Capacitive vibration sensor and power plant fan diagnosis system and method

Abstract

The invention discloses a capacitive vibration sensor which comprises a shell body, wherein a first insulating spacer, an upper spring, a second insulating spacer, a first conductive rod, a third insulating spacer, a lower spring and a fourth insulating spacer which are sequentially connected are arranged between a top plate and a bottom plate in the shell bodyfrom top to bottom, a resin supporting column is further arranged on the bottom plate in the shell body, the top part of the resin pillar is provided with the second conductive rod, the first conductive rod and the second conductive rodare parallel to each other, three capacitor plates which are parallel to each other are arranged between the first conductive rod and the second conductive rod, the bottom plate of the shell is further provided with a lead terminal unit, four lead wires are led out from the lead terminal unit, specifically, the firstlead wire is grounded, the second lead wire is connected with the first conductiverod, the third lead wire is connected with one end of the capacitor plate A, and the fourth wire is connected with one end of the capacitor plate C. The capacitive vibration sensor can realize acquisition of fan vibration signal data. The invention further discloses a power plant fan diagnosis system and method.

Description

technical field [0001] The invention belongs to the technical field of state monitoring of electric power equipment, and in particular relates to a capacitive vibration sensor, and also relates to a power plant blower diagnosis system and a power plant fan diagnosis method based on the capacitive vibration sensor. Background technique [0002] In recent years, the operation scale of my country's power system has been continuously expanding, and it has become very important to ensure the normal operation of various electrical equipment in the power system. With the continuous upgrading of the industry, the requirements for fans are getting higher and higher, especially for the efficiency, safety and performance of fans, which makes the fan equipment more automatic, more complex in structure, and more functional. More variety. [0003] The fan will generate vibration signals during normal operation, but if the vibration of the fan exceeds the standard, it will cause damage to...

AI Technical Summary

Problems solved by technology

[0003] The fan will generate vibration signals during normal operation, but if the vibration of the fan exceeds the standard, it will cause damage to the bearing seat or motor bearing, loosening of the motor anchor bolts, damage to the fan casing, blades and air duct, and motor burning and heating. , which reduces the working performance of the fan and affects the normal work

Seriously, it may cause accidents due to vibration, endangering personal health and working environment

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