CN111834907A

CN111834907A - Strong airflow seal assembly based on lightning protection arc extinguishing

Info

Publication number: CN111834907A
Application number: CN201910300002.5A
Authority: CN
Inventors: 王巨丰; 王嬿蕾; 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 a lightning-protection arc-extinguishing-based strong airflow sealing assembly which comprises a sealing sleeve, a cylinder and a rotary table, wherein a plurality of uniformly distributed air injection holes are formed in the surface of the rotary table along the circumferential direction, an air generation assembly for generating strong airflow gas is placed in the air injection holes in a sealing manner, the sealing sleeve is installed at an outlet of each air injection hole, when the air generation assembly generates strong airflow once, the rotary table rotates one grid and enables the outlet of each air injection hole to be communicated with an injection hole at the top end of the sealing sleeve, the cylinder is sleeved in the sealing sleeve, and the cylinder is used for supporting the sealing sleeve and providing supporting force for the sealing communication with the air injection holes when the supporting sealing sleeve can slide up and down relatively. The sealing assembly disclosed by the invention is simple in structure, the oblique section of the sealing sleeve well prevents strong airflow from leaking, and the generated strong airflow can be ensured to act on an electric arc to the maximum.

Description

Strong airflow seal 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 a strong airflow 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, a strong air current seal assembly based on lightning protection arc extinguishing has been proposed.

Disclosure of Invention

The invention aims to provide a strong airflow sealing assembly based on lightning protection arc extinguishing, which can well prevent strong airflow from leaking, effectively improve the effectiveness of the strong airflow on electric arc and improve the reliability of lightning protection arc extinguishing. In order to achieve the above object, the present invention adopts the following technical effects:

according to one aspect of the invention, the sealing assembly comprises a sealing sleeve, a cylinder and a rotary table, wherein a plurality of uniformly distributed gas injection holes are formed in the disc surface of the rotary table along the circumferential direction, a gas generation assembly for generating strong gas flow is placed in each gas injection hole in a sealing mode, the sealing sleeve is installed at an outlet of each gas injection hole, each time the gas generation assembly generates strong gas flow, each rotary table rotates one grid, the outlet of each gas injection hole is communicated with a top injection hole of the sealing sleeve, the cylinder is sleeved in the sealing sleeve, and the cylinder is used for supporting the sealing sleeve and providing supporting force for the sealing communication between the supporting sealing sleeve and the gas injection holes when the supporting sealing sleeve can slide up and down relatively.

Preferably, the sealing sleeve is sleeved from the top end of the cylinder body to the bottom end of the cylinder body, and the inside of the sealing sleeve can be in up-and-down reciprocating sliding contact with the outer wall of the cylinder body.

In a further preferred embodiment of the above scheme, a spring is disposed at the top end of the cylinder, the upper end of the spring is connected to the sealing sleeve, and the lower end of the spring is connected to the top end of the cylinder, so that the sealing sleeve can slide up and down relatively to provide a supporting force.

Preferably, the upper end of the spring is connected with the inside of the top end of the sealing sleeve, and the lower end of the spring is connected with the section of the top end of the cylinder.

According to the scheme, the top end section of the cylinder body cylinder is preferably provided with a spring hole, the spring hole (4) vertically extends downwards between the inner side wall and the outer side wall of the cylinder body cylinder, the middle lower part of the spring is arranged in the spring hole, and the upper end of the spring is connected with the inside of the top end of the sealing sleeve.

Preferably, a shoulder is transversely cut at the outer side wall of the middle or middle lower part of the sealing sleeve along the center of the sealing sleeve, a neck is cut along the lower end direction of the sealing sleeve between the inner edge of the shoulder and the inner wall of the sealing sleeve, the spring is sleeved on the outer wall of the upper part of the neck, the lower half part of the neck is inserted into the cylinder and is in sliding contact connection with the inner side wall of the cylinder, the upper end of the spring is connected with the shoulder, and the lower end of the spring is connected with the top end section of the cylinder.

Above-mentioned scheme is further preferred, the top of sealing sleeve to the bottom direction be a concave hourglass shape, this bottom export that leaks hopper-shaped with cylinder drum top nozzle aligns, the export of fumarole and the upper end entry butt joint intercommunication that mouthful leaks hopper-shaped, and the export of fumarole, cylinder drum top nozzle and the bottom export of leaking hopper-shaped all on same vertical axis.

