WO2023099614A1 - Soupape de commande - Google Patents

Soupape de commande Download PDF

Info

Publication number
WO2023099614A1
WO2023099614A1 PCT/EP2022/083942 EP2022083942W WO2023099614A1 WO 2023099614 A1 WO2023099614 A1 WO 2023099614A1 EP 2022083942 W EP2022083942 W EP 2022083942W WO 2023099614 A1 WO2023099614 A1 WO 2023099614A1
Authority
WO
WIPO (PCT)
Prior art keywords
control valve
channels
throttle element
valve
designed
Prior art date
Application number
PCT/EP2022/083942
Other languages
German (de)
English (en)
Inventor
Sebastian Krause
Andreas Sander
Original Assignee
Samson Aktiengesellschaft
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 Aktiengesellschaft filed Critical Samson Aktiengesellschaft
Publication of WO2023099614A1 publication Critical patent/WO2023099614A1/fr

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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths

Definitions

  • the invention relates to a control valve of the type specified in the preamble of patent claim 1.
  • process fluid flows in process fluid lines are supplied to process engineering processes via control valves.
  • the process fluid streams are to be set according to the process and operation according to certain control variables, including with regard to the flow rate. It is also well known to provide so-called throttle elements for pressure reduction in process engineering systems.
  • Throttle elements of this type are sufficiently known from the prior art and generally include a throttle body having a plurality of flow channels and through which a process fluid can flow.
  • a generic throttle element is for example in
  • Tesla valves are also well known. Tesla valves are mainly used in microfluidics to set a predetermined direction of flow and to block the flow in the opposite direction.
  • the Tesla valve is disclosed in US Pat. No. 1,329,559.
  • nonreturn valves are often used, which have a mechanically movable component, for example a nonreturn flap, for closing a flow direction.
  • the process fluid exerts a large force on the moving component.
  • the moving part is prone to wear damage.
  • the invention is based on the object of further developing a control valve according to the type specified in the preamble of claim 1 in such a way that a backflow of the process fluid is inhibited while avoiding the disadvantage mentioned.
  • the object is achieved by the characterizing features of claim 1 in conjunction with the preamble features.
  • the channels are designed in such a way that a fluidic inhibition of a backflow of the process fluid through the channels is realized.
  • the channels preferably each have a main channel and a secondary channel. As a result, the flow through the main channel and the flow through the secondary channel can be influenced differently by the corresponding channel courses.
  • the secondary channel has a smaller diameter than the main channel.
  • the channels are preferably designed as Tesla valves. Due to the design of the channels as Tesla valves, the flow resistance against the process flow direction is strong.
  • the Tesla valve preferably has a main channel and a number of secondary channels depending on the desired backflow inhibition, ie the flow counter to the process flow direction. The more side channels are provided, the greater the inhibition of the backflow.
  • the throttle element is preferably designed as a solid cylinder with a cylinder height, with the channels penetrating the solid cylinder axially to a cylinder axis.
  • the length of the channels is greater than the height of the cylinder.
  • the throttle element is preferably arranged in the valve inlet or in the valve outlet.
  • the arrangement in the valve inlet or valve outlet can prevent a backflow from the valve or into the valve.
  • the throttle element is designed as a hollow cylinder with a wall thickness, with the channels penetrating the hollow cylinder radially to a cylinder axis.
  • the length of the channels is preferably greater than the wall thickness of the throttle element. A longer channel can increase backflow resistance for a process fluid.
  • the throttle element is preferably formed from a number of partial elements, with a partial element comprising a number of channels. As a result, the size and the throttling effect of the throttling element can be adjusted depending on the application.
  • the partial elements are designed as disks. This enables simple and targeted maintenance. Damaged discs can be easily replaced.
  • the channels are preferably introduced into the partial elements by removing the material. This enables the partial elements to be manufactured simply and inexpensively.
  • the control valve can be designed as a cage valve and the throttle element can be designed as a valve cage encompassing the valve member.
  • the throughput of the valve can also be set using a cage valve.
  • the throttle element is designed in one piece.
  • the throttle element with the multiple channels is preferably produced in layers by an additive method. With this additive process, complex channel structures can be manufactured precisely, quickly and without loss of material.
  • a further aspect of the invention relates to a fluidic system comprising a line and a control valve connected thereto according to claim 1, wherein a process fluid is guided through the line and the control valve and the channels are formed on the process fluid with regard to the return flow inhibition.
  • FIG. 1 shows a side sectional view of a cage valve with a multi-part throttle element according to a first embodiment of the invention
  • FIG. 2 shows a sectional view from above of a cage valve with a throttle element according to a second embodiment of the invention, the channels being designed as Tesla valves;
  • FIG. 3 shows a detailed view according to FIG. 2 of the Tesla valves
  • FIG. 4 shows a side sectional view of a control valve with a throttle element arranged in the inlet according to a third embodiment of the invention
  • FIG. 5 shows a side sectional view of a control valve with a schematic course of the channels in the throttle element
  • FIG. 6 shows a sectional view from above of a control valve with a schematic course of the channels in the throttle element.
  • 1 to 4 each show a control valve 10 which has a throttle element 12 .
  • the control valve 10 comprises an inlet 14 with an inlet chamber 16, an outlet 18 with an outlet chamber 20, a valve housing 22 and a drive rod 24 which is connected to a valve member 28.
  • FIG. 1 shows a side sectional view of a control valve 10 with a throttle element 12 according to a first embodiment of the invention.
  • the control valve 10 is designed in such a way that the inlet 14 with the inlet chamber 16 is arranged on the left-hand side and the outlet 18 with the outlet chamber 20 on the right-hand side.
  • the throttle element 12 is rotationally symmetrical to a cylinder axis 32 as a hollow cylinder.
  • the valve member 28 is piston-shaped and is mounted in the throttle element 12 so that it can be displaced in the axial direction along the cylinder axis 32 via the drive rod 24 .
  • the throttle element 12 is fluidically connected to the inlet space 16 via a valve seat 33 .
  • the valve member 28 is shown in the open position in FIG. 1, i.e. above the throttle element 12.
  • the throttle element 12 comprises a plurality of sub-elements 35 at least in regions in the axial direction along the cylinder axis 32.
  • the sub-elements 35 are designed in the shape of disks.
  • the partial elements 35 are arranged one above the other in the axial direction along the cylinder axis 32 .
  • Each sub-element 35 has a plurality of throttle inlet openings 34, to which the sub-element 35 penetrating channels 36 connect.
  • the channels 36 open into throttle outlet openings 37.
  • the arrangement of the partial elements 35 one above the other means that a large number of throttle inlet openings 34 with the assigned channels 36 are assigned to the inlet space 16 and the throttle outlet openings are assigned to the outlet space 20.
  • the process fluid thus flows through the throttle element 12 from the inlet chamber 16, through the throttle inlet openings 34, the channels 36 and the throttle outlet opening 37 into the outlet chamber 20.
  • the throttle element 12 is formed in one piece.
  • the throttle element 12 formed by the partial elements 35 is of hollow-cylindrical design.
  • the cylinder inner wall forms a guide area 38 for the valve member 28, which can be moved between the open position, as shown in FIG. 1, and a closed position.
  • the closed position is reached by the valve member 28 after is moved down and covers all throttle inlet openings 34 and closes them fluidically.
  • the inlet 14 is fluidically connected to the outlet 18 via the channels 36 .
  • Fig. 1 an open position of the control valve 10 is shown.
  • the valve member 28 is arranged in the axial direction along the cylinder axis 32 in the guide area 38 .
  • all the throttle inlet openings 34 are fluidly connected to the channels 36 and the throttle outlet openings 37 to the inlet 14 and the outlet 18 .
  • the valve member 28 is partially arranged in the area of the throttle inlet openings 34 .
  • a part of the throttle inlet openings 34 is closed by the valve member 28 .
  • the passage cross section formed by the individual cross sections of the throttle inlet openings 34 is reduced in comparison to the open position.
  • the closed position is characterized by a valve member 28 that is fully introduced into the throttle element 12 .
  • the valve member 28 terminates with the valve seat 33 at a lower free end. This arrangement of the valve member 28 closes all the throttle inlet openings 34 .
  • the fluidic connection of the inlet space 16 to the throttle element 12 is closed by the interaction of the valve member 28 with the valve seat 33 .
  • the process fluid in the control valve 10 is conducted through the inlet 14 into the inlet space 16 in a predetermined process flow direction.
  • the process fluid then enters the interior of throttle element 12 in an open position or partially open position.
  • the process fluid is conducted via throttle inlet openings 34 and channels 36 through throttle element 12 via throttle outlet openings 37 into outlet chamber 20 and can then flow through the Outlet 18 are derived.
  • the process flow direction can also be from the outlet 18 to the inlet 14 .
