CN2144889Y - Locking device for preventing grounding wire from being connected with circuit breaker in power system - Google Patents
Locking device for preventing grounding wire from being connected with circuit breaker in power system Download PDFInfo
- Publication number
- CN2144889Y CN2144889Y CN 93201122 CN93201122U CN2144889Y CN 2144889 Y CN2144889 Y CN 2144889Y CN 93201122 CN93201122 CN 93201122 CN 93201122 U CN93201122 U CN 93201122U CN 2144889 Y CN2144889 Y CN 2144889Y
- Authority
- CN
- China
- Prior art keywords
- locking device
- error
- circuit breaker
- grounding wire
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000009422 external insulation Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 208000033999 Device damage Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model provides a power system prevents taking earth connection to close circuit breaker blocking device. When a grounding wire is hung on a line for line maintenance, electrical equipment or personal casualty accidents can be caused by mistakenly closing the circuit breaker. The locking device has A, B two parts which are respectively connected to the control circuit of the circuit breaker and installed in the earth wire bar, and the two parts share one metal part as the conductive material or the earth wire bar, and the parts can not be used in the control circuit of each circuit breaker. Therefore, the accidents of equipment and personal injury and death caused by the fact that the circuit breaker is closed by the control loop with the grounding wire are effectively prevented.
Description
The present invention is a kind of locking device that is applied in the electric power system, and particularly a kind of can preventing utilizes the control loop of circuit breaker＜to comprise closing circuit〉should a kind of locking device of the circuit breaker of circuit when circuit (or electric equipment) maintenance hangs with grounding wire device.
Breaker control circuit such as Fig. 1.When circuit breaker is in open position, as the KK that＜claims the KK switch〉control switch
5-8After contact or similar ZJ contact are connected, corresponding controlled breaker closing.But, can cause electric equipment or human casualty accident when mistake is closed circuit breaker if there is the people overhauling on the circuit that this circuit breaker is controlled under hanging with the earth connection situation, its economic loss is huge often.
Task of the present invention is that a kind of locking device will be provided, and it utilizes the control loop of circuit breaker to make breaker closing and connect this circuit in the time of preventing to hang with earth connection on the line.
Task of the present invention is finished as follows: this locking device by the B that is connected to the A part (Fig. 3) between M in the breaker control circuit, N 2 points (Fig. 2) and is loaded on grounding wire device partly (Fig. 4) form the shared metal parts (2) that can make 2 conductings of M, N can make the grounding wire device restore funcitons again of these two parts.
When circuit not during hanging earthing conductor, (2) unloaded from grounding wire device be loaded on the A part, at this moment utilize KK switch or similar ZJ contact can make breaker closing.When line outage palpus hanging earthing conductor, after circuit breaker disconnects, take off (2) from the A part and be loaded on the B part of grounding wire device, make grounding wire device recover its function.At this moment form a cut-off point from the position that connect (2) originally in the breaker control circuit, even KK contact or similar ZJ contact are connected, circuit breaker can not close a floodgate.
The shared metal partss of A, B two parts (2) because of this device, hanging earthing conductor or circuit breaker are in "on" position either one or the other during line maintenance, and (2) with two threaded to owe being connected by the insulation anti-error ring effect of (4) of semicircle electric conductor (7) specific, can not be general, thereby prevent switching on earth wire, ensured personal safety and avoided device damage.
Fig. 1 is the schematic diagram of breaker control circuit.
Fig. 2 is the breaker control circuit figure behind the access metal parts (2).
Fig. 3 is the front view of locking device A part.
Fig. 4 is the front view of locking device B part.
Below in conjunction with accompanying drawing invention is further described:
Two geostationary threaded owing in locus have screw thread on its cylindrical of the formed screw rod of semicircle electric conductor (7) in the A part, it is a concentric circles with the anti-error cover of insulation (6), the two all is fixed on the insulator foot (9), and (7) draw M, N 2 points that are connected among Fig. 2 through lead-out wire (8) and lead-in wire screw (11).Anti-error breach (3) when (2) that have external insulation matches with the anti-error tooth of insulation (4), when being threaded onto the bottom of (7) together downwards, M, N can utilize KK switch or ZJ to make breaker closing after connecting, and (1) is the external insulation of (2), and (10) are the base fixed screw.
When need hanging ground-wire during the maintenance circuit, after circuit breaker disconnects, (2) are screwed out from (7), be used for the earth connection line rod articulation of B part, ply-yarn drill (12) is linked to each other with the excellent body of line (15) and fix, at this moment the line rod has just recovered action function.
When connecting ply-yarn drill (12), rotate on swivel nut (14) top together for preventing (12) and articulation body (13), be respectively equipped with the boss and the breach of stop on (14) and (13).
Claims (6)
1, a kind of locking device, particularly the anti-band of electric power system earth connection closes the locking device of circuit breaker, it is characterized in that this device formed the shared metal partss of these two parts (2) by the B part institute that is connected on the A part in the breaker control circuit and be contained in the grounding wire device.
2, locking device according to claim 1, it is characterized in that the A part is by two threaded semicircle electric conductor (7) and anti-error covers of external insulation (6) owed that are fixed on the insulator foot (9), can be threaded onto the anti-error ring of insulation (5) and (2) on (7), the electric conductor (8) and lead-in wire screw (11) and the base hold-down screw (10) that are fixed on (7) are formed.
3, locking device according to claim 2 is characterized in that the appearance of (2) has insulator (1), and there are anti-error breach of spill (3) or the anti-error tooth of convex in the lower end.
4,, on the anti-error ring (5) that it is characterized in that insulating anti-error tooth of convex (4) or the anti-error breach of spill specific and that (3) match are arranged according to claim 2 or 3 described locking devices.
5, locking device according to claim 1 is characterized in that B part by earth connection ply-yarn drill (12) and line rod body (15), and articulation body (13) and being used to connects the metal parts (2) of articulation body and the excellent body of line and forms.
6, locking device according to claim 5 is characterized in that the line rod body top in the B part is fixed with swivel nut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93201122 CN2144889Y (en) | 1993-01-12 | 1993-01-12 | Locking device for preventing grounding wire from being connected with circuit breaker in power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93201122 CN2144889Y (en) | 1993-01-12 | 1993-01-12 | Locking device for preventing grounding wire from being connected with circuit breaker in power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2144889Y true CN2144889Y (en) | 1993-10-27 |
Family
ID=33785705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93201122 Expired - Fee Related CN2144889Y (en) | 1993-01-12 | 1993-01-12 | Locking device for preventing grounding wire from being connected with circuit breaker in power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2144889Y (en) |
-
1993
- 1993-01-12 CN CN 93201122 patent/CN2144889Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |