EP1574714A2 - Pumpenaggregat - Google Patents
Pumpenaggregat Download PDFInfo
- Publication number
- EP1574714A2 EP1574714A2 EP05005006A EP05005006A EP1574714A2 EP 1574714 A2 EP1574714 A2 EP 1574714A2 EP 05005006 A EP05005006 A EP 05005006A EP 05005006 A EP05005006 A EP 05005006A EP 1574714 A2 EP1574714 A2 EP 1574714A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- pump unit
- electric motor
- hydraulic fluid
- inner tube
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims description 25
- 238000013016 damping Methods 0.000 description 19
- 239000003921 oil Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
Definitions
- the invention relates to a pump unit comprising a Electric motor and at least one by the electric motor driven delivery pump for conveying Hydraulic fluid, wherein the electric motor and the Feed pump together in a closed housing are housed.
- Such pump units are used to supply in particular machine tools with hydraulic fluid. From the prior art (DE 38 39 689 C2 or DE 100 22 174 Al) are different, such pump units known.
- Known pump units have the disadvantage that due to the moving parts of the electric motor and the Feed pump comparatively loud operating noise cause. With a corresponding performance of the Pump unit is also an additional cooling of the Electric motor or the feed pump desirable.
- U1 is a low-noise Hydraulic unit has become known in which the Electric motor and the pump of sound-absorbing Sidewalls is surrounded.
- the sound-absorbing side walls are partly having a U-shaped cross-section Reservoir and partly formed Dämmcontactn.
- a hydraulic unit which provides a dry running electric motor, which is surrounded by an oil reservoir.
- the oil tank sees an inner container tube and an outer container tube in front.
- To the two container tubes is as a separate component a hydraulic pump flanged.
- Between the electric motor and the inner container wall is a star-shaped, ribs having provided cooling element, by the one of Fan wheel sucked air flowing through a radiator flows through and causes the cooling of the electric motor.
- the oil tank 10 serves as an oil tank and has depending on Operating state different levels on. To the Filling the oil tank is an oil filler neck intended.
- the present invention is based on the object Pump unit of the type mentioned in the way to train that these low despite high performance Operating noise causes only a small Requested space and has a simple structure.
- This task is accomplished by a pump set with the Characteristics of claim 1 solved. Due to the Flow through the gap of the housing wall is in particular, an effective noise damping of Pump unit causes, whereby the noise emission of the Pump unit can be greatly reduced. In addition, can by the flow cooling of the housing, the Electric motor and / or the feed pump can be achieved.
- the Pump unit is therefore separated from two Hydraulic fluid flows through to one from the actual pumped by the pump pump suction liquid circulation in the space between the housing wall and on the other hand from the cooling liquid circuit through the Electric motor flows. It is both the feed pump as also the electric motor completely under Hydraulic fluid and the electric motor is from the Hydraulic fluid flows through.
- the rotor of the Electric motor rotates in the hydraulic fluid.
- the wall of the housing is at least is formed in sections as a double wall, whose Interspace of hydraulic fluid can be flowed through. This can be a large-scale and effective Vibration of the pump set can be achieved.
- the housing cylindrical in particular circular cylindrical, is formed and that as a double wall an outer tube and a inner, concentrically arranged to the outer tube, inner tube is provided.
- the space between the inner tube and the outer tube is flowed through.
- the entire space between Inner tube and outer tube flows through evenly, so that optimal vibration damping and / or cooling of the Pump unit, or its housing reached can be.
- Straight cylindrical geometries of the housing in Shape of inner tube and outer tube can be easily and inexpensive way to manufacture and still lead to an effective vibration damping and / or cooling.
- the stator of the electric motor according to the invention at the Inside the inner tube arranged. He can do it for example, in the axial direction centered on the inside the inner tube shrunk, glued, welded, screwed or the like may be arranged. A simple yet durable arrangement results then when the electric motor hits the inside of the Shrunk on the inner tube and additionally with the inner tube is arranged glued.
- At least one end face of the outer tube and the Inner tube covered by a common cover element is, wherein the cover member a first contact portion for the inner tube and a second abutment section for the Having outer tube.
- the investment sections can hereby especially in each case as a collar, cylinder counterbore, Ring recess or the like, each with and / or without Be executed sealing elements.
- the cover element In addition to the cover of open sides of the two tubes serves the cover element therefore also for centering and positionally accurate Arrangement of the two pipes.
- both free sides of the tubes each have a cover element be arranged. It is conceivable that the two Cover elements formed at least substantially identical are.
- attachment means for permanent attachment of the cover elements to the pipes be provided. In particular, for example Tie rods find use, with which the cover elements be clamped against the free ends of the tubes.
- the cover elements also connections for the suction line and the pressure line of the feed pump and / or connections for the line for flowing around the feed pump or provide flow through the wall.
- all connections of the Pump unit provided on the cover element.
- a bearing plate on the inside of the Be arranged inside tube for storage of the drive shaft of the electric motor can According to the invention, a bearing plate on the inside of the Be arranged inside tube.
- the drive shaft of the Electric motor advantageously takes advantage of this End shield such that on the electric motor opposite side of the bearing plate, the feed pump with the Drive shaft of the electric motor can be coupled.
- the feed pump in turn is advantageously on the Attached inside the lid member.
- the pump unit thus form the inner tube with the Electric motor and the bearing plate an assembly.
- a further assembly forms the cover element, on which the Pre-pump conveyor is arranged.
- the pump can, for example, by means of bolts on the Be screwed inside the lid member.
- the cover element together with the pump on the Inner tube with electric motor and bearing plate attached.
- at the coupling between the drive shaft of the electric motor and the feed pump may be a plug-in coupling, in particular a cross-coupling, act.
- a cooling device for cooling the Part of the hydraulic fluid which is the Feed pump flows around or the wall flows through.
- the cooling device can either inside the case or outside the case, then as a separate module, be provided.
- About the Cooling device can reduce the temperature of the Hydraulic fluid can be adjusted.
- the Pump unit as a multiple pump unit, and in particular as a double pump unit, is formed. It can the Electric motor on both sides of a drive shaft section have, which is in each case coupled with a feed pump. At the two, opposite free ends of the Inner tube and the outer tube can then each one Cover element may be provided, in each case at the Inside the respective lid member a feed pump is provided.
- the feed pumps can hereby for Achieving different flow rates, respectively different pressures, be designed. This has in return to known multiple pump units, in which the individual feed pumps lying on a shaft arranged one behind the other, the advantage that the individual couplings only only the load torque have to transfer the coupled with them feed pump applies.
- FIG. 1 shows an inventive pump unit 10 shown having an electric motor 12 and two through the Electric motor 12 driven feed pumps 14, 16 for Promotion of hydraulic fluid includes.
- the Electric motor 12 and the two feed pumps 16 are in a housing 18 housed in the area of his Mantels has a double wall, the space between them 20 during operation of the pump unit of a part of hydraulic fluid delivered to the pump unit is flowed through.
- the housing 18 is essentially formed by a circular cylindrical inner tube 22, a circular cylindrical Outer tube 24, and two the respective end faces of the Inner tube 22 and the outer tube 24 occlusive Cover elements 26, 28.
- the inner tube 22 and the outer tube 24 are arranged concentrically with each other; between the Outside of the inner tube and the inside of the Outer tube is that of hydraulic fluid flow-through gap 20.
- the stator 13 of the electric motor 12 is on the inside the inner tube 22 fixedly disposed, for example by Shrinking and / or gluing.
- the electric motor 12 sees on the rotor 15, a drive shaft 30 before, the free ends one each on the inside of the inner tube 22nd pass through arranged bearing plate 32.
- the free ends the drive shaft 30 are connected to the respective feed pump 14, 16 rotationally coupled and drive the respective feed pump 14, 16 on.
- the rotary coupling is advantageously such that the feed pumps 14, 16 in the axial direction of the free ends of the drive shaft 30 can be plugged.
- the feed pumps 16, 18 are bolt bolts 34 on the Inside of the respective lid member 26, 28th screwed on and are each in a corresponding Housing interior section 51.
- the cover elements 26, 28 are in turn about tie rods 36 with each other such clamped that the inner tube 22 between the two Cover elements 26, 28 is held under pressure.
- the outer tube 24 is floating between the Cover elements 26, 28 arranged.
- abutment sections 38, 40 For positionally accurate arrangement of the inner tube 22 and Outer tube 24 have the cover elements 26, 28 on their inwardly facing sides abutment sections 38, 40 to centered system of the end faces of the inner tube 22 and of the outer tube 24.
- the abutment sections 38, 40 become formed by ring-like circumferential shoulders.
- Sealing elements provided for sealing the joining surface between the outer tube 24 and the respective cover element 26, 28 are provided.
- an annular groove 42 for receiving an O-ring 44 provided.
- the two cover elements 26, 28 each have at least three ports, namely a suction port 46 and a pressure port 48 of the suction pump fluid circuit and a circuit connection 50 for one from the suction pump liquid circuit separately trained cooling and damping medium circuit.
- the Connections are shown in Figure 2, the Top view of the inside of the lid member 26th reproduces.
- To the suction port 46 and the Pressure port 4B close to a suction line 47th or a pressure line 49.
- the connection 46 leads to the suction side 52 of the feed pump 16.
- Der Pressure port 48 comes from the pressure side 54 of Feed pump 16.
- the circuit connection 50 leads to a Cover outlet 56, through which the through the circuit connection 50 pumped hydraulic fluid as cooling and Damping means 58 via which the feed pumps 14, 16 receiving housing interior portions 51 in the Gap 20 between the inner tube 22 and the outer tube 24 arrived.
- the inner tube 22 sees various passages 60, through which the cooling and damping means 58 of the housing interior portions 51 into which it Delivery pumps 14, 16 flows around, in the intermediate space 20 arrives.
- the cooling-damping means 58 first in the on the Inside of the inner tube 22 located Housing interior sections 51 passed from where it over the Passages 60 passes into the intermediate space 20.
- corresponding passages 62 are present.
- the lid exit 56 directly in the area between the inner tube 22 and the Outer tube 24 is located, whereby the cooling-damping means 58th is conveyed directly into the intermediate space 20.
- both Delivery pumps 16, 18 and the double wall 18 of cooling and damping means 58 flows around or flows through.
- This can be an effective Cooling of the electric motor 12 and the two feed pumps 16, 18 can be achieved and on the other hand an effective Damping of the entire pump set.
- By the damping In particular, noise emissions are greatly reduced; the Operating noise of the pump set is greatly reduced.
- a cooling device provided is, with the hydraulic oil or the cooling-damping means 58 to a corresponding temperature is cooled.
- a cooling device is in the Figure 2 indicated by the reference numeral 68.
- the Cooling device 68 may be within the pump set be arranged or as its own assembly the Pump unit 10 upstream.
- the electric motor 12 with stator 13 and rotor 15 is in the in the embodiment shown in Figure 2 of the invention of Cooling and damping means 58 also flows through; of the Rotor 15 thus rotates in the cooling and damping means 58th
- the two pumps 14, 16 can be different flow rates or realize delivery pressures. Depending on desired flow rate or delivery pressure can in one and the same housing to a corresponding feed pump the inside of the respective cover element 26, 28th be arranged. It is also conceivable that the pump unit 10 is operated only with a feed pump. Depending on Size of the inner tube 22 and outer tube 24 and the housing interior 51 may be the volume of the cooling-damping means 58 inside the pump unit be set. This can optionally be separate reservoir for hydraulic fluid be kept relatively small or completely eliminated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Description
- Figur 1
- einen Längsschnitt durch ein erfindungsgemäßes Pumpenaggregat; und
- Figur 2
- eine Draufsicht auf die Innenseite des Deckelelements eines Pumpenaggregats gemäß Figur 1.
Claims (9)
- Pumpenaggregat (10), umfassend einen Elektromotor (12) und wenigstens eine durch den Elektromotor (12) angetriebene Förderpumpe (14, 16) zum Fördern von Hydraulikflüssigkeit, wobei der Elektromotor (12) und die Förderpumpe (14, 16) bei Betrieb vollständig unter Hydraulikflüssigkeit liegend von Hydraulikflüssigkeit durchströmt werden und gemeinsam in einem geschlossenen und zylindrischen, insbesondere kreiszylindrischen Gehäuse (18) untergebracht sind, wobei das Gehäuse eine doppelte Wandung mit einem Außenrohr (24) und einem inneren, konzentrisch zum Außenrohr angeordneten Innenrohr (22) umfasst und der Zwischenraum der Wandung bei Betrieb von einem Teil (58) der von dem Pumpenaggregat (10) geförderten Hydraulikflüssigkeit durchströmt wird.
- Pumpenaggregat (10) nach Anspruch 1, dadurch gekennzeichnet, dass der Stator des Elektromotors an der Innenseite des Innenrohres (22) angeordnet ist (12).
- Pumpenaggregat (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass wenigstens eine Stirnseite des Außenrohrs (24) und des Innenrohrs (22) von einem gemeinsamen Deckelement (26, 28) abgedeckt wird, wobei das Deckelelement einen erste Anlageabschnitt (38) für das Innenrohr (22) und einen zweiten Anlageabschnitt (40) für das Außenrohr (24) aufweist.
- Pumpenaggregat (10) nach Anspruch 3, dadurch gekennzeichnet, dass am Deckelelement (26, 28) Anschlüsse für die Saugleitung (47) und die Druckleitung (48) der Förderpumpe (14, 16) und/oder Anschlüsse (50) für die Leitung zum Umströmen der Förderpumpen (14, 16) und/oder Durchströmen der Wandung (18) vorgesehen sind.
- Pumpenaggregat (10) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass wenigstens ein Lagerschild (32) zur Lagerung der Antriebswelle (30) des Elektromotors (12) an der Innenseite des Innenrohres angeordnet ist.
- Pumpenaggregat (10) nach Anspruch 5, dadurch gekennzeichnet, dass auf der dem Elektromotor (12) abgewandten Seite des Lagerschilds die mit der Antriebswelle (30) des Elektromotors (12) gekoppelte Förderpumpe (14, 16) angeordnet ist.
- , Pumpenaggregat (10) nach einem der Ansprüche 3 bis 6,
dadurch gekennzeichnet, dass die Förderpumpe (14, 16) auf der Innenseite des Deckelelements (26, 28) befestigt ist. - Pumpenaggregat (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Kühlvorrichtung (68) zur Kühlung wenigstens des Teils (58) der Hydraulikflüssigkeit vorgesehen ist, die zur Umströmung der Förderpumpe (14, 16) und/oder zur Durchströmung der Wandung (18) vorgesehen ist.
