DE920885C - Method for preventing the pressure reducers of high-pressure gases from freezing and apparatus therefor - Google Patents
Method for preventing the pressure reducers of high-pressure gases from freezing and apparatus thereforInfo
- Publication number
- DE920885C DE920885C DEJ6487A DEJ0006487A DE920885C DE 920885 C DE920885 C DE 920885C DE J6487 A DEJ6487 A DE J6487A DE J0006487 A DEJ0006487 A DE J0006487A DE 920885 C DE920885 C DE 920885C
- Authority
- DE
- Germany
- Prior art keywords
- gases
- pressure
- freezing
- moisture
- preventing
- 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
Links
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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Description
Verfahren zum Verhindern des Einfrierens von Druckminderern hochgespannter Gase und Vorrichtung dazu Die in Behältern hochgespannten technischen Gase, z. B. Sauerstoff, werden beim Verbraucher auf den Arbeitsdruck entspannt. Diese Gase sind meist mit Wasserdampf gesättigt, und in den Behältern sammelt sich auch freies Wasser an, das bei plötzlichem Entspannen der Gase im Gasstrom mitgerissen wird.Method of preventing freezing of high voltage pressure reducers Gases and devices for this purpose The technical gases in high tension containers, e.g. B. Oxygen, are relaxed at the consumer to the working pressure. These gases are mostly saturated with water vapor, and free water also collects in the containers that is entrained in the gas flow when the gases suddenly relax.
Beim Entspannen der Gase auf den Arbeitsdruck, das in einer oder mehreren Entspannungsstufen erfolgen kann, tritt nach den bekannten Versuchen von T h o m s o n und J o u 1 e infolge der Volumenvergrößerung der Gase und des mit der Volumenvergrößerung notwendigen Verbrauches von latenter Wärme zur Überwindung der inneren Kräfte eine Gasabkühlung ein. In Abhängigkeit von dem Druckgefälle und der Außentemperatur wird die Entspannungsabkühlung so groß, daß sowohl die Gasefeuchtigkeit als auch die mitgerissenen Wassertröpfchen zu Eiskristallen gefrieren und die Druckregelorgane damit .so verstopft werden, daß sie nicht mehr arbeiten können.When releasing the gases to the working pressure, which in one or more Relaxation stages can occur, occurs according to the known experiments by T h o m s o n and J o u 1 e as a result of the increase in volume of the gases and that with the increase in volume necessary consumption of latent heat to overcome internal forces Gas cooling on. Depending on the pressure gradient and the outside temperature the relaxation cooling so great that both the gas moisture and the entrained water droplets freeze to ice crystals and the pressure regulating organs so that they become so clogged that they can no longer work.
Diese Erscheinungen sind bekannt, und es werden zu ihrer Vermeidung verschiedene Vorbeugungsmaßnahmen angewandt. Das hochgespannte Gas wird z. B. beim Durchströmen eines vorgeschalteten Behälters mit Hilfe elektrischer oder anderer Energien der Abkühlung entsprechend vorgeheizt, oder die Druckminderer werden mit Hilfe von aufgelegten Tüchern und Heißwasserbenetzung erwärmt. Diese Behandlung ist umständlich und meist nicht wirksam genug. Es ist auch bekannt, das Gas in mehreren Stufen zu entspannen und zwischen den Stufen durch das umgebende Medium wieder zu erwärmen. Weiter entspricht es dem Stand der Technik, in vorgeschalteten Behältern, die mit festem Chlorkalzium, Ätznatron oder Ätzkali gefüllt sind, dem durchströmenden Gas chemisch die Feuchtigkeit zu entziehen. Dieses Verfahren besitzt die Nachteile, daß die Chemikalien oft erneuert werden müssen und ihr Mitreißen, staubförmig oder als Lauge, unvermeidlich ist, was die sichere Funktion der Regelorgane stört.These phenomena are known and we will avoid them various preventive measures applied. The high tension gas is z. B. at Flow through an upstream container with the help of electrical or other Energies of the cooling preheated accordingly, or the pressure reducers are with Warmed up with the help of applied cloths and hot water wetting. This treatment is awkward and mostly not effective enough. It is also known to relax the gas in several stages and between stages by the surrounding To heat medium again. It also corresponds to the state of the art in upstream Containers filled with solid calcium chloride, caustic soda or caustic potash, the to chemically remove the moisture from the gas flowing through it. This procedure possesses the disadvantages that the chemicals often have to be renewed and their entrainment, dusty or as a lye, is inevitable, which is the safe function of the control organs disturbs.
Alle diese Nachteile werden durch die Erfindung beseitigt, gemäß der die beim Entspannen der Gase auftretende Entspannungskälte nach T h o m s o n -J o u 1 e zum Ausfrieren der Feuchtigkeit auf das zuströmende Gas übertragen wird und die aus der Feuchtigkeit ausgefrorenen Eiskristalle oder der sich bildende Schnee mit bekannten Mitteln, z. B. Siebe, Prallbleche usw., abgeschieden werden, damit sie die Funktion der Regelorgane nicht mehr stören können.All these disadvantages are eliminated by the invention, according to FIG the relaxation cold that occurs when the gases are relaxed according to T h o m s o n -J o u 1 e is transferred to the inflowing gas to freeze out the moisture and the ice crystals frozen out of the moisture or the snow that forms by known means, e.g. B. screens, baffles, etc., are deposited so that they can no longer disrupt the functioning of the regulating organs.
