DE102004036318A1 - Reserve circuit for liquid gas-powered vehicle has reserve tank enclosed by thermal insulation whose dimensions are selected so liquid gas in reserve tank is limited to simmering so liquid gas storage space is maintained in reserve tank - Google Patents
Reserve circuit for liquid gas-powered vehicle has reserve tank enclosed by thermal insulation whose dimensions are selected so liquid gas in reserve tank is limited to simmering so liquid gas storage space is maintained in reserve tank Download PDFInfo
- Publication number
- DE102004036318A1 DE102004036318A1 DE200410036318 DE102004036318A DE102004036318A1 DE 102004036318 A1 DE102004036318 A1 DE 102004036318A1 DE 200410036318 DE200410036318 DE 200410036318 DE 102004036318 A DE102004036318 A DE 102004036318A DE 102004036318 A1 DE102004036318 A1 DE 102004036318A1
- Authority
- DE
- Germany
- Prior art keywords
- reserve
- reserve tank
- gas
- liquid gas
- circuit according
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
- F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0335—Check-valves or non-return valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Reserveschaltung für flüssiggasbetriebene Fahrzeuge nach dem Oberbegriff des Anspruches 1.The The invention relates to a reserve circuit for liquefied gas-powered Vehicles according to the preamble of claim 1.
Flüssiggas, z. B. Propan, wird kommerziell in Gasflaschen bereitgestellt, die anstelle des Tanks bei gewissen Fahrzeugen, zum Beispiel Gabelstaplern, verwendet werden, wobei nach Verbrauch des Inhalts die leere Gasflasche gegen eine volle Gasflasche getauscht wird. In diesem Zusammenhang besteht ein Problem mit der Anzeige des Gasinhalts der Flasche, wenn der Gasinhalt zur Neige geht. Entweder man verschenkt Restinhalt in der Gasflasche, oder das Fahrzeug bleibt stehen, bevor es die Station für Gasflaschenwechsel erreicht hat.LPG, z. As propane, is provided commercially in gas cylinders, the instead of the tank on certain vehicles, for example forklift trucks are, after consumption of the contents of the empty gas cylinder against a full gas bottle is exchanged. In this context exists a problem with displaying the gas content of the bottle when the Gas content is running out. Either you give away leftovers in the gas cylinder, or the vehicle stops before it is the station for gas cylinder change has reached.
Es ist auch bereits eine Reserveschaltung für flüssiggasbetriebene Fahrzeuge bekannt (DE-U 202 17 298), bei der ein Druckschalter den Leerzustand in der Gasflasche feststellt und signalisiert, und bei der ein Druckregler verwendet wird, um aus dem Reservebehälter Gas abzuziehen. Nachteilig bei dieser Reserveschaltung ist der Umstand, dass ständig verdampftes Gas über eine Bypassleitung aus dem Reservebehälter zum Antriebsmotor gelangt, wodurch die Größe der Restmenge an Flüssiggas in dem Reservebehälter unsicher wird, wenn eine gewisse Zeit verstrichen ist.It is already a reserve circuit for liquefied gas-powered vehicles known (DE-U 202 17 298), in which a pressure switch the empty state in the gas cylinder detects and signals, and a pressure regulator is used to withdraw gas from the reserve tank. adversely in this reserve circuit is the fact that constantly evaporated Gas over a bypass line passes from the reserve tank to the drive motor, reducing the size of the residual quantity on liquefied gas in the reserve tank becomes uncertain when a certain amount of time has passed.
Zur Abhilfe könnten, gesteuert von einer Elektronik, Sperrventile betätigt werden, um Flüssiggas im Reservebehälter einzusperren beziehungsweise im Falle der Erschöpfung der Gasflasche freizugeben. Dies stellt eine teure Lösung des Problems dar.to Remedy could, controlled by an electronics, check valves are operated to LPG in the reserve tank lock in or release in case of exhaustion of the gas cylinder. This represents an expensive solution of the problem.
Der Erfindung liegt die Aufgabe zugrunde, eine wirtschaftlich zu erstellende Reserveschaltung anzugeben, bei der die Reservekapazität an Flüssiggas keinen allzu großen Schwankungen unterliegt, so dass eine sichere Basis für die Restlaufzeit des Fahrzeugs erhalten wird.Of the Invention is based on the object to create an economically Reserve circuit, in which the reserve capacity of LPG not too big Fluctuations are subject, leaving a safe basis for the residual maturity of the vehicle is obtained.
Die gestellte Aufgabe wird aufgrund der Merkmale des Anspruches 1 gelöst und durch die weiteren Merkmale der abhängigen Ansprüche ausgestaltet und weiterentwickelt.The Asked object is achieved on the basis of the features of claim 1 and by the other characteristics of dependent claims designed and developed.
