CN202495754U

CN202495754U - Mine intrinsically safe vacuum electromagnetic starter protection device

Info

Publication number: CN202495754U
Application number: CN2012200645436U
Authority: CN
Inventors: 李放
Original assignee: HUAINAN WANTAI ELECTRONICS CO Ltd
Current assignee: HUAINAN WANTAI ELECTRONICS CO Ltd
Priority date: 2012-02-26
Filing date: 2012-02-26
Publication date: 2012-10-17
Anticipated expiration: 2022-02-26

Abstract

The utility model discloses a mine intrinsically safe vacuum electromagnetic starter protection device, comprising a three-phase AC input line, a controller U, vacuum contactors KM1 and KM2, and intermediate relays ZJ1 and ZJ2. The device of the utility model has the advantages of simple structure and easy realization, and through cooperation among a protector, the vacuum contactors and the intermediate relays, safety of electrical equipment working under the mine is improved.

Description

Mine intrinsic safety type vacuum electromagnetic starter protective device

Technical field

The utility model relates to the mine vacuum electromagnetic starters field, is specially a kind of mine intrinsic safety type vacuum electromagnetic starter protective device.

Background technology

Operational environment is complicated under the ore deposit; Be full of various flammable explosive gas, so the electric equipment under the ore deposit adopts generally vacuum electromagnetic starter to control, to improve the fail safe of electric equipment work under the ore deposit; If vacuum electromagnetic starter breaks down, then can cause serious safety problem.Vacuum electromagnetic starter protective device function is simple in the prior art, can't adapt to complex operating environment under the ore deposit.

The utility model content

The utility model purpose provides a kind of mine intrinsic safety type vacuum electromagnetic starter protective device, to solve the problem that prior art vacuum relay protective device function simply can't adapt to operational environment under the ore deposit.

In order to achieve the above object, the technical scheme that the utility model adopted is:

Mine intrinsic safety type vacuum electromagnetic starter protective device; Comprise and have access to the three-phase alternating current incoming line of isolating reversing switch HK; It is characterized in that: comprise that also model is protector U, the control transformer CT1 of WTFJ1-80+30; Have access to current transformer LH1, LH2 on the said protector; And guide's control relay JHK1, JHK2; Said three-phase alternating current incoming line is divided into two-way along separate routes; The first via is the current transformer LH1 of three-phase alternating current incoming line process protector U along separate routes; And the first via along separate routes three-phase alternating current incoming line is incorporated into impedance RC1 is arranged, and the second the tunnel three-phase alternating current incoming line is through the current transformer LH2 of protector U along separate routes, and the second the tunnel incorporate on the three-phase alternating current incoming line along separate routes impedance RC2 is arranged; Also lead to the primary coil that bypass inserts transformer CT1 on the three-phase alternating current incoming line along separate routes from the first via; And the first via that the inserts transformer CT1 primary coil bypass of three-phase alternating current incoming line along separate routes wherein has access to porcelain insurance RD on the cross streams incoming line, have access on secondary coil of said transformer CT1 push-button switch TA3, with the parallel branch that push-button switch TA3 connects, said parallel branch comprises four branch roads; Wherein be in series with the protection output normally opened contact BJ1 of intermediate relay ZJ 1, protector U, the starting output normally opened contact SJ1 of protector U in first branch road; Be in series with the protection output normally opened contact BJ2 of intermediate relay ZJ 2, protector U, the starting output normally opened contact SJ2 of protector U in second branch road, be in series with the normally opened contact ZJ1-2 of vacuum contactor KM1, intermediate relay ZJ 1 in the 3rd branch road, be in series with the normally opened contact ZJ2-2 of vacuum contactor KM2, intermediate relay ZJ 2 in the 4th branch road; The said protector U and the first via are serially connected with contact KM1-2, the normally-closed contact ZJ1-3 of intermediate relay ZJ 1, the ZJ1-4 of vacuum contactor KM1 along separate routes between the three-phase alternating current incoming line; Protector U and the second tunnel is serially connected with contact KM2-2, the normally-closed contact ZJ2-3 of intermediate relay ZJ 2, the ZJ2-4 of vacuum contactor KM2 along separate routes between the three-phase alternating current incoming line, also have access to button QA1, QA2, TA1, TA2 on the protector U, and contact KM1-1, the KM2-1 of vacuum contactor; Also have access to the contact KM1-1-3 of vacuum contactor on the said first via shunt three-phase alternating current incoming line, also have access to the contact KM2-1-3 of vacuum contactor on the second tunnel shunt three-phase alternating current incoming line.

The utility model circuit structure is simple; Be easy to realize; Cooperate with vacuum contactor, auxiliary relay through protector; Can effectively realize overcurrent, short-circuit protection, improve the applicability of vacuum electromagnetic starter operational environment under the ore deposit, and then improve the fail safe of electric equipment work under the ore deposit vacuum electromagnetic starter.

Description of drawings

Fig. 1 is the utility model circuit theory diagrams.

Embodiment

As shown in Figure 1.Mine intrinsic safety type vacuum electromagnetic starter protective device; Comprise and have access to the three-phase alternating current incoming line of isolating reversing switch HK; Comprise that also model is protector U, the control transformer CT1 of WTFJ1-80+30; Have access to current transformer LH1, LH2 on the said protector; And guide's control relay JHK1, JHK2; The three-phase alternating current incoming line is divided into two-way along separate routes; The first via is the current transformer LH1 of three-phase alternating current incoming line process protector U along separate routes; And the first via along separate routes three-phase alternating current incoming line is incorporated into impedance RC1 is arranged, and the second the tunnel three-phase alternating current incoming line is through the current transformer LH2 of protector U along separate routes, and the second the tunnel incorporate on the three-phase alternating current incoming line along separate routes impedance RC2 is arranged; Also lead to the primary coil that bypass inserts transformer CT1 on the three-phase alternating current incoming line along separate routes from the first via; And the bypass that inserts the first via shunt three-phase alternating current incoming line of transformer CT1 primary coil wherein has access to porcelain insurance RD on the cross streams incoming line, the parallel branch that has access to push-button switch TA3, connects on secondary coil of transformer CT1 with push-button switch TA3, and parallel branch comprises four branch roads; Wherein be in series with the protection output normally opened contact BJ1 of intermediate relay ZJ 1, protector U, the starting output normally opened contact SJ1 of protector U in first branch road; Be in series with the protection output normally opened contact BJ2 of intermediate relay ZJ 2, protector U, the starting output normally opened contact SJ2 of protector U in second branch road, be in series with the normally opened contact ZJ1-2 of vacuum contactor KM1, intermediate relay ZJ 1 in the 3rd branch road, be in series with the normally opened contact ZJ2-2 of vacuum contactor KM2, intermediate relay ZJ 2 in the 4th branch road; The protector U and the first via are serially connected with contact KM1-2, the normally-closed contact ZJ1-3 of intermediate relay ZJ 1, the ZJ1-4 of vacuum contactor KM1 along separate routes between the three-phase alternating current incoming line; Protector U and the second tunnel is serially connected with contact KM2-2, the normally-closed contact ZJ2-3 of intermediate relay ZJ 2, the ZJ2-4 of vacuum contactor KM2 along separate routes between the three-phase alternating current incoming line, also have access to button QA1, QA2, TA1, TA2 on the protector U, and contact KM1-1, the KM2-1 of vacuum contactor; Also have access to the contact KM1-1-3 of vacuum contactor on the first via shunt three-phase alternating current incoming line, also have access to the contact KM2-1-3 of vacuum contactor on the second tunnel shunt three-phase alternating current incoming line.

Claims

1. mine intrinsic safety type vacuum electromagnetic starter protective device; Comprise and have access to the three-phase alternating current incoming line of isolating reversing switch HK; It is characterized in that: comprise that also model is protector U, the control transformer CT1 of WTFJ1-80+30; Have access to current transformer LH1, LH2 on the said protector; And guide's control relay JHK1, JHK2; Said three-phase alternating current incoming line is divided into two-way along separate routes; The first via is the current transformer LH1 of three-phase alternating current incoming line process protector U along separate routes; And the first via along separate routes three-phase alternating current incoming line is incorporated into impedance RC1 is arranged, and the second the tunnel three-phase alternating current incoming line is through the current transformer LH2 of protector U along separate routes, and the second the tunnel incorporate on the three-phase alternating current incoming line along separate routes impedance RC2 is arranged; Also lead to the primary coil that bypass inserts transformer CT1 on the three-phase alternating current incoming line along separate routes from the first via; And the first via that the inserts transformer CT1 primary coil bypass of three-phase alternating current incoming line along separate routes wherein has access to porcelain insurance RD on the cross streams incoming line, have access on secondary coil of said transformer CT1 push-button switch TA3, with the parallel branch that push-button switch TA3 connects, said parallel branch comprises four branch roads; Wherein be in series with the protection output normally opened contact BJ1 of intermediate relay ZJ 1, protector U, the starting output normally opened contact SJ1 of protector U in first branch road; Be in series with the protection output normally opened contact BJ2 of intermediate relay ZJ 2, protector U, the starting output normally opened contact SJ2 of protector U in second branch road, be in series with the normally opened contact ZJ1-2 of vacuum contactor KM1, intermediate relay ZJ 1 in the 3rd branch road, be in series with the normally opened contact ZJ2-2 of vacuum contactor KM2, intermediate relay ZJ 2 in the 4th branch road; The said protector U and the first via are serially connected with contact KM1-2, the normally-closed contact ZJ1-3 of intermediate relay ZJ 1, the ZJ1-4 of vacuum contactor KM1 along separate routes between the three-phase alternating current incoming line; Protector U and the second tunnel is serially connected with contact KM2-2, the normally-closed contact ZJ2-3 of intermediate relay ZJ 2, the ZJ2-4 of vacuum contactor KM2 along separate routes between the three-phase alternating current incoming line, also have access to button QA1, QA2, TA1, TA2 on the protector U, and contact KM1-1, the KM2-1 of vacuum contactor; Also have access to the contact KM1-1-3 of vacuum contactor on the said first via shunt three-phase alternating current incoming line, also have access to the contact KM2-1-3 of vacuum contactor on the second tunnel shunt three-phase alternating current incoming line.