The above scheme is further preferable, the number of the spring holes arranged on the top end section of the cylinder body is more than 4, the spring holes are distributed on the top end section of the cylinder body at equal intervals, and one spring is placed in each spring hole.

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

(1) the sealing assembly is simple in structure, the oblique section of the sealing sleeve well prevents strong airflow from leaking, and the generated strong airflow can be guaranteed to act on the electric arc to the maximum.

(2) The switching mechanism and the sealing structure are skillfully integrated, so that the lightning protection and arc extinguishing reliability is greatly enhanced. When the gas generating assembly generates strong airflow at the sealing sleeve, the sealing sleeve can slide up and down under the action of the spring, and the left and right deviation is avoided, so that the lightning protection arc extinguishing reliability is improved.

Drawings

FIG. 1 is a schematic structural diagram of a strong airflow sealing assembly based on lightning protection arc extinction according to the invention;

FIG. 2 is a schematic diagram of a first embodiment of a high-airflow sealing assembly based on lightning protection and arc extinction;

FIG. 3 is a schematic structural view of the sealing sleeve of the present invention;

FIG. 4 is a schematic structural diagram of a second embodiment of a high-airflow sealing assembly based on lightning protection and arc extinction;

FIG. 5 is a schematic view of a connection structure of a sealing sleeve and a cylinder barrel of a second embodiment of the present invention;

FIG. 6 is a schematic structural view of a cylindrical barrel of a second embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a third embodiment of a high-airflow sealing assembly based on lightning protection and arc extinction;

FIG. 8 is a schematic structural view of a third embodiment of a sealing sleeve of the present invention;

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 and 2, according to an aspect of the present invention, there is provided a high-airflow sealing assembly based on lightning-protection arc extinguishing, the sealing assembly includes a sealing sleeve 1, a cylinder 3 and a turntable 10, a plurality of evenly distributed gas injection holes 11 are formed on a surface of the turntable 10 along a circumferential direction, a gas generation assembly 5 generating high-airflow gas is hermetically placed in the gas injection holes 11, the gas generation assembly 5 is placed in the gas injection holes of the turntable 10, the turntable 10 is enclosed in a housing of the apparatus, the housing is made of an insulating material, so that the turntable 10 is sealed by the housing 100 from the outside of the turntable 10, the housing 100 also seals the gas generation assembly 5 in the gas injection holes 11 in the turntable and rotates along a rotating shaft 101, the gas generation assembly 5 is connected with an induction coil (not shown) by a trigger electrode 7, when an arc current is generated by a lightning transmission line, the induction coil triggers the current to flow through the trigger electrode, thereby triggering the gas generating component 5, realizing the starting point of the electric arc, and quickly extinguishing the electric arc at the moment of the ignition of the electric arc. The gas generating assembly 5 is triggered and the rotating shaft 101 rotates in a manner that can be referred to application number 201610747255.3, which has the patent name: thunder and lightning induction type solid-phase arc extinguishing lightning protection device adopts the technical scheme of the rotatory screens of this patent, has not only guaranteed reliable rotation and reliable customization and has guaranteed to reliably drag the position again after triggering, places the carousel mistake and turns. The sealing sleeve 3 is arranged below the outlet of the gas orifice 11, when the gas production assembly 5 produces strong gas flow once, the rotary table 10 rotates one grid by the rotating shaft 101 and enables the outlet of the gas orifice 11 to be communicated with the top end injection port of the sealing sleeve 1, the cylinder 3 is sleeved in the sealing sleeve 1, and the cylinder 3 is used for supporting the sealing sleeve 1 and providing supporting force for sealing and communicating the supporting sealing sleeve 1 with the gas orifice 11 when the supporting sealing sleeve 1 can slide up and down relatively; the sealing sleeve 1 is sleeved from the top end of the cylinder 3 to the bottom end of the cylinder 3, the inner part of the sealing sleeve 1 can be in up-and-down reciprocating sliding contact with the outer wall of the cylinder 3, the inner diameter of the sealing sleeve 1 is slightly larger than that of the cylinder 3, so that the sealing sleeve can be sleeved on the cylinder 3, the sealing sleeve 1 covers the cylinder 3 from the top end of the cylinder 3 downwards, when a trigger electrode 7 connected between the turntable 10 and the gas generation component 5 is triggered through an induction coil, the gas generation component 5 in the gas injection hole 11 generates strong gas flow, the outlet of the gas injection hole 11 downwards sprays the strong gas flow, so that the sealing sleeve 1 can downwards move under the action of the strong gas flow, the sealing sleeve 1 can be ensured to move up and down in a certain range, after the strong gas flow is reduced or disappeared, the turntable 10 rotates one lattice, so that the sealing sleeve 1 upwards slides and is in butt joint communication with the outlet of the next gas injection hole on the turntable 10, the sealing sleeve 1 returns to the original position under the action of the supporting force, the top end injection port of the sealing sleeve 1 is in sealed butt joint with the outlet of the gas injection hole 11, so that the sealing sleeve 1 is communicated with the outlet of the gas injection hole, and the gas generation assembly 5 is waited to be triggered next time to generate strong gas flow.

