Self-bouncing device for power distribution cabinet based on principle of thermal expansion and cold contraction

Abstract

The invention relates to the technical field of power distribution cabinets and particularly relates to a thermal expansion and cold contraction principle-based self-bouncing device for a power distribution cabinet. The device comprises a cabinet door, wherein a magnetic block is fixedly connected to the inner wall of the right side of the cabinet door, a cabinet body is movably connected to the right side of the cabinet door, and a piston groove is formed in the middle of the cabinet body, an inner wall of the piston groove is movably connected with a piston block, a left inner wall of the piston block is fixedly connected with a resistor, and the middle of the piston block is fixedly connected with an electromagnet. According to the self-bouncing device for the power distribution cabinetbased on the principle of thermal expansion and cold contraction, through cooperative use of the air groove and the sliding block, when the temperature in the power distribution cabinet is too high,air in the air groove is thermally expanded, the sliding block moves towards the left side at the moment, the electromagnet is powered off, and the piston block and the cabinet body move towards the left side under the acting force of the sliding block and the spring; and the cabinet door is automatically opened so that the effect of automatically opening the cabinet door during overheating is achieved, heat is timely discharged, and safety of the power distribution cabinet is improved.

Description

technical field [0001] The invention relates to the technical field of power distribution cabinets, in particular to a self-popping device for power distribution cabinets based on the principle of thermal expansion and cold contraction. Background technique [0002] The power distribution cabinet is the general name of the motor control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits. The motor control center is used in the occasions where the load is concentrated and there are many circuits. The electric energy is distributed to the nearest load. This level of equipment should provide protection, monitoring and control for the load. The current power distribution cabinet often encounters some problems when it is used, which leads to problems in the use of the power distribution cabinet. [0003] When the current power distribution cabinet is in use, it often occurs that the inside of the power...

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Problems solved by technology

[0002] The power distribution cabinet is the general name of the motor control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits. The motor control center is used in the occasions where the load is concentrated and there are many circuits. Distribute the electric energy to the nearest load. This level of equipment should provide protection, monitoring and control for the load. The current power distribution cabinet often encounters some problems when using it, which leads to problems in the use of the power distribution cabinet.

[0003] When the current power distribution cabinet is in use, it often occurs that the inside of the power distribution cabinet is overheated, causing the internal temperature to be too high, causing the resistance value of the line to be too large, which affects the transmission efficiency of the circuit, and the internal temperature is too high, and there is still a fire. Potential safety hazards, resulting in the possibility of spontaneous combustion of the power distribution cabinet, causing unnecessary economic losses and reducing the safety of the power distribution cabinet

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