DE1550231A1 - Ball valve seal - Google Patents

Ball valve seal

Info

Publication number
DE1550231A1
DE1550231A1 DE19661550231 DE1550231A DE1550231A1 DE 1550231 A1 DE1550231 A1 DE 1550231A1 DE 19661550231 DE19661550231 DE 19661550231 DE 1550231 A DE1550231 A DE 1550231A DE 1550231 A1 DE1550231 A1 DE 1550231A1
Authority
DE
Germany
Prior art keywords
housing
ball
seal
sealing
ball valve
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
DE19661550231
Other languages
German (de)
Inventor
Bruno Friebel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE1550231A1 publication Critical patent/DE1550231A1/en
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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0668—Single packings
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/205—Sealing effected by the flowing medium
    • F16K5/207—Sealing effected by the flowing medium using bellows
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/205—Sealing effected by the flowing medium
    • F16K5/208—Sealing effected by the flowing medium with tongue-shaped means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Description

2##elhahndichtung (Zusatz zu Patent-... 0 Aktenzeidhen: F 48 927 XII/47g) Das Hauptpatent bezieht sich auf die Abdichtungsorgane für einen Hahn mit kugelförmigen Küken, welches durch zwei Zapfen in einem einteiligen Gehäuse gelagert ist, Die Abdichtung zwischen dem Gehäuse und dem Küken erfolgt durch-Dichtungselemente, welche in Durchflußrichtung im Gehäuse angeordnät sind.2 ## elhahndichtung (addendum to patent -... 0 filings: F 48 927 XII / 47g) The main patent relates to the sealing elements for a cock with spherical plug, which is supported by two pins in a one-piece housing, the seal between the housing and the plug takes place through sealing elements, which are arranged in the flow direction in the housing.

Gemäß F 48 927 XII / 479 werden teure Bauteile und sonstige be. schriebene Nachteile daclurch vermieden, daß in Durchflußrichtung elastische Dichtungeringe in der Gehäusebohrung angebracht sind, die sämtliche Funktionen, wie Dichtung auf der Kugeloberfläche, radiale Dichtung im Gehäuse und-axiales Federungsvermögen zwischen formachlüssiger Gehäusebefestigung des Dichtungselementes und der Kugel zur Vorspannung der Dichtungelippe auf der Kugel in einem Stück durch ihren Werkstoff und ihre konstruktive Ausführung in sich vereinigen, Pür die Steigerung der radialen Formänderung sind Wege beschrieben worden, mit denen die Abdichtung erzielt und der Dichtungsring formschlüssig im Gehäuse gehalten wird, An Hand einiger Beispiele wurden Möglichkeiten für die Erfüllung der drei funktionellen Forderungen, also der Dichtung auf der Kugeloberfläche, der radialen Dichtung zum Gehäuse und der Vorspannung zwischen der Gehäuse- und Kugeldichtungslippe der Dichtung aus einem Stück durch den Werkstoff und konstruktive Gestaltung. Wenn jedoch durch den Einsatz des Kugelhahnes bei höheren Temperaturen oder aggressiven Medien besondere Wege in Bezug auf den Dichtungswerkstoff beschritten werden müssen, wie sehr harte temperaturbeständige Kunststoffe, welche mit Additives gefüllt sindp oder beispielsweise aus Glas- oder Borfasern und dergleichen gewickelte Dichtungen, die kunstharzgebunden sind und zur Erreichung besserer Gleiteigenschaften mit Graphit- oder Molybdändisulfidpulver gemischt werdeng dann muß der konstruktiven Ausführung zur Erreichung-von Federungseigenschaften besondere Beachtung geschenkt werden, weil die alä Beispiel genannten Werkstoffe keine genügende Elastizität besitzen.According to F 48 927 XII / 479, expensive components and other be. Written disadvantages daclurch avoided that elastic sealing rings are attached in the flow direction in the housing bore, which perform all functions, such as sealing on the ball surface, radial sealing in the housing and axial resilience between the positive housing fastening of the sealing element and the ball to preload the sealing lip on the ball unite a piece through their material and their structural design, Pür the increase in the radial change in shape, ways have been described with which the seal is achieved and the sealing ring is held positively in the housing, using a few examples, possibilities for fulfilling the three functional Requirements, i.e. the seal on the spherical surface, the radial seal to the housing and the preload between the housing and ball sealing lip of the seal from one piece due to the material and structural design. However, if the use of the ball valve at higher temperatures or aggressive media means that special paths have to be taken with regard to the sealing material, such as very hard, temperature-resistant plastics that are filled with additives or, for example, seals made of glass or boron fibers and the like, which are synthetic resin-bonded and mixed with graphite or molybdenum disulphide powder to achieve better sliding properties, then special attention must be paid to the design in order to achieve suspension properties, because the materials mentioned in the example do not have sufficient elasticity.

