CN204576122U - A kind of intelligent convergence control cabinet of improvement - Google Patents

Abstract

The utility model discloses an improved intelligent central control cabinet. Compared with the traditional intelligent central control cabinet, the circuit breaker operating handle 4KK is removed, and a pair of contacts are added to the circuit breaker operating handle SA to the closed relay HHJ. , and add two unidirectional conduction diodes at the place where the remote control opening and closing circuit is short-circuited with the closing relay HHJ. In this way, the secondary node added to the circuit breaker operating handle SA is only used to start the closed relay HHJ. At this time, if the circuit breaker operating handle SA is manually operated on the spot, the closed relay HHJ can be started, and then the standby automatic switching is blocked. . Compared with the prior art, the intelligent central control cabinet of the utility model reduces the operation steps of the equipment operators, and eliminates the potential safety hazards to personnel and equipment caused by on-site maintenance and debugging when operating the handle SA of the circuit breaker.

Description

An improved smart control cabinet

technical field

The utility model relates to an online monitoring system, in particular to an improved intelligent collection and control cabinet.

Background technique

Intelligent huikong cabinet is an online monitoring system cabinet successfully developed by using advanced detection technology, control technology, communication technology and years of research on closed combined electrical appliances. It uses a single-chip microcomputer to monitor and control the closed combined electrical appliances online.

As shown in Figure 2, a traditional intelligent HSBC cabinet generally includes a manual operation circuit, a three-phase operating mechanism, a three-phase closing circuit and a three-phase tripping circuit. The manual operation circuit has a manual/remote control trip circuit, a manual/remote control closing circuit and a closing relay HHJ; the manual/remote control trip circuit includes a remote trip switch D013 connected in series between the positive power supply and the negative power supply, a circuit breaker operating handle 4KK and a relay STJ1-STJ3, manual/remote control closing circuit includes remote closing switch D014 connected in series between positive power supply and negative power supply, circuit breaker operating handle 4KK and relays SHJ1-SHJ3. After closing, one end of the two groups of coils of the relay HHJ is respectively connected to the corresponding end of the circuit breaker operating handle 4KK, and the other end is respectively connected to the negative power supply.

As shown in Figure 2, in addition to the above-mentioned circuit breaker operating handle 4KK, the traditional intelligent central control cabinet also has a circuit breaker operating handle SA, wherein the circuit breaker operating handle 4KK is normally disconnected, and the circuit breaker can pass The breaker operating handle 4KK is used for opening and closing operations, and the circuit breaker operating handle SA can also be used for opening or closing. This mode not only increases the operation steps of equipment operators, but also brings potential safety hazards to personnel and equipment. For example: when operating the circuit breaker operating handle SA for on-site maintenance and debugging, the operating handle 4KK of the circuit breaker is in the disconnected state, the relay HHJ in the smart terminal cannot be started after closing, and the automatic switching of the standby cannot be blocked manually (only when the relay HHJ is energized after closing) After that, the control system will judge that it is manual operation, so as to control the corresponding circuit to close and prepare for self-injection), and rear-projection operation will bring danger to maintenance personnel.

There are two ways to simplify the circuit breaker operating handle of the circuit breaker: one is to cancel the circuit breaker operating handle SA, as shown in Figure 3, this method connects the circuit breaker operating circuit of the intelligent terminal into the local manual operation circuit, The fault points are added, and the circuit breaker opening and closing operation cannot be performed when the intelligent terminal is overhauled. Another way is to cancel the circuit breaker operating handle 4KK, as shown in Figure 4, although this way is to jump the circuit breaker directly, but when the circuit breaker is manually operated on the spot, the remote trip switch D013 and the remote control switch D104 are in the off state , still can not start the closed relay HHJ, manual can not block the automatic switch.

Utility model content

The purpose of the utility model is to provide an improved smart control cabinet with simplified structure and safety.

In order to achieve the above object, the utility model adopts the following technical solutions:

An improved intelligent central control cabinet, including a manual operation circuit, a three-phase operating mechanism, a three-phase closing circuit and a three-phase tripping circuit; the manual operation circuit has a manual/remote control tripping circuit, a manual/remote control closing circuit and a closing relay HHJ; The manual/remote control trip circuit includes the remote trip switch D013 connected in series between the positive power supply and the negative power supply, a secondary contact of the local/remote handle HK and the relay STJ1-STJ3, and the manual/remote control closing circuit includes a series connection with the positive power supply The remote closing switch D014 between the negative power supply, the other secondary contact of the local/remote handle HK and the relay SHJ1-SHJ3; the circuit breaker operating handle SA has two secondary contacts, of which the first secondary contact is connected in a conventional way The two sets of coils of the rear relay HHJ are respectively connected between the positive power supply and the negative power supply through the second secondary contact of the circuit breaker operating handle SA; the two sets of coils of the rear relay HHJ are the first coil and the second coil, and the first coil A first diode is connected between one end of the second secondary contact corresponding to the operating handle SA of the circuit breaker and the manual/remote control trip circuit, and the anode of the first diode corresponds to the manual/remote control trip circuit, and the negative pole corresponds to the second One coil, the second coil corresponds to the second secondary contact of the circuit breaker operating handle SA. A second diode is connected between one end of the second secondary contact and the manual/remote control closing circuit, and the anode of the second diode corresponds to the manual/remote control switch. The closing circuit and the negative pole correspond to the second coil.

