CN112928502B - Grounding structure for rigid power transmission line - Google Patents
Grounding structure for rigid power transmission line Download PDFInfo
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- CN112928502B CN112928502B CN202110132826.3A CN202110132826A CN112928502B CN 112928502 B CN112928502 B CN 112928502B CN 202110132826 A CN202110132826 A CN 202110132826A CN 112928502 B CN112928502 B CN 112928502B
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- contact
- grounding
- spring
- mounting spring
- sliding block
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention relates to a grounding structure for a rigid power transmission line, which comprises a GIL cylinder, a nylon sliding block, a fixing plate, a three-support insulating part, a nylon sliding block fixing spring, a first grounding contact, a second grounding contact, a first contact mounting spring, a second contact mounting spring and a particle trap, wherein the particle trap is fixed on a grounding insert of the three-support insulating part through the fixing plate by using a screw; the nylon sliding block fixing spring and the nylon sliding block are assembled into a whole; the first grounding contact and the first contact mounting spring are assembled together, the second grounding contact and the second contact mounting spring are assembled together, the first grounding contact and the first contact mounting spring as well as the second grounding contact and the second contact mounting spring are inserted into the nylon sliding block, and the bottom ends of the first contact mounting spring and the second contact mounting spring fall into the bottom mounting hole of the fixing plate by rotating the nylon sliding block; the first and second ground contacts are now arranged back and forth along the direction of relative movement of the GIL cylinder.
Description
Technical Field
The invention relates to the technical field of Gas-insulated Metal Enclosed Transmission lines (GILs), in particular to a grounding structure for a rigid Transmission Line.
Background
In the prior art, two groups of grounding contacts in a grounding structure for a rigid power transmission line are arranged in parallel and are placed in a nylon sliding block, and a spring is arranged below a copper contact.
Since the two grounded ground contacts in the conventional grounding structure are arranged in parallel along the direction of the relative movement of the GIL cylinder (the extending direction of the ground contacts is parallel to the direction of the relative movement of the GIL cylinder), in actual operation, when the three-support insulating part and the GIL cylinder body have relative displacement due to thermal expansion and cold contraction of the GIL cylinder body caused by temperature change of the environment, one of the two parallel grounding contacts may be blocked due to roughness of the inner wall of the GIL cylinder body or existence of pits and the like, the movement of the other side of the ground contact causes the nylon slider holding the ground contact to be subjected to a rotational moment, when this rotational moment is gradually increased with further unsynchronized movement of the two ground contacts, the nylon slider will rotate and the spring mounting these two ground contacts will run the risk of coming out of the mounting hole in the three-support insulator mounting plate. Once the spring for installing the grounding contact is separated from the mounting hole of the fixing plate, the grounding state is invalid, and the partial discharge is over-large or the discharge fault is generated in the long-time operation process of the product.
Disclosure of Invention
The invention aims to provide a novel grounding structure of a three-support insulating part and a particle trap, and solves the technical problems of how to avoid the rotation moment generated by two grounding contacts on a nylon sliding block when the two grounding contacts do not synchronously move and furthest avoiding the risk that mounting springs of the two grounding contacts are separated from mounting holes in a three-support insulating part fixing plate.
The invention aims to solve the defects of the prior art and provides a grounding structure for a rigid power transmission line, which comprises a GIL cylinder, a nylon sliding block, a fixing plate, a three-support insulating part, a nylon sliding block fixing spring, a first grounding contact, a second grounding contact, a first contact mounting spring, a second contact mounting spring and a particle trap, wherein the particle trap is fixed on a grounding insert of the three-support insulating part through the fixing plate by using a screw; the nylon sliding block fixing spring and the nylon sliding block are assembled into a whole, and the nylon sliding block is rotatably arranged in the fixing plate; the first grounding contact and the first contact mounting spring are assembled together, the second grounding contact and the second contact mounting spring are assembled together, the first grounding contact and the first contact mounting spring as well as the second grounding contact and the second contact mounting spring are inserted into the nylon sliding block, and the bottom ends of the first contact mounting spring and the second contact mounting spring fall into the bottom mounting hole of the fixed plate by rotating the nylon sliding block; the first and second ground contacts are arranged back and forth along the direction of relative movement of the GIL cylinder.
The nylon sliding block fixing spring, the first contact mounting spring and the second contact mounting spring are compressed downwards by pressing the nylon sliding block, the first grounding contact and the second grounding contact by hands, and the three supporting insulating parts are sent into the GIL cylinder body, so that the installation of the grounding structure for the rigid power transmission line is completed.
Preferably, the first ground contact and the second ground contact are both copper contacts.
After the installation is completed, the bottom ends of the first contact mounting spring and the second contact mounting spring are connected with the three supporting insulators and the particle trap.
In practical use, the first contact mounting spring and the second contact mounting spring are compressed to enable the first grounding contact and the second grounding contact to be placed in the GIL cylinder, the tops of the first grounding contact and the second grounding contact to be in contact connection with the GIL cylinder, and the GIL cylinder is in a grounding state all the time, so that the three supporting insulators and the particle traps connected with the GIL cylinder are also in a grounding state.
The nylon sliding block is provided with a groove, and the nylon sliding block fixing spring is arranged in the groove in the nylon sliding block, so that the nylon sliding block fixing spring and the nylon sliding block are assembled into a whole.
The nylon sliding block is also provided with a first contact mounting hole and a second contact mounting hole, and the first grounding contact and the first contact mounting spring are mounted in the first contact mounting hole; the second ground contact and the second contact mounting spring are mounted in the second contact mounting hole.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
in the grounding structure for the rigid power transmission line, the two grounding contacts are arranged in the front-back direction along the relative movement direction of the GIL cylinder, when the three-support insulating part and the GIL cylinder have relative displacement due to thermal expansion and cold contraction of the GIL cylinder caused by the temperature change of the environment, the movement tracks of the two grounding contacts are consistent and are positioned at the central position of the nylon slider, so that even if the movement of the grounding contacts is blocked due to the roughness of the inner wall of the GIL cylinder or pits and the like, the nylon slider is only subjected to axial thrust without generating rotating moment, and the nylon slider is not rotated due to the rotating moment, thereby avoiding the risk that the mounting spring of the grounding contact is separated from the mounting hole at the bottom of the fixed plate.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is an assembly view of the grounding structure for a rigid power transmission line according to the present invention.
Fig. 2 is a top view of the grounding structure shown in fig. 1.
Detailed Description
The present invention is described in more detail below to facilitate an understanding of the present invention.
As shown in fig. 1 to 2, the grounding structure for a rigid power transmission line according to the present invention includes a GIL cylinder 1, a nylon slider 2, a fixing plate 3, a three-support insulator 4, a nylon slider fixing spring 5, a first grounding contact 6, a second grounding contact 66, a first contact mounting spring 7, a second contact mounting spring 77, and a particle trap 8, wherein the particle trap 8 is fixed to a grounding insert of the three-support insulator 4 by a screw through the fixing plate 3; the nylon sliding block fixing spring 5 and the nylon sliding block 2 are assembled into a whole, and the nylon sliding block 2 is rotatably arranged in the fixing plate 3; the first grounding contact 6 and the first contact mounting spring 7 are assembled together, the second grounding contact 66 and the second contact mounting spring 77 are assembled together, the first grounding contact 6 and the first contact mounting spring 7 as well as the second grounding contact 66 and the second contact mounting spring 77 are inserted into the nylon slider 2, and the bottom ends of the first contact mounting spring 7 and the second contact mounting spring 77 fall into the bottom mounting hole of the fixed plate 3 by rotating the nylon slider 2; the first and second ground contacts 6, 66 are now arranged back and forth along the direction of relative movement of the GIL cylinder 1 (as shown in fig. 1, the direction of extension of the first and second ground contacts 6, 66 is perpendicular to the direction of relative movement of the GIL cylinder 1).
The nylon slider 2, the first grounding contact 6 and the second grounding contact 66 are pressed by hands, so that the nylon slider fixing spring 5, the first contact mounting spring 7 and the second contact mounting spring 77 are compressed downwards, and the three supporting insulating parts are sent into the GIL cylinder body 1, so that the installation of the grounding structure for the rigid power transmission line is completed.
Preferably, the first ground contact 6 and the second ground contact 66 are both copper contacts.
After the mounting is completed, the bottom ends of the first contact mounting spring 7 and the second contact mounting spring 77 are connected to the three-support insulator and the particle trap.
In actual use, the first contact mounting spring 7 and the second contact mounting spring 77 are compressed to place the first ground contact 6 and the second ground contact 66 in the GIL cylinder, and the tops of the first ground contact 6 and the second ground contact 66 are in contact connection with the GIL cylinder, so that the three supporting insulators and the particle trap connected with the GIL cylinder can be in a ground state at any time because the GIL cylinder is in a ground state.
The nylon sliding block 2 is provided with a groove, and the nylon sliding block fixing spring 5 is arranged in the groove in the nylon sliding block 2, so that the nylon sliding block fixing spring 5 and the nylon sliding block 2 are assembled into a whole.
The nylon sliding block 2 is also provided with a first contact mounting hole and a second contact mounting hole, and the first grounding contact 6 and the first contact mounting spring 7 are mounted in the first contact mounting hole; the second ground contact 66 and the second contact mounting spring 77 are mounted in the second contact mounting hole.
The grounding structure for the rigid power transmission line is different from the prior art in that: two ground contacts are along GIL barrel relative motion direction tandem, temperature variation at the environment leads to GIL barrel expend with heat and contract with cold and make three support insulating part and GIL barrel have relative displacement when, two ground contact's movement track is unanimous and is in the central point of nylon slider, even if because the roughness of GIL barrel inner wall or there are pits etc. reason to lead to ground contact's motion to have the jamming like this, the nylon slider also only receives axial thrust, can not produce rotation moment, just so can not lead to the nylon slider rotatory because of having rotation moment, thereby avoid making ground contact's installation spring have the risk of breaking away from fixed plate bottom mounting hole.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (4)
1. A grounding structure for a rigid power transmission line is characterized by comprising a GIL cylinder, a nylon sliding block, a fixing plate, a three-support insulating part, a nylon sliding block fixing spring, a first grounding contact, a second grounding contact, a first contact mounting spring, a second contact mounting spring and a particle trap, wherein the particle trap is fixed on a grounding insert of the three-support insulating part through the fixing plate by using screws; the nylon sliding block fixing spring and the nylon sliding block are assembled into a whole, and the nylon sliding block is rotatably arranged in the fixing plate; the first grounding contact and the first contact mounting spring are assembled together, the second grounding contact and the second contact mounting spring are assembled together, the first grounding contact and the first contact mounting spring as well as the second grounding contact and the second contact mounting spring are inserted into the nylon sliding block, and the bottom ends of the first contact mounting spring and the second contact mounting spring fall into the bottom mounting hole of the fixed plate by rotating the nylon sliding block; at the moment, the first grounding contact and the second grounding contact are arranged in a front-back manner along the relative movement direction of the GIL cylinder; the relative movement direction of the GIL cylinder is vertical to the extension direction of the lengths of the first ground contact and the second ground contact;
the nylon sliding block fixing spring, the first contact mounting spring and the second contact mounting spring are compressed downwards by pressing the nylon sliding block, the first grounding contact and the second grounding contact by hands, and the three supporting insulating parts are sent into the GIL cylinder body, so that the installation of the grounding structure for the rigid power transmission line is completed;
the first grounding contact and the second grounding contact are both copper contacts;
after the installation is completed, the bottom ends of the first contact mounting spring and the second contact mounting spring are connected with the three supporting insulators and the particle trap.
2. The grounding structure for the rigid transmission line of claim 1, wherein in practical use, the first contact mounting spring and the second contact mounting spring are compressed to enable the first grounding contact and the second grounding contact to be placed in the GIL cylinder, and the tops of the first grounding contact and the second grounding contact to be in contact connection with the GIL cylinder, so that the three supporting insulators and the particle traps connected with the GIL cylinder are also in a grounding state due to the fact that the GIL cylinder is in a grounding state all the time.
3. The grounding structure for the rigid power transmission line according to claim 1, wherein a groove is formed in the nylon slider, and the nylon slider fixing spring is installed in the groove in the nylon slider, so that the nylon slider fixing spring and the nylon slider are assembled into a whole.
4. The grounding structure for the rigid power transmission line according to claim 1, wherein a first contact mounting hole and a second contact mounting hole are further formed in the nylon slider, and the first grounding contact and the first contact mounting spring are mounted in the first contact mounting hole; the second ground contact and the second contact mounting spring are mounted in the second contact mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132826.3A CN112928502B (en) | 2021-02-01 | 2021-02-01 | Grounding structure for rigid power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132826.3A CN112928502B (en) | 2021-02-01 | 2021-02-01 | Grounding structure for rigid power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112928502A CN112928502A (en) | 2021-06-08 |
| CN112928502B true CN112928502B (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110132826.3A Active CN112928502B (en) | 2021-02-01 | 2021-02-01 | Grounding structure for rigid power transmission line |
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| CN (1) | CN112928502B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403670B (en) * | 2017-07-24 | 2019-05-14 | 许继集团有限公司 | A kind of post insulator sub-component and GIL system |
| CN109686513B (en) * | 2018-12-27 | 2020-07-10 | 河南平高电气股份有限公司 | GI L and post insulator subassembly thereof |
| CN111697359A (en) * | 2020-07-13 | 2020-09-22 | 江苏科悦电气工程技术有限公司 | Self-lubricating sliding support structure for GIL equipment |
| CN111883944A (en) * | 2020-08-25 | 2020-11-03 | 天津尚圣科技有限公司 | Flexible grounding device for GIL with foreign matter collection function |
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2021
- 2021-02-01 CN CN202110132826.3A patent/CN112928502B/en active Active
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| Publication number | Publication date |
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| CN112928502A (en) | 2021-06-08 |
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