WO2016091974A1 - Soupape munie d'un joint d'étanchéité à complémentarité de forme - Google Patents

Soupape munie d'un joint d'étanchéité à complémentarité de forme Download PDF

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Publication number
WO2016091974A1
WO2016091974A1 PCT/EP2015/079164 EP2015079164W WO2016091974A1 WO 2016091974 A1 WO2016091974 A1 WO 2016091974A1 EP 2015079164 W EP2015079164 W EP 2015079164W WO 2016091974 A1 WO2016091974 A1 WO 2016091974A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
sealing means
sealant
opening
dichtmittelaufnahmenut
Prior art date
Application number
PCT/EP2015/079164
Other languages
German (de)
English (en)
Inventor
Michael Hartl
Corneliu Popescu
Rainer Stromayr
Melanie BOCK
Original Assignee
Knorr-Bremse Systeme für Schienenfahrzeuge 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 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH filed Critical Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
Publication of WO2016091974A1 publication Critical patent/WO2016091974A1/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
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members

Definitions

  • the invention relates to a valve for regulating a fluid flow, comprising a housing for connecting a fluid inlet channel with a fluid outlet channel, which has a valve piston bore for guiding a valve piston, a cylindrical valve piston axially movably arranged therein with a valve plate arranged at a front end, by a pressure medium can be pressed against a valve seat arranged between the fluid inlet channel and the fluid outlet channel, and has an annular sealing means receiving groove with opening pointing towards the valve seat, and a ring-shaped sealing means arranged in a form-fitting manner in the sealing agent receiving groove and projecting axially beyond the opening thereof; for sealing the fluid inlet channel against the fluid outlet channel upon contact of the sealant on the valve seat.
  • the field of application of the invention extends to compressed air systems, for example compressed air systems of rail vehicles, in particular screw compressors in which check valves are used in a range between a compressor and an air dryer, where they work with air under high pressure, high temperature and / or high humidity if necessary ,
  • Such valves typically have a housing with a valve seat immovably therein and a valve disk provided therewith and movable with a sealant attached thereto.
  • Air supply systems in rail vehicle construction include a compressor and an air dryer.
  • In the compression of air falls in particular at re-cooling of the compressed air moisture. This moisture is deposited as a liquid phase in pre-separators and as a vapor phase in the air dryer and ejected from the compressed air supply system.
  • compressors and moisture-separating equipment such as pre-separators or air dryers, control elements must be used as required. Examples for this are:
  • valves have generally used rubber seals which are applied to a carrier material or to grooves in a carrier material. glued or glued or vulcanized or vulcanized.
  • valve flutter Another common problem with such valves is valve flutter. Before opening the valve piston pressure builds up. This presses the valve against the spring. Subsequently, the pressure in front of the valve disk decreases again slightly, so that the spring briefly closes the valve disk again. The process is repeated at short intervals and leads to valve flutter which may be accompanied by noise and increased component wear.
  • the invention includes the technical teaching that the width of the opening of the Dichtffenrynut is smaller than the maximum width of the disposed therein part of the sealant.
  • the maximum width of the sealant is the largest radial width of the sealant. Radial refers in each case to a radius of the rotation axis of the valve piston.
  • the sealant is fastened neither by, for example, adhesives nor by vulcanization on the valve disk, but only by the positive connection with the inner and the outer edge.
  • valves or control devices in Application come in which the sealing elements are no longer glued or vulcanized with their Stützgropern.
  • the compound of the seal with the support body is positively.
  • the positive connection is carried out so that the seal is mounted mountable and disassembled.
  • the quality of bonds or vulcanization must be taken into account in this structural design because of the form-fitting.
  • the control valve with the seal described is located for example between the compressor and air dryer and thus operates in a humid environment. It consists of a housing, a piston and a valve seat and a spring, wherein the piston includes a seal and the valve is designed so that the piston is pressed by backflowing air on the valve seat.
  • the seal is positively connected to the support structure of the piston.
  • the seal can be produced both by machining as well as by a shaping manufacturing process such as injection molding or vulcanization.
  • a heating rod at the level of the valve seat is preferably introduced in the plane of the seal in the housing of the valve.
  • the sealing means is formed in cross-section as a projecting with a tip over the opening of the Dichtstoffeffortut projecting triangle.
  • the angle between the two adjacent to the flanks of the Dichtstoffeffortnut legs of the sealant is between 10 ° and 70 °. This ensures at the same time a mechanically stable attachment by means of positive locking, and a small bearing surface of the sealant on the valve seat, which results in a higher pressure and thus a higher sealing effect.
  • the projection of the tip over the opening is between 5% to 30% of the axial height of the sealant.
  • the tip of the triangle which projects beyond the opening, rounded off.
  • the sealant itself is less sensitive to mechanical deformation, such as cracks or fractures.
  • a preferred embodiment of the invention provides that the sealing means in cross-section L- or T-shaped. This results in an embodiment of the sealant, which within the Dichtstofftechniknut one or two
