CN207217201U - A kind of separate assembling compresses arc-extinguishing tube - Google Patents

A kind of separate assembling compresses arc-extinguishing tube Download PDF

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Publication number
CN207217201U
CN207217201U CN201721068105.6U CN201721068105U CN207217201U CN 207217201 U CN207217201 U CN 207217201U CN 201721068105 U CN201721068105 U CN 201721068105U CN 207217201 U CN207217201 U CN 207217201U
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China
Prior art keywords
arc
semicanal
centre
extinguishing tube
arc part
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Withdrawn - After Issue
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CN201721068105.6U
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Chinese (zh)
Inventor
王硕
闫珅
黄上师
王中
闫仁宝
黄嘉曦
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Abstract

The utility model discloses a kind of separate assembling to compress arc-extinguishing tube, including arc part is led in arc-extinguishing tube main body and centre(3);Arc-extinguishing tube main body is by left semicanal(1)With right semicanal(2)Composition;Described left semicanal(1)The bore at both ends is the same and leads arc part less than centre(3)Diameter, left semicanal(1)Pipe external diameter lead arc part less than or equal to centre(3)Diameter;Described right semicanal(2)One end bore and left semicanal(1)Bore it is the same, other end bore leads arc part more than or equal to centre(3)Diameter;Arc part is being led into centre(3)It is put into right semicanal(2)After interior, left semicanal(1)Embedded right semicanal(2), arc part is led into centre(3)It is fixed in arc-extinguishing tube main body.The utility model is simple in construction, reasonable in design, and arc extinguishing ability is stronger, stable and reliable in work.

Description

A kind of separate assembling compresses arc-extinguishing tube
Technical field
It the utility model is related to a kind of component of lightning protection device in transmission line of electricity, more particularly to a kind of separate assembling Compress arc-extinguishing tube.
Background technology
Thunder and lightning is to influence an important factor for power transmission line is safe, occupies the first place of line fault tripping operation for a long time, is air The natural process of activity, it is also uncontrollable so far.But we can be by analyzing normal hair accident, searching thunderbolt rule, Strengthen taking precautions against.As in lofty mountains and steep hills or the shaft tower of summit, the transmission line of electricity in pool or near reservoir, across the mountain ridge or river The shaft tower in river lake and installed in the high shaft tower of grounding resistance and rock column foot and power transmission line etc. be all be subject to thunderbolt destroy emphasis.
Thunder and lightning strike can bring various forms of damages and destruction to electric power facility, and thundercloud discharge can draw in power system Play Lightning Over-voltage, in overhead transmission line common overvoltage have thunderbolt near overhead line by electromagnetic induction on power transmission line Overvoltage and thunder and lightning directly impact the caused overvoltage on wire.Thunderbolt causes overvoltage, and insulator, power transmission line may be made Into damage;Thunderbolt causes insulator arc-over to discharge, and burn can be caused to come off or caused to glass insulator netted to porcelain surface Crackle, dielectric strength is greatly reduced;Thunder and lightning is impacted on power transmission line or lightning conducter, may be caused stranded or even fracture, be made Transmission of electricity work can not be carried out.
Transmission line of electricity lightning protection always is the important content of power department Thunder Protection, and lightning fault is still influence power network One of an important factor for safe.Caused impulse flashover when transmission line of electricity is struck by lightning, causes line insulator flashover, then produces Raw very big power frequency continued flow, damages insulator chain and gold utensil, causes line accident.To this power department typically using in power transmission line Road installs line thunder protection device additional to realize protection.
Electric arc is the free gas of high temperature high conductivity, and electric arc is eliminated, abbreviation arc extinguishing.Arc extinguishing has a variety of methods, It is that main rupturing duty is undertaken using certain gas or liquid mostly.
Lightning protection device be one kind can discharge thunder and lightning or and can discharge power system operation overvoltage energy, protection electrical equipment is exempted from Endangered by instantaneous overvoltage, and can blocks afterflow, avoids the electrical installation for causing system earth short circuit.
3. it is at most valve block lightning protection device to be applied in present transmission line of electricity, there is resistance in this valve block, on the one hand can make thunder Hit that overvoltage is exceeded, heat accumulation, heat is difficult to distribute, and easily causes Explosion of on Arrester, lightning protection failure, on the other hand, takes shelter from the thunder Device lightning protection still needs to strengthen lightning protection effect by the resistance of earth mat drop, lightning conducter interception, heavy insulation etc., and reduces earth mat resistance There is technical bottleneck, earth mat resistance is difficult to be reduced to perfect condition.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, there is provided one kind is simple in construction, reasonable in design, goes out Stronger, the stable and reliable in work separate assembling compression arc-extinguishing tube of arc ability.
To achieve these goals, the utility model employs following technical scheme:
A kind of separate assembling compresses arc-extinguishing tube, including arc part is led in arc-extinguishing tube main body and centre;Described arc-extinguishing tube main body It is made up of left semicanal and right semicanal;The bore at described left semicanal both ends is the same and the diameter of arc part is led less than centre, and left half The pipe external diameter of pipe is less than or equal to the diameter that arc part is led in centre;One end bore of described right semicanal and the bore of left semicanal Equally, other end bore is more than or equal to the diameter that arc part is led in centre;After centre is led arc part be put into right semicanal, left half Pipe is embedded in right semicanal, and centre is led into arc part and is fixed in arc-extinguishing tube main body.
Arc-extinguishing tube main body is made up of two parts in the utility model, and to left semicanal, right semicanal, the middle pipe for leading arc part Footpath or diameter make corresponding limitation, and centre can be led to arc part and be fixed on arc-extinguishing tube body interior, arc part is led not among guarantee Outside can be by air blast discharge pipe so that compression arc-extinguishing tube, which loses, leads arc effect.
Set together with the utility model further explanation, described left semicanal and the direct nested encryptions of right semicanal or respectively Put after internal and external threads using being threaded togather.
The utility model further illustrates that the outer surface of described left semicanal is provided with spacing disk.Spacing disk can be right Right semicanal carry out it is spacing, will the connecting length of left semicanal and right semicanal be defined.
The utility model further illustrates that the outer surface of described arc-extinguishing tube main body is provided with shirt rim.Compression provided with shirt rim For arc-extinguishing tube in the arc extinguishing passage being placed in lightning protection device device, shirt rim can not only play a part of fixed compression arc-extinguishing tube, It can also effectively prevent electric arc along the compression direct flashover of arc extinguishing tube outer surface.
The utility model further illustrates, described centre lead arc part for ball lead arc part or disk with holes lead arc part or The two-sided circular cone of person leads arc part or two-sided nail leads arc part.Arc part is led in centre sharp end points, makes it have superpower draw Arc acts on, and ensures that electric arc is attracted, into inside compression arc-extinguishing tube, the flashover in specified arc extinguishing path.
In the utility model, the material that arc part is led in centre is graphite or metal.
Operation principle of the present utility model:
First stage(Compress temperature-rise effect)
When being struck by lightning, electric arc can be drawn into arc extinguishing path by arc electrode, on the one hand, arc extinguishing path can be by electric arc Elongate, on the other hand, arc-extinguishing tube is made of heat-barrier material, and electric arc is formed in very short time with the cold passage inwall of arc-extinguishing tube Bump contact, arc column periphery cool down immediately, and arc column radius reduces.The reduction of arc column radius both can be outside intake line a large amount of gas Body can increase self-resistance again, and then cause arc column central temperature to steeply rise.
Second stage(Temperature rise directional explosion arc extinguishing effect)
Because heat transfer temperature can be raised quickly, volume will increase rapidly the gas being inhaled into, and be pressed by inner-walls of duct Power, radial direction self-expanding air-flow develop into axial self-expanding air-flow, this axial self-expanding air-flow can by the fragile electric arc of elongation from The mediad pipe ends of arc-extinguishing tube are longitudinally blown out, and at the port of arc-extinguishing tube, electric arc is developed to free state from extreme squeezed state, Directly pipeline is ejected along arc motion direction(Vertical to blow, electric arc is elongated longitudinally, weakened).By in the vertical of whole arc extinguishing path Blow, by constantly longitudinally elongated, the energy for concentrating on arc column axle center originally is discharged and sent out to outside pipeline with the situation sprayed electric arc Open up, the arc energy in arc extinguishing path is gradually reduced, and is finally grounded in arc extinguishing path ends.
Phase III(Electric arc self-gravitation effect, line mutual-ground capacitor suppress arc reignition principle)
The little energy of initial arc storage, electric arc is once truncated in second stage there are micro-fractures, this fracture meeting Full gap is extended to rapidly, and the avalanche effect for electric arc opening occur, arc plasma, which is known from experience, to be buried in oblivion rapidly, is converted into insulation shape State;
After generation fracture, compression pipe arc extinguishing destroys thunder and lightning arc, capacitance voltage equivalent to being connected in parallel on electric arc fracture, with Cause power frequency continued flow there is no path to flow through insulator, can only be discharged by direct-to-ground capacitance, and capacitance voltage can not be mutated, so electric arc Power-frequency voltage from start it is almost nil slowly rise, so the possibility restriked in the absence of micro-fractures by power-frequency voltage flashover.
The advantages of the utility model:
1. simple in construction, reasonable in design, arc extinguishing ability is strong, and work is more reliable and more stable.In the interposition of compression arc-extinguishing tube Install centre and lead arc part, and centre leads arc part and has sharp end points, makes it have superpower striking effect, ensures electric arc It is attracted, into inside compression arc-extinguishing tube, the flashover in specified arc extinguishing path.Arc-extinguishing tube main body is made up of two parts, and To left semicanal, right semicanal, the caliber of arc part is led in centre or diameter makes corresponding limitation, and centre can be led to arc part and be fixed on and gone out Arc pipe body interior, ensure among lead arc part will not be by air blast discharge pipe outside so that compression arc-extinguishing tube lose leads arc effect.
2. full gaseous state passage.Other arc quenching principles are required for arc quenching material, there is spillage of material;For example, baking arc extinguishing passes through Toast gas exhausted material and produce air-flow arc extinguishing, gas exhausted material needs to be lost.And the arc extinguishing energy source of this arc quenching principle is impact electric arc, By certain structure, using impacting the energy of electric arc itself come arc extinguishing, it is not necessary to other materials, noenergy loss.
3. shirt rim is provided with the utility model;When compression arc-extinguishing tube is placed on into the arc extinguishing passage in lightning protection device device, skirt Side can not only play a part of fixed compression arc-extinguishing tube, can also effectively prevent that electric arc is direct along compression arc extinguishing tube outer surface Flashover.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one.
Fig. 2 is Fig. 1 fractionation structural representation.
Reference:
The left semicanals of 1-, the right semicanals of 2-, arc part, the spacing disks of 4- are led among 3-.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1:
As shown in Figure 1-2, arc part 3 is led in a kind of separate assembling compression arc-extinguishing tube, including arc-extinguishing tube main body and centre;It is described Arc-extinguishing tube main body be made up of left semicanal 1 and right semicanal 2;The bore at the described both ends of left semicanal 1 is the same and is led less than centre The diameter of arc part 3, the pipe external diameter of left semicanal 1 are less than the diameter that arc part 3 is led in centre;One end bore of described right semicanal 2 with The bore of left semicanal 1 is the same, and other end bore is equal to the diameter that arc part 3 is led in centre;Right half is put into centre is led into arc part 3 After in pipe 2, left semicanal 1 is embedded in right semicanal 2, and centre is led into arc part 3 is fixed in arc-extinguishing tube main body.Lead arc part in described centre Ball leads arc part.
Embodiment 2:
A kind of separate assembling compresses arc-extinguishing tube, including arc part 3 is led in arc-extinguishing tube main body and centre;Described arc-extinguishing tube main body It is made up of left semicanal 1 and right semicanal 2;The bore at the described both ends of left semicanal 1 is the same and the diameter of arc part 3 is led less than centre, The pipe external diameter of left semicanal 1 is equal to the diameter that arc part 3 is led in centre;In the pipe of one end bore of described right semicanal 2 and left semicanal 1 Footpath is the same, and other end bore is equal to the diameter that arc part 3 is led in centre;After centre is led arc part 3 be put into right semicanal 2, left half Pipe 1 is embedded in right semicanal 2, and centre is led into arc part 3 is fixed in arc-extinguishing tube main body.Lead arc part and lead arc for two-sided circular cone in described centre Part.Described left semicanal 1 and right semicanal 2 are set after internal and external threads using being threaded togather respectively.
Embodiment 3:
A kind of separate assembling compresses arc-extinguishing tube, including arc part 3 is led in arc-extinguishing tube main body and centre;Described arc-extinguishing tube main body It is made up of left semicanal 1 and right semicanal 2;The bore at the described both ends of left semicanal 1 is the same and the diameter of arc part 3 is led less than centre, The pipe external diameter of left semicanal 1 is equal to the diameter that arc part 3 is led in centre;In the pipe of one end bore of described right semicanal 2 and left semicanal 1 Footpath is the same, and other end bore is equal to the diameter that arc part 3 is led in centre;After centre is led arc part 3 be put into right semicanal 2, left half Pipe 1 is embedded in right semicanal 2, and centre is led into arc part 3 is fixed in arc-extinguishing tube main body.Lead arc part and lead arc for two-sided nail in described centre Part.The outer surface of described arc-extinguishing tube main body is provided with shirt rim.

Claims (5)

1. a kind of separate assembling compresses arc-extinguishing tube, including arc part is led in arc-extinguishing tube main body and centre(3);It is characterized in that:It is described Arc-extinguishing tube main body by left semicanal(1)With right semicanal(2)Composition;Described left semicanal(1)The bore at both ends is the same and is less than Lead arc part in centre(3)Diameter, left semicanal(1)Pipe external diameter lead arc part less than or equal to centre(3)Diameter;Described right half Pipe(2)One end bore and left semicanal(1)Bore it is the same, other end bore leads arc part more than or equal to centre(3) Diameter;Arc part is being led into centre(3)It is put into right semicanal(2)After interior, left semicanal(1)Embedded right semicanal(2), arc part is led into centre (3)It is fixed in arc-extinguishing tube main body.
2. separate assembling according to claim 1 compresses arc-extinguishing tube, it is characterised in that:Described left semicanal(1)And the right side Semicanal(2)Direct nested encryptions are set after internal and external threads using being threaded togather together or respectively.
3. separate assembling according to claim 1 or 2 compresses arc-extinguishing tube, it is characterised in that:Described left semicanal(1)'s Outer surface is provided with spacing disk(4).
4. separate assembling according to claim 1 compresses arc-extinguishing tube, it is characterised in that:Outside described arc-extinguishing tube main body Surface is provided with shirt rim.
5. separate assembling according to claim 1 compresses arc-extinguishing tube, it is characterised in that:Arc part is led as circle in described centre Ball leads arc part, and either disk with holes leads arc part or two-sided circular cone leads arc part or two-sided nail leads arc part.
CN201721068105.6U 2017-08-24 2017-08-24 A kind of separate assembling compresses arc-extinguishing tube Withdrawn - After Issue CN207217201U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721068105.6U CN207217201U (en) 2017-08-24 2017-08-24 A kind of separate assembling compresses arc-extinguishing tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721068105.6U CN207217201U (en) 2017-08-24 2017-08-24 A kind of separate assembling compresses arc-extinguishing tube

Publications (1)

Publication Number Publication Date
CN207217201U true CN207217201U (en) 2018-04-10

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CN201721068105.6U Withdrawn - After Issue CN207217201U (en) 2017-08-24 2017-08-24 A kind of separate assembling compresses arc-extinguishing tube

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107481822A (en) * 2017-08-24 2017-12-15 王巨丰 A kind of separate assembling compresses arc-extinguishing tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107481822A (en) * 2017-08-24 2017-12-15 王巨丰 A kind of separate assembling compresses arc-extinguishing tube
CN107481822B (en) * 2017-08-24 2023-11-03 王巨丰 Split combined type compression arc extinguishing pipe

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