EP4136371A1 - Appareil de réglage pour une installation technologique - Google Patents

Appareil de réglage pour une installation technologique

Info

Publication number
EP4136371A1
EP4136371A1 EP21721409.7A EP21721409A EP4136371A1 EP 4136371 A1 EP4136371 A1 EP 4136371A1 EP 21721409 A EP21721409 A EP 21721409A EP 4136371 A1 EP4136371 A1 EP 4136371A1
Authority
EP
European Patent Office
Prior art keywords
rod
valve
coupling
drive
actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21721409.7A
Other languages
German (de)
English (en)
Inventor
Manuel Hielscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samson AG
Original Assignee
Samson AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samson AG filed Critical Samson AG
Publication of EP4136371A1 publication Critical patent/EP4136371A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/48—Attaching valve members to screw-spindles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/50—Preventing rotation of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

Definitions

  • the invention relates to an actuating device for a process engineering plant according to the type specified in claim 1 and a system of an actuating device according to claim 17.
  • process fluid flows in lines are fed to process engineering processes via actuating devices.
  • the process fluid flows are to be set according to the process and operation according to certain control variables, including with regard to the flow rate.
  • process fluid streams can be fed continuously or discontinuously to a process engineering process in the engineering plant.
  • the actuating devices are used to control and regulate these process fluid flows.
  • Such actuators have been known for a long time and have an actuator and a control valve.
  • the actuator is provided with an actuator housing and a drive rod mounted in the actuator housing.
  • the actuator housing is connected to the control valve, namely a valve housing of the control valve, via a connection housing, for example a yoke.
  • a valve seat is provided in the valve housing and a valve member, usually a valve cone, which interacts with the valve seat, is mounted.
  • the valve cone is connected to a valve rod, which in turn is coupled to the drive rod of the actuator and is moved over it.
  • the valve cone can serve as a blocking and / or throttling element for the process fluid. For example, by raising or lowering the valve cone, the opening cross-section within the valve seat can be set in a predetermined manner or the control valve can be closed.
  • the valve housing is provided with an inlet opening through which the process fluid enters the control valve, and an outlet opening through which the process fluid exits the control valve again.
  • the valve seat of the control valve is arranged between the inlet opening and the outlet opening.
  • the inlet opening and the outlet opening are each provided with a flange in order to connect the control valve to a pipeline and to integrate it into the process engineering system.
  • the valve rod and the drive rod are connected to one another via a rod coupling.
  • the rod coupling can be provided with an anti-twist device which prevents the drive rod or the valve rod with the valve member from rotating during operation.
  • an anti-twist device which prevents the drive rod or the valve rod with the valve member from rotating during operation.
  • valve members with special control contours which obtain their control characteristics only when the valve member is precisely aligned with the valve seat, it is necessary to align the valve member in a predetermined manner and to prevent it from twisting during operation.
  • the above-mentioned anti-rotation device is used for this purpose.
  • connection housing for example the length of the yoke, and the length of the valve rod and the drive rod in connection with the desired stroke of the actuator and the valve member must be precisely matched to one another.
  • an actuator for a process engineering system which has a pneumatically operated actuator with a drive rod.
  • the control device has an actuating valve actuated by the actuating drive with a valve rod which is arranged, in particular, in an axial extension of the drive rod.
  • a valve cone is attached to the valve stem.
  • a rod coupling connects the drive rod and the valve rod for power transmission, in particular for axial translational adjusting movements.
  • the axial distance between the mutually facing ends of the valve rod and the drive rod can be adjusted via the rod coupling in order to adjust the overall axial length of the drive rod and valve rod.
  • the rod coupling comprises two adjacent half-shells, which have two positioning devices for a non-positive coupling of the half-shells at the respective ends of the drive rod and the valve rod. At least one of the positioning devices is designed for changing the axial fastening position of the half-shell relative to the drive rod and / or valve rod.
  • the known actuating devices have the disadvantage that the setting options for the distance between the drive rod and the valve rod are limited with the aid of the rod coupling.
  • the threads provided in the rod coupling are limited in length.
  • the valve rod and the drive rod should be screwed or arranged into the rod coupling over at least 1 to 1.5 times the respective rod diameter in order to create an area for the connection that is sufficient for the loads. If the thread provided in the rod coupling is enlarged, the rod coupling must also be enlarged. Then, however, the connection housing must also be adapted so that the rod coupling does not hit the valve housing or the actuator housing in all adjusted positions. An extension of the thread of the drive rod into the actuator housing, but also an extension of the thread of the valve rod into the valve housing is not possible, since, among other things, there would then no longer be a seal.
