DE157791C - - Google Patents

Info

Publication number
DE157791C
DE157791C DENDAT157791D DE157791DA DE157791C DE 157791 C DE157791 C DE 157791C DE NDAT157791 D DENDAT157791 D DE NDAT157791D DE 157791D A DE157791D A DE 157791DA DE 157791 C DE157791 C DE 157791C
Authority
DE
Germany
Prior art keywords
valve
steam
cone
spring
cylinder
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.)
Active
Application number
DENDAT157791D
Other languages
German (de)
Publication of DE157791C publication Critical patent/DE157791C/de
Active legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20Excess-flow valves
    • F16K17/22Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Claims (1)

KAISERLICHES Λ IMPERIAL Λ Die Wirkung der bei Rohrbruch selbsttätig absperrenden Ventile beruht auf der· Voraussetzung, daß eine bestimmte Dampfgeschwindigkeit mit Sicherheit den Schluß des Ventils herbeiführt. Diese Voraussetzung trifft jedoch nicht zu, sobald Führungsflächen an dem Ventil oder Stopfbüchsen in Verbindung mit demselben vorhanden sind, die durch Festbrennen, durch Rost oder mitgerissene Unreinigkeiten des Dampfes einen Reibungswiderstand beim Schluß des Ventils herbeiführen können.The effect of the valves, which shut off automatically in the event of a pipe break, is based on the Assumption that a certain steam speed with certainty the end of the valve. However, this requirement does not apply as soon as guide surfaces on the valve or stuffing boxes in connection with the same, caused by burning, rusting or being entrained Impurities in the steam can cause frictional resistance when the valve is closed. Die bisher angewendeten Ventile ohne derartige reibende Flächen haben den Übelstand, daß sie sich schon bei einer geringeren als der für den Schluß festgesetzten Dampfgeschwindigkeit bewegen und dadurch fortwährend klappern und sich abnutzen. Die Ein.stellbarkoit der Empfindlichkeit derselbenThe valves used so far without such rubbing surfaces have the disadvantage that they are already at a lower steam speed than the one fixed for the end move and thereby continually rattle and wear out. The adjustable sensitivity of the same ao durch Verengung des Durchgangs(|ucrschnittes des Dampfes fuhrt außerdem leicht zu unerwünschten Verlusten durch Drosselung.ao by narrowing the passage (| section of the steam also easily leads to undesirable Losses due to throttling. Die vorliegende Bauart bezweckt, den Ventilkegel unter Vermeidung irgendwelcherThe purpose of the present design is to remove the valve cone while avoiding any as reibenden Flachen so anzubringen, daß er erst bei Überschreitung einer bestimmten Dampfgeschwindigkeit sich bewegen und die Durchgangsoffnung abschließen kann.to attach the rubbing surfaces so that it when a certain steam speed is exceeded move and the passage opening can complete. Zu diesem Zwecke wird der gegenüber der Durchgangsöffnung befindliche Ventilkegel ν 3ο durch eine von außen mittels der Schraube s zu spannende Feder f mittels der Rippen r gegen die scharfkantig gedrehte Stirnfläche des Zylinders c gedrückt. Der Ventilkegel kann kugelig oder flach gedreht sein, und der Zylinder c kann auch durch andere geeignete Stützpunkte ersetzt werden. Führungsflächen, die Reibung hervorrufen und so die Bewegung des Kegels in gegebenem Falle hindern könnten, sind also nicht vorhanden, und der Kegel kann sich erst dann bewegen, wenn die gesteigerte Geschwindigkeit des Dampfes die Federspannung überwindet. For this purpose, the valve cone ν 3ο located opposite the through opening is pressed by means of the ribs r against the sharp-edged rotated end face of the cylinder c by a spring f , which is to be tensioned from the outside by means of the screw s . The valve cone can be turned spherically or flat, and the cylinder c can also be replaced by other suitable support points. There are no guide surfaces that could cause friction and thus hinder the movement of the cone in a given case, and the cone can only move when the increased speed of the steam overcomes the tension of the spring. Ρλτκντ-Ansi'Uucu :Ρλτκντ-Ansi'Uucu: Bei Rohrbruch selbsttätig absperrendes Ventil mit einstellbarer Federbclastung, dadurch gekennzeichnet, daß der Ventilkegel' frei ohne jede Führungsflächen an der Belastungsfeder hängt, wobei er sich in seiner Ruhelage mit Rippen (r r) gegen die zugeschärfte Stirnwand eines Zylinders (c) legt.Automatic shut-off valve with adjustable spring loading in the event of a pipe rupture, characterized in that the valve cone hangs freely on the loading spring without any guide surfaces, and in its rest position it rests with ribs (rr) against the sharpened end wall of a cylinder (c) . Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT157791D Active DE157791C (en)

Publications (1)

Publication Number Publication Date
DE157791C true DE157791C (en)

Family

ID=424027

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
DE (1) DE157791C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045201B (en) * 1957-03-16 1958-11-27 Michael Schatz Pipe or hose rupture valve
DE1266587B (en) * 1966-01-12 1968-04-18 Bastian Blessing Co Pipe connection with automatic shut-off valve
DE4228412A1 (en) * 1992-08-26 1994-03-10 Cerpraecis Anwendungen Fuer In Fluid stop-valve with tapering plug - has passage, with inlet and outlet, into which tapered plug slides, having sealing faces in transverse outlet union

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045201B (en) * 1957-03-16 1958-11-27 Michael Schatz Pipe or hose rupture valve
DE1266587B (en) * 1966-01-12 1968-04-18 Bastian Blessing Co Pipe connection with automatic shut-off valve
DE4228412A1 (en) * 1992-08-26 1994-03-10 Cerpraecis Anwendungen Fuer In Fluid stop-valve with tapering plug - has passage, with inlet and outlet, into which tapered plug slides, having sealing faces in transverse outlet union

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