DE840180C - Shut-off valve - Google Patents
Shut-off valveInfo
- Publication number
- DE840180C DE840180C DEG3744A DEG0003744A DE840180C DE 840180 C DE840180 C DE 840180C DE G3744 A DEG3744 A DE G3744A DE G0003744 A DEG0003744 A DE G0003744A DE 840180 C DE840180 C DE 840180C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- shut
- air
- cavities
- liquid
- 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
- 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
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Description
Bei Absperrventilen, -die mit Doppelkegelverschluß arbeiten, bei denen also die Ventilkegel ähnlich wie die Spannbacken eines Parallelschräubstocks gegen einen doppelseitigen Sitz gepreßt werden, können, wenn derartige Ventile für Flüssigkeiten verwendet werden, Schwierigkeiten durch die Dehnung der zwischen beiden Kegeln eingesperrfen Flüssigkeit bei höheren Temperaturen entstehen. Die Flüssigkeit, welche bei ihrer Ausdehnung keinen Raum findet, preßt die beiden Kegel auseinander und erzeugt dadurch, zumal die Ausdehnungskräfte.sehr groß sein können, eine Undichtigkeit oder eine Überbeanspruchung der Bauteile.In the case of shut-off valves that work with a double cone lock, in which so the valve cone similar to the jaws of a parallel vise against A double-sided seat can be pressed, if such valves for liquids used to trap difficulties due to the stretching between the two cones Liquid arise at higher temperatures. The liquid which in her There is no room for expansion, presses the two cones apart and thereby creates especially since the expansion forces can be very large, a leak or a Overstressing of the components.
Gemäß der Erfindung werden diese Schwierigkeiten dadurch vermieden, daß der nach oben liegende Kegel über der Ebene der unteren Dichtungskante Hohlräume enthält, . in denen sich Luft ansammelt. Die Hohlräume können dabei so geformt werden, daß die Luft auch 'durch die ausströmende Flüssigkeit nicht herausgerissen wird. Normalerweise wird die Luft, infolge des wesentlich größeren spezifischen Gewichts der Flüssigkeit, ein starkes Beharrungsvermögen haben, so daß bei zweckin,-ißiger Form der Hohlräume mit der Anwesenheit von Luft, die die Dehnung der Flüssigkeit auffängt, sicher gerechnet werden kann.According to the invention, these difficulties are avoided by that the upward cone above the level of the lower sealing edge cavities contains,. in which air collects. The cavities can be shaped in such a way that that the air is not torn out by the liquid flowing out. Normally, the air is due to its much larger specific weight of the fluid, have a strong ability to persist, so that in the case of purposefulness Shape the voids with the presence of air, which causes the expansion of the liquid catches, can be safely calculated.
In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. In einem nicht gezeichneten Ventilgehäuse ist ein Sitzflansch a mit einander gegenüberliegenden Dichtungsflächen b und c angeordnet, gegen die sich Kegel d und e anlegen, welche, beim ,Öffnen und Schließen durch eine gemeinsame Gewindespindel f voneinander bzw. gegeneinander bewegt werden.In the figure, an embodiment of the invention is shown. In a valve housing, not shown, there is a seat flange a with opposite one another Sealing surfaces b and c arranged against which cones d and e rest, which, when opening and closing by a common threaded spindle f from each other or are moved against each other.
Im oberen Kegel d sind zwei Hohlräume g und h über der Ebene der unteren Dichtungskante angeordnet. Zwischen den beiden Hohlräumen ist bei diesem Ausführungsbeispiel eine Leitfläche i vorgesehen, die ein Mitreißen der in dem Hohlraum h vorhandenen Luft verhindert, so daß, falls die Luft aus dem Raum g durch Mitreißen entweichen sollte,-zum mindesten der Raum 1i als Luftpolster erhalten bleibt.In the upper cone d , two cavities g and h are arranged above the plane of the lower sealing edge. In this embodiment, a guide surface i is provided between the two cavities, which prevents the air present in cavity h from being entrained, so that if the air should escape from space g by entrainment, at least space 1i is retained as an air cushion .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG3744A DE840180C (en) | 1951-09-27 | 1951-09-27 | Shut-off valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG3744A DE840180C (en) | 1951-09-27 | 1951-09-27 | Shut-off valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE840180C true DE840180C (en) | 1952-05-29 |
Family
ID=7117250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG3744A Expired DE840180C (en) | 1951-09-27 | 1951-09-27 | Shut-off valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE840180C (en) |
-
1951
- 1951-09-27 DE DEG3744A patent/DE840180C/en not_active Expired
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