  • the process flow direction is determined by the formation of the channels 36 or is determined by the design of the channels 36.
  • the channels 36 are designed in such a way that a backflow counter to the predetermined process flow direction is inhibited, with the process fluid not being inhibited in the process flow direction.
  • the partial elements 35 with the introduced channels 36 are produced in particular by removing material.
  • FIG. 2 shows a sectional view from above of a further embodiment of a throttle element 12 introduced into a control valve 10 .
  • the inlet 14 is arranged on the left side and the outlet 18 on the right side of the control valve 10 .
  • the throttle element 12 is placed in the center of the control valve 10 .
  • the channels 36 penetrating the throttle element 12 each have the shape of a Tesla valve.
  • the channels 36 designed as Tesla valves can also run in the axial direction to the cylinder axis 32 and in the circumferential direction to the cylinder axis 32 in the throttle element 12 in order to increase the channel length.
  • the control valve 10 is designed as a cage valve and the throttle element 12 as a cage throttle.
  • the cage valve with the cage throttle is manufactured using an additive manufacturing process.
  • FIG. 3 shows a detailed view of FIG.
  • the Tesla valve includes a main channel 40 and several secondary channels 42.
  • the main channel 40 has an almost straight course.
  • the secondary channel 42 is characterized by a loop shape.
  • the direction of process flow here is from the interior of the throttle body 30 via the channels 36 to the outlet 18 .
  • the Tesla valves are designed in such a way that the process fluid follows the main channel 40 in the process flow direction.
  • the flow resistance is minimal due to the shape of the main channel 40.
  • the process fluid is preferably conducted through the secondary channels 42 counter to the process flow direction. Due to the shape of the secondary channels 42, a smaller channel diameter of the secondary channels 42 compared to the main channel 40 and the longer flow path associated with the shape, the flow resistance is considerably greater than in the process flow direction. Due to the crossings of the secondary channels 42 with the main channel 40, vortices arise at the crossings, which additionally inhibit a backflow. Due to the different characteristics of the flow resistance depending on the process flow direction, a preferred and an inhibited process flow direction is formed.
  • FIG. 4 shows a further embodiment of a control valve 10 with a throttle element 12 in a closed position.
  • the throttle element 12 is arranged in the inlet space 16 of the inlet 14 .
  • the throttle element 12 is in this case designed as a tubular throttle.
  • the control valve 10 acts in the axial direction along the cylinder axis 32 , the process fluid being regulated by the positioning of the valve member 28 in the axial direction along the cylinder axis 32 .
  • the throttle element 12 is arranged in the outlet space 20 of the control valve 10 .
  • 5 and 6 each show schematically the course of the channels 36 in the throttle element 12 of a control valve 10 according to a further embodiment.
  • the courses of the channels 36 each have a portion in the y-direction and in the z-direction.
  • the courses of the channels 36 each have a portion in the x-direction and in the y-direction.
  • the length of the channels 36 relative to the wall thickness of the throttle element 12 is increased.
  • a greater length of the channels 36 is given by the inventive design of the channels 36 a greater backflow inhibition.
  • a further embodiment is a fluidic system comprising a valve 10, a throttle element 12 and a process fluid flowing through the fluidic system.
  • the channels 36 of the throttle element 12 are designed in such a way that a backflow against the process flow direction is inhibited.
  • the control valve 10 with the throttle element 12 has an inhibition of the process fluid counter to the process flow direction due to the formation of the channels 36 as Tesla valves, without significantly influencing the flow in the process flow direction and without considering moving parts for the inhibition.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne une soupape de commande (10) permettant la régulation d'un fluide de traitement, la soupape comprenant une enveloppe (22) de soupape dotée d'une entrée de soupape et d'une sortie de soupape (14, 18), un élément (28) de soupape disposé entre l'entrée de soupape et la sortie de soupape (14, 18), et un élément d'étranglement (12) introduit dans l'enveloppe (22) de soupape. L'élément d'étranglement (12) comprend de multiples canaux (36) s'étendant d'un côté d'entrée à un côté de sortie. L'invention est caractérisée en ce que les canaux (36) sont conçus de sorte qu'un retour du fluide de traitement est bloqué de manière fluidique par les canaux (36).
PCT/EP2022/083942 2021-12-01 2022-11-30 Soupape de commande WO2023099614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202021106564.8U DE202021106564U1 (de) 2021-12-01 2021-12-01 Stellventil
DE202021106564.8 2021-12-01

Publications (1)

Publication Number Publication Date
WO2023099614A1 true WO2023099614A1 (fr) 2023-06-08

Family

ID=80474197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/083942 WO2023099614A1 (fr) 2021-12-01 2022-11-30 Soupape de commande

Country Status (2)

Country Link
DE (1) DE202021106564U1 (fr)
WO (1) WO2023099614A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329559A (en) 1916-02-21 1920-02-03 Tesla Nikola Valvular conduit
US20070028977A1 (en) * 2003-05-30 2007-02-08 Goulet Douglas P Control valve with vortex chambers
DE102015005611A1 (de) 2015-04-30 2016-11-03 Samson Aktiengesellschaft Drosselkörper mit mehreren raumspiralförmig verlaufenden Kanälen
DE102016102756A1 (de) 2016-02-17 2017-08-17 Vag-Armaturen Gmbh Regelzylinder für eine Regelarmatur und Regelarmatur mit einem derartigen Regelzylinder
CN112361069A (zh) * 2020-10-09 2021-02-12 杨开村 一种消除水管起停水锤效应的装置
CN112032364B (zh) * 2020-08-21 2021-06-08 浙江大学 一种可维持出口压力稳定的调节阀及其出口压力控制方法
CN213711987U (zh) * 2020-07-16 2021-07-16 宁波方太厨具有限公司 防火阀及采用该防火阀的楼宇集中式排烟系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329559A (en) 1916-02-21 1920-02-03 Tesla Nikola Valvular conduit
US20070028977A1 (en) * 2003-05-30 2007-02-08 Goulet Douglas P Control valve with vortex chambers
DE102015005611A1 (de) 2015-04-30 2016-11-03 Samson Aktiengesellschaft Drosselkörper mit mehreren raumspiralförmig verlaufenden Kanälen
DE102016102756A1 (de) 2016-02-17 2017-08-17 Vag-Armaturen Gmbh Regelzylinder für eine Regelarmatur und Regelarmatur mit einem derartigen Regelzylinder
CN213711987U (zh) * 2020-07-16 2021-07-16 宁波方太厨具有限公司 防火阀及采用该防火阀的楼宇集中式排烟系统
CN112032364B (zh) * 2020-08-21 2021-06-08 浙江大学 一种可维持出口压力稳定的调节阀及其出口压力控制方法
CN112361069A (zh) * 2020-10-09 2021-02-12 杨开村 一种消除水管起停水锤效应的装置

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