DE857723C - High pressure valve, especially for safety purposes or for pressure reduction - Google Patents
High pressure valve, especially for safety purposes or for pressure reductionInfo
- Publication number
- DE857723C DE857723C DEB7313D DEB0007313D DE857723C DE 857723 C DE857723 C DE 857723C DE B7313 D DEB7313 D DE B7313D DE B0007313 D DEB0007313 D DE B0007313D DE 857723 C DE857723 C DE 857723C
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- valve
- safety purposes
- high pressure
- spring
- 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
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Description
Die Wirkungsweise von Sicherheitsventilen beruht bekanntlich darauf, daß ein Ventilteller oder -kegel durch eine Feder oder ein Gewicht belastet wird. Erreicht nun der unter dem Teller oder Kegel befindliche Druck die Feder- oder Gewichtsbelastung, so wird der Teller oder Kegel abgehoben, und das Ventil bläst ab.The mode of operation of safety valves is known to be based on that a valve disc or cone is loaded by a spring or a weight. If the pressure under the plate or cone now reaches the spring or weight load, so the plate or cone is lifted off and the valve blows off.
Der Druck P in Atmosphären, bei dem das Ab- blasen erfolgen soll, ist dann bestimmt einerseits durch die Federkraft P, anderseits durch die Teller-oder Kegelfläche F. Im Augenblick des Abblasens muß die Federkraft P gleich dem auf den Teller oder Kegel von unten wirkenden Innendruck F - p sein. Die Fläche F ist wegen der aus Festigkeitsgründen erforderlichen Breite der Dichtfläche aber nicht eindeutig bestimmt, sondern bewegt sich zwischen den Grenzwerten wobei di den inneren, d. den äußeren Durchmesser der abdichtenden Ringfläche bedeutet.The pressure P in the atmosphere at which the blow-off is to take place is then determined on the one hand by the spring force P and on the other hand by the plate or cone surface F. At the moment of blowing, the spring force P must be equal to that on the plate or cone from below acting internal pressure be F - p . Because of the width of the sealing surface required for reasons of strength, the area F is not clearly determined, but moves between the limit values where di is the inner, d. means the outer diameter of the sealing ring surface.
Entsprechend der verschiedenen Größe der Flächen F, und F, bewegt sich auch der von unten auf den Teller oder Kegel wirkende Innendruck zwischen F, - p und F, - p. Diesem veränderlichen Innendruck steht die konstante Feder- bder Gewichtsbelastung gegenüber, so daß der Abblasedruck dadurch recht unbestimmt ist.Corresponding to the different sizes of the areas F, and F, the internal pressure acting from below on the plate or cone also moves between F, - p and F, - p. This variable internal pressure is countered by the constant suspension of the weight load, so that the blow-off pressure is therefore quite indeterminate.
Bei Ventilen für geringere Drücke, z. B. bis 2oo at, spielt diese verschiedene Größe der Flächen F, und F, und dementsprechend des von unten wirkenden Druckes F, - p und F, - p keine große Rolle, da der Unterschied der Flächen F, und F, gering gehalten werden kann.For valves for lower pressures, e.g. B. up to 2oo at, this different size of the areas F, and F, and accordingly the pressure F, - p and F, - p acting from below does not play a major role, since the difference between the areas F, and F, is kept small can.
Anders liegen die Verhältnisse bei Sicherheitsventilen für hohe und sehr hohe Drücke, z. B. über 2oo at, beispielsweise iooo oder io ooo at. Bei diesen muß die Dichtringfläche f aus Gründen der Festigkeit (die Dichtfläche f muß im drucklosen Zustand ja die sehr hohe Feder- bzw. Gewichtsbelastung P ohne Beschädigung aufnehmen) ausreichend breit gehalten werden, wodurch sich ein großer Unterschied zwischen di und d" bzw. F, und F, ergibt.The situation is different with safety valves for high and very high pressures, e.g. B. about 2oo, at for example iooo or io ooo at. In these, the sealing ring area must f reasons of strength (the sealing surface f must under no pressure, so absorb the very high spring or weight load P without damage) can be kept sufficiently wide, which results in a large difference between di and d "or F 1 and F 1.
