DE905019C - Steam converting valve for hot steam cooling - Google Patents

Steam converting valve for hot steam cooling

Info

Publication number
DE905019C
DE905019C DES26258A DES0026258A DE905019C DE 905019 C DE905019 C DE 905019C DE S26258 A DES26258 A DE S26258A DE S0026258 A DES0026258 A DE S0026258A DE 905019 C DE905019 C DE 905019C
Authority
DE
Germany
Prior art keywords
steam
valve
cooling
behind
converting valve
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
DES26258A
Other languages
German (de)
Inventor
Dr-Ing Werner Pontow
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES26258A priority Critical patent/DE905019C/en
Application granted granted Critical
Publication of DE905019C publication Critical patent/DE905019C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22GSUPERHEATING OF STEAM
    • F22G5/00Controlling superheat temperature
    • F22G5/12Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)

Description

Gegenstand des Patents 869 o76 ist eine neuartige Einrichtung zur Heißdampfkühlung durch Wassereinspritzung in Anlagen, in denen zier zu kühlende Dampf vor seiner weiteren Verwendung gedrosselt wird. Die Heißdampfkühlung wird bei der Anordnung nach dem Hauptpatent nicht in einen besonderen Heißdampfkühler, sondern in das Druckminderventil selbst verlegt, in der Weise, daß das Kühlwasser dem Ventil zugeführt wird und sich innerhalb der Ventilzone, wo eine sehr hohe Strömungsgeschwindigkeit herrscht, im zu kühlenden Dampf fein verteilt. Das Kühlwasser wird dabei vor dem Ventilsitz oder in -der Zone zwischen Ventilsitz und Drosselstrecke oder auch kurz hinter dieser eingeführt. Versuche haben gezeigt, daß mit der neuen Anordnung der gesamte Bereich von o bis iooo/o der Dampfmenge mit Sicherheit beherrscht werden kann, gleichgültig, ob das Druckgefälle innerhalb :des Ventils überkritisch, kritisch oder unterkritisch ist.The subject of the patent 869 o76 is a novel device for Superheated steam cooling by water injection in systems where ornamental cooling is required Steam is throttled before further use. The superheated steam cooling is in the arrangement according to the main patent not in a special superheated steam cooler, but relocated to the pressure reducing valve itself, in such a way that the cooling water is fed to the valve and located within the valve zone, where a very high flow rate prevails, finely distributed in the steam to be cooled. The cooling water is before the Valve seat or in the zone between the valve seat and the throttle section or also briefly introduced behind this. Tests have shown that with the new arrangement of the entire range from 0 to 100 per cent of the amount of steam can be mastered with certainty can, regardless of whether the pressure gradient within: the valve is supercritical, critical or is subcritical.

Die Erfindung betrifft eine Verbesserung eines derartigen Dampfumformventils, und zwar in der Weise, daß hinter der Mischzone von Dampf und Kühlwasser eine sprunghafte Erweiterung des Strömungskanals vorgesehen ist.The invention relates to an improvement of such a steam conversion valve, in such a way that behind the mixing zone of steam and cooling water there is an erratic Expansion of the flow channel is provided.

Es. war bereits darauf hingewiesen, daß die günstige Wirkung des Dampfumformventils auf der hohen Relativgeschwindigkeit der miteinander zu mischenden Komponenten Dampf und, Wasser in bzw. hinter der Drosselstrecke beruht. Die sprunghafte Erweiterung gemäß der Erfindung bringt eine weitere Verstärkung der Ve.rwirbelungs- und Ausdampfwirkung, denn infolge der plötzlichen Erweiterung des, Strömungsquerschnittes tritt eine Art Entspannungsstoß ein, der gleichbedeutend mit einem Verzögerungsstoß der strömenden Mittel ist. Wird aber ein derart feinverteiltes Gemisch aus Dampf und Wasser gewissermaßen schlagartig verzögert, so tritt eine lebhafte Verwirb; lung ein, denn Dampf und Flüssigkeitströpfchen unterliegen j a den Massengesetzen und reagieren demnach verschieden auf Beschleunigung und Verzögerung. Dieses verschiedene Verhalten unterstützt aber, wie gesagt, den Verwirbelungsvorgang und damit die Verdampfung der Wasserteilchen durch den zu kühlenden Dampf.It. it was already pointed out that the beneficial effect of the steam converting valve on the high relative speed of the components to be mixed with each other steam and, water is based in or behind the throttle section. The sudden expansion according to the invention brings a further increase in the turbulence and evaporation effect, because as a result of the sudden expansion of the flow cross-section occurs a Kind of a surge of relaxation, which is synonymous with a surge of deceleration of the flowing Means is. But it becomes such a finely divided mixture of steam and water, so to speak suddenly delayed, there is a lively vortex; ment, because steam and Liquid droplets are subject to the laws of mass and therefore react differently on acceleration and deceleration. However, this different behavior supports As I said, the swirling process and thus the evaporation of the water particles by the steam to be cooled.

