Sliding device for GIL three-post insulator and insulator

Abstract

The utility model discloses a sliding device used for a GIL three-post insulator and an insulator, the insulator comprises a body and three posts radially extending from the outer surface of the body, the sliding device comprises a sliding assembly, a rolling assembly and an equipotential assembly, the rolling assembly is installed at the end parts of the two posts, and the equipotential assembly is installed at the end parts of the two posts. The roller is in rolling contact with the inner wall of a shell of the GI L; the sliding assembly is installed at the end of the other supporting column and used for being in sliding contact with the inner wall of a shell of the GI L. And the equipotential assembly is arranged at the end part of the other supporting column and is used for elastically contacting with the inner wall of the shell of the GI L so as to eliminate the suspension potential. The device has the advantages of simple structure, simplicity and convenience in operation, capability of eliminating suspended potential and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of power transmission equipment, and in particular to a sliding device for a GIL three-pillar insulator and an insulator. Background Art

[0002] With the continuous increase of power transmission voltage in the power grid and the increasing attention paid by the society to the electromagnetic environment, power transmission corridors have become a scarce resource that restricts the development of electricity, especially in densely populated large cities, where cable transmission and overhead line transmission are facing more and more difficulties. As an underground power transmission method, gas-insulated metal-enclosed transmission equipment (GIL) has the advantages of large transmission capacity, low unit loss, flexible layout, high operating reliability, long life, and no influence from external environmental factors, and has been widely used in the market. The equipment is relatively long and the conductor assembly is difficult. During the assembly process, the three-support insulator is very easy to rub against the shell, generating aluminum chips that cause product discharge and breakdown, resulting in operational failures. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in view of the technical problems existing in the prior art, the utility model provides a sliding device and an insulator for a GIL three-pillar insulator with a simple structure.

[0004] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0005] A sliding device for a GIL three-pillar insulator, wherein the insulator comprises a body and three pillars radially extending from the outer surface of the body, and the sliding device comprises a sliding assembly, a rolling assembly and an equipotential assembly, wherein the rolling assembly is mounted at the ends of two pillars for rolling contact with the inner wall of the GIL shell; the sliding assembly is mounted at the end of another pillar for sliding contact with the inner wall of the GIL shell; the equipotential assembly is mounted at the end of another pillar for elastic contact with the inner wall of the GIL shell to eliminate floating potential.

[0006] As a further improvement of the above technical solution:

[0007] The rolling assembly comprises a roller seat, an axle pin and a roller. The roller seat is fixedly installed on the end of the pillar, and the roller is rotatably installed in the roller seat through the axle pin.

[0008] The roller is made of nylon.

[0009] The sliding assembly comprises a sliding seat and a sliding block, wherein the sliding seat is fixedly installed at the end of the pillar, and the sliding block is fixedly installed in the sliding seat.

[0010] The slider is made of nylon.

[0011] The equipotential assembly includes a pin and a compression spring. The slider is provided with a mounting hole. The compression spring and the pin are both installed in the mounting hole. One end of the compression spring is fastened in the mounting hole, and the other end is connected to one end of the pin. The other end of the pin extends out of the mounting hole to elastically contact the inner wall of the GIL shell.

[0012] The pin is a conductive metal pin; the compression spring is a conductive metal compression spring.

[0013] A limiting step is arranged in the installation hole, and a limiting section matching with the limiting step is arranged on the pin.

[0014] The utility model also discloses a GIL three-pillar insulator, comprising a body and three pillars radially extending from the outer surface of the body, and also comprising the above-mentioned sliding device for the GIL three-pillar insulator.

[0015] As a further improvement of the above technical solution:

[0016] The three pillars are evenly distributed on the body.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The utility model discloses a sliding device for a three-pillar insulator of a GIL, which is in rolling contact with the inner wall of the shell of the GIL through a rolling assembly installed at the ends of two pillars; and in sliding contact with the inner wall of the shell of the GIL through a sliding assembly installed at the end of another pillar; the insulator and the inner wall of the shell are reliably and smoothly moved by the rolling assembly and the sliding assembly; the floating potential is eliminated by elastic contact with the inner wall of the shell of the GIL through the equipotential assembly, so as to ensure that there is no risk of partial discharge; the above overall structure is simple, easy to operate, easy to implement and has stable and reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural diagram of the sliding device of the utility model in an embodiment.

[0020] Figure 2 This is one of the partial enlarged views of the sliding device of the utility model in an embodiment.

[0021] Figure 3 This is the second partial enlarged view of the sliding device of the utility model in the embodiment.

[0022] Figure 4 This is one of the three-dimensional structural diagrams of the sliding device of the utility model in an embodiment.

[0023] Figure 5 This is the second three-dimensional structural diagram of the sliding device of the utility model in an embodiment.

[0024] Figure 6 This is a diagram showing an embodiment of the sliding device of the utility model in a specific application.

[0025] Legend: 1. Shell; 2. Insulator; 201. Main body; 202. Pillar; 3. Sliding assembly; 301. Sliding seat; 302. Sliding block; 4. Rolling assembly; 401. Roller seat; 402. Roller; 403. Axle pin; 5. Equipotential assembly; 501. Compression spring; 502. Pin; 503. Mounting hole; 504. Limit step; 505. Limit section. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 As shown, the sliding device for the GIL three-pillar insulator of the embodiment of the utility model is used on the GIL three-pillar insulator to realize the assembly and sliding support of the conductor; wherein the insulator 2 includes a body 201 and three pillars 202 radially extending from the outer surface of the body 201, and the sliding device specifically includes a sliding component 3, a rolling component 4 and an equipotential component 5, wherein the rolling component 4 is installed at the ends of two pillars 202 for rolling contact with the inner wall of the GIL shell 1; the sliding component 3 is installed at the end of another pillar 202 for sliding contact with the inner wall of the GIL shell 1; the equipotential component 5 is installed at the end of another pillar 202 for elastic contact with the inner wall of the GIL shell 1 to eliminate the floating potential.

[0028] The utility model discloses a sliding device for a three-pillar insulator of a GIL, wherein a rolling assembly 4 installed at the ends of two pillars 202 makes rolling contact with the inner wall of a shell 1 of the GIL; a sliding assembly 3 installed at the end of another pillar 202 makes sliding contact with the inner wall of the shell 1 of the GIL; through the rolling assembly 4 and the sliding assembly 3, the insulator 2 and the inner wall of the shell 1 can move reliably and smoothly; through the equipotential assembly 5, the inner wall of the shell 1 of the GIL is elastically contacted to eliminate the floating potential, thereby ensuring that there is no risk of partial discharge; the above-mentioned overall structure is simple, easy to operate, easy to implement, and has stable and reliable performance.

[0029] like Figure 3 As shown, the rolling assembly 4 includes a roller seat 401, an axle pin 403 and a roller 402. The roller seat 401 is fixedly mounted on the end of the support 202, and the roller 402 is rotatably mounted in the roller seat 401 through the axle pin 403. In specific applications, the roller 402 contacts the inner wall of the housing 1, and when the insulator 2 moves in the housing 1, the corresponding roller 402 rolls synchronously. Due to the rolling method, there is a small rolling friction resistance, which ensures the reliable movement of the insulator 2 in the housing 1.

[0030] Furthermore, the roller 402 is made of a wear-resistant nylon material (mainly composed of polyamide, which is an existing conventional material) with a high sliding coefficient, which further ensures the reliability of rolling.

[0031] like Figure 2 As shown, the sliding assembly 3 includes a sliding seat 301 and a slider 302. The sliding seat 301 is fixedly mounted at the end of the support 202, and the slider 302 is fixedly mounted in the sliding seat 301. In specific applications, the slider 302 contacts the inner wall of the housing 1. When the insulator 2 moves in the housing 1, the corresponding slider 302 slides synchronously. The slider 302 is made of nylon material (mainly polyamide, which is a conventional material) with high wear resistance and sliding coefficient, and has a small sliding friction resistance, thereby ensuring the reliable movement of the insulator 2 in the housing 1.

