CN107346685A - Utilize the lightning protection pillar insulator in elastic conduction coil reset discharge gap - Google Patents
Utilize the lightning protection pillar insulator in elastic conduction coil reset discharge gap Download PDFInfo
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- CN107346685A CN107346685A CN201710745883.2A CN201710745883A CN107346685A CN 107346685 A CN107346685 A CN 107346685A CN 201710745883 A CN201710745883 A CN 201710745883A CN 107346685 A CN107346685 A CN 107346685A
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- elastic conduction
- conduction coil
- electric discharge
- discharge part
- discharging rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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Abstract
The invention discloses a kind of lightning protection pillar insulator using elastic conduction coil reset discharge gap, including insulator, upper electric discharge part and lower electric discharge part；The top of insulator is provided with the thread clamping mechanism for being used for clamping cable；Interior insulator is provided with annular seal space；Upper electric discharge part is provided with upper discharge end and the upward power connection end for stretching out annular seal space positioned at annular seal space top, and the power connection end of upper discharging rod and the thread clamping mechanism electrically connect；Lower electric discharge part includes lower discharging rod, insulation slip pipe, the elastic conduction coil for providing reseting elasticity for lower discharging rod, conductive mounting pedestal and conductive mounting pillar；Lower discharging rod is provided with positioned at the lower discharge end of annular seal space bottom and for stretching into the traveller end in insulation slip pipe；The upper end of elastic conduction coil and lower discharging rod are fixedly linked, and the lower end of elastic conduction coil is fixedly installed on conductive mounting pedestal；The lower discharge end of the upper discharge end of upper electric discharge part and lower electric discharge part leaves discharging gap.The present invention helps to reduce part, simplifies structure.
Description
Technical field
The invention belongs to electric power overhead insulated circuit lightning Protection technical field, and in particular to one kind utilizes elastic conducting electric wire
Enclose the lightning protection pillar insulator in reset discharge gap.
Background technology
Overhead line can produce power frequency continued flow after being struck by lightning, so-called power frequency continued flow, be exactly overhead line after overhead line is struck by lightning
Thunder and lightning arc is just produced 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, the power supply of overhead line is set to occur over the ground（Cross-arm）Short circuit, this short circuit current are referred to 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 occurs.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, because insulating barrier resistance is big, electric charge is not easy to flow, when the charge collection on insulating barrier is to certain electricity, in thunder
In the presence of cloud, the electric discharge between positive and negative charge, insulating barrier is caused to puncture, breakdown point is generally near metal cross arm, because relatively
For, the charge inducing of this position is more, such as concurrent, cross-arm can all produce charge inducing, in positive and negative charge and when produce
The insulating barrier that raw heat is oriented to overhead insulating punctures.When producing 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 turns into afterflow source, 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
Gold utensil, composite insulator, starting rod and lower steel pin etc. form.Its main feature：（1）When thunderbolt occurs, starting rod and lower steel
Causing umbrella network to discharge between pin, form short-channel, the power frequency arc to continue, which is moved between starting rod and lower steel pin, to burn, with
Protect wire from burn.Because starting rod gets around full skirt and adjusts to optimal discharge gap, discharge effect is more preferable, and prevents from burning out
Insulator umbrella.
But this kind of lightning protection pillar insulator still suffers from following weak point：The point of discharge of starting rod and lower steel pin is exposed,
Easily accumulation dirt, influences discharging action.In addition, the discharging gap between this kind of starting rod and lower steel pin immobilizes, still
Ambient weather is frequently to change, and is easily caused malfunction or discharging action can not occur.
The content of the invention
The present invention provides a kind of lightning protection pillar insulator using elastic conduction coil reset discharge gap.
Realizing the technical scheme of the object of the invention is：A kind of lightning protection pillar using elastic conduction coil reset discharge gap
Insulator, including insulator, upper electric discharge part and lower electric discharge part；The top of insulator is provided with the thread clamping mechanism for being used for clamping cable；
Interior insulator is provided with annular seal space；The upper discharge end that upper electric discharge part is provided with positioned at annular seal space top stretches out connecing for annular seal space with upward
Electric end, the power connection end of upper discharging rod and the thread clamping mechanism electrically connect；It is lower electric discharge part include lower discharging rod, insulation slip pipe, for for
Lower discharging rod provides the elastic conduction coil of reseting elasticity, conductive mounting pedestal and for the conductive mounting branch on cross-arm
Post；Lower discharging rod is provided with positioned at the lower discharge end of annular seal space bottom and for stretching into the traveller end in insulation slip pipe；Elastic conduction
The upper end of coil and lower discharging rod are fixedly linked, and the lower end of elastic conduction coil is fixedly installed on conductive mounting pedestal；On put
The lower discharge end of the upper discharge end of electric part and lower electric discharge part leaves discharging gap.
It is further to be preferably in such scheme：Annular seal space is vacuum chamber.
It is further to be preferably in such scheme：Insulator includes ceramic shell, for sealing ceramic shell upper end open
Upper metal seal and lower metal seal for sealing ceramic shell lower ending opening；Upper metal seal, lower metal are close
Sealing is fixedly connected with ceramic shell using brazing mode.
It is further to be preferably in such scheme：Conductive mounting pedestal is weldingly fixed on lower metal seal；Conduction peace
Fill and be provided with upper installing hole at the center of Chuck top, the lower end for the slip pipe that insulate is fixedly installed in the upper installing hole；Conductive mounting
Lower mounting hole is provided with the center of base bottom, the top of conductive mounting pillar is fixedly installed in the lower mounting hole.
It is further to be preferably in such scheme：Elastic conduction coil be set in insulation slip pipe on, elastic conduction coil into
Helical form.
It is further to be preferably in such scheme：The top of elastic conduction coil is fixedly installed on down by welding manner
On the outer wall of discharging rod, the bottom of elastic conduction coil is fixedly installed on by welding manner on the outer wall of conductive mounting pedestal.
It is further to be preferably in such scheme：The bottom of insulation slip pipe is provided with insulation plug, and insulation plug blocks absolutely
The opening of edge slip pipe bottom；Gap is left between the bottom of lower discharging rod and insulation plug.
It is further to be preferably in such scheme：The middle-end of upper electric discharge part is additionally provided with enhancing annular boss, enhancing on this
Annular boss and upper metal seal are weldingly connected.
The present invention has advantages below：（1）On the one hand elastic conduction coil produces electromagnetic force, for driving under lower electric discharge part
Move, increase discharging gap, so as to prevent power frequency continued flow；On the other hand reseting elasticity is provided for lower electric discharge part, makes it under
It can recover to initial position after shifting, ensure being normally carried out for next lightning discharge；This structure helps to reduce part, simplifies knot
Structure.（2）Annular seal space is set inside insulator body, so as to which two discharge ends of upper electric discharge part and lower electric discharge part are built in one
In the environment of individual closing, so as to ensure the cleaning of the lower discharge end of the upper discharge end of upper electric discharge part and lower electric discharge part, simultaneously because
The internal environment of annular seal space is relatively stable, is not easily susceptible to the interference of external environment, so as to ensure that the reliable of discharge prevention action
Property.（3）In the present embodiment, upper electric discharge part and lower electric discharge part are set along same straight line, with being used in traditional gap protection device
Inclined starting rod is compared, and in a lateral direction, reduces space-consuming.
Brief description of the drawings
Fig. 1 is a kind of half section structure diagram of the first structure of the invention；
Fig. 2 is a kind of half section structure diagram of second of structure of the invention.
Mark shown in accompanying drawing for：Including insulator 1, ceramic shell 11, upper metal seal 12, lower metal seal 13,
Full skirt 14, upper electric discharge part 2, upper discharge end 21, upper ball discharge 211, power connection end 22, upper enhancing annular boss 23,
Lower electric discharge part 3, lower discharging rod 31, discharge end 311, traveller end 312, insulate slip pipe 32, and insulate plug 321, elastic conduction
Coil 33, conductive mounting pedestal 34, upper installing hole 341, lower mounting hole 342, conductive mounting pillar 35, nut assembly 351 is installed,
Plug 36, insulated connecting piece 37, upper stud 371, lower stud 372, annular seal space 4, thread clamping mechanism 6, upper fixture block 61, lower fixture block 62,
Bolt assembly 63, upper clamp groove 611, lower clamp groove 621, clamp hole 64, puncture 65, mounting hole 66, screw rod 631, clamp nut
632, double nut 633.
