WO2015087174A1 - Agencement de moteur hydraulique - Google Patents
Agencement de moteur hydraulique Download PDFInfo
- Publication number
- WO2015087174A1 WO2015087174A1 PCT/IB2014/065408 IB2014065408W WO2015087174A1 WO 2015087174 A1 WO2015087174 A1 WO 2015087174A1 IB 2014065408 W IB2014065408 W IB 2014065408W WO 2015087174 A1 WO2015087174 A1 WO 2015087174A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic motor
- motor arrangement
- housing
- rotor assembly
- arrangement according
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 230000002262 irrigation Effects 0.000 claims abstract description 4
- 238000003973 irrigation Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/20—Application within closed fluid conduits, e.g. pipes
Definitions
- This invention relates to a hydraulic motor, and more particularly to a hydraulic motor arrangement suitable for installation within a pipeline network, such as a water supply network or any other network which provides hydraulic pressure.
- a hydraulic motor comprises a mechanical actuator that converts hydraulic pressure and flow into torque and linear or rotary displacement.
- Various hydraulic motors or hydromotor types are known, including gear and vane motors, gerotor motors, axial plunger motors, and radial piston motors.
- Free-flowing rivers, waterfalls and the like provide suitable means for providing such pressure required to actuate and operate the hydraulic motor. In these instances, very little additional energy input, if any, is required to provide the hydraulic pressure.
- Water supply networks also provide a source of hydraulic pressure. In particular, the gravitational water pressure of water supply networks in mountainous areas provides a useful source of hydraulic pressure. This has lead to the development of hydroelectricity, wherein water supply networks can be utilized for purposes of electricity generation.
- a common disadvantage of known hydraulic motors is that when flow of a pressurized liquid, typically water, is interrupted, it causes a drop in pressure, in particular to downstream users.
- a hydraulic motor arrangement operable within a pipeline network comprising:
- a rotor assembly disposed between the inlet and outlet, the rotor being drivable by the flow of liquid along the flowpath; and - means for reducing pressure proximate one side of the rotor assembly to operatively facilitate rotation of the rotor assembly.
- the invention further provides for the means for reducing pressure to include one or more bypass lines extending from proximate the rotor assembly to proximate the outlet of the housing.
- bypass lines are provided downstream in the flowpath of the rotor assembly.
- the invention provides for the inlet to be located at a first side of the housing and the one or more bypass lines to be located at a second opposing side of the housing.
- the invention further provides for the one or more bypass lines to include a bypass inlet extending from the second side of the housing to a bypass outlet provided at the first side of the housing proximate the outlet.
- bypass inlets of the one or more bypass lines are spaced radially along the second side of the housing.
- the one or more bypass lines may be provided with a control valve.
- the rotor assembly to include a rotor shaft having a plurality of vanes shaped to locate substantially flush within the housing to provide minimal clearance between a periphery of the vanes and the housing.
- the vanes may have a concave operative surface.
- the inlet to include a nozzle, and for the nozzle to operatively direct the flow of water to the rotor assembly.
- the invention further provides for the hydraulic motor arrangement to include a mount for supporting the housing.
- a further aspect of the invention provides for the rotor assembly to provide a drive for the generation of electricity or mechanical work for an irrigation system.
- the invention further provides for the inlet and outlet to include couplings for installing the arrangement in-line within a closed pipeline of a water supply network, alternatively as a bypass line in the pipeline.
- Figure 1 is a front perspective view of a hydraulic motor arrangement according to the invention
- Figure 2 is a back perspective view of the hydraulic motor arrangement of Figure 1
- Figure 3 illustrates a top view of the hydraulic motor arrangement shown in
- Figure 4 is a sectional front view of the hydraulic motor arrangement as seen along line A-A 1 in Figure 3;
- Figure 5 shows a sectional detail view of B shown in Figure 4.
- Figure 6 is an exploded perspective view of the hydraulic motor arrangement according to the invention.
- a hydraulic motor arrangement in accordance with the invention is generally indicated by reference numeral 10.
- the hydraulic motor arrangement 10 includes a housing 12.
- the housing 12 is of a cylindrical shape and includes an inlet 14 and an outlet 16 to define a flowpath for liquid, such as water, therethrough.
- the inlet 14 and outlet 16 are joined to the housing 12 by complementary flanges 18 and includes suitable sealing (not shown) where required.
- Suitable couplings 20 as shown are provided for installation in a water supply network (not shown).
- the hydraulic motor arrangement 10 may be installed inline within a closed water pipeline or alternatively as a bypass line in such pipeline.
- suitable valves may be installed in the pipeline to enable the user to selectively direct the water flow through the hydraulic motor arrangement or, when not required, to close off the arrangement to provide the flow through the pipeline only.
- the installation of the hydraulic motor arrangement 10 within the water supply network will be within the competence of a worker skilled in the art and in accordance with the requirements of a particular installation.
- the inlet 14 includes a nozzle 22 for operatively directing the flow of water towards a rotor assembly 24.
- the reduced diameter size of the nozzle 22 also ensures an increased water pressure directed to the rotor assembly 24.
- the rotor assembly 24 includes a rotor shaft 26 arranged in the housing 12 with suitable bearings (not shown) to enable rotation of the rotor shaft 26 inside the housing 12.
- the rotor shaft 26 includes a plurality of vanes 28 which is operatively driven by the flow of water along the flowpath from the inlet 14 to the outlet 16.
- the direction of rotation of the vanes 28 is indicated by the arrows shown in Figure 4.
- the location of the nozzle 22 at a first side 30 of the housing 12 directs the water flow to the operatively lower vanes 28 to facilitate the correct direction of rotation of the vanes 28 and rotor shaft 26.
- the location of the nozzle 22 also contributes to increased pressure at the lower vanes 28.
- the vanes 28 are sized to fit substantially flush within the housing to provide a minimal clearance with the walls of the housing 12. This ensures optimal contact of the vanes 28 with the water flow, but still allowing rotation of the rotor assembly 24 within the housing 12 to utilise the water pressure as best as possible.
- concave indentations 32 in the vanes 28 are provided to increase the contact surface of the vanes 28 with the water.
- the rotor shaft 26 of the rotor assembly 24 is connected to a pulley 34 which is operatively driven by the rotor shaft 26, which drive can be used for any useful purpose, including electricity generation.
- a means for reducing pressure proximate side 36 At a second side 36 of the housing 12 there is provided a means for reducing pressure proximate side 36.
- This means is provided in the form of a bypass line 38.
- the bypass line 38 forms a secondary passage of water through a bypass inlet 40 to a bypass outlet 42.
- the bypass outlet 42 is located at the outlet 16 of the housing 12 at the first side 30 (opposite the second side 36).
- three bypass lines 38 are provided and arranged radially at various positions along the second side 36 of the housing. This arrangement increases the operative area in which the pressure is reduced.
- the hydraulic motor arrangement 10 also includes a mount 44 to support the arrangement 10 or for mounting the arrangement 10 within the water supply network as the case may be.
- pressurised water flows via the inlet 14 though the nozzle 22 into the housing 12.
- the water contacts the vanes 28 and drives the rotor shaft 26 which in turn drives the pulley 34.
- bypass lines 38 have been introduced to reduce the water pressure in the upper level of the housing 12, thus enabling the rotor assembly 24 to turn in the direction of the arrow illustrated in Figure 4.
- the location of the nozzle 22 as described above also facilitates turning of the rotor assembly 24.
- a pressure gradient between the upper level and lower level is operatively formed which facilitates the operation of the rotor assembly 24.
- a decrease in pressure in the upper level of the housing 12 will result in an increase of pressure in the lower level. Therefore, the more the pressure in the upper level of the housing 12 is reduced, the faster the rotor assembly 24 will turn.
- a plurality of bypass lines 38 are provided. These bypass lines 38 are arranged radially as mentioned above, to ensure that the pressure is reduced along a larger area of the second side 36.
