DE134750C - - Google Patents
Info
- Publication number
- DE134750C DE134750C DENDAT134750D DE134750DA DE134750C DE 134750 C DE134750 C DE 134750C DE NDAT134750 D DENDAT134750 D DE NDAT134750D DE 134750D A DE134750D A DE 134750DA DE 134750 C DE134750 C DE 134750C
- Authority
- DE
- Germany
- Prior art keywords
- steam
- exhaust steam
- spring
- piston
- tension
- 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
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B25/00—Regulating, controlling, or safety means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B2250/00—Accessories of steam engines; Arrangements or control devices of piston pumps, compressors without crank shafts or condensors for so far as they influence the functioning of the engines
- F01B2250/002—Valves, brakes, control or safety devices for steam engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
sr-,*sr -, *
Will man bei Dampfmaschinen den Abdampf in eine Heizung leiten, so mufs in diese Leitung ein Sicherheitsventil eingeschaltet werden, damit der Dampfdruck in der Heizung und somit der für die Maschine schädliche Gegendruck gewisse Grenzen nicht übersteigt. Die hierzu bisher verwendeten Sicherheitsventile, welche mit Feder oder Gewichten belastet auf ihren Sitz gedrückt wurden, nutzen sich durch die von der Dampfmaschine bedingten Druckschwankungen (Stöfse) sehr bald ab, namentlich wenn ein gröfseres Expansionsgefäfs für den Abdampf fehlt. Diesen Uebelstand zu beseitigen, gab die Veranlassung zu der in der beiliegenden Zeichnung dargestellten Sicherheitsvorrichtung. If you want to lead the exhaust steam into a heater in steam engines, it must be in this line a safety valve can be switched on so that the steam pressure in the heater and thus the counter pressure, which is harmful to the machine, does not exceed certain limits. the for this purpose previously used safety valves, which are loaded with springs or weights their seat are used due to the pressure fluctuations caused by the steam engine (Exhaust) very soon, especially if a larger expansion vessel is missing for the exhaust steam. To remedy this evil, prompted the safety device shown in the accompanying drawing.
Der durch die Durchgangsöffnung a b tretende Dampf kann auf den rechtwinklig hierzu geführten Doppelkolben direct nicht einwirken, sondern nur durch die kleine Oeffnung c langsam unter den unteren Kolben gelangen. Da nun der Doppelkolben durch, eine schwache Feder nach oben gehalten und durch eine mittelst Stellschraube einstellbare stärkere Feder nach unten gedrückt, aber in der Schwebe gehalten wird, so kann der unter dem Kolben wirkende Dampfdruck, falls er eine zu hohe Spannung erreicht, denselben so hoch heben, bis der Abdampf durch die ringförmige Oeffnung ins Freie entweicht.The passing through the through hole from steam can on the right angles thereto run double piston not directly act, but only by the small opening c slowly under the lower piston reach. Since the double piston is now held up by a weak spring and pressed down by a stronger spring adjustable by means of an adjusting screw, but kept in suspension, the steam pressure acting under the piston, if it reaches too high a tension, can do the same lift up until the exhaust steam escapes through the ring-shaped opening into the open air.
Da der Dampfdruck durch die kleine Oeffnung c nur allmählich auf den Kolben wirken" und der durch den Abdampf gut geschmierte Kolben schwebend gehalten wird, also nirgend anschlagen kann, so wird bei unbegrenzter Haltbarkeit der Vorrichtung der Dampfdruck auf dem eingestellten Durchschnittsdruck bleiben.Since the steam pressure only gradually acts on the piston through the small opening c and the piston, which is well lubricated by the exhaust steam, is kept floating, i.e. cannot strike anywhere, the steam pressure will remain at the set average pressure if the device has an unlimited shelf life.
Schraubt man die obere Stellschraube ganz hoch, so wird der Doppelkolben durch die untere schwache Feder hoch gehalten und der Abdampf der Maschine kann ohne jede Drosselung durch die Ringöffnung ins Freie entweichen. If you screw the upper adjusting screw all the way up, the double piston is pushed by the lower weak spring held high and the exhaust steam of the machine can without any throttling escape through the ring opening into the open air.
Zur Abstellung der Heizung kann in demselben Gehäuse an der Dampfaustrittsstelle noch eine Drosselklappe angebracht werden.To turn off the heating can be in the same housing at the steam outlet a throttle valve can also be attached.
Claims (1)
Ausführungsform der Sicherheitsvorrichtung nach Anspruch i, dadurch gekennzeichnet, dafs die stärkere Feder mittels einer Druckschraube eingestellt wird, bei deren vollständiger Lösung der Kolben durch die schwache Feder ganz hoch gehoben wird, so dafs der Abdampf frei entweicht, wobei gleichzeitig durch eine Drosselklappe die Heizung ganz abgestellt werden kann.raises the fact that the upper of the same releases an annular opening through which the exhaust steam can escape into the open.
Embodiment of the safety device according to claim i, characterized in that the stronger spring is adjusted by means of a pressure screw, when the latter is completely released the piston is lifted very high by the weak spring, so that the exhaust steam escapes freely, while at the same time the heating is completely through a throttle valve can be turned off.
Publications (1)
Publication Number | Publication Date |
---|---|
DE134750C true DE134750C (en) |
Family
ID=402846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT134750D Active DE134750C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE134750C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1087422B (en) * | 1955-01-28 | 1960-08-18 | Keelavite Co Ltd | Overpressure protection acting in both directions |
-
0
- DE DENDAT134750D patent/DE134750C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1087422B (en) * | 1955-01-28 | 1960-08-18 | Keelavite Co Ltd | Overpressure protection acting in both directions |
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