CN203434735U

CN203434735U - Dual power supply delay automatic switch starting circuit

Info

Publication number: CN203434735U
Application number: CN201320381035.5U
Authority: CN
Inventors: 赵树元
Original assignee: XIANGYUAN SHUYUAN ELECTRICAL APPLIANCE CO Ltd
Current assignee: XIANGYUAN SHUYUAN ELECTRICAL APPLIANCE CO Ltd
Priority date: 2013-06-29
Filing date: 2013-06-29
Publication date: 2014-02-12
Anticipated expiration: 2023-06-29

Abstract

The utility model provides a dual power supply delay automatic switch starting circuit which belongs to the technical field of motor power supply control devices. According to the technical problem to be solved, the circuit which can ensure accurate motor dual power supply automatic switch is provided. According to the adopted technical scheme, the dual power supply delay automatic switch starting circuit comprises circuit breakers, alternating current contactors, fuses and time relays; the coil of the alternating current contactor CJ1 is CJ1.1; the main contact is CJ1.2; the normally closed contacts are CJ1.3 and CJ1.4; the coil of the alternating current contactor CJ2 is CJ2.1; the main contact is CJ2.2; the normally closed contacts are CJ2.3 and CJ2.4; the coil of the time relay SJ1 is SJ1.1, and the delay closed contact is SJ1.2; the coil of the time relay SJ2 is SJ2.1, and the delay closed contact is SJ2.2. The dual power supply delay automatic switch starting circuit provided by the utility model is suitable for the coal mine field.

Description

A kind of duplicate supply time delay automatic switchover start-up circuit

Technical field

A kind of duplicate supply time delay of the utility model automatic switchover start-up circuit, belongs to electric electromechanics source control device technical field.

Background technology

Due to the particularity of colliery downhole production, underground work is very high to the requirement of safety, and especially, at the damp and hot working face of high temperature, safety in production is vital; Coal mine is arranged with a lot of power consumption equipments; the dragging motor of these equipment mostly adopts dual power supply; working power and stand-by power supply; can guarantee equipment when main power supply is broken down, be switched to stand-by power supply, however due to the complicated severe operational environment in colliery; interference signal is many; particularly some underground power supply systems often there will be short time power down, and " rolling electricity " situation occurs, and like this duplicate supply of motor is switched to the great potential safety hazard of bringing.

Utility model content

The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: a kind of circuit that can guarantee that motor duplicate supply accurately automatically switches is provided.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of duplicate supply time delay automatic switchover start-up circuit, comprising: circuit breaker, A.C. contactor, fuse and the time relay, wherein:

The coil of A.C. contactor CJ1 is CJ1.1, and its main contacts is CJ1.2, and its normally-closed contact has two, is respectively normally-closed contact CJ1.3, CJ1.4;

The coil of A.C. contactor CJ2 is CJ2.1, and its main contacts is CJ2.2, and its normally-closed contact has two, is respectively normally-closed contact CJ2.3, CJ2.4;

The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;

The coil of time relay sj 2 is SJ2.1, and its timing closing contact is SJ2.2;

The main circuit structure of motor D 1 is: inlet wire termination A, the B of circuit breaker DZ1, C the first three-phase alternating-current supply, be connected with the power end of motor D1 after the main contacts CJ1.2 of the leading-out terminal serial connection A.C. contactor CJ1 of described circuit breaker DZ1;

Inlet wire termination U, the V of circuit breaker DZ2, W the second three-phase alternating-current supply, be connected with the power end of motor D1 after the main contacts CJ2.2 of the leading-out terminal serial connection A.C. contactor CJ2 of described circuit breaker DZ2;

The control circuit structure of motor D 1 is: one end of fuse RT1 is connected with control circuit positive source, the other end of described fuse RT1 and connect one end of one end of the timing closing contact SJ1.2 of time relay sj 1, one end of timing closing contact SJ2.2 of time relay sj 2 and the normally-closed contact CJ1.4 of A.C. contactor CJ1 after be connected with one end of the normally-closed contact CJ2.4 of A.C. contactor CJ2;

The other end of the timing closing contact SJ1.2 of described time relay sj 1 be connected in series successively the normally-closed contact CJ2.3 of A.C. contactor CJ2, the coil CJ1.1 of A.C. contactor CJ1 with after fuse RT2, be connected with control circuit power cathode;

The other end of the timing closing contact SJ2.2 of described time relay sj 2 is connected with the coil CJ1.1 of A.C. contactor CJ1 and the line between fuse RT2 after being connected in series successively the normally-closed contact CJ1.3 of A.C. contactor CJ1 and the coil CJ2.1 of A.C. contactor CJ2;

After the coil SJ2.1 of the other end serial connection time relay sj 2 of the normally-closed contact CJ1.4 of described A.C. contactor CJ1, be connected with the coil CJ1.1 of A.C. contactor CJ1 and the line between fuse RT2;

After the coil SJ1.1 of the other end serial connection time relay sj 1 of the normally-closed contact CJ2.4 of described A.C. contactor CJ2, be connected with the coil CJ1.1 of A.C. contactor CJ1 and the line between fuse RT2.

The beneficial effect that the utility model compared with prior art has is: the utility model adds time delay switching function in the control circuit of motor, user can determine the time of switching according to specific circumstances, avoided the impact of interference signal on motor power such as " shaking electric " in colliery, prevent the generation of misoperation, the safety of assurance personnel and equipment, guarantees that the safety of coal production is carried out; The utility model control circuit is simple for structure, practical.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in more detail:

Fig. 1 is the main circuit diagram of the utility model motor;

Fig. 2 is the control circuit figure of the utility model motor.

Embodiment

As depicted in figs. 1 and 2, a kind of duplicate supply time delay of the utility model automatic switchover start-up circuit, comprising: circuit breaker, A.C. contactor, fuse and the time relay, wherein:

The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;

The coil of time relay sj 2 is SJ2.1, and its timing closing contact is SJ2.2;

The main circuit structure of motor D 1 is: inlet wire termination the first three-phase alternating-current supply of circuit breaker DZ1, is connected with the power end of motor D1 after the main contacts CJ1.2 of the leading-out terminal serial connection A.C. contactor CJ1 of described circuit breaker DZ1;

Inlet wire termination the second three-phase alternating-current supply of circuit breaker DZ2, is connected with the power end of motor D1 after the main contacts CJ2.2 of the leading-out terminal serial connection A.C. contactor CJ2 of described circuit breaker DZ2;

The utility model relies on the time relay to realize time delay switching function, user can determine the time of switching according to specific circumstances, avoided the impact of interference signal on motor power such as " shaking electric " in colliery, prevent the generation of misoperation, the safety of assurance personnel and equipment, guarantees that the safety of coal production is carried out.

By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make various variations.

Claims

1. a duplicate supply time delay automatic switchover start-up circuit, is characterized in that: comprising: circuit breaker, A.C. contactor, fuse and the time relay, wherein:

The coil of time relay sj 1 is SJ1.1, and its timing closing contact is SJ1.2;

The coil of time relay sj 2 is SJ2.1, and its timing closing contact is SJ2.2;