Isolating switch operation moment and rotating angle detection device

Abstract

The present invention relates to an isolating switch operation moment and rotating angle detection device. The device comprises a drive motor (1), a moment sensor (2),an angle sensor (3), a connectionrod (4), a controller (7) and a data collector (9). The isolating switch operation moment and rotating angle detection device employs the drive motor (1) to drive the rotation of the moment sensor (2),the angle sensor (3) and the connection rod (4) on a basis without damaging and changing original members of an isolating switch, one end of the connection rod (4) is inserted into an operation mechanism box manual operation input port of an isolating switch to drive motion of the isolating switch so as to accurately detect the operation moment and the rotating angle of the isolation switch in the motion process, draw a corresponding operation moment-rotating angle curve and provide important reference data for determination of an isolation switch mechanical condition.

Description

technical field [0001] The invention relates to a high-voltage isolating switch, in particular to an outdoor high-voltage isolating switch, in particular to a device for detecting the operating torque and rotation angle of the isolating switch. Background technique [0002] In the high-voltage switchgear of the power system, the high-voltage isolating switch is the most used type, generally 2 to 4 times the amount used by the circuit breaker. The transmission mechanism of the isolating switch is mainly composed of multi-stage connecting rods, shaft pins and bearings. After long-term operation, due to atmospheric corrosion, loss of grease, accumulation of foreign matter and dust, etc., the kinematic pair of the transmission mechanism is prone to corrosion, jamming, etc. In the bad case, the physical process is that the friction coefficient μ at the kinematic pair increases when the rust is stuck, and the corresponding frictional resistance torque M f =μF N Then increase. W...

AI Technical Summary

Problems solved by technology

[0003] The existing detection methods for the operating torque of the isolating switch include: 1) attaching strain gauges on the surface of the isolating switch operating rod to detect the operating torque during the operation of the isolating switch. The technical requirements are high, and when the placement of the patch is not appropriate, the measurement result will deviate greatly and the reliability of the actual application will be low; 2) The operating torque of the isolated actuation process is measured by the torque sensor installed on the handle of the manual operation mechanism, "a The detection device and detection method of outdoor high-voltage isolating switch" (application number is CN201410333992.X) patent is to use this method to manually measure the operating torque of the isolating switch during the action process. This method is simple to operate, but because it is measured by shaking the handle manually, It is difficult to ensure that the rotation speed of the handle is consistent during the measurement process, resulting in large fluctuations in the measurement data, and the reliability of the measurement results is not high; 3) Change the original shaft system of the isolating switch, disconnect the operating rod, and between the disconnected operating rods Install torque sensors, angle sensors, etc. Although this detection method can accurately measure the operating torque of the disconnector during the action process under laboratory conditions, it is difficult to popularize and apply it in substations and other application sites. First, it is not allowed to change the high voltage switch in these actual application sites. The original shaft system to avoid introducing new faults due to the change of its shaft system, and the second is that the cost of installing a set of detection equipment for each isolating switch is too high

[0004] Among the above three detection methods for the operating torque of the isolating switch, the first and second detection methods do not need to change the original shaft system of the isolating switch, but cannot accurately measure the operating torque of the isolating switch during the action process; although the third detection method can accurately Measure the operating torque of the isolating switch during the action process, but the original shafting of the isolating switch needs to be removed and changed, so it is not feasible to apply to substations and other sites

At present, on the basis of not destroying and changing the original shaft system of the isolating switch, there is no device that can accurately detect the operating torque-rotation angle mechanical characteristic curve of the isolating switch

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