Example 1: as shown in fig. 2, a spring 2 is disposed at the top end of the cylinder 3, the upper end of the spring 2 is connected to the sealing sleeve 1, and the lower end of the spring 2 is connected to the top end of the cylinder 3, so that the sealing sleeve 1 can slide up and down relatively to provide a supporting force, and the sealing sleeve 1 can be sleeved on the cylinder 3 because the inner diameter of the sealing sleeve 1 is slightly larger than that of the cylinder 3, and the sealing sleeve 1 can move up and down within a certain range under the action of the spring 2. As the sealing sleeve 1 and the cylinder 3 both need to have corresponding thickness as support, the thickness is about 1-2cm, and the material thereof must resist high temperature and high pressure, such as polyester fiber and the like.

In the present invention, as shown in fig. 3, the top end of the sealing sleeve 1 is a concave funnel-shaped part 6 towards the bottom end, the bottom end outlet of the funnel-shaped part 6 is aligned with the top end opening of the column cylinder 3, since the upper end of the sealing sleeve 1 is concave funnel-shaped, the outlet of the gas orifice 11 is in butt-joint communication with the upper end inlet of the funnel-shaped part 6, and the outlet of the gas orifice 11, the top end opening of the column cylinder 3 and the bottom end outlet of the funnel-shaped part (6) are all on the same vertical axis; when the gas generation assembly 5 generates strong gas flow at the gas injection hole 11, the gas flow is injected to the upper end inlet of the funnel-shaped 6, so that the sealing sleeve 1 can move (slide) downwards under the action of the strong gas flow, the concave funnel-shaped 6 has a wrapping effect on the surrounding gas flow, the strong gas flow generated by the gas generation assembly 5 is effectively prevented from leaking outwards, when the strong gas flow is reduced or disappears, the spring 2 recovers the original length, and meanwhile, the sealing sleeve 1 returns to the original position. The inner diameter of the spring 2 is slightly larger than that of the cylinder 3, so that the bottom of the spring 2 is fixed at the top of the cylinder 3, and the whole spring is nested around the inner wall of the sealing sleeve 1 to play a role in connecting the cylinder 3 and the sealing sleeve 1.

