CN220650807U - High-voltage insulation test device for three-phase co-box type GIL/GIS - Google Patents
High-voltage insulation test device for three-phase co-box type GIL/GIS Download PDFInfo
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- CN220650807U CN220650807U CN202322107026.3U CN202322107026U CN220650807U CN 220650807 U CN220650807 U CN 220650807U CN 202322107026 U CN202322107026 U CN 202322107026U CN 220650807 U CN220650807 U CN 220650807U
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000009413 insulation Methods 0.000 title claims abstract description 21
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- 238000009434 installation Methods 0.000 abstract description 5
- 241000208199 Buxus sempervirens Species 0.000 abstract 2
- 239000004020 conductor Substances 0.000 description 9
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Abstract
The utility model provides a high-voltage insulation test device for a three-phase common box type GIL/GIS, which comprises an outer shell, wherein a first panel and a second panel are arranged on two sides of the outer shell, a test device connector is arranged on the first panel, a three-phase electrical interface is arranged on the second panel, and the test device connector is connected with three conductive columns of the three-phase electrical interface through a three-phase conversion device; the three-phase conversion device comprises a turntable assembly, an insulating rod, a first conical gear, a second conical gear, a rotating shaft, a power-on rod and a conductive installation block, wherein the conductive installation block is connected with the inner end of a joint of the test device; one end of the insulating rod is connected with the rotating handle of the rotating assembly, the first conical gear is arranged at the other end of the insulating rod, and the first conical gear is meshed with the second conical gear; the high-voltage insulation test device for the three-phase common-box GIL/GIS is convenient to operate, stable and reliable.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment test devices, and particularly relates to a high-voltage insulation test device for a three-phase co-box GIL/GIS.
Background
The three-phase common box type high-voltage GIL/GIS refers to gas insulated switchgear or a power transmission pipeline in which three-phase conductors are commonly arranged in the same box. The GIL/GIS are subjected to various overvoltage effects in addition to the normal phase voltage of the system in normal operation for a long period of time, so in order to ensure long-term reliability, insulation tests, including lightning impulse and power frequency withstand voltage tests, must be performed on the GIL/GIS and the like in shipment.
The existing three-phase co-box type GIL/GIS high-voltage insulation test device is mainly divided into two types: (1) According to the single-phase wire outlet sleeve test mode, after each phase of test is completed, SF6 gas in the wire outlet sleeve needs to be recovered, another phase is replaced at the cable terminal of a GIS product, the remaining two phases are grounded, then the wire outlet sleeve is vacuumized and filled with SF6 gas, and then a power frequency withstand voltage test is performed. The residual two phases are required to be grounded manually by an external grounding wire during each phase change, and once the residual two phases are forgotten to be grounded or cannot be grounded well, induced potential can be generated during the test, so that the safety of equipment or personnel is endangered by discharging. Thus, the repeated operation not only ensures that the test period is very long, but also greatly reduces the working efficiency and improves the labor cost of the product.
(2) The three-phase conversion device is adopted to connect the connector of the test device and the three-phase electrical appliance interface, and the existing three-phase conversion device has too many transmission mechanisms, particles are generated in the conversion process, and the operation convenience and reliability of the conversion mechanism are influenced. Friction and metal particles are necessarily generated in contact between conductors during phase change, and under the influence of long-term accumulation and electrification tests, the particles move under the action of an electric field and are continuously accumulated on the surface of an insulating part, so that the voltage-resisting capacity of the insulating part is influenced, and finally the reliability of a test device is influenced. The device can not reliably cause discharge, and can impact the insulation of test equipment, thereby influencing the service life and maintenance frequency of the test equipment.
Therefore, a high-voltage insulation test device for the three-phase co-tank type GIL/GIS, which is convenient to operate, stable and reliable, needs to be designed.
Disclosure of Invention
Aiming at the technical problems, the utility model provides the three-phase common box type GIL/GIS high-voltage insulation test device which can rapidly and accurately complete the test process.
