CN111834916A

CN111834916A - Integrated sealing assembly based on lightning protection arc extinguishing

Info

Publication number: CN111834916A
Application number: CN201910299437.2A
Authority: CN
Inventors: 王嬿蕾; 王巨丰; 周勇军; 王国锋; 黄萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-10-27

Abstract

The invention discloses an integrated sealing component based on lightning protection and arc extinction, which comprises a gas generating component, a sealing bag, a rotary table and an arc extinction cylinder, wherein a plurality of uniformly distributed grooves are formed in the disc surface of the rotary table along the circumferential direction, a gas injection hole is formed in the center of the bottom of each groove, the gas generating component is hermetically wrapped in the sealing bag, the upper half part of the sealing bag is hermetically wrapped and installed below an opening part at the top end of each groove and above the bottom of each groove, the lower half part of the sealing bag is sleeved in the arc extinction cylinder, and the arc extinction cylinder is used for supporting the sealing bag and providing supporting force when the lower half part of the sealing bag can extend into a cylinder opening at the top end of the arc extinction cylinder from the gas injection hole to be hermetically communicated, so that the lower half part of the sealing bag and the opening at the top. The sealing assembly can effectively improve the sealing performance of the airflow channel between the turntable and the arc extinguishing cylinder, so that the jet airflow can act on the electric arc to the maximum extent.

Description

Integrated sealing assembly based on lightning protection arc extinguishing

Technical Field

The invention belongs to the technical field of lightning protection and arc extinction, and particularly relates to an integrated sealing assembly based on lightning protection and arc extinction.

Background

The lightning protection of a power transmission line is always an important content of the lightning protection work of a power department, a lightning fault is still one of important factors influencing the safety of a power grid, the lightning factor is a main reason of fault tripping of the power transmission line for a long time, when the power transmission line is struck by lightning, an insulator on the power transmission line is subjected to flashover, power frequency follow current caused by flashover damages an insulator string and hardware fittings, the insulator string is burnt out, and a lead is burnt out. The application number of a Chinese patent is as follows: 201610747255.3, the patent names: thunder and lightning induction type solid phase arc extinguishing lightning protection device, this arc extinguishing lightning protection device is arc extinguishing ability reinforce, job stabilization is reliable, it is swift convenient to change arc extinguishing gas ball, nevertheless jet stream can produce in arc extinguishing carousel and arc extinguishing section of thick bamboo junction and reveal, it is abundant inadequately to the electric arc effect to consider the air current of concentrating not, thereby lead to the arc extinguishing ability and the lightning protection effect of arc extinguishing lightning protection device, for this reason, can hope jet stream maximize to act on electric arc and can promote the intensity of arc extinguishing air current through the leakproofness that improves arc extinguishing air current passageway, for this, consequently, an integration seal assembly based on lightning protection arc extinguishing has been proposed.

Disclosure of Invention

The invention aims to provide an integrated sealing assembly based on lightning protection and arc extinction, which can effectively improve the sealing property of an airflow channel between a turntable and an arc extinction cylinder, enables jet airflow to act on electric arcs to the maximum extent, improves the reliability of lightning protection and arc extinction, and simultaneously improves the safety of arc extinction and lightning protection. In order to achieve the above object, the present invention adopts the following technical effects:

according to one aspect of the invention, the sealing component comprises a gas generating component, a sealing bag, a rotary table and an arc extinguishing cylinder, wherein the disc surface of the rotary table is provided with a plurality of uniformly distributed grooves along the circumferential direction, the center of the bottom of each groove is provided with a gas injection hole, the gas generating component is hermetically covered in the sealing bag, the upper half part of the sealing bag is hermetically covered and installed below the opening part at the top end of the groove and above the bottom of the groove, the lower half part of the sealing bag is sleeved in the arc extinguishing cylinder, and the arc extinguishing cylinder is used for supporting the sealing bag and providing supporting force when the lower half part of the sealing bag can extend into the opening at the top end of the arc extinguishing cylinder from the gas injection hole to be hermetically communicated, so that the lower half part of the sealing bag and the opening at the top end of the arc extinguishing cylinder form a sealing state.

