CN104201485A - Short circuit grounding wire device with locking function - Google Patents
Short circuit grounding wire device with locking function Download PDFInfo
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- CN104201485A CN104201485A CN201410482939.6A CN201410482939A CN104201485A CN 104201485 A CN104201485 A CN 104201485A CN 201410482939 A CN201410482939 A CN 201410482939A CN 104201485 A CN104201485 A CN 104201485A
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- ground connection
- blocking function
- insulation shell
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Abstract
The invention relates to a short circuit grounding wire device with a locking function. The short circuit grounding wire device comprises an operation rod (1), a grounding chuck (4), a grounding wire guide-out end (25), a grounding lead (26) and a grounding end chuck (5). The grounding chuck (4) is connected with the grounding lead (26) through the grounding wire guide-out end (25). The grounding lead (26) is connected with the grounding end chuck (5). The side, close to the grounding chuck (4), of the operation rod (1) is provided with an electrified pre-warning device (6). The pre-warning device (6) comprises a locking device (7) for preventing misoperation. Locking can be performed through the locking device (7) when grounding misoperation occurs, and personal safety of operators is guaranteed. Compared with the prior art, the short circuit grounding wire device is safe and reliable, convenient to operate, and the like.
Description
Technical field
The present invention relates to field of power, especially relate to a kind of short circuit grounding line apparatus with blocking function.
Background technology
Short-circuit grounding wire is the indispensable safety appliance of a kind of electric power apparatus examination operation, once slip up yet carry additionally the operation that short circuit connects wires, for example to the power equipment of charging operation, carry additionally short-circuit grounding wire 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, however a lot of pernicious misoperation fault also fail fundamentally to stop, for example the pernicious misoperation fault with cable address short-circuit grounding wire still happens occasionally every year.With cable address short-circuit grounding wire, both caused serious device damage, and caused extremely serious personal injury yet, yet 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 sign mistake, electroscope fault etc. cause mistake to charging operation hanging equipment earth connection, this technology is not effect completely, develops a kind ofly by technological means, to stop just to seem particularly necessary with the scheme of cable address short-circuit grounding wire for this reason.
Summary of the invention
Object of the present invention is exactly to provide a kind of safe and reliable, easy to operate short circuit grounding line apparatus with blocking function in order to overcome the defect of above-mentioned prior art existence.
Object of the present invention can be achieved through the following technical solutions:
A kind of short circuit grounding line apparatus with blocking function, it is characterized in that, comprise action bars 1, ground connection chuck 4, earth connection exit 25, ground lead 26 and earth terminal chuck 5, described ground connection chuck 4 is connected with ground lead 26 by earth connection exit 25, described ground lead 26 is connected with earth terminal chuck 5, described action bars 1 is provided with charged prior-warning device 6 near ground connection chuck 4 sides, this is provided with charged prior-warning device 6 and comprises misoperation-proof locking device 7, operating personnel are when carrying out ground connection misoperation, by misoperation-proof locking device 7, lock, guarantee operating personnel's personal safety.
Described misoperation-proof locking device 7 comprises electromagnet 8, impedance component 9, electrode 10, spring 11 and insulation shell 12, described electromagnet 8, impedance component 9, spring 11 is positioned at described insulation shell 12 inside, described spring 11 is axially installed between described ground connection chuck 4 and the bottom of described insulation shell 12, the top and bottom of described insulation shell 12 is respectively equipped with for described ground connection chuck 4 and makes axially movable hole 13 with action bars 1, 14, the side of described ground connection chuck 4 is provided with bayonet socket 15, described bayonet socket 15 is corresponding with armature 22 positions of described electromagnet 8, described electrode 10 is positioned at the top of described insulation shell 12, and with described impedance component 9, after the coil series connection of electromagnet 8, be connected with described ground connection chuck 4, when operating personnel are when carrying out ground connection misoperation, described electrode 10 electric discharges form electric arc and sound warning, armature 22 actions of described electromagnet 8, stretch in bayonet socket 15, make this device locked.
Described insulation shell 12 upper ends are provided with insulation cover plate 23, and outside is provided with for rainproof insulation cluster parachute 28.
Described impedance component 9 is in series by resistance, electric capacity or resistance capacitance.
Described insulation shell 12 adopts elastomeric material to be made.
Described ground lead 26 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 16, this last secondary earth connection discriminating gear 16 is integral type or detachable type, in order to differentiate this functional arrangement, be last secondary ground path.
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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
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
Referring to accompanying drawing 1, this is the structural representation of first embodiment of the invention.Charged prior-warning device 6 wherein consists of a misoperation-proof locking device 7.This misoperation-proof locking device is by electromagnet 8, impedance component 9, electrode 10, spring 11, insulation shell 12 parts such as grade form, electromagnet 8, impedance component 9, spring 11 is positioned at insulation shell inside, spring 11 is axially installed between ground connection chuck 4 and the bottom of insulation shell 12, the top and bottom of insulation shell 12 is respectively equipped with for ground connection chuck 4 and the axially movable hole 13 of action bars, 14, the side of ground connection chuck 4 is provided with a bayonet socket 15, this bayonet socket is corresponding with armature 22 positions of electromagnet 8, electrode 10 is positioned at the top of insulation shell 12, and with impedance component 9, after the coil series connection of electromagnet 8, be connected with ground connection chuck 4.On the top hole 13 of insulation shell 12, be also provided with insulation cover plate 23, ground connection chuck 4 is connected with ground lead 26 by ground connection exit 25.
Compare with conventional short-circuit grounding wire, the present embodiment has had more a charged prior-warning device 6, and this device consists of misoperation-proof locking device 7.When operating personnel's hanging earthing conductor operates, first earth terminal chuck 5 and on-the-spot earthing bar are connect to jail, then hand-held bar 1, operating grip 3 hang up by the ground connection chuck 4 of every phase the electric equipment that needs ground connection successively, complete hanging earthing conductor operation.The misoperation-proof locking device 7 of the present embodiment is connected as a single entity with the ground connection chuck of every phase equally, during the earth connection of operation described in the present embodiment, earth connection hanging position need to be pointed to in the top of the insulation shell of misoperation-proof locking device 7 12, insulation shell 12 top one sides are withstood on to the below of earth connection hanging position, then operating grip is upwards pushed hard, overcome the elastic force of spring 11, after ground connection chuck in shell is ejected from hole 13, earth clip head-clamp is to equipment, turn subsequently operating grip, by binding thread 27, 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, due to the electrical potential difference between earth connection and charging equipment, equipment will discharge to the electrode 10 on insulation shell top, form obvious electric arc and frizzle, play obvious prompt alarm effect, remind operating personnel's equipment to have electricity, off-ground operation immediately.Due to the metering function of impedance component 9, the arc current that makes to flow through it is very little, will not cause arc short-circuit.If operating personnel continue operation by force, because coil, the ground lead 26 of this arc current by impedance component 9, electromagnet 8 enters, electromagnet 8 is excitation immediately, and armature 22 ejects, and stretches into corresponding with it bayonet socket 15, ground connection chuck 4 is blocked, even if now firmly up push away, ground connection chuck also cannot eject in insulation shell 12, because ground connection chuck is closed again, earth connection cannot hang up, and has played the effect of forced blocking.When this blocking function works, the ground connection chuck 4 of the present embodiment, impedance component, electromagnet, ground outlet etc. are all completely enclosed within 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 very 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.
In order further to improve the insulation safety performance of the present embodiment, on top hole 13, be provided with insulation cover plate 23, can prevent that the locking that charging equipment causes the early discharge of inner earth clip head is malfunctioning, also possess rainproof effect simultaneously; The outside of insulation shell 12 also can axially arrange promise dry plate insulation cluster parachute 28, improves the handling safety performance of misty rain weather; Insulation shell should adopt transparent composite manufacture, to see internal mechanism running-active status clearly; The impedance component of the present embodiment adopts the resistance of a plurality of series connection to form, once a resistance punctures like this, also have other resistance to play metering function, just can not cause ground short circuit, the value of this resistance will guarantee under specified electric pressure, the arc current flowing through is no more than 5A, to guarantee can not cause arc short-circuit.This impedance component equally also can consist of capacitor or inductor, or resistance and capacitor, inductor are in series, can reduce like this heating of resistive element, extend the life-span of whole misoperation-proof locking device.Insulation retaining ring 2, for alert hand position, prevents from getting an electric shock.The present embodiment is particularly useful for following various indoor, the outdoor earth connections of 66KV to be used.Its mechanical structure is simply ingenious, convenient for production, required parts are without specific (special) requirements, use also very convenient, without unnecessary operation, when the ground connection for cable, capacitor operates, the impedance component of the present embodiment has possessed the effect of discharging rod, therefore can remove discharge operation from, further promote the convenience of operation.
Short-circuit grounding wire on electric equipment, substantially all in order to guarantee overhaul of the equipments safety, arrange, once overhaul, need to recover power transmission, 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.During 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, in order to overcome earth connection, omits the potential safety hazard that dismounting causes.This device comprises that 18, power circuits of electricity 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 26 coupled signal electric currents, power circuit 19 is to ac signal circuit 18 power supplies, 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 26, 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, take and 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 comprised of other similar impedance loop test circuits.
Should be noted that, the above embodiments be all for illustrate the present invention rather than 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 a plurality of this elements, and these variations all should belong to protection scope of the present invention.
Claims (9)
1. a short circuit grounding line apparatus with blocking function, it is characterized in that, comprise action bars (1), ground connection chuck (4), earth connection exit (25), ground lead (26) and earth terminal chuck (5), described ground connection chuck (4) is connected with ground lead (26) by earth connection exit (25), described ground lead (26) is connected with earth terminal chuck (5), described action bars (1) is provided with charged prior-warning device (6) near ground connection chuck (4) side, this is provided with charged prior-warning device (6) and comprises misoperation-proof locking device (7), operating personnel are when carrying out ground connection misoperation, by misoperation-proof locking device (7), lock, guarantee operating personnel's personal safety.
2. a kind of short circuit grounding line apparatus with blocking function according to claim 1, it is characterized in that, described misoperation-proof locking device (7) comprises electromagnet (8), impedance component (9), electrode (10), spring (11) and insulation shell (12), described electromagnet (8), impedance component (9), spring (11) is positioned at described insulation shell (12) inside, described spring (11) is axially installed between described ground connection chuck (4) and the bottom of described insulation shell (12), the top and bottom of described insulation shell (12) is respectively equipped with for described ground connection chuck (4) and action bars (1) and makes axially movable hole (13, 14), the side of described ground connection chuck (4) is provided with bayonet socket (15), described bayonet socket (15) is corresponding with armature (22) position of described electromagnet (8), described electrode (10) is positioned at the top of described insulation shell (12), and with described impedance component (9), after the coil series connection of electromagnet (8), be connected with described ground connection chuck (4), when operating personnel are when carrying out ground connection misoperation, described electrode (10) electric discharge forms electric arc and sound warning, armature (22) action of described electromagnet (8), stretch in bayonet socket (15), make this device locked.
3. a kind of short circuit grounding line apparatus with blocking function according to claim 1, is characterized in that, described insulation shell (12) upper end is provided with insulation cover plate (23), and outside is provided with for rainproof insulation cluster parachute (28).
4. a kind of short circuit grounding line apparatus with blocking function according to claim 1, is characterized in that, described impedance component (9) is in series by resistance, electric capacity or resistance capacitance.
5. a kind of short circuit grounding line apparatus with blocking function according to claim 1, is characterized in that, described insulation shell (12) adopts elastomeric material to be made.
6. a kind of short circuit grounding line apparatus with blocking function according to claim 1, is characterized in that, described ground lead (26) is that three-phase convergent current type or three-phase are split type.
7. a kind of short circuit grounding line apparatus with blocking function according to claim 1, is characterized in that, described ground connection chuck (4) is spiral or spring.
8. a kind of short circuit grounding line apparatus with blocking function according to claim 1, it is characterized in that, also comprise last secondary earth connection discriminating gear (16), whether this last secondary earth connection discriminating gear (16) is integral type or detachable type, in order to differentiate this functional arrangement, be last secondary ground path.
9. a kind of short circuit grounding line apparatus with blocking function according to claim 8, 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), and described power circuit (19) is connected with described ac signal circuit (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482939.6A CN104201485B (en) | 2014-09-19 | 2014-09-19 | A kind of short circuit grounding line apparatus with blocking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482939.6A CN104201485B (en) | 2014-09-19 | 2014-09-19 | A kind of short circuit grounding line apparatus with blocking function |
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| CN104201485A true CN104201485A (en) | 2014-12-10 |
| CN104201485B CN104201485B (en) | 2016-11-09 |
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| CN201410482939.6A Active CN104201485B (en) | 2014-09-19 | 2014-09-19 | A kind of short circuit grounding line apparatus with blocking function |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104201486A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Portable short-circuit grounding device |
| CN105356094A (en) * | 2015-11-23 | 2016-02-24 | 国家电网公司 | Plug-in ground wire safety operation device |
| CN106093687A (en) * | 2016-07-28 | 2016-11-09 | 国网辽宁省电力有限公司丹东供电公司 | Intelligent anti-line with ground closes a floodgate and detects device |
| CN106405166A (en) * | 2016-10-28 | 2017-02-15 | 国网浙江省电力公司金华供电公司 | Ground line of display device with current |
| CN106935986A (en) * | 2017-04-15 | 2017-07-07 | 霍昆 | A kind of use for laboratory is in the locking-type discharging rod of capacitor discharge |
| CN107069259A (en) * | 2016-12-12 | 2017-08-18 | 国网北京市电力公司 | Portable ground wire |
| CN107275968A (en) * | 2017-06-23 | 2017-10-20 | 新疆华泰重化工有限责任公司 | A kind of electric handle of anti-dislocation |
| CN109510004A (en) * | 2019-01-11 | 2019-03-22 | 国网冀北电力有限公司唐山供电公司 | A kind of 110kV or more temporarily line engaging means and method |
| CN110429411A (en) * | 2019-08-30 | 2019-11-08 | 湖北华电江陵发电有限公司 | A kind of short-circuit grounding wire combination head |
| CN111525296A (en) * | 2020-05-27 | 2020-08-11 | 南京盾捷电气科技有限公司 | Automatically-controlled grounding wire device hung on contact net and control method thereof |
| CN112398040A (en) * | 2020-11-06 | 2021-02-23 | 贵州电网有限责任公司 | Device for rapidly finding and searching live wire grounding of distribution transformer line |
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| CN104201486A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Portable short-circuit grounding device |
| CN105356094A (en) * | 2015-11-23 | 2016-02-24 | 国家电网公司 | Plug-in ground wire safety operation device |
| CN106093687A (en) * | 2016-07-28 | 2016-11-09 | 国网辽宁省电力有限公司丹东供电公司 | Intelligent anti-line with ground closes a floodgate and detects device |
| CN106405166A (en) * | 2016-10-28 | 2017-02-15 | 国网浙江省电力公司金华供电公司 | Ground line of display device with current |
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| CN106935986A (en) * | 2017-04-15 | 2017-07-07 | 霍昆 | A kind of use for laboratory is in the locking-type discharging rod of capacitor discharge |
| CN107275968A (en) * | 2017-06-23 | 2017-10-20 | 新疆华泰重化工有限责任公司 | A kind of electric handle of anti-dislocation |
| CN109510004A (en) * | 2019-01-11 | 2019-03-22 | 国网冀北电力有限公司唐山供电公司 | A kind of 110kV or more temporarily line engaging means and method |
| CN109510004B (en) * | 2019-01-11 | 2023-09-01 | 国网冀北电力有限公司唐山供电公司 | Device and method for connecting temporary ground wire with voltage of 110kV or above |
| CN110429411A (en) * | 2019-08-30 | 2019-11-08 | 湖北华电江陵发电有限公司 | A kind of short-circuit grounding wire combination head |
| CN110429411B (en) * | 2019-08-30 | 2024-03-08 | 湖北华电江陵发电有限公司 | Short-circuit grounding wire combined head |
| CN111525296A (en) * | 2020-05-27 | 2020-08-11 | 南京盾捷电气科技有限公司 | Automatically-controlled grounding wire device hung on contact net and control method thereof |
| CN111525296B (en) * | 2020-05-27 | 2021-05-18 | 南京盾捷电气科技有限公司 | Automatically-controlled grounding wire device hung on contact net and control method thereof |
| CN112398040A (en) * | 2020-11-06 | 2021-02-23 | 贵州电网有限责任公司 | Device for rapidly finding and searching live wire grounding of distribution transformer line |
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