CN209658604U - A kind of sealing joint component based on lightning protection arc extinguishing airflow channel - Google Patents

Abstract

The utility model discloses a kind of sealing joint components based on lightning protection arc extinguishing airflow channel, the sealing joint component includes sealing shell, sealed interface connection component, produce pneumatic module, arc extinguishing cylinder and turntable, sealed interface connection component, it produces pneumatic module and turntable sealing is set in sealing shell, in the disk of turntable and peripherally disposed there are several equally distributed grooves, the bottom centre of each groove is provided with fumarole, the production pneumatic module is sealed and coated in the groove, the upper end of sealed interface connection component is connected to the mutual closed butt joint of fumarole, the top of the arc extinguishing cylinder is penetrated upwards in the bottom of sealing shell, and the top that the lower end of sealed interface connection component is socketed in the arc extinguishing cylinder is subjected to elastic connection, contact the upper end of sealed interface connection component in succession by elastic tight with fumarole It is logical.The utility model can improve the leakproofness of airflow channel between arc extinguishing turntable and arc extinguishing cylinder, and jet-stream wind maximization is made to act on electric arc.

Description

A kind of sealing joint component based on lightning protection arc extinguishing airflow channel

Technical field

The utility model belongs to lightning protection arc extinguishing technical field more particularly to a kind of interface based on lightning protection arc extinguishing airflow channel Seal assembly.

Background technique

Transmission line of electricity lightning protection always is the important content of power department Thunder Protection, and lightning fault is still influence power grid One of the key factor of safety, for a long time, thunder and lightning factor are the main reason for transmission line malfunction trip, when transmission line of electricity is sent out Raw lightning stroke, leads to the insulator arc-over on transmission line of electricity, and the power frequency continued flow risen therewith damages insulator chain and fitting, causes Insulator chain burns and blows conducting wire accident, generally uses transmission line of electricity to install line thunder protection device additional this power department and protects to realize Shield.One Chinese patent application No. is: 201610747255.3, patent name are as follows: thunder and lightning induction type solid phase arc extinguishing lightning protection device, When arc extinguishing gas ball is in trigger bit, trigger electrode is blocked by locating bar, and when arc extinguishing gas ball is triggered, arc extinguishing gas ball generates strong Air-flow is bent trigger electrode to groove, and the end of trigger electrode is retracted arc extinguishing turntable, and arc extinguishing turntable is in plane scroll spring Under the action of rotate, until next hair production pneumatic module enter trigger bit, the trigger electrode to match therewith is blocked by locating bar, this is led Although type solid phase arc extinguishing lightning protection device arc extinguishing ability is strong, stable and reliable in work, replacement arc extinguishing gas ball is efficient and convenient, jet-stream wind meeting Leakage is generated in arc extinguishing turntable and arc extinguishing cylinder junction, it is contemplated that the air-flow that do not concentrate is not enough arcing, to lead The arc extinguishing ability and lightning protection effect of arc extinguishing lightning protection device are caused, for this purpose, can wish that jet-stream wind maximization acts on electric arc and can lead to The leakproofness of raising arc extinguishing airflow channel interface is crossed to promote the intensity of arc extinguishing air-flow, for this purpose, therefore proposing a kind of based on anti- The sealing joint component of thunder arc extinguishing airflow channel.

Utility model content

The purpose of this utility model is to provide a kind of sealing joint components based on lightning protection arc extinguishing airflow channel, this is practical Novel sealing joint component can improve the leakproofness of airflow channel between arc extinguishing turntable and arc extinguishing cylinder, maximize jet-stream wind Act on electric arc.To achieve the goals above, the utility model uses following technical effect:

One aspect according to the present utility model provides a kind of sealing joint group based on lightning protection arc extinguishing airflow channel Part, the sealing joint component includes sealing shell, sealed interface connection component, produces pneumatic module, arc extinguishing cylinder and turntable, described close Sealing-in mouth connection component, production pneumatic module and turntable sealing are set in sealing shell, in the disk of turntable and along the circumferential direction Several equally distributed grooves are provided with, the bottom centre of each groove is provided with fumarole, the production pneumatic module sealing In the groove, the upper end of the sealed interface connection component is connected to cladding with the mutual closed butt joint of fumarole, the arc extinguishing The top of cylinder is penetrated upwards in the bottom of sealing shell, and the lower end of sealed interface connection component is socketed in the arc extinguishing cylinder Top carry out elastic connection, contact the upper end of sealed interface connection component by elastic tight with fumarole and be docked and connected.

Above scheme is described it is further preferred that the sealed interface connection component includes elastic external member and supporing shell Elastic external member is socketed in the top of the arc extinguishing cylinder, and the upper and lower ends of the supporing shell are respectively provided with upper opening portion and under shed Portion, the fumarole of the bottom of the groove with the upper opening portion of the supporing shell is in sealing contact is connected to, the supporing shell Under shed portion is connected to the top connection of elastic external member, and the top of the arc extinguishing cylinder connects the support by elastic external member support Shell separates the upper opening portion of supporing shell under the action of the elastic external member with the fumarole of bottom portion of groove or close Sealing-in touching connection.

Above scheme is it is further preferred that be provided with support frame producing pneumatic module periphery, which passes through support Framework sealing is supported and fixed in groove, offers through-hole identical with the fumarole size in the bottom of support frame.

Above scheme on the bottom end inner wall of support frame it is further preferred that be provided with L-type ring set, the production pneumatic module It is arranged on the bottom end inner wall of support frame by the support of L-type ring set.

Above scheme is it is further preferred that be vertically arranged with gold between the inner sidewall and L-type ring set of the support frame Belong to pipe fitting, the lower end of the metal tube is arranged on the bottom of support frame, and the upper end of the metal tube is close to support frame Top inner wall.

Above scheme is opened in supporing shell it is further preferred that be provided with U-shaped sealing ring in the supporing shell Skirt is arranged at oral area, which is nested in the gap between the upper end of U-shaped sealing ring and the upper opening portion of supporing shell, The upper end opening portion of the skirt is connected to the fumarole, arc extinguishing cylinder top protrude into the under shed portion of supporing shell and with U-shaped sealing ring is in close contact, and is connected to the top of arc extinguishing cylinder with the under shed portion of supporing shell.

It is further preferred that the top of the arc extinguishing cylinder has supporting section and neck, which is supporting above scheme On section and to the arc extinguishing cylinder central reduction, the elastic external member is socketed on neck, the upper end of the elastic external member with it is described The connection of supporing shell lower end outer wall, the lower end of the elastic external member are connected on supporting section, so that supporing shell support be made to connect It connects on elastic external member, the upper end of the neck is protruded into the under shed portion of supporing shell and is in close contact with U-shaped sealing ring.

It is further preferred that the upper end outer wall in the neck is provided with annular clamping portion, which is clamped above scheme Portion is vertically protruded outward along the end outer wall of neck, it is described annular clamping portion protrude into supporing shell under shed portion and with it is U-shaped close Seal is in close contact.

Above scheme it is further preferred that it is described annular clamping portion protrude into the under shed portion of supporing shell after, the annular snap Socket part is connected in the gap between the U-shaped sealing ring and supporing shell bottom.

Above scheme it is further preferred that it is described annular clamping portion protrude into the under shed portion of supporing shell after, the annular snap Socket part is connected on the U-shaped sealing ring bottom end inner wall.

For above scheme it is further preferred that the length of the neck is between 1.2cm-4cm, which is 2mm ~30mm.

Above scheme is it is further preferred that the material of the U-shaped sealing ring is rubber or silica gel.

In conclusion the utility model has following technical effect that since the utility model uses above-mentioned technical proposal

(1), the seal component architecture of the utility model is simple, well prevents air blast and leaks, and can guarantee to generate Air blast maximization act on electric arc.

(2), handover mechanism and sealing structure are dexterously integrated by the utility model, and structure is simple, and connection relationship is not Complexity greatly enhances lightning protection arc extinguishing reliability.When production pneumatic module generates air blast in turntable, so that close at the top of arc extinguishing cylinder Sealing-in mouth connection component can move up and down (vibration) under the effect of elasticity and be sealed contact, and guarantee that left and right will not occur Offset, improves lightning protection arc extinguishing reliability, which also improves the safety of arc extinguishing lightning protection simultaneously.

Detailed description of the invention

Fig. 1 is a kind of structure principle chart of sealing joint component based on lightning protection arc extinguishing airflow channel of the utility model；

Fig. 2 is the attachment structure schematic diagram between the turntable of the utility model, sealed interface connection component and arc extinguishing cylinder.

Fig. 3 is the structural schematic diagram of the U-shaped sealing ring of the utility model；

Fig. 4 is the structural schematic diagram connecting between the supporing shell of the utility model and arc extinguishing cylinder；

In attached drawing, sealed interface connection component 1 produces pneumatic module 2, support frame 3, L-type ring set 4, fumarole 5, skirt 6, U Type sealing ring 7, elastic external member 8, arc extinguishing cylinder 9, supporing shell 10, turntable 11, groove 12, metal tube 13, trigger electrode 14, on Opening portion 10a, under shed portion 10b, U-shaped groove 70, supporting section 90, neck 91, annular clamping portion 92, sealing shell 100 turn Axis 101

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, referring to the drawings and enumerate excellent Embodiment is selected, the utility model is further described.However, it is necessary to illustrate, many details listed in specification It is specific even without these just for the sake of making reader have a thorough explanation to the one or more aspects of the utility model Details also may be implemented the utility model these aspect.

As depicted in figs. 1 and 2, one aspect according to the present utility model provides a kind of logical based on lightning protection arc extinguishing air-flow The sealing joint component in road, the sealing joint component include sealing shell 100, sealed interface connection component 1, produce pneumatic module 2, Arc extinguishing cylinder 9 and turntable 11, the sealed interface connection component 1, production pneumatic module 2 and the sealing of turntable 11 are set in sealing shell 100 It is interior, in the disk of turntable 11 and it is peripherally disposed have several equally distributed grooves 12, at the bottom of each groove 12 Portion is provided centrally with fumarole 5, and the production pneumatic module 2 is sealed and coated in the groove 12, the sealed interface connection component 1 Upper end be connected to the mutual closed butt joint of fumarole 5, the top of the arc extinguishing cylinder 9 is penetrated upwards in the bottom of sealing shell 100, And the top that the lower end of sealed interface connection component 1 is socketed in the arc extinguishing cylinder 9 is subjected to elastic connection, connects sealed interface The upper end of connected components 1 is contacted by elastic tight with fumarole 5 and is docked and connected；Support frame is provided with producing 2 periphery of pneumatic module 3, which is supported and fixed in groove 12 by the sealing of support frame 3, is offered and institute in the bottom of support frame 3 The identical through-hole of 5 size of fumarole is stated, is provided with L-type ring set 4 on the bottom end inner wall for producing pneumatic module 2, which passes through The support of L-type ring set 4 is arranged on the bottom end inner wall of support frame 3, between the inner sidewall and L-type ring set 4 of the support frame 3 It is vertically arranged with metal tube 13, the lower end of the metal tube 13 is arranged on the bottom of support frame 3, and metal tube 13 is aluminium The metal tubes such as pipe, iron pipe or steel pipe, the top inner wall of the upper end of the metal tube 13 close to support frame 3.The production gas group Part 2 is gas ball, and trigger electrode 14 leads to support frame 3 out of production pneumatic module 2, support frame 3 wrapped up outside gas ball, when gas ball When air pressure discharges, due to the effect of high temperature air blast, the L-type ring set 4 in 3 bottom interior wall of support frame, which can expand outwardly, to be made It is close to metal tube 13, which will squeeze between the inner sidewall of support frame 3, to enhance production gas The leakproofness in groove 12 of component 2 enters most high temperature air blasts by fumarole 5 and sealed interface connection component 1 It is discharged in the arc extinguishing cylinder 9 of lower section, to achieve the purpose that the operation of arc extinguishing.

In the present invention, as depicted in figs. 1 and 2, the sealed interface connection component 1 includes elastic external member 8 and branch Shell 10 is supportted, elastic external member 8 is telescoping tube or spring, and the arc extinguishing cylinder 9 is cylindrical barrel, and internal is hollow form, arc extinguishing cylinder 9 Top connect with telescoping tube；The elastic external member 8 is socketed in the top of the arc extinguishing cylinder 9, the supporing shell 10 up and down Both ends are respectively provided with upper opening portion 10a and under shed portion 10b, the fumarole 5 of the bottom of the groove 12 and the supporing shell 10 upper opening portion 10a connection in sealing contact, the under shed portion 10b of the supporing shell 10 are connected to the top of elastic external member 8 Connection, the top of the arc extinguishing cylinder 9 connect the supporing shell 10 by the support of elastic external member 8, make supporing shell 10 on open Oral area 10a is separated under the action of elastic external member 8 with the fumarole 5 of 12 bottom of groove or connection in sealing contact.In U-shaped sealing ring 7 is provided in the supporing shell 10, as shown in figure 3,7 center of U-shaped sealing ring is in a U-shaped groove 70, In It is arranged with skirt 6 at the upper opening portion 10a of supporing shell 10, which is nested in upper end and the supporing shell of U-shaped sealing ring 7 In gap between 10 upper opening portion 10a, the upper end opening portion of the skirt 6 is connected to the fumarole 5, the arc extinguishing cylinder 9 tops are protruded into the under shed portion 10b of supporing shell 10 and are in close contact with U-shaped sealing ring 7, and top and the support of arc extinguishing cylinder 9 are made The under shed portion 10b of shell 10 is connected to.In the present invention, it produces the gas ball in pneumatic module 2 and is supported framework 3 from four sides Package, avoids high temperature air blast and reveals from gap, when production pneumatic module 2, which is triggered, generates a large amount of high-intensity-gas, and will The gap produced between pneumatic module 2 and support frame 3 is blocked, and is entered most air-flows from sealed interface connection component 1 and is gone out In arc cylinder 9, sealed interface connection component 1 can be compressed by airflow function, and air-flow can restore again after disappearing, and hair generates a large amount of high-strength It spends in gas to the time between air-flow disappearance, the elastic force of sealed interface connection component 1 disappears, and 11 installation provision of turntable moves Rotate a lattice, can be realized and successively carries out detent to the production pneumatic module 2 in each groove 12.When production pneumatic module 2 is triggered, Turntable turns 11 dynamic modes specifically can be with application reference number for 201610747255.3, patent name are as follows: thunder and lightning induction type solid phase Arc extinguishing lightning protection device not only ensure that reliable rotation and reliable customization ensure that touching using the technical solution of patent rotation detent It can be reliably dragged again after hair, prevent turntable from misrouting, therefore, after the production pneumatic module 2 on turntable 11 is triggered, in groove 12 and sprayed When projecting the high temperature air blast generated, turntable 11 will not be generated with 9 junction of arc extinguishing cylinder by sealed interface connection component 1 and be let out Dew, jet-stream wind maximizing act on arc extinguishing cylinder, but also producing pneumatic module 2 and rigid support shell 10 respectively in elastic external member 8 and U-shaped sealing ring 7 under the action of be sealed.

In the present invention, in conjunction with shown in Fig. 2 and Fig. 4, the top of the arc extinguishing cylinder 9 has supporting section 90 and neck 91, the length of the neck 91 is between 1.2cm-4cm, it is ensured that elastic external member 8 is compressed under the effect of high temperature air blast When, so that elastic external member 8 there are enough compression distances on neck 91, supporing shell 10 there can be enough separate with fumarole 5 Time, to reenter next time in sealing contact when turntable rotation, 91 diameter of neck is 2mm~30mm, to protect Demonstrate,proved high temperature air blast spray when flow and pressure, make high temperature air blast have enough impact force actions in supporing shell 10 simultaneously Elastic external member 8 is compressed；The neck 91 is on supporting section 90 and to 9 central reduction of arc extinguishing cylinder, the elasticity External member 8 is socketed on neck 91, and the upper end of the elastic external member 8 is connect with 10 lower end outer wall of supporing shell, the resilient sleeve The lower end of part 8 is connected on supporting section 90, so that it is connected to the support of supporing shell 10 on elastic external member 8, the neck 91 Upper end protrude into the under shed portion 10b of supporing shell 10 and be in close contact with U-shaped sealing ring 7, neck 91 is from sealing shell 100 Bottom end is penetrated in it upwards, and the outer wall of supporting section pane edge and sealing shell 100 is in close contact and seals, elastic external member 8 are socketed on neck 91, and dock neck 91 with the supporing shell 10 in sealing shell 100 and keep sealing, to make bullet Property 8 sets of external member in neck 91 and be fixedly supported on supporting section 90, ensure that support shell 10 squeezes simultaneously on elastic external member 8 It is not displaced when sliding up and down.The supporing shell 10 is rigidity supporter, internal U-shaped sealing ring 7 and elastic external member 8 The top inner wall of (telescoping tube or spring) is mutually nested, and to improve leakproofness, skirt 6 is nested in U-shaped sealing ring upper end and support The gap of shell upper end；And the inlet diameter of the skirt 6 is greater than the diameter for producing pneumatic module gas outlet, to guarantee that gas is big absolutely Part enters arc extinguishing cylinder；U-shaped sealing ring material can be rubber, silica gel or other new materials, need high temperature resistant, ageing-resistant, elastic Greatly.Its act on: under high-temperature injection airflow function, U-shaped sealing ring upwards, downwards simultaneously bulging, make skirt and supporing shell 10 Upper end be close to, be close to U-shaped sealing ring lower end with the lower end of supporing shell 10, gap blocked to improve leakproofness；Work as production Pneumatic module 2 is triggered in groove 12 by trigger electrode 14 and generates air blast, condition of the generated air blast in sealing Lower to eject to fumarole 5, the air blast ejected from fumarole 5 is sprayed to supporing shell 10, is made in high-temperature injection air-flow Under, elastic external member 8 is moved down by compression, and when air-flow disappears, turntable 11 turns to next ball of getting angry, bullet along shaft 101 Property external member 8 restore to original position and to realize detent, reform into the upper opening portion 10a fumarole 5 of supporing shell 10 close Envelope state, to reach the operation of arc extinguishing.

In the present invention, in conjunction with shown in Fig. 2 and Fig. 4, the upper end outer wall of the neck 91 is provided with annular clamping Portion 92, the annular clamping portion 92 are vertically protruded outward along the end outer wall of neck 91, and supporting shell is protruded into the annular clamping portion 92 It the under shed portion 10b of body 10 and is in close contact with U-shaped sealing ring 7, the annular clamping portion 92 is protruded under supporing shell 10 and opened After oral area 10b, which is connected in the gap between 10 bottom of the U-shaped sealing ring 7 and supporing shell, makes ring Shape clamping portion 92 is preferably sealed between 10 bottom of U-shaped sealing ring 7 and supporing shell, ensure that annular clamping portion 92 will not be from 10 bottom of supporing shell slides and separates.

In the present invention, in conjunction with shown in Fig. 2 and Fig. 4, the upper end outer wall of the neck 91 is provided with annular clamping Portion 92, the annular clamping portion 92 are vertically protruded outward along the end outer wall of neck 91, and supporting shell is protruded into the annular clamping portion 92 It the under shed portion 10b of body 10 and is in close contact with U-shaped sealing ring 7, the annular clamping portion 92 is protruded under supporing shell 10 and opened After oral area 10b, which is connected on the 7 bottom end inner wall of U-shaped sealing ring, not only makes annular clamping portion 92 more preferable Ground is sealed between 10 bottom of U-shaped sealing ring 7 and supporing shell, and ensure that annular clamping portion 92 will not be from supporing shell 10 It slides and separates, due to being not directly contacted between annular 92 supporing shell of clamping portion, 10 bottom, glue is used as by U-shaped sealing ring 7 Pad, has not only acted as buffer function, and also reduce the CONTACT WITH FRICTION between annular snap socket part 92 and supporing shell 10, improves The service life of air seal component.

In the present invention, in conjunction with shown in Fig. 1, Fig. 2 and Fig. 4, pneumatic module 2 should be produced in the groove 12 on turntable 11 When being triggered one by one and generating air blast, generated air blast is sprayed under sealed conditions to reach the behaviour of arc extinguishing Make, to be sealed and coated on pneumatic module 2 is produced on a rotatable turntable 11, which rotates a lattice and make supporing shell The upper opening portion 10a of 10 upper end with the insertion fumarole 5, is connected to again and forms sealing state；It is described It produces pneumatic module 2 to be triggered in groove 12 when generating air blast, the arc extinguishing cylinder 9 is for sealed interface connection component 1 and is described The energy of sealed interface connection component 1 Relative Vibration up and down, when the elastic force of vibration disappears, sealed interface connection component 1 again with institute It states the sealing connection of fumarole 5 and provides the elastic force of support, the air blast sprayed from fumarole 5 makes supporing shell 10 and arc extinguishing cylinder 9 Top nozzle relatively move and separate under the action of elastic force, when elastic force disappear after, the upper end of the supporing shell 10 it is upper Opening portion 10a carries out communication seals with fumarole 5 again, so that turntable 11 and arc extinguishing cylinder 9 be made to pass through 1 shape of sealed interface connection component At sealing state；Therefore, when production pneumatic module 2 is sealed and coated on a rotatable turntable 3, production pneumatic module 2 is on turntable 11 Groove 30 in when being triggered one by one and generating air blast, generated air blast carries out injection Qiang Yida under sealed conditions To the operation of arc extinguishing.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, can also make several improvements and retouch, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel, it is characterised in that: the sealing joint component includes Sealing shell (100), sealed interface connection component (1), production pneumatic module (2), arc extinguishing cylinder (9) and turntable (11), the sealing connect Mouth connection component (1), production pneumatic module (2) and turntable (11) sealing are set in sealing shell (100), the disk in turntable (11) It is upper and it is peripherally disposed have several equally distributed grooves (12), the bottom centre of each groove (12) is provided with spray Stomata (5), the production pneumatic module (2) are sealed and coated in the groove (12), the upper end of the sealed interface connection component (1) It being connected to fumarole (5) mutually closed butt joint, the top of the arc extinguishing cylinder (9) is penetrated upwards in the bottom of sealing shell (100), And the top that the lower end of sealed interface connection component (1) is socketed in the arc extinguishing cylinder (9) is subjected to elastic connection, connects sealing The upper end of mouth connection component (1), which is contacted with fumarole (5) by elastic tight, to be docked and connected.

2. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 1, it is characterised in that: institute Stating sealed interface connection component (1) includes elastic external member (8) and supporing shell (10), and the elastic external member (8) is socketed in described The upper and lower ends on the top of arc extinguishing cylinder (9), the supporing shell (10) are respectively provided with upper opening portion (10a) and under shed portion (10b), the fumarole (5) of the bottom of the groove (12) and the upper opening portion (10a) of the supporing shell (10) are in sealing contact Connection, the under shed portion (10b) of the supporing shell (10) are connected to the top connection of elastic external member (8), the arc extinguishing cylinder (9) Top the supporing shell (10) is connected by elastic external member (8) support, make upper opening portion (10a) In of supporing shell (10) It is separated under the action of the elastic external member (8) with the fumarole (5) of groove (12) bottom or connection in sealing contact.

3. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 1, it is characterised in that: In It produces pneumatic module (2) periphery and is provided with support frame (3), which is supported and fixed on recessed by support frame (3) sealing In slot (12), through-hole identical with the fumarole (5) size is offered in the bottom of support frame (3).

4. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 3, it is characterised in that: In It is provided on the bottom end inner wall of support frame (3) L-type ring set (4), the production pneumatic module (2) passes through L-type ring set (4) support setting On the bottom end inner wall of support frame (3)；It is vertically arranged between the inner sidewall and L-type ring set (4) of the support frame (3) The lower end of metal tube (13), the metal tube (13) is arranged on the bottom of support frame (3), the metal tube (13) Top inner wall of the upper end close to support frame (3).

5. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 2, it is characterised in that: In U-shaped sealing ring (7) are provided in the supporing shell (10), are arranged with skirt at the upper opening portion (10a) of supporing shell (10) Side (6), the skirt (6) are nested in the sky between the upper end of U-shaped sealing ring (7) and the upper opening portion (10a) of supporing shell (10) In gap, the upper end opening portion of the skirt (6) is connected to the fumarole (5), and supporing shell is protruded on arc extinguishing cylinder (9) top (10) it under shed portion (10b) and is in close contact with U-shaped sealing ring (7), makes the top and supporing shell (10) of arc extinguishing cylinder (9) (10b) is connected under shed portion.

6. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 5, it is characterised in that: institute The top for stating arc extinguishing cylinder (9) has supporting section (90) and neck (91), and the neck (91) is on supporting section (90) and to institute State arc extinguishing cylinder (9) central reduction, the elastic external member (8) is socketed on neck (91), the upper end of the elastic external member (8) with it is described The connection of supporing shell (10) lower end outer wall, the lower end of the elastic external member (8) is connected on supporting section (90), to make to support Shell (10) support is connected on elastic external member (8), and the under shed portion of supporing shell (10) is protruded into the upper end of the neck (91) It (10b) and is in close contact with U-shaped sealing ring (7).

7. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 6, it is characterised in that: In The upper end outer wall of the neck (91) is provided with annular clamping portion (92), and the annular clamping portion (92) is outside the end of neck (91) Wall vertically protrudes outward, it is described annular clamping portion (92) protrude into supporing shell (10) under shed portion (10b) and with U-shaped sealing ring (7) it is in close contact.

8. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 7, it is characterised in that: institute It states after annular clamping portion (92) protrudes into the under shed portion (10b) of supporing shell (10), which is connected to the U In gap between type sealing ring (7) and supporing shell (10) bottom.

9. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel according to claim 8, it is characterised in that: institute It states after annular clamping portion (92) protrudes into the under shed portion (10b) of supporing shell (10), which is connected to the U On the inner wall of type sealing ring (7) bottom end；The length of the neck (91) is between 1.2cm-4cm, which is 2mm ~30mm.

10. a kind of sealing joint component based on lightning protection arc extinguishing airflow channel described according to claim 6 or 7 or 8 or 9, Be characterized in that: the material of the U-shaped sealing ring (7) is rubber or silica gel.