CN201707987U - Anti-explosion separating type arrester - Google Patents

Anti-explosion separating type arrester Download PDF

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Publication number
CN201707987U
CN201707987U CN2009202793924U CN200920279392U CN201707987U CN 201707987 U CN201707987 U CN 201707987U CN 2009202793924 U CN2009202793924 U CN 2009202793924U CN 200920279392 U CN200920279392 U CN 200920279392U CN 201707987 U CN201707987 U CN 201707987U
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CN
China
Prior art keywords
insulating cylinder
explosion
bottom electrode
electrode
proof
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Expired - Lifetime
Application number
CN2009202793924U
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Chinese (zh)
Inventor
赵雪峰
向军
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GUANGDONG AMPLE TECHNOLOGY CO., LTD.
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ANDIPU TECH (SHENZHEN) CO Ltd
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Priority to CN2009202793924U priority Critical patent/CN201707987U/en
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Abstract

The utility model relates to an anti-explosion separating type arrester which includes a rubber coat, an insulating cylinder coated inside by the rubber coat, as well as an upper electrode, a valve plate, a lower electrode and an earthing bolt which are arranged up and down in sequence and are connected electrically; wherein the upper electrode and the lower electrode are respectively fixed at the upper end and the lower end of the insulating cylinder; the valve plate is arranged in the insulating cylinder; the two ends of the valve plate are respectively contacted with the upper electrode and the lower electrode; the earthing bolt is connected with the lower end of the lower electrode; a clearance is arranged between the outer wall of the valve plate and the inner wall of the insulating cylinder; the outer wall of the lower electrode and the inner wall of the insulating cylinder are fixedly connected through a weak structure which can be cracked by force. The anti-explosion separating type arrester and a core body not only can separate reliably when the valve plate of the arrester is aged, and can reliably separate from the preset weak part due to the shearing effect generated by a ground electrode in case of being impacted by strong thunder, thereby guaranteeing the using safety and reliability thereof.

Description

Explosion-proof separation type lightning arrester
Technical field
The utility model relates to arrester device, especially relates to the explosion-proof separation type lightning arrester of a kind of 6～35kV plug.
Background technology
Fast development along with the development of the national economy and industrial and agricultural production; electric power system requires more and more higher to the various overvoltage protections of equipment; relate in particular to the overvoltage protection of generalized information system (Cubicle Gas-Insulated Switchgear); wherein a major reason is in order to prevent because the power outage that transmission line of lightning strike and power transmission and transforming equipment cause, thus avoid or reduce to produce, life impacts.
Lightning rod is to be usually used in discharging thunder and lightning or to hold concurrently discharging the electrical installation of power system operation overvoltage energy, can protect electric power system to avoid instantaneous overvoltage harm, can block afterflow again, unlikelyly causes the system earth short circuit.The tradition lightning arrester is just at the silica gel outer common core body of packing into, generally there is not explosion-proof disengaging function, die of old age or comminuted blast takes place or cause that the problem of dead ground fault takes place in electric power system because of certain factor generation flashover because of aging in view of preventing lightning arrester, also have on some lightning arrester and add disconnector, lightning arrester as Chinese patent CN92213768 adopts a kind of hot melten type disconnector, this kind disconnector is passed to low-melting alloy to heat by the resistance heating on the lightning arrester and is made alloy melting and play the disengaging effect, yet, this kind disconnector response time is long, in case lightning arrester moment is struck by lightning or other factors causes active component or all puncture just powerless, and only rely on and reach certain temperature and could act on, therefore, this kind lightning arrester is reliable inadequately, can not fundamentally solve the problem that the lightning arrester internal pressure discharges.
The utility model content
The technical problem that the utility model mainly solves is, at the prior art above shortcomings, provides a kind of explosion-proof separation type lightning arrester that can reliably break away from, and uses safer reliable.
The technical scheme that its technical problem that solves the utility model adopts provides a kind of explosion-proof separation type lightning arrester, comprise rubber sleeve, be coated on interior insulating cylinder and top electrode, valve block, bottom electrode and the earth stud that sets gradually and electrically connect from top to bottom by this rubber sleeve, wherein, this top electrode and bottom electrode are individually fixed in this insulating cylinder two ends up and down; This valve block is positioned at this insulating cylinder, and its two ends contact with this top electrode, bottom electrode respectively; This earth stud is connected to this bottom electrode lower end; Be provided with the gap between this valve block outer wall and this insulating cylinder inwall, this bottom electrode outer wall is fixedlyed connected by the weak structure of force-applied fracture with this insulating cylinder inwall.
This bottom electrode comprises explosion-proof portion, this explosion-proof subordinate's end offers the screw that cooperates with this earth stud, this explosion-proof upper end is provided with the first ccontaining cavity, and this first ccontaining cavity is built-in with can conduct this valve block heat and can react under preset temperature and produces a large amount of gases and will this explosion-proof directed breakage and chemical material that this earth stud is come off.
This bottom electrode outer wall and this insulating cylinder inwall spin by thread.
This bottom electrode and this insulating cylinder partly spin, the outer wall of the bottom of this bottom electrode convexes with threaded first connecting portion of a plurality of equally distributed lateral surfaces along side face, the madial wall of this insulating cylinder is provided with threaded second connecting portion of lateral surface to position male that should first connecting portion, and this bottom electrode is fixedlyed connected with the threaded of this second connecting portion by this first connecting portion with this insulating cylinder.
The top of this bottom electrode is littler than the bottom, and is formed with the spatial accommodation that is connected with described gap between this external wall of upper portion and this insulating cylinder inwall.
Offer a plurality of second ccontaining cavitys that are used to bury underground described chemical material on the lower surface of this bottom electrode, these a plurality of second containing cavity bodies are positioned at below this spatial accommodation and the center, lower surface that is uniformly distributed in this bottom electrode is on the same circumference in the center of circle.
This chemical material is nitrocellulose or is the miniature explosive of base-material with the nitrocellulose.
This top electrode and bottom electrode seal the both ends open up and down of this insulating cylinder respectively, and the junction, lower surface of this bottom electrode and this insulating cylinder is provided with hermetically-sealed construction, the sealing structure comprise this bottom electrode with the formed seal groove in junction, lower surface of this insulating cylinder, be provided with sealing ring in the sealing groove.
This top electrode lower end offers groove, is provided with the compression spring in this groove, and this both ends of the spring is this channel bottom of butt and this valve block upper end respectively.
This insulating cylinder is an epoxy glass tube; This top electrode and bottom electrode are the aluminium electrode; This rubber sleeve is a silica gel outer, and its periphery is to be distributed with umbrella shape to stretch out the shape of structure or periphery be that level and smooth straight tube is planar; This valve block is a zinc oxide valve plate.
Explosion-proof separation type lightning arrester of the present utility model is owing to be formed with explosion-proof portion between this first ccontaining cavity and screw, when valve block wears out, leakage current increases, and causes the valve block adstante febre, and the chemical material that places the first ccontaining cavity is under preset temperature, chemical reaction takes place, moment produces a large amount of gases, makes explosion-proof directed breakage, and earth stud comes off, thereby make this lightning arrester reliably break away from electric power system, out of service; When lightning arrester is subjected to strong thunder and causes insulating cylinder and valve block gap that flashover takes place, because the bottom electrode outer wall adopts weak structure example such as thread to cooperate with this insulating cylinder madial wall, when the gases at high pressure that produced pass through described gap, weak structure is produced shear action, make weak structural break, bottom electrode and earth stud are directed together to break away from, and makes gases at high pressure release, prevent comminuted blast and permanent earth fault, guarantee that electric power system normally moves.This shows that disengaging mode of the present utility model is more reliable, guaranteed the fail safe and the reliability of its use.
Description of drawings
Fig. 1 is the generalized section of explosion-proof separation type lightning arrester first preferred embodiment of the utility model;
Fig. 2 is the generalized section of explosion-proof separation type lightning arrester second preferred embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples explosion-proof separation type lightning arrester of the present utility model is described in further detail.
As shown in Figure 1, it is the generalized section of explosion-proof separation type lightning arrester first preferred embodiment of the utility model, and explosion-proof separation type lightning arrester 100 comprises rubber sleeve 1, insulating cylinder 2, top electrode 32, zinc oxide valve plate 34, bottom electrode 36, a plurality of compression spring 4, chemical material 5 and earth stud 6.
Overcoat 1 adopts the silicone insulation material to make, and is hollow cylindrical.The peripheral distribution of overcoat 1 has the umbrella shape that improves external flashover voltage to stretch out structure, and the end face central authorities of overcoat 1 offer one and insert hole 12.
Insulating cylinder 2 is coated in it by one-body molded by overcoat 1, and this insulating cylinder 2 adopts the epoxy glass to cast.
Top electrode 32, valve block 34, bottom electrode 36 and earth stud 6 set gradually from top to bottom, and electrically connect successively, wherein, top electrode 32, valve block 34 and bottom electrode 36 are located in the insulating cylinder 2, top electrode 32 and bottom electrode 36 are separately fixed at the two ends up and down of insulating cylinder 2, and openings at two ends sealing up and down, and bottom electrode 36 is formed with seal groove 361 in the junction, lower surface with insulating cylinder 2, be used to place sealing ring 65 to form hermetically-sealed construction, thereby guarantee the sealing of insulating cylinder 2 better, with the drying of guaranteeing valve block 34 and the gas cut erosion of not making moist.
Top electrode 32 is the aluminium electrode, and its upper surface offers the screw that is communicated with the access hole 12 of overcoat 1, so that be connected with the conducting element (figure does not show) of external power system; Its lower surface offers with the spring 4 that compresses that spring 4 quantity are identical, voltage supply is contracted and is plugged at wherein groove 324 one by one, and the center that these a plurality of grooves 324 are evenly distributed on the lower surface of top electrode 32 is on the same circumference in the center of circle.
Each compresses spring 4 and is inserted in the respective grooves 324, and two ends press on groove 324 bottoms and valve block 34 upper ends respectively, to guarantee that valve block 34 is in Shi Yineng and the bottom electrode 36 maintenance excellent contact of expanding with heat and contract with cold.
Valve block 34 is cylindric, is located in the insulating cylinder 2, is reserved with gap 70 between its outer wall and insulating cylinder 2 inwalls.
Bottom electrode 36 is the aluminium electrode, and its top is littler than the bottom, so be formed with bigger spatial accommodation 75 between the inwall of the outer wall on top and insulating cylinder 2, this spatial accommodation 75 is connected with gap 70.The outer wall of the bottom of bottom electrode 36 convexes with a plurality of even distributions and threaded first connecting portion 362 of lateral surface along side face, the madial wall correspondence position of insulating cylinder 2 convexes with and threaded second connecting portion 22 of the lateral surface of first connecting portion, 362 threaded, promptly first connecting portion 362 is connected by thread 8 with second connecting portion 22, makes the junction become weak structure.
Bottom electrode 36 upper surface middle positions also offer first a ccontaining cavity 364 that is used to place chemical material 5, the lower surface offers the ground connection screw 366 that is connected with earth stud 6 to position (being the middle position of lower surface) that should the first ccontaining cavity 364, thereby has formed thin explosion-proof 368 between the first ccontaining cavity 364 and ground connection screw 366.Chemical material 5 can react the material that produces a large amount of gases for being heated, and (molecular formula is C as nitrocellulose 12H 17(ONO 2) 3O 7～C 12H 14(ONO) 6O 7) or be the miniature explosive etc. of base-material with the nitrocellulose, other materials and composition that this miniature explosive is commonly used have been well known to those of ordinary skill in the art, do not repeat them here.Explosion-proof 368 thickness according to the gases at high pressure avulsion energy desiring to bear design.
Earth stud 6 is positioned at bottom electrode 36 belows, is screw-coupled in the ground connection screw 366 of bottom electrode 36, is used for ground connection.
The explosion-proof separation type lightning arrester of the utility model is when using, and the conducting element of external power system is connected to top electrode 32 by the access hole 12 of overcoat 1 and the screw of top electrode 32, bottom electrode 36 ground connection.If valve block 34 generations are aging, leakage current increases, and causes valve block 34 heatings, and conducts heat to chemical material 5.Chemical reaction takes place in chemical material 5 when heating reaches preset temperature, moment produces a large amount of gases, it is directed damaged under this gas pressure to make explosion-proof 368, thereby earth stud 6 is come off, lightning arrester 100 breaks away from electric power system, out of service, prevent to produce the fault of comminuted blast or permanent earth.
When strong thunder impacts, with 70 places, valve block 34 gaps flashover takes place at insulating cylinder 2, the gases at high pressure that produced are by gap 70 and spatial accommodation 75, to screw the thread 8 generation shear actions of part on the bottom electrode 36 with insulating cylinder 2, make thread 8 fractures, make bottom electrode 36 with 6 directed disengagings of earth stud, and gases at high pressure are released, prevent to produce the fault of comminuted blast or permanent earth, guaranteed the safety of system equipment.
This shows, the explosion-proof separation type lightning arrester of the utility model not only can reliably break away from electric power system when valve block 34 wears out, and impact and also can reliably break away from electric power system being subjected to strong thunder, comminuted blast and permanent earth fault can not take place, guarantee that electric power system normally moves, compared with prior art, this kind disengaging mode is more reliable.
Be appreciated that above-mentioned top electrode 32 can be provided with one or more grooves 324, compression spring 4 also correspondence is set to identical quantity.When the quantity of groove 324 is one, preferably be located at center, top electrode 32 lower surface, when the quantity of groove 324 during greater than one, be preferably on the same circumference that is evenly distributed on top electrode 32 lower surfaces, perhaps, one is positioned at the center, lower surface, and remaining is evenly distributed on the same circumferential position (quantity of groove 324 greater than two time) of this lower surface, compresses power so that make two electrodes 32,36 and 34 of valve blocks be subjected to balanced elasticity.
In addition, also can offer the second ccontaining cavity 369 that a plurality of (being preferably three) are used to bury underground chemical material 5 on bottom electrode 36 lower surfaces, this second ccontaining cavity 369 is positioned at spatial accommodation 75 belows, and this a plurality of second ccontaining cavity 369 to be evenly distributed on this center, lower surface be on the same circumference in the center of circle.When bottom electrode 36 is heated, chemical material 5 in the second ccontaining cavity 369 reacts and produces a large amount of gases, make bottom electrode 36 parts of the second ccontaining cavity, 369 tops that directed breakage take place, and bottom electrode 36 is come off, thereby can make lightning arrester 100 reach the effect of dual fail-safe.
In addition, also can be shown in explosion-proof separation type lightning arrester second preferred embodiment of the utility model among Fig. 2, it is that level and smooth straight tube is planar that the silastic material 1a of explosion-proof separation type lightning arrester 100a is arranged to periphery, at this moment, this explosion-proof separation type lightning arrester can be used as core body and uses, can realize above-mentioned beneficial effect of the present utility model equally: not only when valve block is aging, can reliably break away from electric power system, and impact and also can reliably break away from electric power system being subjected to strong thunder, comminuted blast and permanent earth fault can not take place, guarantee that electric power system normally moves.In addition, the profile of above-mentioned silastic material also can be designed to be exclusively used in the shape of cable joint inside.
The above only is preferred embodiment of the present utility model; be not in order to limit practical range of the present utility model; therefore all other do not break away from the equivalence of being finished under the spirit that the utility model discloses and changes or modify, and all should be included in the protection range of the present utility model.

Claims (10)

1. explosion-proof separation type lightning arrester, comprise rubber sleeve, be coated on interior insulating cylinder and top electrode, valve block, bottom electrode and the earth stud that sets gradually and electrically connect from top to bottom by this rubber sleeve, wherein, this top electrode and bottom electrode are individually fixed in this insulating cylinder two ends up and down; This valve block is positioned at this insulating cylinder, and its two ends contact with this top electrode, bottom electrode respectively; This earth stud is connected to this bottom electrode lower end; It is characterized in that: be provided with the gap between this valve block outer wall and this insulating cylinder inwall, this bottom electrode outer wall is fixedlyed connected by the weak structure of force-applied fracture with this insulating cylinder inwall.
2. explosion-proof separation type lightning arrester as claimed in claim 1, it is characterized in that: this bottom electrode comprises explosion-proof portion, this explosion-proof subordinate's end offers the screw that cooperates with this earth stud, this explosion-proof upper end is provided with the first ccontaining cavity, and this first ccontaining cavity is built-in with can conduct this valve block heat and can react under preset temperature and produces a large amount of gases and will this explosion-proof directed breakage and chemical material that this earth stud is come off.
3. explosion-proof separation type lightning arrester as claimed in claim 1 or 2 is characterized in that: this bottom electrode outer wall and this insulating cylinder inwall spin by thread.
4. explosion-proof separation type lightning arrester as claimed in claim 3, it is characterized in that: this bottom electrode and this insulating cylinder partly spin, the outer wall of the bottom of this bottom electrode convexes with threaded first connecting portion of a plurality of equally distributed lateral surfaces along side face, the madial wall of this insulating cylinder is provided with threaded second connecting portion of lateral surface to position male that should first connecting portion, and this bottom electrode is fixedlyed connected with the threaded of this second connecting portion by this first connecting portion with this insulating cylinder.
5. explosion-proof separation type lightning arrester as claimed in claim 2 is characterized in that: the top of this bottom electrode is littler than the bottom, and is formed with the spatial accommodation that is connected with described gap between this external wall of upper portion and this insulating cylinder inwall.
6. explosion-proof separation type lightning arrester as claimed in claim 5, it is characterized in that: offer a plurality of second ccontaining cavitys that are used to bury underground described chemical material on the lower surface of this bottom electrode, these a plurality of second containing cavity bodies are positioned at below this spatial accommodation and the center, lower surface that is uniformly distributed in this bottom electrode is on the same circumference in the center of circle.
7. as claim 2 or 6 described explosion-proof separation type lightning arresters, it is characterized in that: this chemical material is nitrocellulose or miniature explosive.
8. explosion-proof separation type lightning arrester as claimed in claim 1, it is characterized in that: this top electrode and bottom electrode seal the both ends open up and down of this insulating cylinder respectively, and the junction, lower surface of this bottom electrode and this insulating cylinder is provided with hermetically-sealed construction, the sealing structure comprise this bottom electrode with the formed seal groove in junction, lower surface of this insulating cylinder, be provided with sealing ring in the sealing groove.
9. explosion-proof separation type lightning arrester as claimed in claim 1 or 2 is characterized in that: this top electrode lower end offers groove, is provided with the compression spring in this groove, and this both ends of the spring is this channel bottom of butt and this valve block upper end respectively.
10. explosion-proof separation type lightning arrester as claimed in claim 1 or 2 is characterized in that: this insulating cylinder is an epoxy glass tube; This top electrode and bottom electrode are the aluminium electrode; This rubber sleeve is a silica gel outer, and its periphery is to be distributed with umbrella shape to stretch out the shape of structure or periphery be that level and smooth straight tube is planar; This valve block is a zinc oxide valve plate.
CN2009202793924U 2009-11-17 2009-11-17 Anti-explosion separating type arrester Expired - Lifetime CN201707987U (en)

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Application Number Priority Date Filing Date Title
CN2009202793924U CN201707987U (en) 2009-11-17 2009-11-17 Anti-explosion separating type arrester

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108428526A (en) * 2018-04-13 2018-08-21 广东安迪普科技有限公司 A kind of lightning arrester core body and arrester
CN108594092A (en) * 2018-05-09 2018-09-28 国网河南省电力公司电力科学研究院 A kind of metal oxide arrester defects simulation experimental rig
CN109903942A (en) * 2019-03-07 2019-06-18 国网新疆电力有限公司检修公司 A kind of metal zinc oxide lightning arrester bursting diaphragm of ripple struction
CN110459374A (en) * 2019-04-28 2019-11-15 库柏电子科技(上海)有限公司 Explosion-proof lightning arrester
CN112735711A (en) * 2020-12-21 2021-04-30 西安西电避雷器有限责任公司 Lightning arrester assembly and assembling process thereof
CN114400119A (en) * 2021-12-17 2022-04-26 南阳金牛电气有限公司 Separable gapless lightning arrester and manufacturing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108428526A (en) * 2018-04-13 2018-08-21 广东安迪普科技有限公司 A kind of lightning arrester core body and arrester
CN108594092A (en) * 2018-05-09 2018-09-28 国网河南省电力公司电力科学研究院 A kind of metal oxide arrester defects simulation experimental rig
CN109903942A (en) * 2019-03-07 2019-06-18 国网新疆电力有限公司检修公司 A kind of metal zinc oxide lightning arrester bursting diaphragm of ripple struction
CN110459374A (en) * 2019-04-28 2019-11-15 库柏电子科技(上海)有限公司 Explosion-proof lightning arrester
CN112735711A (en) * 2020-12-21 2021-04-30 西安西电避雷器有限责任公司 Lightning arrester assembly and assembling process thereof
CN114400119A (en) * 2021-12-17 2022-04-26 南阳金牛电气有限公司 Separable gapless lightning arrester and manufacturing method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: GUANGDONG AMPLE TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: AMPLE TECHNOLOGY (SHENZHEN) CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: Henggang Baoan District manhole town Shenzhen city Guangdong province 518125 Xinqiao Furong Industrial Zone under the XinDa Zhongheng Industrial Park building D

Patentee after: GUANGDONG AMPLE TECHNOLOGY CO., LTD.

Address before: Henggang Baoan District manhole town Shenzhen city Guangdong province 518125 Xinqiao Furong Industrial Zone under the XinDa Zhongheng Industrial Park building D

Patentee before: Andipu Tech (Shenzhen) Co Ltd

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110112