Actuating drive device process valves

• US 10,488,872 B2
• Filed: 07/01/2018
• Issued: 11/26/2019
• Est. Priority Date: 07/07/2017
• Status: Active Grant

• Current Assignee: Samson AG
• Original Assignee: Samson AG
• Inventors: Koinke, Janusz
• Primary Examiner(s): Tietjen, Marina A
• Assistant Examiner(s): Soski, Frederick D
• Application Number:
  US16/024,884
• Publication Number:
  US 20190011938A1
• Time in Patent Office: 513 Days
• CPC Class Codes: F16K 31/1221 one side of the piston being spring-loaded
• CPC Class Codes: F16K 31/126 the fluid acting on a diaphragm, bellows, or the like F16K31/145, F16K31/165, F16K31/365, F16K31/385 take precedence
• CPC Class Codes: F16K 31/1262 one side of the diaphragm being spring loaded
• CPC Class Codes: F16K 31/165 the fluid acting on a diaphragm
• CPC Class Codes: F16K 31/365 the fluid acting on a diaphragm
• CPC Class Codes: F16K 31/385 the fluid acting on a diaphragm
• CPC Class Codes: F16K 37/00 Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• CPC Class Codes: F16K 37/0033 using a permanent magnet, e.g. in combination with a reed relays
• CPC Class Codes: F16K 37/0041 for measuring valve parameters F16K37/0033 takes precedence
• CPC Class Codes: F16K 37/0083 by measuring valve parameters
• CPC Class Codes: G05D 16/063 the sensing element being a membrane
• CPC Class Codes: G05D 16/0636 characterised by the loading device of the membrane, e.g. spring
• CPC Class Codes: G05D 16/0655 using one spring-loaded membrane
• CPC Class Codes: G05D 16/0663 using a spring-loaded membrane with a spring-loaded slideable obturator
• CPC Class Codes: G05D 16/0683 using a spring-loaded membrane
• CPC Class Codes: G05D 16/0691 characterised by the loading mechanisms of the membrane
• CPC Class Codes: G05D 16/10 the sensing element being a piston or plunger
• CPC Class Codes: G05D 16/107 with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation
• CPC Class Codes: Y10T 137/7905 Plural biasing means
• CPC Class Codes: Y10T 137/7923 With means to protect spring from fluid
• CPC Class Codes: Y10T 137/7932 : Valve stem extends through fixed spring abutment

Abstract

Actuating device for process valves (2) comprising a housing (22), comprising two housing parts (24, 26) and an actuating membrane member (20) sealingly mounted between housing parts (24, 26) and moveable in strokes which, on the one hand, forms together with the housing a pressurizeable working chamber (28) and, on the other hand, is loaded by at least one return spring (32) such that, in the unpressurized state, the actuating membrane member (20) is brought into a predefined position by means of the pre-tension of the return spring (32), wherein the actuating membrane member (20) is adapted to be connected to a valve shaft (18) connected to the valve body (16) of the process valve (2). A coupling installation (64) is provided having coupling parts (66, 68) arranged on both sides in the direction of the lifting movement of the actuating membrane member (20), which coupling parts are adapted to a connection (70) an the valve shaft (18) such that the connection of the valve shaft (18) with the actuating membrane member (20) is carried out by a one-sided mounting, wherein the valve shaft (18) is adapted to be connected to each of the coupling parts (66, 68) of the coupling installation (64). On the actuating device (2) a distance measuring system (48) is arranged, which comprises a connection (72) which is adapted to be connected to each of the coupling parts (66, 68) of the coupling installation (64) by means of a one-sided mounting, wherein the coupling parts (66, 68) are constructed in analogy to the corresponding connections (70, 72) for selectively fastening of the valve shaft (18) or the distance measuring system (48) to the coupling installation (64).

Claims

1. Actuating device for a process valve, comprising:

a housing;

said housing includes a first housing part and a second housing part;

said housing further includes an actuating membrane member sealingly mounted between said first and said second housing parts;

said actuating membrane member forms together with said housing a pressurizeable working chamber;

said actuating membrane member in an unpressurized state is brought into a predefined position by pre-tension of said at least one return spring;

said actuating membrane member is connected to a valve shaft;

said valve shaft is connected to a valve body of said process valve;

a coupling including a first coupling part and a second coupling part, said first and second coupling parts are interconnected with said actuating membrane member;

said first and second coupling parts are connected to said valve shaft and a moved part;

a distance measuring system comprising;

a sensor housing, a sensor, a core and a tension spring;

said tension spring operating between said core of said sensor and said moved part; and

, said sensor selected from the group consisting of a Hall sensor, an inductive sensor and a capacitive sensor.

2. Actuating device according to claim 1, further comprising:

said actuating membrane member as well as a membrane plate are fixed between said first and second coupling parts.

3. Actuating device according to claim 1, wherein said core is pre-tensioned opposite to said tension spring.

4. Actuating device according to claim 1, wherein said core is longitudinally shiftably supported in said sensor housing.