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
  • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
• • 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
  • F03B5/00—Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction
• • 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
  • F05B2260/00—Function
  • F05B2260/40—Transmission of power
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/20—Hydro energy

Definitions

• the invention relates to a rolling fluid turbine which consists of a cylindrical or conical stator, in which a rotor of a rotary shape, which can circulate along the inner wall of the stator, is mounted on a shaft.
• Fluid turbines based on the rolling principle consisting of a stator, usually in the shape of an inlet socket, and a rotor of a rotary shape, very often in the form of a hemisphere or cone.
• a water turbine comprising a fluid storage tank provided with an inlet and at least with one outlet nozzle, where a rolling rotor of a rotary shape is mounted on a holding device in the area of the outlet nozzle.
• This machine can work as a water turbine, when the water that flows around the rotor deviates the rotor toward the inner wall of the outlet nozzle and starts rolling it in the outlet nozzle - in the stator.
• the solution of the rolling fluid motor designed according to the Czech utility model No. 7606 Hydraulic Motor and the European patent EP1082538 Bl Hydraulic Motor can be used for the production of energy.
• the solution based on the Czech patent No. 294708 Rolling Fluid Turbine represents a rolling- type water-powered motor, with hydraulic channels arranged in the places of mutual contact between the rotor and the stator; these channels also perform the function of gearing, thus preventing rotor slip inside the stator.
• the disadvantage of the solution of the by-pass generator installed on a free-rotating crank shaft is the arrangement of the crank shaft, which has to be dimensioned extremely precisely to make sure that the rotor is rolled along the stator surface with a certain thrust and the rotor does not get far from the stator surface and does not push against it unreasonably.
• Another disadvantage of all solutions in which the shaft is installed in a free-rotating manner is that the shaft has to be fitted with a certain number of bearings to withhold the axial and radial forces affecting it as the fluid is flowing through the turbine.
• the goal of the proposed invention is an arrangement of the rolling turbine in which the method of transfer of the torque to the electricity generator is as simple as possible and efficient enough so that the transformation of the generated mechanical energy into electric power is accomplished without any transmission mechanisms and losses in the o-rings and the axial and radial forces affecting the shaft are not suppressed by a bearing or a set of bearings and could be easily retained within the stator cover.
• a rolling fluid turbine comprising a stator fitted with at least one inlet opening and at least one outlet opening.
• the stator cover and the generator fixtures Through the stator cover and the generator fixtures, the firmly attached to the generator and a rotor is arranged inside the stator; the rotor is firmly attached to one end of the rotor shaft, while the other end of the rotor shaft is, according to the invention, firmly attached to the head of a ball joint, installed on the inner side of the stator cover.
• the ball joint housing is firmly attached to the stator cover and is fitted, in the direction of the longitudinal rotor shaft, to the ball joint head, with an opening for the passage of a flexible shaft whose one end is lodged in a longitudinal cylindrical cavity located in the longitudinal axis of the ball joint head and whose other end is lodged in the longitudinal cylindrical cavity located in the longitudinal axis of the generator shaft .
• the attachment can be made by gluing, welding, sealing etc.
• the longitudinal cylindrical cavity located in the longitudinal axis of the ball joint head starts at the surface of the ball joint head and its length is 0.2 to 0.9 times the diameter of the ball joint head; the longitudinal cylindrical cavity located in the longitudinal axis of the generator shaft starts at its outer end and its length is 0.2 to 0.9 times the length of the generator shaft, located outside the generator.
• the generator is lodged using generator fixtures on the stator cover and the longitudinal axis of the generator shaft is located in the longitudinal axis of the turbine.
