CN204361477U - A kind of count enable is two blocks lightning protection device - Google Patents
A kind of count enable is two blocks lightning protection device Download PDFInfo
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- CN204361477U CN204361477U CN201520094186.1U CN201520094186U CN204361477U CN 204361477 U CN204361477 U CN 204361477U CN 201520094186 U CN201520094186 U CN 201520094186U CN 204361477 U CN204361477 U CN 204361477U
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Abstract
The utility model discloses a kind of count enable pair and block lightning protection device, comprise lightning protection device main body, arc extinguishing gas ball sum counter; Lightning protection device body interior is provided with storage magazine and multiport arc-extinguishing tube; Be provided with the track for laterally discharging arc extinguishing gas ball in storage magazine, and be provided with preparation track in the bottom of track; The end of preparation track is provided with gas ball trigger bit; The both sides of gas ball trigger bit are respectively equipped with the trigger electrode that to be connected with the induction coil for gathering the lightening pulse signal of telecommunication; Multiport arc-extinguishing tube is provided with several outlets, and is provided with in the inside of multiport arc-extinguishing tube and leads arc ball; The external arc electrode in one end of multiport arc-extinguishing tube, the other end points to counting press points.The utility model structure is simple, gas ball memory space large, gas ball can automatically glide under self gravitation effect advances smooth trigger bit, and reliable in action, working stability, arc quenching effect are good.
Description
Technical field
The utility model relates to a kind of lightning protection arc quenching protection device, has been specifically related to a kind of count enable pair and has blocked lightning protection device.
Background technology
Transmission line lightning protection always is the important content of power department Thunder Protection, and lightning fault remains one of key factor affecting power grid security.The impulse flashover that transmission line causes when there is thunderbolt, causes line insulator flashover, then produces very large power frequency continued flow, damages insulator string and gold utensil, causes line accident.Traditional " blocking type " lightning protection mode, due to its limitation, can not solve problem of lightning at all.Therefore power department generally adopts and installs portable protective gaps in parallel or leakage conductor additional to realize protective wire at transmission line.But in actual motion, portable protective gaps in parallel and leakage conductor have its obvious defect as follows:
First, when thunderbolt occurs transmission line, portable protective gaps in parallel preferentially punctures because being struck by lightning the overvoltage that causes, lightning current is leaked into the earth, thus plays the effect of protection transmission line and electric equipment.But there is no arc extinguishing ability due to portable protective gaps in parallel; the power frequency continued flow caused after can not extinguishing insulator string flashover; electric arc is long-time calcination between portable protective gaps; insulator string will be caused to damage; time serious; transmission line may be caused to break, and electric arc can cause ablation to electrode and reduce its protective value simultaneously.Final dependence circuit breaker carrys out extinguish arcs to realize protection transmission line and equipment, is to sacrifice the way that " trip-out rate " and " power supply reliability " exchanges " low rate of failure " for.
Secondly, leakage conductor is expensive, use, maintenance cost is high, Leakage Current is large, and useful life is short, changes frequent, and the zinc oxide module of leakage conductor under lightning impulse owing to there is obvious kelvin effect, easily explode under big current, cause circuit chromic trouble, be unfavorable for electrical network economy, safety, stable operation.