The technical scheme of the utility model is as follows: the high-voltage insulation test device for the three-phase co-box type GIL/GIS comprises an outer shell, wherein a first panel and a second panel are arranged on two sides of the outer shell, a test device connector is arranged on the first panel, a three-phase electrical interface is arranged on the second panel, and three conductive columns are arranged at the inner ends of the three-phase electrical interfaces;
the three-phase conversion device comprises a turntable assembly, an insulating rod, a conductive mounting block, a first bevel gear, a second bevel gear, a rotating shaft and a conductive rod, wherein the conductive mounting block is connected with the inner end of a joint of the test device, the rotating shaft is rotatably arranged in the conductive mounting block, one end of the rotating shaft extends out of the conductive mounting block, the second bevel gear is arranged on the rotating shaft, and the conductive rod is arranged at one end of the rotating shaft;
the rotary table assembly is arranged on the side wall of the outer shell, one end of the insulating rod is connected with the rotary handle of the rotary assembly, the first conical gear is arranged at the other end of the insulating rod, and the first conical gear is meshed with the second conical gear;
the shell is also provided with 3 grounding devices, and the grounding devices are arranged corresponding to the conductive columns.
Preferably, the end part of the electric pole is in a beveling shape, a groove is formed in the end face of the electric pole, a first mounting groove is formed in the end face of the electric pole, a first spring is arranged in the first mounting groove, and a first conductive contact is sleeved on the first spring.
Preferably, the grounding device comprises a grounding rod and a storage barrel, wherein the storage barrel is fixed on the outer shell, the grounding rod is arranged in the storage barrel, and the outer end of the grounding rod is connected with the grounding device.
Preferably, the inner end surface of the grounding rod is provided with a mounting hole, a second spring is arranged in the mounting hole, and a second conductive contact is sleeved in the second spring.
Preferably, a particle catcher is arranged in the outer shell.
Preferably, the outer shell is further provided with an observation window.
Preferably, the turntable assembly is provided with a mark.
Preferably, the two ends of the rotating shaft are rotatably arranged on the conductive mounting block through ball bearings.
The beneficial effects of the utility model are as follows: (1) The phase change mechanism is arranged, the electric pole is rotated through the external turntable assembly, the connection of the test device and each phase of conductor is completed, the test process can be completed for 3 times through one clamping, and the test efficiency is greatly improved; (2) 3 independent grounding devices are arranged to ensure reliable grounding of the conductive column; (3) The particle catcher is arranged to effectively catch metal particles generated in the test, so that the long-term reliability of the tool is ensured.
Drawings
Figure 1 is a schematic view of the structure of the present utility model,
figure 2 is a schematic view of another aspect of the present utility model,
figure 3 is a schematic view of the structure of the interior of the present utility model,
figure 4 is a cross-sectional view of the internal structure of the present utility model,
figure 5 is an enlarged view of a portion a of figure 4,
figure 6 is an enlarged partial view of section B of figure 4,
figure 7 is a schematic view of the junction of the first bevel gear and the second bevel gear,
figure 8 is a schematic view of the junction of the conductive post and the conductive post,
in the figure, 1 is an outer casing, 11 is a first panel, 111 is a test device connector, 12 is a second panel, 121 is a conductive post, 1211 is a first spring, 1212 is a first conductive contact, 122 is a three-phase electrical interface, 13 is an observation window, 2 is a three-phase conversion device, 21 is a turntable assembly, 22 is an insulating rod, 23 is a conductive mounting block, 24 is a first bevel gear, 25 is a second bevel gear, 26 is a rotating shaft, 27 is a grounding rod, 3 is a grounding device, 31 is a grounding rod, 311 is a second spring, 312 is a second conductive contact, and 32 is a storage barrel.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The high-voltage insulation test device for the three-phase common box type GIL/GIS shown in fig. 1 to 8 comprises an outer shell 1, wherein a first panel 11 and a second panel 12 are arranged on two sides of the outer shell 1, a test device connector 111 is arranged on the first panel 11, the test device connector is an existing equipment component and is used for butting and measuring parameters with a test device body, a specific structure and an installation mode are not repeated, a three-phase electrical interface 122 is arranged on the second panel 12, the three-phase electrical interface 122 is an existing equipment component and is used for connecting conductors of the three-phase common box type GIL/GIS, the specific structure and the installation mode are not repeated, three conductive columns 121 are arranged at the inner ends of the three-phase electrical interfaces, the conductive columns 121 are existing equipment, the specific structure and the installation mode are not repeated, and the test device connector is connected with the three conductive columns 121 through a three-phase conversion device 2;
referring to fig. 3 to 8, the three-phase conversion device 2 includes a turntable assembly 21, an insulating rod 22, a conductive mounting block 23, a first bevel gear 24, a second bevel gear 25, a rotating shaft 26 and a conductive rod 27, wherein the turntable assembly 21 is a common component, the rotating outer side can drive the inner side to rotate, in this embodiment, a ball turntable is used, the specific structure and the mounting mode are not described again, the conductive mounting block 23 is connected with the inner end of a connector of the test device, the rotating shaft 26 is rotatably arranged in the conductive mounting block 23, in this embodiment, two ends of the rotating shaft 26 are connected with the conductive mounting block 23 through ball bearings, one end of the rotating shaft 26 extends out of the conductive mounting block 23, the second bevel gear 25 is arranged on the rotating shaft 26, and the conductive rod 27 is arranged at one end of the rotating shaft 26; referring to fig. 8, in this embodiment, the end of the conductive rod 27 is in a beveled shape, a groove is formed on the end surface of the conductive rod 27, a first mounting groove is formed on the end surface of the conductive post 121, a first spring 1211 is disposed in the first mounting groove, and a first conductive contact 1212 is sleeved in the first spring 1211. The grooves are matched with the first conductive contacts 1212, so that the first conductive contacts 1212 can be clamped into the grooves, and the flexible contact arrangement can ensure reliable connection between the conductive rod 27 and the conductive column 121, and metal particles are not easy to generate.
