CN211239237U - Sleeve outgoing bus structure - Google Patents

Abstract

The utility model discloses a bushing outlet bus structure, which is characterized by comprising a bushing shell, wherein the bushing shell is provided with an insulator mounting flange and 3 bushing mounting flanges; an insulator mounting flange on the casing is connected with a basin-type insulator, the basin-type insulator is respectively connected with one end of a three-phase conductor, the other end of the three-phase conductor is respectively fixedly connected with a contact seat, positioning grooves are respectively arranged at the other end of the three-phase conductor and the contact seat, and positioning pins are arranged in the positioning grooves; an inner shielding ring is arranged on the outer side of each sleeve pipe mounting flange, a sleeve pipe is fixed on each sleeve pipe mounting flange, a sleeve pipe outgoing conductor is arranged in each sleeve pipe, and the lower portion of each sleeve pipe outgoing conductor is arranged in a contact seat. The utility model discloses a small, light in weight, arrangement mode are nimble, simplify the installation, improve seal structure, improve equipment's operating stability and security, reduce the leakage risk, improve contact seat positioning accuracy, but wide application in the built on stilts occasion of being qualified for the next round of competitions of GIS equipment.

Description

Sleeve outgoing bus structure

Technical Field

The utility model relates to a sleeve pipe bus structure of being qualified for the next round of competitions especially relates to GIS (GAS intussusception switchGEAR promptly, is the built on stilts generating line of being qualified for the next round of competitions of english of the totally closed combined electrical apparatus of GAS insulation), belongs to high-pressure power transmission and distribution field.

Background

At present, the outlet connection bus of the 126/145kVGIS equipment casing mostly adopts a straight or inclined outlet mode, the casing connection bus has large volume and heavy weight, the hoisting and installation processes are complex, and the manufacturing cost is higher. The connecting bus shell adopts a welding or casting processing method, and more mounting hand holes are usually arranged on the shell for convenient mounting, so that more sealing surfaces exist in the bushing bus, the risk of air leakage is increased, and the long-term safe operation of equipment is not facilitated. In addition, the bus inner conductor is a special-shaped casting usually due to the requirement of an outlet structure, the conductor has high requirement on installation precision, and when the positioning is inaccurate, the deformation of a spring contact finger at a joint part or local stress concentration often occurs, so that the temperature rise in the area exceeds the standard, and potential hazards are formed on the safe operation of equipment.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to simplify the installation process of the bushing outlet bus structure, improve the sealing structure and improve the operation stability and safety of the equipment.

In order to solve the technical problem, the technical scheme of the utility model is to provide a sleeve outgoing bus structure, which is characterized in that the structure comprises a sleeve shell, wherein the sleeve shell is provided with an insulator mounting flange for mounting a basin-type insulator and 3 sleeve mounting flanges respectively used for mounting an A-phase conductor, a B-phase conductor and a C-phase conductor; an insulator mounting flange on the casing is connected with a basin-type insulator, the basin-type insulator is respectively connected with one end of the A-phase conductor, the B-phase conductor and one end of the C-phase conductor, the other ends of the A-phase conductor, the B-phase conductor and the C-phase conductor are respectively and fixedly connected with a contact seat, positioning grooves are respectively arranged on the A-phase conductor, the B-phase conductor, the other end of the C-phase conductor and the contact seat, and positioning pins for positioning the A-phase conductor, the B-phase conductor and the C-phase conductor with the contact seat are arranged in the positioning; an inner shielding ring is arranged on the outer side of each sleeve pipe mounting flange, a sleeve pipe is fixed on each sleeve pipe mounting flange, a sleeve pipe outgoing conductor is arranged in each sleeve pipe, and the lower portion of each sleeve pipe outgoing conductor is arranged in a contact seat.

Preferably, the axes of the 3 sleeve mounting flanges intersect at one point; the bushing mounting flanges for mounting the a-phase conductor and for mounting the C-phase conductor are symmetrically distributed relative to the bushing mounting flange for mounting the B-phase conductor.

Preferably, the axes of the 3 sleeve mounting flanges are respectively at an included angle of 20-45 degrees relative to the end face of the insulator mounting flange, and the projection angles of the sleeve mounting flanges for mounting the A-phase conductor and the C-phase conductor relative to the sleeve mounting flange for mounting the B-phase conductor are respectively 40-70 degrees.

Preferably, the casing shell is further provided with an adsorbent mounting flange for mounting an adsorbent; an adsorbent cover plate or an adsorbent cover is arranged on the adsorbent mounting flange.

Preferably, 4-5 flanges are arranged on the casing shell.

Preferably, the casing shell is of an integrated structure; the casing is an aluminum alloy casting; the length of the casing of the cannula does not exceed 500 mm.

Preferably, the connection positions of the basin-type insulator and the phase A conductor, the phase B conductor and the phase C conductor are distributed in an equilateral triangle or an isosceles triangle.

Preferably, a spring contact finger or a watchband contact finger is arranged in the contact seat; the lower part of the casing outgoing line conductor is connected with a spring contact finger or a watchband contact finger in the contact seat.

Preferably, each sleeve mounting flange is connected with the inner shielding ring through a transition flange; the upper plane of the transition flange is fixedly connected with the lower end of the sleeve.

Preferably, the flange surface on the bushing outlet conductor is aligned with the flange surface on the top of the bushing.

The utility model discloses a small, light in weight, arrangement mode are nimble, simplify the installation, improve seal structure, improve the operating stability and the security of improve equipment, reduce the leakage risk, improve contact seat positioning accuracy to avoid pointing stress concentration because of the inaccurate result in of location, reduce the equipment temperature rise risk that exceeds standard, to reducing intensity of labour, improve work efficiency and equipment operation security have positive meaning, but wide application in GIS equipment overhead line occasion.

Drawings

FIG. 1 is a schematic diagram of a bushing outlet bus structure;

FIG. 2 is a cross-sectional view of a bushing outlet bus bar configuration;

FIG. 3 is a schematic structural view of a cannula housing;

FIG. 4 is a schematic structural view of a basin insulator;

FIG. 5 is a longitudinal cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the connection of a contact block to a three-phase conductor;

fig. 7 is a using state diagram of a bushing outlet bus bar structure.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model relates to a sleeve pipe bus structure of being qualified for next round of competitions, as shown in fig. 1-6, it includes sleeve pipe shell 2, sleeve pipe shell 2 is the aluminum alloy foundry goods, contain insulator mounting flange 21, 3 sleeve pipe mounting flanges 22 that are used for installing A looks conductor 5, B looks conductor 6, C looks conductor 7 respectively and are used for installing adsorbent mounting flange 23 of adsorbent that are used for installing basin insulator 1; the axes of the 3 sleeve mounting flanges 22 intersect at one point; bushing mounting flanges 22 for mounting phase a conductor 5 and for mounting phase C conductor 7 are symmetrically distributed relative to bushing mounting flange 22 for mounting phase B conductor 6.

Three-phase conductors (namely, an A-phase conductor 5, a B-phase conductor 6 and a C-phase conductor 7) are arranged on the basin-type insulator 1, an insulator mounting flange 21 on the casing 2 is connected with the basin-type insulator 1, a positioning groove is formed in the tail end of each three-phase conductor, the three-phase conductors are positioned with the contact seat 8 through the matching positioning pin 9, the contact seat 8 can be fixed through 1-4 fastening bolts, and a spring contact finger or a watchband contact finger is arranged in the contact seat 8. The transition flange 10 is arranged at the sleeve mounting flange 22 of the sleeve shell 2, and the inner shielding ring 11 is arranged outside the transition flange 10, so that the purposes of homogenizing the field intensity distribution at the transition joint and reducing the partial discharge level are achieved. The sleeve 13 is arranged on the upper plane of the transition flange 10, the sleeve outgoing line conductor 12 is arranged inside the sleeve 13, the flange surface on the sleeve outgoing line conductor 12 is aligned with the flange surface on the top of the sleeve 13, and the lower part of the sleeve outgoing line conductor 12 is inserted into the contact seat 8 provided with a spring or a watchband contact finger to realize current conduction. The sleeve 13 is mounted on the sleeve housing 2 at an oblique upper angle. According to the actual requirement of the project, an adsorbent cover plate 3 can be arranged at an adsorbent mounting flange 23 of the casing shell 2 for plugging or a molecular sieve device (namely an adsorbent cover 4) is additionally arranged so as to realize the sealing in the gas chamber and the control of the gas micro-water content.

As shown in fig. 4 and 5, the joints of the basin-shaped insulator 1 with the phase a conductor 5, the phase B conductor 6 and the phase C conductor 7 are distributed in an equilateral triangle or an isosceles triangle.

The utility model discloses a casing shell 2 adopts cast mode of whole aluminum alloy and length no longer than 500mm, has characteristics small, light in weight, sets up 4-5 flange (adsorbent mounting flange 23 can select to remain or get rid of according to actual conditions) on casing shell 2, does not have unnecessary installation face, has reduced possible leakage risk, has made things convenient for the hoist and mount and the installation of equipment. The axes of the 3 sleeve mounting flanges 22 form included angles of 20-45 degrees relative to the end faces of the insulator mounting flanges 21, the projection angles of the sleeve mounting flanges 22 for mounting the A-phase conductor 5 and the C-phase conductor 7 relative to the sleeve mounting flanges 22 for mounting the B-phase conductor 6 are 40-70 degrees and are symmetrically distributed, the three-phase sleeves of the structure are inclined at a certain angle, the distance between the electrified ends of the sleeves and the ground and the wall can be increased to a certain extent, the arrangement mode is flexible, and safe operation of equipment is facilitated. The inner shielding ring 11 is installed on the transition flange 10 or directly installed on the flange of the opening of the casing shell 2 by adopting an integral spinning or welding mode, can homogenize the field intensity distribution at the transition joint, and has positive significance for reducing the partial discharge level of the whole interval. And the sleeve 13, the sleeve outgoing conductor 12 and the transition flange 10 are assembled on 3 sleeve mounting flanges 22 of the sleeve shell 2 after being assembled, so that the GIS SF6 end is connected to the air end of the overhead sleeve.

