Pump system for delivering cryogenic liquids
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0958140
(2002-04-16)
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우선권정보 |
DE-0015847 (1999-04-08) |
국제출원번호 |
PCT/EP00/03033
(2000-04-05)
|
국제공개번호 |
WO00/61944
(2000-10-19)
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발명자
/ 주소 |
|
출원인 / 주소 |
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대리인 / 주소 |
Millen, White, Zelano & Branigan, P.C.
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인용정보 |
피인용 횟수 :
10 인용 특허 :
6 |
초록
▼
A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H2. It consists of a container for receiving the cryogenic liquid, in which at least one pump is arranged that is designed as a reciprocating pump with connecting rod actuation
A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H2. It consists of a container for receiving the cryogenic liquid, in which at least one pump is arranged that is designed as a reciprocating pump with connecting rod actuation and spring recover. Pump cylinder (10) of the reciprocating pump is divided by means of plunger (24, 37) into two chambers (a and b) that are arranged on the pressure side or the induction side. By exerting tensile forces on connecting rod (29), in the pressure stroke the cryogenic liquid that is located in the container is initially trapped in chamber (b). When connecting rod (29) is returned to its starting position by return spring (23), the liquid that is trapped in chamber (b) is then hurled without pressure into chamber (a). In the subsequent pressure stroke, the liquid is finally released via a gap (d) to a pressure housing and from there to the consumer by exerting tensile forces on connecting rod (29).
대표청구항
▼
1. A pump system for delivering cryogenic liquids with a container for receiving cryogenic liquid and at least one reciprocating pump that is arranged in the container in such a way that only the pump ( 2) is completely immersed in the cryogenic liquid, wherein the reciprocating pump has at least on
1. A pump system for delivering cryogenic liquids with a container for receiving cryogenic liquid and at least one reciprocating pump that is arranged in the container in such a way that only the pump ( 2) is completely immersed in the cryogenic liquid, wherein the reciprocating pump has at least one connecting rod (29) that is connected only to a plunger (24,37), only said connecting rod (29) being brought out from the container (1) through a heat insulation (7) of a neck pipe (6) for coupling with a driving unit so that tensile forces can be applied from outside of the container, the connecting rod (29) being provided with a return spring (23) in such a way that said plunger (24,37) can be returned to a starting position opposite the pressure stroke, whereby the connecting rod (29) is the only thermal bridge from the pump (2) to the driving unit.2. A pump system according to claim 1, whereina pump cylinder (10) of the reciprocating pump is divided by the plunger (24,37) into a pressure side (a) and an induction side (b), whereby the plunger (24,37) has4 plunger body (24) as well as a movable plunger ring (25,26) that is brought to rest on plunger body (24) when plunger (24,37) moves in the direction opposite the pressure stroke in such a way that a gap is formed that produces a connection between pressure side (a) and induction side (b) and closes the gap when plunger (24,37) moves in the pressure stroke,on the pressure-side end of pump cylinder (10), a spring-loaded exhaust valve (16,17) is provided, andon the induction-side end of pump cylinder (10), a bottom valve (50) is arranged that can be actuated by means of the connecting rod (29) in such a way that it opens on the pressure stroke and is closed when the stroke reverses.3. A pump system according to claim 1, wherein on the pressure-side end of pump cylinder (10), a seal (45) is arranged to seal connecting rod (29) relative to a pump housing, which has a valve (44) that can be actuated by the connecting rod (29), and said valve (44) is closed when tensile forces are exerted on connecting rod (29) and is opened when connecting rod (29) returns under the action of the spring.4. A pump system according to one of claim 1, wherein the reciprocating pump is inserted into the container from above, so that the induction side of the reciprocating pump is immersed in the cryogenic liquid.5. A pump system according to one of claim 1, wherein the container is vacuum-insulated.6. A pump system according to claim 1, wherein several reciprocating pumps (2) are arranged in the container (1) and are connected on the pressure side (a) to a common pressure housing (3).7. A pump system according to claim 6, wherein the connecting rods (29) of the individual reciprocating pumps are connected to a swash plate drive that is arranged outside of the container.8. A pump system according to claim 6, wherein the neck pipe (6) with the insulation (7) therein has only the connecting rods (29) extending therethrough for coupling with the driving unit; whereby the connecting rods (29) are the only thermal bridges from the pump (2) to the driving unit.
이 특허에 인용된 특허 (6)
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Brown Bruce G. (Corona CA) Crowl Robert E. (Corpus Christi TX) Westermann Phillip J. (El Toro CA), Cryogenic pump.
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Brown Bruce G. (Corona CA) Crowl Robert E. (Corpus Christi TX) Westermann Phillip J. (El Toro CA), Cryogenic pump.
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Schneider Gottfried (Stuttgart DEX) Peschka Walter (Sindelfingen DEX), Cryogenic pump multi-part piston with thermal expansivity compensated polytetrafluoroethylene seal rings.
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Nieratscher Willi (Ammerbuch DEX) Peschka Walter (Sindelfingen DEX), Processing system for liquid hydrogen.
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Tornare Jean (Hauptstrasse 49 CH 4422 Arisdorf/BL CHX) Bofinger Klaus (Fuchsmattstrasse 13 CH 4107 Ettingen CHX) Tschopp Claudio (Lachmattstrasse 21 CH 4132 Muttenz CHX), Pump for cryogenic fluids.
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Murakami Muneo (Nishinomiya JPX) Ishizaki Zentaro (Kamakura JPX), Reciprocating type oil-free gas compressor.
이 특허를 인용한 특허 (10)
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Bean, Sunil Jefferey; Steffen, Joshua Wayne; Coldren, Dana Ray; Campion, Robert Michael, Barrel assembly for a fluid pump having separate plunger bore and outlet passage.
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Popadiuc, Peter, Cryogenic fluid system and method of operating same.
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Stockner, Alan R., Drive assembly and pump assembly arrangement for cryogenic pump.
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Coldren, Dana R.; Mahmood, Sana, Dual-stage cryogenic pump.
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Popadiuc, Peter, Machine system having submersible pumping system, and method.
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Noble, Stephen D.; Brook, Thomas C.; Brennan, Daniel J. H.; LeBlanc, Valerie Nadia, Method and apparatus for delivering pressurized gas.
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Steffen, Joshua; Hazari, Shivangini Singh, Pump for cryogenic liquids having temperature managed pumping mechanism.
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Steffen, Joshua W.; Bean, Sunil J.; Brasche, Adrienne M.; Brown, Cory A.; Mahmood, Sana, Pump having inlet reservoir with vapor-layer standpipe.
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Campion, Robert Michael; Truhan, Jr., John Jay; Steffen, Joshua; Hazari, Shivangini Singh; Taylor, Steven Charles; Pollard, Michael James; Stockner, Alan Ray, Pump with plunger having tribological coating.
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Steffen, Joshua Wayne; Brown, Cory Andrew, System and method for priming a pump.
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