embodiment of the invention aims to provide an all-condition insulation test device for gas insulation equipment under extreme conditions, so as to simulate extreme environments of local or whole external parts of a test cavity at different temperatures in actual conditions and simulate the amplitude and frequency of an actual electrode.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
the invention provides a full-working-condition insulation test device for gas insulation equipment under extreme conditions, which comprises a test cavity, a first electrode unit and a second electrode unit, wherein the first electrode unit and the second electrode unit are arranged in the test cavity;
the first electrode unit comprises a first guide cylinder and a first coil pipe arranged in the first guide cylinder, a first through hole is formed in the cylinder wall of the first guide cylinder close to the first cover plate side, the end part of the first through hole close to the first coil pipe side is communicated with the inlet end of the first coil pipe, the end part of the first through hole far away from the first coil pipe side is communicated with a first connecting pipe, a second through hole is further formed in the cylinder wall of the first guide cylinder close to the first cover plate side, the end part of the second through hole close to the first coil pipe side is communicated with the outlet end of the first coil pipe, the end part of the second through hole far away from the first coil pipe side is communicated with a second connecting pipe, the first connecting pipe is communicated with the first circulating oil bath equipment through a first liquid flow pipe, the second connecting pipe is communicated with the first circulating oil bath equipment through a second liquid flow pipe, and the end part of the first guide cylinder close to the first cover plate side is provided with a shielding cover;
the test cavity is also provided with a second circulating oil bath device for heating and cooling, the outer wall of the cavity of the test cavity is connected with a temperature control cover, and the second circulating oil bath device is communicated with the temperature control cover;
a vibration motor is arranged in the first guide cylinder far away from the shielding cover side, and a vibration protection cover is arranged outside the vibration motor.
Further, the oil liquid reaching the target temperature in the first circulating oil bath equipment sequentially passes through the first liquid flow pipe, the first connecting pipe and the first through hole to enter the first coil pipe, and the oil liquid in the first coil pipe sequentially passes through the second through hole, the second connecting pipe and the second liquid flow pipe at the outlet end of the first coil pipe to flow back into the first circulating oil bath equipment.
Further, the temperature control cover includes:
a cover body;
a hollow portion located within the housing;
a second coil disposed within the hollow portion and connected to the cover;
the third clamp is arranged on the inlet end of the second coil pipe;
the fourth clamp is arranged at the outlet end of the second coil pipe;
one end of the third liquid flow pipe is communicated with the second coil pipe through the third clamp, and the other end of the third liquid flow pipe is communicated with the second circulating oil bath equipment;
and one end of the fourth liquid flow pipe is communicated with the second coil pipe through the fourth clamp, and the other end of the fourth liquid flow pipe is communicated with the second circulating oil bath equipment.
Further, the vibration protection cover includes:
a base connected to an inner side wall of the first guide cylinder away from the shield case side;
a first opening provided in the base near the shield case side;
the top cover is arranged at the first opening and is connected with the base;
wherein, form first space between base with the top cap, vibration motor sets up in the first space.
Further, the sealing unit includes:
the sealing cover is simultaneously arranged between the first liquid flow pipe, the second liquid flow pipe and the first cover plate;
and the second cover plate is arranged on the outer surfaces of the sealing cover and the first cover plate close to the side of the first circulating oil bath equipment.
Further, the first electrode unit further includes:
the first clamp is arranged on the first connecting pipe and clamps the first connecting pipe and the first liquid flow pipe;
and the second clamp is arranged on the second connecting pipe, and the second clamp clamps the second connecting pipe with the second liquid flow pipe.
Further, an operation port for performing manual clamping on the first clamp and the second clamp is formed in the test cavity close to the shielding cover;
and a detachable third cover plate is arranged on the operation port.
Further, an air valve is arranged on the test cavity;
and a fixing piece for connecting the insulator is further arranged on the test cavity.
Further, the second electrode unit includes:
the second contact seat is arranged on the first contact seat far away from the first guide cylinder side;
the second guide cylinder is arranged in the second contact seat;
wherein, the export side of second guide cylinder is connected with the sleeve pipe, the sleeve pipe is connected to external power source through the power cord.