  • the invention is based on the object of developing an actuator according to the type specified in the preamble of claim 1 in such a way that, while avoiding the disadvantages mentioned, the possibility is created of simply combining different sizes of actuators with different sizes of control valves.
  • the different distance between the valve rod and the drive rod resulting from the different sizes should be able to be easily compensated and the stroke can be easily adjusted in each case without exchanging the connection housing.
  • the invention is based on the knowledge that by using a further rod, the options for compensating for the different distances, but also the setting options, can be considerably expanded in a simple manner.
  • a second rod coupling and an adjusting rod are provided, the adjusting rod being provided in the area between the drive rod and the valve rod.
  • a rod coupling couples the adjustment rod to the drive rod
  • a rod coupling couples the adjustment rod to the valve rod.
  • different distances can be compensated for in a simple manner, namely by selecting the appropriate length of the adjusting rod.
  • the second rod coupling can connect the drive rod and the adjustment rod to one another.
  • the second rod coupling connects the drive rod to the adjusting rod in a form-fitting manner in one direction of the axis.
  • the first rod coupling comprises the anti-rotation device, which is connected to the connecting housing and allows a drive movement.
  • the first rod coupling can connect the adjusting rod and the valve rod to one another.
  • the first rod coupling to connect the valve rod to the adjusting rod in a force-fitting or form-fitting manner in one direction of the axis of the valve rod.
  • the first rod coupling preferably has a length which consists of a minimum contact surface for the valve rod in the first rod coupling necessary for the non-positive connection, the minimum contact surface for the adjusting rod in the first rod coupling and the maximum compensation range for several different control valves and / or the maximum setting range for Adjusting the stroke of the valve member of the control valve consists.
  • the valve rod preferably has an external thread at its free end, which is assigned to the first rod coupling, the first rod coupling having an internal thread assigned to the external thread of the valve rod, so that the distance between the valve rod and the adjusting rod in the first rod coupling can be fine-tuned. This results in a high degree of flexibility to compensate for the distance between the valve rod and the drive rod the adjusting rod without always having to use a different length of an adjusting rod when the combination of control valve and actuator changes.
  • the adjusting rod has an external thread at its free end, which is assigned to the first rod coupling, the first rod coupling having an internal thread assigned to the external thread of the adjusting rod. This enables a fine adjustment of the distance between the adjustment rod and the valve rod in the first rod coupling.
  • the adjusting rod At its free end, which is assigned to the second rod coupling, the adjusting rod can have an outer contour which, in cooperation with the inner contour of the second rod coupling adapted to it, results in a form fit in the axial direction of the adjusting rod.
  • the adjustment rod In order to be able to rotate the adjustment rod by means of a key tool, the adjustment rod has a key surface between the external thread and the outer contour for engagement by a key tool.
  • the first rod coupling preferably comprises two half-shells which are screwed together and which encompass the free ends of the adjusting rod and the valve rod. This enables simple assembly and connection of the first rod coupling with the adjusting rod and the valve rod.
  • the drive rod, the adjusting rod and the valve rod can be arranged concentrically to one another and to a drive axis, the half-shells lying against one another in a plane which runs through the drive axis.
  • the anti-rotation device engages in a rail on the connection housing which extends parallel to the drive rod.
  • the anti-rotation device is thereby guided along the rail during the lifting movement of the actuating device and, as an abutment, ensures protection against rotation.
  • the anti-rotation device has releasably arranged sliding shoes, which are designed in particular as sliding bolts, via which the anti-rotation device rests on the connecting housing, is supported and when a The stroke movement of the drive rod slides along the connecting housing.
  • the frictional resistance can be optimized by choosing the right sliding shoes.
  • the sliding blocks can be made of plastic.
  • the object is achieved by a system of an actuating device, as has just been explained.
  • This system has several differently designed actuators and / or control valves as well as several adjusting rods each having different lengths and enables a method for setting a stroke of a valve member of a control valve by selecting the actuator and / or the control valve and the appropriate length of the Adjustment rod a first rough adjustment / a first rough compensation of the distance to the valve rod takes place.
  • a second fine adjustment can be made in the system by turning the adjusting rod with its external thread opposite the internal thread of the first rod coupling.
  • the second fine adjustment can be made in the system by turning the valve rod with its external thread opposite the internal thread of the first rod coupling.
  • the second fine adjustment can take place by arranging the valve rod and the adjusting rod relative to one another in the first rod coupling and then clamping the rod coupling.
  • the invention thus provides for the function of coupling the rods and a first compensation of the distance to be separated into different components.
