DE3503977A1 - Supplementary device to the precision-metering pressure reduction valve - Google Patents

Supplementary device to the precision-metering pressure reduction valve

Info

Publication number
DE3503977A1
DE3503977A1 DE19853503977 DE3503977A DE3503977A1 DE 3503977 A1 DE3503977 A1 DE 3503977A1 DE 19853503977 DE19853503977 DE 19853503977 DE 3503977 A DE3503977 A DE 3503977A DE 3503977 A1 DE3503977 A1 DE 3503977A1
Authority
DE
Germany
Prior art keywords
valve
pistons
pressure
cylinder
piston
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.)
Withdrawn
Application number
DE19853503977
Other languages
German (de)
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19843440451 external-priority patent/DE3440451A1/en
Application filed by Individual filed Critical Individual
Priority to DE19853503977 priority Critical patent/DE3503977A1/en
Publication of DE3503977A1 publication Critical patent/DE3503977A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/109—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with two or more pistons acting as a single pressure controller that move together over range of motion during normal operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators

Landscapes

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

Abstract

Two pistons located in a cylinder are pushed against the valve stem of a high-pressure valve and open the high-pressure valve. The gas flowing into the cylinder pushes back the pistons. Within the cylinder, the pistons form two chambers. From the chamber between the two pistons, the pressure gas is taken off at reduced pressure. A dynamic pressure is produced in the cylinder chamber between the piston opening the valve and the high-pressure valve, because the piston at its circumference bleeds only a small, throttled amount of gas into the cylinder chamber between the two pistons. As a result, a continuous flow of throttled amounts of gas is produced which can be adjusted to very low levels.

Description

Zusatzeinrichtung zum Feindosier-DruckminderventilAdditional device for the fine metering pressure reducing valve

In der Hauptanmeldung P 34 40 451.1 ist ein Feindosier-Druckminderventil beschrieben, das zur Öffnung des Hochdruckventiles und zur Steuerung der Höhe des zu entnehmenden Druckes 2 Kolben aufweist.In the main application P 34 40 451.1 there is a fine metering pressure reducing valve described, which is used to open the high pressure valve and to control the height of the to be taken pressure has 2 pistons.

Der Ventilkolben 5 öffnet das Hochdruckventil 4.The valve piston 5 opens the high pressure valve 4.

Der Hochdruck strömt zunächst in die Stau-Zylinderkammer 14 und drückt den Ventilkolben 5 reaktionsschnell zurück, so daß sich das Hochdruck-Ventil 4 sofort wieder schließt.The high pressure first flows into the storage cylinder chamber 14 and pushes the valve piston 5 back reacting quickly, so that the high pressure valve 4 is immediately closes again.

Dieses geschieht deshalb, weil der Hochdruck nicht ungehindert in die Ablauf-Zylinderkammer 15 überströmen kann. Der Hochdruck muß zunächst die als Drossel ausgebildete Überström-Bohrung 11 passieren.This happens because the high pressure is not unhindered in the drain cylinder chamber 15 can overflow. The high pressure must first be as Pass through the overflow bore 11 formed by a throttle.

Aus diesem Grunde fließt der Hochdruck aus der Stau-Zylinderkammer 14 nur langsam ab.For this reason, the high pressure flows out of the storage cylinder chamber 14 slows down.

Darum baut sich in der Ablauf-Zylinderkammer 15 der Druck nur langsam auf. Es wird vermieden, daß ein hoher Druckschwall beim Öffnen des Hochdruck-Ventiles 4 in den Niederdruck-Ausgang 3 gelangt.That is why the pressure builds up only slowly in the outlet cylinder chamber 15 on. It is avoided that a high surge of pressure when opening the high pressure valve 4 enters the low pressure outlet 3.

Vielmehr tritt ein kontinuierliches Überströmen infolge der Drosselwirkung der Überström-Bohrung 11 oder 18 ein. Durch diesen allmählichen Abbau kann ein konstanter und gleichmäßiger Fluß des Druckgases in kleinsten Entnahmemengen gesteuert werden.Rather, there is a continuous overflow as a result of the throttling effect the overflow bore 11 or 18 a. This gradual breakdown can result in a constant and uniform flow of the compressed gas can be controlled in the smallest of withdrawals.

Die Zusatz-Erfindung hat es sich zur Aufgabe gemacht, eine weitere Möglichkeit zur preiswerten Herstellung eines Feindosier-Druckminderventils zu erschließen.The additional invention has set itself the task of creating a further Possibility to tap into the inexpensive manufacture of a fine metering pressure reducing valve.

Bei besonders hochgespannten Gasen wie Stickstoff mit z.B. 180 bar ist es schwierig und teuer, die Überström-Bohrung 11 in der gewünschten Feinheit herzustellen. Die Zusatz-Erfindung bietet einen Weg zur preiswerten Herstellung.With particularly high-tension gases such as nitrogen with e.g. 180 bar it is difficult and expensive, the overflow hole 11 in the desired fineness to manufacture. The additional invention offers a way of inexpensive manufacture.

Dieses geschieht auf einfachste Weise. Der Ventilkolben 5 erhält in diesem Falle weder Überström-Bohrung 18 noch Überström-Bohrung 11. Statt dessen wird der Sitz des O-Ringes 6 so bemaßt, daß ein drosselndes Überströmen zwischen O-Ring 6 und der Innenwand des Zylinders 1 möglich ist.This is done in the simplest possible way. The valve piston 5 receives in in this case neither overflow bore 18 nor overflow bore 11. Instead the seat of the O-ring 6 is dimensioned so that a throttling overflow between O-ring 6 and the inner wall of the cylinder 1 is possible.

Eine weitere Ausführungsform dieser Zusatz-Erfindung verzichtet auf den O-Ring 6 und läßt den Kolben ohne Abdichtung, Jedoch nur mit einem feinsten Öffnungsspalt zwischen Kolben-Außendurchmesser und Innenwand-Durchmesser des Zylinders 1 spielen, so daß auch hier ein drosselnder Durchgang gegeben ist.Another embodiment of this additional invention is dispensed with the O-ring 6 and leaves the piston without a seal, but only with a very fine Opening gap between the piston outer diameter and the inner wall diameter of the cylinder 1 so that there is also a throttling passage here.

Da bei dieser Ausführung die Überström-Bohrungen 18 und 11 entfallen, können Steuerkolben 8 und Ventilkolben 5 auch starr miteinander verbunden werden.Since the overflow holes 18 and 11 are omitted in this design, control piston 8 and valve piston 5 can also be rigidly connected to one another.

Claims (2)

Patentansprüche 1.) Feindosier-Druckminderventil mit einer Staudruck-Zylinderkammer und einer zwischen zwei Kolben angeordneten Ablauf-Zylinderkammer dadurch gekennzeichnet, daß der geschlossen gebaute Ventilkolben 5 mit einem bestimmten Untermaß gegen die Bohrung des Zylinder 1 nicht voll abdichtend angeordnet ist.Claims 1.) Fine metering pressure reducing valve with a dynamic pressure cylinder chamber and a drain cylinder chamber arranged between two pistons, characterized in that that the closed valve piston 5 with a certain undersize against the Bore of the cylinder 1 is not arranged fully sealing. 2.) Feindosier-Druckminderventil nach Anspruch 1 dadurch gekennzeichnet, daß zwischen Steuerkolben 8 und Ventilkolben 5 eine starre Verbindung angeordnet ist.2.) Fine metering pressure reducing valve according to claim 1, characterized in that that between the control piston 8 and valve piston 5, a rigid connection is arranged is.
DE19853503977 1984-11-06 1985-02-06 Supplementary device to the precision-metering pressure reduction valve Withdrawn DE3503977A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853503977 DE3503977A1 (en) 1984-11-06 1985-02-06 Supplementary device to the precision-metering pressure reduction valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843440451 DE3440451A1 (en) 1984-11-06 1984-11-06 Fine-metering pressure-reducing valve
DE19853503977 DE3503977A1 (en) 1984-11-06 1985-02-06 Supplementary device to the precision-metering pressure reduction valve

Publications (1)

Publication Number Publication Date
DE3503977A1 true DE3503977A1 (en) 1986-08-07

Family

ID=25826267

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853503977 Withdrawn DE3503977A1 (en) 1984-11-06 1985-02-06 Supplementary device to the precision-metering pressure reduction valve

Country Status (1)

Country Link
DE (1) DE3503977A1 (en)

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