According to the scheme, the upper disc surface and the lower disc surface of the rotary disc are respectively provided with the bottom plate and the clamping plate, the sealing bag is sealed in the groove formed in the rotary disc through the bottom plate and the clamping plate, the sealing bag is provided with the sealing cavity part, the shoulder part extending from the lower end of the sealing cavity part and the neck part extending downwards from the shoulder part and gradually decreasing in size, the gas generation assembly is sealed in the sealing cavity part, the sealing cavity part is sealed in the groove between the top opening and the bottom end of the groove through the bottom plate and the clamping plate, the shoulder part) is fixed at the bottom end of the groove through the clamping plate in a clamping mode, and when the gas generation assembly is triggered to generate strong airflow in the sealing bag, the neck part of the sealing bag sequentially penetrates through the gas orifice and the clamping plate from top to bottom and is inserted into the top opening.

According to the scheme, the arc extinguishing device is further preferred, a rigid supporting shell is arranged above the top end cylinder opening of the arc extinguishing cylinder, and when the gas generating assembly is triggered to generate strong gas flow in the sealing bag, the neck of the sealing bag is inserted into the top end cylinder opening of the arc extinguishing cylinder through the supporting shell to be communicated in a sealing mode.

The scheme is further preferred, the upper end surface of the supporting shell is a smooth surface, the center of the upper end surface of the supporting shell is provided with an upper opening part, the lower end surface of the supporting shell is provided with a horn-shaped lower opening part, when the gas generation assembly is triggered to generate strong airflow in the sealed package, the neck of the sealed package is inserted into the upper opening part of the supporting shell, the lower opening of the supporting shell is communicated with the top end opening of the partial arc extinguishing cylinder in a sealing mode, and the neck of the sealed package is communicated with the top end opening of the partial arc extinguishing cylinder in a sealing mode through the top end opening of the supporting shell.

According to the scheme, the edge of the top end opening part of the arc extinguishing cylinder is provided with a spring (8), the spring is sleeved on the outer wall of the lower opening part of the support shell, the lower end of the spring is connected with the outer side of the edge of the top end opening part of the arc extinguishing cylinder, and the upper end of the spring is connected with the outer wall of the lower surface of the support shell.

In a further preferred embodiment of the above technical scheme, a U-shaped sealing ring is further disposed in the support housing, the U-shaped sealing ring is nested on an inner wall of an upper opening portion of the support housing, and when the gas generation assembly is triggered to generate a strong gas flow in the sealed package, and a neck portion of the sealed package is inserted into the upper opening portion of the support housing, an outer wall of an opening portion of the neck portion is in contact sealing with the U-shaped sealing ring.

In a further preferable mode of the above scheme, the gas generation assembly is composed of a trigger electrode, a gas pill and a frame body tightly wrapped around the outside of the gas pill in a surrounding manner, the bottom end of the frame body is provided with a gas nozzle, the gas nozzle and the neck) are arranged on the same vertical axis, and the trigger electrode sequentially penetrates out of the frame body from the inside of the gas pill to the top and is electrically connected with the bottom plate from the outside of the packaging cavity.

In a further preferred mode of the above scheme, one or more than two trigger electrodes are led out upwards from the gas pill.

In a further preferred embodiment of the present invention, the length of the neck is 1cm to 4cm, the diameter of the neck at the minimum is not more than 1cm, and the diameter of the neck at the maximum is not more than 2cm

In summary, due to the adoption of the technical scheme, the invention has the following technical effects:

(1) the sealing assembly disclosed by the invention is simple in structure, well prevents strong airflow from leaking, and can ensure that the generated strong airflow can act on an electric arc to the maximum.

(2) The invention skillfully integrates the switching mechanism and the sealing structure, has simple structure and uncomplicated connection relation, and greatly enhances the reliability of lightning protection and arc extinction. When producing the gas subassembly and producing strong air current in the sealed package for the support housing at arc extinguishing section of thick bamboo top can reciprocate (slide) under the spring action, and guarantee can not take place about skew, improved lightning protection arc extinguishing reliability, this seal assembly structure has also improved the security of arc extinguishing lightning protection simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of an integrated sealing assembly based on lightning protection and arc extinction;

FIG. 2 is a schematic structural view of the turntable of the present invention;

FIG. 3 is a schematic structural diagram of a gas generation assembly of the present invention.

In the attached drawings, a gas generating assembly 1, a seal package 2, a turntable 3, a bottom plate 4, a clamping plate 5, a support shell 6, a U-shaped seal ring 7, a spring 8, an arc extinguishing cylinder 9, a trigger electrode 10, a gas pill 11, a frame body 12, a gas nozzle 13, a packaging cavity part 20, a shoulder part 21, a neck part 22, a groove 30 and a gas injection hole 31.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

As shown in fig. 1, 2 and 3, according to an aspect of the present invention, there is provided an integrated seal assembly based on lightning protection and arc extinction, the seal assembly includes a gas generating assembly 1, a seal pack 2, a turntable 3, and an arc extinction cylinder 9, wherein a plurality of grooves 30 are uniformly distributed on a disk surface of the turntable 3 along a circumferential direction, a gas injection hole 31 is provided at a center of a bottom of each groove 30, the gas generating assembly 1 is hermetically wrapped in the seal pack 2, an upper half portion of the seal pack 2 is hermetically wrapped below and above a top opening portion of the groove 30, a lower half portion of the seal pack 2 is sleeved in the arc extinction cylinder 9, the arc extinction cylinder 9 is used for supporting the seal pack 2 and providing a supporting force when a lower half portion of the seal pack 2 can extend downward from the gas injection hole 31 into a top opening of the arc extinction cylinder 9 for hermetic communication, so that the lower half portion of the seal pack 2 and the top opening of the arc extinction cylinder 9 form a sealed state, when the gas generating assembly 1 is triggered one by one in the groove 30 on the turntable 3 to generate strong gas flow, the generated strong gas flow is sprayed under a sealed condition to achieve arc extinguishing operation, so that the gas generating assembly 1 is hermetically coated on a rotatable turntable 3, and when the gas generating assembly 1 is triggered one by one in the groove 30 on the turntable 3 to generate strong gas flow, the turntable 3 rotates one grid and the lower end opening of the sealed package 2 is inserted into the top end opening of the arc extinguishing cylinder 9 again to be communicated and form a sealed state; when the gas generating assembly 1 is triggered to generate strong gas flow in the seal packet 2, the arc extinguishing cylinder 9 is used for supporting the seal packet 2 and providing supporting elasticity for the seal communication with the gas injection hole 11 when the lower half part of the seal packet 2 can slide up and down relatively, the strong gas flow ejected by the gas injection hole 31 makes the lower half part of the seal packet 2 and the top end tube opening of the arc extinguishing cylinder 9 slide relatively under the action of the elastic force to be separated, when the elastic force disappears, the lower end opening of the sealing packet 2 extends downwards from the air injection hole 31 into the top end opening of the arc extinguishing cylinder 9 again for communication and sealing, and the lower end opening of the sealing packet 2 and the top end opening of the arc extinguishing cylinder 9 form a sealing state, therefore, the gas generating assembly 1 is hermetically coated on a rotatable turntable 3, and when the gas generating assembly 1 is triggered one by one in the groove 30 on the turntable 3 to generate strong gas flow, the generated strong gas flow is strongly sprayed under a sealed condition to achieve arc extinguishing operation.

