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
• • 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
  • F05B2220/60—Application making use of surplus or waste energy
  • F05B2220/602—Application making use of surplus or waste energy with energy recovery turbines
• • 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
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B10/00—Integration of renewable energy sources in buildings
  • Y02B10/50—Hydropower in dwellings

Definitions

• the invention relates to an energy recovery device according to the preamble of the main claim.
• adjustable throttles e.g. B. Valves, slides, flaps or taps, a variable
• the implementation can advantageously be carried out by centrifugal pumps operated as turbines.
• the connection with a generator connected to the three-phase network means that the speed n of the turbine-generator unit remains approximately constant.
• the centrifugal pump operated as a turbine has a constant connection between the pressure drop ⁇ p Tu and the volume flow Q, which is reduced in the turbine, in the usual design without adjustable guide devices. This is comparable to a non-adjustable throttle device, e.g. B. an aperture.
• This disadvantage caused by the turbine characteristic curve was attempted to be eliminated by using a throttle element with an adjustable pressure drop ⁇ p.
• the arrangement consists in that when the throttle element is open to the maximum, the turbine acts as an additional pipe resistance and, as a result, as a difference between the additional power consumption for the pump generating the flow and the recovered electrical power, a net additional power consumption remains.
• the invention is therefore based on the object of developing an energy recovery device for pipelines with variable volume flow, which is provided with a control device which ensures greater energy savings and is easy to install. This problem is solved according to the characteristic
• Turbine is created. Because in this case the turbine and the upstream or the. downstream throttle element in the bypass to the parallel throttle element. This creates even less resistance than when used alone of a fully open throttle body would arise.
• the use of the two throttle bodies results in a significantly larger control range for the turbine and thus a larger energy recovery range. By installing it within a single housing, it can be integrated into an existing piping system using two simple flange connections.
• An embodiment of the invention provides that a network separation device controlled by the volume flow, the pressure difference, the slip or the torque is connected to the generator.
• Throttling elements are adjustable coupled with each other and with an actuator the simultaneous adjustment of the throttling elements takes place.
• This coupling can take place mechanically, electrically, pneumatically or hydraulically.
• a position of the throttle elements relative to one another can be selected which represents the optimum for the respective application.
• a simple adaptation to possible fluctuations within the piping system can then be carried out.
• An embodiment of the invention is shown in the drawing and will be described in more detail below.
• the energy recovery device 2 is installed in a pipe 1 symbolized by arrows for the flow direction.
• the housing 3 contains a turbine 4, a throttle element 5 connected in parallel with the turbine, a throttle element 6 connected in series with the turbine, and connecting lines 7, 8, in which the throttle elements 5, 6 are arranged.
• the turbine 4 is connected to a generator 9 which is flanged to the housing 3.
• the impeller of a reversely operated centrifugal pump in block design acts as a turbine, the turbine wheel and generator being arranged on a common shaft.
• a spiral 1 0 cast into the housing 3 is used to generate the swirl flow driving the turbine wheel.
• the energy recovery device, the throttle bodies 5, 6 are fully open.
• the pipe resistance in this state is lower than in conventional systems.
• the pipeline receiving the throttle element 5 advantageously has a cross section corresponding to the pipeline 1.
• the throttle element 5 is first partially or completely closed.
• part or all of the volume flow of the incoming pipeline now flows through the turbine 4, which now extracts energy and passes it on to a three-phase network in the form of electrical current.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
• Control Of Water Turbines (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6251447

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (6)

Citations (1)

Family Cites Families (2)

• 1984
  • 1984-11-29 DE DE19843443491 patent/DE3443491A1/de active Granted
• 1985
  • 1985-11-09 WO PCT/DE1985/000445 patent/WO1986003260A1/de unknown
  • 1985-11-09 AU AU50612/85A patent/AU5061285A/en not_active Abandoned
  • 1985-11-09 JP JP60504976A patent/JPS62500797A/ja active Pending

Patent Citations (1)

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