Embodiment
（Embodiment 1, lightning protection pillar insulator）
It is below in conjunction with accompanying drawing and specifically real to make the technical problem to be solved in the present invention, technical scheme and advantage clearer
Example is applied to be described in detail.
Fig. 1 shows a kind of embodiment of the present invention.The present invention provides a kind of lightning protection pillar insulator, such as Fig. 1
It is shown, including insulator 1, upper electric discharge part 2 and lower electric discharge part 3.
In the present embodiment, thread clamping mechanism 6 is provided with above insulator；The thread clamping mechanism includes upper fixture block 61, the and of lower fixture block 62
Two groups of bolt assemblies 63 for be connected upper fixture block and lower fixture block；Upper fixture block is provided with upper clamp groove 611, and lower fixture block is provided with down
Clamp groove 621, upper clamp groove and lower clamp groove combine to form a clamp hole 64 for being used to clamp 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 with upper clamp groove；Specific
In practice, puncture is may also set up in lower clamp groove.The center bottom of lower fixture block is provided with a mounting hole 66, and upper electric discharge part connects electricity
End is fixedly installed 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,
Overhead insulating cable is lived with clamp hole clip, twist 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 present embodiment includes ceramic shell 11, the upper metal sealing for sealing ceramic shell upper end open
Part 12 and the lower metal seal 13 for sealing ceramic shell lower ending opening；Upper metal seal, lower metal seal and pottery
Porcelain housing is fixedly connected using brazing mode.Increase on the outer wall of ceramic shell integrally formed with multiple full skirts 14, the presence of full skirt
Strong anti-creep electrical property.
Interior insulator is provided with annular seal space 4；Upper electric discharge part is provided with the upper discharge end 21 for being located at annular seal space top and stretched upwards
Go out the power connection end 22 of annular seal space；Lower electric discharge part 3 includes lower discharging rod 31, insulation slip pipe 32, elastic conduction coil 33, conductive mounting
Pedestal 34 and conductive mounting pillar 35；In the present embodiment, lower discharging rod 31 is provided with the He of lower discharge end 311 positioned at annular seal space bottom
For stretching into the traveller end 312 in insulation slip pipe, the upper discharge end and the lower lower discharge end for discharging part of upper electric discharge part leave electric discharge
Gap.
The bottom of the upper discharge end of upper electric discharge part is provided with upper ball discharge 211, spherical discharge face can cause Electric Field Distribution compared with
To be uniform.
The bottom of insulation slip pipe is provided with insulation plug 321, and insulation plug blocks the opening of insulation slip pipe bottom.
Conductive mounting pedestal is weldingly fixed on lower metal seal；Upper peace is provided with the center of conductive mounting Chuck top
Hole 341 is filled, the lower end for the slip pipe that insulate is fixedly installed in the upper installing hole；Lower peace is provided with the center of conductive mounting base bottom
Hole 342 is filled, the top of conductive mounting pillar is fixedly installed in the lower mounting hole；In the present embodiment, upper installing hole and lower installation
Hole is all inner bolt hole, and external screw thread is equipped with the periphery wall for the slip pipe that insulate and on the periphery wall of conductive mounting pillar, and insulation is slided
Pipe is fixedly installed on 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 provided with installation nut assembly 351, conductive mounting pillar
Installation is fixedly installed on external cross-arm.
Elastic conduction coil is set on insulation slip pipe, elastic conduction coil curl；Elastic conduction coil top and
Lower discharging rod electrical connection, the bottom of elastic conduction coil and the electrical connection of conductive mounting pedestal.In the present embodiment, elastic conduction coil
Top be fixedly installed on by welding manner on the outer wall of lower discharging rod, the bottom of elastic conduction coil is consolidated by welding manner
Surely it is arranged on the outer wall of conductive mounting pedestal.Under free state, gap is left between the bottom of lower discharging rod and insulation plug.
The middle-end of upper electric discharge part is additionally provided with enhancing annular boss 23, enhancing annular boss and the weldering of upper metal seal on this
Connect connected.
In the present embodiment, upper electric discharge part and lower discharging rod are on same straight line.