Therefore, people start to study for these problems, as the patent of inventor's earlier application, China Patent No. is 2011201046273 disclose a kind of 10 ~ 35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus being applicable to 10 ~ 35kV overhead transmission line, this device is installed in parallel in line insulator string two ends, flashover voltage between portable protective gaps is less than protected insulator string, thus had precedence over protected insulator string when transmission line is struck by lightning and puncture, during disruptive discharge, the automatic induced lightening current signal of lightening pulse harvester also triggers high velocity jet gas generating unit, produce high velocity jet air-flow instantaneously to afterflow electric arc longitudinally intense impact in constraint space, be cooled to extinguishing.For another example Chinese Patent Application No. is 2012103715793 disclose a kind of without afterflow electric arc lightning protection inter space protective device, comprises ground side arc-control device, is installed on the ground side gold utensil at line insulator string two ends and side of wire gold utensil respectively by fixture; Ground side arc-control device comprises lightening pulse harvester, insulated enclosure housing, gas generating unit and arcing chamber; The other end of ground side gold utensil is provided with connection tubule; Ground side arc-control device also comprises the tubular earth electrode and L shape earth electrode that use non-metallic conducting material to make, connection is inlayed by the connection tubule on Z-shaped connection gold utensil and ground side gold utensil in one end of L shape earth electrode, the other end of L shape earth electrode through lightening pulse harvester, and is connected with tubular earth electrode; The tubular earth electrode one end of non-metallic conducting material is embedded in arcing chamber, and the other end is connected with insulated enclosure housing.These patents have got good solution effect for the problems referred to above; but the arc-control device work times in these protective devices is limited; be mounted in the normal words sent out area or repeat the more incident coastal area of thunder of thunderbolt; need to change frequently arc-control device; considerably increase maintenance cost; if and increase the work times of arc-control device, the structural design of installing its arc extinguishing storehouse will inevitably increase the weight of arc-control device, is so also unfavorable for Long-Time Service.Therefore inventor is for the feature of the multiple thunder in minefield; lightning protection inter space protective device is improved again; while increasing rupturing duty number of times, alleviate the weight of protective device as far as possible, develop a kind of lightning arrester that can use for a long time, to meet the demand on market.
Summary of the invention
The purpose of this utility model is for deficiency of the prior art, provide that a kind of structure is simple, gas ball memory space large, gas ball automatically can glide the arc extinguishings to be triggered such as advance under self gravitation effect, and in multiple thunder gap very in short-term, a rear arc extinguishing gas ball fail pop into place time, can also be undertaken by auxiliary multiport arc-extinguishing tube that the count enable of arc extinguishing is two blocks lightning protection device.
To achieve these goals, the utility model have employed following technical scheme:
A kind of count enable is two blocks lightning protection device, comprises lightning protection device main body, arc extinguishing gas ball and is fixedly mounted on the counter of lightning protection device body outer surface; Wherein, described lightning protection device body interior is provided with storage magazine and multiport arc-extinguishing tube; Be provided with the track for laterally discharging arc extinguishing gas ball in described storage magazine, and be provided with preparation track in the bottom of track; Described preparation track is provided with the counting press points be connected with the driving shaft of counter; The end of described preparation track is provided with gas ball trigger bit; The both sides of described gas ball trigger bit are respectively equipped with trigger electrode; Described trigger electrode is connected with the induction coil for gathering the lightening pulse signal of telecommunication; Described multiport arc-extinguishing tube is provided with the outlet that several stretch out lightning protection device body outer surface, and is provided with in the inside of multiport arc-extinguishing tube and leads arc ball; Described lead arc ball be arranged at outlet two side positions and the corner of multiport arc-extinguishing tube; The external arc electrode in one end of described multiport arc-extinguishing tube, the other end points to counting press points.
In the utility model, in lightning protection device main body, be incessantly provided with storage magazine, and be provided with multiport arc-extinguishing tube; In storage magazine, track is set, again arc extinguishing gas ball transverse row is put in orbit, so not only greatly can add the memory space of arc extinguishing gas ball in storage magazine, and be convenient to the preparation track that arc extinguishing gas ball tumbles rail base, enter in gas ball trigger bit smoothly; And trigger electrode is separately positioned on the both sides of gas ball trigger bit, (trigger electrode is at the top of trigger bit to optimize former structure, another is in side), convenient like this arc extinguishing gas ball enters trigger bit, and arc extinguishing gas ball and trigger electrode I can be made to form more reliable contacts be connected.In addition, set up multiport arc-extinguishing tube in lightning protection device body interior, better can assist and carry out arc extinguishing, the interval time occurred as partial multi thunder is very short, when last arc extinguishing gas ball action triggers, then one fail timely in place time, multiport arc-extinguishing tube also can play the effect of arc extinguishing lightning protection; Because multiport arc-extinguishing tube not only extends arc extinguishing path, slenderizing electric arc, and possesses multiple outlet breakpoint, electric arc more easily extinguished and not resume combustion.Simultaneously, in the utility model, be also provided with counter, can count the trigger action of storage magazine and multiport arc-extinguishing tube, attendant can be allowed so intuitively to know the arc extinguishing gas ball surplus of storing up in magazine, be convenient to carry out in advance the preparation of more changing device or supplementary arc extinguishing gas ball.Preparation track arranges counting press points, and when there being arc extinguishing gas ball rolling landing, arc extinguishing gas ball is through counting press points, and the pointer of digit counter is walked about lattice, thus counts once.
