Detection grade actuator

Abstract

The invention provides a detection stage actuating mechanism. The detection stage actuating mechanism comprises a controller, a motor, a speed reducer and a final torque output end used for driving a valve to switch on and switch off, wherein the speed reducer is connected with the motor in a transmission manner; the final torque output end is connected with the output end of the speed reducer in a transmission manner; a torque sensor is fixedly attached onto the final torque output end; the torque data of the final torque output end, namely the torque data of operation of the valve, is obtained by the torque sensor; the data is transmitted to the controller; the final torque output end is directly connected with the torque sensor; the torque data of the final torque output end is directly obtained by the torque sensor. Compared with the conventional torque detection manner, the valve torque detecting manner has the advantages that the influence on the torque detection result caused by a plurality of factors such as multistage detection error, multistage transmission efficiency loss, multistage transmission deformation and the like can be avoided; the valve torque can be directly, accurately and stably detected.

Description

technical field [0001] The invention relates to a torque monitoring structure for electric actuators with large torque output used by large valves. Background technique [0002] Most of the torque required for valve opening or closing and the entire operation process is only based on the theoretical design value as a reference, and it is generally not tested at the factory. Therefore, in the actual selection of actuators matching the valve, it is easy to have selection deviations. If the selection is too small, the valve cannot be opened and closed under actual working conditions. If the selection is too large, it will waste resources, and the second is that when the valve fails and other stagnation occurs, the torque control of the actuator will not be able to control. Cause damage to valve stems, valve discs and other valve components, leading to production accidents. The reason why valve manufacturers seldom test the torque of valves is mainly reflected in: the original...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is: to overcome the deficiency in the prior art that the output torque of the electric actuator cannot be accurately measured and monitored, and to provide a detection level actuator

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