WO2020082930A1

WO2020082930A1 - High-voltage outlet structure of 750 kv shunt reactor

Info

Publication number: WO2020082930A1
Application number: PCT/CN2019/105774
Authority: WO
Inventors: 王献; 韩克俊; 李成君; 李洪波; 徐晓明; 李文杰; 李军; 李学成
Original assignee: 山东电力设备有限公司; 山东电工电气集团有限公司
Priority date: 2018-10-24
Filing date: 2019-09-12
Publication date: 2020-04-30
Also published as: EP3723106A4; EP3723106A1; CN109119227A

Abstract

A high-voltage outlet structure of a 750 kV shunt reactor, comprising an ascending seat (1), L-shaped fixing blocks (2) being fixedly mounted at positions of the bottom of the ascending seat (1) close to two sides thereof, each L-shaped fixing block (2) being provided with a plurality of fixing holes (3), a plurality of supporting blocks (4) being connected at the middle of the ascending seat (1), and a plurality of wire clips (5) being fixedly mounted on the surface of the ascending seat (1), a threaded groove (6) being provided inside each of the wire clips (5), a threaded pin (7) being threadedly connected to the inside of the threaded groove (6), an end of the threaded pin (7) being provided with a soft pad (8), the top of the ascending seat (1) being connected to an insulating paper cylinder (10) by means of a fastener (9), and a sleeve (11) being provided at a position inside the insulating paper cylinder (10) close to the top thereof, the bottom of the sleeve (11) being connected to the top of an insulating voltage-equalizing ball (12), and the insulating voltage-equalizing ball (12) being provided with a paper pulp layer (13), support strips (14) and a molded insulating member (15) in sequence from inside to outside, the bottom of the insulating voltage-equalizing ball (12) being connected to a voltage-equalizing tube (16), and an engaging block (17) being provided between the voltage-equalizing tube (16) and the insulating paper cylinder (10).

Description

High-voltage outlet structure of 750 kV parallel reactor

Cross-reference of related applications

This application is based on the Chinese patent application with the application number 2018112409281 and the application date is October 24, 2018, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by way of introduction.

Technical field

This application relates to the field of reactor outlet structure, in particular to a high-voltage outlet structure of a 750 kilovolt (kV) parallel reactor.

Background technique

750 kV ultra-high voltage parallel reactor high-voltage outlet generally adopts indirect outlet structure. The high-voltage outlet enters the outlet device composed of insulation parts, copper pipes, pressure equalizing rings, etc., and is then connected to the bushing terminal board. The outlet device and bushing are installed in the "elephant type" riser independent of the fuel tank. Because the reactor body acts as a source of vibration, the high-voltage "elephant type" riser is independent of the outside of the body's fuel tank, which has a great impact on the fuel tank. Shearing effect. Under the vibration of the reactor body of 100 Hertz (Hz), the independent "elephant type" riser poses a great safety hazard. At the same time, because the weight of the body and the raised seat is not much different, the two are only connected to the reinforced iron by the flange, and the seismic resistance is poor, which has a certain impact on people's use process. For this reason, we propose a 750 kV High-voltage outlet structure of parallel reactor.

Summary of the invention

The embodiments of the present application expect to provide a 750 kV parallel reactor high-voltage outlet structure, which can effectively solve the problems in the background art.

The technical solutions of the embodiments of the present application include:

An embodiment of the present application provides a 750 kV parallel reactor high-voltage outlet structure, including a riser, the bottom of the riser near both sides are fixedly installed with L-shaped fixed blocks, the L-shaped fixed block is provided with multiple A plurality of fixing holes, a plurality of support blocks are connected in the middle of the rising seat, and a plurality of wire clips are fixedly installed on the surface of the rising seat, the wire clips are in a rectangular frame, and a thread groove is opened on the outer side thereof, A threaded pin is connected to the internal thread of the groove, and a soft cushion block is provided at the end of the threaded pin. An insulating paper cylinder is connected to the top of the rising seat through a fastener. A sleeve, the bottom of the sleeve is connected to the top of the insulating pressure equalizing ball, and the insulating pressure equalizing ball is sequentially provided with a pulp layer, a stay and a shaped insulating member from the inner wall to the outer wall, and the bottom of the insulating pressure equalizing ball A pressure equalizing tube is provided with an connecting block between the pressure equalizing tube and the insulating paper tube.

In an optional embodiment of the present application, the L-shaped fixing block is fixedly connected to the raising seat through a fixing pin inserted into the fixing hole.

In an optional embodiment of the present application, an engagement piece is provided on the surfaces of the rising seat and the support block, and the bottom ends of the rising seat and the support block are welded to the fuel tank through the engagement piece.