• the advantage of the solution according to the invention is that the electricity generator is rotated without any gearing mechanism because the flexible shaft lodged in the ball joint head as well as in the generator shaft transfers the torque between the ball joint head and the generator shaft without any greater losses.
• the flexible shaft also absorbs the precessional motion of the ball joint head, the rotor shaft and the rotor created due to the rolling of the rotor along the inner wall of the stator, which is transferred to the flexible shaft and is significantly suppressed in it.
• the rotation of the flexible shaft is accompanied by its deformation in the form of two connected arches in a specific section of its length between the ball joint head and the generator shaft.
• the first arch connected to the ball joint head is the outcome of the angular deflection of the ball joint head due to the precessional motion of the rotor shaft and the other arch, connected to the generator shaft, is the outcome of the constant longitudinal position of the generator shaft in the turbine's longitudinal axis.
• the flexible shaft is made from a plastic material, sufficiently flexible in flexure, partly flexible in tension and suitable for the transfer of the torque.
• This plastic material has the shape of a cylinder, with a diameter of 0.1 to 0.7 times the diameter of the rotor shaft, and the opening in the ball joint housing for the passage of the flexible shaft has a diameter of 0.15 to 0.75 times the diameter of the rotor shaft.
• the flexible shaft can have the shape of a steel rope that transfers the torque in the direction in which all individual strands are twisted.
• the longitudinal cylindrical cavity inside the ball joint head can be extended axially to the rotor shaft and, after a certain length under a specific angle, directed outside the rotor shaft, and its total length can be 0.2 to 0.5 times the length of the rotor shaft.
• the longitudinal cylindrical cavity in the generator shaft whose beginning is located at the outer end of the generator shaft can be directed, after a certain length under a specific angle, outside the generator shaft and its total length can be 0.2 to 0.9 times the length of the generator shaft, located outside the generator.
• each end of the flexible shaft can be arranged so that it is not flexible and does not permit the rotation of the flexible shaft inside the longitudinal cavity in the ball joint head and the rotor shaft and inside the longitudinal cavity of the generator shaft.
• the flexible shaft whose ends protrude into the free space from the rotor shaft and the generator shaft can be also fitted with auxiliary mechanisms, which are not shown, at each end to prevent its rotation inside the longitudinal cylindrical cavities, and therefore its longitudinal movement and retraction into the longitudinal cavity of the rotor shaft or the longitudinal cavity of the generator shaft.
• fig. 1 shows the first embodiment of the turbine with a ball joint according to the invention, schematically with partial cross-section in side view.
• Fig. 2 shows the second embodiment of the turbine with a ball joint according to the invention, schematically with partial cross- section in side view.
• the embodiment of the rolling fluid turbine shown in fig. 1 consists of a stator _1 provided with an inlet opening JLJ3_ for the fluid and with outlet openings JL4 for the fluid. It also consists of a rotor 2 ⁇ placed in the central section inside the stator JL, which has the form of an inlet socket in the direction from the fluid inlet opening 1_3_ to the fluid outlet openings JL_4 and which is firmly attached to the generator J7 by means of the cover 9_ of the stator JL and fixtures _8 on the generator 1_.
• the rotor 2_ is firmly attached to one end of the shaft J3 of the rotor 2_, while the other end of the shaft J3 of the rotor 2_ is firmly attached to the head of the ball joint 4_, placed on the inner side of the cover _9 of the stator JL.
• the ball joint A_ is attached to the cover £ of the stator JL firmly and the cover 9_ of the stator JL and the housing of the ball joint 4_ are provided with a conical opening JLO_ for the insertion of a flexible shaft 5_.
• the ball joint 4_ is arranged so that its head contains a longitudinal opening JL_2, and the shaft 6_ of the generator J7 i s arranged so that it contains a longitudinal opening JLJL.
• the conical opening JLJ) in the housing of the ball joint 4 has the smallest diameter 0.6 times the diameter of the shaft 3_ of the rotor :2 and the biggest diameter 0.7 times the diameter of the shaft 3_ of the rotor 2_, and in the cover 9_ of the stator 1_ it has the smallest diameter 0.7 times the diameter of the shaft 3_ of the rotor 2 ⁇ and the biggest diameter 0.9 times the diameter of the shaft 3_ of the rotor 2_.
• the flexible shaft Jj is made from a suitably flexible plastic cylinder with a diameter of 0.4 times the diameter of the shaft 3_ of the rotor 2_ and is sealed with one end in the longitudinal opening Y2_ in the head of the ball joint 4_ and sealed with the other end in the longitudinal opening 1_1 in the shaft 6 ⁇ of the generator 1_.
• the longitudinal opening 1_2 in the head of the ball joint 4_ and the longitudinal opening 1_1 in the shaft 6_ of the generator 1_ have the same diameter, i.e. 0.45 times the diameter of the shaft 3_ of the rotor 2_.
• the length of the flexible shaft 5_ is dimensioned so that when the rotor 2 ⁇ deflects toward the inner wall of the stator _1, the flexible shaft 5_ creates two connected arches in the section between the edge of the longitudinal opening _12_ in the head of the ball joint 4_ and the edge of the longitudinal opening 1_1 in the shaft 6_ of the generator 7_; through these arches, the flexible shaft 5_ absorbs the precessional motion of the rotor 2_, the shaft 3_ of the rotor 2_ and the head of the ball joint 4_.
• the rolling fluid turbine according to the invention is, unlike in the embodiment in fig. 1, provided with a longitudinal opening 1_8 passing through the whole head of the ball joint 4_ and a part of the shaft _3 of the rotor 2_ which protrudes out of the shaft 3_ of the rotor 2_. It is also provided with a longitudinal opening 1/7 passing through the shaft 6_ of the generator 1_ which protrudes from the shaft 6_ of the generator 1_.
• the longitudinal opening 18 discharges from the shaft 3_ of the rotor 2_ under an angle of 45 degrees at a distance corresponding to the diameter of the head of the ball joint 4_ and the longitudinal opening 3/7 discharges from the shaft 6_ of the generator 7_ under an angle of 45 degrees at a distance corresponding to the diameter of the shaft 6_ of the generator 7 .
• the longitudinal opening _18_ and the longitudinal opening 1/7 have the same diameter.
• the flexible shaft 5 ⁇ is made from a suitably flexible plastic material in the shape of a cylinder and its diameter is 0.75 times the diameter of the longitudinal opening 1_8 and the longitudinal opening 1/7.
• One third of the flexible shaft _5, which is partly located inside the longitudinal opening 1_8, in the direction from the end 16_ of the flexible shaft j5 that protrudes from the shaft 3_ °f tne rotor 2 ⁇ and one third of the flexible shaft _5, which is partly located inside the longitudinal opening 3/7, in the direction from the end 3J5 of the flexible shaft 5_ which protrudes from the shaft S_ of the generator 1_, are not flexible.
• the remaining third of the flexible shaft fulfills the function of torque transfer and eliminates the precessional motion of the rotor 2_, the shaft 3_ of the rotor 2_ and the head of the ball joint 4 ⁇ just like in the previous embodiment in drawing No. 1.
• Both end thirds of the flexible shaft j5 that are not flexible fulfill the function of a fixing element that disables the rotation of the flexible shaft around its own longitudinal axis inside the longitudinal opening _18_ and inside the longitudinal opening 3/7. If the fluid starts flowing through the stator 1, the rotor 2_ starts rolling along the inner wall of the stator 1_, which rotates the shaft 3_ of the rotor 2_, the head of the ball joint 4_, the flexible shaft 5_, and in turn also the shaft ⁇ _ of the generator 1_, and ultimately this results in the production of electricity.
• the rolling fluid turbine according to the invention achieved an electric output of 3.2 to 58.6W, depending on the efficiency of the electric generator used.
• the rolling fluid turbine with a ball joint according to this invention can be especially used for the production of electrical energy on very low flaw rates at a water pressure from several tenths of bar to several bar, when the torque can be transferred using a suitably selected flexible shaft.
• the simplicity of the design allows easy installation and simple deployment in places with suitable water resources.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Hydraulic Turbines (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=41434484

Family Applications (1)

Country Status (2)

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Family Cites Families (9)

• 2008
  • 2008-06-19 CZ CZ20080382A patent/CZ302309B6/cs not_active IP Right Cessation
• 2009
  • 2009-06-17 WO PCT/CZ2009/000084 patent/WO2009152785A2/en active Application Filing

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