  • Socket has, wherein the base may be formed either pointing in the direction of the cylinder piston axis, or may be formed pointing away, or may be formed pointing in both directions, and wherein the part of the sealant, which projects beyond the opening, is narrower than the base.
  • the sealing means is at least partially made of an elastomer, for example of a material such as Viton.
  • a material such as Viton.
  • the inner edge of the Dichtffeningnut is designed as an edge of a releasably mounted valve disc, which is part of the valve disc formed.
  • At least one valve disk disc is pressed with flank in the piston.
  • the flank angle on the piston can also be generated by inserting the seal by rolling. It is also possible that the seal is pressed into a prefabricated groove with flanks. Again, not mentioned fastening methods can come into question, such as riveting, gluing or welding.
  • valve disc is fastened by a releasable attachment means, such as a countersunk screw in a thread which is concentrically formed in the valve piston.
  • a releasable attachment means such as a countersunk screw in a thread which is concentrically formed in the valve piston.
  • the valve disk is concave-shaped, for generating a cavity acting as a dynamic pressure space in the thus produced concave curvature.
  • FIG. 1 shows a perspective view of a valve according to the invention
  • Figure 2 shows a cross section through a valve according to the invention
  • FIG. 3 shows a cross section through a valve according to the invention in one
  • Figure 4 shows a vertical cross section through a screw compressor with a valve according to the invention
  • Figure 5 is a horizontal cross section through this screw compressor.
  • a valve 1 comprises a housing 2, in which a fluid inlet channel 3 is connected to a fluid outlet channel 5.
  • a valve piston 7 is used with an axis 4, and perpendicular thereto in a Schuelementaidvoriques 8 an electrothermal heating element 9 for heating a sealant 10, not shown, on a valve plate 11 of the valve piston
  • a pressure means 21 in the form of a compression spring presses the valve disk 11 against a valve seat 12, whereby the connection between the fluid inlet channel 3 and the fluid outlet channel 5 is interrupted.
  • the air inlet duct 3 leads up to the valve seat 12, which is sealed in the illustrated state by the valve disk 11 with the sealant 10 inserted therein.
  • the valve plate 11 is disposed in an axial end of the valve piston 7, and consists of a integrally formed with the valve piston 7 support structure 13 and a releasably secured thereto by a releasable fastening means 14 in the form of a countersunk screw valve disk 15.
  • the area between the support structure 13 and the valve disc 15 forms a Dichtstoffabilitynut 16 with an outer edge 17 and an inner edge 18.
  • this Dichtstoffabilitynut 16 is a cross-sectionally substantially L-shaped sealant 10 is inserted.
  • the L-shape is created by the fact that a rounded tip 19 of the sealing means 10 extends axially beyond the opening 20 of the Dichtffeningnut 16 while a pedestal 23 is oriented perpendicular thereto in the direction of the axis 4 of the valve piston 7.
  • the rounded tip 19 of the sealant 10 protrudes beyond the opening 20 of the sealant receiving groove 16 and rests on the valve seat 12.
  • the width of the sealing means 10 is thereby wider than its opening 20 by the L-shaped graduation within the sealant receiving groove 16 and by the continuous taper corresponding to a triangular shape towards the front end of the valve piston within the sealant receiving groove 16 the sealant 10 firmly fixed without the use of adhesives or without vulcanization by positive locking.
  • valve disk 11 is pressed by a pressure medium 21 in the form of a compression spring on the valve seat 12 whereby a return flow from the fluid outlet channel 5 arranged behind it into the fluid inlet channel 3 is prevented.
  • the operation of the valve 1 consists in the fact that when an air pressure is applied by the Fluideintritts- channel 3, which is multiplied by the surface of the valve plate 11 is greater than the force of the pressure medium 21, the valve plate 11 lifts from the valve seat 12, whereby Air from the fluid inlet channel 3 to the fluid outlet channel 5 can flow.
  • Valve flutter is prevented by the valve disk 11 or the valve disc 15 is concave, so that it has a recess through which a cavity 22 is generated, which can act as a back pressure chamber.
  • FIG. 3 shows a cross section through a valve according to the invention, which is inserted into a screw compressor, not shown here.
  • the construction of the valve is also slightly modified, so a sleeve is arranged between the valve piston 7 and the piston bore 6.
  • the pressure means 21 is not supported, as in the previous embodiment, against the valve disk 11 but against the end face of a coaxial bore of the valve piston 7.
  • valve 1 is arranged in an upper part of a screw compressor. By moving the valve piston 7 counter to the force direction of the pressure medium 21, air can be passed through the fluid inlet channel 3 and to the fluid outlet channel 5, which is only partially visible here.
  • FIG. 5 shows a top view of the same screw compressor, with a cross section in the region of the valve 1.
  • air from the fluid inlet channel 3 can be opened by pressurizing the valve 1 and subsequently passed on to the fluid outlet channel 5 ,
  • the invention is not limited to the embodiment described above, but it is also possible modifications thereof, which are included within the scope of the following claims.
  • the pedestal is not oriented towards the axis of the valve piston but points away from it, or that the pedestal extends in both directions.
  • the sealing means has a cross-section, for example, an oval or circular shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Details Of Valves (AREA)
  • Sliding Valves (AREA)

Abstract

L'invention concerne une soupape (1) servant à réguler l'écoulement d'un fluide, comprenant un carter (2) permettant le raccordement d'un conduit d'entrée (3) du fluide à un conduit de sortie (5) du fluide et présentant un alésage (6) de piston de soupape servant au guidage d'un piston de soupape (7), un piston de soupape (7) agencé de manière mobile axialement dans l'alésage et muni d'un disque de soupape (11) agencé à une extrémité avant (24) qui peut être comprimé par un moyen de pression (21) contre un siège de soupape (12) agencé entre le conduit d'entrée (3) du fluide et le conduit de sortie (5) du fluide et qui présente une rainure de logement (16) de moyen d'étanchéité annulaire délimitée par un flanc intérieur (18) et un flanc extérieur (17) et munie d'une ouverture (20) orientée vers le siège de soupape (12), ainsi qu'un moyen d'étanchéité annulaire (10) agencé par complémentarité de forme dans la rainure de logement (16) de moyen d'étanchéité et dépassant axialement au-delà de l'ouverture (20), et servant à rendre le conduit d'entrée (3) du fluide étanche par rapport au conduit de sortie (5) du fluide lorsque le moyen d'étanchéité (10) est en appui contre le siège de soupape (12). La largeur de l'ouverture (20) de la rainure de logement (16) du moyen d'étanchéité est plus petite que la largeur maximale de la partie du moyen d'étanchéité (10) agencée à l'intérieur.
PCT/EP2015/079164 2014-12-10 2015-12-09 Soupape munie d'un joint d'étanchéité à complémentarité de forme WO2016091974A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014118267.7 2014-12-10
DE102014118267.7A DE102014118267A1 (de) 2014-12-10 2014-12-10 Ventil mit formschlüssiger Dichtung