- bypass lines 38 are also disposed downstream of the rotor assembly 24. This ensures a reduction of pressure in the area above and downstream of the rotor assembly 24 i.e. directly below the bypass lines 36 as shown in the drawings. This area has been identified as the preferred area in which the water pressure should be reduced to ensure optimal functioning of the system.
- the bypass lines 38 will be provided with control valves 46 which regulate the pressure in the bypass lines 38 according to specific requirements of a particular installation. These control valves 46 may be furthermore controlled by an electronic system (not shown) if required.
- the arrangement will also enable the pressure of the closed pipeline system to remain substantially constant.
- the pressure calculated upstream of the hydraulic motor arrangement will be substantially similar to the downstream pressure.
- This arrangement therefore utilizes pressure provided in a closed line system without a substantial reduction of the overall pressure in the system.
- the drive on the pulley may be utilized in any convenient manner which includes the generation of electricity or for use in an irrigation system, or any other useful mechanical work which can be derived from the drive from the pulley.
- the invention will be particularly useful in mountainous areas where the water pressure of the closed pipeline system is increased by gravity.
- the abovementioned disadvantage is at least partially alleviated or overcome by the hydraulic motor arrangement in accordance with the invention.
- the disadvantage of a resulting decrease in downstream pressure when a hydraulic motor is inserted into a pressurised liquid supply, such as a water network supply is at least partially overcome by the hydraulic motor assembly according to the invention being able to be installed in the pressurized water supply without causing a significant decrease in downstream water pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
Abstract
L'invention porte sur un agencement de moteur hydraulique (10), lequel agencement peut fonctionner à l'intérieur d'une conduite, par exemple dans un réseau d'alimentation en eau. L'agencement de moteur hydraulique (10) comprend un boîtier ayant une entrée (14) et une sortie (16) produisant une trajectoire d'écoulement pour de l'eau à travers ce dernier ; un ensemble de rotor (24) disposé entre l'entrée (14) et la sortie (16), le rotor pouvant être entraîné par l'écoulement d'eau le long de la trajectoire d'écoulement ; et des moyens pour réduire une pression à proximité d'un côté de l'ensemble de rotor pour faciliter la rotation de l'ensemble de rotor (24). L'entrée comprend une buse (22) pour diriger l'eau vers un côté fonctionnellement inférieur de l'ensemble de rotor (24). Les moyens pour réduire la pression sont agencés sous la forme d'une pluralité de lignes de dérivation (38) situées en aval de l'ensemble de rotor (24) et sur un côté opposé à la buse (22). L'entraînement de l'ensemble de rotor (24) peut être utilisé pour générer de l'électricité pour produire un travail mécanique pour l'utilisation, par exemple, dans un système d'irrigation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2013/09277 | 2013-12-09 | ||
ZA201309277 | 2013-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015087174A1 true WO2015087174A1 (fr) | 2015-06-18 |
Family
ID=53370685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2014/065408 WO2015087174A1 (fr) | 2013-12-09 | 2014-10-17 | Agencement de moteur hydraulique |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2015087174A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1386069A (en) * | 1920-10-06 | 1921-08-02 | Sr Hans Mortensen | Water-power system |
US4731545A (en) * | 1986-03-14 | 1988-03-15 | Desai & Lerner | Portable self-contained power conversion unit |
US20100140935A1 (en) * | 2006-11-10 | 2010-06-10 | Joseph Paoli | Reversible hydroelectric device |
-
2014
- 2014-10-17 WO PCT/IB2014/065408 patent/WO2015087174A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1386069A (en) * | 1920-10-06 | 1921-08-02 | Sr Hans Mortensen | Water-power system |
US4731545A (en) * | 1986-03-14 | 1988-03-15 | Desai & Lerner | Portable self-contained power conversion unit |
US20100140935A1 (en) * | 2006-11-10 | 2010-06-10 | Joseph Paoli | Reversible hydroelectric device |
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