  • the adjusting rod can be provided in different lengths, so that very large axial adjustment paths between the drive rod and the valve rod are possible.
  • the axial fine adjustment is created by screwing or pushing into the first rod coupling. After the rods have been adjusted to one another, the halves of the first rod coupling are screwed together and thus clamped.
  • twisting during operation must be avoided.
  • connection housing is designed in particular as a yoke which is arranged between the valve housing, for example a cover, and the actuator.
  • Fig. 1 is a side view of the actuator according to the invention with actuator
  • Connection housing and control valve the control valve being shown in longitudinal section except for the upper area;
  • FIG. 2 shows a perspective view from the front of the ready-to-use connection housing with drive rod, adjustment rod and valve rod and with first and second rod coupling;
  • Fig. 3 is a perspective view from the front side of the connection housing without
  • FIG. 4 shows a front view of the drive housing ready for operation.
  • the actuating device 10 essentially comprises a pneumatic actuating drive 12, an actuating valve 14 and a connecting housing in the form of a yoke 16.
  • the actuator 12 comprises an actuator housing 20, which is separated in the interior by a support plate-membrane arrangement into a working chamber and a return chamber. That Actuator housing 20 is provided with a pneumatic input connection, not shown here, via which the working chamber can be subjected to an actuating pressure. The working chamber is separated from the reset chamber in a fluid-tight manner via the support plate-membrane arrangement. Return springs are arranged in the return chamber. By means of the signal pressure, the support plate-membrane arrangement is moved in one direction against the force of the return springs and, when the signal pressure drops, in the other direction by the force of the return springs.
  • the actuator 12 is a conventional actuator. The individual parts of the actuator 12 just mentioned are therefore not shown in detail.
  • a drive rod 18 is attached to the support plate-diaphragm assembly.
  • the support plate-membrane arrangement is provided with a stop which limits an axial movement of the drive rod 18 upwards.
  • the drive rod 18 extends through the reset chamber, through the lower wall of the actuator housing 20 and with its valve-side end vertically into the yoke 16.
  • the control valve 14 comprises a control valve housing 22 with a valve seat 24 arranged in the control valve housing 22.
  • the control valve housing 22 has an inlet opening 26 through which process fluid enters the control valve housing 22, and an outlet opening 28 through which process fluid exits the control valve housing 22, Mistake.
  • the inlet opening 26 and the outlet opening 28 are each surrounded by a flange 30, 32 in order to connect the control valve housing 22 in a known manner to an inlet pipe (not shown) and a discharge pipe (not shown) and thus to integrate it into a pipe system.
  • a fluid channel 34 for the process fluid extends in the control valve 14 from the inlet opening 26 via the valve seat 24 to the outlet opening 28.
  • a valve member 36 which is connected to a valve rod 38, interacts with the valve seat 24.
  • the valve rod 38 is axially aligned with the drive rod 18 vertically. At the end of the valve rod 22 facing away from the drive rod 18, the latter is connected to the valve member 36.
  • the valve seat 24 delimits a valve opening. If necessary, the valve seat 24 is closed or more or less released via the valve member 36.
  • the position of the valve member 36 relative to the valve seat 24, for example, sets a flow rate of the process fluid through the control valve 14 or, when the valve member 36 rests on the valve seat 24, the flow of the process fluid through the control valve 14 is prevented.
  • a guide sleeve 40 is provided in the control valve housing 22 as well as a packing (not shown).
  • An adjusting rod 42 is arranged between the valve rod 38 and the drive rod 18, coaxially to the valve rod 38 and to the drive rod 18.
  • the valve-side end of the adjusting rod 42 and the drive-side end of the valve rod 38 are connected to one another via a first rod coupling 44.
  • the adjusting rod 42 extends beyond the first rod coupling 44 in the direction of the drive rod 18.
  • the end of the adjusting rod 42 on the drive side and the end of the drive rod 18 on the valve side are connected to one another via a second rod coupling 46.
  • the valve rod 38 and the adjusting rod 42 have the same diameter in the area assigned to the first rod coupling 44.
  • the first rod coupling 44 comprises two half-shells 44a and 44b, each with a cylindrical inner contour 44c, which is adapted to the cylindrical outer contour of the valve rod 38 and the adjusting rod 42 in the assigned area.
  • the two half-shells 44a and 44b are connected to one another by screws 48 in such a way that the adjusting rod 42 and the valve rod 38 are non-positively arranged in the axial direction at a predetermined distance from one another.
  • the first rod coupling 44 has a length which consists of a minimum contact surface of the valve rod 38 with the inner contour 44c necessary for the frictional connection, a minimum length necessary for a threaded connection between the first rod coupling 44 and the adjusting rod 42 and the maximum compensation area for several different control valves 14 and the maximum setting range for setting the stroke of the valve member 36 of the control valve 14.
  • the yoke 16 is provided on one side with a guide rail 50 aligned parallel to the longitudinal extension of the yoke 16 and thus to the direction of movement of the actuator 12.
  • the front and rear sides of the guide rails 50 are engaged by the half-shell 44a and the half-shell 44b.
  • the half-shells 44a, 44b are provided with a guide leg 44d.
  • the guide leg 44d extends parallel to the guide rail 50 and is provided with sliding bolts 52 on the inside.
  • the sliding bolts 52 and the guide rail 50 are matched to one another with regard to the material. There is a permanent system. The coordination of the material enables sliding along during operation of the actuator 10 with the lowest possible frictional resistance.
  • the guide rail 50 is made of cast steel and the sliding bolts 52 are made of plastic.
  • the first rod coupling 44 thus serves, through its guide leg 44d with the sliding bolts 52 in cooperation with the guide rail 50, as an anti-twist device for the valve rod 38 firmly connected to the first rod coupling 44.
  • the adjusting rod 42 is provided with an external thread 42c in the area assigned to the first rod coupling 44 and the first rod coupling 44 is provided with an internal thread in the inner contour 44c in the area assigned to the adjusting rod 42.
  • the adjusting rod 42 has key surfaces 42a in the region of the adjusting rod 42 protruding from the first rod coupling 44.
  • a wrench tool can act on the wrench surfaces 42a and rotate the adjusting rod 42 relative to the first rod coupling 44 via the thread and thus change the distance from the valve rod 38.
  • the valve rod 38 can also be provided with an external thread 38a and in the area of the first rod coupling 44 associated with the valve rod 38 with an internal thread, as shown in FIG. 4.
  • the area of the adjusting rod 42 assigned to the second rod coupling 46 is provided with a stepped design which is closed on the drive rod side by a holding head 42b.
  • the end of the drive rod 18 on the valve rod side is correspondingly mirror-inverted.
  • the second rod coupling 46 has an inner contour that is adapted to this, so that a form-fit connection free of play results.
  • the second rod coupling 46 also consists of two half-shells which are connected to one another via screws 54.
  • the second rod coupling 46 runs laterally on the outside to a tip, which serves as a pointer 56.
  • a marking 58 is provided laterally on the inside of the yoke 16. Via the position of the pointer 56 relative to the marking 58, the position of the valve member 36 in relation to the valve seat 24 and thus the stroke can be read off.
  • the second rod coupling 46 can also have a mechanical stroke pick-up device which can be coupled to a position controller or a stroke signaling device in order to output a control signal proportional to the stroke value.
  • the first rod coupling 44 and the second rod coupling 46 each consist of two half-shells.
  • the drive rod 18, the adjustment rod 42 and the valve rod 38 are arranged concentrically to one another and to a drive axis 60.
  • the half-shells each lie against one another in a plane which runs through the drive axle 60.
  • a set of adjusting rods 42 of different lengths is available for setting the stroke of the actuating device 10 for an actuating valve 14 selected from a plurality of actuating valves of different sizes.
  • a suitable length of an adjusting rod 42 By selecting a suitable length of an adjusting rod 42, a first rough adjustment of the compensation of the distance between the valve rod 38 and the drive rod 18 as well as an adjustment of the desired stroke takes place.
  • Another possibility of setting results from the relative arrangement of the valve rod 38 to the first rod coupling 44 over the clamping area as the area in which a clamping / non-positive connection of the first rod coupling 44 and valve rod 38 is possible.
  • the fine adjustment can then take place by turning the adjusting rod 42 with the aid of a tool wrench and the thread 42c relative to the first rod coupling 44.
  • the invention is thus characterized by the various possibilities of setting or compensating for the different distance from a valve rod 38 to the drive rod 18 when different control valves 14 are connected for an actuator 12 with a predetermined yoke 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne un appareil de réglage (10) pour une installation technologique de processus, lequel comporte une soupape de réglage (14) et un mécanisme de réglage (12) qui présente un carter de mécanisme de réglage (20) et une tige d'entraînement (18) montée dans le carter de mécanisme de réglage (20), le carter de mécanisme de réglage (20) étant relié à un carter de soupape (22) de la soupape de réglage (14) par l'intermédiaire d'un corps de liaison, par exemple une culasse (16), la soupape de réglage (14) comprenant un siège de soupape (24) et un obturateur (36) coopérant avec le siège de soupape (24), ledit obturateur étant relié à une tige de soupape (38) qui fait saillie dans le corps de liaison (16), un premier accouplement à tiges (44) permettant de transmettre la force d'entraînement entre la tige d'entraînement (18) et la tige de soupape (38), et l'unité modulaire composée de la tige d'entraînement (18), de la tige de soupape (38) et du premier accouplement à tiges (44) est montée coulissante relativement au corps de liaison (16) par l'intermédiaire d'une sécurité antirotation. L'invention se caractérise en ce qu'il est prévu un second accouplement à tiges (46) et une tige d'ajustement (42), la tige d'ajustement (42) se situant dans la zone située entre la tige d'entraînement (18) et la tige de soupape (38), un accouplement à tiges (44, 46) accouplant la tige d'ajustement (42) avec la tige d'entraînement (18) et un accouplement à tiges (44, 46) accouplant la tige d'ajustement (42) avec la tige de soupape (18).
EP21721409.7A 2020-04-16 2021-04-16 Appareil de réglage pour une installation technologique Pending EP4136371A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020102122.2U DE202020102122U1 (de) 2020-04-16 2020-04-16 Stellgerät für eine verfahrenstechnische Anlage
PCT/EP2021/059863 WO2021209584A1 (fr) 2020-04-16 2021-04-16 Appareil de réglage pour une installation technologique

