DE144780C - - Google Patents
Info
- Publication number
- DE144780C DE144780C DENDAT144780D DE144780DA DE144780C DE 144780 C DE144780 C DE 144780C DE NDAT144780 D DENDAT144780 D DE NDAT144780D DE 144780D A DE144780D A DE 144780DA DE 144780 C DE144780 C DE 144780C
- Authority
- DE
- Germany
- Prior art keywords
- float
- pipe
- steam
- liquid
- mercury
- 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
- 239000003638 reducing agent Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims 1
- 238000010790 dilution Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- G05D16/12—Control of fluid pressure without auxiliary power the sensing element being a float
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Der auf der Zeichnung im senkrechten Schnitt dargestellte Gegenstand vorliegender Erfindung gehört zu jener Gattung von Druckminderern, bei welchen ein entlastetes Doppel sitzventil V V1 von einem Schwimmer S eingestellt wird und welche zwecks Veränderung des verminderten Druckes mit einem verstellbaren Überlaufgefäß U für die Sperrflüssigkeit F versehen sind. Bei den bisher ausge- führten Druckminderern dieser Art sieht die Oberfläche der den Schwimmer beeinflussenden Flüssigkeit mit dem durchströmenden Dampf in Berührung, so daß dieselbe bei entsprechend hoher Temperatur des Dampfes selbst mit ver-The subject of the present invention shown in the drawing in vertical section belongs to that type of pressure reducer in which a relieved double seat valve VV 1 is set by a float S and which are provided with an adjustable overflow vessel U for the sealing liquid F to change the reduced pressure . In the previously implemented pressure reducers of this type, the surface of the liquid influencing the float is in contact with the steam flowing through it, so that, at a correspondingly high temperature of the steam, the same is
dampfen kann. Dieser Übelstand macht sich namentlich dann bemerkbar, wenn als Absperrflüssigkeit Quecksilber verwendet wird und auf dieses überhitzter Dampf einwirkt.can steam. This inconvenience is particularly noticeable when used as a shut-off fluid Mercury is used and superheated steam acts on it.
Andererseits kann auch die Flüssigkeit, fallsOn the other hand, the liquid can also, if
ao nach Abstellung des Dampfes im Hohlraum G des Druckminderers bezw. in der Minderdruckdampfleitung eine Luftverdünnung oder gar Luftleere eintritt, und kein besonderes Belüftungsventil am Druckminderer oder an der Minderdruckleitung vorgesehen ist, durch die entstehende Saugwirkung in die Leitung übertreten. ao after shutdown of the steam in cavity G of the pressure reducer BEZW. in the low pressure steam line an air dilution or even evacuation occurs, and no special ventilation valve is provided on the pressure reducer or on the low pressure line, through the resulting suction effect into the line.
Diesen beiden Übelständen soll durch den Gegenstand vorliegender Erfindung abgeholfen werden.The subject matter of the present invention is intended to remedy these two deficiencies will.
Zu diesem Zweck ist zwischen dem Gehäuse G und dem Schwimmergefäß Q ein Rohr R von genügender Länge, die mindestens 76 cm beträgt, eingeschaltet, welches sich mit Niederschlagwasser füllt, so daß zwischen der Oberfläche des Quecksilbers im Schwimmergefäß Q. und dem Dampf im Raum G eine Wassersäule gebildet wird. Die von dieser verdunstende Wassermenge wird durch das beim Durchströmen des Dampfes sich fortwährend neu bildende Niederschlagwasser wieder ersetzt. Derartige Einrichtungen sind bei anderen Druckminderern bekannt. Damit nun die durch Luftkühlung bewirkte Bildung von Niederschlagwasser in genügender Weise eintritt, wird gemäß vorliegender Erfindung das Rohr R durch eine Kühlflüssigkeit oder ein anderes Kühlmittel, z.B. Druckluft, gekühlt, welche durch einen vom Rohre R und einen um dieses gelegten Mantel M gebildeten Hohlraum strömt.For this purpose, a pipe R of sufficient length, which is at least 76 cm, is inserted between the housing G and the float vessel Q, which fills with rainwater so that between the surface of the mercury in the float vessel Q. and the steam in space G. a water column is formed. The amount of water evaporating from this is replaced by the rainwater that is continually forming as the steam flows through it. Such devices are known from other pressure reducers. So that the formation of rainwater caused by air cooling occurs sufficiently, according to the present invention the pipe R is cooled by a cooling liquid or another coolant, e.g. compressed air, which flows through a cavity formed by the pipe R and a jacket M placed around it .
Das Quecksilber steigt, jeder Luftverdünnung entsprechend, in dem Rohr R in die Höhe, kann aber bei entsprechender Länge des Rohres R niemals infolge von Luftverdünnung in den Raum G hinaufgesaugt werden, weil die Höhe von R mindestens 76 cm beträgt.The mercury rises in the pipe R , depending on the dilution of air, but with a corresponding length of the pipe R it can never be sucked up into room G as a result of air dilution, because the height of R is at least 76 cm.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE144780C true DE144780C (en) |
Family
ID=412168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT144780D Active DE144780C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE144780C (en) |
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0
- DE DENDAT144780D patent/DE144780C/de active Active
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