Das Übertragen der Kälte kann z. B. mit Rohrschlangen oder Haarkanälen erfolgen, die in wärmeleitender Verbindung mit dem Entspannungsbehälter stehen. Wird der Entspannungsraum durch Wärmeisolation gegen das Eindringen der Wärme von außen geschützt, so wird :das expandierte Gas gezwungen, seine Verdampfunggswärme den Wänden oder Einbauten des Entspannungsraumes zu entziehen, was infolge der Verbindung mit den Vorkühleinrichtungen ein starkes Sinken der Abkühltemperatur zur Folge hat. Hierdurch werden die Kühlwirkung und die Ausscheidung der Feuchtigkeit sehr begünstigt.The transfer of the cold can e.g. B. with pipe coils or hair channels take place, which are in thermally conductive connection with the expansion tank. Is the relaxation room by thermal insulation against the penetration of heat from protected from the outside, then: the expanded gas is forced to use its heat of vaporization to withdraw from the walls or fixtures of the relaxation room, which is due to the connection with the pre-cooling devices results in a sharp drop in the cooling temperature. This greatly enhances the cooling effect and the elimination of moisture.
Die bestehenden Konstruktionen der Druckminderer bleiben möglichst unverändert, und den Hauptentspannungsstufen, das sind solche mit möglichst hoher Abkühlung, werden vorhandene oder vergrößerte Entspannungsräume mit Abscheidungseinrichtungen für die ausgefrorene Feuchtigkeit angeschlossen. Daß diese Abscheideeinrichtungen entleert oder ausgeblasen werden können, ist selbstverständlich.The existing constructions of the pressure reducers remain as possible unchanged, and the main relaxation levels are those with the highest possible level Cooling, existing or enlarged relaxation rooms with separation devices connected for the frozen moisture. That these separators It goes without saying that they can be emptied or blown out.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ6487A DE920885C (en) | 1952-10-23 | 1952-10-23 | Method for preventing the pressure reducers of high-pressure gases from freezing and apparatus therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ6487A DE920885C (en) | 1952-10-23 | 1952-10-23 | Method for preventing the pressure reducers of high-pressure gases from freezing and apparatus therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE920885C true DE920885C (en) | 1954-12-02 |
Family
ID=7198499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ6487A Expired DE920885C (en) | 1952-10-23 | 1952-10-23 | Method for preventing the pressure reducers of high-pressure gases from freezing and apparatus therefor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE920885C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1127824B (en) * | 1956-12-03 | 1962-04-12 | Rudolf Buse | Arrangement for reducing the pressure of carbonic acid-liquid gas for the impregnation of liquids, especially beverages |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT79465B (en) * | 1916-07-03 | 1919-12-29 | Deutsch Luxemburgische Bergwer | Heat and freeze protection device for gases flowing out of pressurized gas cylinders. |
DE367005C (en) * | 1923-01-15 | Alexander Bernhard Draeger Dr | Device to prevent gas pressure reducing valves from freezing | |
DE457025C (en) * | 1926-10-24 | 1928-03-07 | Franz Schwarz | Prevention of welding or cutting equipment operated with ethylene from freezing at low outside temperatures |
FR730440A (en) * | 1932-01-25 | 1932-08-12 | Device to prevent freezing of reducing valves of oxygen cylinders | |
GB450985A (en) * | 1935-02-23 | 1936-07-28 | Frank Symonds | Improvements in or relating to devices for heating liquids, and heating, and detecting, the rate of flow of gas |
DE857724C (en) * | 1950-12-28 | 1952-12-01 | Draegerwerk Ag | Pressure reducing valve |
-
1952
- 1952-10-23 DE DEJ6487A patent/DE920885C/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE367005C (en) * | 1923-01-15 | Alexander Bernhard Draeger Dr | Device to prevent gas pressure reducing valves from freezing | |
AT79465B (en) * | 1916-07-03 | 1919-12-29 | Deutsch Luxemburgische Bergwer | Heat and freeze protection device for gases flowing out of pressurized gas cylinders. |
DE457025C (en) * | 1926-10-24 | 1928-03-07 | Franz Schwarz | Prevention of welding or cutting equipment operated with ethylene from freezing at low outside temperatures |
FR730440A (en) * | 1932-01-25 | 1932-08-12 | Device to prevent freezing of reducing valves of oxygen cylinders | |
GB450985A (en) * | 1935-02-23 | 1936-07-28 | Frank Symonds | Improvements in or relating to devices for heating liquids, and heating, and detecting, the rate of flow of gas |
DE857724C (en) * | 1950-12-28 | 1952-12-01 | Draegerwerk Ag | Pressure reducing valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1127824B (en) * | 1956-12-03 | 1962-04-12 | Rudolf Buse | Arrangement for reducing the pressure of carbonic acid-liquid gas for the impregnation of liquids, especially beverages |
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