CN111834892A - Sealing method based on lightning-protection arc-extinguishing airflow channel interface - Google Patents
Sealing method based on lightning-protection arc-extinguishing airflow channel interface Download PDFInfo
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- CN111834892A CN111834892A CN201910299958.8A CN201910299958A CN111834892A CN 111834892 A CN111834892 A CN 111834892A CN 201910299958 A CN201910299958 A CN 201910299958A CN 111834892 A CN111834892 A CN 111834892A
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- sealing
- supporting
- arc extinguishing
- connecting assembly
- interface connecting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a sealing method based on a lightning protection arc extinguishing airflow channel interface, wherein the lightning protection arc extinguishing airflow channel interface comprises a sealing interface connecting assembly which is communicated with a rotary table and an arc extinguishing cylinder, the arc extinguishing cylinder and the rotary table are sealed under the supporting pressure of the sealing interface connecting assembly, and the sealing method comprises the following steps: a gas generating assembly is arranged in the turntable, so that the gas generating assembly can generate strong gas flow acting force under the triggering condition; strong airflow acts on the sealing interface connecting assembly, and under the radial constraint condition of the sealing interface connecting assembly on the strong airflow, most of the strong airflow enters the arc extinguishing cylinder through the sealing interface connecting assembly; and judging whether the acting force of the strong air flow is greater than the supporting pressure of the sealing interface connecting assembly according to the radial constraint condition of the sealing interface connecting assembly on the strong air flow. The sealing method of the invention can enable most of strong airflow to enter the arc extinction from the sealing interface connecting assembly, and can ensure that the generated strong airflow acts on the electric arc in a maximized manner.
Description
Technical Field
The invention belongs to the technical field of lightning protection and arc extinction, and particularly relates to a sealing method based on a lightning protection and arc extinction airflow channel interface.
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: the thunder and lightning induction type solid-phase arc extinguishing lightning protection device is characterized in that when an arc extinguishing gas pill is positioned at a triggering position, a triggering electrode is clamped by a positioning rod, when the arc extinguishing gas pill is triggered, the arc extinguishing gas pill generates strong airflow to bend the triggering electrode towards a groove, the end part of the triggering electrode retracts into an arc extinguishing turntable, the arc extinguishing turntable rotates under the action of a plane scroll spring until a next gas generation component enters the triggering position, the triggering electrode matched with the next gas generation component is clamped by the positioning rod, the guiding type solid-phase arc extinguishing lightning protection device has strong arc extinguishing capability, works stably and reliably, and is quick and convenient to replace the arc extinguishing gas pill, but the jet airflow can generate leakage at the joint of the arc extinguishing turntable and an arc extinguishing cylinder, the condition that the action of the unfocused airflow on the arc is insufficient is considered, so that the arc extinguishing capability and the lightning protection effect of the arc extinguishing lightning protection device are caused, therefore, the, therefore, a sealing method based on the lightning protection arc extinguishing airflow channel interface is provided.
Disclosure of Invention
The invention aims to provide a sealing method based on a lightning-protection arc-extinguishing airflow channel interface, which can enable most of strong airflow to enter into arc extinguishing from a sealing interface connecting assembly under the radial constraint condition of the strong airflow, well prevent the strong airflow from leaking and ensure that the generated strong airflow can act on an electric arc to the maximum. In order to achieve the above object, the present invention adopts the following technical effects:
according to one aspect of the invention, a sealing method based on a lightning protection arc extinguishing airflow channel interface is provided, the lightning protection arc extinguishing airflow channel interface comprises a sealing interface connecting assembly which is communicated with a rotary disc and an arc extinguishing cylinder, the arc extinguishing cylinder and the rotary disc are sealed under the supporting pressure of the sealing interface connecting assembly, and the sealing method comprises the following steps:
step 1: a gas generating assembly is arranged in the turntable, so that the gas generating assembly can generate strong gas flow acting force under the triggering condition; the gas generating assembly arranged in the turntable comprises the following steps:
step 2: strong airflow acts on the sealing interface connecting assembly, and under the radial constraint condition of the sealing interface connecting assembly on the strong airflow, most of the strong airflow enters the arc extinguishing cylinder through the sealing interface connecting assembly;
and step 3: and (3) judging whether the acting force of the strong air flow is greater than the supporting pressure of the sealing interface connecting assembly or not according to the radial constraint condition of the sealing interface connecting assembly on the strong air flow, if the acting force of the strong air flow is less than the supporting pressure of the sealing interface connecting assembly, restoring the supporting pressure of the sealing interface connecting assembly to the original position, and if the acting force of the strong air flow is greater than the supporting pressure of the sealing interface connecting assembly, repeating the step (2) until the supporting pressure of the sealing interface connecting assembly is restored to the original position.