Da es von vornherein nicht bestimmbar ist, sondern von Zufälligkeiten der Montage und der Werkstattgenauigkeit abhängt, welche der Flächen F, oder F, für das Abblasen des Sicherheitsventils maßgebend ist, wird ein Sicherheitsventil für hohe und höchste Drücke bei vorher nicht bestimmbaren Überdrücken P abblasen. Beispielsweise ergeben sich bei Sicherheitsventilen für 3ooo at Betriebsdruck Unterschiede zwischen den Flächen F, und F, von etwa 30 0/,. Das würde heißen, daß ein solches Ventil bei gleicher Feder- oder Gewichtsbelastung P einmal bei 3ooo at und ein anderes Mal bei 3goo at abbläst, ohne daß sich dies vorher willkürlich regeln läßt. Ein solches Sicherheitsventil wäre praktisch unbrauchbar.Since it cannot be determined from the outset, but depends on the randomness of the assembly and the workshop accuracy, which of the surfaces F or F is decisive for blowing off the safety valve, a safety valve for high and highest pressures will blow off at overpressures P that cannot be determined beforehand. For example, in the case of safety valves for 3,000 at operating pressure, there are differences between the areas F 1 and F 1 of about 30 0/1. That would mean that with the same spring or weight load P such a valve blows off once at 3ooo at and another time at 3oo at, without this being able to be regulated arbitrarily beforehand. Such a safety valve would be practically useless.
Die vorstehende Erfindung vermeidet nun diese Unbestimmtheit auf folgende Weise: Bei Einstellung der Belastung P wird von vornherein damit gerechnet, daß die größere Fläche F, für das Abblasen maßgebend ist. In vorstehendem Zahlenbeispiel ergäbe sich dann eine Belastung von 3900 kg, wenn F, = i cm2 und F, = 1,3 cm' beträgt. Um nun ein Abblasen mit Bestimmtheit bei 3000 at zu gewährleisten, wird die Belastung auf 3goo kg eingestellt. Erreicht nun der Innendruck 3ooo at, so wird mit Hilfe eines Kontaktmanometers ein Hubmagnet eingeschaltet, durch dessen Zugkraft von goo kg die überschüssige Belastung, die im ungünstigsten Grenzfall goo kg # 3goo bis 3ooo kg beträgt, überwunden wird. Da bei derartigen Drücken kleine Hübe von z. B. 0,5 mm völlig ausreichen, um einen gefährlichen Überdruck durch Äbblasen des Sicherheitsventils zu entfernen, ist ein Hubmagnet von goo kg Tragkraft verhältnismäßig klein und technisch ohne großen Aufwand herstellbar, wie die Abbildung zeigt.The present invention now avoids this uncertainty in the following way: When the load P is set, it is assumed from the outset that the larger area F is decisive for the blow-off. In the numerical example above, there would be a load of 3900 kg if F, = i cm2 and F, = 1.3 cm '. In order to ensure that the air is blown off with certainty at 3000 atm, the load is set to 3000 kg . If the internal pressure now reaches 3ooo at, a lifting magnet is switched on with the help of a contact manometer, through whose tensile force of goo kg the excess load, which in the most unfavorable limit case is goo kg # 3goo to 3ooo kg, is overcome. Since at such pressures small strokes of z. B. 0.5 mm is sufficient to remove a dangerous overpressure by blowing the safety valve, a lifting magnet of goo kg load capacity is relatively small and technically easy to manufacture, as the figure shows.
In ihr ist i das Ventilgehäuse, 2 der Ventilkegel, 3 die Dichtfläche, 4 die Hochdruckseite (Druckeintrittsseite), 5 die Niederdruckseite (Abblase- bzw. Überströmseite), 6 die Belastungsfeder, 7 der Hubmagnet, 8 der Magnetteller, 9 die Magnetwicklung.In it i is the valve housing, 2 the valve cone, 3 the sealing surface, 4 the high pressure side (pressure inlet side), 5 the low pressure side (exhaust or overflow side), 6 the loading spring, 7 the lifting magnet, 8 the magnet plate, 9 the magnet winding.
Das Ventil der oben beschriebenen Bauart ist bei entsprechender Bemessung und Steuerung der Kontaktgebung von der Niederdruckseite her gleicherweise als Druckminderventil zur Erzielung eines konstanten einstellbaren Niederdruckes geeignet, wobei ein gewisser Streubereich des Hochdruckes bei konstanter, aber von Hand veränderlicher Federspannung bestrichen werden kann.The valve of the type described above is with appropriate dimensioning and control of the contacting from the low-pressure side in the same way as a pressure reducing valve suitable for achieving a constant adjustable low pressure, with a certain Scatter range of the high pressure with constant, but manually variable spring tension can be coated.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB7313D DE857723C (en) | 1944-06-04 | 1944-06-04 | High pressure valve, especially for safety purposes or for pressure reduction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB7313D DE857723C (en) | 1944-06-04 | 1944-06-04 | High pressure valve, especially for safety purposes or for pressure reduction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE857723C true DE857723C (en) | 1952-12-01 |
Family
ID=6955283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB7313D Expired DE857723C (en) | 1944-06-04 | 1944-06-04 | High pressure valve, especially for safety purposes or for pressure reduction |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE857723C (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1006686B (en) * | 1955-06-10 | 1957-04-18 | Bopp & Reuther Gmbh | Safety valve, especially for steam systems, with an external pressure medium, e.g. B. pressure oil, acted upon piston |
DE1009875B (en) * | 1955-07-16 | 1957-06-06 | Bopp & Reuther Gmbh | Safety valve, especially for steam systems, with an external pressure medium, e.g. Pressurized oil, pressurized piston |
DE1034442B (en) * | 1957-02-27 | 1958-07-17 | Bopp & Reuther Gmbh | Device for safety valves with spring loading and a controlled additional load brought about by an external medium |
DE1049184B (en) * | 1956-11-07 | 1959-01-22 | Frieseke & Hoepfner Gmbh | Pressure relief valve for hydraulic systems |
DE1063868B (en) * | 1957-05-15 | 1959-08-20 | Frieseke & Hoepfner Gmbh | Fast closing pressure relief valve for hydraulic systems |
DE1064310B (en) * | 1955-07-26 | 1959-08-27 | Saint Gobain | Pneumatically operated slide |
DE1074938B (en) * | 1960-02-04 | Dunlop Rubber Company Limited, London | Pressure medium control device with relieved closure piece | |
DE1077496B (en) * | 1958-03-29 | 1960-03-10 | Fritz Maus | Valve with drive by the pressure medium to be shut off and control by a preferably electromagnetic auxiliary valve |
DE1103248B (en) * | 1959-03-12 | 1961-03-23 | Wilke Werke Ag | Emergency ventilation and venting device for containers filled with flammable liquids |
DE1121894B (en) * | 1958-01-17 | 1962-01-11 | Licentia Gmbh | Hydraulic drive for shut-off devices, especially for turbine quick-closing valves |
DE1126209B (en) * | 1960-03-24 | 1962-03-22 | Bopp & Reuther Gmbh | Additional loaded safety valve |
DE1195567B (en) * | 1962-06-08 | 1965-06-24 | Erich Herion | Automatic valve for emptying a pressure chamber of a working piston filled with a gaseous pressure medium |
DE1253536B (en) * | 1961-04-10 | 1967-11-02 | Robert S Willis | Pressurized shut-off valve with auxiliary valves |
DE1262714B (en) * | 1964-05-02 | 1968-03-07 | Bopp & Reuther Gmbh | Safety valve with an additional closing force |
DE1500256A1 (en) | 1964-11-30 | 1969-05-22 | Schrupp & Co | Safety device for pressure medium tank |
