Valve stroke and switching time measuring circuit, device, system and method

Abstract

The invention relates to a valve stroke and switching time measuring circuit, device, system and method. The measuring circuit comprises a single-chip microcomputer circuit, a key circuit, a laser displacement sensor and a display screen. The laser displacement sensor is connected with the single-chip microcomputer circuit through a signal line. The key circuit and the display screen are connectedwith the single-chip microcomputer circuit. The single-chip microcomputer circuit is used for calculating the valve stroke and the time of the valve opening and closing process according to changes of output signals of the laser displacement sensor. The keying circuit serves as an input module and is used for starting or closing the measuring circuit and adjusting the laser displacement sensor; the display screen is used for displaying the calculation result of the single-chip microcomputer circuit. According to the technical scheme, the measurement precision and the measurement efficiency are improved; the measurement difficulty and the risk that maintainers mistakenly touch equipment are reduced; the field working time is shortened, the distance between maintainers and the pipeline in the measurement process is increased, and the exposure dose of the maintainers is reduced.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a valve stroke and switching time measurement circuit, device, system and method. Background technique [0002] as attached figure 1 As shown, in order to achieve remote control, the valve is usually designed with an electric or pneumatic drive mechanism. The drive mechanism drives the valve stem and disc to move up and down to realize the switch of the valve, thereby remotely controlling the on-off of the medium in the pipeline. For straight-stroke valves such as electric gate valves, pneumatic switching valves, and pneumatic control valves, it is usually required to measure the stroke and switching time of the valve after the relevant maintenance process of this type of valve is completed, so as to verify the valve stroke and switching time (opening time) after maintenance. Time and closing time) two important performance parameters are still within the design range, thus...

AI Technical Summary

Problems solved by technology

In the process of measuring these two parameters, the valve needs to be switched on and off many times, and it needs the cooperation of many maintenance personnel to complete it, and the measurement efficiency is low.

[0004] In addition, due to the complex location of the on-site valve installation space and the surrounding installation of pipelines or other equipment, the maintenance personnel need to be close to the valve when performing this work, and it is often difficult to find an ideal measurement position by placing the tape measure against the valve stem and other valve parts , thus affecting the measurement work

At the same time, due to the need for personnel to be close to the valve during the measurement process, it also increases the radiation protection pressure and the risk of personnel accidentally touching the equipment

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