After adopting the above scheme, compared with the traditional intelligent central control cabinet, the improved intelligent central control cabinet of the utility model removes the circuit breaker operating handle 4KK, and adds a pair of contacts to the circuit breaker operating handle SA to the closed relay HHJ, And add two one-way conduction diodes at the short-connection point between the remote control opening and closing circuit and the closing relay HHJ. In this way, the secondary node added to the circuit breaker operating handle SA is only used to start the closed relay HHJ. At this time, if the circuit breaker operating handle SA is manually operated on the spot, the closed relay HHJ can be started, and then the standby automatic switching is blocked. . Compared with the prior art, the intelligent central control cabinet of the utility model reduces the operation steps of the equipment operators, and eliminates the potential safety hazards to personnel and equipment caused by on-site maintenance and debugging when operating the handle SA of the circuit breaker.

Description of drawings

Fig. 1 is a schematic circuit diagram of the utility model;

Fig. 2 is a circuit schematic diagram of a traditional intelligent central control cabinet;

Fig. 3 is a circuit schematic diagram of an improved idea of a traditional intelligent centralized control cabinet;

Fig. 4 is a schematic circuit diagram of another improvement idea of the traditional intelligent central control cabinet.

Detailed ways

The utility model is an improved intelligent control cabinet, as shown in Fig. 1, including a manual operation circuit, a three-phase operating mechanism, a three-phase closing circuit and a three-phase tripping circuit.

The manual operation circuit has a manual/remote control trip circuit, a manual/remote control closing circuit and a closing relay HHJ.

The manual/remote control trip circuit includes the remote control trip switch D013 connected in series between the positive power supply +KM1 and the negative power supply -KM1, a secondary contact of the local/remote handle HK (contact 1, 2) and relays STJ1-STJ3. The manual/remote control closing circuit includes the remote closing switch D014 connected in series between the positive power supply +KM1 and the negative power supply -KM1, the other secondary contact of the local/remote handle HK (contact 5, 6) and the relay SHJ1-SHJ3 .

The circuit breaker operating handle SA has two pairs of contacts, the first auxiliary contact is contacts 1, 2, 3, 4, and the second auxiliary contact is contacts 5, 6, 7, 8. When the circuit breaker operating handle SA is closed, contact 5 , 6 is connected, the contacts 7 and 8 are connected when the gate is opened, and the zero position is disconnected. Wherein the first secondary contact is connected in a conventional manner.

After closing, the two groups of coils of the relay HHJ are respectively connected between the positive power supply +KM1 and the negative power supply -KM1 through the second secondary contact of the circuit breaker operating handle SA. Take the two sets of coils of the closed relay HHJ as the first coil and the second coil, the seventh contact of the circuit breaker operating handle SA is connected to the positive power supply +KM1, the eighth contact is connected to one end of the first coil, and this end of the first coil is connected to The first diode is connected between the manual/remote control trip circuit, and the anode of the first diode corresponds to the manual/remote control trip circuit, the negative pole corresponds to this end of the first coil, and the other end of the first coil is connected to the negative power supply -KM1; the 5th contact of the circuit breaker operating handle SA is connected to the positive power supply +KM1, and the 6th contact is connected to one end of the second coil, and a second diode is connected between this end of the second coil and the manual/remote control closing circuit , and the positive pole of the second diode corresponds to the manual/remote control closing circuit, the negative pole corresponds to this end of the second coil, and the other end of the second coil is connected to the negative power supply -KM1.

After adopting the above scheme, compared with the traditional intelligent central control cabinet, the improved intelligent central control cabinet of the utility model removes the circuit breaker operating handle 4KK, and adds a pair of contacts to the circuit breaker operating handle SA to the closed relay HHJ, And add two one-way conduction diodes at the short-connection point between the remote control opening and closing circuit and the closing relay HHJ. In this way, the secondary node added to the circuit breaker operating handle SA is only used to start the closed relay HHJ. At this time, if the circuit breaker operating handle SA is manually operated on the spot, the closed relay HHJ can be started, and then the standby automatic switching is blocked. . Compared with the prior art, the intelligent central control cabinet of the utility model reduces the operation steps of the equipment operators, and eliminates the potential safety hazards to personnel and equipment caused by on-site maintenance and debugging when operating the handle SA of the circuit breaker.

Claims (1)

1. the intelligent convergence control cabinet improved, comprises manual operation loop, three-phase operation mechanism, three-phase closing circuit and three-phase trip(ping) circuit, manual operation loop has manually/remote control trip(ping) circuit, manually/remote control closing circuit and relay HHJ after closing, manually/remote control trip(ping) circuit comprises and is serially connected with remote control trip switch D013 between positive supply and negative supply, the secondary contact of on the spot/distant place handle HK and relay STJ1-STJ3, and manually/remote control closing circuit comprises and is serially connected with remote control closing switch D014 between positive supply and negative supply, another secondary contact of on the spot/distant place handle HK and relay SHJ1-SHJ3, breaker operator handle SA has two secondary contacts, and wherein the first secondary contact connects in the usual way, and after closing, two groups of coils of relay HHJ are connected between positive supply and negative supply respectively by the second secondary contact of breaker operator handle SA, be the first coil and the second coil to close two groups of coils of rear relay HHJ, first coil corresponds between one end of the second secondary contact of breaker operator handle SA and manually/remote control trip(ping) circuit and is connected with the first diode, and the positive pole of the first diode corresponds to manually/remote control trip(ping) circuit, negative pole corresponds to the first coil, second coil corresponds between one end of the second secondary contact of breaker operator handle SA and manually/remote control closing circuit and is connected with the second diode, and the positive pole of the second diode corresponds to manually/remote control closing circuit, negative pole corresponds to the second coil.