CN219799657U - GIS is with insulating pull rod high-voltage test device - Google Patents
GIS is with insulating pull rod high-voltage test device Download PDFInfo
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- CN219799657U CN219799657U CN202320928022.9U CN202320928022U CN219799657U CN 219799657 U CN219799657 U CN 219799657U CN 202320928022 U CN202320928022 U CN 202320928022U CN 219799657 U CN219799657 U CN 219799657U
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- pull rod
- shielding cover
- insulating pull
- voltage test
- connecting unit
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 230000009466 transformation Effects 0.000 claims abstract description 5
- 239000012212 insulator Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 229910018503 SF6 Inorganic materials 0.000 description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to the technical field of electrical detection, in particular to an insulating pull rod high-voltage test device for a GIS. The device comprises a high-voltage test sleeve, an insulating pull rod test unit and a connecting unit, wherein a vertical conductor in the high-voltage test sleeve is connected with a voltage transformation device; the insulation pull rod test unit comprises a shell, an upper shielding cover, a lower shielding cover and at least two insulation pull rods which are vertically arranged, wherein at least one cross rod is correspondingly arranged on the upper shielding cover and the lower shielding cover, and two ends of each insulation pull rod are respectively sleeved on the cross rods of the upper shielding cover and the lower shielding cover; the bottom of the connecting unit is provided with a supporting rack, a transverse conductor is arranged in the supporting rack, one end of the transverse conductor is electrically connected with the vertical conductor, and the other end of the transverse conductor is electrically connected with the upper shielding cover; the lower shielding cover is connected with the shell through a grounding wire. When the high-voltage test is carried out on the insulating pull rod, the insulating pull rod can be vertically installed, the insulating pull rod is prevented from being damaged, the whole size of the test device is greatly reduced, and the cost is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of electrical detection, in particular to an insulating pull rod high-voltage test device for a GIS.
Background
The insulating pull rod is a key part of the internal insulation of gas-insulated closed metal switch equipment (GIS for short), is widely used in the GIS, the electrical performance of the GIS must be ensured, the GIS is isolated from the outside air through a metal shell, sulfur hexafluoride insulating gas with certain pressure is filled in the GIS, and the insulating pull rod is driven by an operating mechanism in the GIS to realize the connection and disconnection of the GIS (circuit breaker, isolating switch and grounding switch). The insulation pull rod used in the GIS must be insulated between the electrified high-voltage conductor and the insulation pull rod. If bubbles, impurities and the like exist in the insulating pull rod, partial discharge can be caused when the insulating pull rod is electrified to run, defects are increased continuously, and finally, the insulating performance is damaged, so that GIS discharge accidents are caused.
The voltage withstand test and the partial discharge test of the insulating pull rod can be used for checking whether the insulating pull rod has defects or not, and are important means for checking the electrical performance of the insulating pull rod, and the insulating pull rod is a mass-produced product, so that the single insulating pull rod has low test efficiency. Therefore, it is an object to develop a test apparatus capable of mass-testing and avoiding environmental interference during testing. CN202383235U, the patent document of the pressure-proof test fixture named insulating pull rod, discloses an insulating pull rod test fixture, which can realize batch detection of insulating pull rods, but the insulating pull rods are transversely placed, supporting devices (trolley 5 in the text) are required to be arranged at two ends of the insulating pull rods, and a larger tank body is required to be arranged in order to accommodate the supporting devices, so that the test device has the advantages of large volume, large occupied space, high manufacturing cost and greatly increased filled SF6 gas. Moreover, the insulating pull rod is transversely placed, the insulating pull rod is integrally pressed, torque damage is easily caused, and the use of the insulating pull rod is affected.
