WO2023094169A1 - Soupape comprenant un élément d'étanchéité souple - Google Patents

Soupape comprenant un élément d'étanchéité souple Download PDF

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Publication number
WO2023094169A1
WO2023094169A1 PCT/EP2022/081404 EP2022081404W WO2023094169A1 WO 2023094169 A1 WO2023094169 A1 WO 2023094169A1 EP 2022081404 W EP2022081404 W EP 2022081404W WO 2023094169 A1 WO2023094169 A1 WO 2023094169A1
Authority
WO
WIPO (PCT)
Prior art keywords
cross
section
sealing element
sealing
valve
Prior art date
Application number
PCT/EP2022/081404
Other languages
German (de)
English (en)
Inventor
Rolf Brockmann
Matthias Benedikt Schnitzler
Christian Schneider
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2023094169A1 publication Critical patent/WO2023094169A1/fr

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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • 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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/141—Check valves with flexible valve members the closure elements not being fixed to the valve body

Definitions

  • the invention relates to a valve for conducting a gaseous medium with a sealing element for controlling a connected unit.
  • Such a valve is used, for example, to control the passage of a gaseous medium, in particular compressed air, into or out of an oil pressure tank.
  • the oil in the oil tank is used to fill and drain a converter, turbo clutch or retarder. It is important that the filling and emptying can take place very quickly. This means that the valve must have a relatively large flow cross section for the air.
  • the basic structure of such a valve is known.
  • the sealing element of the valve can be moved steplessly from a basic position, depending on the flow direction of the air flow, into a filling position or an emptying position.
  • the passage cross-sections are determined by the air volume flow that is present.
  • the included sealing element is plate-shaped and includes an elastic sealing lip, which is loaded differently in the three functional positions. It has been found that the new requirements for such a valve cannot be met with the known design.
  • the object of the invention is to propose a valve which is designed in such a way that it satisfies the higher requirements.
  • a valve for conducting a gaseous medium with a sealing element, a housing and a channel via which a connected unit can be connected the sealing element being plate-shaped and having a annular, flexible sealing lip which can be moved into a plurality of functional positions, namely into a basic position, a filling position and an emptying position.
  • the sealing lip of the sealing element In the basic position, the sealing lip of the sealing element is in contact with a first sealing surface, so that an inlet cross section is closed, the sealing element being movable into a filling position in which an outlet cross section between a second sealing surface and the sealing element is closed and the inlet cross section between the first sealing surface and sealing lip as well as a functional cross-section between housing and sealing lip is released.
  • the cross-sectional areas of the inflow cross section and the functional cross section have a ratio of between 1:0.9 and 1:1.2 to one another.
  • the cross-sectional areas of the inflow cross section and the functional cross section have a ratio of 1:1 to one another.
  • the optimization of the forces in particular the forces that arise from the air volume flow flowing through, means that the sealing element is less stressed or deflected, which has an advantageous effect on the service life of the sealing element.
  • cross-sectional areas of the inflow cross-section and functional cross-section are designed for the dimensions of the swollen sealing lip.
  • the sealing element can consist of HNBR or another elastomer, for example.
  • the duct can be arranged in such a way that an air volume flow hits the duct opening centrally when the sealing lip is in the open position.
  • a spring can also be provided, by means of which the sealing element can be moved in the direction of the emptying position.
  • the spring force of the spring can be designed in such a way that the sealing element is not in contact with the second sealing surface in the basic position. In this way, an outlet cross-section is always released so that no residual pressure remains in the connected unit.
  • the spring force is so low that the outlet cross section and the inlet cross section are closed in the basic position by the spring force of the sealing element and the spring force of the spring only supports the movement of the sealing element into an outlet position.
  • FIGS. 1 -3 show the valve 1 in its three main functional positions.
  • Figure 1 shows the valve with the sealing element 7 in the basic position.
  • the sealing element 7 is a plate-shaped element that includes a base area and a sealing lip 10 .
  • the bottom area of the sealing element 7 rests on the carrier surface 17 of the piston 6 or is vulcanized onto it and the sealing lip 10 is designed so flexibly that it can be moved or bent into the three functional positions.
  • Figure 1 shows a possible basic position of the sealing element 7 when there is no pressure difference between the channel (connected oil pressure tank) and the outlet chamber 14 or the pressure difference is approximately equalized.
  • the spring action of the sealing element 7 brings about the corresponding movement into this basic position. Regardless of the design, it is ensured in the basic position that the sealing lip 10 always rests against the first sealing surface 8, so that the passage from the inlet chamber 12 into the chamber 13 is closed.
  • the spring force of the spring 5 can be designed differently. In one embodiment it is provided that in the basic position a small outlet cross section 19 remains open, so that in the basic position the complete venting of the oil pressure tank via the duct 3 is ensured.
  • the spring 5 is omitted or the spring force of the spring 5 is selected to be so low that the sealing element 7 rests on both sealing surfaces 8 and 9 in the basic position and closes the cross sections 15 and 19 . The spring 5 is then only provided to support the movement of the sealing element 7 into the emptying position.
  • FIG. 2 shows the valve with the sealing element 7 in the filling position, in which the passage 19 between the outlet chamber 14 and the chamber 13 is closed.
  • the sealing element 7 or the sealing lip 10 goes into a filling position as soon as the control pressure in the chamber 12 is high enough to move the sealing lip 10 into an open position, in which an opening cross section 15 is released. Or to put it another way, a control pressure is exceeded. After opening, a volume flow of air flows through two annular gaps, the inflow cross section 15 and the functional cross section 16.
  • the inflow cross section 15 is formed between the first sealing surface 8 and the sealing lip 10 and the functional cross section 16 is formed between the sealing lip 10 and the housing wall.
  • the deflection of the sealing lip is significantly influenced by the inflow cross section 15 and the functional cross section 16 .
  • the sealing lip 10 and the housing 2 are designed in such a way that the inflow cross section 15 and the functional cross section 16 have the same cross-sectional areas or through-flow areas for a fixed deflection of the sealing lip 10, so that the through-flow speeds of the air are essentially identical.
  • the design could be such that the throughflow areas of the inflow cross section 15 and the functional cross section 16 have a ratio of between 1:0.9 and 1:1.2 to one another.
  • the duct 3 can be arranged in such a way that an air volume flow hits the duct opening 11 centrally when the sealing lip is in the open position.
  • the sealing lip 10 of the sealing element 7 is deflected to such an extent that the direction of the air flow is aligned in such a way that it is directed in the direction of the duct opening.
  • the air flow hits the channel opening 11 in the middle.
  • the material from which the sealing element is made preferably HNBR or another elastomer, also plays a role in the design.
  • Sealing elements made of elastic materials, such as a rubber compound can swell when they come into contact with oily air, oil or other foreign chemical substances. This leads to a change in dimensions and properties of the sealing element.
  • the inflow cross section 15 and the functional cross section 16 can also be designed for the swollen sealing element 7, or in particular the sealing lip 10.
  • Figure 3 shows the valve in the emptying position in which the valve is switched when the pressure conditions change such that starting from the chamber 13, a higher pressure force acts on the valve 7 than from the inlet chamber 12. It is the Outlet cross-section 18 is released, so that the connected oil pressure tank is vented via channel 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

L'invention concerne une soupape (1) pour transporter un milieu gazeux, comprenant un élément d'étanchéité (7), un boîtier (2), et un canal (3) via lequel une unité reliée peut être reliée, l'élément d'étanchéité étant en forme de disque et comprenant une lèvre d'étanchéité annulaire souple (10) qui peut être déplacée dans une pluralité de positions fonctionnelles, en particulier une position de repos, une position de remplissage et une position de vidange. La lèvre d'étanchéité de l'élément d'étanchéité est, dans la position de repos, en contact avec une première surface d'étanchéité de telle sorte qu'une section transversale d'entrée est fermée, l'élément d'étanchéité étant mobile dans une position de remplissage, dans laquelle une section transversale de sortie entre une seconde surface d'étanchéité et l'élément d'étanchéité est fermée et la section transversale d'entrée entre la première surface d'étanchéité et la lèvre d'étanchéité et une section transversale fonctionnelle entre le boîtier et la lèvre d'étanchéité sont ouvertes. Selon l'invention, les surfaces en section transversale de la section transversale d'afflux et de la section transversale fonctionnelle ont un rapport compris entre 1:0,9 et 1:1,2 l'une par rapport à l'autre.
PCT/EP2022/081404 2021-11-23 2022-11-10 Soupape comprenant un élément d'étanchéité souple WO2023094169A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021130614.0 2021-11-23
DE102021130614.0A DE102021130614A1 (de) 2021-11-23 2021-11-23 Ventil mit flexiblem Dichtelement

Publications (1)

Publication Number Publication Date
WO2023094169A1 true WO2023094169A1 (fr) 2023-06-01

Family

ID=84370644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/081404 WO2023094169A1 (fr) 2021-11-23 2022-11-10 Soupape comprenant un élément d'étanchéité souple

Country Status (2)

Country Link
DE (1) DE102021130614A1 (fr)
WO (1) WO2023094169A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457330A (en) * 1983-02-11 1984-07-03 Yardney Corporation Reversible quick exhaust valve
DE3911866A1 (de) * 1989-02-24 1990-08-30 Lochmann Ira Wilfriede Einstellbares schnellentlueftungsventil
WO2019158198A1 (fr) * 2018-02-14 2019-08-22 Oetiker Schweiz Ag Vanne d'inversion de trajet d'écoulement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700219A1 (de) 1987-01-07 1988-07-21 Teves Gmbh Alfred Elektromagnetisch betaetigbares 3/2-wegeventil
US20130105721A1 (en) 2011-11-01 2013-05-02 GM Global Technology Operations LLC Drive System For An Electro-Mechanical Three-Way Dual Seat Valve
DE102012112605A1 (de) 2012-12-19 2014-06-26 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Pneumatisches Sitzventil, vorzugsweise Umschaltventil zur Bremssteuerung für Schienenfahrzeuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457330A (en) * 1983-02-11 1984-07-03 Yardney Corporation Reversible quick exhaust valve
DE3911866A1 (de) * 1989-02-24 1990-08-30 Lochmann Ira Wilfriede Einstellbares schnellentlueftungsventil
WO2019158198A1 (fr) * 2018-02-14 2019-08-22 Oetiker Schweiz Ag Vanne d'inversion de trajet d'écoulement

Also Published As

Publication number Publication date
DE102021130614A1 (de) 2023-05-25

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