In the invention, as shown in fig. 1 and fig. 2, a bottom plate 4 and a clamping plate 5 are respectively arranged on the upper disc surface and the lower disc surface of the rotary disc 3, the sealing bags 2 are respectively sealed in the grooves 30 arranged on the rotating disc 3 through the bottom plate 4 and the clamping plate 5, the sealed package 2 is provided with an enclosing cavity part 20, a shoulder part 21 extending from the lower end of the enclosing cavity part 20 and a neck part 22 extending downwards from the shoulder part 21 and gradually decreasing, the gas generating assembly 1 is sealed and arranged in the enclosing cavity part 20, the packaging cavity part 20 is sealed in the groove 30 between the top opening and the bottom end of the groove 30 through the bottom plate 4 and the clamping plate 5, the shoulder 21 is clamped and fixed at the bottom end of the groove 30 through the clamping plate 5, when the gas generating assembly 1 is triggered to generate strong gas flow in the sealing bag 2, the neck part 22 of the sealing bag 2 sequentially penetrates through the air injection hole 31 and the clamping plate 5 from top to bottom to be inserted into the top opening of the arc extinguishing cylinder 9 for sealing communication; a rigid supporting shell 6 is arranged above the top end tube opening of the arc extinguishing tube 9, and when the gas generating assembly 1 is triggered to generate strong gas flow in the sealed package 2, the neck 22 of the sealed package 2 is inserted into the top end tube opening of the arc extinguishing tube 9 through the supporting shell 6 for sealing communication; the upper end surface of the supporting shell 6 is a smooth surface, the center of the upper end surface of the supporting shell 6 is provided with an upper opening part, the lower end surface of the supporting shell 5 is provided with a horn-shaped lower opening part, when the gas generating assembly 1 is triggered to generate strong airflow in the sealed bag 2, the neck part 22 of the sealed bag 2 is inserted into the upper opening part of the supporting shell 6, the lower opening of the supporting shell 6 is hermetically communicated with the top cylinder opening of the arc extinguishing cylinder 9, so that the neck part 22 of the sealed bag 2 is hermetically communicated with the top cylinder opening of the arc extinguishing cylinder 9 through the supporting shell 6; be provided with spring 8 on the edge of the top nozzle portion of an arc extinguishing section of thick bamboo 9, this spring 8 cover is established on the outer wall of the lower opening portion of support housing 6, the lower extreme of this spring 8 with the edge outside of the top nozzle portion of an arc extinguishing section of thick bamboo 9 is connected, the upper end of spring 8 with support housing 6 lower surface outer wall connection, produce gas subassembly 1 when being triggered and produce strong air current in sealed package 2 for support housing on the top nozzle of an arc extinguishing section of thick bamboo 9 can reciprocate (slide) under the spring 8 effect.