Disclosure of Invention
Aiming at the problems, the utility model provides a novel insulating pull rod high-voltage test device, which is used for vertically placing an insulating pull rod, and the insulating pull rod is in a hanging state, so that a supporting device is not required to be arranged at two ends, the volume and the manufacturing cost of the device are greatly reduced, and the insulating pull rod can be prevented from being damaged.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the insulation pull rod high-voltage test device for the GIS comprises a high-voltage test sleeve, an insulation pull rod test unit and a connecting unit for connecting the high-voltage test sleeve and the insulation pull rod test unit, wherein a vertical conductor is arranged in the high-voltage test sleeve and is connected with a voltage transformation device; the insulation pull rod test unit comprises a shell, an upper shielding cover, a lower shielding cover and at least two vertically arranged insulation pull rods, wherein the upper shielding cover and the lower shielding cover are correspondingly provided with at least one cross rod, two ends of each insulation pull rod are respectively sleeved on the cross rods of the upper shielding cover and the lower shielding cover, and the end parts of the insulation pull rods on the same cross rod are separated through shaft sleeves; the bottom of the connecting unit is provided with a supporting rack, a transverse conductor is arranged in the supporting rack, one end of the transverse conductor is electrically connected with the vertical conductor, and the other end of the transverse conductor is electrically connected with the upper shielding cover; the lower shielding cover is connected with the shell through a grounding wire.
According to the insulating pull rod test unit, the upper shielding cover is electrically connected with the high-voltage test sleeve through the connecting unit, and the insulating pull rod is fixed by arranging the cross rods on the upper shielding cover and the lower shielding cover, so that vertical installation of the insulating pull rod is realized, the insulating pull rod is hung on the upper shielding cover, a plurality of supporting seats are not needed to be arranged for the insulating pull rod, the size of the shell can be greatly reduced, and the air charge amount is reduced. The structure of the utility model can also be provided with a plurality of insulation pull rods at the same time, thereby realizing batch detection.
Preferably, the connecting unit comprises a first connecting unit and a second connecting unit which are coaxially connected, the top opening of the first connecting unit is communicated with the high-voltage test sleeve, the bottom opening of the second connecting unit is communicated with the insulating pull rod test unit, the joint of the two connecting units is provided with a basin-type insulator, and the transverse conductor is divided into two sections connected by the basin-type insulator. The connecting unit is divided into two, and the whole shell can be divided into two air chambers by the separation of the basin-type insulators, SF6 gas is respectively filled, and the air filling is more convenient.
When the shielding cover is specifically used, the number and arrangement modes of the cross bars can be reasonably set according to the size of the shielding cover, and one-time detection of a plurality of insulating pull rods is realized. Preferably, the upper shielding cover and the lower shielding cover are respectively provided with 3 cross bars side by side, wherein the middle cross bar penetrates through the center of the cross section of the upper shielding cover, two cross bars are symmetrically arranged on two sides, the middle cross bar is used for fixing three insulation pull bars, and the cross bars on two sides are respectively used for fixing two insulation pull bars.
Further, the cross rod is provided with a fastening nut at the outermost side of the insulating pull rod for preventing the insulating pull rod from moving.
Further, the transformation device comprises a transformer, a boosting reactor and a power frequency voltage divider which are electrically connected in sequence and is used for providing high-frequency voltage for the high-voltage sleeve.
When the high-voltage test is carried out on the insulating pull rod, the insulating pull rod can be vertically installed, the insulating pull rod is prevented from being damaged, the whole size of the test device is greatly reduced, the installation and the detection are more convenient, and the cost is greatly reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
fig. 2 is an enlarged view of a portion a in the drawing;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of the use of the present utility model;
in the figure, 1, a high-voltage test sleeve, 2, a vertical conductor, 3, a first connecting unit, 4, a basin-type insulator, 5, a transverse conductor, 6, a second connecting unit, 7, a transition conductor, 8, an upper shielding cover, 9, an insulating pull rod, 10, a grounding wire, 11, a shell, 12, a base, 13, a support rack, 14, a cross rod, 15, a lower shielding cover, 16, a fastening nut, 17, a shaft sleeve, 18, a transformer, 19, a boosting reactor, 20, a power frequency voltage divider, 21 and an insulating pull rod test unit.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
The insulating pull rod high-voltage test device for the GIS comprises a high-voltage test sleeve 1, a first connecting unit 3, a second connecting unit 6 and an insulating pull rod test unit 21 as shown in fig. 1. The high-voltage test sleeve 1 is internally provided with a vertical conductor 2 which is used for being connected with a voltage transformation device. The first connecting unit 3 and the second connecting unit 6 are both cylindrical with the same caliber, are opened at one side, and are provided with connectors. One end of the first connecting unit 3 is connected with one end of the second connecting unit 6, the middle is separated by the basin-type insulator 4, and the outer ends of the first connecting unit and the second connecting unit are sealed by a detachable cover body. The first connecting unit 3 and the second connecting unit 6 are respectively internally provided with a section of conductor, and the two sections of conductors are electrically connected through a basin-type insulator to form a transverse conductor 5. The connector on the first connecting unit 3 is in sealing connection with the high-voltage test sleeve 1, and the transverse conductor in the connector is electrically connected with the vertical conductor in the high-voltage test sleeve through the contact. The insulated pull rod test unit 21 includes a housing 11, and an upper shield 8 and a lower shield 15 positioned within the housing. The top of the shell 11 is provided with an opening and is connected with a connector on the side face of the second connecting unit, and a transverse conductor in the second connecting unit is connected with the upper shielding cover 8 through the transition conductor 7. The bottom of the first connecting unit 3 is provided with a support rack 13, and the support rack 13 is fixed on the base 12. The first connecting unit and the second connecting unit have larger hardness and can stably support the high-voltage test sleeve.
As shown in fig. 2 and 3, the cross bars 14 are correspondingly erected on the upper shielding cover 8 and the lower shielding cover 15, and the end parts of the insulating pull bars are sleeved on the cross bars by using holes of the end parts of the insulating pull bars, so that the insulating pull bars are fixed. A plurality of insulating pull rods can be installed on one cross rod, the insulating pull rods are separated through shaft sleeves 17, and the outer sides of the insulating pull rods are fixed through fastening nuts 16 to prevent the insulating pull rods from shifting. The cross bar 14 is bolted to the shield at both ends. The upper shielding cover 8 and the lower shielding cover 15 are both annular, three cross bars 14 can be selectively arranged in combination with the annular shape, one cross bar passes through the center of a circle, the other two cross bars are symmetrically distributed on two sides, the middle cross bar 14 can be provided with three insulating pull rods 9, the cross bars 14 on two sides are respectively provided with two insulating pull rods 9, 7 insulating pull rods can be arranged at a time, and meanwhile, a voltage withstanding test and a partial discharge test can be carried out. The upper end of the insulating pull rod 9 is sleeved on the cross rod of the upper shielding cover 8, the lower end of the insulating pull rod is sleeved on the cross rod of the lower shielding cover 15, the upper shielding cover, the insulating pull rod and the lower shielding cover are hung on the transverse conductor 5, and the transverse conductor needs to have stronger bearing force and can bear the weight of the upper shielding cover, the insulating pull rod and the lower shielding cover. The lower shield 15 is connected to the housing 11 through the ground wire 10. Therefore, a supporting structure is not required to be arranged at the lower end, and the volume of the insulating pull rod test unit is greatly saved.
FIG. 4 is a schematic view showing the use state of the present utility model. The transformer device comprises a transformer 18, a boosting reactor 19 and a power frequency voltage divider 20, wherein the transformer 18, the boosting reactor 19 and the power frequency voltage divider 20 are electrically connected in sequence, and the power frequency voltage divider 20 is connected with the high-voltage test sleeve 1 through a test tool rod to improve test voltage for the high-voltage test device.
