Device for measuring angular displacement of angular travel regulating valve by using Hall sensor

Abstract

The invention relates to a device for measuring angular displacement of an angular travel regulating valve by using a Hall sensor. The device comprises an angular travel pneumatic actuating mechanism, a positioner, an induction magnetic strip, a Hall sensor mechanism, a fisheye connecting rod and an output shaft connecting frame rod, the angular travel pneumatic actuating mechanism comprises an actuating mechanism output shaft for rotating output, the actuating mechanism output shaft is connected with a valve opening and closing piece of the valve body, the induction magnetic strip is installed on the actuating mechanism output shaft, and the positioner obtains valve position information through the rotation angle of the induction magnetic strip. The Hall sensor mechanism comprises a base, a copper magnetic steel seat, a Hall sensor, an upper cover, a device side link and a rotating shaft; one end of the fisheye connecting rod is connected with the device connecting frame rod, and the other end is connected with the output shaft connecting frame rod. The rotation of the angular travel valve is converted into the rotation of the rotating shaft of the Hall sensor mechanism, then the rotation angle of the rotating shaft is measured through the Hall sensor, the rotation angle of the angular travel valve can be measured, and the whole device is simple in structure and convenient to disassemble, assemble and maintain.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a device for measuring the angular displacement of an angular stroke regulating valve by using a Hall sensor. Background technique [0002] At present, with the wide application of regulating valves in petrochemical and other industries, the user's requirements for the regulating performance of regulating valves are also constantly improving, which requires the use of reliable testing devices for performance testing of regulating valves. At present, there are relatively few adjustment performance testing methods for quarter-turn control valves. There are three main reasons for this: 1. Generally, quarter-turn control valves reflect the angular displacement of the valve by measuring the angular displacement of the output shaft of the actuator, and the output shaft of the actuator is installed and positioned. The installation space of the detection device is limited; 2. The ins...

AI Technical Summary

Problems solved by technology

At present, there are relatively few adjustment performance testing methods for quarter-turn control valves. There are three main reasons for this: 1. Generally, quarter-turn control valves reflect the angular displacement of the valve by measuring the angular displacement of the output shaft of the actuator, and the output shaft of the actuator is installed and positioned. The installation space of the detection device is limited; 2. The installation of the detection device has a great influence on the measurement results, and the installation requirements for the detection device are relatively high; 3. There are various forms of quarter-stroke valves, and the detection device needs Good applicability, universal for quarter-turn valves of various specifications

Therefore, there is no simple and reliable detection method in the existing technology, and it is difficult to detect the performance of quarter-turn control valves in batches, which in turn affects the product quality of quarter-stroke control valves.

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