CN107359024A - The lightning protection pillar insulator of power frequency continued flow can be blocked - Google Patents
The lightning protection pillar insulator of power frequency continued flow can be blocked Download PDFInfo
- Publication number
- CN107359024A CN107359024A CN201710770236.7A CN201710770236A CN107359024A CN 107359024 A CN107359024 A CN 107359024A CN 201710770236 A CN201710770236 A CN 201710770236A CN 107359024 A CN107359024 A CN 107359024A
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- Prior art keywords
- discharging rod
- plug
- electric discharge
- discharge part
- slip pipe
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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
Abstract
The invention discloses a kind of lightning protection pillar insulator that can block power frequency continued flow, including insulator, upper electric discharge part and lower electric discharge part；Interior insulator is provided with annular seal space；Upper electric discharge part is provided with the upper discharge end positioned at annular seal space top；Lower electric discharge part includes insulation slip pipe, the conductive coil for being used to produce electromagnetic force being set on insulation slip pipe, the lower discharging rod provided with lower discharge end, the plug being slidably arranged in insulation slip pipe, the back-moving spring for providing reseting elasticity for plug and the conductive mounting pillar for being used to be arranged on cross-arm for stretching out insulator；The upper end of conductive coil and the electrical connection of lower discharging rod, the lower end of conductive coil and the electrical connection of conductive mounting pillar；Lower discharging rod and plug are fixedly linked；The upper discharge end of upper electric discharge part and the lower discharge end of lower discharging rod leave discharging gap.The present invention reduces outside environmental elements interference, lifts lightning Protection property stable and reliable for performance.
Description
Technical field
The invention belongs to electric power overhead insulated circuit lightning Protection technical field, and in particular to one kind can block power frequency continued flow
Lightning protection pillar insulator.
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 that can block power frequency continued flow.
Realizing the technical scheme of the object of the invention is：A kind of lightning protection pillar insulator that can block power frequency continued flow, including it is exhausted
Edge, 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, upper discharging rod
Power connection end and the thread clamping mechanism electrically connect；It is lower electric discharge part include insulation slip pipe, be set in insulation slip pipe on be used for produce electricity
The conductive coil of magnetic force, the lower discharging rod provided with lower discharge end, be slidably arranged in insulation slip pipe in plug, for being carried for plug
The conductive mounting pillar for being used to be arranged on cross-arm of back-moving spring and stretching insulator for reseting elasticity；Conductive coil it is upper
End and the electrical connection of lower discharging rod, the lower end of conductive coil and the electrical connection of conductive mounting pillar；Lower discharging rod and plug are fixedly linked；
The upper discharge end of upper electric discharge part and the lower discharge end of lower discharging rod leave discharging gap.
It is further to be preferably in such scheme：Lower discharging rod and plug insulation is fixedly linked.
It is further to be preferably in such scheme：Lower electric discharge part also includes being used to insulate connecting lower discharging rod and plug
Insulated connecting piece.
It is further to be preferably in such scheme：Lower discharging rod is located at the surface of plug, the center of lower discharging rod bottom
Place is provided with a screw, and a screw also is provided with the center on plug top；The main body of insulated connecting piece connects into column, insulation
The top of part is provided with the screw adaptation of the upper stud projected upwards, the upper stud and lower discharging rod；The bottom of insulated connecting piece is set
There is downward projection of lower stud, the screw adaptation of the lower stud and plug；Insulated connecting piece is fixedly connected down by screw connection manner
Discharging rod and plug.
It is further to be preferably in such scheme：Lower electric discharge part also includes conductive slip pipe, and conductive slip pipe is set in lower electric discharge
On rod, lower discharging rod and conductive slip pipe are electrically connected by sliding realize；The upper end of lead loop is weldingly fixed on conductive slip pipe
On outer wall.
It is further to be preferably in such scheme：The periphery wall of conductive slip pipe bottom is by being spirally connected or bonding mode is fixed
It is arranged on the internal perisporium on insulation tube top.
The present invention has advantages below：（1）When circuit is by being struck by lightning, it is upper electric discharge part and it is lower electric discharge part lower discharging rod it
Between discharge, thunder-strike current successively by lower discharging rod, conductive slip pipe, conductive coil, conductive mounting pedestal, conductive mounting pillar pass
It is directed on cross-arm；When conductive coil is by the thunder-strike current, by preset conductive coil the hand of spiral, may be such that plug by
Power moves down, so that the portable protective gaps increase between upper electric discharge part and lower discharging rod, continues so as to be advantageous to block power frequency
Stream, lift lightning Protection performance.（2）Annular seal space is set inside insulator body, so as to upper electric discharge part and lower discharging rod
Two discharge ends are built in the environment of a closing, so as to ensure the lower electric discharge of the upper discharge end and lower discharging rod of upper electric discharge part
The cleaning at end, simultaneously because the internal environment of annular seal space is relatively stable, the interference of external environment is not easily susceptible to, is put so as to ensure that
The reliability of electric protection action.
Brief description of the drawings
Fig. 1 is a kind of half section structure diagram of the present invention.
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, as shown in figure 1, including insulator 1, upper electric discharge part 2 and lower electric discharge part 3.
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, plug 32, connects lower discharging rod and plug for insulating
Insulated connecting piece 33, insulation tube 34, conductive slip pipe 35, conductive coil 36, the back-moving spring 37 that reseting elasticity is provided for plug,
Conductive mounting pedestal 38 and conductive mounting pillar 39；In the present embodiment, lower discharging rod 31 is provided with the decentralization positioned at annular seal space bottom
Electric end 311；The upper discharge end of upper electric discharge part and the lower discharge end of lower discharging rod leave discharging gap.
Also side is provided with thread clamping mechanism 6 to the present embodiment on the 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；The bottom of the upper discharge end of upper electric discharge part is provided with upper ball discharge 211.The middle-end of upper electric discharge part is additionally provided with
Strengthen annular boss 23, enhancing annular boss and upper metal seal are weldingly connected on this.In the present embodiment, upper electric discharge part is with
Discharging rod is on same straight line.
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 331, the upper stud and lower discharging rod；The bottom of insulated connecting piece is provided with downward projection of lower stud
332, 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.
Conductive slip pipe is set on the periphery wall of lower discharging rod, lower discharging rod and the electrical connection of conductive slip pipe.
Conductive slip pipe is fixedly installed on insulation tube, in the present embodiment, the periphery wall of conductive slip pipe bottom by being spirally connected or
Bonding mode is fixedly installed on the internal perisporium on insulation tube top.
The bottom of insulation tube is provided with insulation plug 341, and insulation plug blocks the opening of insulation tube bottom.
Insulated connecting piece, plug and back-moving spring are located in the tube chamber of insulation tube, and the bottom of back-moving spring is connected to insulation
On plug, the top of back-moving spring is connected on plug, and under free state, insulated connecting piece is under the elastic force effect of back-moving spring
Upward top pressure is on the bottom of conductive slip pipe.
Conductive mounting pedestal is weldingly fixed on lower metal seal；Upper peace is provided with the center of conductive mounting Chuck top
Hole 381 is filled, the lower end of insulation tube is fixedly installed in the upper installing hole；Lower installation is provided with the center of conductive mounting base bottom
Hole 382, the top of conductive mounting pillar are fixedly installed in the lower mounting hole；In the present embodiment, upper installing hole and lower mounting hole
All it is inner bolt hole, is equipped with external screw thread on the periphery wall of insulation tube and on the periphery wall of conductive mounting pillar, insulation tube passes through
Screw connection manner is fixedly installed in the upper installing hole of conductive mounting pedestal, and conductive mounting pillar is fixedly installed on by screw connection manner
In the lower mounting hole of conductive mounting pedestal.Conductive mounting pillar is provided with installation nut assembly 391, and the installation of conductive mounting pillar is solid
Surely it is arranged on external cross-arm.
Conductive coil is set on insulation tube, the top of conductive coil and the electrical connection of conductive slip pipe, the bottom of conductive coil
Electrically connected with conductive mounting pedestal.In the present embodiment, conductive coil is made of flat copper, and the top of conductive coil passes through welding side
Formula is fixedly installed on the periphery wall of conductive slip pipe, and the bottom of conductive coil is fixedly installed on conductive mounting base by welding manner
On the outer wall of seat.
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 when in use, when neighbouring circuit is by being struck by lightning, it is upper electric discharge part and it is lower electric discharge part lower discharging rod
Between discharge, thunder-strike current successively by lower discharging rod, conductive slip pipe, conductive coil, conductive mounting pedestal, conductive mounting pillar
On conduction to cross-arm；When conductive coil is by the thunder-strike current, by presetting the hand of spiral of conductive coil, plug may be such that
Stress moves down, so that the portable protective gaps increase between upper electric discharge part and lower discharging rod, so as to be advantageous to block power frequency
Afterflow, lift lightning Protection performance.
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 discharging rod are built in the environment of a closing, so as to ensure the upper discharge end of upper electric discharge part and lower discharging rod
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 discharging rod are set along same straight line, with
Compared in traditional gap protection device using inclined starting rod, in a lateral direction, reduce space-consuming.
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 (6)
1. a kind of lightning protection pillar insulator that can block power frequency continued flow, including insulator, upper electric discharge part and lower electric discharge part；Insulator
Top be provided with and be used to clamp the thread clamping mechanism of cable；It is characterized in that：Interior insulator is provided with annular seal space；
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；
It is lower electric discharge part include insulation slip pipe, be set in insulation slip pipe on be used for produce the conductive coil of electromagnetic force, provided with decentralization
The lower discharging rod at electric end, be slidably arranged in insulation slip pipe in plug, the back-moving spring for providing reseting elasticity for plug and
Stretch out the conductive mounting pillar for being used to be arranged on cross-arm of insulator；The upper end of conductive coil and the electrical connection of lower discharging rod, lead
The lower end of electric coil and the electrical connection of conductive mounting pillar；Lower discharging rod and plug are fixedly linked；
The upper discharge end of upper electric discharge part and the lower discharge end of lower discharging rod leave discharging gap.
2. the lightning protection pillar insulator according to claim 1 that power frequency continued flow can be blocked, it is characterised in that：Lower discharging rod and
Plug insulation is fixedly linked.
3. the lightning protection pillar insulator according to claim 2 that power frequency continued flow can be blocked, it is characterised in that：Lower electric discharge part is also
Insulated connecting piece including connecting lower discharging rod and plug for insulating.
4. the lightning protection pillar insulator according to claim 3 that power frequency continued flow can be blocked, it is characterised in that：Lower discharging rod position
A screw is provided with the surface of plug, the center of lower discharging rod bottom, a spiral shell also is provided with the center on plug top
Hole；For the main body of insulated connecting piece into column, the top of insulated connecting piece is provided with the upper stud projected upwards, the upper stud and decentralization
The screw adaptation of torch；The bottom of insulated connecting piece is provided with downward projection of lower stud, 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.
5. the lightning protection pillar insulator according to claim 4 that power frequency continued flow can be blocked, it is characterised in that：Lower electric discharge part is also
Including conductive slip pipe, conductive slip pipe is set on lower discharging rod, and lower discharging rod and conductive slip pipe are electrically connected by sliding realize；Lead
The upper end of line coil is weldingly fixed on the outer wall of conductive slip pipe.
6. the lightning protection pillar insulator according to claim 5 that power frequency continued flow can be blocked, it is characterised in that：Conductive slip pipe bottom
The periphery wall at end is by being spirally connected or bonding mode is fixedly installed on the internal perisporium on insulation tube top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710770236.7A CN107359024A (en) | 2017-08-26 | 2017-08-26 | The lightning protection pillar insulator of power frequency continued flow can be blocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710770236.7A CN107359024A (en) | 2017-08-26 | 2017-08-26 | The lightning protection pillar insulator of power frequency continued flow can be blocked |
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| Publication Number | Publication Date |
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| CN107359024A true CN107359024A (en) | 2017-11-17 |
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| CN201710770236.7A Pending CN107359024A (en) | 2017-08-26 | 2017-08-26 | The lightning protection pillar insulator of power frequency continued flow can be blocked |
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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 CN201710770236.7A patent/CN107359024A/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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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171117 |
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| RJ01 | Rejection of invention patent application after publication |