Oil-engine interlock device, power supply equipment and method for supplying power to shelter equipment

Abstract

An oil-generator interlocking device, comprising a first AC contactor KM1 and a second AC contactor KM2, the normally open contact of the first AC contactor KM1 is connected to the first oil-generator power supply and the on-board electrical equipment between the power sources; the normally closed contact of the first AC contactor KM1 is connected between the mains power supply and the power supply of the off-vehicle electrical equipment; the coil of the first AC contactor KM1 is connected to the first diesel engine power supply; The normally open contact of the second AC contactor KM2 is connected between the power supply of the second diesel engine and the power supply of the on-board electrical equipment; the normally closed contact of the second AC contactor KM2 is connected to the third diesel engine between the power supply and the power supply of the electrical equipment under the vehicle; the coil of the second AC contactor KM2 is connected to the second oil engine power supply, and the present invention also includes a power supply equipment including an oil engine interlock device and power supply to the shelter equipment Methods. The invention realizes the function that multiple oil trucks cannot work at the same time and have interlocking protection.

Description

technical field [0001] The invention relates to the technical field of shelters, in particular to an oil-engine interlock device, power supply equipment and a method for supplying power to shelter equipment. Background technique [0002] At present, the oil generators used in the shelter can work on the vehicle or off the vehicle. When there are two or more oil machines working, in order to ensure the safety of equipment and staff, it is necessary to automatically identify the working status of the oil machines through the control of the circuit, so that multiple oil machines cannot work at the same time and have the function of interlock protection . [0003] CN 201639354U disclosed a power switching circuit on November 17, 2010, the first AC contactor, the second AC contactor, and the third AC contactor respectively connect 380V mains, 220V mains, and oil generator 220V power To the output terminal of the power supply, the first relay, the second relay, and the third rel...

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Problems solved by technology

[0003] CN 201639354U disclosed a power switching circuit on November 17, 2010, the first AC contactor, the second AC contactor, and the third AC contactor respectively connect 380V mains, 220V mains, and oil generator 220V power To the output terminal of the power supply, the first relay, the second relay, and the third relay are used for interlocking and interlocking between the three contactors, so as to solve the trouble of manual switching on the existing shelter or van, and when multiple inputs The problem of manual switching is inconvenient; however, this circuit design is only applicable to the situation where one oil truck works, and it cannot realize the function of multiple oil trucks working alone and having interlock protection

[0004] CN 202309209U disclosed a power supply switching circuit on July 04, 2012. The main contact of the first AC contactor is connected between the input of the oil generator I and the contact of the transfer switch, and the normally open main contact of the second AC contactor is connected to Between the oil generator II input and the transfer switch contact, the normally closed main contact is connected between the oil generator II input and the transfer switch contact, and the other end of the first AC contactor normally closed auxiliary contact is connected to the oil generator II input L line; the mains input is connected between the contacts of the transfer switch to solve the problem of power supply switching in the shelter and give priority to power supply to the equipment; however, this power supply switching circuit cannot disconnect the oil generator I when the oil generator II is working The switch cannot realize the oil-generator interlock function, but can only realize the power supply switching function; and the circuit needs to manually switch the switch when switching between the mains power supply and the oil-generator power supply, which is troublesome to operate and poor in safety

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