Publications (1)

Publication Number Publication Date
WO2016091974A1 true WO2016091974A1 (fr) 2016-06-16

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ID=54843836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/079164 WO2016091974A1 (fr) 2014-12-10 2015-12-09 Soupape munie d'un joint d'étanchéité à complémentarité de forme

Country Status (2)

Country Link
DE (1) DE102014118267A1 (fr)
WO (1) WO2016091974A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018026472A1 (fr) * 2016-08-02 2018-02-08 Parker-Hannifin Corporation Valve à action directe à haut débit
CN112384722A (zh) * 2018-07-10 2021-02-19 卡尔德拉工程有限公司 用于插塞头组件的系统和方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3516279T3 (pl) 2016-09-21 2022-03-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Zawór minimalnego ciśnienia dla sprężarki śrubowej dla pojazdu, zwłaszcza pojazdu użytkowego

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH344274A (fr) * 1957-08-07 1960-01-31 Kugler Fonderie Robinetterie Dispositif obturateur à soupape
US2936154A (en) * 1957-09-09 1960-05-10 Platen Baltzar Carl Von Water-cook with valve seating and valve body
GB1493762A (en) * 1976-01-07 1977-11-30 Cons Valve Ind Inc Valve
US20100140530A1 (en) * 2008-12-09 2010-06-10 Caldera Engineering, Llc Dissimilar material retention
DE102009032953A1 (de) * 2009-07-14 2011-01-20 Wabco Gmbh Lufttrockner

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627299A (en) * 1926-01-06 1927-05-03 Loose Seat Valve Company Lifting valve
DE1098311B (de) * 1956-11-12 1961-01-26 Baltzar Carl Von Platen Dipl I Wasserhahn
FR1593318A (fr) * 1968-11-19 1970-05-25
JP3349132B2 (ja) * 1999-04-12 2002-11-20 三菱電線工業株式会社 低荷重シール
DE20321257U1 (de) * 2003-12-20 2006-07-27 Gustav Wahler Gmbh U. Co. Kg Heizeinrichtung, insbesondere für ein thermostatisches Arbeitselement eines Thermostatventils
WO2015031730A1 (fr) * 2013-08-30 2015-03-05 Swagelok Company Vanne à soufflet à adaptateur de cylindre de corps de vanne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH344274A (fr) * 1957-08-07 1960-01-31 Kugler Fonderie Robinetterie Dispositif obturateur à soupape
US2936154A (en) * 1957-09-09 1960-05-10 Platen Baltzar Carl Von Water-cook with valve seating and valve body
GB1493762A (en) * 1976-01-07 1977-11-30 Cons Valve Ind Inc Valve
US20100140530A1 (en) * 2008-12-09 2010-06-10 Caldera Engineering, Llc Dissimilar material retention
DE102009032953A1 (de) * 2009-07-14 2011-01-20 Wabco Gmbh Lufttrockner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018026472A1 (fr) * 2016-08-02 2018-02-08 Parker-Hannifin Corporation Valve à action directe à haut débit
US10870320B2 (en) 2016-08-02 2020-12-22 Parker-Hannifin Corporation High flow direct acting valve
CN112384722A (zh) * 2018-07-10 2021-02-19 卡尔德拉工程有限公司 用于插塞头组件的系统和方法
CN112384722B (zh) * 2018-07-10 2023-02-17 卡尔德拉工程有限公司 用于插塞头组件的系统和方法

Also Published As

Publication number Publication date
DE102014118267A1 (de) 2016-06-16

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