Further, the first coil is absent from the second guide tube.
Compared with the prior art, the full-working-condition insulation test device for the gas insulation equipment under the extreme condition provided by the first aspect of the invention has the advantages that the oil reaching the target temperature in the circulating oil bath equipment enters the coil pipe in the first electrode unit through the first liquid flow pipe, the oil in the coil pipe enters the circulating oil bath equipment through the second liquid flow pipe, the circulation is formed, and the oil keeps constant temperature. Thereby accurately controlling the temperature in the first electrode unit and obtaining the actual working condition of the GIL pipeline in the running state of the temperature gradient field.
The oil reaching the target temperature in the second circulating oil bath equipment circularly flows between the second circulating oil bath equipment and the temperature control cover, so that the temperature of the whole temperature control cover is accurately controlled, and the extreme environments of the local or whole outside of the test cavity at different temperatures in actual conditions are simulated.
The vibration motor is positioned in the vibration protection cover and is used for simulating the actual amplitude and frequency of the first electrode unit.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, wherein like or corresponding reference numerals indicate like or corresponding parts, there are shown by way of illustration, and not limitation, several embodiments of the invention, in which:
FIG. 1 schematically illustrates a cross-sectional view of a gas-insulated apparatus full-duty insulation test apparatus under extreme conditions;
FIG. 2 schematically shows a cross-sectional view of a test chamber;
fig. 3 schematically shows a cross-sectional view of the first electrode unit;
fig. 4 schematically shows a cross-sectional view of the sealing unit;
fig. 5 schematically shows a schematic structural view of a temperature control cover;
FIG. 6 schematically illustrates a cross-sectional view of a vibration protection cover;
reference numerals illustrate:
1. a test chamber; 11. a fixing member; 12. a first cover plate; 13. a vibration protection cover; 131. a base; 132. a first space; 133. a first opening; 134. a top cover; 14. a temperature control cover; 141. a cover body; 142. a hollow portion; 143. a second coil; 144. a third clamp; 145. a fourth clamp; 15. a fourth liquid flow tube; 16. a third liquid flow tube;
2. a second electrode unit; 21. a second guide cylinder; 22. a second contact base;
3. a first electrode unit; 31. a first contact base; 32. a first guide cylinder; 33. a first coil; 34. a first through hole; 35. a second through hole; 36. a second connection pipe; 361. a second clip; 37. a first connection pipe; 371. a first clip; 38. a shield; 39. the method comprises the steps of carrying out a first treatment on the surface of the A vibration motor;
4. an air valve;
5. a first liquid flow tube;
6. a first circulating oil bath apparatus;
7. a second liquid flow tube;
8. a sealing unit; 81. a sealing cover; 82. a second cover plate; 83. a first connector; 84. a second connector;
9. an operation port; 91. a third cover plate;
10. a second circulating oil bath device.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "coupled," "connected," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly via an intermediary. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
With reference to fig. 1 and 2, an embodiment of the invention provides an all-condition insulation test device for a gas insulation device under extreme conditions, which comprises a test cavity 1, a first electrode unit 3 and a second electrode unit 2 positioned in the test cavity 1, wherein a first circulating oil bath device 6 is arranged outside the test cavity 1, and a first cover plate 12 is connected to the end part of the test cavity 1 close to the side of the first circulating oil bath device 6.
The first electrode unit 3 includes a first guide tube 32 and a first coil tube 33 provided in the first guide tube 32, a first through hole 34 is provided in the wall of the first guide tube 32 near the first cover plate 12 side, the end of the first through hole 34 near the first coil tube 33 side is communicated with the inlet end of the first coil tube 33, the end of the first through hole 34 far from the first coil tube 33 side is communicated with a first connecting tube 37, a second through hole 35 is also provided in the wall of the first guide tube 32 near the first cover plate 12 side, the end of the second through hole 35 near the first coil tube 33 side is communicated with the outlet end of the first coil tube 33, the end of the second through hole 35 far from the first coil tube 33 side is communicated with a second connecting tube 36, the first connecting tube 37 is communicated with the first circulating oil bath device 6 through the first liquid flow tube 5, the second connecting tube 36 is communicated with the first circulating oil bath device 6 through the second liquid flow tube 7, and the end of the first guide tube 32 near the first cover plate 12 side is provided with a shielding cover 38.