In an optional embodiment of the present application, the number of the support blocks is three groups, and the support blocks are evenly distributed on the outer periphery of the raising seat in the circumferential direction.

In an optional embodiment of the present application, a flange and a reinforcing iron are provided between the rising seat and the pressure equalizing tube, and a mounting hole is opened at the bottom of the insulating paper tube.

In an alternative embodiment of the present application, the threaded pin is movably connected to the wire clamp through a threaded groove, and the surface of the threaded groove is coated with lubricating oil, and there is an adhesive between the soft cushion block and the end of the threaded pin mixture.

The embodiment of the present application has the following beneficial effects: the high-voltage outlet structure of the 750 kV parallel electrical appliance not only ensures the electrical strength and reliable insulation of the 750 kV outlet, but also ensures that the outlet structure and the bushing are installed on the tank body to avoid the occurrence of high-voltage riser seat pairs The shearing effect of the tank body improves the seismic resistance of the 750 kV shunt reactor to ensure the long-term safe operation of the reactor. It is more practical. The high-voltage outlet structure of the entire 750 kV shunt reactor is simple in structure, easy to operate, and the effect of use is relatively traditional. The way is better.

BRIEF DESCRIPTION

1 is a front view of a high-voltage outlet structure of a 750 kV parallel reactor according to an embodiment of the present application;

2 is a schematic structural view of an L-shaped fixed block of a 750 kV parallel reactor high-voltage outlet structure according to an embodiment of the present application;

3 is a side view of a high-voltage outlet structure of a 750 kV parallel reactor according to an embodiment of the present application;

4 is a cross-sectional view of a wire clamp of a high-voltage outlet structure of a 750 kV parallel reactor according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of an insulating equalizing ball of a high-voltage outlet structure of a 750 kV parallel reactor according to an embodiment of the present application.

In the picture: 1. Elevating seat; 2. L-shaped fixing block; 3. Fixing hole; 4. Support block; 5. Wire clamp; 6. Thread groove; 7. Threaded pin; 8. Soft cushion block; 9. Fastening 10. Insulating paper tube; 11. Sleeve; 12. Insulating equalizing ball; 13. Pulp layer; 14. Strut; 15. Forming insulating parts; 16. Equalizing tube; 17. Connecting block.

detailed description

As shown in FIGS. 1 to 5, an embodiment of the present application provides a 750 kV shunt reactor high-voltage outlet structure, including: a riser 1, an L-shaped fixing block is fixedly installed on the bottom of the riser 1 near both sides 2. The L-shaped fixing block 2 is provided with a plurality of fixing holes 3, a plurality of supporting blocks 4 are connected to the middle of the rising seat 1, and a plurality of wire clips 5 are fixedly installed on the surface of the rising seat 1, the wire clips 5 are rectangular The outer side of the frame is provided with a threaded groove 6, a threaded pin 7 is connected to the internal thread of the threaded groove 6, a soft cushion block 8 is provided at the end of the threaded pin 7, and the top of the raised seat 1 is connected with an insulation through a fastener 9 The paper tube 10 is provided with a sleeve 11 near the top inside the insulating paper tube 10, and the bottom of the sleeve 11 is connected to the top of the insulating pressure equalizing ball 12, and the insulating pressure equalizing ball 12 is sequentially provided with a pulp layer 13 from the inner wall to the outer wall. The stay 14 and the molded insulating member 15 are connected to the bottom of the insulating pressure equalizing ball 12 with a pressure equalizing tube 16. An connecting block 17 is provided between the pressure equalizing tube 16 and the insulating paper tube 10.

In an alternative embodiment of the present application, a fixing pin is provided between the L-shaped fixing block 2 and the raising seat 1, and the L-shaped fixing block 2 is fixedly connected to the raising seat 1 through a fixing pin inserted into the fixing hole 3, fixing The pin plays a fixed role.

In an optional embodiment of the present application, the surface of the lifting seat 1 and the support block 4 are provided with connecting pieces, and the bottom ends of the lifting seat 1 and the supporting block 4 are welded to the fuel tank through the connecting piece, the connecting piece can facilitate the lifting of the lifting seat 1 and support block 4 are fixed on the fuel tank.

In an optional embodiment of the present application, the number of the supporting blocks 4 is three groups, and the supporting blocks 4 are evenly distributed on the outer periphery of the raising seat 1 in the circumferential direction.

In an alternative embodiment of the present application, a flange and a reinforced iron are provided between the riser 1 and the pressure equalizing tube 16, a mounting hole is opened at the bottom of the insulating paper tube 10, and the flange and the reinforced iron are provided for the pressure equalizing tube 16 plays a fixed role in the riser 1.

In an alternative embodiment of the present application, the threaded pin 7 is movably connected to the wire clamp 5 through the threaded groove 6, and the surface of the threaded groove 6 is coated with lubricating oil, and there is an adhesive between the cushion block 8 and the threaded pin 7 Mixture, lubricating oil can reduce the friction of the contact surface and play the role of lubrication, and the adhesive can improve the stability of the connection between the cushion block 8 and the threaded pin 7.

It should be noted that the embodiment of the present application is a 750 kV shunt reactor high-voltage outlet structure. In use, the riser 1 constitutes the main part of the entire 750 kV shunt reactor high-voltage outlet structure, and the L-shaped fixed block 2 And the support block 4 can improve the seismic resistance of the 750 kV parallel reactor to ensure the long-term safe operation of the reactor. The raised seat 1 can ensure that the outlet structure and the bushing 11 are installed on the tank body to avoid the shearing effect of the high pressure on the tank body. The wire clamp 5 can facilitate the take-up of the wire. The threaded pin 7 moves relative to the wire clamp 5 through the thread groove 6 to clamp the wire, and the cushion block 8 acts as a buffer to the wire For the purpose of protection, the fastener 9 can facilitate the fixation between the insulating paper tube 10 and the riser 1, and the use of the insulating paper tube 10 and the insulating pressure ball 12 can ensure the electrical strength of the 750 kV outlet line and at the same time reliable insulation The pulp layer 13, the stays 14 and the shaped insulation 15 can ensure the insulation of the insulating pressure equalizing ball 12, the pressure equalizing tube 16 plays a role of guiding and limiting, and the connecting block 17 can improve the pressure equalizing tube 16 and the insulating Stability of the paper tube 10 is connected, the entire shunt reactors 750 kilovolt high pressure outlet structure simple structure, easy to operate, more practical.

The basic principles and main features of the embodiments of the present application and the advantages of the embodiments of the present application are shown and described above. Those skilled in the art should understand that this application is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the description only describe the principles of the embodiments of this application, without departing from the spirit and scope of the embodiments of this application. There will be various changes and improvements in the embodiments of the present application, and these changes and improvements fall within the protection scope of the claimed embodiments of the present application. The scope of protection required by the embodiments of the present application is defined by the appended claims and their equivalents.

Claims

A high-voltage outlet structure of a 750 kV parallel reactor includes an elevated seat (1), and the bottom of the elevated seat (1) is fixedly installed with an L-shaped fixing block (2) near both sides, and the L-shaped fixing block (2) A plurality of fixing holes (3) are provided, a plurality of supporting blocks (4) are connected in the middle of the raising seat (1), and a plurality of wire clamps (5) are fixedly installed on the outer surface of the raising seat (1) ), The wire clamp (5) has a rectangular frame, and a screw groove (6) is opened on the outer side thereof, and a screw pin (7) is connected to the inner thread of the screw groove (6), and the screw pin (7) A soft cushion block (8) is provided at the end of the device. An insulating paper tube (10) is connected to the top of the raised seat (1) through a fastener (9). The inside of the insulating paper tube (10) is near the top A sleeve (11) is provided, the bottom of the sleeve (11) is connected to the top of the insulating pressure equalizing ball (12), and the insulating pressure equalizing ball (12) is sequentially provided with a pulp layer (13) from the inner wall to the outer wall , A stay (14) and a molded insulating member (15), and a pressure equalizing tube (16) is connected to the bottom of the insulating equalizing ball (12), between the equalizing tube (16) and the insulating paper tube (10) There is a connecting block (17).
The high-voltage outlet structure of a 750 kV parallel reactor according to claim 1, wherein the L-shaped fixing block is fixedly connected to the raising seat (1) through a fixing pin inserted into the fixing hole (3).
A high-voltage outlet structure of a 750 kV parallel reactor according to claim 1, wherein the surfaces of the rising seat (1) and the supporting block (4) are provided with connecting pieces, and the rising seat (1) and the supporting block (4) The bottom end is welded to the fuel tank through the connecting piece.
A high-voltage outlet structure of a 750 kV parallel reactor according to claim 1, wherein the number of the support blocks (4) is three groups, and the support blocks (4) are evenly distributed on the rising seat (1) in the circumferential direction Outer periphery.
A high-voltage outlet structure of a 750 kV parallel reactor according to claim 1, wherein a flange and a reinforced iron are provided between the rising seat (1) and the equalizing pipe (16), and the insulating paper cylinder (10) The bottom is provided with mounting holes.
A high-voltage outlet structure of a 750 kV parallel reactor according to claim 1, wherein the threaded pin (7) is movably connected to the wire clamp (5) through a threaded groove (6), and the threaded groove (6) The surface is coated with lubricating oil, and an adhesive is provided between the soft cushion block (8) and the end of the threaded pin (7).