Diese fehlende Materialeigenschaft, welche aber für die Erfüllung der oben beschriebenen Funktionen der Kugelhahndichtung erforderlich sind, werden erfindungsgemäß dadurch ausgeglichen, daß durch eine balgartige Gestaltung des zylindrischen Dichtungsteiles ein axiales Federungsvermögen erzielt wird, welches durch die dargestellte Ausfüh:rung infolge der Druckdifferenzen noch erhöht wird, während die radiale Federung für die formschlüssige Verbindung der Dichtung zum Gehäuse In der betreffenden Dichtungspartie durch entsprechende am Umfang gleichmäßig verteilte axial verlaufende Schlitze erreicht wird. Die dichtende Wirkung zum Gehäuse wird durch einen Bund am zylindrischen Teil der Dichtung übernommen und damit gleichzeitig infolge des erreichten Spieles zwischen dem balgartigen Dichtungsteil und der Aufnahmebohrung im Kugelhahngehäuse ein Ausglejch bei lage. veränderungen zwischen der Dichtungsachse und der Kugelmitte durchfabrikatorisch benötigte Toleranzen erzielt, An.Hand der Skizze wird die Erfindung erläutert, wobei die Ziffern den Bezeichnungen des Hauptpatentes entsprecheng In deia einteiligen Gehäuse 1 befindet sich die formachlüssig gehal. tene Dichtung 10, während die Position 3 das Kugelküken darstellt" Nach erfolgter Montage des KugelkÜkens 3 werden die Dichtungen 10 durch die seitlichen Anschlußöffnungen des Gehäuses geschoben und springen mit dem geschlitzten Teil a in die vorgesehene Gehäuseaussparung ein, wodurch eine formschlüssige Halterung erreicht wird. Der zylindrische Bund b der Dichtung 10 hat gegenüber der Bohrung des Gehäuses ein Übermaß und übernimmt,dadurch die Dichtungsfunktion zum Gehäuse 1, Dahinter hat die Dichtung 10 gegenüber der Gehäusebohrung das Spiel a und kann sich dadurch den fabrikatorisch bedingten Kugelverlagerungen anpassen, Durch die dargestellten beiden Innenrillen rl und beispielsweise einer Außenrille r2 entstehen die beiden Schenkel c, welche infolge des geringeren Außendruckes P2 gegenüber dem Innendruck Pl der Dichtung 10 eine zusätzliche druckabhängige axiale Spannung in der Dichtung 10 erzeugen und damit die Flächenpressung an der Kugeloberfläche d vergrößern und Somit auch incbr Lage sind, auftretenden Dichtungsverschleiß zu kompensieren.This lack of material properties, which are necessary for the fulfillment of the functions of the ball valve seal described above, are compensated according to the invention in that an axial resilience is achieved through a bellows-like design of the cylindrical sealing part, which is increased by the illustrated embodiment as a result of the pressure differences , while the radial suspension for the positive connection of the seal to the housing is achieved in the relevant sealing section by means of corresponding axially extending slots evenly distributed on the circumference. The sealing effect on the housing is taken over by a collar on the cylindrical part of the seal and thus at the same time due to the play achieved between the bellows-like sealing part and the receiving hole in the ball valve housing, a compensation position. changes between the seal axis and the center of the ball durchfabrikatorisch required tolerances achieved An.Hand the drawing the invention is explained, where the digits entsprecheng the designations of the main patent Deia one-piece housing 1, the formachlüssig is supported. Tene seal 10, while the position 3 represents the ball plug "After the assembly of the ball plug 3 , the seals 10 are pushed through the side connection openings of the housing and jump with the slotted part a into the housing recess provided, whereby a form-fitting holder is achieved The cylindrical collar b of the seal 10 is oversized compared to the bore of the housing and takes on the sealing function for the housing 1, behind it the seal 10 has the clearance a against the housing bore and can thus adapt to the ball displacements caused by the manufacturing process, through the two inner grooves shown rl and, for example, an outer groove r2 arise c the two legs of which 10 generate due to the lower external pressure P2 against the internal pressure Pl of the seal, an additional pressure-dependent axial tension in the seal 10 and thus increasing the surface pressure on the ball surface d, and thus also INCB r are able to compensate for seal wear.

Claims (2)

Patent'ansp;püche 1.,Kugelhahn, bei welchem das Kugelküken durch zwei.-Zapfen in einem einteiligen Gehäuse gelager-t ist- und die Abdichtung-- zw.Lsthen dem Gehäuse und dem Kugelküken durch Diehtungselemente erf-ölgt-"bei, denen nach der Pa-tentanmeldung# F 48 927- XII - / 47'9--- s.äiatlizhe Funktionen", wie Dichtung auf der Kugeloberfläche,.. radikalem- Dichtung im Gehäuse und axiales Federungsvermögen zwischen, der-- f.brms-chlU"'B#-sigen Gehäusebefestigung der-Dichtungselemente und der Kügel',in einem-Stück durch ihren Werkstoff und ihre konstruktiye--AüsfÜhr-un2g"-,-,in sich vereinigen, d a d u r o h g e i e n n z e i- o h. n e- t da-ß die ih#. der,-Durchflußbohrung des Gehäuses 1 angeordneten einteiligen E#i-chitungselemente 10, welche mit ihrer Gleitlippe am Kugelküken 3 unter Vorspannung anliegen, in ihrem konischen Teil a axIale Schlitze zur Erreichung der radialen Federungfür die formschlüs, sige Verbindung mit dem Gehäuse 1 haben. Patent claims 1. Ball valve in which the ball plug is supported by two pins in a one-piece housing and the seal between the housing and the ball plug is carried out by means of locking elements. those according to the patent application # F 48 927- XII - / 47'9 --- s.äiatlizhe functions ", such as sealing on the spherical surface, .. radical sealing in the housing and axial resilience between, the-- f.brms -chlU "'B# -sigen housing attachment of the sealing members and the Kügel', in one-piece by its material and its konstruktiye - AüsfÜhr-un2g" -, -, unite in themselves, d a d ur o h g eiennze i- o h. n e-t that ih #. The one-piece E # i-chitungselemente 10 arranged in the, through-flow bore of the housing 1 , which rest with their sliding lip on the ball plug 3 under pretension, in their conical part a axial slots to achieve the radial suspension for the positive connection with the housing 1 . 2. Kugelhahn nach Anspruch 1, d a d u r c h g e k e n n z e i o h -n e t , daß ein kurzer zylindrischer Bund b der-Dichtung 10 durch Übermaß die Vorspannung für die Dichtung in der Gehäusebohrung erzeugt und die folge-de Dichtungspartie-zur Kugel hin durch das-Gehäusespiel s Kugelverlagerungen folgen kann, 3. Kugelhahn nach Anspruch 1 und 29 d a d u r c h g e k e n n z e i c h-n e t 9 daß die durch Innenrillen ri und Außenrillen r2 gebildeten Schenkel c die axiale Federung erzeugen, welche durch Druckdifferenzen zwischen dem Innendruck P, und dem Außendruck P2 noch vergrößert wird.2. Ball valve according to claim 1, d a d ur c h g e k ennzei o h -NET that a short cylindrical collar b of the seal 10 by the excess bias voltage for the seal in the housing bore and generates the follow-de Dichtungspartie- to the ball through the housing game s ball displacements can follow, 3. ball valve according to claim 1 and 29 d a d urch g e k e nnzei c hn et 9 that the legs formed by inner grooves ri and outer grooves r2 produce the axial suspension, which is increased by pressure differences between the internal pressure P and the external pressure P2.
DE19661550231 1966-04-13 1966-12-09 Ball valve seal Pending DE1550231A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF0048927 1966-04-13
DEF0050886 1966-12-09

Publications (1)

Publication Number Publication Date
DE1550231A1 true DE1550231A1 (en) 1969-09-18

Family

ID=34679783

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19661550226 Pending DE1550226A1 (en) 1966-04-13 1966-04-13 Ball valve seal
DE19661550231 Pending DE1550231A1 (en) 1966-04-13 1966-12-09 Ball valve seal

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19661550226 Pending DE1550226A1 (en) 1966-04-13 1966-04-13 Ball valve seal

Country Status (1)

Country Link
DE (2) DE1550226A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003292A1 (en) * 1982-03-16 1983-09-29 Josef Nemetz Stop or control valve
EP0146568A1 (en) * 1983-05-31 1985-07-03 Richards & Co B C A valve seal suitable for cryogenic service.
ITMI20120262A1 (en) * 2012-02-22 2013-08-23 Riv Rubinetterie Italiane Velatta S Pa IMPROVED DEVICE FOR THE INTERCEPTION OF FLUIDS
EP2516901A4 (en) * 2009-12-21 2017-01-04 Metso Flow Control Oy Valve and sealing ring

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53122937A (en) * 1977-04-01 1978-10-26 Yamatake Honeywell Co Ltd Sealed type rotary valve
DE2719854C3 (en) * 1977-05-04 1984-09-13 Knorr-Bremse GmbH, 8000 München The elastic sealing ring that seals the gap between the ball plug and the valve body and is arranged in a recess of a ball valve body which is delimited by a cylindrical and a radially directed flat wall
JPS6378767U (en) * 1986-09-12 1988-05-25
DE102015007598A1 (en) * 2015-06-16 2016-12-22 Hydac Accessories Gmbh Switching device, in particular in the form of a ball valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003292A1 (en) * 1982-03-16 1983-09-29 Josef Nemetz Stop or control valve
EP0146568A1 (en) * 1983-05-31 1985-07-03 Richards & Co B C A valve seal suitable for cryogenic service.
EP0146568A4 (en) * 1983-05-31 1986-09-15 Richards & Co B C A valve seal suitable for cryogenic service.
EP2516901A4 (en) * 2009-12-21 2017-01-04 Metso Flow Control Oy Valve and sealing ring
ITMI20120262A1 (en) * 2012-02-22 2013-08-23 Riv Rubinetterie Italiane Velatta S Pa IMPROVED DEVICE FOR THE INTERCEPTION OF FLUIDS

Also Published As

Publication number Publication date
DE1550226A1 (en) 1969-07-31

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