WO2017186341A1 - Fluid energy machine - Google Patents
Fluid energy machine Download PDFInfo
- Publication number
- WO2017186341A1 WO2017186341A1 PCT/EP2017/000482 EP2017000482W WO2017186341A1 WO 2017186341 A1 WO2017186341 A1 WO 2017186341A1 EP 2017000482 W EP2017000482 W EP 2017000482W WO 2017186341 A1 WO2017186341 A1 WO 2017186341A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid energy
- energy machine
- housing
- pressure
- pressure medium
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
- F04B2015/081—Liquefied gases
- F04B2015/0822—Hydrogen
Definitions
- the invention relates to a fluid energy machine comprising a crank drive and a drive device mechanically connected to the crank drive, wherein the drive device comprises two electric motors whose respective output members are mechanically connected to the crank drive and a method for operating this fluid energy machine.
- cryogenic pumps or cryogenic high-pressure pump are known, which are suitable to promote a fluid in the low temperature range.
- a pump which is designed in particular for cryogenic media.
- This pump comprises a piston-cylinder unit which is adapted to convey and / or compress very cold fluids, such as hydrogen.
- Such pumps are usually operated with a hydraulic drive.
- Other conventional cryogenic pumping devices include a rotary drive instead of the hydraulic drive, which in turn is coupled to the piston of the piston-cylinder unit.
- the hydraulic drive for the cryogenic pumping device usually requires a relatively large volume for housing additional units and a cooling device and a reservoir for the hydraulic fluid. Furthermore, a pump device with hydraulic drive in the installation and maintenance as well as for the measuring equipment to be installed for measuring distance in the hydraulic cylinder is relatively expensive. Usually, a linear displacement measuring system is to be arranged for this purpose. In order to avoid impermissible peak values of the volume flow to be generated, a sine-like acceleration curve of the piston is to be set in the pump device. When using a hydraulic drive device is the
- a fluid machine which is capable of overcoming the disadvantages comprises a crank mechanism and a drive device mechanically connected to the crank mechanism, with which a torque can be introduced into the crank mechanism.
- the fluid energy machine comprises a piston-cylinder unit whose piston is mechanically connected to the crank mechanism.
- the drive device comprises two electric motors whose respective output members are mechanically connected to the crank mechanism.
- the piston-cylinder unit comprises only one piston and only one cylinder.
- the electric motors hereinafter also referred to as motors for short, are rotatory motors, whereby the arrangement of more than two motors should not be excluded.
- the drive device thus comprises at least two motors.
- Speeds can use the electric motors high torque in the range of 1000 Up to 8000 Nm, in particular up to 4000 Nm, can be achieved. The resulting on the
- the force exerted on the piston rod is 10 to 150 kN, in particular 15 to 20 kN.
- the bearings can be dimensioned correspondingly smaller, or the waves can be run with a smaller diameter.
- Category I and II explosion protection zones are not possible due to the availability of suitable electric motors currently available on the market. However, this is especially important for the promotion of hydrogen and other combustible substances.
- the object of the invention is to provide a fluid energy machine and a method for operating a fluid energy machine, which can be used in explosion protection zones of category I and I I.
- the object is achieved on the device side in such a way that the fluid energy machine is set up within a housing which seals the fluid energy machine from the environment and which is connected to a pressure maintenance system.
- water-cooled electric motors are used as electric motors.
- no air supply for cooling the motors is necessary and the sealing of the housing is easier to implement.
- the object is achieved such that the fluid energy machine is set up within a housing through which a pressure medium flows.
- the housing is preferably a force-bearing housing.
- the housing is divided into several rooms, the rooms are in communication.
- the spaces are connected in series.
- the spaces are flowed through successively by the pressure medium.
- the housing is subdivided into three or five spaces, wherein a first space surrounds the crank drive and a passage for connecting the crank drive to a piston-cylinder unit is provided. All bushings of the housing are known to those skilled in the art
- Two other rooms each represent the outer space of the respective electric motor.
- Bushings for cooling and power supply as well as control and regulation technology Another two rooms form in a preferred embodiment, the respective inner space of the two electric motors. Within these rooms is the connection of the respective shaft for power transmission of the respective motor. These spaces are sealed off from the atmosphere by additional covers with special gaskets and allow the passage of the waves.
- the electric motors may be arranged in another preferred embodiment only within a room.
- the housing is in particular designed so that an overpressure between 0, 01 and 50 mbar, in particular of 2.5 mbar can be created.
- This means that the seals for sealing all bushings are designed so that at an overpressure of 0.01 and 50 mbar, in particular of 2.5 mbar, inside the housing compared to the environment of the fluid energy machine, no
- the overpressure can also be realized in a preferred embodiment in a sealed against the environment housing when no constant flow takes place.
- the housing communicates via an inlet and an outlet with the pressure-retaining system.
- the inlet is arranged on the first space and the outlet is installed on the last, in particular the fifth space.
- the rooms communicate with each other through holes that all
- Cavities are interconnected and can be traversed by a pressure medium.
- an overpressure of the pressure medium is maintained by the pressure holding system.
- the pressure holding system is preferably a compressor station or a Bundles of cylinders. If pressure medium escapes from the housing into the environment as a result of slight leakage and there is thus a loss of pressure medium, the pressure retaining system can introduce new pressure medium.
- the pressure medium does not have to flow continuously through the housing, but preferably new pressure medium can only ever be added if the overpressure in the housing falls below a predetermined value.
- the pressure medium used is advantageously air, nitrogen or another inert gas.
- the pressure medium flows preferably at an overpressure between 0.01 and 50 mbar, in particular at 2.5 mbar through the housing.
- sensors may be provided within the pressure-maintaining system and / or within the housing to monitor the pressure of the pressure medium. Should the deviation of the pressure from a predetermined value be detected, for example a pressure loss, this indicated a leakage.
- the sensors are advantageously in connection with the electric motors, so that they can be switched off and de-energized. Thus, the electric motors would no longer be an ignition source.
- sensors may be provided which detect traces of the medium to be conveyed within the pressure medium in order to determine a leakage within the housing.
- sensors may be provided which detect traces of the medium to be conveyed within the pressure medium in order to determine a leakage within the housing.
- the fluid energy machine may exceed a predetermined one
- the system After a standstill of the fluid energy machine and / or the pressure maintenance system, the system is preferably for a certain time, in particular 2 to 5 minutes, rinsed with an increased flow of the pressure medium to remove any impurities.
- the fluid energy machine is used to generate a hydrogen volume flow and to compress hydrogen. It is preferred for refueling a vehicle with liquid or gaseous
- the hydrogen is compressed to a system pressure of 50 to 1000 bar, in particular 350 to 500 bar or 700 or 900 bar.
- the delivery rate of the hydrogen is adjusted via the frequency of the electric motors, so that it is between 0 and 250 kg / h, in particular between 30 and 200 kg / h.
- FIG. 1 shows a schematic embodiment of the invention
- the pump is suitable for cryogenic fluids, in particular for hydrogen.
- the housing is divided into the rooms 1 to 5, wherein the rooms communicate with each other.
- Room 1 encloses the crank drive A.
- Space 2 and space 4 each represent the outer space of the respective electric motor M.
- the respective magnets, coils and the power electronics are in these
- Room 3 and room 5 form the respective inner space of the two electric motors M. Within these spaces is the connection of the respective shaft for power transmission of the respective motor. These rooms are sealed off by additional covers W with special seals against the atmosphere.
- a pressure medium is introduced into the housing.
- the pressure medium flows through all rooms 1 to 5 in succession and is returned to room 5 via an outlet D back to the pressure holding system.
- the pressure holding system is designed to maintain the pressure medium at a pressure of 2.5 mbar. If pressure medium escapes into the environment due to small leaks, pressure medium can be supplied in the pressure holding system. If a pressure drop in the pressure holding system is detected or too high
- Hydrogen content detected within the pressure medium is carried out an emergency shutdown.
- the motors are stopped and de-energized.
- the engines are no longer an ignition source.
- the system can be restarted.
- the pressure holding system for a certain time, in particular 2 min flushed with an increased mass flow of the pressure medium. If, during standstill, hydrogen has leaked from the pump or lines into the housing, it will be removed or at least diluted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17720359.3A EP3449123A1 (en) | 2016-04-28 | 2017-04-12 | Fluid energy machine |
CN201780026620.4A CN109072891A (en) | 2016-04-28 | 2017-04-12 | fluid energy machine |
KR1020187034407A KR20190002606A (en) | 2016-04-28 | 2017-04-12 | Fluid energy machine |
JP2018556377A JP2019515177A (en) | 2016-04-28 | 2017-04-12 | Fluid energy device |
US16/096,062 US20190128246A1 (en) | 2016-04-28 | 2017-04-12 | Fluid energy machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016005216.3A DE102016005216A1 (en) | 2016-04-28 | 2016-04-28 | Fluid energy machine |
DE102016005216.3 | 2016-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017186341A1 true WO2017186341A1 (en) | 2017-11-02 |
Family
ID=58644993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/000482 WO2017186341A1 (en) | 2016-04-28 | 2017-04-12 | Fluid energy machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US20190128246A1 (en) |
EP (1) | EP3449123A1 (en) |
JP (1) | JP2019515177A (en) |
KR (1) | KR20190002606A (en) |
CN (1) | CN109072891A (en) |
DE (1) | DE102016005216A1 (en) |
WO (1) | WO2017186341A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2146096A (en) * | 1983-08-29 | 1985-04-11 | Helix Tech Corp | Cryogenic refrigeration |
FR2644211A1 (en) * | 1989-03-10 | 1990-09-14 | Deutsche Forsch Luft Raumfahrt | CRYOGENIC GAS PUMP, ESPECIALLY FOR USE IN VEHICLES |
DE9301603U1 (en) * | 1993-02-05 | 1994-06-09 | Knf-Neuberger Gmbh, 79112 Freiburg | Pump for pumping explosive gases |
WO2004088141A2 (en) * | 2003-04-02 | 2004-10-14 | Gebr. Becker Gmbh & Co. Kg | Oscillating piston pump |
US20040255591A1 (en) * | 2003-06-20 | 2004-12-23 | Denso Corporation Nippon Soken | Fluid machine for converting heat into mechanical rotational force |
DE102009005447A1 (en) * | 2009-01-21 | 2010-07-22 | Wabco Gmbh | Piston machine for motor vehicle, particularly commercial vehicle, has two crankshafts, two piston rods and conjoint piston, where both piston rods conjointly drive piston by bearing and piston bolt |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3487657A (en) * | 1968-12-04 | 1970-01-06 | Trane Co | Refrigeration system with multiple motor and crankshaft compressor |
DE19709206A1 (en) * | 1997-03-06 | 1998-09-10 | Leybold Vakuum Gmbh | Vacuum pump |
US5957667A (en) * | 1997-05-23 | 1999-09-28 | Ballard Generation Systems Inc. | Oilless compressor with a pressurizable crankcase and motor containment vessel |
JP2001280247A (en) * | 2000-03-31 | 2001-10-10 | Toyota Autom Loom Works Ltd | Motor-driven compressor |
CN2453151Y (en) * | 2000-07-21 | 2001-10-10 | 王若亮 | Water supply apparatus using water power |
KR20030032303A (en) * | 2001-10-17 | 2003-04-26 | 엘지전자 주식회사 | device for pumping hydrogen in system of hydrogen storage alloy |
DE102007035616A1 (en) | 2007-07-30 | 2009-02-05 | Linde Ag | Cryogenic medium piston pump, especially for liquid hydrogen for vehicles, has device for supplying cooling medium into region of cylinder volume wall |
CN201137518Y (en) * | 2008-01-10 | 2008-10-22 | 陈维加 | Opposed type generator |
CN102042188A (en) * | 2009-10-21 | 2011-05-04 | 中国科学院理化技术研究所 | Low-temperature liquid hydrogen pump and application thereof |
NO333684B1 (en) * | 2011-03-07 | 2013-08-12 | Aker Subsea As | UNDERWATER PRESSURE COOKING MACHINE |
CN202194801U (en) * | 2011-09-05 | 2012-04-18 | 广州市安途电器有限公司 | Dual drive type inflation pump |
CN202358618U (en) * | 2011-11-18 | 2012-08-01 | 三一重型装备有限公司 | Dual-motor drive device of conveyor and conveyor |
GB2501735B (en) * | 2012-05-02 | 2015-07-22 | Edwards Ltd | Method and apparatus for warming up a vacuum pump arrangement |
AT513836B1 (en) * | 2013-09-23 | 2014-08-15 | Hoerbiger Kompressortech Hold | Compressor with and method for flushing the compressor housing with purge gas |
CN203674886U (en) * | 2014-01-17 | 2014-06-25 | 南阳防爆(苏州)特种装备有限公司 | Positive pressure ventilation control apparatus for explosion-proof motor |
-
2016
- 2016-04-28 DE DE102016005216.3A patent/DE102016005216A1/en not_active Withdrawn
-
2017
- 2017-04-12 EP EP17720359.3A patent/EP3449123A1/en not_active Withdrawn
- 2017-04-12 JP JP2018556377A patent/JP2019515177A/en active Pending
- 2017-04-12 KR KR1020187034407A patent/KR20190002606A/en unknown
- 2017-04-12 WO PCT/EP2017/000482 patent/WO2017186341A1/en active Application Filing
- 2017-04-12 CN CN201780026620.4A patent/CN109072891A/en not_active Withdrawn
- 2017-04-12 US US16/096,062 patent/US20190128246A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2146096A (en) * | 1983-08-29 | 1985-04-11 | Helix Tech Corp | Cryogenic refrigeration |
FR2644211A1 (en) * | 1989-03-10 | 1990-09-14 | Deutsche Forsch Luft Raumfahrt | CRYOGENIC GAS PUMP, ESPECIALLY FOR USE IN VEHICLES |
DE9301603U1 (en) * | 1993-02-05 | 1994-06-09 | Knf-Neuberger Gmbh, 79112 Freiburg | Pump for pumping explosive gases |
WO2004088141A2 (en) * | 2003-04-02 | 2004-10-14 | Gebr. Becker Gmbh & Co. Kg | Oscillating piston pump |
US20040255591A1 (en) * | 2003-06-20 | 2004-12-23 | Denso Corporation Nippon Soken | Fluid machine for converting heat into mechanical rotational force |
DE102009005447A1 (en) * | 2009-01-21 | 2010-07-22 | Wabco Gmbh | Piston machine for motor vehicle, particularly commercial vehicle, has two crankshafts, two piston rods and conjoint piston, where both piston rods conjointly drive piston by bearing and piston bolt |
Also Published As
Publication number | Publication date |
---|---|
JP2019515177A (en) | 2019-06-06 |
EP3449123A1 (en) | 2019-03-06 |
KR20190002606A (en) | 2019-01-08 |
CN109072891A (en) | 2018-12-21 |
US20190128246A1 (en) | 2019-05-02 |
DE102016005216A1 (en) | 2017-11-02 |
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