Im Einzelnen wird im unteren Bereich des Reservebehälters ein Flüssiggas-Speicherraum dadurch gebildet, dass die Verbindungsleitung im oberen Bereich des Reservebehälters angeschlossen wird. Der Bereich zwischen Zufuhrleitung und Verbindungsleitung wird im Normalbetrieb als Durchströmungsraum für das Flüssiggas benutzt. Wenn der Inhalt der Gasflasche erschöpft ist, strömt kein Flüssiggas mehr zwischen Treibstoffzufuhrleitung und Verbindungsleitung. Gefördert durch die normale Saugwirkung des Antriebsmotors sinkt der Druck innerhalb der Hohlräume des Systems unterhalb des Gasdruckes von etwa 10 bar (bei Propan als Flüssiggas) ab, was durch einen Drucksensor feststellbar ist, der auf einen bestimmten Druck unterhalb dieser 10 bar, z. B. auf 3 bar, eingestellt ist und bei dessen Unterschreiten ein Warn- und Stellsignal abgibt. Mit dem Druckabfall fängt das verflüssigte Gas im Reservebehälter zu sieden an, was Wärme verbraucht, so dass die Temperatur im Reservebehälter auf bis zu 30°C abfällt, was durch einen Temperatursensor feststellbar ist, der ebenfalls (oder statt des Drucksensors) ein Warn- und Stellsignal abgeben kann.in the Specifically, at the bottom of the reserve tank, there is a liquid gas storage space formed by that the connecting line in the upper area of the reserve tank is connected. The area between supply line and connecting line is used in normal operation as a flow space for the liquefied gas. If the content the gas bottle is exhausted is, flows no liquefied gas more between fuel supply line and connecting line. Funded by the normal suction of the drive motor decreases the pressure inside the cavities of the system below the gas pressure of about 10 bar (for propane as liquefied petroleum gas), which can be determined by a pressure sensor, which depends on a specific Pressure below this 10 bar, z. B. 3 bar, is set and when it falls below a warning and control signal outputs. With the pressure drop begins the liquefied Gas in the reserve tank to simmer, which is heat consumed, so that the temperature in the reserve tank drops to up to 30 ° C, which can be detected by a temperature sensor, which also (or instead of the pressure sensor) can issue a warning and control signal.
Das Stellsignal des Drucksensors und/oder des Temperatursensors führt zur Öffnung eines Sperrventils an einer Reservegas-Abgabeleitung, die mit der Treibstoffabgabeleitung verbunden ist und zum Antriebsmotor des Fahrzeugs führt. Während des Reservebetriebs ist dieses Sperrventil geöffnet und es wird das Warnsignal abgegeben. Der niedrige Druck führt dazu, dass sich eine Dampfblase im oberen Bereich des Reservebehälters bildet. Da Flüssiggas durch Sieden in diesen Raumbereich innerhalb des Reservebehälters hinein verdampft, führt dies zur Absenkung der Temperatur und damit zu einer Hemmung des Verdampfungsvorganges. Indem erfindungsgemäß der Reservebehälter und vorzugsweise angrenzende Bauteile von einer Wärmeisolierung umgeben sind, wird der Eintrag von Wärme in den Reservebehälter eingeschränkt und damit das Sieden des Flüssiggases behindert. Somit bleibt ein beträchtlicher Teil des Inneren des Reservebehälters mit Flüssigkeit gefüllt und diese kann über die Reservegas-Abgabeleitung abgezogen werden.The Control signal of the pressure sensor and / or the temperature sensor leads to the opening of a check valve at a reserve gas delivery line connected to the fuel delivery line is connected and leads to the drive motor of the vehicle. During the Reserve operation, this check valve is open and it will be the warning signal issued. The low pressure leads for a vapor bubble to form in the upper part of the reserve tank. Because liquefied gas by boiling into this space area inside the reserve tank evaporates, leads this to lower the temperature and thus to inhibit the Evaporation process. According to the invention, the reserve tank and preferably adjacent components are surrounded by a heat insulation, becomes the entry of heat in the reserve tank limited and thus the boiling of the liquefied gas with special needs. This leaves a considerable amount Part of the interior of the reserve tank with liquid filled and this can over the reserve gas discharge line subtracted from.
