DE600738C - Diaphragm gas valve - Google Patents
Diaphragm gas valveInfo
- Publication number
- DE600738C DE600738C DEB155481D DEB0155481D DE600738C DE 600738 C DE600738 C DE 600738C DE B155481 D DEB155481 D DE B155481D DE B0155481 D DEB0155481 D DE B0155481D DE 600738 C DE600738 C DE 600738C
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- gas valve
- cover
- control
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/163—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using membranes within the main valve
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
- G05D23/125—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow
- G05D23/126—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow using a capillary tube
- G05D23/127—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow using a capillary tube to control a gaseous fluid circulation
- G05D23/128—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow using a capillary tube to control a gaseous fluid circulation the fluid being combustible
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Fluid Pressure (AREA)
Description
Die Erfindung bezieht sich auf ein Membranregelventil, das durch. Druckänderungen in einem Steuerraum betätigt wird, der auf der einen Seite einer Membran angeordnet ist, auf deren andere Seite der Hauptdruck wirkt. Bei bekannten Reglerventilien. dieser Art Wird die Membran mit ihrem Rande zwischen dem Ventilgehäuse und dessen Deckel eingeklemmt. Tritt eine Undichtheit zwischen, der Membran ίο und dem den Steuerraum enthaltenden Gehäuseteil, z. B. dem Deckel auf, so entweicht das in der Steuerkammer eingeschlossene Gas durch diese Undichtheit in die Atmosphäre und es entsteht auf der Steuer seite der Membran eine Druckverminderung, die ein ungewolltes Öffnen des Ventils bewirkt. The invention relates to a diaphragm control valve that by. Pressure changes is operated in a control room, which is arranged on one side of a membrane, on the other side of which the main pressure acts. With known regulator valves. this kind will the membrane clamped with its edge between the valve housing and its cover. If a leak occurs between the membrane ίο and the housing part containing the control chamber, z. B. on the lid, the gas trapped in the control chamber escapes through this leak into the Atmosphere and there is a pressure reduction on the control side of the diaphragm, which causes the valve to open unintentionally.
Die Erfindung beseitigt diesen Mangel dadurch, daß die Membran in den Deckel unao abhängig· von der Deckelabdichtung eingespannt ist und die Dichtungsfugen sowohl der Deckel- wie der Membranabdichtung voneinander getrennt in die Hauptgasleitung einmünden. Infolge dieser Anordnung kann in dem Steuerraum niemals ein. unerwünschter Druckabfall entstehen. Es kann vielmehr höchstens vorkommen, daß in dem Steuerraum dauernd der Gashochdruck herrscht, der aber das Membranventil geschlossen hält. Die Erfindung ist in der Zeichnung an einem Ausführungsbeispiel veranschaulicht, und zwar zeigt die Abbildung einen senkrechten Längsschnitt durch ein Membranventil. Der Gehäuseunterteil 1 hat einen Stutzen 2 für den Einlaß und einen Stutzen 3 für den Auslaß des Gases. 4 ist der Ventilsitz und 5 der Ventilkörper, der an einer Membran 6 befestigt ist. Über der Membran 6 liegt der Steuerraum 7, der nach außen durch einen abnehmbaren Gelläusedeckel 8 abgeschlossen ist. Das Steuergas wird durch eine Nebenleitung 9 dem 'Steuerraum 7 zugeführt, aus dem es durch eine Leitung 10 abfließt, in der beliebige Steuerventile 15 angeordnet sein können. Staut sich das Gas im Steuerraum 7, weil sich, eines der Steuerventile 15 geschlossen hat, so bewirkt, sobald der Druck im Steuerraum annähernd die gleiche Höhe erreicht hat, die in der Hauptleitung