Dual Power Supply Structure and Working Method of Flameproof Valve Electric Device

Abstract

The invention discloses a double power source structure of an explosion insulation type valve electric device and working methods of the double power source structure. The double power source structure comprises a product terminal cavity, a connecting box body and a power source transfer switch cover. A connecting terminal is installed in the product terminal cavity. A control cable inlet assembly, a power cable inlet assembly, a standby power cable socket and a three-station three-row power transfer switch are installed on the connecting box body. A power source transfer switch panel and a power source transfer switch rotary knob shaft are installed on the power source transfer switch. A power source transfer switch rotary knob is installed at the outer end of the power source transfer switch rotary knob shaft. The working methods comprise a working method when a power supply of the electric device is a normal power source, and a working method when the power supply of the electric device is changed into a standby power source. The double power source structure of the explosion insulation type valve electric device and the working methods of the double power source structure have the advantages that in the emergence state of the electric device, fast switching between the normal power source and the standby power source can be achieved without the step of opening the connecting cavity of the device again for wire connection, and the double power source structure can be applied to the explosion insulation type electric device and completely meet the requirements for an explosion insulation environment.

Description

(1) Technical field: [0001] The invention relates to the technical field of valve electric devices, in particular to a dual power supply structure and working method of an explosion-proof valve electric device. (two) background technology: [0002] All valve electric devices have a power supply introduction structure, so that the on-site power cables can be used to lead into the device to realize power supply and complete the work of the electric device. Generally, electric devices are provided with a wiring cavity structure for introducing cables, so that power cables and control cables can be connected to the device itself. Usually, the structure of the wiring cavity provided by the electric device is two inlets, which are respectively used for the introduction of power cables and control cables. The imported power cable and control cable are respectively connected to the power terminal and control terminal inside the device to realize the power supply to the electric dev...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a dual power supply structure and working method of an explosion-proof valve electric device, which solves the technical difficulties in the known technology, so that the normal power supply facilities of the valve electric device cannot be timely In the case of power supply, the mobile power supply equipment equipped on site can be quickly used for emergency power supply, so as to quickly switch the power supply mode of the electric device in an emergency, ensure that the electric device can be operated and controlled normally, and minimize the risk and loss in time

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