The test cavity 1 is also provided with a second circulating oil bath device 10 capable of heating and cooling, the outer wall of the cavity of the test cavity 1 is connected with a temperature control cover 14, and the second circulating oil bath device 10 is communicated with the temperature control cover 14.
A vibration motor 39 is provided in the first guide tube 32 on the side away from the shield case 38, and a vibration protection cover 13 is provided outside the vibration motor 39.
Specifically, the oil reaching the target temperature in the first circulating oil bath apparatus 6 enters the first coil 33 in the first electrode unit 3 through the first liquid flow pipe 5, and the oil in the first coil 33 enters the first circulating oil bath apparatus 6 through the second liquid flow pipe 7, so that circulation is formed and the oil is kept at a constant temperature. Thereby accurately controlling the temperature in the first electrode unit 3 and obtaining the actual working condition of the GIL pipeline in the running state of the temperature gradient field.
The oil reaching the target temperature in the second circulating oil bath equipment 10 circularly flows between the second circulating oil bath equipment 10 and the temperature control cover 14, so that the temperature of the whole temperature control cover 14 is accurately controlled, and the extreme environments of the local or whole outside of the test cavity 1 at different temperatures in actual conditions are simulated. The oil liquid has high heat transfer speed and low solidifying point, so that the low-temperature environment below zero can be better simulated.
The vibration motor 39 is located in the vibration protection cover 13 for simulating the actual amplitude and frequency of the first electrode unit 3.
To specifically illustrate the cyclic heating of the first coil 33 and keep the first coil 33 at a constant temperature, in a specific embodiment, in combination with fig. 1 and 2, the oil in the first circulating oil bath apparatus 6 reaching the target temperature sequentially passes through the first liquid flow pipe 5, the first connecting pipe 37 and the first through hole 34 to enter the first coil 33, and the oil in the first coil 33 sequentially passes through the second through hole 35, the second connecting pipe 36 and the second liquid flow pipe 7 at the outlet end of the first coil 33 to flow back into the first circulating oil bath apparatus 6.
In a specific embodiment, as shown in fig. 5, the temperature control housing 14 includes a housing 141, a hollow 142, a second coil 143, a third clamp 144, a fourth clamp 145, a third fluid flow tube 16, and a fourth fluid flow tube 15. The hollow portion 142 is located in the cover 141. A second coil 143 is disposed in the hollow portion 142 and connected to the cover 141. A third clip 144 is disposed on the inlet end of the second coil 143. A fourth clamp 145 is disposed on the outlet end of the second coil 143. And a third fluid flow pipe 16, one end of the third fluid flow pipe 16 is communicated with the second coil 143 through a third clamp 144, and the other end of the third fluid flow pipe 16 is communicated with the second circulating oil bath apparatus 10. And a fourth liquid flow pipe 15, one end of the fourth liquid flow pipe 15 is communicated with the second coil 143 through a fourth clamp 145, and the other end of the fourth liquid flow pipe 15 is communicated with the second circulating oil bath apparatus 10.
Specifically, the oil in the second circulating oil bath apparatus 10 reaching the target temperature enters the second coil 143 through the third liquid flow pipe 16, and the oil in the second coil 143 enters the second circulating oil bath apparatus 10 through the fourth liquid flow pipe 15. So that the temperature of the temperature control cover 14 is precisely controlled to simulate the extreme environments of different temperatures outside the part or the whole of the test chamber 1 in actual situations. Wherein the second circulating oil bath apparatus 10 is used for adjusting the oil inside thereof to a target temperature and performing constant temperature control.
The cover 141 and the second coil 143 can be bonded by epoxy resin glue, which has better fixing function so as to make heat conduction more uniform and effective. The connection between the cover 141 and the second coil 143 can also be made by other connection means known in the art. The cover 141 is made of metal.
The temperature control housing 14 may be any of a semi-annular or annular configuration depending on the needs of the test. When the temperature control cover 14 is of a semi-annular structure, the test chamber 1 is wrapped by using two temperature control covers 14.
The wrapping area of the temperature control cover 14 is determined according to the condition that the test cavity 1 is exposed to the outside. That is, the temperature controlling cap 14 is wrapped around the outer surface of the test chamber 1 exposed to the outside.
To further illustrate the structure of the vibration protection cover 13, in a specific embodiment, in combination with fig. 1, 2 and 6, the vibration protection cover 13 includes a base 131, a first opening 133 and a top cover 134. The base 131 is connected to the inner wall of the first guide tube 32 on the side away from the shield case 38. The first opening 133 is provided in the base 131 on the side close to the shield case 38. A top cover 134 disposed at the first opening 133 and connected with the base 131. Wherein, a first space 132 is formed between the base 131 and the top cover 134, and the vibration motor 39 is disposed in the first space 132.
Specifically, the top cover 134 is detachably connected to the base 131.
More specifically, a sealing ring is provided on the inner wall of the top cover 134 near the base 131, thereby enhancing the sealability between the top cover 134 and the base 131.
More specifically, an inner groove is provided at the center of the outer wall of the top cover 134 to facilitate the opening of the top cover 134 with a tool, thereby facilitating the replacement of the vibration motor 39 or the replacement of components of the vibration motor 39.
The base 131 and the top cover 134 are made of epoxy resin.
The vibration motor 39 can adjust the vibration frequency by remote control. The actual amplitude and frequency of the first guide tube 32 are measured through actual experiments and simulations.
The vibration protection cover 13 in the invention separates the vibration motor 39 and the first coil 33, so that no interference occurs between the vibration motor 39 and the first coil 33.
In a specific embodiment, as shown in fig. 4, the sealing unit 8 includes a sealing cap 81 and a second cover plate 82. A sealing cap 81 is provided between the first and second liquid flow pipes 5 and 7 and the first cover plate 12. A second cover plate 82 is provided on both the seal cover 81 on the side close to the first circulating oil bath apparatus 6 and the outer surface of the first cover plate 12.
Specifically, the seal cover 81 seals and supports between the first and second liquid flow pipes 5 and 7 and the first cover plate 12.
The first liquid flow pipe 5 may be a complete pipe or two pipes forming a pipe according to different application requirements. When the first liquid flow pipe 5 is constituted by two pipes, the two pipes constitute the first liquid flow pipe 5 through the first connection 83 near the seal cover 81. The second liquid flow pipe 7 may be a complete pipe or may be a pipe formed by two pipes. When the second liquid flow pipe 7 is formed by two pipes, the two pipes form the second liquid flow pipe 7 by the second connector 84 near the seal cover 81.
The first liquid flow pipe 5 and the second liquid flow pipe 7 are both made of insulating rubber pipes with target thickness so as to ensure insulation, high pressure resistance and high temperature resistance, and the first liquid flow pipe 5 and the second liquid flow pipe 7 are not deformed and are not softened under high-temperature and low-temperature fluid when the vacuumizing equipment performs vacuumizing, and can be bent within a target range. The first liquid flow pipe 5 and the second liquid flow pipe 7 can be used for oil passing under high pressure.
The second cover plate 82 is connected with the sealing cover 81 and the first cover plate 12 at the same time, so that the sealing cover 81 is fixed and sealed.
Further, the second cover 82 is provided with a sealing ring.
In a specific embodiment, as shown in fig. 4, the first electrode unit 3 further includes: the first clip 371 is provided on the first connecting tube 37, and the first clip 371 performs the clip connection of the first connecting tube 37 and the first liquid flow tube 5. The second clamp 361 is disposed on the second connecting pipe 7, and the second clamp 361 clamps the second connecting pipe 36 and the second liquid flow pipe 7.
Specifically, the first clip 371 facilitates the connection between the first liquid flow pipe 5 and the first connection pipe 37, and enhances the sealing performance between the first liquid flow pipe 5 and the first connection pipe 37.
The second clip 361 facilitates the connection between the second fluid flow tube 7 and the second connection tube 36 and enhances the sealing performance between the second fluid flow tube 7 and the second connection tube 36.
The first liquid flow pipe 5 and the second liquid flow pipe 7 are simultaneously connected with the circulating oil bath equipment 6 to form a circulating heating device with controllable heating temperature.
The first liquid flow pipe 5 and the second liquid flow pipe 7 are all made of high-insulation rubber tubes in the prior art, so that the insulation performance of the device is guaranteed.
In a specific embodiment, as shown in fig. 4, an operation port 9 for manually clamping the first clamp 371 and the second clamp 361 is provided on the test chamber 1 near the shielding case 38. The operation port 9 is provided with a detachable third cover plate 91.
Specifically, after the third cover plate 91 is opened, a test operator can enter the operation opening 9 through a tool or a hand to manually clamp the first clamp 371 and the second clamp 361, clamp the first liquid flow tube 5 with the first connecting tube 37 and clamp the second liquid flow tube 7 with the second connecting tube 36, so as to facilitate connection between the first liquid flow tube 5 and the second liquid flow tube 7 and the coil 33.
In a specific embodiment, as shown in fig. 4, the test chamber 1 is provided with a gas valve 4.
The test chamber 1 is also provided with a fixing piece 11 for connecting an insulator.
Specifically, the gas valve 4 can realize filling of the test chamber 1 with the target gas. The test chamber 1 can be tested in SF6, CF4, N2 and environment-friendly gas environments, and can be subjected to long-term withstand voltage test and insulation breakdown test.
One end of the insulator is fixed in the fixing member 11, and the other end of the insulator is connected to the first contact block 31, thereby further fixing the first contact block 31.
The test chamber 1 can be applied to various voltage forms such as alternating voltage, direct voltage, impulse voltage and the like.
In the invention, the test cavity 1 can realize insulation test under heating condition, and can be used for breakdown test and partial discharge test.
In a specific embodiment, as shown in fig. 4, the second electrode unit 2 includes a second contact base 22 and a second guide cylinder 21. The second contact base 22 is provided on the first contact base 22 on the side away from the first guide cylinder 32. The second guide 21 is provided in the second contact base 22. Wherein a sleeve is connected to the outlet side of the second guide 21, the sleeve being connected to an external power source through a power line.
Specifically, the electricity of the external power source is transmitted to the second guide 21 and the first guide 32 through the high-voltage lead wire on the sleeve as a high-voltage electrode.
In a specific embodiment, as shown in fig. 4, there is no first coil in the second guide.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The full-working-condition insulation test device for the gas insulation equipment under extreme conditions is characterized by comprising a test cavity, a first electrode unit and a second electrode unit, wherein the first electrode unit and the second electrode unit are positioned in the test cavity;
the first electrode unit comprises a first guide cylinder and a first coil pipe arranged in the first guide cylinder, a first through hole is formed in the cylinder wall of the first guide cylinder close to the first cover plate side, the end part of the first through hole close to the first coil pipe side is communicated with the inlet end of the first coil pipe, the end part of the first through hole far away from the first coil pipe side is communicated with a first connecting pipe, a second through hole is further formed in the cylinder wall of the first guide cylinder close to the first cover plate side, the end part of the second through hole close to the first coil pipe side is communicated with the outlet end of the first coil pipe, the end part of the second through hole far away from the first coil pipe side is communicated with a second connecting pipe, the first connecting pipe is communicated with the first circulating oil bath equipment through a first liquid flow pipe, the second connecting pipe is communicated with the first circulating oil bath equipment through a second liquid flow pipe, and the end part of the first guide cylinder close to the first cover plate side is provided with a shielding cover;
the test cavity is also provided with a second circulating oil bath device for heating and cooling, the outer wall of the cavity of the test cavity is connected with a temperature control cover, and the second circulating oil bath device is communicated with the temperature control cover;
a vibration motor is arranged in the first guide cylinder far away from the shielding cover side, and a vibration protection cover is arranged outside the vibration motor.
2. The full-working-condition insulation test device for the gas insulation equipment under the extreme condition according to claim 1, wherein the oil liquid reaching the target temperature in the first circulating oil bath equipment sequentially passes through the first liquid flow pipe, the first connecting pipe and the first through hole to enter the first coil pipe, and the oil liquid in the first coil pipe sequentially passes through the second through hole, the second connecting pipe and the second liquid flow pipe at the outlet end of the first coil pipe to flow back into the first circulating oil bath equipment.
3. The full-condition insulation test device for a gas-insulated apparatus under extreme conditions according to claim 1, wherein the temperature control cover comprises:
a cover body;
a hollow portion located within the housing;
a second coil disposed within the hollow portion and connected to the cover;
the third clamp is arranged on the inlet end of the second coil pipe;
the fourth clamp is arranged at the outlet end of the second coil pipe;
one end of the third liquid flow pipe is communicated with the second coil pipe through the third clamp, and the other end of the third liquid flow pipe is communicated with the second circulating oil bath equipment;
and one end of the fourth liquid flow pipe is communicated with the second coil pipe through the fourth clamp, and the other end of the fourth liquid flow pipe is communicated with the second circulating oil bath equipment.
4. The full-condition insulation test device for a gas insulated apparatus under extreme conditions according to claim 1, wherein the vibration protection cover comprises:
a base connected to an inner side wall of the first guide cylinder away from the shield case side;
a first opening provided in the base near the shield case side;
the top cover is arranged at the first opening and is connected with the base;
wherein, form first space between base with the top cap, vibration motor sets up in the first space.
5. The full-condition insulation test device for a gas-insulated apparatus under extreme conditions according to claim 1, wherein the sealing unit comprises:
the sealing cover is simultaneously arranged between the first liquid flow pipe, the second liquid flow pipe and the first cover plate;
and the second cover plate is arranged on the outer surfaces of the sealing cover and the first cover plate close to the side of the first circulating oil bath equipment.
6. The full-condition insulation test device for a gas insulated apparatus under extreme conditions according to claim 1, wherein the first electrode unit further comprises:
the first clamp is arranged on the first connecting pipe and clamps the first connecting pipe and the first liquid flow pipe;
and the second clamp is arranged on the second connecting pipe, and the second clamp clamps the second connecting pipe with the second liquid flow pipe.
7. The full-working-condition insulation test device for the gas-insulated equipment under the extreme condition according to claim 6, wherein an operation port for manually clamping the first clamp and the second clamp is arranged on the test cavity near the shielding cover;
and a detachable third cover plate is arranged on the operation port.
8. The full-condition insulation test device for the gas insulation equipment under the extreme condition according to claim 1, wherein,
the test cavity is provided with an air valve;
and a fixing piece for connecting the insulator is further arranged on the test cavity.
9. The full-condition insulation test device for a gas-insulated apparatus under extreme conditions according to claim 1, wherein the second electrode unit comprises:
the second contact seat is arranged on the first contact seat far away from the first guide cylinder side;
the second guide cylinder is arranged in the second contact seat;
wherein, the export side of second guide cylinder is connected with the sleeve pipe, the sleeve pipe is connected to external power source through the power cord.
10. The full-length insulation test device for a gas insulated apparatus under extreme conditions according to claim 9, wherein the first coil is absent from the second guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211325276.8A CN116449152A (en) | 2022-10-27 | 2022-10-27 | Full-working-condition insulation test device for gas insulation equipment under extreme condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211325276.8A CN116449152A (en) | 2022-10-27 | 2022-10-27 | Full-working-condition insulation test device for gas insulation equipment under extreme condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116449152A true CN116449152A (en) | 2023-07-18 |
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ID=87130864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211325276.8A Pending CN116449152A (en) | 2022-10-27 | 2022-10-27 | Full-working-condition insulation test device for gas insulation equipment under extreme condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116449152A (en) |
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2022
- 2022-10-27 CN CN202211325276.8A patent/CN116449152A/en active Pending
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