CN212625388U

CN212625388U - Explosion-proof separator

Info

Publication number: CN212625388U
Application number: CN202021886922.4U
Authority: CN
Inventors: 石成建; 黄建
Original assignee: Zhejiang Fafa Electric Co ltd
Current assignee: Zhejiang Fafa Electric Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-02-26
Anticipated expiration: 2030-09-02

Abstract

The utility model discloses an explosion-proof separator, which comprises a shell (1) and a wiring bolt (2); a fastening nut (22) and a wiring nut (23) are sleeved on the wiring bolt (2), and a conductive gasket (24) is arranged between the fastening nut (22) and the wiring nut (23); a cylindrical counter bore (25) is formed in the cap end of the wiring bolt (2), a sliding column (26) is arranged in the cylindrical counter bore (25), and a spring (27) is arranged between the sliding column (26) and the bottom end of the cylindrical counter bore (25); a U-shaped plate (14) and a V-shaped plate (15) are arranged in the shell (1), and a thermal explosion tube (17) is arranged between the U-shaped plate (14) and the V-shaped plate (15); an electric connecting post (3) is also arranged in the shell (1), and the electric connecting post (3) is abutted against the V-shaped plate (15); the utility model provides an explosion-proof disconnector of this kind has made the improvement to circuit connection, makes circuit connection more reliable and stable, can not become flexible because of the ageing of spring.

Description

Explosion-proof separator

Technical Field

The utility model belongs to the technical field of the disconnector, an explosion-proof disconnector particularly.

Background

The separator is divided into a hot-melting separator and a thermal explosion separator according to the using principle and performance, wherein the thermal explosion separator is connected with the lightning arrester in series, when the lightning arrester in operation ages, the power frequency current passing through the lightning arrester and the separator is too large, the continuous too large power frequency current causes the resistance temperature in the separator to rise, and the thermal explosion element is detonated to achieve the purpose of separation, so that the phase lightning arrester is quitted from operation.

As shown in a 10KV lightning arrester disconnector disclosed in chinese patent document 201920872215.0, a common explosion-proof disconnector mainly contacts an electrical connection terminal with a thermal explosion tube through a spring member, so as to achieve the purpose of connecting a circuit, and the disadvantage of this electrical connection method is that: the extrusion force generated by the spring is easy to weaken due to aging, and then the contact between the electric connection end and the thermal explosion tube is unstable.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides an explosion-proof disconnector, on prior art's basis, made the improvement to circuit connection, made its circuit connection more reliable and stable, can not produce contact failure's problem because of the ageing of spring.

The technical scheme of the utility model is realized like this:

the utility model provides an explosion-proof disconnector, includes casing, wiring bolt, the bottom of casing is the open end, the top of casing is equipped with the through-hole, the casing is worn out from the through-hole to wiring bolt's one end, wiring bolt's cap end supports and leans on the internal face of casing, the cover is equipped with fastening nut, wiring nut on the section that wiring bolt wore out the casing, be equipped with conductive washer between fastening nut and the wiring nut.

A cylindrical counter bore is formed in the cap end, located in the shell, of the wiring bolt, a sliding column is arranged in the cylindrical counter bore, and a spring is arranged between the sliding column and the bottom end of the cylindrical counter bore; the casing is equipped with U-shaped board and V-shaped board in, the both ends of U-shaped board and V-shaped board all are equipped with straight extension section.

The opening orientation of U-shaped plate the binding bolt, the traveller supports and leans on the U-shaped plate, the opening orientation of V-shaped plate the open end of casing, be equipped with hot booster between U-shaped plate and the V-shaped plate, the straight extension of U-shaped plate and V-shaped plate supports respectively and leans on the both ends border of hot booster.

The shell is also internally provided with an electric connecting post, and the top end of the electric connecting post is in a circular truncated cone shape and is abutted against the straight extending sections at the two ends of the V-shaped plate; the other end of the electric connecting column is provided with a threaded hole, the open end of the shell is provided with a sealing cover, the electric connecting column is sleeved in the sealing cover, and the sealing cover is provided with a second through hole communicated with the threaded hole.

As the utility model discloses an improvement, the top of casing is equipped with the sealed counter bore that sets up with the through-hole is concentric, the cover is equipped with first sealing washer on the wiring bolt, and this first sealing washer imbeds in the sealed counter bore.

As an improvement of the utility model, still be equipped with the second sealing washer in the casing, be equipped with the bulge loop on the periphery of connecting the electric pole, the second sealing washer cover is established connect the top of electric pole and with the bulge loop offsets and leans on.

Compared with the prior art, implement the utility model provides an explosion-proof disconnector, following beneficial effect has:

1. the circuit communication is realized by placing the thermal explosion tube between the U-shaped plate and the V-shaped plate, so that the contact stability of the device is improved; even if the spring is ageing the back, the thermal explosion pipe still can lean on with U-shaped board and V-shaped board counterbalance, keeps the circuit to stably switch on.

2. When the thermal explosion tube is heated and exploded, the V-shaped plate can absorb partial kinetic energy by generating certain elastic deformation, so that the separation of the electric connecting column is smoother.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic diagram showing the separate structures of the U-shaped plate and the V-shaped plate.

Reference numerals: the device comprises a shell 1, an open end 11, a through hole 12, a sealing counter bore 13, a U-shaped plate 14, a V-shaped plate 15, a straight extension section 16, a thermal explosion tube 17 and a sealing cover 18; the connecting bolt 2, the first sealing ring 21, the fastening nut 22, the connecting nut 23, the conductive washer 24, the cylindrical counter bore 25, the sliding column 26 and the spring 27; the electric pole 3, the second sealing ring 31, the convex ring 32, the threaded hole 33 and the second through hole 34.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-2, the explosion-proof disconnector in the present solution comprises a housing 1, a wiring bolt 2; the bottom end of the shell 1 is an opening end 11, and the top end is provided with a through hole 12; the cap end 21 of the wiring bolt is abutted against the inner wall surface of the shell 1, and the other end of the wiring bolt penetrates out of the shell 1 from the through hole 12; a first sealing ring 21, a fastening nut 22 and a wiring nut 23 are sequentially arranged on the section of the wiring bolt 2 penetrating out of the shell 1; a conductive washer 24 is provided between the fastening nut 22 and the terminal nut 23.

The top end of the shell 1 is provided with a sealing counter bore 13 which is concentric with the through hole 12, and the first sealing ring 21 is embedded in the sealing counter bore 13.

The cap end of the wiring bolt 2 in the shell 1 is provided with a cylindrical counter bore 25, a sliding column 26 is arranged in the cylindrical counter bore 25, and a spring 27 is arranged between the sliding column 26 and the bottom end of the cylindrical counter bore 25.

A U-shaped plate 14 and a V-shaped plate 15 are arranged in the shell 1, and straight extension sections 16 are arranged at two ends of the U-shaped plate 14 and the V-shaped plate 15.

The opening of the U-shaped plate 14 faces the wiring bolt 2, and the sliding column 26 abuts against the U-shaped plate 14; the opening of the V-shaped plate 15 faces the opening end of the shell 1, a thermal detonation tube 17 is arranged between the U-shaped plate 14 and the V-shaped plate 15, and the straight extension sections 16 of the U-shaped plate 14 and the V-shaped plate 14 respectively abut against two end edges of the thermal detonation tube 17.

The shell 1 is also internally provided with an electric pole 3 and a second sealing ring 31; the top end of the electric connecting post 3 is in a circular truncated cone shape and is abutted against the straight extension section 16 on the V-shaped plate 15.

A convex ring 32 is arranged on the circumferential surface of the electric connecting column 3, and a second sealing ring 31 is sleeved at the top end of the electric connecting column 3 and abuts against the convex ring 32. The other end of the electric connecting column 3 is provided with a threaded hole 33. The open end 11 of the shell 1 is provided with a sealing cover 18, the electric connecting column 3 is sleeved in the sealing cover 18, and the sealing cover 18 is provided with a second through hole 34 communicated with the threaded hole 33.

In practical applications, the explosion-proof disconnector is mainly used in the field of electric power, such as lightning protection devices for high-voltage lines. The explosion-proof separation is connected with the binding post of the lightning arrester through the threaded hole 33, and the sliding column 26 presses the U-shaped plate 14 under the action of the spring force, so that the U-shaped plate 14 and the V-shaped plate 15 are abutted against the two ends of the thermal detonator.

The fastening nut 22 on the binding bolt 2 is used for fastening the binding bolt 2 on the shell 1, and then the conductive washer 24 (connected with the grounding wire) is fixed on the binding bolt 2 through the binding nut 23, and the circuit of the whole explosion-proof disconnector is conducted completely.

When the high-voltage circuit is struck by lightning or has other power faults, the current in the explosion-proof disconnector is abnormal, the thermal explosion tube 17 explodes due to high temperature, impact force is generated to disconnect the electric connecting column 3, and the grounding circuit is disconnected.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof disconnector, includes casing (1), wiring bolt (2), the bottom of casing (1) is open end (11), the top of casing (1) is equipped with through-hole (12), casing (1) is worn out from through-hole (12) to the one end of wiring bolt (2), the cap end of wiring bolt (2) is supported and is leaned on the internal face of casing (1), the cover is equipped with fastening nut (22), wiring nut (23) on the section that casing (1) was worn out in wiring bolt (2), be equipped with conductive washer (24) between fastening nut (22) and wiring nut (23), its characterized in that:

a cylindrical counter bore (25) is formed in the cap end of the wiring bolt (2), a sliding column (26) is arranged in the cylindrical counter bore (25), and a spring (27) is arranged between the sliding column (26) and the bottom end of the cylindrical counter bore (25);

a U-shaped plate (14) and a V-shaped plate (15) are arranged in the shell (1), and straight extension sections (16) are arranged at two ends of the U-shaped plate (14) and the V-shaped plate (15);

the opening of the U-shaped plate (14) faces the wiring bolt (2), the sliding column (26) abuts against the U-shaped plate (14), the opening of the V-shaped plate (15) faces the opening end of the shell (1), a thermal explosion tube (17) is arranged between the U-shaped plate (14) and the V-shaped plate (15), and straight extension sections (16) of the U-shaped plate (14) and the V-shaped plate (15) abut against the edges of two ends of the thermal explosion tube (17) respectively;

an electric connecting post (3) is further arranged in the shell (1), and the top end of the electric connecting post (3) is in a circular truncated cone shape and is abutted against straight extension sections (16) at two ends of the V-shaped plate (15);

the other end of the electric connecting column (3) is provided with a threaded hole (33), a sealing cover (18) is arranged on the opening end (11) of the shell (1), the electric connecting column (3) is sleeved in the sealing cover (18), and a second through hole (34) communicated with the threaded hole (33) is formed in the sealing cover (18).

2. An explosion-proof release mechanism according to claim 1, wherein; the top of the shell (1) is provided with a sealing counter bore (13) which is concentric with the through hole (12), the wiring bolt (2) is sleeved with a first sealing ring (21), and the first sealing ring (21) is embedded into the sealing counter bore (13).

3. An explosion-proof release device according to claim 2, wherein; still be equipped with second sealing washer (31) in casing (1), be equipped with bulge loop (32) on the periphery of electric post (3), second sealing washer (31) cover is established the top of electric post (3) and with bulge loop (32) are supported and are leaned on.