CN207896663U - A kind of lower electric discharge part with elastic conduction coil - Google Patents
A kind of lower electric discharge part with elastic conduction coil Download PDFInfo
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- CN207896663U CN207896663U CN201721079210.XU CN201721079210U CN207896663U CN 207896663 U CN207896663 U CN 207896663U CN 201721079210 U CN201721079210 U CN 201721079210U CN 207896663 U CN207896663 U CN 207896663U
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- Prior art keywords
- elastic conduction
- electric discharge
- conduction coil
- discharge part
- discharging rod
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Abstract
The utility model discloses a kind of lower electric discharge part with elastic conduction coil, lower electric discharge part include lower discharging rod equipped with lower discharge end, insulation slip pipe, the plug being slidably arranged in insulation slip pipe, for the insulated connecting piece of the lower discharging rod of connection and plug that insulate, the elastic conduction coil for being used to generate electromagnetic force being set on insulation slip pipe, conductive mounting pedestal and for the conductive mounting pillar on cross-arm；The upper end of elastic conduction coil and lower discharging rod are fixedly linked, and the lower end of elastic conduction coil is fixed on conductive mounting pedestal.On the one hand the utility model is generated electromagnetic force using elastic conduction coil and lower electric discharge part is driven to move down, discharging gap is increased；On the other hand reseting elasticity is provided for lower electric discharge part；Help to reduce component, simplifies structure.
Description
Technical field
The utility model belongs to electric power overhead insulated circuit lightning Protection technical field, and in particular to one kind having elastic conducting
The lower electric discharge part of electric coil.
Background technology
Overhead line will produce power frequency continued flow after being struck by lightning, so-called power frequency continued flow is exactly overhead line after overhead line is struck by lightning
Thunder and lightning arc is just generated between metal cross arm, this thunder and lightning arc life span is very short, but it is formd between overhead line and cross-arm
Conductive channel makes the power supply of overhead line occur over the ground（Cross-arm）Short circuit, this short circuit current are known as power frequency continued flow（Be after lightning current it
Power current afterwards）, for power frequency continued flow, cross-arm or grounding of pole resistance are bigger, and power frequency continued flow is smaller, easier cutout.
Aerial insulated wire is compared with aerial bare line, it is easier to line-outage contingency occur.When thundercloud appears in aerial bare line overhead
When, distribution of the charge inducing on bare conductor is uniform, and the neutralization of positive and negative charge is not concentrated on a bit, therefore bare conductor is very
Break less.But when thundercloud floats to above suspended insulated guide wire, charge inducing concentrates on the surface of suspended insulated guide wire, i.e.,
Insulating surface, since insulating layer resistance is big, charge is not easy to flow, when the charge collection on insulating layer is to certain electricity, in thunder
Under the action of cloud, the electric discharge between positive and negative charge causes insulating layer to puncture, and breakdown point is usually near metal cross arm, because relatively
For, the charge inducing of this position is more, such as concurrent, cross-arm can all generate charge inducing, in positive and negative charge and when produce
The insulating layer that raw heat is oriented to overhead insulating punctures.When generating thunder and lightning between suspended insulated guide wire breakdown point and metal cross arm
After arc, short-channel is just formed, then the AC power of aerial condutor becomes afterflow source, and persistence drag arc makes suspended insulated guide wire
Fracture.
Patent document CN201000796Y discloses a kind of lightning protection pillar insulator, is mainly closed by insulating shield, clamp aluminium
The compositions such as gold utensil, composite insulator, starting rod and lower steel feet.Its main feature：（1）When lightning stroke occurs, starting rod and lower steel
Causing umbrella network to discharge between foot, forms short-channel, the power frequency arc of connecting, which is moved between starting rod and lower steel feet, to burn, with
Protect conducting wire from burn.Because starting rod gets around full skirt and is adjusted to optimal discharge gap, discharge effect is more preferable, and prevents from burning out
Insulator umbrella.
But there are still following shortcomings for this kind of lightning protection pillar insulator：Starting rod and the point of discharge of lower steel feet are exposed,
It is easy accumulation dirt, influences discharging action.In addition, the discharging gap between this kind of starting rod and lower steel feet immobilizes, still
Ambient weather is frequently to change, and easily leads to malfunction or discharging action cannot occur.
Utility model content
The utility model provides one kind can be built-in to reduce external environmental interference and be resetted using elastic conduction coil
The lower electric discharge part of discharging gap.
