CN218004496U - Sliding insulator for GIL - Google Patents

Abstract

The utility model provides a supporting subassembly of sliding insulator for GIL, GIL includes the sleeve, and the pouring of sleeve outside has the insulating part, and the insulator is equipped with 3 column legs, and the tip of each column leg all is equipped with the rabbet, is equipped with the metal insert in the rabbet, is equipped with the fixing base on the metal insert, is equipped with the ground connection subassembly on the fixing base; the end face of the fixed seat is also provided with at least one rolling assembly, and the rolling assemblies on the two column legs at the bottom are connected with the inner wall of the shell; the grounding assembly comprises a plurality of telescopic assemblies and a plurality of grounding electrodes, the grounding electrodes are connected with the fixing seat through the telescopic assemblies, the grounding electrodes are guaranteed to be always in close contact with the inner wall of the shell through the telescopic assemblies, and relative sliding can occur. All be equipped with the ground connection subassembly on this sliding insulator for GIL's three column leg, guaranteed the reliability of ground connection, and be equipped with supporting component between ground connection subassembly and the casing inner wall for the ground connection subassembly is difficult to damage, reduces the production of electric conductivity foreign matter simultaneously.

Description

Sliding insulator for GIL

Technical Field

The utility model belongs to the technical field of transmission equipment, concretely relates to improvement to sliding insulator ground reliability among the current GIL unit.

Background

The gas insulated metal enclosed bus (GIL) is used as important power transmission and transformation equipment in an energy channel, and has the characteristics of small volume, sealing, low heat loss, no external interference, stable performance and the like. With the improvement of the reliability requirement of power grid construction, the GIL is generally required to operate for a long time, and has high safety, low later maintenance cost and even no maintenance, so the requirement on the reliability of the GIL is extremely strict.

In a standard GIL unit, 1 fixed three post insulator and 2 to 3 sliding three post insulators are typically designed. The fixed insulator is pressed on the conductor and connected with the conductor into a whole, and then the fixed plate is welded with the inner wall of the shell through the fixed plate fixed on the leg part of the fixed three-post column, so that the fixed connection of the fixed insulator with the conductor and the shell is realized; and after the grounding electrode is arranged at the end part of the shell, the sliding three-post insulator is pushed along the axial direction of the shell and slides to a preset position.

The existing sliding three-post insulator is provided with a grounding component on a post leg at the top, and rollers are arranged on the other two post legs at the lower part, so that the following technical problems exist in the actual use of the structure: (1) Only one grounding assembly is arranged, once the grounding assembly is damaged and fails, the grounding of the whole insulator fails, and the reliability of grounding cannot be guaranteed; (2) The insulator can follow whole unit production when installation GIL and rotate, because do not have the supporting component between ground connection subassembly and the shell inner wall, the ground connection subassembly can bear great pressure, takes place the damage easily, and the ground connection subassembly is also bigger with shells inner wall's frictional quantity this moment, produces more electric conductivity foreign matters, and electric conductivity foreign matters can reduce the ground connection reliability of insulator, brings very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

To above technical problem, the utility model provides a sliding insulator for GIL all is equipped with the ground connection subassembly on this sliding insulator for GIL's the three column leg, has guaranteed the reliability of ground connection, and is equipped with the supporting component between ground connection subassembly and casing inner wall for the ground connection subassembly is difficult to damage, reduces the production of conductive foreign matter simultaneously.

The technical scheme of the utility model is that: the sliding insulator for the GIL comprises a sleeve, wherein 3 column legs are arranged on the sleeve, an embedding opening is formed in the end part of each column leg, a metal insert is arranged in each embedding opening, and a fixed seat is arranged on each metal insert;

the fixed seat is provided with at least one rolling assembly, and the rolling assemblies on the two column legs at the bottom are connected with the inner wall of the shell;

still be equipped with the ground connection subassembly on the fixing base, the ground connection subassembly includes a plurality of flexible subassemblies and a plurality of telluric electricity field, telluric electricity field links to each other with the fixing base through flexible subassembly, guarantees telluric electricity field through flexible subassembly and closely laminates with the inner wall of casing all the time.

