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Actuating device for an on/off valve

A technology for regulating devices and switches, which can be used in valve devices, control/regulation systems, transportation and packaging, etc., and can solve problems such as high cost

Active Publication Date: 2010-06-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Setting up position controllers for partial stroke testing is costly in material and money
Also, while a device consisting of a valve and a pneumatic drive can be tested with the aid of a position controller and the partial stroke test implemented by it, this is not the case for solenoid valves, which require a different testing method

Method used

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  • Actuating device for an on/off valve
  • Actuating device for an on/off valve

Examples

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Embodiment Construction

[0013] The illustrated adjusting device has an on / off valve 1 which can be moved by means of a pneumatic drive 2 via an adjusting element 3 (here in the form of a lifting rod) either into an operating position, eg "open", or into Safe position, e.g. "OFF". The solenoid valve 4 utilizes the control voltage V provided by the control system 5 s To control, the solenoid valve connects the pneumatic drive 2 with the compressed air supply 6 . In an emergency, the control voltage Vs is switched off in order to vent the pneumatic drive 2 via the solenoid valve 4 . The pneumatic drive 2 is then depressurized and moves the adjusting element 3 together with the valve 1 from the operating position into the safety position, for example under the action of the spring 7 .

[0014] In order to be able to check the function of the regulating device during the partial stroke test, the control system 5 generates a control signal St at the binary output 8 at defined times, which is passed throu...

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PUM

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Abstract

An actuating device for an on / off valve (1) has a pneumatic drive (2) which is connected to a compressed air supply (6) by means of a solenoid valve (4), wherein, when driven with a control voltage (Vs), the solenoid valve (4) ventilates the pneumatic drive (2) with the compressed air and, when the control voltage (Vs) is not present, vents the pneumatic drive (2), and wherein the pneumatic drive (2) moves the valve (1) into an operating position during ventilation and moves it into a safety position during venting. In order to make it possible to carry out partial-stroke tests with the simplest possible means, the means for carrying out the partial-stroke test have a controllable switch (12) which is closed in the quiescent state, and in this case supplies the control voltage (Vs) to the solenoid valve (4), and is opened by a control signal (St) which is generated in order to carry out the partial-stroke test. In this case, the control signal (St) is supplied to the controllable switch (12) by means of a position switch (10) which is closed in the operating position of the valve (1) and is opened when the valve (1) reaches a predefined position in the direction of the safety position.

Description

technical field [0001] The invention relates to a regulating device for opening / closing valves, with a pneumatic drive connected to a compressed air supply via a solenoid valve, wherein the solenoid valve switches the pneumatic drive on and off when controlled with a control voltage Compressed air is fed in, and the pneumatic drive device is exhausted when there is no control voltage, and the pneumatic drive device moves the valve to the operating position when it is intake and to the safe position when it is exhausted, and the adjustment device also There is a device for carrying out a partial stroke test. Background technique [0002] In the regulating device known from DE 10 2006 003 750 A1 or DE 10 2005 004 477 A1, a pneumatically opened / closed valve, in particular an emergency disconnection (ESD=emergency stop) valve, is brought into operation by means of a pneumatic drive position, such as "open", or into a safe position, such as "closed". The solenoid valve is contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCF16K37/0083G05B23/0256F16K37/0075Y10T137/8242
Inventor 克劳斯-彼得·黑尔福尔克尔·希尔施
Owner SIEMENS AG
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