Realizing the technical solution of the utility model aim is：A kind of lower electric discharge part with elastic conduction coil, lower electric discharge
Part includes the lower discharging rod for being equipped with lower discharge end, insulation slip pipe, the plug being slidably arranged in insulation slip pipe, being used to insulate connects
The insulated connecting piece of lower discharging rod and plug, is led at the elastic conduction coil for generating electromagnetic force being set on insulation slip pipe
Electric installation pedestal and for the conductive mounting pillar on cross-arm；The upper end of elastic conduction coil and lower discharging rod stationary phase
Even, the lower end of elastic conduction coil is fixed on conductive mounting pedestal.
The utility model has the following advantages：（1）On the one hand the utility model generates electromagnetic force using elastic conduction coil,
For driving lower electric discharge part to move down, increase discharging gap, to prevent power frequency continued flow；On the other hand it is provided for lower electric discharge part
Reseting elasticity makes it that can restore after moving down to initial position, ensures being normally carried out for next lightning discharge；This structure helps
In reducing component, simplify structure.（2）It can be built in inside lightning protection pillar insulator, to reduce external environmental interference, ensure
It is stable and reliable in work.
Description of the drawings
Fig. 1 is a kind of half section structure diagram of the first structure of the utility model；
Fig. 2 is a kind of half section structure diagram using lightning protection pillar insulator made of lower electric discharge part shown in Fig. 1.
Specific implementation mode
（Embodiment 1, lower electric discharge part）
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
Fig. 1 shows the first specific implementation mode of the utility model.The utility model provides a kind of lower part that discharges, such as
Shown in Fig. 1, which includes lower discharging rod 31, insulation slip pipe 32, elastic conduction coil 33, conductive mounting pedestal 34, leads
Electric mounting column 35, plug 36 and the insulated connecting piece 37 for connection of insulating lower discharging rod and plug.In the present embodiment, decentralization
Torch 31 is equipped with lower discharge end 311 and stretches into the traveller end 312 in insulation slip pipe.
Lower discharging rod is located at the surface of plug, and lower discharging rod and plug are arranged concentrically, and insulated connecting piece is lower discharging rod
It is fixedly connected into an entirety with plug.In the present embodiment, set at the center of lower discharging rod bottom end there are one screw hole, plug top
Center at also be provided with a screw hole；At column, the top of insulated connecting piece is equipped with to be projected upwards the main body of insulated connecting piece
The screw hole of upper stud 371, the upper stud and lower discharging rod is adapted to；The bottom end of insulated connecting piece is equipped with downward projection of lower stud
372, the screw hole adaptation of the lower stud and plug；Insulated connecting piece is fixedly connected with lower discharging rod and plug by screw connection manner.
Lower discharging rod, insulated connecting piece and plug as a whole, under external force, are back and forth slided in the slip pipe that insulate
It is dynamic.
The bottom end of insulation slip pipe is equipped with insulation plug 321, and insulation plug blocks the opening of insulation slip pipe bottom end.
Upper installing hole 341 is equipped at the center of conductive mounting Chuck top, the lower end for the slip pipe that insulate is fixed on this
In mounting hole；Lower mounting hole 342 is equipped at the center of conductive mounting base bottom, the top of conductive mounting pillar is fixed at
In the lower mounting hole；In the present embodiment, upper installing hole and lower mounting hole are all inner bolt holes, on the periphery wall for the slip pipe that insulate and are led
External screw thread is equipped on the periphery wall of electric mounting column, insulation slip pipe is fixed at conductive mounting pedestal by screw connection manner
In upper installing hole, conductive mounting pillar is fixed at by screw connection manner in the lower mounting hole of conductive mounting pedestal.Conduction peace
It fills pillar and is equipped with installation nut assembly 351, the installation of conductive mounting pillar is fixed on external cross-arm.
Elastic conduction coil is set on insulation slip pipe, and elastic conduction coil is spiral；Elastic conduction coil top and
Lower discharging rod electrical connection, the bottom end of elastic conduction coil and the electrical connection of conductive mounting pedestal.In the present embodiment, elastic conduction coil
Top be fixed at by welding manner on the outer wall of lower discharging rod, the bottom end of elastic conduction coil is solid by welding manner
It is arranged on the outer wall of conductive mounting pedestal calmly.Under free state, there are gaps between the bottom end and insulation plug of lower discharging rod.
The present embodiment has the following advantages：（1）It can be built in the enclosed environment in insulator, to ensure lower electric discharge
The cleaning of the lower discharge end of part, is not easily susceptible to the interference of external environment, to ensure that the reliability of discharge prevention action.（2）
When by being struck by lightning, thunder-strike current passes through lower discharging rod, elastic conduction coil, conductive mounting pedestal, conductive mounting pillar successively
On conduction to cross-arm；It, can by presetting the hand of spiral of elastic conduction coil when elastic conduction coil is by the thunder-strike current
So that lower discharging rod stress overcomes the elastic force of elastic conduction coil and moves down so that upper electric discharge part and lower discharging rod it
Between portable protective gaps increase, to be conducive to block power frequency continued flow, promote lightning Protection performance；It, can be according to and after electric discharge
By the reseting elasticity of elastic conduction coil lower electric discharge part is automatically reset to original position.
（Application examples 1, lightning protection pillar insulator）
The application example is using a kind of lightning protection pillar insulator made of above-described embodiment 1, as shown in Fig. 2, including insulation
Son 1, upper electric discharge part 2 and lower electric discharge part 3.
In the application example, thread clamping mechanism 6 is equipped with above insulator；The thread clamping mechanism includes upper fixture block 61,62 and of lower fixture block
Two groups of bolt assemblies 63 for being connected and fixed upper fixture block and lower fixture block；Upper fixture block is equipped with upper clamp slot 611, and lower fixture block is equipped with down
Clamp slot 621, upper clamp slot and lower clamp slot combine to form a clamp hole 64 for clamping aerial insulation cable；In order to just
In connecing electricity from overhead insulating cable, the puncture 65 for piercing through overhead insulating cable crust is additionally provided in upper clamp slot；Specific
In practice, puncture may also set up in lower clamp slot.The center bottom of lower fixture block is set there are one mounting hole 66, and upper electric discharge part connects electricity
End is fixed in the mounting hole, and the fixed form of the power connection end and mounting hole can be selected to be spirally connected fixed or is welded and fixed.
Each group bolt assembly includes 631, clamp nuts 632 of a screw rod and a double nut 633.In use,
It aerial insulated wire cable is clamped with clamp hole, twists clamp nut, you can so that upper fixture block penetrates overhead insulating cable
Insulation sheath, so that thread clamping mechanism and overhead insulating cable form reliable electrical connection；Clamp nut twist it is solid good after, then
Double nut is tightened on corresponding clamp nut, can prevent clamp nut from loosening.
Insulator in the application example includes ceramic shell 11, the upper metal sealing for sealing ceramic shell upper end opening
Part 12 and lower metal seal 13 for sealing ceramic shell lower ending opening；Upper metal seal, lower metal seal and pottery
Porcelain shell is fixedly connected using brazing mode.Increase integrally formed with multiple full skirts 14, the presence of full skirt on the outer wall of ceramic shell
Strong anti-creep electrical property.
Interior insulator is equipped with seal chamber 4；Upper electric discharge part is equipped with the upper discharge end 21 for being located at seal chamber top and stretches upwards
Go out the power connection end 22 of seal chamber；Lower electric discharge part 3 includes lower discharging rod 31, insulation slip pipe 32, elastic conduction coil 33, conductive mounting
Pedestal 34,35 plug 36 of conductive mounting pillar and the insulated connecting piece 37 for connection of insulating lower discharging rod and plug.This application
In example, lower discharging rod 31 is equipped with positioned at the lower discharge end 311 of seal chamber lower part and for stretching into the traveller end in insulation slip pipe
312, it is upper electric discharge part upper discharge end and it is lower electric discharge part lower discharge end there are discharging gaps.
Lower discharging rod is located at the surface of plug, and lower discharging rod and plug are arranged concentrically, and insulated connecting piece is lower discharging rod
It is fixedly connected into an entirety with plug.In the application example, set at the center of lower discharging rod bottom end there are one screw hole, plug top
Center at also be provided with a screw hole；At column, the top of insulated connecting piece is equipped with to be projected upwards the main body of insulated connecting piece
The screw hole of upper stud 371, the upper stud and lower discharging rod is adapted to；The bottom end of insulated connecting piece is equipped with downward projection of lower stud
372, the screw hole adaptation of the lower stud and plug；Insulated connecting piece is fixedly connected with lower discharging rod and plug by screw connection manner.
Lower discharging rod, insulated connecting piece and plug as a whole, under external force, are back and forth slided in the slip pipe that insulate
It is dynamic.
It is upper electric discharge part upper discharge end bottom end be equipped with upper ball discharge 211, spherical discharge face can make field distribution compared with
It is uniform.
The bottom end of insulation slip pipe is equipped with insulation plug 321, and insulation plug blocks the opening of insulation slip pipe bottom end.