Example 2: this embodiment is different from embodiment 1 in that, as shown in fig. 4 and 5, the upper end of the spring 2 is connected to the inside of the top end of the sealing sleeve 1, and the lower end of the spring 2 is connected to the top end section of the cylinder 3. In the present invention, as shown in fig. 4, 5 and 6, a spring hole 4 is provided on a top end section of a cylinder 3, the spring hole 4 vertically extends downward between an inner side wall and an outer side wall of the cylinder 3, a middle lower portion of the spring 2 is disposed in the spring hole 4, an upper end of the spring 2 is connected with an inside of a top end of the sealing sleeve 1, the number of the spring holes 4 provided on the top end section of the cylinder 3 is more than 4, each spring hole 4 is disposed on the top end section of the cylinder 3 in an equally spaced manner, and one spring 2 is disposed in each spring hole 4; the spring 2 is supported by the cylinder 3, so that the sealing sleeve 1 can slide up and down relatively to provide a supporting force; during specific implementation, six or more than six spring holes 4 are formed in the cylinder 3, each spring hole 4 is internally provided with a telescopic spring, the inner diameter of the sealing sleeve 1 is slightly larger than that of the cylinder 3, so that the sealing sleeve can be sleeved on the cylinder 3, and the sealing sleeve 1 can move up and down in a certain range under the action of the springs 2. The top of sealing sleeve 1 to the bottom direction be a concave hourglass shape 6, this bottom export that leaks hopper-shaped 6 with 3 top mouths of cylinder drum align, and on same vertical axis, the upper end shape of sealing sleeve 1 is for concave hourglass hopper-shaped, when producing gas subassembly 5 and produce strong air current at fumarole 11, the air current spouts to 6 export that leaks hopper-shaped, make sealing sleeve 1 can move down under the effect of strong air current, because concave hourglass hopper-shaped 6 has the parcel effect to air current all around, the strong air current that produces gas subassembly 5 and produced has effectively been prevented leaks all around, after strong air current reduces or disappears, original length is recovered to spring 2, original position is got back to sealing sleeve 1 simultaneously. The inner diameter of the spring 2 is slightly larger than that of the cylinder 3, so that the bottom of the spring 2 is fixed at the top of the cylinder 3, and the whole spring is nested around the inner wall of the sealing sleeve 1 to play a role in connecting the cylinder 3 and the sealing sleeve 1. The top end of the sealing sleeve 1 is a funnel-shaped inclined section, so that strong airflow is well prevented from leaking, the generated strong airflow can be guaranteed to act on an electric arc to the maximum, a switching mechanism and a sealing structure can be skillfully integrated by the sealing assembly, and the lightning protection and arc extinguishing reliability is greatly enhanced.

Example 3: the difference between this embodiment and

embodiments

1 and 2 is that, as shown in fig. 7 and 8, a shoulder 100 is cut transversely at the outer side wall of the middle or middle lower part of the sealing sleeve 1 along the center of the sealing sleeve 1, and a neck 101 is cut along the lower end direction of the sealing sleeve 1 between the inner edge of the shoulder 100 and the inner wall of the sealing sleeve 1, so that the sealing sleeve 1 is divided into an upper part and a lower part, the inner diameters of the upper part and the lower part are the same, but the outer diameter of the upper part is larger than the outer diameter of the lower part, the lower part of the sealing sleeve 1 is a thin-walled hollow cylinder, the outer diameter of the thin-walled hollow cylinder is slightly smaller than the inner diameter of the cylinder, so that the sealing sleeve 1 can be stretched up and down under the action of the spring 1, and left and right deflection is prevented, so that reliability is improved, the spring 2 is sleeved outside the structure of the lower part of, the bottom at 1 upper portion of sealing sleeve structure is fixed at spring 1 top, therefore, spring 2 cover is in on the outer wall of the first half of neck 101, the latter half of this neck 101 insert in the cylinder drum 3 and with the inside wall sliding contact of cylinder drum 3, and the upper end of this spring 2 with shoulder 100 is connected, the lower extreme of spring 2 with the top cross-section of cylinder drum 3 is connected, thereby is in with spring 2 joint between the top cross-section of shoulder 100 and cylinder drum 3, the top to bottom direction of sealing sleeve 1 is a concave hourglass hopper-shaped 6, this bottom export of leaking hopper-shaped 6 with 3 top mouths of cylinder drum align, and on same vertical axis. Referring to fig. 2, the upper end of the sealing sleeve 1 is in a concave funnel shape, when the gas generation assembly 5 generates strong gas flow in the gas injection hole 11, the outlet of the gas injection hole 11 sprays the strong gas flow downwards, the sprayed strong gas flow enters the inlet end of the concave funnel-shaped 6 and then enters the cylinder barrel 3 from the gas flow spraying to the outlet end of the funnel-shaped 6, at this time, the sealing sleeve 1 can move downwards under the action of the strong gas flow, because the concave funnel-shaped 6 has a wrapping effect on the peripheral gas flow, the strong gas flow generated by the gas generation assembly 5 is effectively prevented from leaking outwards, when the strong gas flow is reduced or disappeared, the turntable 10 rotates one grid, the spring 2 recovers the original length, the outlet of the gas injection hole 11 is in butt joint communication with the upper end inlet of the next port funnel-shaped 6 on the turntable 10 again, and the sealing sleeve 1 returns to the original position, the spring 2 is sleeved on, the bottom of the spring 2 is fixed on the top of the cylinder 3 to play a role of supporting and connecting the sealing sleeve 11, the top end of the sealing sleeve 1 is a funnel-shaped inclined section to well prevent strong airflow from leaking, and the generated strong airflow can be ensured to act on an electric arc to the maximum.

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 a strong air current seal assembly based on lightning protection arc extinguishing which characterized in that: the sealing assembly comprises a sealing sleeve (1), a cylinder barrel (3) and a rotary table (10), wherein a plurality of uniformly distributed gas spraying holes (11) are formed in the disc surface of the rotary table (10) in the circumferential direction, a gas production assembly (5) which generates strong gas flow is placed in the gas spraying holes (11) in a sealed mode, the gas production assembly is installed at an outlet of each gas spraying hole (11), when the gas production assembly (5) generates strong gas flow once, each rotary table (10) rotates one grid and enables an outlet of each gas spraying hole (11) to be communicated with a spraying port at the top end of the sealing sleeve (1), the cylinder barrel (3) is sleeved in the sealing sleeve (1), and the cylinder barrel (3) is used for supporting the sealing sleeve (1) and does the supporting of the sealing sleeve (1) and provides supporting force for the sealing communication of the gas spraying holes (11) in a sealed mode when the supporting sealing sleeve (1) can slide up and down.

2. The strong airflow seal assembly based on lightning protection arc extinction according to claim 1, characterized in that: the sealing sleeve (1) is sleeved from the top end of the cylinder body (3) to the bottom end of the cylinder body (3) and can enable the interior of the sealing sleeve (1) to be in up-and-down reciprocating sliding contact with the outer wall of the cylinder body (3).

3. The strong airflow seal assembly based on lightning protection arc extinction according to claim 2, characterized in that: the top end of the cylinder barrel (3) is provided with a spring (2), the upper end of the spring (2) is connected with the sealing sleeve (1), and the lower end of the spring (2) is connected with the top end of the cylinder barrel (3), so that the sealing sleeve (1) can slide up and down relatively to provide supporting force.

4. The strong airflow seal assembly based on lightning protection arc extinction according to claim 3, characterized in that: the upper end of the spring (2) is connected with the inside of the top end of the sealing sleeve (1), and the lower end of the spring (2) is connected with the section of the top end of the cylinder (3).

5. The strong airflow seal assembly based on lightning protection arc extinction according to claim 3, characterized in that: the spring hole (4) is formed in the cross section of the top end of the cylinder (3), the spring hole (4) vertically extends downwards between the inner side wall and the outer side wall of the cylinder (3), the middle lower portion of the spring (2) is arranged in the spring hole (4), and the upper end of the spring (2) is connected with the inside of the top end of the sealing sleeve (1).

6. The strong airflow seal assembly based on lightning protection arc extinction according to claim 2, characterized in that: a shoulder (100) is transversely cut at the outer side wall of the middle or middle lower part of the sealing sleeve (1) and along the center of the sealing sleeve (1), a neck (101) is cut along the lower end direction of the sealing sleeve (1) and between the inner edge of the shoulder (100) and the inner wall of the sealing sleeve (1), the spring (2) is sleeved on the outer wall of the upper part of the neck (101), the lower half part of the neck (101) is inserted into the cylinder (3) and is in sliding contact connection with the inner side wall of the cylinder (3), the upper end of the spring (2) is connected with the shoulder (100), and the lower end of the spring (2) is connected with the top end section of the cylinder (3).

7. A strong airflow seal assembly based on lightning protection and extinguishing according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: the top of sealing sleeve (1) to the bottom direction be a concave hourglass hopper-shaped (6), this bottom export that leaks hopper-shaped (6) with cylinder drum (3) top nozzle aligns, the export of fumarole (11) and the upper end entry butt joint intercommunication that mouthful leaks hopper-shaped (6), and the export of fumarole (11), cylinder drum (3) top nozzle and the bottom export of leaking hopper-shaped (6) all on same vertical axis.

8. The strong airflow seal assembly based on lightning protection arc extinction according to claim 5, characterized in that: the number of the spring holes (4) formed in the top end section of the cylinder (3) is more than 4, the spring holes (4) are distributed on the top end section of the cylinder (3) at equal intervals, and one spring (2) is placed in each spring hole (4).