- Pumpenaggregat (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Pumpenaggregat (10) als Doppelpumpenaggregat ausgebildet ist, wobei der Elektromotor (12) beidseitig jeweils ein Lagerschild und jeweils eine Förderpumpe aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004013053A DE102004013053B4 (de) | 2004-03-10 | 2004-03-10 | Pumpenaggregat |
DE102004013053 | 2004-03-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1574714A2 true EP1574714A2 (de) | 2005-09-14 |
EP1574714A3 EP1574714A3 (de) | 2006-05-03 |
EP1574714B1 EP1574714B1 (de) | 2008-01-23 |
Family
ID=34813714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05005006A Active EP1574714B1 (de) | 2004-03-10 | 2005-03-08 | Pumpenaggregat |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1574714B1 (de) |
AT (1) | ATE384874T1 (de) |
DE (2) | DE102004013053B4 (de) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013107648A1 (de) * | 2012-01-22 | 2013-07-25 | Arburg Gmbh + Co. Kg | Hydraulikeinrichtung mit einer temperiereinrichtung |
CN103590998A (zh) * | 2013-11-22 | 2014-02-19 | 北京机械设备研究所 | 一种基于永磁同步电动机的轴向柱塞液压电机泵 |
US9366114B2 (en) | 2011-04-07 | 2016-06-14 | Evolution Well Services, Llc | Mobile, modular, electrically powered system for use in fracturing underground formations |
WO2016100535A1 (en) * | 2014-12-19 | 2016-06-23 | Evolution Well Services, Llc | Mobile electric power generation for hydraulic fracturing of subsurface geological formations |
WO2017055145A1 (de) * | 2015-10-02 | 2017-04-06 | Robert Bosch Gmbh | Elektrohydraulisches kompaktaggregat |
US10107084B2 (en) | 2012-10-05 | 2018-10-23 | Evolution Well Services | System and method for dedicated electric source for use in fracturing underground formations using liquid petroleum gas |
US10378326B2 (en) | 2014-12-19 | 2019-08-13 | Typhon Technology Solutions, Llc | Mobile fracturing pump transport for hydraulic fracturing of subsurface geological formations |
CN110469502A (zh) * | 2019-09-05 | 2019-11-19 | 兰州理工大学 | 一种气隙非浸油式内啮合齿轮电机泵 |
US11255173B2 (en) | 2011-04-07 | 2022-02-22 | Typhon Technology Solutions, Llc | Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas |
US11293390B2 (en) * | 2020-05-25 | 2022-04-05 | Hyundai Motor Company | Fuel pump for a liquid fuel injection system of a motor vehicle |
US11708752B2 (en) | 2011-04-07 | 2023-07-25 | Typhon Technology Solutions (U.S.), Llc | Multiple generator mobile electric powered fracturing system |
US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005055824B3 (de) * | 2005-11-17 | 2006-11-02 | Voith Turbo H + L Hydraulic Gmbh & Co. Kg | Pumpenaggregat |
DE102006042619A1 (de) * | 2006-09-04 | 2008-03-20 | Voith Turbo H + L Hydraulic Gmbh & Co. Kg | Baugruppe für Hydraulikanlagen |
DE102019130716A1 (de) * | 2019-11-14 | 2021-05-20 | Fte Automotive Gmbh | Flüssigkeitspumpe |
US11725582B1 (en) | 2022-04-28 | 2023-08-15 | Typhon Technology Solutions (U.S.), Llc | Mobile electric power generation system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523899A (en) * | 1982-12-15 | 1985-06-18 | Ebara Corporation | Submergible motor pump assembly |
US4627793A (en) * | 1984-06-13 | 1986-12-09 | Nippondenso Co., Ltd. | Motor-driven radial plunger pump |
EP0661793A1 (de) * | 1993-12-28 | 1995-07-05 | Ebara Corporation | Motorpumpenanordnung |
EP0857871A1 (de) * | 1997-02-05 | 1998-08-12 | HOERBIGER GmbH | Hydraulisches Motorpumpenaggregat |
DE19859340A1 (de) * | 1998-12-22 | 2000-07-06 | Mannesmann Vdo Ag | Elektrohydraulische Einheit |
EP1179677A1 (de) * | 1999-04-22 | 2002-02-13 | Yuken Kogyo Kabushiki Kaisha | Hydraulikpumpe mit eingebautem elektromotor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2331917A1 (de) * | 1973-06-22 | 1975-01-23 | Hohenzollern Huettenverwalt | Pumpaggregat |
DE3839689C2 (de) * | 1988-11-24 | 1998-03-19 | Rudolf Pickel | Baukastenartig aufbaubares, elektromotorisch angetriebenes hydraulisches Pumpenaggregat |
KR19990076666A (ko) * | 1995-12-22 | 1999-10-15 | 알프레트 포이저, 게오르크 니켈 | 컴팩트 유압 유닛 |
DE19922947A1 (de) * | 1999-05-14 | 2000-11-23 | Mannesmann Ag | Antriebseinheit für hydraulische Verbraucher einzelner Bauteile einer Maschine |
DE10022174B4 (de) * | 2000-05-06 | 2007-01-18 | Kröll Hydrotechnik KG | Pumpenaggregat |
DE20220646U1 (de) * | 2002-06-04 | 2003-12-24 | Bosch Rexroth Ag | Geräuscharmes Hydraulikaggregat |
-
2004
- 2004-03-10 DE DE102004013053A patent/DE102004013053B4/de not_active Expired - Fee Related
-
2005
- 2005-03-08 EP EP05005006A patent/EP1574714B1/de active Active
- 2005-03-08 AT AT05005006T patent/ATE384874T1/de not_active IP Right Cessation
- 2005-03-08 DE DE502005002603T patent/DE502005002603D1/de active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523899A (en) * | 1982-12-15 | 1985-06-18 | Ebara Corporation | Submergible motor pump assembly |
US4627793A (en) * | 1984-06-13 | 1986-12-09 | Nippondenso Co., Ltd. | Motor-driven radial plunger pump |
EP0661793A1 (de) * | 1993-12-28 | 1995-07-05 | Ebara Corporation | Motorpumpenanordnung |
EP0857871A1 (de) * | 1997-02-05 | 1998-08-12 | HOERBIGER GmbH | Hydraulisches Motorpumpenaggregat |
DE19859340A1 (de) * | 1998-12-22 | 2000-07-06 | Mannesmann Vdo Ag | Elektrohydraulische Einheit |
EP1179677A1 (de) * | 1999-04-22 | 2002-02-13 | Yuken Kogyo Kabushiki Kaisha | Hydraulikpumpe mit eingebautem elektromotor |
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US9366114B2 (en) | 2011-04-07 | 2016-06-14 | Evolution Well Services, Llc | Mobile, modular, electrically powered system for use in fracturing underground formations |
US11939852B2 (en) | 2011-04-07 | 2024-03-26 | Typhon Technology Solutions (U.S.), Llc | Dual pump VFD controlled motor electric fracturing system |
US11913315B2 (en) | 2011-04-07 | 2024-02-27 | Typhon Technology Solutions (U.S.), Llc | Fracturing blender system and method using liquid petroleum gas |
US11708752B2 (en) | 2011-04-07 | 2023-07-25 | Typhon Technology Solutions (U.S.), Llc | Multiple generator mobile electric powered fracturing system |
US10718195B2 (en) | 2011-04-07 | 2020-07-21 | Typhon Technology Solutions, Llc | Dual pump VFD controlled motor electric fracturing system |
US11613979B2 (en) | 2011-04-07 | 2023-03-28 | Typhon Technology Solutions, Llc | Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas |
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US10227855B2 (en) | 2011-04-07 | 2019-03-12 | Evolution Well Services, Llc | Mobile, modular, electrically powered system for use in fracturing underground formations |
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Also Published As
Publication number | Publication date |
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EP1574714A3 (de) | 2006-05-03 |
DE102004013053A1 (de) | 2005-09-29 |
ATE384874T1 (de) | 2008-02-15 |
EP1574714B1 (de) | 2008-01-23 |
DE102004013053B4 (de) | 2006-07-27 |
DE502005002603D1 (de) | 2008-03-13 |
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