herrscht, eine auf das Ventil drückende Feder 19 das Schließen des Ventils. Der Gehäusedeckel· 8 liegt mit seinem Flansch 11 auf einem entsprechenden Flansch 12 des Gehäuseunterteils 1 dichtend auf und trägt einen zylindrischen Ansatz 13, der in eine Öffnung des Gehäuseunterfceils 1 greift. Die Membran 6 ruht mit ihrem Rande auf einer ringförmigen 'Schulter 14 "des Gehäusedeckels und wird unter Zwischenschaltung eines elastischen Ringes 16 durch einen Gewindering 17 fest gegen ihr Auflager gepreßt. Die Dichtungsfläche 14 für die Membran und die Dichtungsflächen n, 12 zwischen dem Gehäuseunterteil 1 und seinem Deckel 8 sind also voneinander getrennt. Entsteht zwischen der Membran 6 und dem Dekkel 8 eine Undichtheit, so bildet diese nur eine Verbindung des Steuerraumes 7 mit dem Hochdruckraum 18 im Gehäuseunterteil. Es strömt also höchstens das Gas von der Hochdruckseite 18 nach der Steuerseite 7 und ruft in dem Steuerraum 7 eine Druckerhöhung hervor, die das Regelventil schließt. Auch, eine Undichtheit zwischen den Flanschen 11, 12 des Gehäusedeckels und -Unterteils hat keinen Einfluß auf den Druck im Steuerraum 7.The invention overcomes this deficiency in that the membrane is unao in the lid depending on the cover seal and the sealing joints both the The cover and the membrane seal open into the main gas line separately from one another. As a result of this arrangement can never be in the control room. undesired pressure drop arise. Rather, it can at most it can happen that there is constant high gas pressure in the control room, but which keeps the diaphragm valve closed. The invention is shown in the drawing Illustrates an embodiment, namely the figure shows a vertical longitudinal section through a diaphragm valve. The lower housing part 1 has a connecting piece 2 for the inlet and a connecting piece 3 for the Outlet of the gas. 4 is the valve seat and 5 is the valve body, which is attached to a membrane 6 is attached. Over the membrane 6 is the control chamber 7, which is outwardly through a removable cover 8 is complete. The control gas is fed through a secondary line 9 to the control room 7, from which it flows through a line 10 in which any control valves 15 are arranged could be. If the gas accumulates in the control room 7, because one of the control valves 15 has closed, as soon as the pressure in the control room is approximately has reached the same height that prevails in the main line, one on the valve pressing spring 19 closes the valve. The housing cover 8 lies with its Flange 11 sealingly on and on a corresponding flange 12 of the lower housing part 1 carries a cylindrical extension 13 which engages in an opening of the lower housing 1. The edge of the membrane 6 rests on an annular 'shoulder 14 "of the housing cover and is with the interposition of an elastic ring 16 by a threaded ring 17 pressed firmly against its support. The sealing surface 14 for the membrane and the sealing surfaces n, 12 between the lower housing part 1 and its cover 8 are therefore separated from one another. Arises A leak between the membrane 6 and the cover 8 is only formed a connection between the control chamber 7 and the high pressure chamber 18 in the lower part of the housing. It So at most the gas flows from the high pressure side 18 to the control side 7 and calls in the control chamber 7 a pressure increase emerges, which closes the control valve. Even, has a leak between the flanges 11, 12 of the housing cover and lower part no influence on the pressure in the control room 7.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB155481D DE600738C (en) | Diaphragm gas valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB155481D DE600738C (en) | Diaphragm gas valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE600738C true DE600738C (en) | 1934-07-30 |