The turntable assembly 21 is arranged on the side wall of the outer shell 1, one end of the insulating rod 22 is connected with the rotating handle of the turntable assembly 21, the first conical gear 24 is arranged at the other end of the insulating rod 22, and the first conical gear 24 is meshed with the second conical gear 25; in this embodiment, the first bevel gear 24 and the second bevel gear 25 are both 45 degree bevel gears.
The outer casing 1 is further provided with 3 grounding devices 3, and the grounding devices 3 are arranged corresponding to the conductive posts 121.
Referring to fig. 6 and 8, in this embodiment, the grounding device 3 includes a grounding rod 31 and a housing tube 32, the housing tube 32 is fixed on the outer shell 1, the grounding rod 31 is disposed in the housing tube 32, the outer end of the grounding rod 31 is connected with a grounding device, in this embodiment, an inner end of the grounding rod 31 is provided with a mounting hole, a second spring 311 is disposed in the mounting hole, and a second conductive contact 312 is sleeved in the second spring 311. The front end of the grounding device is sleeved on the second conductive contact 312 of the spring 311, so as to ensure proper pressing force to ensure contact, avoid rigid connection, and avoid scratch or burr on the appearance of the conductive column 121, which would lead to discharge during high-voltage insulation test.
Be equipped with the draw-in groove in the receiving vessel 32, be equipped with the elasticity bump on the grounding rod 31, after the experiment was ended, need pull out grounding rod 31 to outside, grounding rod 31 will withdraw in receiving vessel 32 this moment, avoids producing the influence to the internal electric field of GIL, draw-in groove and elasticity bump cooperation prevent that grounding rod 31 from stretching into shell body 1 from receiving vessel 32 because of the vibration in, draw-in groove and elasticity bump are conventional structure, specific no longer to describe.
A particle catcher is arranged in the outer shell 1. In the commutation operation of the high-voltage conductor and the switching operation of the grounding rod, as the number of operations increases, it is inevitable to generate and accumulate some conductive metal particles. Under the action of the electric field, the conductive metal particles move to a high potential and are finally adsorbed and accumulated on the surface of the insulating basin or the insulating rod. The adsorption of the conductive metal foreign matter on the surface of the insulating member can lead to electric field distortion, weaken the insulating capability of the insulating member, and thus, discharge is initiated after reaching a certain degree. The particle catcher is installed at the corresponding position of the bottom and is a metal arc plate with a certain shape grid, the end part of the metal arc plate is in smooth transition, the distortion of an electric field is reduced to the greatest extent, a gap of about 10mm exists between the metal arc plate and the shell, when fixed metal particles move above the metal arc plate, the electric field intensity above the grid is lower than that of a grid-free area due to the existence of a grid gap, so that the metal particles are unbalanced in the area and fall into the grid under the action of gravity and are caught by the particle catcher. Thereby ensuring the long-term reliability of the tool.
Referring to fig. 1, the outer case 1 is further provided with a viewing window 13. The working condition inside the staff is convenient to observe.
In this embodiment, the outer surface of the turntable assembly 21 is provided with a logo, which facilitates the operator to identify the position to which the power receiving rod 27 is rotated from the outside.
The using method comprises the following steps:
the testing device body is connected with the testing device connector 111, three conductors of the three-phase common box type GIL/GIS are connected with the three-phase electrical interface, SF6 gas is filled in the outer shell 1, the outer rotating handle of the rotating disc assembly 21 is rotated to drive the inner insulating rod 22 to rotate, the first bevel gear 24 on the insulating rod 22 drives the second bevel gear 25 on the rotating shaft 26 to rotate, the rotating shaft 26 drives the grounding rod 27 to rotate to be connected with the conductive column, the grounding rod 31 corresponding to the grounding device 3 is pushed to be connected with the conductive column, then the testing is carried out, after the testing of one phase of conductors is finished, the grounding rod 31 is pulled back, and the grounding rod 27 is rotated to the next phase of conductive column 121 to be tested.
The test device adopts a rotatable three-phase conversion device 2 to replace a forward and backward telescopic straight structure, and controls the rotation angle of a power-on rod 27 through the three-phase conversion device 2 to be respectively contacted and conducted with three conductor terminals in a three-phase common box GIL. Only 1 mechanism is needed to realize the separate connection of the three-phase conductors, thereby avoiding the reconnection assembly of products and complex SF6 gas treatment work and greatly improving the test efficiency.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (8)
1. The high-voltage insulation test device for the three-phase co-box type GIL/GIS comprises an outer shell, wherein a first panel and a second panel are arranged on two sides of the outer shell, a test device connector is arranged on the first panel, a three-phase electrical interface is arranged on the second panel, and three conductive columns are arranged at the inner ends of the three-phase electrical interfaces;
the three-phase conversion device comprises a turntable assembly, an insulating rod, a conductive mounting block, a first bevel gear, a second bevel gear, a rotating shaft and a conductive rod, wherein the conductive mounting block is connected with the inner end of a joint of the test device, the rotating shaft is rotatably arranged in the conductive mounting block, one end of the rotating shaft extends out of the conductive mounting block, the second bevel gear is arranged on the rotating shaft, and the conductive rod is arranged at one end of the rotating shaft;
the rotary table assembly is arranged on the side wall of the outer shell, one end of the insulating rod is connected with the rotary handle of the rotary assembly, the first conical gear is arranged at the other end of the insulating rod, and the first conical gear is meshed with the second conical gear;
the shell is also provided with 3 grounding devices, and the grounding devices are arranged corresponding to the conductive columns.
2. The high-voltage insulation test device for the three-phase co-tank GIL/GIS according to claim 1, wherein the end portion of the electric pole is in a beveled shape, a groove is formed in the end face of the electric pole, a first mounting groove is formed in the end face of the electric pole, a first spring is arranged in the first mounting groove, and a first conductive contact is sleeved on the first spring.
3. The high voltage insulation test apparatus for three-phase common box GIL/GIS according to claim 1, wherein the grounding device comprises a grounding rod and a receiving cylinder, the receiving cylinder is fixed on the outer shell, the grounding rod is disposed in the receiving cylinder, and an outer end of the grounding rod is connected with the grounding device.
4. The high voltage insulation test device for the three-phase common box type GIL/GIS according to claim 3, wherein the inner end surface of the grounding rod is provided with a mounting hole, a second spring is arranged in the mounting hole, and a second conductive contact is sleeved in the second spring.
5. The high voltage insulation test apparatus for three-phase co-tank GIL/GIS according to claim 1, wherein the outer housing is provided with a particle catcher.
6. The high voltage insulation test device for three-phase co-tank GIL/GIS according to claim 1, wherein the outer case is further provided with an observation window.
7. The high voltage insulation test apparatus for three-phase co-tank GIL/GIS according to claim 1, wherein the turntable assembly is provided with a logo.
8. The high voltage insulation test apparatus for three-phase co-tank GIL/GIS according to claim 1, wherein both ends of the rotating shaft are rotatably disposed on the conductive mounting block through ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107026.3U CN220650807U (en) | 2023-08-07 | 2023-08-07 | High-voltage insulation test device for three-phase co-box type GIL/GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107026.3U CN220650807U (en) | 2023-08-07 | 2023-08-07 | High-voltage insulation test device for three-phase co-box type GIL/GIS |
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| Publication Number | Publication Date |
|---|---|
| CN220650807U true CN220650807U (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322107026.3U Active CN220650807U (en) | 2023-08-07 | 2023-08-07 | High-voltage insulation test device for three-phase co-box type GIL/GIS |
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| Country | Link |
|---|---|
| CN (1) | CN220650807U (en) |
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2023
- 2023-08-07 CN CN202322107026.3U patent/CN220650807U/en active Active
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