Publications (1)

Publication Number Publication Date
EP4136371A1 true EP4136371A1 (fr) 2023-02-22

Family

ID=71079628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21721409.7A Pending EP4136371A1 (fr) 2020-04-16 2021-04-16 Appareil de réglage pour une installation technologique

Country Status (5)

Country Link
US (1) US20230235834A1 (fr)
EP (1) EP4136371A1 (fr)
CN (1) CN216306897U (fr)
DE (1) DE202020102122U1 (fr)
WO (1) WO2021209584A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028112B (zh) * 2021-02-03 2023-08-25 德莱赛机械(苏州)有限公司 一种调节阀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043739B (de) * 1955-10-11 1958-11-13 Rich Klinger Ag Absperreinrichtung fuer stroemende Medien
US6364285B1 (en) * 2000-05-03 2002-04-02 Dan L. Stinnett Utility valve key
US7219691B2 (en) * 2003-02-07 2007-05-22 Fisher Controls International Llc Control valve positioner mounting system
DE102010025635B4 (de) 2010-06-30 2012-05-31 Samson Ag Stellgerät
US9599250B2 (en) * 2014-02-19 2017-03-21 Fisher Controls International Llc Actuator apparatus having integral yoke tubing
US9458947B2 (en) * 2014-02-25 2016-10-04 Fisher Controls International Lc Actuator apparatus with internal tubing and anti-rotation mechanism
DE202017105252U1 (de) 2017-08-31 2017-10-23 Samson Ag Stellgerät für verfahrenstechnische Anlagen

Also Published As

Publication number Publication date
US20230235834A1 (en) 2023-07-27
DE202020102122U1 (de) 2020-05-27
WO2021209584A1 (fr) 2021-10-21
CN216306897U (zh) 2022-04-15

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