Family
ID=7003292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB155481D Expired DE600738C (en) | Diaphragm gas valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE600738C (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677390A (en) * | 1949-03-03 | 1954-05-04 | Permutit Co | Diaphragm valve |
DE945885C (en) * | 1952-06-11 | 1956-07-19 | Albert Ziegler Fa | Pilot operated overpressure valve for hose lines |
DE1020502B (en) * | 1954-10-18 | 1957-12-05 | Separator Ab | Valve for the automatic absatzweiwsen supply of air or another gas to a pipeline or the like. |
DE1026589B (en) * | 1954-05-13 | 1958-03-20 | Pleiger Maschf Paul | Valve actuated by the pressure medium to be shut off, with a pressure chamber covered by a centrally flowed membrane |
DE1028846B (en) * | 1952-12-19 | 1958-04-24 | C Eitle Maschf | Device for controlling a flowing medium through a second medium |
DE1055910B (en) * | 1957-03-28 | 1959-04-23 | P F Forbach Appbau | Foot operated valve |
DE1086099B (en) * | 1958-11-06 | 1960-07-28 | Siemens Ag | Valve with a remote-controlled compressed air drive according to the delivery of a predetermined amount |
US2960104A (en) * | 1955-08-15 | 1960-11-15 | Tokheim Corp | Gas separator and eliminator with servo vent valve |
DE1139339B (en) * | 1959-09-05 | 1962-11-08 | Continental Gummi Werke Ag | Hose valve with return springs acting on the locking piece |
DE1245240B (en) * | 1963-06-21 | 1967-07-20 | Bendix Corp | Valve to control the connection between three pressure chambers |
US3364946A (en) * | 1963-12-18 | 1968-01-23 | Alfa Laval Ab | Pulsator for pneumatic pipelines |
DE1267462B (en) * | 1963-03-02 | 1968-05-02 | Macpennys Mist Propagation Ltd | Device for periodic watering |
EP0301202A2 (en) * | 1987-07-28 | 1989-02-01 | WABCO Vermögensverwaltungs-GmbH | Valve device for fluids under pressure |
-
0
- DE DEB155481D patent/DE600738C/en not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677390A (en) * | 1949-03-03 | 1954-05-04 | Permutit Co | Diaphragm valve |
DE945885C (en) * | 1952-06-11 | 1956-07-19 | Albert Ziegler Fa | Pilot operated overpressure valve for hose lines |
DE1028846B (en) * | 1952-12-19 | 1958-04-24 | C Eitle Maschf | Device for controlling a flowing medium through a second medium |
DE1026589B (en) * | 1954-05-13 | 1958-03-20 | Pleiger Maschf Paul | Valve actuated by the pressure medium to be shut off, with a pressure chamber covered by a centrally flowed membrane |
DE1020502B (en) * | 1954-10-18 | 1957-12-05 | Separator Ab | Valve for the automatic absatzweiwsen supply of air or another gas to a pipeline or the like. |
US2960104A (en) * | 1955-08-15 | 1960-11-15 | Tokheim Corp | Gas separator and eliminator with servo vent valve |
DE1055910B (en) * | 1957-03-28 | 1959-04-23 | P F Forbach Appbau | Foot operated valve |
DE1086099B (en) * | 1958-11-06 | 1960-07-28 | Siemens Ag | Valve with a remote-controlled compressed air drive according to the delivery of a predetermined amount |
DE1139339B (en) * | 1959-09-05 | 1962-11-08 | Continental Gummi Werke Ag | Hose valve with return springs acting on the locking piece |
DE1267462B (en) * | 1963-03-02 | 1968-05-02 | Macpennys Mist Propagation Ltd | Device for periodic watering |
DE1245240B (en) * | 1963-06-21 | 1967-07-20 | Bendix Corp | Valve to control the connection between three pressure chambers |
US3364946A (en) * | 1963-12-18 | 1968-01-23 | Alfa Laval Ab | Pulsator for pneumatic pipelines |
EP0301202A2 (en) * | 1987-07-28 | 1989-02-01 | WABCO Vermögensverwaltungs-GmbH | Valve device for fluids under pressure |
EP0301202A3 (en) * | 1987-07-28 | 1990-03-07 | Wabco Westinghouse Fahrzeugbremsen Gmbh | Valve device for fluids under pressure |
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