DE1626213B1 (en) * | 1963-04-24 | 1970-12-17 | Arap Armaturen U App Gmbh | Pressure reducing control valve for steam |
FR2522770A1 (en) * | 1981-10-30 | 1983-09-09 | Framatome Sa | Safety valve for nuclear reactor circuit - with electromagnetic control to prevent vibration on closure of valve |
US6021963A (en) * | 1997-12-23 | 2000-02-08 | Caterpillar Inc. | Cartridge control valve with top mounted solenoid and flat valve seat for a fuel injector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE554606C (en) * | 1931-04-09 | 1932-07-11 | Fritz Sedlmayer | Electric drive device for valves, slide valves, etc. like |
-
1944
- 1944-06-04 DE DEB7313D patent/DE857723C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE554606C (en) * | 1931-04-09 | 1932-07-11 | Fritz Sedlmayer | Electric drive device for valves, slide valves, etc. like |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074938B (en) * | 1960-02-04 | Dunlop Rubber Company Limited, London | Pressure medium control device with relieved closure piece | |
DE1006686B (en) * | 1955-06-10 | 1957-04-18 | Bopp & Reuther Gmbh | Safety valve, especially for steam systems, with an external pressure medium, e.g. B. pressure oil, acted upon piston |
DE1009875B (en) * | 1955-07-16 | 1957-06-06 | Bopp & Reuther Gmbh | Safety valve, especially for steam systems, with an external pressure medium, e.g. Pressurized oil, pressurized piston |
DE1064310B (en) * | 1955-07-26 | 1959-08-27 | Saint Gobain | Pneumatically operated slide |
DE1049184B (en) * | 1956-11-07 | 1959-01-22 | Frieseke & Hoepfner Gmbh | Pressure relief valve for hydraulic systems |
DE1034442B (en) * | 1957-02-27 | 1958-07-17 | Bopp & Reuther Gmbh | Device for safety valves with spring loading and a controlled additional load brought about by an external medium |
DE1063868B (en) * | 1957-05-15 | 1959-08-20 | Frieseke & Hoepfner Gmbh | Fast closing pressure relief valve for hydraulic systems |
DE1121894B (en) * | 1958-01-17 | 1962-01-11 | Licentia Gmbh | Hydraulic drive for shut-off devices, especially for turbine quick-closing valves |
DE1077496B (en) * | 1958-03-29 | 1960-03-10 | Fritz Maus | Valve with drive by the pressure medium to be shut off and control by a preferably electromagnetic auxiliary valve |
DE1103248B (en) * | 1959-03-12 | 1961-03-23 | Wilke Werke Ag | Emergency ventilation and venting device for containers filled with flammable liquids |
DE1126209B (en) * | 1960-03-24 | 1962-03-22 | Bopp & Reuther Gmbh | Additional loaded safety valve |
DE1253536B (en) * | 1961-04-10 | 1967-11-02 | Robert S Willis | Pressurized shut-off valve with auxiliary valves |
DE1195567B (en) * | 1962-06-08 | 1965-06-24 | Erich Herion | Automatic valve for emptying a pressure chamber of a working piston filled with a gaseous pressure medium |
DE1626213B1 (en) * | 1963-04-24 | 1970-12-17 | Arap Armaturen U App Gmbh | Pressure reducing control valve for steam |
DE1262714B (en) * | 1964-05-02 | 1968-03-07 | Bopp & Reuther Gmbh | Safety valve with an additional closing force |
DE1500256A1 (en) | 1964-11-30 | 1969-05-22 | Schrupp & Co | Safety device for pressure medium tank |
FR2522770A1 (en) * | 1981-10-30 | 1983-09-09 | Framatome Sa | Safety valve for nuclear reactor circuit - with electromagnetic control to prevent vibration on closure of valve |
US6021963A (en) * | 1997-12-23 | 2000-02-08 | Caterpillar Inc. | Cartridge control valve with top mounted solenoid and flat valve seat for a fuel injector |
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