CN211789995U

CN211789995U - High-protection and heat-dissipation type double-shielding contact box for high-voltage switch cabinet

Info

Publication number: CN211789995U
Application number: CN202020094379.8U
Authority: CN
Inventors: 余红英; 李冰峰; 余万兴; 吴志峰; 余顺峰; 姜珊; 周争优
Original assignee: Zhejiang Kaihua Qiyi Electrical Equipment Co ltd
Current assignee: Zhejiang Kaihua Qiyi Electrical Equipment Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-10-27
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a contact box technical field for the high tension switchgear, and disclose a high protection, heat dissipation type double-shielded contact box for high tension switchgear, comprises a box bod, the box body inner chamber has been seted up to the inside of box body, top movable mounting have static contact installation inserts, the fixed surface of box body installs annular parachute kit, the louvre has been seted up at the top of box body, the top fixed mounting of box body has the U-shaped bus to advance to go out the line box. According to the high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet, the static contact installation insert and the integrated static contact are arranged, when the high-protection and heat-dissipation type double-shielding contact box is installed, a busbar and the static contact of the contact box are isolated in two spaces, the busbar is located in the space with the open top, and the plurality of heat dissipation holes are formed between the two independent spaces, so that air convection between the compartments is realized, the temperature rise is improved, the protection grade between the compartments is improved, and the operation reliability and the safety of an electric power system are improved.

Description

High-protection and heat-dissipation type double-shielding contact box for high-voltage switch cabinet

Technical Field

The utility model relates to a contact box technical field for the high tension switchgear specifically is a high protection, heat dissipation type double-shielded contact box for high tension switchgear.

Background

The high-voltage switch cabinet is one of the most important parts in the power system, and once a connection junction between a power grid and a user fails, serious consequences such as equipment damage or user power failure are possibly caused, therefore, with the development of the power industry and a series of fault problems occurring in the operation of the high-voltage switch cabinet, the requirements on the protection grade and the performance of the contact box used in the cabinet are increased, the contact box for the prior high-voltage switch cabinet is in a sleeve shape, and because the problems of universality and temperature rise of large and small current penetration and drainage are considered during the structural design of the product, the protection grades between the compartments of the switch cabinet can not meet IP4X, the operation safety and the maintenance safety between the compartments of the switch cabinet are influenced, and because the product adopts single shielding structure, it is very easy to take place interphase air gap discharge, and serious person takes place the insulating failure and leads to the circuit outage accident, therefore the insulating problem of high tension switchgear receives the attention of power company all the time.

In order to improve the insulating property of the switch cabinet and limit the temperature rise of the switch cabinet, a plurality of improvements have been proposed on the design structure and the installation process of an insulating part in the past year, therefore, the known field has appeared a single-shield contact box with a Z-shaped installation mode, the contact box is provided with a voltage-sharing shield at the bottom surface of the cylinder body and a static contact mounting insert side, so that air gap discharge between the static contact and the epoxy surface of the cylinder bottom is eliminated, but also reduces the interphase distance, is easy to cause interphase air gap discharge, and the bus outlet of the contact box is communicated with the inlet and the outlet of the movable contact arm, while good ventilation between compartments helps to reduce temperature rise and condensation, when one compartment fails, the arc can strike the other compartment, causing an extended accident, therefore, the practicability and the universality of the contact box are reduced, and the high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a high-tension switchgear is with high protection, heat dissipation type double-shielded contact box possesses advantages such as protection level height, has solved when a compartment breaks down, and electric arc can strike other compartments, causes the accident to enlarge to the practicality that has reduced the contact box and the problem of commonality.

(II) technical scheme

For realizing the high purpose of above-mentioned protection level, the utility model provides a following technical scheme: a high-protection and heat-dissipation type double-shielding contact box for a high-voltage switch cabinet comprises a box body, wherein a box inner cavity is formed in the box body, a static contact mounting insert is movably mounted at the top of the box body, an annular umbrella cluster is fixedly mounted on the outer surface of the box body, heat dissipation holes are formed in the top of the box body, a U-shaped bus inlet and outlet box is fixedly mounted at the top of the box body, a U-shaped ring wall is fixedly mounted on the outer surface of the U-shaped bus inlet and outlet box, a bottom umbrella cluster is fixedly mounted at the bottom of the U-shaped bus inlet and outlet box, a U-shaped shield is movably mounted at the top of the U-shaped bus inlet and outlet box, a high-voltage shielding ring is fixedly mounted in the box body, a grounding shielding ring is fixedly mounted in the box body and movably connected with the static contact mounting insert, and a mounting, the top fixed mounting of mounting flange dish has the product installation inserts that quantity is four, four product installation inserts all with ground connection shield ring fixed connection.

Preferably, the box body is a barrel-shaped body with a hollow interior and a missing bottom, and the inner side of the box body is a smooth surface.

Preferably, the top of the box body is provided with a mounting hole matched with the static contact mounting insert and the integrated static contact in size, and the static contact mounting insert can be replaced by the integrated static contact.

Preferably, a vent hole is formed between one side of the U-shaped bus inlet and outlet line box opposite to the inner cavity of the box body, and the U-shaped shield is of a detachable structure.

Preferably, the annular umbrella group comprises an upper annular umbrella group and a lower annular umbrella group, and the upper annular umbrella group and the lower annular umbrella group are symmetrically distributed at the upper end and the lower end of the outer surface of the box body.

Preferably, the high-voltage shielding ring and the grounding shielding ring are both positioned in the epoxy layer of the box body.

(III) advantageous effects

Compared with the prior art, the utility model provides a high-tension switchgear is with high protection, heat dissipation type double-shielded contact box possesses following beneficial effect:

this high tension switchgear is with high protection, heat dissipation type double-shielded contact box, through being provided with static contact installation inserts and integral type static contact, when the installation, female arranging and the static contact of contact box are kept apart in two spaces, and female arranging is in open space in top, be equipped with a plurality of louvres between these two independent spaces, consequently both realized that the air convection between the compartment improves the temperature rise, the protection grade between the compartment has been promoted again, because contact box inside is equipped with high-pressure shield ring and ground connection shield ring, the effectual electric field distribution that has improved, solved the inner wall of box body and move, air gap discharge and alternate discharge between the static contact, electric power system's operational reliability and security have been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional structural view of the present invention;

FIG. 3 is a top view of the structure of the present invention;

fig. 4 is a front cross-sectional structure view of the static contact and the installation insert thereof of the present invention in an integrated structure;

fig. 5 is a front sectional structure view of the detachable protective cover of the present invention.

In the figure: the device comprises a U-shaped annular wall 1, a static contact mounting insert 2, a box body 3, an annular umbrella group 4, a high-voltage shielding ring 5, a grounding shielding ring 6, a box body inner cavity 7, an 8U-shaped bus inlet and outlet box, an umbrella group at the bottom 9, a product mounting insert 10, heat dissipation holes 11, a mounting flange 12, an integrated static contact 13 and a U-shaped shield 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-5, a high-protection and heat-dissipation double-shielded contact box for a high-voltage switch cabinet comprises a box body 3, the box body 3 is a hollow barrel-shaped body with a missing bottom, the inner side of the box body 3 is a smooth surface, a box body inner cavity 7 is arranged inside the box body 3, a static contact mounting insert 2 is movably mounted at the top of the box body 3, mounting holes matched with the static contact mounting insert 2 and the integrated static contact 13 in size are formed at the top of the box body 3, the static contact mounting insert 2 can be replaced by an integrated static contact 13, an annular umbrella group 4 is fixedly mounted on the outer surface of the box body 3, the annular umbrella group 4 comprises an upper annular umbrella group and a lower annular umbrella group, the upper annular umbrella group and the lower annular umbrella group are symmetrically distributed at the upper end and the lower end of the outer surface of the box body 3, heat dissipation holes 11 are formed at the top of the box, a vent hole is arranged between one side of the U-shaped bus inlet and outlet box 8 opposite to the inner cavity 7 of the box body, a U-shaped shield 14 is of a detachable structure, the outer surface of the U-shaped bus inlet and outlet box 8 is fixedly provided with a U-shaped annular wall 1, the bottom of the U-shaped bus inlet and outlet box 8 is fixedly provided with a bottom umbrella group 9, the top of the U-shaped bus inlet and outlet box 8 is movably provided with the U-shaped shield 14, the box body 3 is internally and fixedly provided with a high-voltage shielding ring 5, the box body 3 is internally and fixedly provided with a grounding shielding ring 6, the high-voltage shielding ring 5 and the grounding shielding ring 6 are both positioned in an epoxy layer of the box body 3, the high-voltage shielding ring 5 is movably connected with a static contact mounting insert 2, the middle of the outer surface of the box body 3 is fixedly provided with a mounting flange 12, the top of the mounting flange 12, by arranging the static contact installation insert 2 and the integrated static contact 13, when the electric power system is installed, a busbar and the static contact of the contact box are isolated in two spaces, the busbar is positioned in a space with an open top, and a plurality of heat dissipation holes 11 are formed between the two independent spaces, so that air convection between compartments is realized, temperature rise is improved, and the protection grade between the compartments is improved.

When the high-voltage shielding ring 5 and the grounding shielding ring 6 are used, the electric field distribution is effectively improved, the air gap discharge and the interphase discharge between the inner wall of the box body 3 and the moving contact and the static contact are solved, and the operation reliability and the safety of a power system are improved.

In summary, the high-protection and heat-dissipation type double-shielded contact box for the high-voltage switch cabinet is provided with the static contact mounting insert 2 and the integrated static contact 13, when the contact box is installed, the bus bar and the static contact of the contact box are isolated in two spaces, the bus bar is positioned in the space with the open top, a plurality of heat dissipation holes 11 are arranged between the two independent spaces, thus not only realizing the air convection between the compartments to improve the temperature rise, but also improving the protection grade between the compartments, because the high-voltage shielding ring 5 and the grounding shielding ring 6 are arranged in the contact box, the electric field distribution is effectively improved, the air gap discharge and the interphase discharge between the inner wall of the box body 3 and the moving contact and the static contact are solved, the operation reliability and the safety of a power system are improved, the problem that when one compartment fails is solved, the electric arc can impact other compartments to cause the expansion of accidents, thereby reducing the problems of practicability and universality of the contact box.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high protection, heat dissipation type double-shielded contact box for high tension switchgear, includes box body (3), its characterized in that: the improved high-voltage shielding box comprises a box body (3), wherein a box body inner cavity (7) is formed in the box body (3), a static contact mounting insert (2) is movably mounted at the top of the box body (3), an annular umbrella group (4) is fixedly mounted on the outer surface of the box body (3), a heat dissipation hole (11) is formed in the top of the box body (3), a U-shaped bus incoming and outgoing line box (8) is fixedly mounted at the top of the box body (3), a U-shaped ring wall (1) is fixedly mounted on the outer surface of the U-shaped bus incoming and outgoing line box (8), a bottom umbrella group (9) is fixedly mounted at the bottom of the U-shaped bus incoming and outgoing line box (8), a U-shaped shield (14) is movably mounted at the top of the U-shaped bus incoming and outgoing line box (8), a high-voltage shielding ring (5) is fixedly mounted in the box body (3), a grounding shielding ring (6) is fixedly mounted in the, the middle of box body (3) surface fixed mounting has mounting flange dish (12), the top fixed mounting of mounting flange dish (12) has product installation inserts (10) that quantity is four, four product installation inserts (10) all with ground connection shield ring (6) fixed connection.

2. The high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet according to claim 1, wherein: the box body (3) is a hollow barrel-shaped body with the bottom missing, and the inner side of the box body (3) is a smooth surface.

3. The high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet according to claim 1, wherein: the top of the box body (3) is provided with a mounting hole matched with the static contact mounting insert (2) and the integrated static contact (13) in size, and the static contact mounting insert (2) can be replaced by the integrated static contact (13).

4. The high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet according to claim 1, wherein: a vent hole is formed between one side of the U-shaped bus inlet and outlet box (8) opposite to the inner cavity (7) of the box body, and the U-shaped shield (14) is of a detachable structure.

5. The high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet according to claim 1, wherein: the annular umbrella group (4) comprises an upper annular umbrella group and a lower annular umbrella group, and the upper annular umbrella group and the lower annular umbrella group are symmetrically distributed at the upper end and the lower end of the outer surface of the box body (3).

6. The high-protection and heat-dissipation type double-shielding contact box for the high-voltage switch cabinet according to claim 1, wherein: the high-voltage shielding ring (5) and the grounding shielding ring (6) are both positioned in the epoxy layer of the box body (3).