The contact seat 8 and A, B, C phase conductors adopt positioning pins for auxiliary positioning (as shown in fig. 6), which can simplify the installation and positioning process of the contact seat and improve the positioning precision of the contact seat, thereby avoiding the stress concentration of the contact finger caused by inaccurate positioning, reducing the risk of exceeding standard of the temperature rise of the equipment, and having positive significance for reducing the labor intensity, improving the working efficiency and the operation safety of the equipment.

The utility model discloses an installation as follows:

1) installing an A-phase conductor 5, a B-phase conductor 6 and a C-phase conductor 7 on the basin-type insulator 1, installing a positioning pin 9 and a contact seat 8 at the end part of the three-phase conductor after adjusting the angle, and then butting the installed units with the casing 2 to form a first installation unit;

2) mounting an inner shielding ring 11 on a transition flange 10 to form a second mounting unit;

3) a bushing outgoing conductor 12 is installed on a bushing 13 to form a third installation unit;

4) and the first unit, the second unit and the third unit are sequentially arranged together to complete the installation of the whole module, and the adsorbent cover plate 3 and the adsorbent cover 4 can be selectively installed according to working condition requirements.

As shown in FIG. 7, the utility model discloses during the use, directly will fix through basin formula insulator 1 can, it can be widely used in 126 supple with electricity 145kV GIS equipment overhead outlet occasion.

Claims (10)

1. A bushing outlet bus structure is characterized by comprising a bushing shell (2), wherein an insulator mounting flange (21) for mounting a basin-type insulator (1) and 3 bushing mounting flanges (22) for mounting an A-phase conductor (5), a B-phase conductor (6) and a C-phase conductor (7) respectively are arranged on the bushing shell (2); an insulator mounting flange (21) on the casing shell (2) is connected with a basin-type insulator (1), the basin-type insulator (1) is respectively connected with one ends of an A-phase conductor (5), a B-phase conductor (6) and a C-phase conductor (7), the other ends of the A-phase conductor (5), the B-phase conductor (6) and the C-phase conductor (7) are respectively fixedly connected with a contact seat (8), positioning grooves are respectively arranged on the other ends of the A-phase conductor (5), the B-phase conductor (6) and the C-phase conductor (7) and the contact seat (8), and positioning pins (9) for positioning the A-phase conductor (5), the B-phase conductor (6) and the C-phase conductor (7) and the contact seat (8) are arranged in the positioning grooves; the outer side of each sleeve pipe installation flange (22) is provided with an inner shielding ring (11), a sleeve pipe (13) is fixed on each sleeve pipe installation flange (22), a sleeve pipe outgoing line conductor (12) is arranged in each sleeve pipe (13), and the lower portion of each sleeve pipe outgoing line conductor (12) is arranged in the contact seat (8).

2. A bushing outlet bus bar structure according to claim 1, wherein the axes of 3 bushing mounting flanges (22) intersect at a point; and sleeve mounting flanges (22) for mounting the phase A conductor (5) and the phase C conductor (7) are symmetrically distributed relative to the sleeve mounting flange (22) for mounting the phase B conductor (6).

3. A bushing outlet bus bar structure according to claim 2, wherein the axes of the 3 bushing mounting flanges (22) are all at an angle of 20 ° to 45 ° relative to the end face of the insulator mounting flange (21), and the projection angles of the bushing mounting flange (22) for mounting the phase a conductor (5) and the bushing mounting flange (22) for mounting the phase C conductor (7) relative to the bushing mounting flange (22) for mounting the phase B conductor (6) are both 40 ° to 70 °.

4. The bushing outlet bus bar structure according to claim 1, wherein an adsorbent mounting flange (23) for mounting an adsorbent is further provided on the bushing housing (2); an adsorbent cover plate (3) or an adsorbent cover (4) is arranged on the adsorbent mounting flange (23).

5. The bushing outlet bus bar structure according to claim 1, wherein 4-5 flanges are arranged on the bushing housing (2).

6. The bushing outlet bus bar structure according to claim 1, wherein the bushing housing (2) is a one-piece structure; the casing (2) is an aluminum alloy casting; the length of the casing (2) is no more than 500 mm.

7. The bushing outlet bus bar structure according to claim 1, wherein the joints of the basin-type insulator (1) and the phase a conductor (5), the phase B conductor (6) and the phase C conductor (7) are distributed in an equilateral triangle or an isosceles triangle.

8. The casing outgoing bus bar structure as claimed in claim 1, wherein a spring contact finger or a watchband contact finger is arranged in the contact seat (8); the lower part of the casing outgoing line conductor (12) is connected with a spring contact finger or a watchband contact finger in the contact seat (8).

9. A bushing outlet bus bar structure according to claim 1, wherein each bushing mounting flange (22) is connected with the inner shielding ring (11) through a transition flange (10); the upper plane of the transition flange (10) is fixedly connected with the lower end of the sleeve (13).

10. A sleeved outlet bus structure according to claim 1, wherein the flange face on the sleeved outlet conductor (12) is aligned with the flange face on the top of the sleeve (13).

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