Adjusting device of pneumatic film regulating valve

Abstract

The invention discloses an adjusting device of a pneumatic film regulating device, belonging to the field of automatic instruments. The adjusting device is characterized by comprising a bracket, a control box arranged on the bracket and a bracket tube welded on the bracket, wherein a pneumatic film regulating valve is arranged on the bracket tube; a valve position feedback rod is arranged on a valve rod of the pneumatic film regulating valve; a magnetic meter base is arranged on the pneumatic film regulating valve; a valve position sensor is arranged on the magnetic meter base; a digital current meter, a pressure meter, a precision pressure meter, a constant value unit, a gas source joint and an output joint are arranged on the panel of the control box; and a tool tray is placed on the bracket. The adjusting device disclosed by the invention adopts the opening degree of the measuring valve of the valve position sensor and digitally displays the opening degree, and has the characteristics of being simple and convenient to operate, accurate in reading, quick to install and fix, and simple in connection.

Description

technical field [0001] The invention relates to the calibration field of automatic instruments and meters, in particular to a calibration device for a pneumatic film regulating valve. Background technique [0002] Pneumatic film control valves are widely used in process automatic control systems. Since the pneumatic film control valves are in direct contact with various process media, their adjustment has become a regular work for instrument workers. However, due to their large size and weight, and complicated gas path connections, And there is no special calibration device, which makes it difficult to install and fix it. At the same time, since the displacement range of the valve stem is only more than ten millimeters, the operator has to squat down to observe the displacement of the valve stem with the naked eye during the adjustment process. The reading is very inconvenient and the reading error is very large. big. Contents of the invention [0003] The technical probl...

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Problems solved by technology

[0002] Pneumatic film control valves are widely used in process automatic control systems. Since the pneumatic film control valves are in direct contact with various process media, their adjustment has become a regular work for instrument workers. However, due to their large size and weight, and complicated gas path connections, And there is no special calibration device, which makes it difficult to install and fix it. At the same time, because the displacement range of the valve stem is only more than ten millimeters, the operator has to squat down to observe the displacement of the valve stem with the naked eye during the adjustment process. The reading is very inconvenient and the reading error is very large. Big

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