A U-shaped sealing ring 7 is further arranged in the supporting shell 6, the U-shaped sealing ring 7 is nested on the inner wall of the upper opening part of the supporting shell 6, so that the neck part 2 and the supporting shell 6 are contacted through the U-shaped sealing ring 7 to play a sealing role, when the gas generating assembly 1 is triggered to generate strong gas flow in the sealing bag 2, and the neck part 22 of the sealing bag 2 is inserted into the upper opening part of the supporting shell 6, the outer wall of the opening part of the neck part 22 is contacted and sealed with the U-shaped sealing ring 7; the gas production assembly 1 is composed of a trigger electrode 10, a gas pill 11 and a frame body 12 tightly wrapped around the outer periphery of the gas pill in a surrounding manner, the bottom end of the frame body 12 is provided with a gas nozzle 13, the gas nozzle 13 and the outlet of a neck part 22 are on the same vertical axis, and the trigger electrode 10 sequentially penetrates out of the frame body 12 from the inside of the gas pill to the top and is electrically connected with the bottom plate 4 from the outside of a packaging cavity part 20; one or more than two trigger electrodes are led out upwards from the inside of the air ball 11; the length of the neck 22 is between 1cm and 4cm, so that when the spring 8 is compressed under the action of air flow, the neck 22 and the support shell 6 can be separated for enough time, so that the rotary disc enters the next sealing contact again when rotating, the diameter of the minimum part of the neck 22 is not more than 1cm, and the diameter of the maximum part of the neck 22 is not more than 2cm, so that the flow and the pressure when the gas is sprayed out are ensured, and the gas has enough impact force to act on the support shell 6 and compress the spring 8. The air ball 11 in the air generating component 1 is wrapped by the frame 12 from four sides, and air can still leak from the gap which is not wrapped by two sides, so an integrated sealing bag 2 is additionally arranged outside the air generating unit frame, the sealing bag 2 is clamped in the groove 30 arranged on the rotary disc 3, and the sealing bag is clamped by the bottom plate 4 and the clamping plate 5 of the rotary disc. The caliber of a lower end gas outlet (neck 22) of the sealing bag 2 is gradually reduced downwards and is similar to a sharp-mouth shape, a U-shaped sealing ring 7 is arranged above a cylindrical arc extinguishing cylinder 9, a rigid supporting shell 6 is arranged outside, the lower end face of the supporting shell 5 is provided with a horn-shaped lower opening part, the neck 22 is inserted into an upper end opening of the supporting shell 6 and is in contact sealing with a cylinder opening at the top end of the arc extinguishing cylinder 9 through the U-shaped sealing ring 7, a bottom gas outlet of the supporting shell 5 is similar to a horn shape and is gradually reduced downwards in caliber, the bottom end of the supporting shell 5 is embedded in the arc extinguishing cylinder 9, the supporting shell 5 is connected with the arc extinguishing cylinder through a spring 8, when the gas generating assembly 1 is triggered to generate a large amount of high-strength gas, the large amount of high-strength gas sprayed out from a gas spraying opening 13 of the sealing bag 2 passes through the U-shaped sealing ring 7, the sealing ring bulges around at high, so that most of the gas enters the arc chute 9. The spring 8 of junction receives the air current effect can be compressed for support housing 6 on the top nozzle of arc extinguishing tube 9 can reciprocate (slide) under the spring 8 effect, and the air current can recover after disappearing again, sends out to produce a large amount of high strength gas to in the time between the air current disappears, and spring 8's elasticity disappears, and the action of carousel 3 installation regulation rotates one check, can realize carrying out the screens in proper order to the sealed package 2 in each recess 30. When the gas production assembly 1 is triggered, the rotating disc rotates in a specific manner according to application No. 201610747255.3 with the patent name: thunder and lightning induction type solid phase arc extinguishing lightning protection device, adopt the technical scheme of the rotatory screens of this patent, not only guaranteed reliable rotation and reliable customization guarantee can reliably drag the position again after triggering, prevent that the carousel from turning by mistake, consequently, produce gas subassembly 1 when carousel 3 on the back triggered, jet stream can not produce at carousel and arc extinguishing section of thick bamboo junction and reveal, jet stream can maximize and act on the arc extinguishing section of thick bamboo, make the neck 22 and the rigid support casing 6 of sealed package 2 seal up under the effect of spring 8 and U type sealing washer 7 respectively.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides an integration seal assembly based on lightning protection arc extinguishing which characterized in that: the sealing component comprises a gas generating component (1), a sealing bag (2), a turntable (3) and an arc extinguishing cylinder (9), a plurality of grooves (30) which are uniformly distributed are arranged on the disc surface of the turntable (3) along the circumferential direction, the bottom center of each groove (30) is provided with a gas injection hole (31), the gas production assembly (1) is hermetically wrapped in the sealing bag (2), the upper half part of the sealing bag (2) is hermetically covered and arranged below the opening part at the top end of the groove (30) and above the bottom part, the lower half part of the sealing bag (2) is sleeved in the arc extinguishing cylinder (9), the arc extinguishing cylinder (9) is used for supporting the sealed package (2) and providing supporting force when the lower half part of the sealed package (2) can downwards extend into a top cylinder opening of the arc extinguishing cylinder (9) from the air injection hole (31) to be communicated in a sealing mode, so that the lower half part of the sealed package (2) and the top opening of the arc extinguishing cylinder (9) form a sealing state.

2. The integrated sealing assembly based on lightning protection arc extinction according to the claim 1 is characterized in that: the upper disc surface and the lower disc surface of the rotary disc (3) are respectively provided with a bottom plate (4) and a clamping plate (5), the sealing bag (2) is sealed in a groove (30) arranged on the rotary disc (3) through the bottom plate (4) and the clamping plate (5) respectively, the sealing bag (2) is provided with a packaging cavity part (20), a shoulder part (21) extending from the lower end of the packaging cavity part (20) and a neck part (22) extending downwards from the shoulder part (21) and gradually decreasing in size, the gas generating assembly (1) is sealed in the packaging cavity part (20), the packaging cavity part (20) is sealed in the groove (30) between the top opening and the bottom end of the groove (30) through the bottom plate (4) and the clamping plate (5), the shoulder part (21) is clamped and fixed at the bottom end of the groove (30) through the clamping plate (5), and when the gas generating assembly (1) is triggered in the sealing bag (2) to generate strong airflow, the neck (22) of the sealing bag (2) sequentially penetrates through the air injection hole (31) and the clamping plate (5) from top to bottom to be inserted into the top end opening of the arc extinguishing cylinder (9) to be communicated in a sealing mode.

3. The integrated sealing assembly based on lightning protection arc extinction according to the claim 2 is characterized in that: the gas generating device is characterized in that a rigid supporting shell (6) is arranged above a top end cylinder opening of the arc extinguishing cylinder (9), and when the gas generating assembly (1) is triggered to generate strong gas flow in the sealing bag (2), a neck (22) of the sealing bag (2) is inserted into the top end cylinder opening of the arc extinguishing cylinder (9) through the supporting shell (6) to be communicated in a sealing mode.

4. The integrated sealing assembly based on lightning protection arc extinction according to claim 3, is characterized in that: the utility model discloses a gas generator, including support casing (6), gas production subassembly (1), neck (22) of sealed package (2), support casing (6) and top tube socket, the last terminal surface of support casing (6) is the smooth surface, and the up end center of this support casing (6) has an upper shed, the lower terminal surface of support casing (5) has the lower opening portion of loudspeaker form, when gas production subassembly (1) is triggered in sealed package (2) and produces strong air current, the upper shed of support casing (6) is inserted in neck (22), the sealed intercommunication of the lower opening of support casing (6) and the sealed intercommunication of the top tube socket of a section of thick bamboo of extinguishing partially (9), makes the neck (22) of sealed package (2) seal up the intercommunication through the top tube socket of a section of thick bamboo.

5. The integrated sealing assembly based on lightning protection arc extinction according to claim 4, is characterized in that: be provided with spring (8) on the edge of the top cylinder opening portion of an arc extinguishing section of thick bamboo (9), this spring (8) cover is established on the outer wall of the lower opening portion of support casing (6), the lower extreme of this spring (8) with the edge outside of the top cylinder opening of an arc extinguishing section of thick bamboo (9) is connected, the upper end of spring (8) with support casing (6) lower surface outer wall connection.

6. The integrated sealing assembly based on lightning protection arc extinction according to claim 4 or 5, is characterized in that: the gas generating device is characterized in that a U-shaped sealing ring (7) is further arranged in the supporting shell (6), the U-shaped sealing ring (7) is nested on the inner wall of an upper opening portion of the supporting shell (6), when the gas generating assembly (1) is triggered to generate strong gas flow in the sealing bag (2), the outer wall of the opening portion of the neck portion (22) is in contact sealing with the U-shaped sealing ring (7) when the neck portion (22) of the sealing bag (2) is inserted into the upper opening portion of the supporting shell (6).

7. The integrated sealing assembly based on lightning protection arc extinction according to the claim 2 or 3, characterized in that: the gas production assembly (1) is composed of a trigger electrode (10), a gas pill (11) and a frame body (12) tightly wrapped around the outside of the gas pill in a surrounding mode, a gas jet port (13) is formed in the bottom end of the frame body (12), the gas jet port (13) and an outlet of a neck portion (22) are located on the same vertical axis, and the trigger electrode (10) penetrates out of the frame body (12) and the outside of a packaging cavity portion (20) upwards from the inside of the gas pill in sequence and is electrically connected with the bottom plate (4).

8. The integrated sealing assembly based on lightning protection arc extinction according to claim 6, is characterized in that: one or more than two trigger electrodes are led out upwards from the inside of the air pill (11).

9. The integrated sealing assembly based on lightning protection arc extinction according to the claim 1 is characterized in that: the length of the neck part (22) is between 1cm and 4cm, the diameter of the neck part (22) at the minimum part is not more than 1cm, and the diameter of the neck part (22) at the maximum part is not more than 2 cm.