CN2038275U

CN2038275U - Electromagnetic locking device with double electric power supply applicable to both inlet and outlet wire

Info

Publication number: CN2038275U
Application number: CN 88204983
Authority: CN
Inventors: 孙奉贤
Original assignee: MEILING CHEMICAL PLANT
Current assignee: MEILING CHEMICAL PLANT
Priority date: 1988-04-25
Filing date: 1988-04-25
Publication date: 1989-05-24

Abstract

The utility model relates to an electromagnetic latching device with double electric power supply applicable to both inlet and outlet wire, which is a double electric power supply electromagnetic latching device having few elements and low cost without splitting an inlet and outlet wire and an inlet and outlet wire switch cabinet; utilizing the uniqueness of the position of the universal transfer switch, the electromagnetic latching device with double electric power supply applicable to both inlet and outlet wire is matched with the auxiliary contact of a voltage relay, an oil breaker and an isolation switch to comprise a control procedure circuit, which causes an electromagnetic latch installed beside the oil breaker and the operating grip of the isolation switch to be unlocked and latched to obtain the double electric power supply safe latching requirement. The electromagnetic latching device with double electric power supply applicable to both inlet and outlet wire can be used in a high-pressure power distribution station with two-way power supply and one way inlet and outlet wire share.

Description

Electromagnetic locking device with double electric power supply applicable to both inlet and outlet wire

The utility model relates to the electric-magnetic lock circuit arrangement of a dual power supply, particularly about two-way power supply power supply is being arranged, and the electromagnetic locking device that uses in the shared high tension substation of one tunnel turnover line is arranged.

In the power network of China, for the power distribution station that does not have direct current operative power source, the operating mechanism of oil circuit breaker extensively adopts manual-operating mechanism at present.For the safety interlocking that supplies power with double circuit of this class power distribution station, mechanical interlock and electrical equipment two classes of interlocking are arranged, mechanical interlock has two kinds again: (1) mechanical linkage formula.When the switch cubicle close together that supplies power with double circuit, on the operating mechanism of two-way oil circuit breaker or isolating switch, the device for mechanical connecting rod makes one tunnel power supply, another road locking.(2) sleeve operating grip.When the switch cubicle that supplies power with double circuit distance is far away, can't realize mechanical linkage, a special sleeve operating grip can be installed on the isolating switch handle, this handle has only one, and one the tunnel powers, another Lu Yinwu operating grip and locking.The electrical equipment interlock, for manually operated oil circuit breaker, be with being installed in the other electromagnetic lock of incoming power switch cubicle isolator operation handle, being in series with another road normally closed auxiliary contact of electric power incoming line oil circuit breaker respectively, playing locking effect each other, therefore, existing duplicate supply exclusive circuit, only have blocking function, do not possess unlocking function, all must the turnover line separately, the wiretap cabinet will be passed in and out separately, interlocking could be realized.In power network, often there is the shared supply power mode of turnover line in the two-way electric power incoming line, and its electric power incoming line also uses as the power supply outlet sometimes.To this supply power mode, for realizing the duplicate supply safety interlocking, often a distribution outlet is built in employing in addition, and newly-increased switch cubicle will pass in and out line and divide open shop, carry out the way of interlocking then.

The purpose of this utility model provides an electric-magnetic lock circuit very simple, that compared with prior art cost is low, will not separate with turnover wiretap cabinet by power supply turnover line.

According to the shared duplicate supply electromagnetic locking device of turnover line of the present utility model, adopt duplicate supply electrical equipment interlock circuit, manually operated oil circuit breaker, with being installed in incoming power switch cubicle isolating switch 1G ₁And 2G ₁The electromagnetic lock 1D and the 2D on operating grip next door, the solution of the utility model purpose is because universal change over switch KK and oil circuit breaker 1DL, 2DL and isolating switch 1G ₁, 2G ₁Normally closed contact series connection, often open and normally closed contact with voltage relay 1PH, 2PH, 3PH again, the normally closed contact of 4PH, PH, 6PH is in series, and forms the control program circuit.

According to control program circuit of the present utility model, it contains the power supply entering line exclusive circuit, electromagnetic lock 1D and 2D each connect with oil circuit breaker 2DL normally closed contact, more respectively with universal change over switch contact KK ₁Or KK ₂Series connection, the normally closed auxiliary contact of electromagnetic lock 3D and 2DL, isolating switch 2G ₁Normally closed auxiliary contact series connection is again with KK ₅The 1G of contact parallel connection ₁Normally closed auxiliary contact series connection is with 1D, 2D, 3D, the parallel connection of 4D loop, again with voltage relay 1PH, 2PH, 3PH normally closed contact, the normally closed auxiliary contact of 1DL, KK ₄The contact series connection is connected on the control power supply.