In the present embodiment, annular seal space 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, both relative to it is interior fill air for, discharging gap can be reduced
Required size, so as to reduce overall volume.
The present embodiment has advantages below：（1）Annular seal space is set inside insulator body, so that upper electric discharge part with
Two discharge ends of electric discharge part are built in the environment of a closing, so as to ensure the upper discharge end of upper electric discharge part and lower electric discharge part
Lower discharge end cleaning, simultaneously because the internal environment of annular seal space is relatively stable, be not easily susceptible to the interference of external environment, so as to
It ensure that the reliability of discharge prevention action.（2）In the present embodiment, upper electric discharge part and lower electric discharge part are set along same straight line, with
Compared in traditional gap protection device using inclined starting rod, in a lateral direction, reduce space-consuming.（3）This reality
Apply example when in use, when neighbouring circuit is by being struck by lightning, discharged between upper electric discharge part and lower discharging rod, thunder-strike current passes through successively
Discharging rod, elastic conduction coil, conductive mounting pedestal, conductive mounting pillar is crossed down to conduct to cross-arm；When elastic conduction coil
During by the thunder-strike current, by presetting the hand of spiral of elastic conduction coil, it may be such that lower discharging rod stress overcomes elastic conducting
The elastic force of electric coil and move down so that the portable protective gaps increase between upper electric discharge part and lower discharging rod, so as to favourable
In blocking power frequency continued flow, lightning Protection performance is lifted.
（Embodiment 2）
Fig. 2 shows second of embodiment of the present invention.
The present embodiment and embodiment 1 are essentially identical, and difference is：Lower electric discharge part and embodiment 1 in the present embodiment
In lower electric discharge part structure it is different；As shown in Figure 2, the lower electric discharge part 3 in the present embodiment also includes plug 36 and for insulating
The insulated connecting piece 37 of the lower discharging rod of connection and plug.
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
An entirety is fixedly connected into plug.In the present embodiment, a screw, plug top are provided with the center of lower discharging rod bottom
Center at also be provided with a screw；The main body of insulated connecting piece is provided with what is projected upwards into column, the top of insulated connecting piece
The screw adaptation of upper stud 371, the upper stud and lower discharging rod；The bottom of insulated connecting piece is provided with downward projection of lower stud
372, the screw 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 under external force, are back and forth slided as an entirety in the slip pipe that insulate
It is dynamic.
The present embodiment when in use, when neighbouring circuit is by being struck by lightning, discharges between upper electric discharge part and lower discharging rod, thunder
Electric current is hit to conduct to cross-arm by lower discharging rod, elastic conduction coil, conductive mounting pedestal, conductive mounting pillar successively；When
When elastic conduction coil is by the thunder-strike current, by preset elastic conduction coil the hand of spiral, may be such that plug stress to
Lower movement, and then drive insulated connecting piece and lower discharging rod to overcome the elastic force of elastic conduction coil to move down, so that on
The portable protective gaps increase discharged between part and lower discharging rod, so as to be advantageous to block power frequency continued flow, lifts lightning Protection performance.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still falls within protection scope of the present invention.
Claims (8)
1. a kind of lightning protection pillar insulator using elastic conduction coil reset discharge gap, including insulator, upper electric discharge part and
Lower electric discharge part；The top of insulator is provided with the thread clamping mechanism for being used for clamping cable；It is characterized in that：Interior insulator is provided with sealing
Chamber；
The upper discharge end and the upward power connection end for stretching out annular seal space, upper discharging rod that upper electric discharge part is provided with positioned at annular seal space top connect
Electric end and the thread clamping mechanism electrically connect；
Lower electric discharge part includes lower discharging rod, insulation slip pipe, the elastic conduction coil for providing reseting elasticity for lower discharging rod, led
Electric installation pedestal and for the conductive mounting pillar on cross-arm；
Lower discharging rod is provided with positioned at the lower discharge end of annular seal space bottom and for stretching into the traveller end in insulation slip pipe；
The upper end of elastic conduction coil and lower discharging rod are fixedly linked, and the lower end of elastic conduction coil is fixedly installed on conductive mounting
On pedestal；
The lower discharge end of the upper discharge end of upper electric discharge part and lower electric discharge part leaves discharging gap.
2. the lightning protection pillar insulator according to claim 1 using elastic conduction coil reset discharge gap, its feature
It is：Annular seal space is vacuum chamber.
3. the lightning protection pillar insulator according to claim 2 using elastic conduction coil reset discharge gap, its feature
It is：Insulator includes ceramic shell, the upper metal seal for sealing ceramic shell upper end open and for sealing ceramics
The lower metal seal of housing lower ending opening；Upper metal seal, lower metal seal and ceramic shell are consolidated using brazing mode
Fixed connection.
4. the lightning protection pillar insulator according to claim 3 using elastic conduction coil reset discharge gap, its feature
It is：Conductive mounting pedestal is weldingly fixed on lower metal seal；Upper installation is provided with the center of conductive mounting Chuck top
Hole, the lower end for the slip pipe that insulate are fixedly installed in the upper installing hole；Lower mounting hole is provided with the center of conductive mounting base bottom,
The top of conductive mounting pillar is fixedly installed in the lower mounting hole.
5. the lightning protection pillar insulator according to claim 4 using elastic conduction coil reset discharge gap, its feature
It is：Elastic conduction coil is set on insulation slip pipe, elastic conduction coil curl.
6. the lightning protection pillar insulator according to claim 5 using elastic conduction coil reset discharge gap, its feature
It is：The top of elastic conduction coil is fixedly installed on by welding manner on the outer wall of lower discharging rod, elastic conduction coil
Bottom is fixedly installed on by welding manner on the outer wall of conductive mounting pedestal.
7. the lightning protection pillar insulator according to claim 6 using elastic conduction coil reset discharge gap, its feature
It is：The bottom of insulation slip pipe is provided with insulation plug, and insulation plug blocks the opening of insulation slip pipe bottom；The bottom of lower discharging rod
Gap is left between end and insulation plug.
8. the lightning protection pillar insulator according to claim 7 using elastic conduction coil reset discharge gap, its feature
It is：The middle-end of upper electric discharge part is additionally provided with enhancing annular boss, enhancing annular boss and upper metal seal welding phase on this
Even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710745883.2A CN107346685A (en) | 2017-08-26 | 2017-08-26 | Utilize the lightning protection pillar insulator in elastic conduction coil reset discharge gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710745883.2A CN107346685A (en) | 2017-08-26 | 2017-08-26 | Utilize the lightning protection pillar insulator in elastic conduction coil reset discharge gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107346685A true CN107346685A (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710745883.2A Pending CN107346685A (en) | 2017-08-26 | 2017-08-26 | Utilize the lightning protection pillar insulator in elastic conduction coil reset discharge gap |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201185110Y (en) * | 2007-09-06 | 2009-01-21 | 固力发电气有限公司 | Puncture type lightning protection insulator |
| CN101894722A (en) * | 2010-08-06 | 2010-11-24 | 蒋贤华 | Vacuum discharge tube |
| CN204088878U (en) * | 2014-09-19 | 2015-01-07 | 陕西鑫盾科技有限公司 | A kind of afterflow of cut-out automatically inter space device |
| CN104393489A (en) * | 2014-11-24 | 2015-03-04 | 南京信息工程大学 | Gas discharge tube with movable electrodes |
| CN104716563A (en) * | 2015-03-24 | 2015-06-17 | 合肥南南电力保护设备有限公司 | Self-cutting follow current lightning arrester |
-
2017
- 2017-08-26 CN CN201710745883.2A patent/CN107346685A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201185110Y (en) * | 2007-09-06 | 2009-01-21 | 固力发电气有限公司 | Puncture type lightning protection insulator |
| CN101894722A (en) * | 2010-08-06 | 2010-11-24 | 蒋贤华 | Vacuum discharge tube |
| CN204088878U (en) * | 2014-09-19 | 2015-01-07 | 陕西鑫盾科技有限公司 | A kind of afterflow of cut-out automatically inter space device |
| CN104393489A (en) * | 2014-11-24 | 2015-03-04 | 南京信息工程大学 | Gas discharge tube with movable electrodes |
| CN104716563A (en) * | 2015-03-24 | 2015-06-17 | 合肥南南电力保护设备有限公司 | Self-cutting follow current lightning arrester |
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Application publication date: 20171114 |
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