As the utility model further instruction, above-described arc extinguishing gas ball is provided with shell; Described shell is provided with the breach of two symmetric designs also in inverted V-shaped, is provided with connecting electrode at the top of breach; When arc extinguishing gas ball is in gas ball trigger bit, the connecting electrode of arc extinguishing gas ball and the trigger electrode of gas ball trigger bit carry out reliable contacts, namely, when described arc extinguishing gas ball enters gas ball trigger bit from preparation track, breach on the shell of the arc extinguishing gas ball electrode that is triggered is held, under the effect of arc extinguishing gas ball self gravitation, arc extinguishing gas ball vertically enters gas ball trigger bit by laterally gliding to transferring to, and the connecting electrode of arc extinguishing gas ball and the trigger electrode of gas ball trigger bit carry out reliable contacts.The breach of inverted V-shaped can allow arc extinguishing gas ball when the electrode that is triggered is held, and rotates freely, moves down further, until trigger electrode holds the top of breach, forms reliable contacts be connected with the connecting electrode of arc extinguishing gas ball.
As the utility model further instruction, above-described track is tilting track or vertical track, and is provided with more than two row; A mobilizable baffle plate is being provided with between two between track.Tilting track or vertical track can allow arc extinguishing gas ball utilize self gravitation can automatically to glide reach.And mobilizable baffle plate is set, when on first row track also have arc extinguishing gas ball time, due to the barrier effect of arc extinguishing gas ball, baffle plate is stiff, thus block second, third ... the arc extinguishing gas ball of row; When last arc extinguishing gas ball of first row track enters preparation track, the baffle plate of first row track and secondary series track, under the Action of Gravity Field of the arc extinguishing gas ball on secondary series track, be pushed on one side, thus secondary series track is connected with preparation track, arc extinguishing gas ball on secondary series track starts to enter preparation track successively, waits for trigger action; The arc extinguishing gas ball of the track of rear sequence is like this equally.
As the utility model further instruction, above-described multiport arc-extinguishing tube is formed primarily of several thin ceramic tubes.
As the utility model further instruction, above-described lightning protection device main body is provided with bearing bar, and one end of described bearing bar extends to lightning protection device body interior, and is provided with coulomb dish at bearing bar end.By bearing bar, on one end that lightning protection device main body can be fixedly mounted on insulator string or cross-arm.Arc electrode is through coulomb dish, and namely arc electrode is not directly connected in lightning protection device body interior with coulomb dish.
Operation principle of the present utility model:
Arrange some row tracks in the two storage magazine blocking lightning protection device of count enable of the present utility model, when the arc extinguishing gas ball of a row track is finished, the gas ball of another row track then uses; First gets angry ball by Action of Gravity Field, and upset enters gas ball trigger bit, waits to be triggered.When lightening pulse is through coil, coil-induced current trigger arc extinguishing gas ball, produce huge air-flow and block electric arc, arc temperature is reduced, arc energy can not get abundant supply, arc extinction.The mode that arc extinguishing gas ball below arrives gas ball trigger bit by first arc extinguishing gas ball equally puts in place, waits for and being struck by lightning next time, carry out trigger action.In addition, auxiliary extinction of arc structure is also provided with in lightning protection device main body---multiport arc-extinguishing tube, multiport arc-extinguishing tube not only extends arc extinguishing path, slenderizing electric arc, suppresses the development of electric arc, and possesses multiple outlet breakpoint, and electric arc more easily extinguished and not resume combustion; And ensure that this lightning protection device also can carry out rupturing duty in multiple thunderbolt interval time very in short-term, improve the reliability of lightning protection device.
Advantage of the present utility model:
1. structure is simple, and the memory space of arc extinguishing gas ball is many.Lightning protection device body interior of the present utility model arranges tilting or vertical track, again by the laterally discharge of arc extinguishing gas ball, not only when lightning arrester main body size is constant, the memory space adding arc extinguishing gas ball is many, and utilize the self gravitation of arc extinguishing gas ball, slide to gas ball trigger bit under can realizing arc extinguishing gas ball, do not need to increase actuating unit in addition again, greatly optimize the structure of lightning protection device body interior.
2. reliable in action, working stability, arc quenching effect are good.Improve the external structure of arc extinguishing gas ball, namely arrange the breach of V on its housing, and the top of breach arranges connecting electrode, then the trigger electrode of gas ball trigger bit is arranged on both sides; So not only make arc extinguishing gas ball move down smoothly, turn to and enter gas ball trigger bit, connecting electrode and trigger electrode form reliable contacts, and when arc extinguishing gas ball does not also start trigger action, trigger electrode can hold arc extinguishing gas ball, prevents it from dropping.
3. set up multiport arc-extinguishing tube, coordinate arc extinguishing gas ball action arc extinguishing together; Can not only extinguish arcs faster, and the effect of protecting multiple thunder can be reached.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model one embodiment.
Fig. 2 is the schematic diagram of multiport arc-extinguishing tube in the utility model one embodiment.
Fig. 3 is the schematic diagram storing up magazine in the utility model one embodiment.
Fig. 4 stores up the 3rd row track arc extinguishing gas ball in magazine to start to enter the schematic diagram of gas ball trigger bit in the utility model one embodiment.
Fig. 5 is the schematic diagram of arc extinguishing gas ball in the utility model one embodiment.
Reference numeral: 1-lightning protection device main body, 2-multiport arc-extinguishing tube, 3-counter, 4-exports, and 5-leads arc ball, 6-track, 7-arc extinguishing gas ball, 8-baffle plate, 9-gas ball trigger bit, and 10-trigger electrode, 11-counts press points, 12-shell, 13-connecting electrode.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As Figure 1-5, a kind of count enable is two blocks lightning protection device, comprises lightning protection device main body 1, arc extinguishing gas ball 7 and is fixedly mounted on the counter 3 of lightning protection device main body 1 outer surface; Wherein, described lightning protection device main body 1 inside is provided with storage magazine and multiport arc-extinguishing tube 2; Be provided with the track 6 for laterally discharging arc extinguishing gas ball 7 in described storage magazine, and be provided with preparation track in the bottom of track 6; Described preparation track is provided with the counting press points 11 be connected with the driving shaft of counter 3; The end of described preparation track is provided with gas ball trigger bit 9; The both sides of described gas ball trigger bit 9 are respectively equipped with trigger electrode 10; Described trigger electrode 10 is connected with the induction coil for gathering the lightening pulse signal of telecommunication; Described multiport arc-extinguishing tube 2 is provided with the outlet 4 that several stretch out lightning protection device main body 1 outer surface, and is provided with in the inside of multiport arc-extinguishing tube 2 and leads arc ball 5; Described lead arc ball 5 be arranged at outlet 4 two side positions and the corner of multiport arc-extinguishing tube 2; The external arc electrode in one end of described multiport arc-extinguishing tube 2, the other end points to counting press points 11.
Described arc extinguishing gas ball 7 is provided with shell 12; Described shell 12 is provided with the breach of two symmetric designs also in inverted V-shaped, is provided with connecting electrode 13 at the top of breach; When arc extinguishing gas ball 7 is in gas ball trigger bit 9, the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 7, namely, when described arc extinguishing gas ball 7 enters gas ball trigger bit 9 from preparation track, breach on the shell 12 of arc extinguishing gas ball 7 electrode 10 that is triggered is held, under the effect of arc extinguishing gas ball 7 self gravitation, arc extinguishing gas ball 7 vertically enters gas ball trigger bit 9 by laterally gliding to transferring to, and the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 9.
Described track is tilting track, and is provided with three row; A mobilizable baffle plate 8 is being provided with between two between track.Described multiport arc-extinguishing tube 2 is formed primarily of several thin ceramic tubes.Described lightning protection device main body 1 is provided with bearing bar, and one end of described bearing bar extends to lightning protection device main body 1 inside, and is provided with coulomb dish at bearing bar end.
Embodiment 2:
A kind of count enable is two blocks lightning protection device, comprises lightning protection device main body 1, arc extinguishing gas ball 7 and is fixedly mounted on the counter 3 of lightning protection device main body 1 outer surface; Wherein, described lightning protection device main body 1 inside is provided with storage magazine and multiport arc-extinguishing tube 2; Be provided with the track 6 for laterally discharging arc extinguishing gas ball 7 in described storage magazine, and be provided with preparation track in the bottom of track 6; Described preparation track is provided with the counting press points 11 be connected with the driving shaft of counter 3; The end of described preparation track is provided with gas ball trigger bit 9; The both sides of described gas ball trigger bit 9 are respectively equipped with trigger electrode 10; Described trigger electrode 10 is connected with the induction coil for gathering the lightening pulse signal of telecommunication; Described multiport arc-extinguishing tube 2 is provided with the outlet 4 that several stretch out lightning protection device main body 1 outer surface, and is provided with in the inside of multiport arc-extinguishing tube 2 and leads arc ball 5; Described lead arc ball 5 be arranged at outlet 4 two side positions and the corner of multiport arc-extinguishing tube 2; The external arc electrode in one end of described multiport arc-extinguishing tube 2, the other end points to counting press points 11.
Described arc extinguishing gas ball 7 is provided with shell 12; Described shell 12 is provided with the breach of two symmetric designs also in inverted V-shaped, is provided with connecting electrode 13 at the top of breach; When arc extinguishing gas ball 7 is in gas ball trigger bit 9, the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 7, namely, when described arc extinguishing gas ball 7 enters gas ball trigger bit 9 from preparation track, breach on the shell 12 of arc extinguishing gas ball 7 electrode 10 that is triggered is held, under the effect of arc extinguishing gas ball 7 self gravitation, arc extinguishing gas ball 7 vertically enters gas ball trigger bit 9 by laterally gliding to transferring to, and the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 9.
Described track is vertical track, and is provided with two row; A mobilizable baffle plate 8 is provided with between two row track exports.Described multiport arc-extinguishing tube 2 is formed primarily of several thin ceramic tubes.Described lightning protection device main body 1 is provided with bearing bar, and one end of described bearing bar extends to lightning protection device main body 1 inside, and is provided with coulomb dish at bearing bar end.
Embodiment 3:
A kind of count enable is two blocks lightning protection device, comprises lightning protection device main body 1, arc extinguishing gas ball 7 and is fixedly mounted on the counter 3 of lightning protection device main body 1 outer surface; Wherein, described lightning protection device main body 1 inside is provided with storage magazine and multiport arc-extinguishing tube 2; Be provided with the track 6 for laterally discharging arc extinguishing gas ball 7 in described storage magazine, and be provided with preparation track in the bottom of track 6; Described preparation track is provided with the counting press points 11 be connected with the driving shaft of counter 3; The end of described preparation track is provided with gas ball trigger bit 9; The both sides of described gas ball trigger bit 9 are respectively equipped with trigger electrode 10; Described trigger electrode 10 is connected with the induction coil for gathering the lightening pulse signal of telecommunication; Described multiport arc-extinguishing tube 2 is provided with the outlet 4 that several stretch out lightning protection device main body 1 outer surface, and is provided with in the inside of multiport arc-extinguishing tube 2 and leads arc ball 5; Described lead arc ball 5 be arranged at outlet 4 two side positions and the corner of multiport arc-extinguishing tube 2; The external arc electrode in one end of described multiport arc-extinguishing tube 2, the other end points to counting press points 11.
Described arc extinguishing gas ball 7 is provided with shell 12; Described shell 12 is provided with the breach of two symmetric designs also in inverted V-shaped, is provided with connecting electrode 13 at the top of breach; When arc extinguishing gas ball 7 is in gas ball trigger bit 9, the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 7, namely, when described arc extinguishing gas ball 7 enters gas ball trigger bit 9 from preparation track, breach on the shell 12 of arc extinguishing gas ball 7 electrode 10 that is triggered is held, under the effect of arc extinguishing gas ball 7 self gravitation, arc extinguishing gas ball 7 vertically enters gas ball trigger bit 9 by laterally gliding to transferring to, and the connecting electrode 13 of arc extinguishing gas ball 7 carries out reliable contacts with the trigger electrode 10 of gas ball trigger bit 9.
