Valve torque measuring device

Abstract

The invention provides a valve torque measuring device comprising a base; a lifting plate installed on the base through a lifting connecting component; a lifting oil cylinder connected with the lifting plate and the base; a rotating shaft rotatably mounted on the lifting plate through a rotating shaft positioned; and a torque measuring assembly mounted on the rotating shaft. The torque measuring assembly includes a telescopic housing, a telescopic oil cylinder, a hydraulic motor, and a torque sensor. The telescopic housing is telescopically installed on one side of the rotating shaft. The front end of the telescopic housing is equipped with a rotatable measuring rod. The front end of the measuring rod is sleeved with a sleeve. The telescopic oil cylinder is connected with the telescopic housing and the rotating shaft. The output shaft of the hydraulic motor is connected to the measuring rod through a shaft coupling. The torque sensor is connected to the measuring rod to measure the valve torque according to the rotation of the measuring rod. The valve torque measuring device has the advantages of high measurement accuracy, low manual labor intensity and suitability for large-scalevalve torque measurement.

Description

technical field [0001] The invention relates to the field of valves, in particular to a measuring device for valve torque. Background technique [0002] Torque is the main parameter for selecting the driving device of the valve, and its value is an important indicator to measure the economy and quality of the valve. Usually the valve opening and closing torque value is obtained by theoretical calculation or direct measurement with a torque wrench. However, as the nominal diameter and nominal pressure of the valve increase, the difference between the theoretically calculated approximate value and the actual measured value becomes more significant. It can only be obtained after stabilization. In view of the complicated procedures during the actual measurement, the torque value of the valve is increased in the evaluation of the insurance factor, which reduces the economy and market competitiveness. In addition, the structure of the torque wrench for measurement determines th...

AI Technical Summary

Problems solved by technology

However, with the increase of the nominal diameter and nominal pressure of the valve, the difference between the theoretically calculated approximate value and the actual measured value becomes more significant. can only be obtained after stabilization

In view of the complicated procedures in the actual measurement, the torque value of the valve is increased in the evaluation of the insurance factor, which reduces the economy and market competitiveness

In addition, the structure of the torque wrench for measurement determines that its operation process is mostly manual, and there are problems such as low precision, high labor intensity, and low efficiency when measuring large torque.

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