DE27688C - Expansion apparatus for steam engines - Google Patents
Expansion apparatus for steam enginesInfo
- Publication number
- DE27688C DE27688C DENDAT27688D DE27688DA DE27688C DE 27688 C DE27688 C DE 27688C DE NDAT27688 D DENDAT27688 D DE NDAT27688D DE 27688D A DE27688D A DE 27688DA DE 27688 C DE27688 C DE 27688C
- Authority
- DE
- Germany
- Prior art keywords
- expansion apparatus
- steam engines
- steam
- pawls
- nut
- 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
- 230000003993 interaction Effects 0.000 claims 1
- 230000001404 mediated Effects 0.000 claims 1
- 210000003284 Horns Anatomy 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L15/00—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00
- F01L15/02—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves
- F01L15/04—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves main valve being combined with auxiliary valve
- F01L15/06—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves main valve being combined with auxiliary valve of Meyer or Rider type, i.e. in which the expansion is varied at the expansion valve itself
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 14: Dampfmaschinen.CLASS 14: Steam Engines.
Der auf der Zeichnung dargestellte Expansionsapparat gehört zu den selbstständigen Mechanismen, welche in der Weise mit einer Dampfmaschine von im allgemeinen beliebigem System combinirt werden, dafs der Dampf vor seinem Zutritt zum Dampfcylinder den Mechanismus zu durchströmen hat und dabei sein Durchflufs eine Regulirung nach Mafsgabe des für den jeweilig zu überwindenden Widerstand erforderlichen Kraftaufwandes erfährt.The expansion apparatus shown in the drawing is one of the independent mechanisms which in the manner of a steam engine of generally any system be combined so that the steam closes the mechanism before it enters the steam cylinder has flowed through and thereby its flow a regulation according to the measure for the respective Experience the effort required to be overcome resistance.
Zu diesem Zwecke ist hier ein im Gehäuse C befindlicher Drehschieber von bekannter Einrichtung, welcher auf der Stange ί festsitzt, in eigenthümlicher Weise hinsichtlich seiner Bewegung vom jeweiligen Regulatorstande abhängig gemacht. Am oberen Ende trägt die Drehschieberspindel ί eine mit ihr fest verbundene steilgängige Schraube o. Die dieser zugehörige Schraubenmutter p wird, wie der Querschnitt nach a ■ b zeigt, mittelst prismatischer Leisten so geführt, dafs sie sich in Richtung der Drehschieberspindelachse auf- und abbewegen kann, aber an einer Drehung verhindert ist.For this purpose, a rotary slide valve located in the housing C of a known device, which is stuck on the rod ί, is made dependent in a peculiar way with regard to its movement on the respective regulator status. At the upper end of the rotary slide valve spindle on which this associated nut is p carries ί a firmly connected to its steep-threaded screw o., As the cross section according to a ■ b shows, by means of prismatic strips out so, that they are in the direction of the rotary slide valve spindle axis up and down can but is prevented from rotating.
Auf dem Querhaupt einer eine schwingende Bewegung vollführenden Welle w greifen zwei Klinken k an, welche von Federn in Andruck gegen die Mutter β erhalten werden. Diese Klinken treten abwechselnd unter vorstehende Nasen der Mutter und heben letztere so weit in die Höhe, bis das Horn, in welches jede Klinke oben ausläuft, mit einem Rande r des nach unten verlängerten Regulatormuffes zusammentrifft, was alsdann das Ausrücken der Klinke und das Niedergehen der Mutter p zur Folge hat. Während dieser geradlinigen Bewegungen der Mutter dreht sich die ihr zugehörige, am Mitaufsteigen verhinderte Schraube ο und nimmt hierbei den Drehschieber mit, welcher infolge dessen Dampfzuströmung herbeiführt, um dieselbe nach erfolgtem Anstofsen' der Klinke k an den Rand r wieder abzuschneiden. Damit die Rückdrehung des Schiebers mit der wünschenswerthen Schnelligkeit ausgeführt werde, befindet sich im Gehäuse q eine die Spindel ί im geeigneten Sinne beeinflussende Spiralfeder. Das Abschneiden des Dampfes und damit der Eintritt der Expansionsperiode im Dampfcylinder erfolgt hiernach um so früher, je geringer die von der Maschine verlangte Arbeitsleistung, dagegen um so später, je gröfser diese ist. Im ersteren Falle steht der Rand r tiefer, im letzteren höher.On the crosshead of a shaft w performing an oscillating movement, two pawls k engage, which are obtained by springs pressing against the nut β . These latches appear alternately under projecting lugs of the nut and lift the latter so far in the height to the horn, in which each pawl runs above, with an edge r of the combined scores from extended down regulator Muffes, which then disengagement of the pawl and the descent of the Mother p entails . During this rectilinear movement of the nut rotates the ο their associated prevented at Mitaufsteigen screw and thereby decreases with the rotary slide valve, which brings about consequently steam inlet to the same after completion Anstofsen 'of the pawl k r to the edge again cut off. To ensure that the slide can be rotated back with the desired speed, there is a spiral spring in the housing q which influences the spindle ί in a suitable manner. The cutting off of the steam, and with it the beginning of the expansion period in the steam cylinder, takes place earlier, the lower the work required by the machine, on the other hand, the later, the greater it is. In the former case the margin r is lower, in the latter it is higher.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE27688C true DE27688C (en) |
Family
ID=303986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT27688D Active DE27688C (en) | Expansion apparatus for steam engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE27688C (en) |
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0
- DE DENDAT27688D patent/DE27688C/en active Active
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