Described multiport arc-extinguishing tube 2 is formed primarily of several thin ceramic tubes.
Claims (5)
1. count enable is two blocks a lightning protection device, comprises lightning protection device main body (1), arc extinguishing gas ball (7) and is fixedly mounted on the counter (3) of lightning protection device main body (1) outer surface; It is characterized in that: described lightning protection device main body (1) inside is provided with storage magazine and multiport arc-extinguishing tube (2); Be provided with the track (6) for laterally discharge arc extinguishing gas ball (7) in described storage magazine, and be provided with preparation track in the bottom of track (6); Described preparation track is provided with the counting press points (11) be connected with the driving shaft of counter (3); The end of described preparation track is provided with gas ball trigger bit (9); The both sides of described gas ball trigger bit (9) are respectively equipped with trigger electrode (10); Described trigger electrode (10) is connected with the induction coil for gathering the lightening pulse signal of telecommunication; Described multiport arc-extinguishing tube (2) is provided with the outlet (4) that several stretch out lightning protection device main body (1) outer surface, and is provided with in the inside of multiport arc-extinguishing tube (2) and leads arc ball (5); Described lead arc ball (5) be arranged at outlet (4) two side positions and the corner of multiport arc-extinguishing tube (2); The external arc electrode in one end of described multiport arc-extinguishing tube (2), the other end points to counting press points (11).
2. count enable according to claim 1 is two blocks lightning protection device, it is characterized in that: described arc extinguishing gas ball (7) is provided with shell (12), described shell (12) is provided with the breach of two symmetric designs also in inverted V-shaped, is provided with connecting electrode (13) at the top of breach, when arc extinguishing gas ball (7) is in gas ball trigger bit (9), the connecting electrode (13) of arc extinguishing gas ball (7) and the trigger electrode (10) of gas ball trigger bit (7) carry out reliable contacts, namely, when described arc extinguishing gas ball (7) enters gas ball trigger bit (9) from preparation track, breach on the shell (12) of arc extinguishing gas ball (7) electrode (10) that is triggered is held, under arc extinguishing gas ball (7) self gravitation effect, arc extinguishing gas ball (7) vertically enters gas ball trigger bit (9) by laterally gliding to transferring to, the connecting electrode (13) of arc extinguishing gas ball (7) and the trigger electrode (10) of gas ball trigger bit (9) carry out reliable contacts.
3. count enable according to claim 1 is two blocks lightning protection device, it is characterized in that: described track is tilting track or vertical track, and is provided with more than two row; A mobilizable baffle plate (8) is being provided with between two between track.
4. count enable according to claim 1 is two blocks lightning protection device, it is characterized in that: described multiport arc-extinguishing tube (2) is formed primarily of several thin ceramic tubes.
5. count enable according to claim 1 is two blocks lightning protection device, it is characterized in that: described lightning protection device main body (1) is provided with bearing bar, and one end of described bearing bar extends to lightning protection device main body (1) inside, and is provided with coulomb dish at bearing bar end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094186.1U CN204361477U (en) | 2015-02-10 | 2015-02-10 | A kind of count enable is two blocks lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094186.1U CN204361477U (en) | 2015-02-10 | 2015-02-10 | A kind of count enable is two blocks lightning protection device |
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| Publication Number | Publication Date |
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| CN204361477U true CN204361477U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520094186.1U Withdrawn - After Issue CN204361477U (en) | 2015-02-10 | 2015-02-10 | A kind of count enable is two blocks lightning protection device |
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| CN (1) | CN204361477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701736A (en) * | 2015-02-10 | 2015-06-10 | 王巨丰 | Countable double-cutoff lightning arrester |
-
2015
- 2015-02-10 CN CN201520094186.1U patent/CN204361477U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701736A (en) * | 2015-02-10 | 2015-06-10 | 王巨丰 | Countable double-cutoff lightning arrester |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20160914 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |