Rapid disassembled type passive wireless induction electrified temperature measurement sensor

Abstract

The invention discloses a rapid disassembled type passive wireless induction electrified temperature measurement sensor. By use of the temperature measurement sensor, the rapid disassembly of the passive wireless induction electrified temperature measurement sensor can be implemented, the weight of a temperature sensor is reduced, and the mounting reliability, firmness and maintainability of the temperature sensor are greatly improved. A silicon steel sheet is locked by use of a ratchet shaft, a cam shaft and a clamping member; the structure is simple and the locking effect is good. The silicon steel sheet in the sensor is free of structural damage and can be recycled, thereby reducing the maintenance cost; the operation for mounting and replacing of the sensor is simple, and does not needa tool, the sensor is directly dismantled. An efficient contact mode is provided for a temperature measurement chip, the influence of heat dissipation on the temperature measurement precision is reduced, thus the characteristics of simple mounting, safe and reliable temperature measurement, precise temperature measurement and convenient maintenance are provided.

Description

technical field [0001] The invention relates to the technical field of sensor structures, in particular to a quick-installation and quick-disassembly sensor applied to the field of passive wireless temperature measurement in the electric power industry. Background technique [0002] Power equipment is in high-voltage, high-current and high-load operating conditions for a long time, and its electrical connection points are prone to abnormal temperature rise or even burnout, resulting in accidents. In recent years, many switch overheating accidents have occurred in power plants and substations, resulting in fires and large-scale blackouts. Solving the problem of switch overheating is the key to eliminating such accidents. Realizing online temperature monitoring is an important means to ensure the safe operation of high-voltage equipment . At present, the commonly used switchgear temperature monitoring methods have certain defects: active (battery) wireless temperature measure...

AI Technical Summary

Problems solved by technology

At present, the commonly used switchgear temperature monitoring methods have certain defects: active (battery) wireless temperature measurement requires irregular power outages to replace the battery, and the battery has problems such as potential explosion; infrared temperature measurement is a non-contact temperature measurement method. Measurement methods, but the accuracy and degree of automation cannot meet the actual requirements; optical fiber temperature measurement needs to be connected to external equipment with optical fiber, which belongs to wired measurement and has potential safety hazards

However, during the installation process of the existing inductive power-taking sensors, the silicon steel sheet needs to be wrapped around the primary equipment with alternating current, which is generally fixed by bolt fastening or friction fastening. The above two methods There are obvious disadvantages

The silicon steel sheet fastened by bolts will leave indentations on the surface after being pressed by the bolts, which will affect the secondary use of the silicon steel sheets. The temperature sensor is loose and slipped, causing a safety hazard inside the power distribution equipment

At the same time, it is extremely inconvenient to use screwdrivers and other installation tools in the small assembly space inside the power distribution equipment; the silicon steel sheet fastened by friction needs to be wound around multiple times, and fixed by the friction force between the silicon steel sheet and the induction coil skeleton. Difficult to install, it is necessary to overcome the frictional resistance in a narrow space and surround the silicon steel sheet many times, and at the same time, the fastening effect of the silicon steel sheet cannot be guaranteed, requiring additional fixing measures, which increases the weight of the sensor and the complexity of the tooling structure

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