Preferably, the rolling component comprises a shaft and a roller, a first mounting groove is formed in the fixing seat, a plurality of shaft holes are formed in the two sides of the first mounting groove, the shaft is transversely arranged in the first mounting groove through the shaft holes, and the roller is arranged on the shaft.

Preferably, the telescopic component is a spring, a plurality of second mounting grooves are formed in the fixing base, the spring is arranged in the second mounting groove, the grounding electrode is also arranged in the second mounting groove, a blocking ring is arranged on the grounding electrode, the grounding electrode on the lower portion of the blocking ring is sleeved in the spring, a blocking piece is arranged on the fixing base and used for limiting the upper limit of the grounding electrode.

Preferably, the blocking piece is a fixing plate, a through hole is formed in the fixing plate, the diameter of the through hole is smaller than that of the blocking ring, and the grounding electrode on the upper portion of the blocking ring penetrates through the through hole.

Preferably, the fixing seat is fixed on the metal insert through a screw.

Preferably, a particle catcher is further arranged on the metal insert.

The utility model has the advantages that: grounding assemblies are arranged on three column legs of the sliding insulator for GIL, so that the grounding reliability is ensured; the rolling assembly is used as a supporting component between the grounding assembly and the inner wall of the shell, so that when the insulator rotates, the grounding assembly cannot be damaged due to excessive pressure bearing, the generation of conductive foreign matters is reduced, and the grounding reliability is further improved.

Drawings

Figure 1 is a schematic structural view of the utility model,

figure 2 is a schematic structural view of the end of the insulator in the present invention,

figure 3 is an enlarged schematic view of the end of the insulator according to the present invention,

figure 4 is a schematic structural view of the fixing plate of the present invention,

figure 5 is a schematic structural view of a telescopic assembly in an embodiment,

in the figure, 1 is a shell, 2 is a particle catcher, 3 is a metal insert, 4 is a column leg, 5 is a fixing plate, 51 is a through hole, 52 is an avoiding hole, 6 is a fixing seat, 7 is a roller, 8 is a shaft, 9 is a grounding electrode, 91 is a stop ring, 10 is a spring, and 11 is a sleeve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. 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.

In fig. 1 to 5, the sliding insulator for GIL is shown, including sleeve 11, sleeve 11 cup joints outside the conductor during use, 3 post legs 4 are evenly distributed on sleeve 11, above be conventional part and conventional structure, specific setting mode is not repeated, the end of every post leg 4 is equipped with inlays the mouth, be equipped with metal insert 3 in the inlay mouth, metal insert 3 is spare part commonly used, specific structure and mounting mode are not repeated, be equipped with fixing base 6 on metal insert 3, in this embodiment, fixing base 6 is fixed on metal insert 3 through the screw, be equipped with a plurality of rolling assemblies on the terminal surface that fixing base 6 and casing 1 inner wall are adjacent, rolling assembly meets with casing 1 inner wall, rolling assembly and casing 1 inner wall on two post legs 4 in the bottom meet, realize the insulator removes in the casing through rolling assembly, still be equipped with a plurality of telluric electricity field electrodes 9 on the tip that fixing base 6 and casing 1 inner wall are adjacent, telluric electricity field electrodes 9 links to each other through flexible subassembly and fixing base 6, guarantee that telluric electricity field electrodes 9 all the time closely contacts with casing 1's inner wall through flexible subassembly, and when conductor and casing 1 take place relative slip, telluric electricity also can take place the contact with casing 1, telluric electricity.

Referring to fig. 2 and 3, in this embodiment, the rolling assembly includes a shaft 8 and a pulley 7, a first mounting groove is provided on the fixing base 6, a plurality of shaft holes are provided on two sides in the first mounting groove, the shaft 8 is horizontally disposed in the first mounting groove through the shaft holes and can freely rotate in the shaft holes, and the pulley 7 is provided on the shaft 8.

Referring to fig. 2 and 5, in this embodiment, the retractable assembly is a spring 10, a second mounting groove is formed in the fixing base 6, the spring 10 is disposed in the second mounting groove, the spring 10 is tightly attached to the inner wall of the second mounting groove, the grounding electrode 9 is also disposed in the second mounting groove, a stop ring 91 is disposed on the grounding electrode 9, the grounding electrode 9 at the lower portion of the stop ring 91 is sleeved in the spring 10, a stop member is disposed on the fixing base 6 and used for limiting the upper limit of the grounding electrode 9, in this embodiment, the stop member is a circular fixing plate 5, the fixing plate 5 is a screw end surface disposed on the fixing base 6, a through hole 51 is formed in the fixing plate 5, the diameter of the through hole 51 is smaller than that of the stop ring 91 and larger than that of the grounding electrode 9, and the upper end of the grounding electrode 9 passes through the through hole 51 to be connected to the inner wall of the housing 1. The fixed plate 5 is provided with a relief hole 52 for facilitating the installation of the pulley 7. When the shell 1 changes in shape due to thermal expansion and cold contraction or other conditions, the grounding electrode 9 in the shell can rise or fall along with the shell 1 under the action of the spring 10, and the shell can not generate conductive foreign matters due to severe friction when being pressed down, so that the grounding electrode 9 is always attached to the inner wall of the shell 1, and the grounding reliability of the grounding electrode 9 is ensured

Referring to fig. 1 and 2, the metal insert 3 is further provided with a particle trap 2, and the particle trap 2 is a component commonly used in the GIL and is used for trapping metal particles in the GIL to ensure stable operation of the GIL, and the specific structure and the installation manner are not described again.

Compared with the conventional sliding insulator which is only provided with the grounding component on one column leg, the sliding insulator structure provided by the implementation is provided with the grounding component on each column leg 4, and multiple positions are grounded, so that the reliability is ensured; the roller 7 is used as a support piece between the shell 1 and the grounding electrode 9, so that when the GIL bus rotates to drive the insulator to rotate, the spring 10 cannot be damaged due to excessive pressure bearing, the friction between the shell 1 and the grounding electrode 9 is reduced, the generation of conductive foreign matters is reduced, and the grounding reliability is further improved.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative labor, and these substitutions and modifications are all within the protection scope of the present invention.

Claims (6)

1. The sliding insulator for GIL comprises a sleeve, wherein 3 column legs are arranged on the sleeve, and the sliding insulator is characterized in that an embedding opening is formed in the end part of each column leg, a metal insert is arranged in each embedding opening, and a fixed seat is arranged on each metal insert;

   the fixed seat is provided with at least one rolling assembly, and the rolling assemblies on the two column legs at the bottom are connected with the inner wall of the shell;

   still be equipped with the ground connection subassembly on the fixing base, the ground connection subassembly includes a plurality of flexible subassemblies and a plurality of telluric electricity field, telluric electricity field links to each other with the fixing base through flexible subassembly, guarantees telluric electricity field through flexible subassembly and closely laminates with the inner wall of casing all the time.
2. 2. The sliding insulator for a GIL according to claim 1, wherein said rolling member comprises a shaft and a roller, said fixing base is provided with a first mounting groove, a plurality of shaft holes are formed in both sides of said first mounting groove, said shaft is horizontally disposed in said first mounting groove through said shaft holes, and said roller is disposed on said shaft.
3. 3. The sliding insulator for a GIL as claimed in claim 1, wherein said retractable member is a spring, said fixing base is provided with a plurality of second mounting grooves, said spring is disposed in said second mounting groove, said ground electrode is also disposed in said second mounting groove, said ground electrode is provided with a stop ring, said ground electrode at a lower portion of said stop ring is received in said spring, said fixing base is provided with a stop member, said stop member is used for limiting an upper limit of said ground electrode.
4. 4. The sliding insulator for a GIL as claimed in claim 3, wherein said blocking member is a fixing plate provided with a through hole having a diameter smaller than that of the blocking ring, and a ground electrode formed at an upper portion of the blocking ring is passed through the through hole.
5. 5. The sliding insulator for a GIL as set forth in claim 1, wherein said holder is fixed to the metal insert by means of a screw.
6. 6. The sliding insulator for a GIL of claim 1, wherein said metal insert is further provided with a particle trap.

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