Ein Ausführungsbeispiel der Erfindung ist in der Figur dargestellt.An embodiment of the invention is shown in the figure.

i ist der Ventilkegel -mit dem Sitz 2 und dem Drosselkegel 3. Die Drosselzone ist in diesem Falle durch einen zylindrischen Teil q, des Ventilsitzkörpers begrenzt. Das Kühlwasser wird einem Ringkanal 5 zugeführt und verteilt sich aus diesem durch eine Reihe von Bohrungen 6 auf den Raum ; zwischen dem Ventilsitz :2 und der Drosselzone 4. Gemäß der Erfindung ist nun hinter der Drosselzone q. die zylindrische Wand bei 8 stufenartig abgesetzt, so daß eine sprunghafte Durchmesservergrößerung entsteht, die den bereits beschriebenen Verzögerungsstoß hervorruft.i is the valve cone -with the seat 2 and the throttle cone 3. The In this case, the throttle zone is formed by a cylindrical part q of the valve seat body limited. The cooling water is fed to an annular channel 5 and is distributed out this through a series of holes 6 on the room; between the valve seat: 2 and the throttle zone 4. According to the invention, behind the throttle zone q. the cylindrical wall stepped off at 8, so that a sudden increase in diameter arises, which causes the deceleration shock already described.

Die gleiche Wirkung kann naturgemäß auch dadurch erzielt werden, daß man den Drosselkegel sprungartig .im Durchmesser verringert. Auch ist es möglich, Durchmesservergrößerungen des Ventilsitzkörpers und Durchmesserverkleinerungen des Drosselkegels gemeinsam anzuwenden.The same effect can of course also be achieved in that the throttle cone is suddenly reduced in diameter. It is also possible Increased diameter of the valve seat body and reduced diameter of the To apply throttle cone together.

Claims (1)

PATENTANSPRÜCHE: i. Dampfumformventil zur Heißdampfkühlung nach Patent 8'69 076, dadurch gekennzeichnet, daß hinter der Mischzone von Dampf und Kühlwasser eine sprunghafte Erweiterung (S) des Strömungskanals. vorgesehen ist. z. Ventil nach Anspruch i, dadurch gekennzeichnet, daß die Wandung des Strömungskanals hinter -der Mischzone stufenartig erweitert ist. 3. Ventil nach Anspruch i. dadurch gekennzeichnet, daß der Drosselkegel (3) hinter der :Mischzone abgesetzt ist. Die gleichzeitige Anwendung der Maßnahmen nach den Ansprüchen :2 und 3@PATENT CLAIMS: i. Steam converting valve for superheated steam cooling according to patent 8,69,076 , characterized in that behind the mixing zone of steam and cooling water there is an abrupt widening (S) of the flow channel. is provided. z. Valve according to Claim i, characterized in that the wall of the flow channel is widened in a step-like manner behind the mixing zone. 3. Valve according to claim i. characterized in that the throttle cone (3) is offset behind the: mixing zone. The simultaneous application of the measures according to claims: 2 and 3 @
DES26258A 1951-12-11 1951-12-11 Steam converting valve for hot steam cooling Expired DE905019C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES26258A DE905019C (en) 1951-12-11 1951-12-11 Steam converting valve for hot steam cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES26258A DE905019C (en) 1951-12-11 1951-12-11 Steam converting valve for hot steam cooling

Publications (1)

Publication Number Publication Date
DE905019C true DE905019C (en) 1954-02-25

Family

ID=7478651

Family Applications (1)

Application Number Title Priority Date Filing Date
DES26258A Expired DE905019C (en) 1951-12-11 1951-12-11 Steam converting valve for hot steam cooling

Country Status (1)

Country Link
DE (1) DE905019C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001687B (en) * 1954-03-25 1957-01-31 Askania Werke Ag Pressure reducing control valve
DE1100649B (en) * 1958-07-11 1961-03-02 Schneider Bochumer Maschf A Pressure reducing control valve for hot steam lines
US3127905A (en) * 1960-03-09 1964-04-07 Sulzer Ag Valve seat unit
DE1626213B1 (en) * 1963-04-24 1970-12-17 Arap Armaturen U App Gmbh Pressure reducing control valve for steam

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001687B (en) * 1954-03-25 1957-01-31 Askania Werke Ag Pressure reducing control valve
DE1100649B (en) * 1958-07-11 1961-03-02 Schneider Bochumer Maschf A Pressure reducing control valve for hot steam lines
US3127905A (en) * 1960-03-09 1964-04-07 Sulzer Ag Valve seat unit
DE1626213B1 (en) * 1963-04-24 1970-12-17 Arap Armaturen U App Gmbh Pressure reducing control valve for steam

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