A hydraulic turbine servomotor intelligent leak detection system and method thereof

Abstract

The invention provides an intelligent leakage detection system of a servomotor of a water turbine and a method thereof and belongs to the technical field of the leakage detection of the servomotors of the water turbines. According to the technical scheme, the intelligent leakage detection system of the servomotor of the water turbine comprises a sensor set connected with the servomotor. The sensor set is connected with an upper computer with a fault diagnosis function through a data acquisition card to form a data transmission channel. The upper computer is connected with a hydraulic station through a PLC to form a control loop. The intelligent leakage detection system of the servomotor of the water turbine has the beneficial effects that the intelligent leakage detection system and method are adopted, the on-line detection of the servomotor on the spot is achieved, the defect that a hydraulic servomotor can only be dismounted to be subject to the leakage analysis is overcome. Meanwhile, the intelligent leakage detection system and method provides an intelligent computer detection method, thereby getting rid of the defect of traditional artificial and unaided eye detection.

Description

technical field [0001] The invention relates to the technical field of leak detection for hydraulic turbine servomotors, in particular to an intelligent leak detection system and method for hydraulic turbine servomotors. Background technique [0002] The main function of the servomotor is to convert the oil pressure into the push-pull force of the adjusting rod, thereby driving the blade angle adjustment operating mechanism (connecting rod-rotary arm mechanism) to convert the axial movement into the rotation of the blade around the pivot, so as to realize the blade placement angle change. Due to the oil leakage of the servomotor, when driving the blade angle adjustment, it is easy to cause the 22 servomotors of the water turbine unit to fail to synchronize, or a single servomotor cannot move, and the blade angle cannot be adjusted; on the other hand, the servomotor is in the sealing test. When the piston is at both ends of the cylinder, it is not possible to perform a leak ...

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Problems solved by technology

Due to the oil leakage of the servomotor, when driving the blade angle adjustment, it is easy to cause the 22 servomotors of the water turbine unit to fail to synchronize, or a single servomotor cannot move, and the blade angle cannot be adjusted; on the other hand, the servomotor is in the sealing test. When the piston is at both ends of the cylinder, it is not possible to perform a leak detection test on the piston at any position of the cylinder at present, and due to the manufacturing reasons of the cylinder or the damage to the cylinder during use, the leakage of the servomotor may occur in the The piston is in any position of the oil cylinder. In practical application, it is found that when the servomotor leaks, it will cause the oil temperature to rise and the vibration spectrum of the servomotor to increase. However, the relationship between the oil temperature of the servomotor and the vibration spectrum of the servomotor has not been detected yet. detection system

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