DE148554C - - Google Patents
Info
- Publication number
- DE148554C DE148554C DENDAT148554D DE148554DA DE148554C DE 148554 C DE148554 C DE 148554C DE NDAT148554 D DENDAT148554 D DE NDAT148554D DE 148554D A DE148554D A DE 148554DA DE 148554 C DE148554 C DE 148554C
- Authority
- DE
- Germany
- Prior art keywords
- spring
- housing
- base piece
- diameter
- 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.)
- Active
Links
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Description
TAlSLRLl(J ΗΈ8TAlSLRLl (J ΗΈ8
PATENTAMT.PATENT OFFICE.
M 148554 KLASSE 47g. M 148554 CLASS 47g.
Gegenstand vorliegender Erfindung betrifft eine Neuerung an Rohrbruchventilen mit Veränderung der Empfindlichkeit durch eine Feder, welche innerhalb des Gehäusehalses angeordnet ist.The present invention relates to an innovation in pipe burst valves with modification the sensitivity by a spring which is arranged inside the housing neck.
Diese bekannte Bauart zeigt den Nachteil, daß die Einstellfeder infolge Erwärmung durch den Dampf allmählich ihre Spannkraft verliert, woraus dann unliebsame Betriebs-This known design has the disadvantage that the adjusting spring as a result of heating gradually loses its elasticity due to the steam, which then leads to unpleasant operational
ίο störungen durch Frühschlüsse der Vorrichtung entstehen.ίο malfunctions due to premature closure of the device develop.
Rohrbruchventile, an denen die Einstellfeder auf eine Verlängerung der Ventilspindel geschoben oder (unter Einschaltung von Zwischenhebeln) neben dem Gehäuse angebracht ist, sind solchen Zufällen zwar nicht unterworfen, haben jedoch den anderen Nachteil, daß entweder ihre Bauhöhe oder ihre Baubreite die bei normalen Absperrventilen übliehen Außenmaße wesentlich überschreitet.Pipe rupture valves on which the adjusting spring is on an extension of the valve spindle pushed or attached (with the intervention of intermediate levers) next to the housing are not subject to such coincidences, but have the other disadvantage that either their overall height or their overall width are the same as those of normal shut-off valves Significantly exceeds the external dimensions.
Zum Zweck möglichster Raumersparnis muß man jedenfalls danach streben, die Einstellfeder in möglichste Nähe des Ventiltellers zu bringen, und gelangt auf diesem Wege zu der Federanordnung im Halse des Gehäuses. Im Dampfeintrittsraum des durch ein Bodenstück b abgeschlossenen Ventilgehäuses α befindet sich der scheibenförmige Selbstschlußkörper c, dessen Spindel d sich in zwei Führungen e und f bewegen kann. Die Höhlung des Bodenstückes b nimmt eine Feder g auf; durch Verschrauben- der Mutter h auf dem Gewinde . der Spindel d ist man imstande, den Selbstschlußkörper c mit genau derjenigen Kraft niederzuziehen, welche die Vorrichtung bei mäßiger Dampfgeschwindigkeit noch offen erhält. Bei jeder Überschreitung der zulässigen Geschwindigkeit wird die Anschlußleitung selbsttätig abgesperrt, indem der Dampfstrom den Teller c gegen die Scheidewand des Gehäuses α wirft.In order to save as much space as possible, one must in any case strive to bring the adjusting spring as close as possible to the valve disk, and in this way arrive at the spring arrangement in the neck of the housing. The disc-shaped self-closing body c, the spindle d of which can move in two guides e and f , is located in the steam inlet space of the valve housing α, which is closed off by a base piece b. The cavity of the bottom piece b accommodates a spring g ; by screwing the nut h on the thread. the spindle d one is able to pull down the self-closing body c with exactly that force which the device still keeps open at a moderate steam speed. Whenever the permissible speed is exceeded, the connection line is automatically shut off in that the steam stream throws the plate c against the partition of the housing α.
Der hutförmige Boden b ist nicht, wie bisher üblich, am Befestigungsflansch, sondern nahe seinem oberen Rande durch einen Ring i aus Asbest oder dergl. abgedichtet. Sowohl der Mantel von b, als auch der Hals des Gehäuses α sind mit mehreren Löchern k versehen, desgleichen besitzt die Verschlußkappe f eine Anzahl Luftschlitze /. Dadurch wird (das Schnittbild deutet dies an) im Bodenstück b eine Luftströmung erzeugt, welche die Feder g umspült und kühl ist.The hat-shaped bottom b is not, as has been the case up to now, on the fastening flange, but rather near its upper edge by a ring i made of asbestos or the like. Both the jacket of b and the neck of the housing α are provided with several holes k , and the closure cap f also has a number of air slots /. As a result (the sectional view indicates this) an air flow is generated in the base piece b , which flows around the spring g and is cool.
Zum Schutz gegen Wärmestrahlung vom Innern des Gehäuses her ist über die Feder eine besondere Platte m gelegt, deren Durch-messer nur wenig kleiner als das Lichtmaß des Bodenstückes b ist.To protect against thermal radiation from the inside of the housing, a special plate m is placed over the spring, the diameter of which is only slightly smaller than the clear dimension of the base piece b .
Die Anordnung der Oberfläche von b, welche sich der bauchigen Form des Gehäuses α möglichst anpaßt, liefert ganz von selbst eine günstige Führung des Dampfes und vermeidet den an sehr vielen Ventilen vorhandenen Wassersack, welcher eine häufige Ursache unangenehmer Geräusche im Betriebe bildet.The arrangement of the surface of b, which adapts to the bulbous shape of the housing α as much as possible, automatically provides a favorable guidance of the steam and avoids the water pocket present on many valves, which is a frequent cause of unpleasant noises in operation.
Claims (1)
Empfindlichkeit durchPipe rupture valve with
Sensitivity through
Publications (1)
Publication Number | Publication Date |
---|---|
DE148554C true DE148554C (en) |
Family
ID=415636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT148554D Active DE148554C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE148554C (en) |
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0
- DE DENDAT148554D patent/DE148554C/de active Active
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