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DE886748C - High lift safety valve for steam boiler - Google Patents

High lift safety valve for steam boiler

Info

Publication number
DE886748C
DE886748C DEK805D DEK0000805D DE886748C DE 886748 C DE886748 C DE 886748C DE K805 D DEK805 D DE K805D DE K0000805 D DEK0000805 D DE K0000805D DE 886748 C DE886748 C DE 886748C
Authority
DE
Germany
Prior art keywords
valve
main valve
safety valve
lift safety
steam boiler
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
Application number
DEK805D
Other languages
German (de)
Inventor
Friedrich Sindram
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
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 Knorr Bremse AG filed Critical Knorr Bremse AG
Priority to DEK805D priority Critical patent/DE886748C/en
Application granted granted Critical
Publication of DE886748C publication Critical patent/DE886748C/en
Expired 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
    • 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
    • F16K17/08—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 with special arrangements for providing a large discharge passage

Landscapes

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

Description

Die Erfindung betrifft ein Hochhubsicherheitsventil und hat zur Aufgabe, bei einem solchen in einfachster baulicher Ausführung Mittel vorzusehen, durch welche der Schließdruck in einer mit Kesseldampf gefüllten Gegendruckkammer bei Beginn der Schließbewegung des Hauptventils auf voller Kesselspannungshöhe gehalten bzw. auf diese _er_höht wird;- falls er vorher geringer war.The invention relates to a high-lift safety valve and has the task of in such a simple structural design to provide means through which the closing pressure in a back pressure chamber filled with boiler steam at the beginning the closing movement of the main valve is kept at full boiler voltage level or on this _increased_; - if it was previously lower.

Diese Mittel bestehen darin, daß im Körper des Hauptventils von einem Regelventil der Schließdruckkammer überwachte Kanäle angeordnet sind. die nur bei Beginn der Schließbewegung des Hauptventils vom Regelventil freigegeben werden und eine zusätzliche Füllung der Gegendruckkammer mit Kesseldampf ermöglichen, wodurch der auf das Hauptventil wirkende Schließdruck vermehrt wird.These means consist in that in the body of the main valve of one Control valve of the closing pressure chamber monitored channels are arranged. the only at The control valve releases the start of the closing movement of the main valve and allow an additional filling of the back pressure chamber with boiler steam, whereby the closing pressure acting on the main valve is increased.

Das Hochhubsicherheitsventil nach der Erfindung ist in der Zeichnung im senkrechten Längsschnitt veranschaulicht. Der Körper des Häuptventils 5 hat neben den Bohrungen 8 zusätzliche Bohrungen oder Kanäle 8a. Die unteren Mündungen dieser zusätzlichen Kanäle liegen-. auf der Unterseite des Körpers des Hauptventils 5, und zwar oberhalb und außerhalb des Ventilsitzes. Die oberen Mändungen liegen dichter nach der Mitte des Ventilkörpers hin und sind so angeordnet, daß sie durch das Regelventil io bedeckt werden, wenn dieses auf dem Hauptventil 5' ruht. Wenn das Hauptventil 5 seinen vollen Öffnungshub ausgeführt hat und die Auslaßöffnung der Gegendruckkammer 9 geschlossen, bält, und wenn infolge Absinkens des Kesseldrucks. das Hauptventil 5 sich in Richtung auf seinen Sitz hin zu bewegen sucht, so hebt es sich von dem in seiner oberen Lage verbleibenden Regelventil io ab. Die Kanäle 8a stellen eine zusätzliche Verbindung zwischen dem Datnpfraurn des Kessels und der Gegendruckkammer 9 her. und der in dieser wirkende Kesseldruck sorgt für -schnelles Schließen des Hauptventils 5 und unterstützt so die Wirkung der in ihrer Spannung nachlassenden Feder i.The high-lift safety valve according to the invention is shown in the drawing illustrated in vertical longitudinal section. The body of the main valve 5 has next the holes 8 additional holes or channels 8a. The lower mouths of this additional channels. on the bottom of the body of the main valve 5, namely above and outside the valve seat. The upper mouths are closer towards the center of the valve body and are arranged so that they pass through the control valve io are covered when this rests on the main valve 5 '. When the main valve 5 has carried out its full opening stroke and the outlet opening of the back pressure chamber 9 closed, holds, and if as a result of a drop in boiler pressure. the main valve 5 seeks to move in the direction of its seat, it stands out from that control valve io remaining in its upper position. The channels 8a represent a additional connection between the data space of the boiler and the back pressure chamber 9 ago. and the boiler pressure acting in this ensures rapid closing of the Main valve 5 and thus supports the effect of the decreasing tension Spring i.

Claims (1)

PATENTANSPRUCH: Hochhubsicherheitsventil für Dampfkessel, dadurch gekennzeichnet, daß im Körper des Hauptventils (5) vom Regelventil (io) der Schließdruckkammer (9) überwachte Kanäle ($a) - angeordnet sind, die nur bei Beginn der Schließbewegung des Hauptventils (5) vom Regelventil (io) freigegeben werden und eine zusätzliche Füllung der Gegendruckkammer mit Kesseldampf ermöglichen, wodurch der auf das Hauptventil (;) wirkende Schließdruck vermehrt wird.PATENT CLAIM: High-lift safety valve for steam boilers, thereby characterized in that in the body of the main valve (5) from the control valve (io) of the closing pressure chamber (9) monitored channels ($ a) - are arranged only at the beginning of the closing movement of the main valve (5) can be released by the control valve (io) and an additional Allow the back pressure chamber to be filled with boiler steam, causing the on the main valve (;) acting closing pressure is increased.
DEK805D 1942-06-05 1942-06-05 High lift safety valve for steam boiler Expired DE886748C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK805D DE886748C (en) 1942-06-05 1942-06-05 High lift safety valve for steam boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK805D DE886748C (en) 1942-06-05 1942-06-05 High lift safety valve for steam boiler

Publications (1)

Publication Number Publication Date
DE886748C true DE886748C (en) 1953-08-17

Family

ID=7208615

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK805D Expired DE886748C (en) 1942-06-05 1942-06-05 High lift safety valve for steam boiler

Country Status (1)

Country Link
DE (1) DE886748C (en)

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