Rectangular intelligent valve locator

Abstract

The invention discloses a rectangular intelligent valve locator. The intelligent valve locator comprises an upper cover (1), a base (2), a base sealing ring (3), an inner protection cover (4), an inner support (5), a displacement measuring device (6), a pneumatic unit device (7) and a gear shifting locating device (8). A magnetic shielding package shell device of the rectangular intelligent valve locator is formed by the upper cover (1), the base (2), the base sealing ring (3), the inner protection cover (4) and the inner support (5). The displacement measuring device (6), the pneumatic unit device (7) and the gear shifting locating device (8) are arranged in the package shell device. An external air source is utilized in the intelligent valve locator for driving the stroke of an air cylinder for pushing a valve executing mechanism, and the control over the aperture of an adjusting type valve or a switching valve is achieved. Universal and high-reliability elements and a special structure are combined, all functional blocks are interconnected in a combined stacking manner, control of single-action air cylinders and double-action air cylinders is achieved, the control efficiency can be effectively improved, and the air amount is reduced.

Description

technical field [0001] The invention relates to a positioning mechanism, more particularly, to a rectangular intelligent valve positioner. It is a positioner that uses an external air source to drive the stroke of the cylinder that pushes the valve actuator, and realizes the control of the opening of the regulating valve or the switching valve. Background technique [0002] The automatic control of the production process is referred to as process control, which occupies an extremely important position in industrial production. The quality of process control largely depends on process control instruments, which include transmitters, regulators, actuators and various auxiliary control devices. An auxiliary control instrument is called a valve positioner, which is the object of competing research in various countries. It determines the adjustment quality of process control to a certain extent. With the development of process control level, the positioner must also continue to ...

AI Technical Summary

Problems solved by technology

[0004] At present, the research focus of the positioner is mainly on the intelligent valve positioner. The electric valve positioner used adopts the principle of mechanical force balance, which has some shortcomings and cannot meet the needs of the development of process control.

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