Anti-blocking intelligent valve positioner and intelligent valve

An intelligent valve, anti-clogging technology, applied in valve details, valve devices, chemical instruments and methods, etc., can solve problems such as abnormal operation, low power consumption and accuracy of intelligent electrical valve positioners, and small aperture, and achieve the effect of avoiding clogging.

CN104832693AActive Publication Date: 2015-08-12博流控制技术(浙江)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-08-12

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Abstract

The invention discloses an anti-blocking intelligent valve positioner and an intelligent valve. The anti-blocking intelligent valve positioner comprises an air source purifying unit which is used for being connected with an air source; an anti-blocking electrical conversion unit which is connected with the air source purifying unit and used for controlling a valve actuator; a circuit control unit which is connected with the anti-blocking electrical conversion unit and used for transmitting a control signal to the anti-blocking electrical conversion unit; and a position feedback unit which is connected with the circuit control unit and used for detecting the actuation position of the valve actuator. The intelligent valve comprises the anti-blocking intelligent valve positioner and the valve actuator which is matched with the anti-blocking intelligent valve positioner. Intelligent valve positioning is realized, and internal blocking caused by pollution of the air source can be effectively avoided so that the anti-blocking intelligent valve positioner and the intelligent valve are particularly suitable for industrial field environment process control.
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Description

technical field

[0001] The invention relates to the field of valve positioners, in particular to an anti-clogging intelligent valve positioner and an intelligent valve. Background technique

[0002] The valve positioner is the main accessory of the control valve. It uses the valve stem displacement signal as the input feedback measurement signal and the controller output signal as the setting signal for comparison. When there is a deviation between the two, it changes its output to the actuator. The signal makes the actuator act, and establishes a one-to-one correspondence between the displacement of the valve stem and the output signal of the controller. Therefore, the valve positioner forms a feedback control system with the valve stem displacement as the measurement signal and the controller output as the setting signal. The manipulated variable of the control system is the output signal of the valve positioner to the actuator.

[0003] Valve positioners that work with ...

Examples

Embodiment Construction

[0042] like figure 1 As shown, it is an intelligent valve of the present invention, including an anti-clogging intelligent valve positioner (positioner for short, namely figure 1 part inside the frame) and the valve actuator that cooperates with the anti-clogging intelligent valve positioner. Anti-clogging intelligent valve positioner, including: an air source purification unit 1 used to connect with the air source, the air source is first input into the air source purification unit 1; connected with the air source purification unit 1 to control the anti-clogging electrical valve actuator Conversion unit 2; connected with the anti-clogging electrical conversion unit 2, a circuit control unit 4 for sending control signals to the anti-clogging electrical conversion unit 2; connected with the circuit control unit 4, used to detect the position feedback of the execution position of the valve actuator Unit 5 ; an impurity cleaning unit 3 connected to the air source purification un...