Mit der Erfindung wird erreicht, dass im Volumen des Reservebehälters verflüssigter Treibstoff erhalten bleibt und für den Reservebetrieb bis zum Austausch der Gasflasche zur Verfügung gestellt wird. Dabei brauchen keine gesonderten Maßnahmen unternommen werden, um das Flüssiggas in dem Reservebehälter zwangsweise einzusperren, das heißt am Absieden und Ausdunsten über die Verbindungsleitung zu hindern. Überraschender Weise gelingt die Absperrung in praktisch ausreichender Weise durch Behinderung des Wärmetransports ins Innere des Reservebehälters.With the invention is achieved that liquefied in the volume of the reserve tank Fuel is preserved and for the reserve operation until replacement of the gas cylinder is provided. No special measures need to be taken to the liquefied gas in the reserve tank forcibly imprisoned, that is to say at the point of segregation and evaporation over the Prevent connection line. surprisingly Way succeeds the barrier in a practically sufficient manner Obstruction of heat transport inside the reserve tank.
Die Erfindung hat den Vorteil der einfachen und robusten Ausbildung ihrer Teile.The Invention has the advantage of simple and robust training their parts.
Ausführungsbeispiele
der Erfindung werden anhand der Zeichnung beschrieben. Diese zeigt
Die
hauptsächlichsten
Teile der Reserveschaltung sind eine Treibstoffzufuhrleitung
Die
Leitungen
Die
Zufuhrleitung
Im
Betrieb der Reserveschaltung füllt
sich der Reservebehälter
Wenn
sich der Hohlraum
Bei
der erfindungsgemäßen Reserveschaltung
kann die Gasflasche
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410036318 DE102004036318A1 (en) | 2004-07-27 | 2004-07-27 | Reserve circuit for liquid gas-powered vehicle has reserve tank enclosed by thermal insulation whose dimensions are selected so liquid gas in reserve tank is limited to simmering so liquid gas storage space is maintained in reserve tank |
EP05016354A EP1637795A1 (en) | 2004-07-27 | 2005-07-27 | Control of the reserveliquid in a vehicle powered by liquid gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410036318 DE102004036318A1 (en) | 2004-07-27 | 2004-07-27 | Reserve circuit for liquid gas-powered vehicle has reserve tank enclosed by thermal insulation whose dimensions are selected so liquid gas in reserve tank is limited to simmering so liquid gas storage space is maintained in reserve tank |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004036318A1 true DE102004036318A1 (en) | 2006-02-16 |
Family
ID=35641131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410036318 Withdrawn DE102004036318A1 (en) | 2004-07-27 | 2004-07-27 | Reserve circuit for liquid gas-powered vehicle has reserve tank enclosed by thermal insulation whose dimensions are selected so liquid gas in reserve tank is limited to simmering so liquid gas storage space is maintained in reserve tank |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1637795A1 (en) |
DE (1) | DE102004036318A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043815A1 (en) | 2010-11-12 | 2012-05-16 | Robert Bosch Gmbh | Replacement tank for filling e.g. hydrogen in hydrogen fuel cell system of vehicle, has control unit for controlling filler valve, and communication interface exchanging data between control unit and controller of energy conversion system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE885505C (en) * | 1944-03-05 | 1953-08-06 | Aral Ag B V | Plant for LPG operation of internal combustion engines |
DE885627C (en) * | 1944-03-10 | 1953-08-06 | Aral Ag B V | Plant for LPG operation of internal combustion engines |
DE1032288B (en) * | 1955-12-03 | 1958-06-19 | Veneta Gas | Arrangement of reserve containers, especially for glass bottles or containers for pressurized liquids |
EP0473555A3 (en) * | 1990-07-31 | 1992-09-09 | I.Co.M. S.R.L. | Improvements on liquid gas containers and their distributor valve, in particular for use in campers and the like |
GB2272276B (en) * | 1992-11-06 | 1995-03-29 | Kim San Toh | Improvements in LPG cylinders |
DE10021681C2 (en) * | 2000-05-05 | 2002-06-13 | Messer Griesheim Gmbh | Energy storage system, in particular system for storing hydrogen |
DE20217298U1 (en) * | 2002-01-10 | 2003-05-22 | Leis Franz Josef | Stand-by circuit for liquefied gas powered vehicles, such as fork-lift trucks |
-
2004
- 2004-07-27 DE DE200410036318 patent/DE102004036318A1/en not_active Withdrawn
-
2005
- 2005-07-27 EP EP05016354A patent/EP1637795A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043815A1 (en) | 2010-11-12 | 2012-05-16 | Robert Bosch Gmbh | Replacement tank for filling e.g. hydrogen in hydrogen fuel cell system of vehicle, has control unit for controlling filler valve, and communication interface exchanging data between control unit and controller of energy conversion system |
Also Published As
Publication number | Publication date |
---|---|
EP1637795A1 (en) | 2006-03-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |