Jam-proof intelligent valve positioner

A technology of intelligent valve and positioner, applied in the direction of valve details, valve device, valve operation/release device, etc., can solve the problems of unstable input current, unstable and fluctuating air source interference, excessive input, etc., to ensure positioning Stability, stable positioning without drift, and the effect of reducing maintenance costs

Active Publication Date: 2017-05-31
博流控制技术(浙江)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The positioner is mostly used in various industries such as chemical industry, coal, petroleum, etc. The on-site use environment is complex, and there are many sources of interference, such as electromagnetic interference, u

Method used

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  • Jam-proof intelligent valve positioner

Examples

Experimental program
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Embodiment Construction

[0036] Such as figure 1 As shown, an anti-interference intelligent valve positioner, including:

[0037] Electrical converter, the air end of the electrical converter is used to connect with the valve actuator;

[0038] A circuit control assembly connected to the circuit terminals of the electrical converter;

[0039] A displacement detection feedback unit connected with the circuit control assembly;

[0040] The electrical converter includes a pneumatic amplifier 3, a nozzle 6 arranged at the back pressure port of the pneumatic amplifier 3, a baffle 4 that covers the nozzle 6, and an electromagnetic drive mechanism that drives and controls the degree of closure between the baffle 4 and the nozzle 6. The electromagnetic drive mechanism It is controlled by the current control signal sent by the circuit control component.

[0041] Such as figure 1 , 2 , 3, the air inlet of the pneumatic amplifier 3 is provided with a micro decompression constant value device, the micro deco...

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PUM

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Abstract

The invention discloses a jam-proof intelligent valve positioner which comprises an electric pneumatic converter, a circuit control component and a displacement detection feedback unit, wherein the electric pneumatic converter comprises a pneumatic amplifier, a nozzle arranged at the backpressure opening of the pneumatic amplifier, a baffle covering the nozzle and an electromagnetic drive mechanism for driving the baffle to control the cover degree of the baffle and the nozzle; the electromagnetic drive mechanism is controlled by a current control signal emitted from the circuit control component; a micro pressure reduction valuator is arranged at the air inlet of the pneumatic amplifier; the micro pressure reduction valuator comprises a constant throttling screw, a pressure relief spring sleeving the constant throttling screw and a sealing ring; the constant throttling screw is matched with a constant throttling orifice formed in the pneumatic amplifier. The jam-proof intelligent valve positioner provided by the invention has the characteristics of resisting air source wave disturbance and vibrating disturbance and preventing electromagnetic interference, is stable and reliable in property and beneficial to marketing promotion, and can effectively ensure the reliability and positioning stability in complex disturbance conditions.

Description

technical field [0001] The invention relates to the field of pneumatic valve adjustment devices, in particular to an anti-interference intelligent valve positioner. Background technique [0002] The positioner is an important control accessory of the control valve. The intelligent valve positioner mainly includes two parts: a signal processing unit and a valve position feedback unit (hereinafter referred to as the valve position feedback unit). The signal processing unit receives the external positioning signal (such as 4~20mA current signal, HART digital signal, etc.), and calculates and outputs the driving electric signal according to the sampling signal of the valve current position provided by the valve position feedback unit, and converts it into the corresponding signal through the I / P conversion unit. The pneumatic signal drives the regulating valve to move, and the position change of the regulating valve is sensed by the valve position feedback unit. The system colle...

Claims

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Application Information

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IPC IPC(8): F16K31/02F16K31/06F16K37/00F16K31/53
CPCF16K31/02F16K31/06F16K31/53F16K37/0025
Inventor 朱亚志孔璐彭艳辉吴科扬
Owner 博流控制技术(浙江)有限公司
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