Fire-fighting cable detection device

Abstract

The invention relates to a fire-fighting cable detection device. The device is used for detecting the voltage drop of a fire-fighting cable. The device comprises an input circuit, a rectifying circuit, a comparison circuit, an amplifying circuit, and an output display circuit; and the input circuit, the rectifying circuit, the comparison circuit, the amplifying circuit, and the output display circuit are connected with one another sequentially. The device of the invention can be carried by a user conveniently. By means of setting a threshold value, LED lamps are driven to be turned on or off,so that whether the fire-fighting cable is qualified or not can be detected directly, and a tester is facilitated to perform judgment; the device of the invention is provided with a built-in dial plate, so that the voltage drop numerical value of a detected product can be directly displayed; and the tester can adjust a potentiometer and observe the dial plate to judge whether a wire fracture problem exists so as to determine whether to discord the detected product.

Description

technical field [0001] The invention relates to the field of detection devices, in particular to a detection device for fire-fighting cables. Background technique [0002] Fire safety is an area of ​​people's livelihood that is related to the personal safety of our citizens. With the advancement of urbanization in our country, a large number of high-rise residential buildings have been erected to alleviate the shortage of land. However, the higher the building height, the higher the safety level requirements. Safety equipment requirements are also higher. [0003] According to the requirements of my country's recent fire safety law and building design codes, some important equipment in buildings with high fire safety requirements require that the voltage drop of the cables connected to them must not exceed 20%, so as to ensure that the relevant important equipment can operate in a stable environment. work at rated voltage. Especially for the solenoid valve linkage equipment...

AI Technical Summary

Problems solved by technology

Especially for the solenoid valve linkage equipment such as smoke exhaust valve, tuyere, and starting cylinder in the gas fire extinguishing system, as a real "big power consumer", the excessive operating current of the linkage equipment in the power bus causes a line voltage drop, which in turn leads to low voltage of the equipment. Abnormal startup or even no startup, losing the original intention of setting fire safety

Therefore, in the prior art of fire-fighting cables, there is no related simple and easy-to-carry proprietary detection device

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