Operating Method for a Valve System, Control Unit and Computer Program Product

Patent metadata

Field	Value
Publication number	US-2023119500-A1
Application number	US-202217964983-A
Country	US
Kind code	A1
Filing date	Oct 13, 2022
Priority date	Oct 14, 2021
Publication date	Apr 20, 2023
Grant date	—

Abstract

A valve system having a valve with a moveable armature and a pneumatic actuation apparatus, a controller, a computer program product for simulating operating behavior of the valve system and an operating method for the valve system, wherein the valve is provided in an active operating state and a valve position to be approached is specified, a target differential pressure corresponding to the valve position to be approached that is to be set in the pneumatic actuation apparatus is determined, a differential pressure in the pneumatic actuation apparatus is changed and the differential pressure present is detected, and the differential pressure present is stabilized if a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

First claim

What is claimed is:

1 . An operating method for a valve system having a valve with a moveable armature and a pneumatic actuation apparatus, the method comprising:
a) providing the valve in an active operating state and specifying a valve position to be approached; b) determining a target differential pressure corresponding to the valve position to be approached which is to be set in the pneumatic actuation apparatus; c) changing a differential pressure present in the pneumatic actuation apparatus and detecting the differential pressure present; and d) stabilizing the differential pressure present when a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

2 . The operating method as claimed in claim 1 , wherein steps b) to d) are performed without mechanical, electromechanical, magnetic, capacitive or optical detection of a present valve position.

3 . The operating method as claimed in claim 1 , wherein the valve position to be approached lies between two end positions of the armature.

4 . The operating method as claimed in claim 2 , wherein the valve position to be approached lies between two end positions of the armature.

5 . The operating method as claimed in claim 1 , wherein the differential pressure is formed based on at least one of a first and second chamber pressure; and wherein the at least one of the first and second chamber pressure is detected at a first or second pressure line of the valve.

6 . The operating method as claimed in claim 5 , wherein at least one of the first and second chamber pressure is determined via a pressure sensor with a measuring accuracy of up to +/−10 mbar.

7 . The operating method as claimed in claim 1 , wherein the settable threshold value corresponds to up to 0.1% to 3.0% of a stroke length of the pneumatic actuation apparatus.

8 . The operating method as claimed in claim 1 , wherein a corresponding target differential pressure is determined during step (b) while taking into account hysteresis.

9 . The operating method as claimed in claim 1 , wherein at least steps b) and c) are performed repeatedly in order to travel through a specifiable traversing profile of the armature.

10 . The operating method as claimed in claim 1 , wherein at least one of steps a) to d) is performed while taking into account an assembly orientation of the valve system.

11 . The operating method as claimed in claim 1 , wherein the operating method comprises self-calibration of the valve system in which the end positions are approached to determine a pressure-time characteristic.

12 . A valve system comprising:
a valve; and a pneumatic actuation apparatus in which setting a differential pressure causes an armature of the valve to be movable; wherein a specifiable valve position is settable in a radial direction via the differential pressure as a sole input variable to save installation space of the valve system.

13 . The valve system as claimed in claim 12 , wherein a first and/or second chamber pressure are each settable via a pressure line.

14 . The valve system as claimed in claim 12 , further comprising:
a controller unit; wherein the controller is configured to: a) provide the valve in an active operating state and specify a valve position to be approached; b) determine a target differential pressure corresponding to the valve position to be approached which is to be set in the pneumatic actuation apparatus; c) change a differential pressure present in the pneumatic actuation apparatus and detect the differential pressure present; and d) stabilize the differential pressure present when a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

14 . The valve system as claimed in claim 13 , further comprising:
a controller unit; wherein the controller is configured to: a) provide the valve in an active operating state and specify a valve position to be approached; b) determine a target differential pressure corresponding to the valve position to be approached which is to be set in the pneumatic actuation apparatus; c) change a differential pressure present in the pneumatic actuation apparatus and detect the differential pressure present; and d) stabilize the differential pressure present when a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

15 . A controller for actuating an armature on a pneumatic actuation apparatus for a valve system, the controller being configured to receive measurement signals for a first and a second chamber pressure and to output control signals for setting at least one of the first and second chamber pressures, and wherein the controller is further configured to:
a) provide a valve in an active operating state and specify a valve position to be approached; b) determine a target differential pressure corresponding to the valve position to be approached which is to be set in the pneumatic actuation apparatus; c) change a differential pressure present in the pneumatic actuation apparatus and detect the differential pressure present; and d) stabilize the differential pressure present when a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

16 . A computer program product for simulating the operating behavior of a valve system which is connectable to a fluid line, the valve system including a valve and a pneumatic actuation apparatus in which setting a differential pressure causes an armature of the valve to be movable, and a specifiable valve position is settable in a radial direction via the differential pressure as a sole input variable to save installation space of the valve system, the computer program product including program code which, when executed by a controller, causes operation of the valve system, the program code comprising:
a) program code for providing the valve in an active operating state and specifying a valve position to be approached; b) program code for determining a target differential pressure corresponding to the valve position to be approached which is to be set in the pneumatic actuation apparatus; c) program code for changing a differential pressure present in the pneumatic actuation apparatus and detecting the differential pressure present; and d) program code for stabilizing the differential pressure present when a deviation between the differential pressure present and the target differential pressure falls below a settable threshold value in terms of amount.

Assignees

• Siemens Ag

Inventors

• Volz Marco
• Stegmanns Robert Markus

Classifications

• G05B15/02 Primary

  electric · CPC title

• G05D16/2013

  using throttling means as controlling means · CPC title

• G05D16/028 Primary

  Controlling a pressure difference (control of flow G05D7/00) · CPC title