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Displacement measurement device for rectangular intelligent valve positioner

A technology of displacement measurement and intelligent valve, which is applied in the direction of valve operation/release device, valve device, valve details, etc., can solve the problems that cannot meet the development of process control, etc., and achieve easy compatibility and reliable connection, good versatility, and manufacturability Good results

Active Publication Date: 2016-04-13
ZHEJIANG KANGSAITE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Displacement measurement device for rectangular intelligent valve positioner
  • Displacement measurement device for rectangular intelligent valve positioner
  • Displacement measurement device for rectangular intelligent valve positioner

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Embodiment Construction

[0086] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0087] The present invention designs a rectangular intelligent valve positioner, which includes an upper cover 1, a base 2, a base sealing ring 3, an inner cover 4, an inner bracket 5, a displacement measuring device 6, a pneumatic unit device 7 and a shift positioning device 8. Wherein, the upper cover 1, the base 2, the sealing ring 3 of the base, the inner cover 4 and the inner support 5 constitute the electromagnetic shielding packaging shell device of the rectangular intelligent valve positioner. In the present invention, the base sealing ring 3 is processed with natural rubber.

[0088] In the present invention, the inner walls of the upper cover 1 and the base 2 are plated with a metal aluminum layer to realize electromagnetic shielding.

[0089] Cover 1

[0090] see figure 1 , Figure 1A , Figure 1B , Figure 1F , figure 2 , Figure 2A , ...

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Abstract

The invention discloses a displacement measurement device for a rectangular intelligent valve positioner. A rotary disc (6A) in the displacement measurement device is installed above a large angular travel gear (6B), a small angular travel gear (6C) is installed below the large angular travel gear (6B), and a main shaft (6D) penetrates through holes in the centers of the rotary disc (6A), the large angular travel gear (6B) and the small angular travel gear (6C); and an elastic assembly (6E), an FA bearing (6F), an FB bearing (6G) and a shaft sealing ring (6H) are arranged on the main shaft (6D) in a sleeving manner. By means of the displacement measurement device, a potentiometer and a gear shifting support (8D) are combined with the large angular travel gear (6B) and the small angular travel gear (6C), a replaceable structure is adopted for achieving displacement measurement control over single-action and dual-action air cylinders, and therefore the control efficiency can be effectively improved, and the gas amount can be effectively saved.

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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/12F16K37/00
CPCF16K31/12F16K37/0008
Inventor 董全林朱天宇于薇
Owner ZHEJIANG KANGSAITE VALVE