Further preferably in the above scheme, in step 2, applying a strong air flow to the seal interfacing assembly comprises the steps of:
step 20: the top of the arc extinguishing cylinder is provided with a supporting section, the supporting section is fixedly connected with a rigid neck, and the outer wall of the top end of the neck is provided with an annular clamping part which protrudes outwards vertically;
step 21: an elastic sleeve is sleeved on the outer wall of the neck part between the annular clamping part and the supporting section, and the diameter of the neck part is the same as the inner diameter of the arc extinguishing cylinder;
step 22: a rigid supporting shell is arranged above the elastic sleeve, a lower opening part of the supporting shell is fixedly connected with the top of the elastic sleeve, and the annular clamping part is sleeved in the supporting shell;
step 23: at least one skirt is arranged below the gas injection holes, the diameter of the inlet of the skirt is larger than that of the gas injection holes so as to prevent gas flow from leaking, and the outlet of the skirt is nested in the upper opening part of the support shell.
Step 24: set up a U type sealing washer between the upper and lower opening portion of support housing, this U type sealing washer is used for blockking up the gap of support housing and shirt rim junction and the gap of support housing and annular joint portion junction to under the radial constraint condition of strong air current, make most strong air current enter the arc extinguishing section of thick bamboo from sealed interface coupling assembling.
The above scheme is further preferable, the gas generation assembly can generate strong gas flow acting force under the triggering condition, the acting force of the high-temperature strong gas flow ejected from the gas ejecting hole is the acting force of the high-temperature strong gas flow ejected from the gas ejecting hole when the gas generation assembly is triggered to generate the high-temperature strong gas flow, and the gas generation assembly is triggered to generate the high-temperature strong gas flow in the sealed groove.
In a further preferred embodiment of the above scheme, the sealing method further includes sealing the turntable and the sealing interface connection assembly in the same cavity, and enabling the top end of the arc extinguishing cylinder to be in butt-joint sealing communication with the air injection hole at the bottom of the groove through the supporting frame.
Above-mentioned scheme is further preferred, sealed interface connection subassembly is including the elasticity external member that is used for providing axial bearing pressure and the support casing that is used for providing high temperature airflow channel, the elasticity external member cup joints the top of a section of thick bamboo that quenches, the upper and lower both ends of supporting the casing have upper shed and under shed portion respectively, the fumarole of the bottom of recess with the sealed contact intercommunication of the upper shed portion of supporting the casing, the under shed portion of supporting the casing is connected on the top of elasticity external member, the top of a section of thick bamboo that quenches is passed through the elasticity external member and is supported the connection support casing makes the upper shed portion of supporting the casing be in the fumarole of elasticity external member bottom separates or sealed contact intercommunication.
According to the scheme, the U-shaped sealing ring is arranged in the supporting shell, the skirt is sleeved at the upper opening part of the supporting shell and is nested in a gap between the upper end of the U-shaped sealing ring and the upper opening part of the supporting shell, the upper end opening part of the skirt is communicated with the air injection hole, the top end of the arc extinguishing cylinder extends into the lower opening part of the supporting shell and is in close contact with the U-shaped sealing ring, and the top end of the arc extinguishing cylinder is communicated with the lower opening part of the supporting shell.
Preferably, the top end of the arc extinguishing cylinder is provided with a supporting section, a neck and an annular clamping portion, the neck is arranged on the supporting section and shrinks towards the center of the arc extinguishing cylinder, the elastic sleeve is sleeved on the neck, the upper end of the elastic sleeve is connected with the outer wall of the lower end of the supporting shell, the lower end of the elastic sleeve is connected on the supporting section, so that the supporting shell is supported and connected on the elastic sleeve, and the upper end of the neck extends into the lower opening portion of the supporting shell and is in close contact with the U-shaped sealing ring; annular joint portion sets up the outside perpendicular protrusion of top outer wall along the top outer wall of neck, annular joint portion stretches into the under shed portion that supports the casing and with U type sealing washer in close contact with.
According to the scheme, the annular clamping portion is clamped in a gap between the U-shaped sealing ring and the bottom of the supporting shell after extending into the lower opening portion of the supporting shell.
According to the scheme, the annular clamping portion is clamped on the inner wall of the bottom end of the U-shaped sealing ring after extending into the lower opening portion of the supporting shell.
The above solution is further preferred, the diameter of the groove is not more than 20mm, and the depth of the groove is 40-50 mm.
In summary, due to the adoption of the technical scheme, the invention has the following technical effects:
(1) the sealing method can enable most of strong airflow to enter the arc extinguishing from the sealing interface connecting assembly under the radial constraint condition of the strong airflow, the sealing assembly is simple in structure, the strong airflow is well prevented from leaking, and the generated strong airflow can be guaranteed to act on the 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 the gas generation assembly generates strong airflow in the turntable, the sealing interface connecting assembly at the top of the arc extinguishing cylinder can move up and down (vibrate) under the action of elasticity to carry out sealing contact, and ensure that left and right deviation can not occur, thus improving the reliability of lightning protection and arc extinguishing, and simultaneously improving the safety of arc extinguishing and lightning protection by the sealing assembly structure.
Drawings
FIG. 1 is a flow chart of a sealing method based on a lightning protection arc extinguishing airflow channel interface of the invention
FIG. 2 is a schematic diagram of a lightning protection arc quenching airflow channel based interface seal assembly of the present invention;
FIG. 3 is a schematic view of the connection between the turntable, the seal interface connection assembly and the arc chute of the present invention;
FIG. 4 is a schematic structural view of a U-shaped seal ring of the present invention;
fig. 5 is a schematic view of the connection between the support housing and the arc chute of the present invention;
in the drawing, a sealing interface connecting assembly 1, a gas generating assembly 2, a supporting frame 3, an L-shaped ring sleeve 4, a gas injection hole 5, a skirt edge 6, a U-shaped sealing ring 7, an elastic sleeve 8, an arc extinguishing cylinder 9, a supporting shell 10, a rotary disc 11, a groove 12, a metal pipe 13, a trigger electrode 14, an upper opening portion 10a, a lower opening portion 10b, a U-shaped groove 70, a supporting section 90, a neck portion 91, an annular clamping portion 92, a sealing shell 100 and a rotating shaft 101
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 a sealing method based on a lightning protection arc extinguishing airflow channel interface, the lightning protection arc extinguishing airflow channel interface includes a sealing interface connection assembly 1 communicating with a turntable 11 and an arc extinguishing cylinder 9, the arc extinguishing cylinder 9 is sealed with the turntable 11 under a supporting pressure of the sealing interface connection assembly 1, and the sealing method includes the following steps:
step 1: the rotary table 11 is internally provided with a gas production assembly 2, so that the gas production assembly 2 can generate acting force of strong gas flow under a trigger condition, the gas production assembly 2 can generate strong gas flow under the trigger condition, when the gas production assembly 2 is triggered to generate high-temperature gas flow, the acting force of the high-temperature strong gas flow ejected from the gas ejecting hole 5 is generated, and the triggering of the gas production assembly 2 to generate the high-temperature gas flow is performed in the sealed groove 12; the gas production assembly 2 arranged in the turntable comprises the following steps:
step 10: sealing the rotary table, and arranging a plurality of uniformly distributed grooves 12 on the surface of the rotary table 11 along the circumferential direction, so that the depth of each groove 12 is more than or equal to twice the width; the diameter of the groove 12 is not more than 20mm, and the depth of the groove 12 is 40-50 mm;
step 11: the bottom of each groove 12 is provided with a gas orifice 5 for jetting gas flow; the lower end of the sealing interface connecting assembly 1 is connected with the top end of the arc extinguishing cylinder 9 through upward axial supporting pressure, and the upper end of the sealing interface connecting assembly 1 is extruded with at least one air jet hole 5 at the bottom of one groove 12 through the axial supporting pressure, so that the upper end of the sealing interface connecting assembly 1 is in sealing contact communication with the air jet hole 5 at the bottom of the groove 12;
step 12: an L-shaped ring sleeve 4, a metal pipe fitting 13 and a supporting frame body 3 are sequentially sleeved outside the gas production assembly 2, and the gas production assembly 2 is sequentially wrapped from inside to outside; the wrapping effect of the components restrains strong airflow, so that the generated strong airflow is more concentrated, the airflow is prevented from leaking to the periphery, and the strong airflow is used as a high-temperature airflow channel communicated with the sealing interface connecting component 1 below the groove 12;
step 2: strong airflow acts on the sealing interface connecting assembly 1, and under the radial constraint condition of the sealing interface connecting assembly 1 on the strong airflow, most of the airflow enters the arc extinguishing cylinder 9 through the sealing interface connecting assembly 1; applying a strong airflow to the seal interfacing assembly 1 comprises the steps of:
step 20: a supporting section 90 is arranged at the top of the arc extinguishing cylinder 9, a rigid neck 91 is fixedly connected to the supporting section 90, and an annular clamping part 92 which protrudes outwards vertically is arranged on the outer wall of the top end of the neck 91;
step 21: the outer wall of the neck part 91 between the annular clamping part 92 and the supporting section 90 is sleeved with the elastic sleeve 8, and the diameter of the neck part 91 is the same as the inner diameter of the arc extinguishing cylinder 9;
step 22: a rigid supporting shell 10 is arranged above the elastic sleeve 8, the lower opening part of the supporting shell 10 is fixedly connected with the top of the elastic sleeve 8, and the annular clamping part 92 is sleeved in the supporting shell 10;
step 23: at least one skirt 6 is arranged below the gas injection holes 5, the diameter of the inlet of the skirt 5 is larger than that of the gas injection holes 5 so as to prevent gas flow from leaking, and the outlet of the skirt 5 is nested in the upper opening part of the support shell 10.
Step 24: a U-shaped sealing ring 7 is arranged between the upper opening part and the lower opening part of the supporting shell 10, and the U-shaped sealing ring 7 is used for blocking a gap at the joint of the supporting shell 10 and the skirt edge 5 and a gap at the joint of the supporting shell 10 and the annular clamping part 92, so that most of strong airflow enters the arc extinguishing cylinder 9 from the sealing interface connecting assembly 1 under the radial constraint condition of the strong airflow;
and step 3: according to the radial constraint condition of the sealing interface connecting assembly 1 to the strong airflow, when the high-temperature strong airflow passes through the sealing interface connecting assembly 1, the U-shaped sealing ring 7 is expanded by high-temperature strong air flow and then is tightly attached to the inner wall of the rigid supporting body 10, the rigid supporting body 10 (supporting shell) is extruded after the U-shaped sealing ring 7 is expanded, the rigid support body 10 thus has a wrapping effect on the strong air flow at the interface, the support body 10 thus generating a radial constraint on the strong air flow, which, at this point, judging whether the acting force of the strong air flow is larger than the supporting pressure of the sealing interface connecting assembly 1 or not, if the acting force of the strong air flow is smaller than the supporting pressure of the sealing interface connecting assembly 1, the supporting pressure of the seal interface connecting assembly 1 is restored to the original position, if the acting force of the strong air flow is larger than the supporting pressure of the seal interface connecting assembly 1, step 2 is repeated until the support pressure of the seal interface connection assembly 1 is restored to its original position.
In the invention, as shown in a combined figure 2 and a figure 3, a gas production assembly 2 is nested and sealed in each groove 12 on the rotary table 11, and a through hole communicated with the gas injection hole 5 is reserved on the outer wall of the gas production assembly 2; when the gas generating assembly 2 is triggered to generate high-temperature gas flow, the gas generating assembly 2 sprays high-temperature strong gas flow into the sealing interface connecting assembly 1, so that the sprayed high-temperature gas flow generates enough gas flow pressure under the action of the high-temperature strong gas flow, and the action of the strong gas flow is applied to the sealing interface connecting assembly 1 through the gas generating assembly 2; when the acting force of strong airflow is greater than the axial supporting pressure, the upper end of the sealing interface connecting assembly 1 (the upper end of the supporting shell 10) is separated from the air injection hole 5 at the bottom of the groove 12, after the airflow pressure disappears, the airflow pressure is less than the axial supporting pressure, and under the action of the axial supporting pressure, the upper end of the sealing interface connecting assembly 1 is in sealing communication with the next groove 12 on the turntable 11; under the action of axial supporting pressure, the upper end of the sealing interface connecting assembly 1 is in sealing communication with the next groove 12 on the rotary table 11; thus completing the sealing at the interface of the lightning-proof arc extinguishing airflow channel.
In the invention, as shown in fig. 2 and fig. 3, in a specific implementation, the sealing interface connection assembly 1, the gas generation assembly 2 and the turntable 11 are hermetically sleeved in the sealing housing 100, a plurality of uniformly distributed grooves 12, preferably 18 to 24 grooves, are arranged on the surface of the turntable 11 and along the circumferential direction, a gas orifice 5 is arranged at the center of the bottom of each groove 12, the gas generation assembly 2 is hermetically covered in the groove 12, the upper end of the sealing interface connection assembly 1 is in close butt joint communication with the gas orifice 5, the top end of the arc extinguishing cylinder 9 penetrates upwards into the bottom of the sealing housing 100, and the lower end of the sealing interface connection assembly 1 is sleeved at the top end of the arc extinguishing cylinder 9 for elastic connection, so that the upper end of the sealing interface connection assembly 1 is in butt joint communication with the gas orifice 5 through elastic close contact; the periphery of the gas production assembly 2 is provided with a supporting frame body 3, the gas production assembly 2 is supported and fixed in a groove 12 in a sealing mode through the supporting frame body 3, the bottom of the supporting frame body 3 is provided with a through hole with the same size as the gas injection hole 5, an L-shaped ring sleeve 4 is arranged on the inner wall of the bottom end of the gas production assembly 2, the gas production assembly 2 is supported and arranged on the inner wall of the bottom end of the supporting frame body 3 through the L-shaped ring sleeve 4, a metal pipe fitting 13 is vertically arranged between the inner side wall of the supporting frame body 3 and the L-shaped ring sleeve 4, the lower end of the metal pipe fitting 13 is arranged on the bottom of the supporting frame body 3, the metal pipe fitting 13 is a metal pipe such as an aluminum pipe, an iron pipe or. The gas generating component 2 is a gas ball, the trigger electrode 14 is led out to the supporting frame body 3 from the gas generating component 2, the supporting frame body 3 is wrapped outside the gas ball, when the gas ball is released, due to the action of high-temperature strong gas flow, the L-shaped ring sleeve 4 on the inner wall of the bottom of the supporting frame body 3 can be outwards expanded to be tightly attached to the metal pipe fitting 13, and the metal pipe fitting 13 is extruded with the inner side wall of the supporting frame body 3, so that the sealing performance of the gas generating component 2 in the groove 12 is enhanced, most of high-temperature strong gas flow enters the arc extinguishing barrel 9 below through the gas jet hole 5 and the sealing interface connecting component 1 to be released, and the purpose of arc extinguishing operation is achieved.
In the present invention, as shown in fig. 2 and 3, the seal interface connection assembly 1 includes an elastic sleeve 8 for providing an axial support pressure and a support housing 10 for providing a high-temperature airflow channel, the turntable 11 and the seal interface connection assembly 1 are sealed in the same cavity, and the top end of the arc extinguishing cylinder 9 is in butt-joint sealing communication with the air injection hole 5 at the bottom of the groove 12 through the support frame 3, so that the seal interface connection assembly 1 performs effective sealing in a communication state of the support housing 10, the elastic sleeve 8 is a telescopic tube or a spring, the arc extinguishing cylinder 9 is a cylindrical cylinder, the interior of the arc extinguishing cylinder is hollow, and the upper part of the arc extinguishing cylinder 9 is connected with the telescopic tube; the elastic sleeve member 8 is sleeved at the top end of the arc extinguishing cylinder 9, the upper end and the lower end of the support shell 10 are respectively provided with an upper opening portion 10a and a lower opening portion 10b, the fumarole 5 at the bottom of the groove 12 is communicated with the upper opening portion 10a of the support shell 10 in a sealing contact manner, the lower opening portion 10b of the support shell 10 is connected with the top end of the elastic sleeve member 8, the top end of the arc extinguishing cylinder 9 is connected with the support shell 10 through the support of the elastic sleeve member 8, the upper opening portion 10a of the support shell 10 is separated from or communicated with the fumarole 5 at the bottom of the groove 12 in a sealing contact manner under the action of the elastic sleeve member 8, a U-shaped sealing ring 7 is arranged in the support shell 10, as shown in fig. 4, the center of the U-shaped sealing ring 7 is a U-shaped groove 70, a skirt edge 6 is sleeved at the upper opening portion 10a of the support shell 10, and the skirt edge 6 is nested in, the upper end opening part of the skirt edge 6 is communicated with the air injection hole 5, and the top end of the arc extinguishing cylinder 9 extends into the lower opening part 10b of the support shell 10 and is in close contact with the U-shaped sealing ring 7, so that the top end of the arc extinguishing cylinder 9 is communicated with the lower opening part 10b of the support shell 10. In the invention, the gas pill in the gas generating assembly 2 is wrapped by the supporting frame 3 from four sides, so that the leakage of high-temperature strong gas flow from a gap is avoided, when the gas generating assembly 2 is triggered to generate a large amount of high-strength gas, the gap between the gas generating assembly 2 and the supporting frame 3 is blocked, so that most of the gas flow enters the arc extinguishing cylinder 9 from the sealing interface connecting assembly 1, the sealing interface connecting assembly 1 is compressed under the action of the gas flow, the gas flow can recover after disappearing, the large amount of high-strength gas is generated until the time between the disappearance of the gas flow, the elasticity of the sealing interface connecting assembly 1 disappears, the action specified by the installation of the rotary disc 11 rotates for one grid, and the gas generating assembly 2 in each groove 12 can be clamped in sequence. When the gas production assembly 2 is triggered, the rotating disc 11 rotates in a specific manner according to application No. 201610747255.3, which has the patent name: thunder and lightning induction type solid phase arc extinguishing lightning protection device, adopt the technical scheme of this patent rotation screens, not only guaranteed reliable rotation and reliable customization guarantee can reliably drag the position again after triggering, prevent the carousel mistake and turn, consequently, gas production subassembly 2 on carousel 11 is triggered the back, during the gas flow of eruption can, carousel 11 can not produce through sealed interface coupling assembling 1 and arc extinguishing cylinder 9 junction and reveal, it can the maximize effect on the arc extinguishing cylinder to spray the gas flow, also make gas production subassembly 2 and rigid support casing 10 seal under the effect of elasticity external member 8 and U type sealing washer 7 respectively.
In the present invention, as shown in fig. 2 and 5, the top end of the arc extinguishing cylinder 9 has a supporting section 90, a neck 91 and an annular clamping portion 92, the neck 9 is on the supporting section 90 and shrinks toward the center of the arc extinguishing cylinder 9, the elastic sleeve 8 is sleeved on the neck 91, the upper end of the elastic sleeve 8 is connected with the outer wall of the lower end of the supporting shell 10, the lower end of the elastic sleeve 8 is connected to the supporting section 90, so that the supporting shell 10 is supported and connected on the elastic sleeve 8, and the neck 91 is butted and sealed with the supporting shell 10 in the sealed housing 100, so that the elastic sleeve 8 is sleeved on the neck 91 and stably supported on the supporting section 90, and the supporting shell 10 is guaranteed not to shift when being pressed on the elastic sleeve 8 and sliding up and down. The support shell 10 is a rigid support body, the U-shaped sealing ring 7 in the support shell and the inner wall of the top end of the elastic sleeve 8 (a telescopic pipe or a spring) are nested with each other to improve the sealing performance, and the upper end of the neck 91 extends into the lower opening 10b of the support shell 10 and is tightly contacted and sealed with the U-shaped sealing ring 7; annular joint portion 92 sets up the outside perpendicular protrusion of top outer wall along neck 91 of the top outer wall of neck 91, annular joint portion 92 stretches into the lower opening portion 10b of supporting shell 10 and with U type sealing washer 7 in close contact with. The length of the neck part 91 is 1.2cm-4cm, so that when the elastic sleeve member 8 is compressed under the action of high-temperature strong airflow, the elastic sleeve member 8 has enough compression distance on the neck part 91, the support shell 10 and the air injection hole 5 can have enough separation time, so that the rotary table can enter the next sealing contact again when rotating, and the diameter of the neck part 91 is 2 mm-20 mm, so that the flow and pressure of the high-temperature strong airflow during ejection are ensured, and the high-temperature strong airflow has enough impact force to act on the support shell 10 and compress the elastic sleeve member 8; in the invention, the skirt edge 6 is nested in a gap between the upper end of the U-shaped sealing ring and the upper end of the supporting shell; the diameter of the inlet of the skirt edge 6 is larger than that of the gas outlet of the gas generating assembly 2, so that most of gas enters the arc extinguishing cylinder; the U-shaped sealing ring can be made of rubber, silica gel or other new materials, and needs high temperature resistance, aging resistance and high elasticity. The function is as follows: under the action of high-temperature jet air flow, the U-shaped sealing ring expands upwards and downwards simultaneously, so that the skirt edge is tightly attached to the upper end of the supporting shell 10, the lower end of the U-shaped sealing ring is tightly attached to the lower end of the supporting shell 10, and the gap is blocked to improve the sealing property; when the gas generating assembly 2 is triggered in the groove 12 through the trigger electrode 14 to generate strong gas flow, the generated strong gas flow is ejected to the gas ejecting hole 5 under a sealed condition, the strong gas flow ejected from the gas ejecting hole 5 is ejected into the supporting shell 10, the elastic sleeve 8 is compressed to move downwards under the action of high-temperature ejected gas flow, when the gas flow disappears, the rotating disc 11 rotates to the next gas emitting pill along the rotating shaft 101, the elastic sleeve 8 recovers to the original position and realizes clamping, and the gas ejecting hole 5 at the upper opening part 10a of the supporting shell 10 is restored to a sealed state again to achieve arc extinguishing operation.
In the present invention, as shown in fig. 2, 3 and 5, after the annular clamping portion 92 extends into the lower opening portion 10b of the supporting housing 10, the annular clamping portion 92 is clamped in the gap between the U-shaped sealing ring 7 and the bottom of the supporting housing 10, so that the annular clamping portion 92 is better sealed between the U-shaped sealing ring 7 and the bottom of the supporting housing 10, and the annular clamping portion 92 is ensured not to slip off from the bottom of the supporting housing 10 and separate.
In the present invention, as shown in fig. 2, 3 and 5, after the annular clamping portion 92 extends into the lower opening portion 10b of the supporting housing 10, the annular clamping portion 92 is clamped on the inner wall of the bottom end of the U-shaped sealing ring 7, so that the annular clamping portion 92 is better sealed between the U-shaped sealing ring 7 and the bottom of the supporting housing 10, and the annular clamping portion 92 is ensured not to slip off and separate from the supporting housing 10, because the annular clamping portion 92 does not directly contact the bottom of the supporting housing 10, the U-shaped sealing ring 7 serves as a rubber pad, which not only plays a role of buffering, but also reduces the frictional contact between the annular clamping portion 92 and the supporting housing 10, and prolongs the service life of the airflow sealing assembly.
In the present invention, as shown in fig. 1, fig. 2 and fig. 5, when the gas generating assembly 2 is triggered one by one in the groove 12 of the turntable 11 to generate a strong gas flow, the generated strong gas flow is sprayed under a sealed condition to achieve an arc extinguishing operation, so that the gas generating assembly 2 is hermetically covered on a rotatable turntable 11, and the turntable 11 rotates one grid and enables the upper opening portion 10a at the upper end of the supporting housing 10 to be inserted into the gas ejecting hole 5 again to communicate and form a sealed state; when the gas generating assembly 2 is triggered in the groove 12 to generate strong gas flow, the arc extinguishing cylinder 9 is used for sealing the interface connecting assembly 1 and can vibrate up and down relatively for the sealing interface connecting assembly 1, when the vibrating elastic force disappears, the sealing interface connecting assembly 1 is communicated with the gas jet hole 5 in a sealing way again to provide supporting elastic force, the strong gas flow sprayed from the gas jet hole 5 enables the supporting shell 10 and the top cylinder opening of the arc extinguishing cylinder 9 to move relatively under the action of the elastic force and separate, and after the elastic force disappears, the upper opening part 10a at the upper end of the supporting shell 10 is communicated and sealed with the gas jet hole 5, so that the turntable 11 and the arc extinguishing cylinder 9 form a sealing state through the sealing interface connecting assembly 1; therefore, when the gas generating assembly 2 is hermetically covered on a rotatable turntable 3 and the gas generating assembly 2 is triggered one by one in the groove 30 on the turntable 11 to generate strong gas flow, the generated strong gas flow is strongly jetted under a sealed condition to achieve the arc extinguishing operation.
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 (10)
1. A sealing method based on a lightning protection arc extinguishing airflow channel interface is characterized in that: the lightning protection arc extinguishing airflow channel interface comprises a sealing interface connecting assembly (1) communicated with a rotary disc (11) and an arc extinguishing cylinder (9), the arc extinguishing cylinder (9) and the rotary disc (11) are sealed under the supporting pressure of the sealing interface connecting assembly (1), and the sealing method comprises the following steps:
step 1: a gas generating component (2) is arranged in the turntable (11), so that the gas generating component (2) can generate strong gas flow acting force under the triggering condition; the gas production assembly (2) arranged in the turntable comprises the following steps:
step 10, sealing the turntable, and arranging a plurality of uniformly distributed grooves (12) on the surface of the turntable (11) along the circumferential direction to ensure that the depth of each groove (12) is more than or equal to twice the width;
11, arranging air injection holes (5) for injecting air flow at the bottom of each groove (12); the lower end of the sealing interface connecting assembly (1) is connected with the top end of the arc extinguishing cylinder (9) through upward axial supporting pressure, the upper end of the sealing interface connecting assembly (1) is extruded with at least one air injection hole (5) at the bottom of the groove (12) through the axial supporting pressure, and the upper end of the sealing interface connecting assembly (1) is enabled to be in sealing contact communication with the air injection hole (5) at the bottom of the groove (12);
step 12, sleeving an L-shaped ring sleeve (4), a metal pipe fitting (13) and a supporting frame body (3) outside the gas generating assembly (2) in sequence, and sequentially wrapping the gas generating assembly (2) from inside to outside;
step 2: strong airflow acts on the sealing interface connecting assembly (1), and under the radial constraint condition of the sealing interface connecting assembly (1) on the strong airflow, most of the strong airflow enters the arc extinguishing cylinder (9) through the sealing interface connecting assembly (1);
and step 3: according to the radial constraint condition of the sealing interface connecting assembly (1) on the strong airflow, whether the acting force of the strong airflow is larger than the supporting pressure of the sealing interface connecting assembly (1) or not is judged, if the acting force of the strong airflow is smaller than the supporting pressure of the sealing interface connecting assembly (1), the supporting pressure of the sealing interface connecting assembly (1) is recovered to the original position, and if the acting force of the strong airflow is larger than the supporting pressure of the sealing interface connecting assembly (1), the step 2 is repeated until the supporting pressure of the sealing interface connecting assembly (1) is recovered to the original position.
2. The sealing method based on the lightning protection arc extinguishing airflow channel interface according to claim 1, characterized in that: in step 2, applying a strong airflow to the seal interfacing assembly (1) comprises the steps of:
step 20: a supporting section (90) is arranged at the top of the arc extinguishing cylinder (9), a rigid neck (91) is fixedly connected to the supporting section (90), and an annular clamping part (92) which protrudes outwards and is vertically arranged on the outer wall of the top end of the neck (91);
step 21: an elastic sleeve (8) is sleeved on the outer wall of the neck part (91) between the annular clamping part (92) and the supporting section (90), and the diameter of the neck part (91) is the same as the inner diameter of the arc extinguishing cylinder (9);
step 22: a rigid supporting shell (10) is arranged above the elastic sleeve (8), the lower opening part of the supporting shell (10) is fixedly connected with the top of the elastic sleeve (8), and then the annular clamping part (92) is sleeved in the supporting shell (10);
step 23: at least one skirt (6) is arranged below the gas injection holes (5), the diameter of the inlet of the skirt (5) is larger than that of the gas injection holes (5) so as to prevent gas flow from leaking, and the outlet of the skirt (5) is nested in the upper opening part of the support shell (10).
Step 24: a U-shaped sealing ring (7) is arranged between an upper opening part and a lower opening part of a supporting shell (10), and the U-shaped sealing ring (7) is used for blocking a gap at the joint of the supporting shell (10) and a skirt edge (5) and a gap at the joint of the supporting shell (10) and an annular clamping part (92), so that most of strong air flow enters an arc extinguishing cylinder (9) from a sealing interface connecting assembly (1) under the radial constraint condition of the strong air flow.
3. The sealing method based on the lightning protection arc extinguishing airflow channel interface according to claim 1, characterized in that: the gas production assembly (2) can generate strong airflow acting force under the triggering condition, namely the acting force of high-temperature strong airflow ejected from the gas ejecting hole (5) is generated when the gas production assembly (2) is triggered to generate high-temperature strong airflow, and the generation of the high-temperature strong airflow by triggering the gas production assembly (2) is performed in the sealed groove (12).
4. The sealing method based on the lightning protection arc extinguishing airflow channel interface according to claim 1, characterized in that: the arc extinguishing chamber is characterized in that the rotary disc (11) and the sealing interface connecting assembly (1) are sealed in the same cavity, and the top end of the arc extinguishing chamber (9) is in butt joint and sealing communication with the air injection holes (5) at the bottom of the groove (12) through the supporting frame body (3).
5. The sealing method based on the lightning protection arc extinguishing airflow channel interface according to the claim 1, the 2 or the 4 is characterized in that: the seal interface connection assembly (1) comprises an elastic sleeve (8) for providing axial support pressure and a support shell (10) for providing a high-temperature airflow channel, the elastic sleeve (8) is sleeved at the top end of the arc extinguishing cylinder (9), the upper end and the lower end of the supporting shell (10) are respectively provided with an upper opening part (10a) and a lower opening part (10b), the air injection hole (5) at the bottom of the groove (12) is in sealed contact communication with the upper opening part (10a) of the support shell (10), the lower opening part (10b) of the supporting shell (10) is connected with the top end of the elastic sleeve (8), the top end of the arc extinguishing cylinder (9) is supported and connected with the supporting shell (10) through an elastic sleeve (8), so that an upper opening part (10a) of the supporting shell (10) is separated from or communicated with the air injection hole (5) at the bottom of the groove (12) in a sealing contact mode under the action of the elastic sleeve (8).
6. The method of claim 5, wherein the sealing method is based on a lightning protection arc quenching airflow channel interface, and is characterized in that: be provided with U type sealing washer (7) in supporting casing (10), the cover is equipped with shirt rim (6) in upper opening portion (10a) department of supporting casing (10), and this shirt rim (6) nestification is in the space between upper end of U type sealing washer (7) and upper opening portion (10a) of supporting casing (10), the upper end opening portion of shirt rim (6) with fumarole (5) intercommunication, arc extinguishing barrel (9) top stretch into supporting casing's (10) under shed portion (10b) and with U type sealing washer (7) in close contact with, make the top of arc extinguishing barrel (9) communicate with under shed portion (10b) of supporting casing (10).
7. The method of claim 6, wherein the sealing method is based on a lightning protection arc quenching airflow channel interface, and is characterized in that: the top end of the arc extinguishing cylinder (9) is provided with a supporting section (90), a neck part (91) and an annular clamping part (92), the neck part (91) is arranged on the supporting section (90) and shrinks towards the center of the arc extinguishing cylinder (9), the elastic sleeve part (8) is sleeved on the neck part (91), the upper end of the elastic sleeve part (8) is connected with the outer wall of the lower end of the supporting shell (10), the lower end of the elastic sleeve part (8) is connected on the supporting section (90), so that the supporting shell (10) is supported and connected on the elastic sleeve part (8), and the upper end of the neck part (91) extends into the lower opening part (10b) of the supporting shell (10) and is in close contact with the U-shaped sealing ring (7); annular joint portion (92) set up the outside perpendicular protrusion of top outer wall along neck (91) of the top outer wall of neck (91), annular joint portion (92) stretch into lower opening portion (10b) of supporting casing (10) and with U type sealing washer (7) in close contact with.
8. The method of claim 7, wherein the sealing method is based on a lightning protection arc quenching airflow channel interface, and is characterized in that: after the annular clamping portion (92) extends into the lower opening portion (10b) of the supporting shell (10), the annular clamping portion (92) is clamped in a gap between the U-shaped sealing ring (7) and the bottom of the supporting shell (10).
9. The method of claim 8, wherein the sealing is based on a lightning protection arc quenching airflow channel interface, and the method comprises the following steps: after the annular clamping portion (92) extends into the lower opening portion (10b) of the supporting shell (10), the annular clamping portion (92) is clamped on the inner wall of the bottom end of the U-shaped sealing ring (7).
10. The sealing method based on the lightning protection arc extinguishing airflow channel interface according to claim 1, characterized in that: the diameter of the groove (12) is not more than 20mm, and the depth of the groove (12) is 40-50 mm.
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| CN201910299958.8A CN111834892B (en) | 2019-04-15 | 2019-04-15 | Sealing method based on lightning protection and arc extinguishing airflow channel interface |
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| CN201910299958.8A CN111834892B (en) | 2019-04-15 | 2019-04-15 | Sealing method based on lightning protection and arc extinguishing airflow channel interface |
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| CN102737795A (en) * | 2011-04-12 | 2012-10-17 | 王巨丰 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
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| CN203787766U (en) * | 2014-03-26 | 2014-08-20 | 王嬿蕾 | Composite jet stream lightning protection and arc extinguishing gap device |
| CN106451077A (en) * | 2016-08-28 | 2017-02-22 | 王巨丰 | Thunder-lightening induced solid-phase arc-extinguishing lightning arrester |
| CN109360697A (en) * | 2018-11-07 | 2019-02-19 | 南宁超伏电气科技有限公司 | The jet-stream wind arc extinguishing lightning protection device of dual triggering |
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|---|---|---|---|---|
| CN102737795A (en) * | 2011-04-12 | 2012-10-17 | 王巨丰 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
| CN102856021A (en) * | 2012-09-27 | 2013-01-02 | 王巨丰 | Follow current-free arc lightening-protection gap protection device |
| CN203787766U (en) * | 2014-03-26 | 2014-08-20 | 王嬿蕾 | Composite jet stream lightning protection and arc extinguishing gap device |
| CN106451077A (en) * | 2016-08-28 | 2017-02-22 | 王巨丰 | Thunder-lightening induced solid-phase arc-extinguishing lightning arrester |
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| CN111834892B (en) | 2023-08-11 |
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