Conductive mounting pedestal is weldingly fixed on lower metal seal；Upper peace is equipped at the center of conductive mounting Chuck top
Hole 341 is filled, the lower end for the slip pipe that insulate is fixed in the upper installing hole；Lower peace is equipped at the center of conductive mounting base bottom
Hole 342 is filled, the top of conductive mounting pillar is fixed in the lower mounting hole；In the application example, upper installing hole and lower installation
Hole is all inner bolt hole, and external screw thread is equipped on the periphery wall for the slip pipe that insulate and on the periphery wall of conductive mounting pillar, and insulation is slided
Pipe is fixed at by screw connection manner in the upper installing hole of conductive mounting pedestal, and conductive mounting pillar is fixed by screw connection manner
It is arranged in the lower mounting hole of conductive mounting pedestal.Conductive mounting pillar is equipped with installation nut assembly 351, conductive mounting pillar
Installation is fixed on external cross-arm.
Elastic conduction coil is set on insulation slip pipe, and elastic conduction coil is spiral；Elastic conduction coil top and
Lower discharging rod electrical connection, the bottom end of elastic conduction coil and the electrical connection of conductive mounting pedestal.In the application example, elastic conduction coil
Top be fixed at by welding manner on the outer wall of lower discharging rod, the bottom end of elastic conduction coil is solid by welding manner
It is arranged on the outer wall of conductive mounting pedestal calmly.Under free state, there are gaps between the bottom end and insulation plug of lower discharging rod.
The middle-end of upper electric discharge part is additionally provided with enhancing annular convex platform 23, enhancing annular convex platform and the weldering of upper metal seal on this
It connects connected.
In the application example, upper electric discharge part and lower discharging rod are on same straight line.
In the application example, seal chamber can be vacuum chamber, can also filled with air, inert gas or sulfur hexafluoride gas,
It is preferred that using vacuum chamber or it is interior fill sulfur hexafluoride gas, the two relative to it is interior fill air for, discharging gap can be reduced
Required size, to reduce overall volume.
The application example has the following advantages：（1）Seal chamber is set inside insulator body, thus upper electric discharge part under
Two discharge ends of electric discharge part are built in a closed environment, to the upper discharge end of electric discharge part and lower electric discharge part in guarantee
The cleaning of lower discharge end be not easily susceptible to the interference of external environment simultaneously because the internal environment of seal chamber is relatively stable, to
It ensure that the reliability of discharge prevention action.（2）In the application example, upper electric discharge part and lower electric discharge part are arranged along same straight line, with
It is compared using inclined starting rod in traditional gap protection device, in a lateral direction, reduces occupied space.（3）It should
Use-case when in use, when neighbouring circuit is by being struck by lightning, discharges, thunder-strike current passes through successively between upper electric discharge part and lower discharging rod
Discharging rod, elastic conduction coil, conductive mounting pedestal, conductive mounting pillar is crossed down to conduct to cross-arm；When elastic conduction coil
When by the thunder-strike current, by presetting the hand of spiral of elastic conduction coil, lower discharging rod stress may make to overcome elastic conducting
The elastic force of electric coil and move down so that the portable protective gaps between upper electric discharge part and lower discharging rod increase, to advantageous
In blocking power frequency continued flow, lightning Protection performance is promoted；And after electric discharge, the reseting elasticity of elastic conduction coil can be relied on to make
Electric discharge part must be descended to automatically reset to original position.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.And the obvious changes or variations that these connotations for belonging to the utility model are extended out still fall within this practicality
Novel protection domain.
Claims (1)
1. a kind of lower electric discharge part with elastic conduction coil, it is characterised in that：Lower electric discharge part includes being equipped under lower discharge end
Discharging rod, insulation slip pipe, the plug being slidably arranged in insulation slip pipe, for the insulation company of the insulate lower discharging rod of connection and plug
Fitting is set in the elastic conduction coil for generating electromagnetic force to insulate on slip pipe, conductive mounting pedestal and for being mounted on
Conductive mounting pillar on cross-arm；
The upper end of elastic conduction coil and lower discharging rod are fixedly linked, and the lower end of elastic conduction coil is fixed at conductive mounting
On pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721079210.XU CN207896663U (en) | 2017-08-26 | 2017-08-26 | A kind of lower electric discharge part with elastic conduction coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721079210.XU CN207896663U (en) | 2017-08-26 | 2017-08-26 | A kind of lower electric discharge part with elastic conduction coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896663U true CN207896663U (en) | 2018-09-21 |
Family
ID=63547460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721079210.XU Expired - Fee Related CN207896663U (en) | 2017-08-26 | 2017-08-26 | A kind of lower electric discharge part with elastic conduction coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896663U (en) |
-
2017
- 2017-08-26 CN CN201721079210.XU patent/CN207896663U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180921 Termination date: 20200826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |