CN104241969A - Simple short circuit grounding device - Google Patents
Simple short circuit grounding device Download PDFInfo
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- CN104241969A CN104241969A CN201410483252.4A CN201410483252A CN104241969A CN 104241969 A CN104241969 A CN 104241969A CN 201410483252 A CN201410483252 A CN 201410483252A CN 104241969 A CN104241969 A CN 104241969A
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- ground connection
- misoperation
- grounding
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Abstract
The invention relates to a simple short circuit grounding device. The grounding device comprises an operating rod (1), a grounding chuck (4), a grounding wire lead-out end (10), a grounding lead (11) and a grounding end chuck (5). The grounding chuck (4) is connected with the grounding lead (11) through the grounding wire lead-out end (10). The grounding lead (11) is connected with the grounding end chuck (5). An electrification early-warning device (6) is arranged on the side, close to the grounding chuck (4), of the operating rod (1) and includes a misoperation prevention locking device (7). When an operator performs grounding misoperation, the grounding device is locked through the misoperation prevention locking device (7), and therefore the personal safety of the operator is guaranteed. Compared with the prior art, the grounding device has the advantages of being safe, reliable, convenient to operate and the like.
Description
Technical field
The present invention relates to field of power, especially relate to a kind of simple type short-circuit grounding device.
Background technology
Short-circuit grounding wire is the indispensable safety appliance of a kind of electric power apparatus examination operation, but carry additionally operation that short circuit connects wires once slip up, such as carry additionally short-circuit grounding wire to the power equipment of charging operation by mistake, serious high-tension apparatus metallic earthing short circuit will be caused, produce great short circuit current and high-temperature electric arc, cause field apparatus to burn instantaneously, serious accident that 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, such as, be with the pernicious misoperation fault of cable address short-circuit grounding wire still to happen occasionally every year.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 by arranging interlock between the ground connection chuck and earth terminal chuck of conventional short-circuit grounding wire, the violation operation situation of " first hanging equipment end, rear extension earth terminal " can be prevented, but the equipment that is grounded is sent a telegram here suddenly, mistake that equipment nameplate mark mistake, electroscope fault etc. cause is to the situation of charging operation hanging equipment earth connection, this technology does not act on completely, develops a kind ofly to stop to be with the scheme of cable address short-circuit grounding wire just to seem particularly necessary by technological means for this reason.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of safe and reliable, easy to operate simple type short-circuit grounding device is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of simple type short-circuit grounding device, comprise action bars 1, ground connection chuck 4, earth connection exit 10, ground lead 11 and earth terminal chuck 5, described ground connection chuck 4 is connected with ground lead 11 by earth connection exit 10, described ground lead 11 is connected with earth terminal chuck 5, and described action bars 1 is provided with charged prior-warning device 6 near ground connection chuck 4 side;
Described charged prior-warning device 6 comprises misoperation-proof locking device 7, and operating personnel, when carrying out ground connection misoperation, are locked by misoperation-proof locking device 7, ensures the personal safety of operating personnel.
Described misoperation-proof locking device 7 comprises conductive rubber ring 8 and thermal shrinkable sleeve housing 9, it is inner that described ground connection chuck 4 is positioned at described thermal shrinkable sleeve housing 9, one side opening of described thermal shrinkable sleeve housing 9, remainder is closed, the open side of described thermal shrinkable sleeve housing 9 is corresponding with the open side of described ground connection chuck 4, described conductive rubber ring 8 is located on a side opening of thermal shrinkable sleeve housing 9, and is electrically connected with described ground connection chuck 4; When operating personnel are when carrying out ground connection misoperation, described conductive rubber ring 8 discharges and forms electric arc and sound warning, and described conductive rubber ring 8 rapidly heating makes thermal shrinkable sleeve housing 9 heat shrinkable immediately, and this opening part is shrunk to aperture, prevent misoperation from continuing action.
Described charged prior-warning device 6 comprises the impedance component be arranged in thermal shrinkable sleeve housing 9, described impedance component is connected with ground connection chuck 4, and series LED, neon lamp and or buzzer, when operating personnel are when carrying out ground connection misoperation, described ground connection chuck 4 is near there being electric equipment, and described LED, neon lamp or buzzer send sound and light alarm.
Described impedance component is in series by resistance, electric capacity or resistance capacitance.
Described ground lead 11 is that three-phase convergent current type or three-phase are split type.
Described ground connection chuck 4 is spiral or spring.
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 whether this functional arrangement is last secondary ground path.
Last width earth connection discriminating gear 16 described comprises an induction coil 17, ac signal circuit 18, power circuit 19, impedance measuring circuit 20 and a display circuit 21, connect with impedance measuring circuit 20 and induction coil 17 described in described ac signal circuit 18, described power circuit 19 is connected with described ac signal circuit 18.
Compared with prior art, the present invention makes traditional short-circuit grounding wire possess electricity prompting or blocking function, when this earth connection is hung to when having electric equipment by operating personnel, alarm device above earth connection on contact or locking device action, remind operating personnel's equipment live, must stop hanging ground-wire immediately, locking type product can also close ground connection chuck or isolation ground lead immediately, earth connection cannot be hung up, fundamentally avoid the serious accident that hanging earthing conductor by mistake causes.The present invention can also have last earth connection discrimination function, and the mode injected by custom-designed AC signal judges whether the earth connection removed at present 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 one
Referring to accompanying drawing 1, this is structural representation of the present invention.The charged prior-warning device 6 of the present embodiment is made up of a 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 jail, then the ground connection chuck 4 of every phase is hung up the electric equipment needing ground connection by hand-held bar 1, operating grip 3 successively, completes hanging earthing conductor operation.Misoperation-proof locking device 7 is specifically made up of conductive rubber ring 8, thermal shrinkable sleeve housing 9 etc., it is inner that described ground connection chuck 4 is positioned at thermal shrinkable sleeve housing 9, one side opening of thermal shrinkable sleeve housing 9, remainder is closed, this open side is corresponding with the open side of ground connection chuck, described conductive rubber ring 8 is located on a side opening of thermal shrinkable sleeve housing 9, and is electrically connected with ground connection chuck 4.Earth connection exit 10 is located on described ground connection chuck 4.Insulation retaining ring 2 is located on action bars 1, for alert hand position, prevents from getting an electric shock.
Misoperation-proof locking device 7 operation principle of the present embodiment is more simple, because thermal shrinkable sleeve and conductive rubber are flexible material, therefore thermal shrinkable sleeve housing 9 can along all directions deformation, so consistent with conventional short-circuit earth connection when using, as long as ground connection chuck 4 is stretched out from the opening part of thermal shrinkable sleeve housing 9, hangs over relevant device again during operation.When ground connection chuck sensing equipment operates by operating personnel with preparing mounting, if equipment live, when thermal shrinkable sleeve housing 9 is in time having electric equipment, high voltage alive equipment will discharge to the conductive rubber ring 8 of pyrocondensation set of shells opening part, form obvious electric arc and frizzle, play obvious alarm effect, remind operating personnel equipment have electricity, must off-ground operation immediately; Simultaneously because conductive rubber ring 8 is electrically connected with ground connection chuck 4, the electrical discharge arc electric current of high-tension apparatus flows into the earth by this rubber ring, conductive rubber ring is caused to generate heat rapidly, because this conductive rubber is located on the opening part of thermal shrinkable sleeve housing, make thermal shrinkable sleeve housing heat shrinkable immediately, this opening part is shrunk to very little aperture, ground connection chuck 4 is enclosed in thermal shrinkable sleeve enclosure interior, now move back and forth in any case, also ground connection chuck 4 cannot be stretched from thermal shrinkable sleeve housing, earth connection cannot hang up, and serves the effect of forced blocking.Because thermal shrinkable sleeve itself possesses excellent insulation property, therefore no matter how operating personnel move back and forth, and equipment electric arc of discharge all can not be caused to cause accident.The present embodiment possesses perfect anti-incorrect manipulation deadlock function equally, even if personnel's cruelty operates by force, also can not cause accident, can become the last one impassable defence line preventing by mistake hanging earthing conductor serious accident.
The present embodiment is suitable for equally and uses with various indoor, outdoor earth connection, and compared with embodiment one, two, structure is more simply ingenious, and production and application is all very convenient.The present embodiment also can arrange last secondary earth connection discriminating gear, and principle is the same.
Short-circuit grounding wire on electric equipment, substantially all in order to ensure that overhaul of the equipments safety is arranged, need to recover power transmission once overhaul, if the short-circuit grounding wire carried additionally forgets dismounting before, just be equal to the equipment combined floodgate power transmission to ground short circuit, its serious consequence caused is self-evident equally.Often will overpay short-circuit grounding wire several local extensions during electric equipment interruption maintenance, as long as there is a pair to forget, 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, the present embodiment it be also provided with last secondary earth connection discriminating gear 16, omit and remove in order to overcome earth connection the potential safety hazard that causes.This device comprises an induction coil 17, AC signal and electricity 18, power circuit, 19, impedance measuring circuit 20 and a display circuit 21 occurs, 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 ground lead 11 coupled signal electric current, power circuit 19 is powered to ac signal circuit 18, make it generation AC signal, then this signal transports to induction coil 17 by impedance measuring circuit 20, this AC signal is loaded on ground lead 11 by the mode that electromagnetic induction is coupled by induction coil 17, if this earth connection is last secondary earth connection that this electric equipment is hung, then this AC signal can not form loop on ground lead, the input impedance of induction coil is just very large, this resistance value is shown by display circuit 20 by impedance measuring circuit, operating personnel are by the impedance of display, just can know that this secondary earth connection is last secondary earth connection, just can normal power transmission after removing.If this electric equipment also hangs with other earth connections do not removed, then this AC signal forms loop by the earth on ground lead, the input impedance of induction coil is just very little, this resistance value is shown by display circuit 20 by impedance measuring circuit equally, operating personnel are by the impedance of display, just know the earth connection this equipment also having and omits, could power transmission after needing dismounting clear.Line of induction snare should at ground lead three-phase river outlet, and so once test just can know whether three-phase ground line has been removed totally all.The AC signal frequency of ac signal circuit can not be too high or too low, to be good close to power frequency, prevents from the Transformer Winding on too high too low, the equipment of frequency or capacitor shunting from causing measuring inaccurate.Last secondary earth connection discrimination function that the present embodiment possesses, make it to have possessed prevent live connection of ground wire, prevent the dual of line combined floodgate power transmission with ground take precautions against effect, improve anti-misoperation performance of the present invention further, fundamentally can stop the electrical production accident because earth connection misoperation causes.Certainly, last secondary earth connection discriminating gear of the present embodiment also can be made up of other similar impedance loop test circuits.
It should be noted that, the above embodiments be all in order to illustrate the present invention instead of restriction the present invention, such as short-circuit grounding wire of the present invention both can be three-phase convergent current type also can be that three-phase is split type; Ground connection chuck both can be screw type also can be spring; Misoperation-proof locking device can adopt other similar machinery or electric locking devices completely; Last width earth connection discriminating gear both can make one with earth connection also can make detachable type; Etc..Many technical characteristics in different embodiments of the invention are interchangeable or omit; the optimum configurations of many elements can change as required; "a" or "an" before element of the present invention is not got rid of and is occurred multiple this element, and these changes all should belong to protection scope of the present invention.
Claims (8)
1. a simple type short-circuit grounding device, it is characterized in that, comprise action bars (1), ground connection chuck (4), earth connection exit (10), ground lead (11) and earth terminal chuck (5), described ground connection chuck (4) is connected with ground lead (11) by earth connection exit (10), described ground lead (11) is connected with earth terminal chuck (5), and described action bars (1) is provided with charged prior-warning device (6) near ground connection chuck (4) side;
Described charged prior-warning device (6) comprises misoperation-proof locking device (7), and operating personnel, when carrying out ground connection misoperation, by misoperation-proof locking device (7) locking, ensure the personal safety of operating personnel.
2. a kind of simple type short-circuit grounding device according to claim 1, it is characterized in that, described misoperation-proof locking device (7) comprises conductive rubber ring (8) and thermal shrinkable sleeve housing (9), it is inner that described ground connection chuck (4) is positioned at described thermal shrinkable sleeve housing (9), one side opening of described thermal shrinkable sleeve housing (9), remainder is closed, the open side of described thermal shrinkable sleeve housing (9) is corresponding with the open side of described ground connection chuck (4), described conductive rubber ring (8) is located on a side opening of thermal shrinkable sleeve housing (9), and be electrically connected with described ground connection chuck (4), when operating personnel are when carrying out ground connection misoperation, described conductive rubber ring (8) electric discharge forms electric arc and sound warning, and described conductive rubber ring (8) rapidly heating makes thermal shrinkable sleeve housing (9) heat shrinkable immediately, this opening part is shrunk to aperture, prevents misoperation from continuing action.
3. a kind of simple type short-circuit grounding device according to claim 2, it is characterized in that, described charged prior-warning device (6) comprises the impedance component be arranged in thermal shrinkable sleeve housing (9), described impedance component is connected with ground connection chuck (4), and series LED, neon lamp and or buzzer, when operating personnel are when carrying out ground connection misoperation, described ground connection chuck (4) is near there being electric equipment, and described LED, neon lamp or buzzer send sound and light alarm.
4. a kind of simple type short-circuit grounding device according to claim 3, it is characterized in that, described impedance component is in series by resistance, electric capacity or resistance capacitance.
5. a kind of simple type short-circuit grounding device according to claim 1, is characterized in that, described ground lead (11) for three-phase convergent current type or three-phase split type.
6. a kind of simple type short-circuit grounding device according to claim 1, is characterized in that, described ground connection chuck (4) is spiral or spring.
7. a kind of simple type short-circuit grounding device according to claim 1, it is characterized in that, 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 whether this functional arrangement is last secondary ground path.
8. a kind of simple type short-circuit grounding device according to claim 7, it is characterized in that, last width earth connection discriminating gear (16) described 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 |
|---|---|---|---|
| CN201410483252.4A CN104241969B (en) | 2014-09-19 | 2014-09-19 | A kind of simple type short-circuit grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410483252.4A CN104241969B (en) | 2014-09-19 | 2014-09-19 | A kind of simple type short-circuit grounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104241969A true CN104241969A (en) | 2014-12-24 |
| CN104241969B CN104241969B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410483252.4A Active CN104241969B (en) | 2014-09-19 | 2014-09-19 | A kind of simple type short-circuit grounding device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201486A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Portable short-circuit grounding device |
| CN104201485A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Short circuit grounding wire device with locking function |
| CN107104328A (en) * | 2014-09-19 | 2017-08-29 | 国家电网公司 | A kind of band aids in the anti-misoperation short-circuit grounding device of chuck |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175782A (en) * | 1996-08-31 | 1998-03-11 | 东洋电装株式会社 | Engine igniting coil device |
| CN2355436Y (en) * | 1998-08-14 | 1999-12-22 | 无锡供电局 | Pull-up grounding device |
| CN2588564Y (en) * | 2002-06-11 | 2003-11-26 | 刘叔铭 | Grounding wire with alarm |
| 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 |
-
2014
- 2014-09-19 CN CN201410483252.4A patent/CN104241969B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175782A (en) * | 1996-08-31 | 1998-03-11 | 东洋电装株式会社 | Engine igniting coil device |
| CN2355436Y (en) * | 1998-08-14 | 1999-12-22 | 无锡供电局 | Pull-up grounding device |
| CN2588564Y (en) * | 2002-06-11 | 2003-11-26 | 刘叔铭 | Grounding wire with alarm |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201486A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Portable short-circuit grounding device |
| CN104201485A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Short circuit grounding wire device with locking function |
| CN107104328A (en) * | 2014-09-19 | 2017-08-29 | 国家电网公司 | A kind of band aids in the anti-misoperation short-circuit grounding device of chuck |
| CN107104328B (en) * | 2014-09-19 | 2019-06-18 | 国家电网公司 | A kind of anti-misoperation short-circuit grounding device of band auxiliary collet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104241969B (en) | 2016-09-14 |
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