DE507372C - Overflow valve - Google Patents

Overflow valve

Info

Publication number
DE507372C
DE507372C DESCH86450D DESC086450D DE507372C DE 507372 C DE507372 C DE 507372C DE SCH86450 D DESCH86450 D DE SCH86450D DE SC086450 D DESC086450 D DE SC086450D DE 507372 C DE507372 C DE 507372C
Authority
DE
Germany
Prior art keywords
pressure
piston
overflow valve
control piston
medium
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
DESCH86450D
Other languages
German (de)
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.)
Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
Original Assignee
Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
Publication date
Priority to DESCH86450D priority Critical patent/DE507372C/en
Application granted granted Critical
Publication of DE507372C publication Critical patent/DE507372C/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Servomotors (AREA)

Description

Vorliegende Erfindung betrifft ein Überströmventil mit Servomotor, welches den Durchfluß eines komprimierten Mediums von einer Primär- in eine Sekundärleitung regelt, in der Weise, daß ein Abfluß eines Überschusses aus der Primärleitung in eine Se· kundärleitung freigegeben wird, solange der Druck in der Primärleitung höher ist als ein beliebig einstellbares Minimum.The present invention relates to an overflow valve with a servomotor, which the Regulates the flow of a compressed medium from a primary to a secondary line, in such a way that an outflow of an excess from the primary line into a Se secondary line is released as long as the pressure in the primary line is higher than a arbitrarily adjustable minimum.

ίο In der Abbildung ist der Erfindungsgegenstand beispielsweise schematisch dargestellt. Der Raum unter dem Steuerkolben ι ist mit der Primärleitung 2 stets in Verbindung. Sobald der gewünschte Maximaldruck in der Primärleitung erreicht ist, so wird der Steuerkolben ι gehoben; das Medium gelangt durch den Kanal 3 unter den Steuerkolben 4 und drückt auch diesen nach oben, dadurch den Druckausgleich 5 öffnend und die Leitungen 6 und 7 miteinander verbindend.ίο In the illustration is the subject of the invention for example shown schematically. The space under the control piston ι is with the primary line 2 always in connection. As soon as the desired maximum pressure in the Primary line is reached, the control piston ι is raised; the medium gets through the channel 3 under the control piston 4 and also pushes this upwards, thereby the Opening pressure equalization 5 and connecting lines 6 and 7 to one another.

Das Medium strömt nun durch Leitung 7 in den Raum über dem Kolben 8 und drückt diesen nach unten. Mittels Kolbenstange 9 wird das Ventil oder der Schieber 10 geöffnet, und das Medium kann direkt die Primärleitung durchströmen. Sinkt der Druck in der Primärleitung um einen Bruchteil einer Atmosphäre, so geht der angehobene Steuerkolben ι wieder in seine untere Stellung zurück.The medium now flows through line 7 into the space above piston 8 and presses this down. The valve or slide 10 is opened by means of the piston rod 9, and the medium can flow directly through the primary line. If the pressure in the Primary line by a fraction of an atmosphere, so goes the raised control piston ι back to its lower position.

Diese Bewegung hat aber noch kein Schließen des Ventils oder Schiebers 10 zur Folge, da der Druck unter dem Steuerkolben 4 durch Zuströmen des Mediums durch die Leitung 6 und den Druckausgleichkanal 5 erhalten bleibt.However, this movement does not yet result in the valve or slide 10 closing, since the pressure under the control piston 4 due to the inflow of the medium through the line 6 and the pressure equalization channel 5 is retained.

Erst wenn der Druck auf das gewünschte Minimum gesunken ist, so geht der durch das Gewicht entsprechend belastete Stausrkolben 4 wieder in seine unterste Stellung zurück, schließt den Druckausgleichkanal 5 ab und verbindet die Leitungen 7 und 11 miteinander. Das über dem Kolben 8 befindliche Medium strömt ins Freie aus.Only when the pressure has dropped to the desired minimum does it go through the weight correspondingly loaded storage piston 4 back into its lowest position back, closes the pressure equalization channel 5 and connects the lines 7 and 11 with one another. The medium located above the piston 8 flows out into the open.

Die Feder 12 schließt nun das Ventil oder den Schieber 10, und es kann kein Medium 4S mehr durchströmen.The spring 12 now closes the valve or the slide 10, and no more medium 4S can flow through it.

Der Druckunterschied kann beliebig gewählt werden.The pressure difference can be chosen arbitrarily.

Claims (1)

Patentanspruch: g0 Claim: g0 Überströmventil mit Servomotor, dadurch gekennzeichnet, daß dem in bekannter Weise mit einem Steuerkolben versehenen Steuerglied für den Servomotor ein zweiter Kolben mit höherer Belastung vorgeschaltet ist, der bei Erreichung des gewünschten Maximaldruckes angehoben wird und den Minderdruck hinter den Steuerkolben leitet, der nun so lange angehoben bleibt, bis der Druck hinter dem Ventil seiner Belastung entsprechend abgesunken ist.Overflow valve with servomotor, characterized in that the known Way provided with a control piston control member for the servomotor, a second piston with a higher load is connected upstream, which is increased when the desired maximum pressure is reached and the reduced pressure behind the control piston, which now remains raised until the pressure is released has dropped behind the valve according to its load. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DESCH86450D Overflow valve Expired DE507372C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH86450D DE507372C (en) Overflow valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH86450D DE507372C (en) Overflow valve

Publications (1)

Publication Number Publication Date
DE507372C true DE507372C (en) 1930-09-15

Family

ID=7443472

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH86450D Expired DE507372C (en) Overflow valve

Country Status (1)

Country Link
DE (1) DE507372C (en)

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