CN104201486A - Portable short-circuit grounding device - Google Patents
Portable short-circuit grounding device Download PDFInfo
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- CN104201486A CN104201486A CN201410482947.0A CN201410482947A CN104201486A CN 104201486 A CN104201486 A CN 104201486A CN 201410482947 A CN201410482947 A CN 201410482947A CN 104201486 A CN104201486 A CN 104201486A
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Abstract
The invention relates to a portable short-circuit grounding device which comprises an operating connector (1), a ground clamp (4), a ground wire outgoing terminal (7), a ground lead (6) and a ground terminal clamp (5). The ground clamp (4) is connected with the ground lead (6) through the ground wire outgoing terminal (7), the ground lead (6) is connected with the ground terminal clamp (5), and a charged alarm device (2) is arranged on one side, close to the ground clamp (4), of the operating connector (1) and comprises an anti-fault locking device (3). The anti-fault locking device (3) is used for locking to guarantee personal safety of operators when ground fault occurs. Compared with the prior art, the portable short-circuit grounding device has the advantages of safety, reliability, convenience in operation and the like.
Description
Technical field
The present invention relates to field of power, especially relate to a kind of Portable short-circuit earthing device.
Background technology
Short-circuit grounding wire is the indispensable safety appliance of a kind of electric power apparatus examination operation, once slip up but carry additionally the operation that short circuit connects wires, for example carry additionally short-circuit grounding wire to the power equipment of charging operation by mistake, will cause serious high-tension apparatus metallic earthing short circuit, produce great short circuit current and high-temperature electric arc, cause the serious accident that field apparatus moment burns, operating personnel's electric arc burn is even dead.
Along with the in-depth of anti-misoperation management system and the progress of technology, power industry misoperation fault declines year by year, but a lot of pernicious misoperation fault also fails fundamentally to stop, for example, still happen occasionally every year with the pernicious misoperation fault of cable address short-circuit grounding wire.Both caused serious device damage with cable address short-circuit grounding wire, and caused extremely serious personal injury yet, but this problem does not still have the solution of technological layer so far.Chinese patent CN201210398449 proposes a kind of anti-misoperation electricity earthing cable, this technology is by arranging interlock between the ground connection chuck at conventional short-circuit grounding wire and earth terminal chuck, can prevent the violation operation situation of " first hanging equipment end, rear extension earth terminal ", but the situation for the equipment that is grounded is sent a telegram here suddenly, equipment nameplate mark mistake, electroscope fault etc. cause mistake to charging operation hanging equipment earth connection, this technology does not act on completely, develops a kind of scheme of stopping with cable address short-circuit grounding wire by technological means for this reason and just seems particularly necessary.
Summary of the invention
Object of the present invention is exactly to provide a kind of safe and reliable, easy to operate Portable short-circuit earthing device in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of Portable short-circuit earthing device, it is characterized in that, comprise operation joint 1, ground connection chuck 4, earth connection exit 7, ground lead 6 and earth terminal chuck 5, described ground connection chuck 4 is connected with ground lead 6 by earth connection exit 7, described ground lead 6 is connected with earth terminal chuck 5, described operation joint 1 is provided with charged prior-warning device 2 near ground connection chuck 4 sides, this charged prior-warning device 2 comprises misoperation-proof locking device 3, operating personnel are in the time carrying out ground connection misoperation, lock by misoperation-proof locking device 3, ensure operating personnel's personal safety.
Described misoperation-proof locking device 3 comprises electromagnet 8, induction type AC current detector 9 and insulation shell 12, described electromagnet 8, induction type AC current detector 9, ground connection chuck 4 is positioned at described insulation shell 12 inside, one end of the corresponding ground connection chuck of described insulation shell 12 open side is provided with hole 13, described hole 13 indents, one side of described hole 13 is provided with bayonet socket 15, opposite side is provided with electromagnet 8, described bayonet socket 15 is corresponding with armature 10 positions of described electromagnet 8, the switching value output 11 of described induction type AC current detector 9 is connected with the coil of electromagnet 8, when operating personnel are in the time carrying out ground connection misoperation, the alarm immediately of described induction type AC current detector 9, the armature 10 of described electromagnet 8 moves, and stretches in bayonet socket 15, makes hole 13 locked.
Described insulation shell 12 adopts elastomeric material to be made.
Described ground lead 6 is that three-phase convergent current type or three-phase are split type.
Described ground connection chuck 4 is spiral or spring.
Whether also comprise last secondary earth connection discriminating gear, this last secondary earth connection discriminating gear is integral type or detachable type, be last secondary ground path in order to differentiate this functional arrangement.
Described last width earth connection discriminating gear 16 comprises an induction coil 17, ac signal circuit 18, power circuit 19, impedance measuring circuit 20 and a display circuit 21, described in described ac signal circuit 18, connect with impedance measuring circuit 20 and induction coil 17, described power circuit 19 is connected with described ac signal circuit 18.
Compared with prior art, the present invention has possessed traditional short-circuit grounding wire electricity prompting or blocking function, when operating personnel hang this earth connection when having electric equipment, alarm device on the contact of earth connection top or locking device action, remind operating personnel's equipment live, must stop immediately hanging ground-wire, locking type product can also seal ground connection chuck or isolation ground lead immediately, earth connection cannot be hung up, the serious accident of fundamentally having avoided mistake hanging earthing conductor to cause.The present invention can also have last earth connection discrimination function, and the mode of injecting by custom-designed AC signal judges whether the earth connection of current dismounting is last root, the accident of anti-leak-stopping dismounting ground wire combined floodgate power transmission.
Brief description of the drawings
Fig. 1 is the structural representation of the inventive example;
Fig. 2 is the circuit block diagram of last secondary earth connection discriminating gear of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment mono-
Referring to accompanying drawing 1, this is the structural representation of the embodiment of the present invention.The charged prior-warning device 2 of the present embodiment is made up of misoperation-proof locking device 3.This misoperation-proof locking device is by electromagnet 8, induction type AC current detector 9, insulation shell 12 formations such as grade, described electromagnet 8, induction type AC current detector 9, ground connection chuck 4 is positioned at insulation shell 12 inside, one end of the corresponding ground connection chuck of insulation shell 12 open side is provided with hole 13, hole 13 indents, one side of described hole 13 is provided with bayonet socket 15, opposite side is provided with electromagnet 8, bayonet socket 15 is corresponding with armature 10 positions of described electromagnet 8, the switching value output 11 of induction type AC current detector 9 is connected with the coil of electromagnet 8, earth connection exit 7 is located on ground connection chuck 4.
The present embodiment only has an operation joint 1, operation after docking for the insulating bar special with electric power, and the volume of the present embodiment is just very little like this, carries more convenient.Misoperation-proof locking device 3 operation principles and embodiment 1 have similarity, in the time that operating personnel's hanging earthing conductor operates, first earth terminal chuck 5 and on-the-spot earthing bar are connect to jail, then electric power Special insulative operating rod is docked firmly with operation joint 2, utilize electric power Special insulative operating rod that the ground connection chuck 4 of every phase is hung up to the electric equipment that needs ground connection successively, complete hanging earthing conductor operation.The misoperation-proof locking device 3 of the present embodiment is connected as a single entity with the ground connection chuck of every phase equally, its insulation shell 12 can be in a side folding, when the earth connection of operation described in the present embodiment, the hole of the insulation shell of misoperation-proof locking device 3 12 13 need to be pointed to earth connection hanging position, by hole 13 push open, earth clip head-clamp is to equipment, turn subsequently operating grip, by binding thread 14, ground connection chuck is tightened in to ground connection hanging position, just can complete hanging earthing conductor operation.If equipment live, when insulation shell 12 is when having electric equipment, induction type AC current detector 9 alarm immediately, reminds operating personnel's equipment to have electricity, off-ground operation immediately; The switching value output 11 of this induction type AC current detector 9 is by output voltage simultaneously, cause the armature 10 of electromagnet 8 to move, armature 10 stretches into bayonet socket 15, hole 13 is lockable and can not opens, now ground connection chuck is closed in insulation shell 12 inside, earth connection cannot hang up, and has played the effect of forced blocking.In the time that this blocking function works, ground connection chuck 4 parts such as grade of the present embodiment are all closed in insulation shell, and therefore no matter how operating personnel move back and forth, and can not cause that equipment electric arc of discharge causes accident.The present embodiment possesses perfect anti-incorrect manipulation deadlock function, even if personnel's cruelty operates by force, also can not cause accident, can become the last one impassable defence line that prevents mistake hanging earthing conductor serious accident.
The present embodiment is applicable to following various indoor, the outdoor earth connections of 66KV and uses, and its mechanical structure is simply ingenious, convenient for production, and owing to having saved impedance component, volume is less, use also very convenient, without unnecessary operation.
Short-circuit grounding wire on electric equipment, substantially all arrange in order to ensure overhaul of the equipments safety, need to recover power transmission once overhaul, if the short-circuit grounding wire of carrying additionally is forgotten dismounting before, just be equal to the equipment combined floodgate power transmission to ground short circuit, its serious consequence causing is self-evident equally.When electric equipment interruption maintenance, often to overpay short-circuit grounding wire several local extensions, as long as there is a pair to forget that dismounting will cause catastrophic serious accident.Although line combined floodgate power transmission with ground seldom results in personal injury caused by an accident, but also can cause serious harm to equipment and electrical network, for this problem, it is also provided with last secondary earth connection discriminating gear 16 the present embodiment, omits in order to overcome earth connection the potential safety hazard that dismounting causes.This device comprises that electricity 18, power circuit 19, impedance measuring circuit 20 and a display circuit 21 occur for an induction coil 17, AC signal, ac signal circuit 18 is connected with impedance measuring circuit 20 and induction coil 17, power circuit 19 is connected with ac signal circuit 18, shown in accompanying drawing 2.
Induction coil 17 is for to ground lead 6 coupled signal electric currents, power circuit 19 is powered to ac signal circuit 18, make it to produce an AC signal, then this signal is transported to induction coil 17 by impedance measuring circuit 20, induction coil 17 is coupled this AC signal mode by electromagnetic induction is loaded on ground lead 6, if this earth connection is last secondary earth connection of hanging on this electric equipment, this AC signal can not form loop on ground lead, the input impedance of induction coil is just very large, impedance measuring circuit shows this resistance value by display circuit 20, operating personnel are by the impedance showing, just can know that this secondary earth connection is last secondary earth connection, normal power transmission just after removing.If this electric equipment also hangs with other earth connections of not removing, this AC signal forms loop by the earth on ground lead, the input impedance of induction coil is just very little, impedance measuring circuit shows this resistance value equally by display circuit 20, operating personnel are by the impedance showing, just know on this equipment and to also have the earth connection of omitting, needing to remove could power transmission after clear.Line of induction snare should be at ground lead three-phase river outlet, and so once test just can know whether three-phase ground line has all been removed totally.The AC signal frequency of ac signal circuit can not be too high or too low, to approach power frequency as good, prevent Transformer Winding on too high too low, the equipment of frequency or capacitor shunting cause measure inaccurate.Last secondary earth connection discrimination function that the present embodiment possesses, make it to have possessed the dual strick precaution effect that prevents live connection of ground wire, prevents line combined floodgate power transmission with ground, further promote anti-misoperation performance of the present invention, can fundamentally stop the electrical production accident causing because of earth connection misoperation.Certainly, last secondary earth connection discriminating gear of the present embodiment also can be made up of other similar impedance loop test circuits.
Should be noted that, the above embodiments be all for illustrate the present invention instead of restriction the present invention, for example short-circuit grounding wire of the present invention can be both three-phase convergent current type can be also that three-phase is split type; Ground connection chuck can be both screw type can be also spring; Misoperation-proof locking device can adopt other similar machinery or electric locking devices completely; Last width earth connection discriminating gear both can be made one with earth connection also can make detachable type; Etc..Many technical characterictics in different embodiments of the invention are interchangeable or omit; the parameter setting of many elements can change as required; " one " before element of the present invention or " one " do not get rid of and occur multiple this elements, and these variations all should belong to protection scope of the present invention.
Claims (7)
1. a Portable short-circuit earthing device, it is characterized in that, comprise operation joint (1), ground connection chuck (4), earth connection exit (7), ground lead (6) and earth terminal chuck (5), described ground connection chuck (4) is connected with ground lead (6) by earth connection exit (7), described ground lead (6) is connected with earth terminal chuck (5), described operation joint (1) is provided with charged prior-warning device (2) near ground connection chuck (4) side, this charged prior-warning device (2) comprises misoperation-proof locking device (3), operating personnel are in the time carrying out ground connection misoperation, lock by misoperation-proof locking device (3), ensure operating personnel's personal safety.
2. a kind of Portable short-circuit earthing device according to claim 1, it is characterized in that, described misoperation-proof locking device (3) comprises electromagnet (8), induction type AC current detector (9) and insulation shell (12), described electromagnet (8), induction type AC current detector (9), ground connection chuck (4) is positioned at described insulation shell (12) inside, one end of the corresponding ground connection chuck of described insulation shell (12) open side is provided with hole (13), described hole (13) indent, one side of described hole (13) is provided with bayonet socket (15), opposite side is provided with electromagnet (8), described bayonet socket (15) is corresponding with armature (10) position of described electromagnet (8), the switching value output (11) of described induction type AC current detector (9) is connected with the coil of electromagnet (8), when operating personnel are in the time carrying out ground connection misoperation, described induction type AC current detector (9) alarm immediately, armature (10) action of described electromagnet (8), stretches in bayonet socket (15), makes hole (13) locked.
3. a kind of Portable short-circuit earthing device according to claim 1, is characterized in that, described insulation shell (12) adopts elastomeric material to be made.
4. a kind of Portable short-circuit earthing device according to claim 1, is characterized in that, described ground lead (6) is that three-phase convergent current type or three-phase are split type.
5. a kind of Portable short-circuit earthing device according to claim 1, is characterized in that, described ground connection chuck (4) is spiral or spring.
6. a kind of Portable short-circuit earthing device according to claim 1, it is characterized in that, whether also comprise last secondary earth connection discriminating gear, this last secondary earth connection discriminating gear is integral type or detachable type, be last secondary ground path in order to differentiate this functional arrangement.
7. a kind of Portable short-circuit earthing device according to claim 1, it is characterized in that, described last width earth connection discriminating gear (16) comprises an induction coil (17), an ac signal circuit (18), a power circuit (19), an impedance measuring circuit (20) and a display circuit (21), described ac signal circuit (18) is described connects with impedance measuring circuit (20) and induction coil (17), described power circuit (19) is connected with described ac signal circuit (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482947.0A CN104201486B (en) | 2014-09-19 | 2014-09-19 | A kind of Portable short-circuit grounding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482947.0A CN104201486B (en) | 2014-09-19 | 2014-09-19 | A kind of Portable short-circuit grounding device |
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| CN104201486A true CN104201486A (en) | 2014-12-10 |
| CN104201486B CN104201486B (en) | 2016-07-20 |
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| CN201410482947.0A Active CN104201486B (en) | 2014-09-19 | 2014-09-19 | A kind of Portable short-circuit grounding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941227A (en) * | 2014-09-19 | 2017-07-11 | 国家电网公司 | A kind of anti-misoperation short-circuit grounding device easy to carry |
| CN109979778A (en) * | 2019-03-07 | 2019-07-05 | 浙江江山森源电器有限公司 | A kind of anti-error type earthing switch |
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| CN2588564Y (en) * | 2002-06-11 | 2003-11-26 | 刘叔铭 | Grounding wire with alarm |
| US20110221449A1 (en) * | 2010-03-09 | 2011-09-15 | Koninklijke Philips Electronics N.V. | Method and apparatus for detecting a short circuit |
| CN202975225U (en) * | 2012-12-13 | 2013-06-05 | 云南电网公司临沧供电局 | Misoperation preventive device for power transmission lines |
| CN104201485A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Short circuit grounding wire device with locking function |
| CN104241969A (en) * | 2014-09-19 | 2014-12-24 | 国家电网公司 | Simple short circuit grounding device |
| CN104241968A (en) * | 2014-09-19 | 2014-12-24 | 国家电网公司 | Anti-misoperation short-circuit grounding device |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2588564Y (en) * | 2002-06-11 | 2003-11-26 | 刘叔铭 | Grounding wire with alarm |
| US20110221449A1 (en) * | 2010-03-09 | 2011-09-15 | Koninklijke Philips Electronics N.V. | Method and apparatus for detecting a short circuit |
| CN202975225U (en) * | 2012-12-13 | 2013-06-05 | 云南电网公司临沧供电局 | Misoperation preventive device for power transmission lines |
| CN104201485A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Short circuit grounding wire device with locking function |
| CN104241969A (en) * | 2014-09-19 | 2014-12-24 | 国家电网公司 | Simple short circuit grounding device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106941227A (en) * | 2014-09-19 | 2017-07-11 | 国家电网公司 | A kind of anti-misoperation short-circuit grounding device easy to carry |
| CN106941227B (en) * | 2014-09-19 | 2019-02-19 | 国家电网公司 | A kind of anti-misoperation short-circuit grounding device easy to carry |
| CN109979778A (en) * | 2019-03-07 | 2019-07-05 | 浙江江山森源电器有限公司 | A kind of anti-error type earthing switch |
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| CN104201486B (en) | 2016-07-20 |
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