According to control program circuit of the present utility model, it also contains the release circuit that turnover line bridging line is done the outlet use, with 2D, 4D electromagnetic lock loop in parallel, again with normally closed contact, 1PH, 2PH, the normal opened contact of 3PH, the KK of voltage relay 4PH, 5PH, 6PH ₃The contact series connection is connected on the control power supply with the power supply entering line exclusive circuit.

The purpose of this utility model, characteristics and advantage can further be understood by the following explanation that accompanying drawing of the present utility model is carried out.

Fig. 1 is according to dual power supply system main wiring diagram of the present utility model;

Fig. 2 is according to duplicate supply electric-magnetic lock control principle winding diagram of the present utility model;

Fig. 3 is according to duplicate supply electric-magnetic lock protection philosophy winding diagram of the present utility model.

Referring now to Fig. 1,, shown the dual power supply main wiring mode, the 1st, electric power incoming line, the 2nd, turnover line shared line has the isolating switch Second Mate, 1G in the 1 and 2 two-way electric power incoming line switch cubicles ₁And 1G ₂Or 2G ₁And 2G ₂, 1G ₁And 2G ₁Respectively have F ₁One of-4 type auxiliary switch have F in addition in the cabinet ₁One of the oil circuit breaker 1DL of-8 type auxiliary switches or 2DL, current transformer 1LH or 2LH one cover, the operating mechanism of oil circuit breaker is the electronic tripping operation of closing by hand.

1YH, 2YH are respectively bus-bar potential transformer and line voltage distribution instrument transformer, and its secondary voltage is 100V.1YH, 2YH and fuse 1RD, 2RD, isolating switch 1G _H, 2G _NTogether, press Fig. 1 wiring, be loaded on separately in the GG-1A-54 switch cubicle.

1D, 2D electromagnetic lock are loaded on isolating switch 1G respectively ₁, 2G ₁Operating grip avris, but the pin inspiration of electromagnetic lock ejection are in order to control 1G ₁, 2G ₁Deciliter.

3D, 4D electromagnetic lock are loaded on oil circuit breaker 1DL, 2DL operating grip avris respectively, make the operating mechanism of the oil circuit breaker hook that can't put in place with the pin of electromagnetic lock, prevent from not draw back the isolating switch of another road power supply after one road power supply from having a power failure and mistake is closed oil circuit breaker.

Fig. 2 has shown duplicate supply electric-magnetic lock control wiring circuit.The employed electric elements of this circuit except that the auxiliary contact of the direct current magnetic padlock of having stated, oil circuit breaker isolating switch, all are loaded in the GG-1A-54 line voltage distribution instrument transformer cabinet, and this cabinet is as duplicate supply electric-magnetic lock circuit control cubicle.

Universal change over switch KK is placed on position 1, its contact KK ₁And KK ₄Closed simultaneously, oil circuit breaker 2DL and isolating switch 2G ₁Normally closed auxiliary contact closure, then electromagnetic lock 1D, 3D energising, isolating switch 1G successively closes ₂, 1G ₁, oil circuit breaker 1DL, bus is charged, 1D cuts off self-lock, turnover line shared line 2 can't charged locking because of

electromagnetic lock

2D, 4D, bus is from incoming power 1 power supply, red eye 1HD is luminous.When electric power incoming line 1 power failure, 1PH, 2PH, 3PH, 7PH decompression discharge, 1DL automatic trip, 1D energising, 1G ₁Draw back self-locking.

Universal change over switch KK is placed on the position III, its contact KK ₂And KK ₄Closure, isolating switch 2G2,2G1 oil circuit breaker 2DL are successively closed in

electromagnetic lock

2D, 4D energising, and 2D cuts off self-lock, and electric power incoming line 1 can't charged locking because of 1D, 3D, and bus is from 2 power supplies of turnover line bridging line, and red eye 2HD is luminous.

When electric power incoming line 1 power supply, when turnover line shared line 2 does not have electricity, universal change over switch is placed on the position II, its contact KK ₂, KK ₃, KK ₅Closure is given 2D, 4D energising release,

isolating switch

2G ₂, 2G ₁Can successively close a floodgate with oil circuit breaker 2DL and to send electricity, red eye 3HD is luminous.

Because 4PH, 5PH, 6PH are connected on line voltage distribution instrument transformer 2YH secondary circuit, have only when turnover line bridging line 2 does not have electricity, just can do outlet and send electricity, otherwise 2D, 4D locking can't be sent.

As long as from 1 power supply, no matter universal change over switch is placed on any position to bus, the isolating switch 1G of electric power incoming line 1 ₁With oil circuit breaker 1DL,, can't operate and send because of 1D, 3D no-voltage dead locking.

Fig. 3 has shown dual power supply protection philosophy wiring circuit.Two-way electric power incoming line high-tension switch cabinet; the relay protection wiring that is adopted is identical with homemade switch cubicle commonly used; 1LJ, 2LJ are overcurrent protections; 3LJ, 4LJ are fast tripping protections; TQ is the oil circuit breaker breaking coil, and 2ZJ is a control DC power supply supervisory relay, and 1ZJ is the auxiliary relay to the TQ energising; HD is the combined floodgate indicator light, and LD is the breaking indicator light.

Among Fig. 3,7PH or 8PH voltage relay normally closed contact are often opened auxiliary contact with oil circuit breaker 1DL or 2DL connect, in parallel with 1LJ, 2LJ normal opened contact again, give the energising of the SJ time relay, as the o-volt protection of duplicate supply interlocking.7PH connects 1 switch cubicle o-volt protection, and 8PH connects 2 switch cubicle o-volt protections, and this o-volt protection is different with switch cubicle commonly used.As long as bus loss of pressure, 1DL and the tripping operation of 2DL oil circuit breaker are because 3D, 4D electromagnetic lock are at isolating switch 2G ₁, 1G ₁Do not cut off self-lock before having disjunction, the oil circuit breaker operating mechanism is hung not rise to the bait to operate and is sent.Close oil circuit breaker again after preventing to have a power failure by mistake.

When combined floodgate send electricity, by time relay time-delay and adjustment oil circuit breaker main contact and the auxiliary contact poor oil circuit breaker combined floodgate chattering of avoiding turn-on time.As 1PH and 4PH two normally closed contacts are arranged, 7PH, 8PH voltage relay can replace with 1PH, 4PH respectively and omit.

Circuit arrangement described in the utility model, advantage be not will the power supply line and switch cubicle separately, can realize safety interlocking. The use element is few, and cost is low, and is simple to operate, and reliable in action can be widely used in the two-way Power supply, has in the shared transformation and distribution system of one road line.

Claims

1, the shared duplicate supply electromagnetic locking device of a kind of turnover line adopts duplicate supply electrical equipment interlock circuit, and manually operated oil circuit breaker is with being installed in incoming power switch cubicle isolating switch IG ₁And 2IG ₁The electromagnetic lock 1D and the 2D on operating grip next door, be in series with another road electric power incoming line oil circuit breaker 2DL and the normally closed auxiliary contact of 1DL respectively, locking each other, therefore can only locking can't release, feature of the present utility model is universal change over switch KK and oil circuit breaker 1DL, 2DL and isolating switch 1G ₁, 2G ₁Normally closed contact series connection, again with often the opening and normally closed contact of voltage relay 1PH, 2PH, 3PH, the normally closed contact of 4PH, 5PH, 6PH is in series, form the control program circuit, this circuit contains the power supply entering line exclusive circuit, electromagnetic lock 1D and 2D each connect with oil circuit breaker 2DL normally closed contact, more respectively with universal change over switch contact KK ₁And KK ₂Series connection, the normally closed auxiliary contact of electromagnetic lock 3D and 2DL, isolating switch 2G ₁Normally closed auxiliary contact series connection, electromagnetic lock 4D connects with the normally closed auxiliary contact of 2DL, again with KK ₅The 1G of contact parallel connection ₁Normally closed auxiliary contact series connection, with 1D, 2D, 3D, 4D, loop parallel connection, again with voltage relay 1PH, 2PH, 3PH normally closed contact, the normally closed auxiliary contact of 1DL, KK ₄The contact series connection is connected on the control power supply, and this circuit also contains turnover line bridging line does the release circuit that outlet is used, with 2D, 4D electromagnetic lock loop in parallel in the exclusive circuit, again with the normally closed contact of voltage relay 4PH, 5PH, 6PH, the normal opened contact of 1PH, 2PH, 3PH, KK ₃The contact series connection is connected on the control power supply with the power supply entering line exclusive circuit.