[0032] like Figure 2 As shown, the equipotential assembly 5 includes a pin 502 and a compression spring 501. A mounting hole 503 is provided on the slider 302. The compression spring 501 and the pin 502 are both installed in the mounting hole 503. One end of the compression spring 501 is fastened in the mounting hole 503, and the other end is connected to one end of the pin 502. The other end of the pin 502 extends out of the mounting hole 503 to elastically contact with the inner wall of the housing 1 of the GIL. Of course, the pin 502 is a pin made of conductive metal (such as copper); the compression spring 501 is a compression spring made of conductive metal (such as copper). In addition, a limiting step 504 is provided on the outer side of the mounting hole 503, and a limiting section 505 is provided on the corresponding pin 502 to cooperate with the limiting step 504. Through the cooperation between the limiting step 504 and the limiting section 505, it is ensured that the corresponding pin 502 will not fall out of the mounting hole 503. In specific applications, the ball 502 is in reliable contact with the inner wall of the housing 1 through the spring force of the compression spring 501, thereby eliminating the floating potential generated during the operation of the product, so that the product can operate safely, reliably and stably.

[0033] Working principle: Figure 6 As shown, the conductor is used as a guide track to push the rollers 402 on both sides and the upper slider 302 to slide on the inner wall of the housing 1, and the compression spring 501 pushes the pin 502 to contact the inside of the housing 1 to achieve the function of eliminating the floating potential. The overall structure is simple, the performance is stable and reliable, and it meets the use requirements very well.

[0034] like Figure 4-5 As shown, the embodiment of the utility model further provides a GIL three-post insulator, comprising a body 201, three posts 202 radially extending from the outer surface of the body 201, and the sliding device for the GIL three-post insulator as described above; wherein the three posts 202 are evenly distributed on the body 201. The GIL three-post insulator of the utility model, including the sliding device as described above, also has the advantages described above for the sliding device.

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A sliding device for a GIL three-pillar insulator, wherein the insulator (2) comprises a body (201) and three pillars (202) radially extending from the outer surface of the body (201), characterized in that: The sliding device comprises a sliding component (3), a rolling component (4) and an equipotential component (5); the rolling component (4) is mounted on the ends of two pillars (202) and is used for rolling contact with the inner wall of the GIL shell (1); the sliding component (3) is mounted on the end of another pillar (202) and is used for sliding contact with the inner wall of the GIL shell (1); the equipotential component (5) is mounted on the end of another pillar (202) and is used for elastic contact with the inner wall of the GIL shell (1) to eliminate the floating potential.

2. The sliding device for GIL three-post insulator according to claim 1, characterized in that: The rolling assembly (4) comprises a roller seat (401), an axle pin (403) and a roller (402); the roller seat (401) is fixedly mounted on the end of the support (202); and the roller (402) is rotatably mounted in the roller seat (401) via the axle pin (403).

3. The sliding device for GIL three-post insulator according to claim 2, characterized in that: The roller (402) is a roller made of nylon.

4. The sliding device for a GIL three-post insulator according to claim 1, 2 or 3, characterized in that: The sliding assembly (3) comprises a sliding seat (301) and a sliding block (302); the sliding seat (301) is fixedly mounted on the end of the support (202), and the sliding block (302) is fixedly mounted in the sliding seat (301).

5. The sliding device for GIL three-post insulator according to claim 4, characterized in that: The slider (302) is a slider made of nylon.

6. The sliding device for GIL three-post insulator according to claim 4, characterized in that: The equipotential assembly (5) comprises a pin (502) and a compression spring (501); a mounting hole (503) is provided on the slider (302); the compression spring (501) and the pin (502) are both mounted in the mounting hole (503); one end of the compression spring (501) is fastened in the mounting hole (503); the other end is connected to one end of the pin (502); the other end of the pin (502) extends out of the mounting hole (503) to elastically contact the inner wall of the GIL housing (1).

7. The sliding device for GIL three-post insulator according to claim 6, characterized in that: The pin (502) is a conductive metal pin; and the compression spring (501) is a conductive metal compression spring.

8. The sliding device for GIL three-post insulator according to claim 6, characterized in that: A limiting step (504) is provided in the installation hole (503), and a limiting section (505) matching with the limiting step (504) is provided on the pin (502).

9. A GIL three-pillar insulator, comprising a body (201) and three pillars (202) radially extending from the outer surface of the body (201), characterized in that: It also includes a sliding device for a GIL triple-pillar insulator as described in any one of claims 1-8.

10. The GIL three-pillar insulator according to claim 9, characterized in that: The three pillars (202) are evenly distributed on the body (201).

Images