When the test device is used, after the insulating pull rod is installed in place, SF6 gas is respectively filled into the upper and lower part shells of the test device, and then 762kV voltage is applied to perform a partial discharge test. In the test process, the presence or absence of discharge sound was observed. And then, applying 1100kV voltage to carry out a power frequency withstand voltage test, removing the insulating pull rod after the power frequency withstand voltage test is finished, observing that no damage exists on the insulating pull rod, and judging whether the insulating pull rod is qualified or not.
The above-mentioned solution is only a preferred embodiment, and is not intended to limit the scope of the present utility model, and modifications made by those skilled in the art in light of the present inventive concept are within the scope of the present utility model.
Claims (5)
1. The utility model provides an insulating pull rod high voltage test device for GIS, includes high voltage test sleeve pipe (1), insulating pull rod test unit (21) and is used for connecting the connecting unit of high voltage test sleeve pipe and insulating pull rod test unit, be equipped with vertical conductor (2) in the high voltage test sleeve pipe (1), vertical conductor (2) are connected with transformer; the method is characterized in that: the insulation pull rod test unit (21) comprises a shell (11), an upper shielding cover (8), a lower shielding cover (15) and at least two vertically arranged insulation pull rods (9), wherein at least one cross rod (14) is correspondingly arranged on the upper shielding cover and the lower shielding cover, two ends of each insulation pull rod (9) are respectively sleeved on the cross rods (14) of the upper shielding cover and the lower shielding cover, and the end parts of the insulation pull rods on the same cross rod are separated through a shaft sleeve (17); the bottom of the connecting unit is provided with a supporting rack (13), a transverse conductor (5) is arranged in the supporting rack, one end of the transverse conductor (5) is electrically connected with the vertical conductor (2), and the other end of the transverse conductor is electrically connected with the upper shielding cover (8); the lower shield (15) is connected to the housing (11) via a ground wire (10).
2. The insulation pull rod high-voltage test device for GIS according to claim 1, wherein: the connecting unit comprises a first connecting unit (3) and a second connecting unit (6) which are coaxially connected, the top opening of the first connecting unit (3) is communicated with the high-voltage test sleeve (1), the bottom opening of the second connecting unit (6) is communicated with the insulating pull rod test unit (21), the junction of the two connecting units is provided with a basin-type insulator (4), and the transverse conductor (5) is divided into two sections connected by the basin-type insulator.
3. The insulation pull rod high-voltage test device for GIS according to claim 1, wherein: the upper shielding cover (8) and the lower shielding cover (15) are respectively provided with 3 cross bars (14) side by side, wherein the middle cross bar penetrates through the center of the cross section of the upper shielding cover, two cross bars are symmetrically arranged on two sides, the middle cross bar is used for fixing three insulation pull bars (9), and the cross bars on two sides are respectively used for fixing the two insulation pull bars (9).
4. The insulation pull rod high voltage test device for GIS according to claim 1 or 3, wherein: the cross rod (14) is provided with a fastening nut (16) at the outermost side of the insulating pull rod, and the fastening nut is used for preventing the insulating pull rod from moving.
5. A high-voltage testing apparatus for an insulating tie rod for GIS according to any one of claims 1 to 3, wherein: the transformation device comprises a transformer (18), a boosting reactor (19) and a power frequency voltage divider (20) which are electrically connected in sequence and is used for providing high-frequency voltage for the high-voltage sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928022.9U CN219799657U (en) | 2023-04-23 | 2023-04-23 | GIS is with insulating pull rod high-voltage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928022.9U CN219799657U (en) | 2023-04-23 | 2023-04-23 | GIS is with insulating pull rod high-voltage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219799657U true CN219799657U (en) | 2023-10-03 |
Family
ID=88157779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320928022.9U Active CN219799657U (en) | 2023-04-23 | 2023-04-23 | GIS is with insulating pull rod high-voltage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219799657U (en) |
-
2023
- 2023-04-23 CN CN202320928022.9U patent/CN219799657U/en active Active
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