DE490104C - Needle valve for steam generator with injection of feed water - Google Patents

Needle valve for steam generator with injection of feed water

Info

Publication number
DE490104C
DE490104C DESCH90383D DESC090383D DE490104C DE 490104 C DE490104 C DE 490104C DE SCH90383 D DESCH90383 D DE SCH90383D DE SC090383 D DESC090383 D DE SC090383D DE 490104 C DE490104 C DE 490104C
Authority
DE
Germany
Prior art keywords
valve
needle valve
injection
feed water
steam generator
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
DESCH90383D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DESCH90383D priority Critical patent/DE490104C/en
Application granted granted Critical
Publication of DE490104C publication Critical patent/DE490104C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B27/00Instantaneous or flash steam boilers
    • F22B27/16Instantaneous or flash steam boilers involving spray nozzles for sprinkling or injecting water particles on to or into hot heat-exchange elements, e.g. into tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)

Description

Nadelventil für Dampferzeuger mit Einspritzung des Speisewassers Die Erfindung betrifft ein Nadelventil für Dampferzeuger mit Einspritzung des Speisewassers. Bei den bisher bekannten Ventilen waren die Rückschlagklappen, die ein Zurücktreten des Dampfes in die Wasserspeiseleitung verhindern sollen, gesondert vor dem Nadelventil angebracht. Erfindungsgemäß wird nun das Rückschlagventil unmittelbar im Gehäuse des Nadelventils angeordnet. Dadurch wird erreicht, daß das Nadelventil gleichzeitig die Sicherheitsvorrichtung bildet.Needle valve for steam generator with injection of feed water Die The invention relates to a needle valve for steam generators with injection of the feed water. In the previously known valves, the check valves were that a step back to prevent the steam in the water feed line, separately in front of the needle valve appropriate. According to the invention, the check valve is now directly in the housing of the needle valve arranged. It is thereby achieved that the needle valve simultaneously forms the safety device.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargpstellt, und zwar zeigt Abb. i einen Längsschnitt durch das Ventil, Abb. z einen Schnitt nach 2-z der Abb. i und Abb. 3 und q. eine Einzelheit in Seitenansicht und Draufsicht.In the drawing, an embodiment of the invention is shown, namely Fig. i shows a longitudinal section through the valve, Fig. z shows a section according to 2-z of Fig. i and Fig. 3 and q. a detail in side view and top view.

a ist das Ventilgehäuse, das mit den Flanschen a1, a2 versehen ist, von denen der Flansch a1 an das Verdampferrohr und der Flansch a2 an die Wasserzuleitung angeschlossen wird. In die kegelige Durchbohrung ag des Flansches a1 ragt der Ventilkegel. b1 * der im Ventilgehäuse schraubbargelagerten Ventilnadelb, die an ihrem freien Ende'mit dem Handrad c ausgerüstet ist. Erfindungsgemäß ist nun in einem solchen bekannten Nadelventil. ein. Rückschlagventilangeordnet. Hierzu ist in die Durchbohrung des Flansches a2 eine Büchse d geschraubt, deren kegelige Stirnfläche dl einem Ventilkörper ;e (Abb. 3 und q.) als Sitz dient. Der Ventilkörper e ist in der Bohrunga4 des Gehäuses frei beweglich und mit drei Führungsleisten e1 versehen. Die Wirkungsweise des Ventils ist folgende: Vor Inbetriebsetzung der Anlage wird das Ventil durch Drehen an dem Handrad c so eingestellt, daß zwischen dem Ventilkegel b1 und dem Sitz a`3 des Nadelventils ein. Zwischenraum bleibt, der bei dem gegebenen Wasserdruck in der Leitung die gewünschte Wassermenge in fein verteiltem Zustand in das Verdampferrohr laßt. Das zweckmäßig vorgewärmte Wasser gelangt durch die Bohrung d in das Ventil. In Abb. i ist das Ventil. dl, e geschlossen dargestellt. Der Ventilkörpere wird beim Betrieb der Anlage durch den von unten her wirkenden Wasserdruck angehoben. Solange nun das durch die Einstellung der Ventilnadel b=edingte Druckverhältnis zwischen Wasser und Dampf bestehen bleibt, also bei normalem Betrieb, bleibt auch das Ventildl, e geöffnet. Sinkt dagegen der Druck in der Wasserleitung, so sucht der Dampf in die Wasserleitung zurückzuschlagen, und er drückt dabei so lange den Ventilkörper e auf seinen Sitz dl, bis das Druckverhältnis wieder hergestellt ist. Das Ventil hat den Vorteil, daß es außer Spritzdüse, Einstell- und Absperrventil gleichzeitig eine Sicherheitsvorrichtung bildet.a is the valve housing, which is provided with the flanges a1, a2, of which the flange a1 to the evaporator pipe and the flange a2 to the water supply line is connected. The valve cone protrudes into the conical through hole ag of the flange a1. b1 * of the valve needle, which is screw-mounted in the valve housing and which is attached to its free Ende'mit the handwheel c is equipped. According to the invention is now in such a well-known needle valve. a. Check valve arranged. This is done in the through hole of the flange a2 screwed a bushing d, the conical end face dl of a valve body ; e (Fig. 3 and q.) serves as a seat. The valve body e is in the bore a4 of the housing freely movable and provided with three guide strips e1. How the valve works is as follows: Before starting up the system, turn the valve on the Handwheel c set so that between valve cone b1 and seat a`3 of the needle valve a. The gap remains that is the desired for the given water pressure in the line Let the amount of water in a finely divided state into the evaporator tube. That functional preheated water enters the valve through hole d. In Fig. I this is Valve. dl, e shown closed. The valve body is in operation of the system raised by the water pressure acting from below. As long as that through the Adjustment of the valve needle b = conditional pressure ratio between water and steam remains in place, i.e. during normal operation, the valve e also remains open. If, on the other hand, the pressure in the water pipe drops, the steam seeks into the water pipe to strike back, and he presses the valve body e onto its seat for so long dl until the pressure ratio is restored. The valve has the advantage that in addition to the spray nozzle, adjusting valve and shut-off valve, there is also a safety device forms.

Claims (1)

PATENTANSPRUCH: Nadelventil für Dampferzeuger mit Einspritzung des Speisewassers, gekennzeichnet durch ein iin Eintrittsstutzen des Nadelventilgehäuses (a) angeordnetes Rückschlagventil (e).PATENT CLAIM: Needle valve for steam generator with injection of the Feed water, characterized by an iin inlet connection of the needle valve housing (a) arranged check valve (e).
DESCH90383D Needle valve for steam generator with injection of feed water Expired DE490104C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH90383D DE490104C (en) Needle valve for steam generator with injection of feed water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH90383D DE490104C (en) Needle valve for steam generator with injection of feed water

Publications (1)

Publication Number Publication Date
DE490104C true DE490104C (en) 1930-01-24

Family

ID=7444378

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH90383D Expired DE490104C (en) Needle valve for steam generator with injection of feed water

Country Status (1)

Country Link
DE (1) DE490104C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3901444A1 (en) * 1988-03-29 1989-10-12 Festo Kg Controllable non-return valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3901444A1 (en) * 1988-03-29 1989-10-12 Festo Kg Controllable non-return valve
DE3901444C2 (en) * 1988-03-29 1998-09-10 Festo Ag & Co Controllable check valve

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