JP2006307821A - Power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power generation device low in plant cost and in operation cost and efficiently generating electric power independently of a state of the weather or the like by converting pressure of the liquid flowing inside a fluid transportation pipe line and kinetic energy of the flow speed into rotational movement to generate electric power. <P>SOLUTION: A power generator 2 is incorporated inside the liquid transportation pipe line 1, an impeller 3 is directly mounted on the power generator 2 and the power generator 2 is directly driven with the impeller 3 rotated by the liquid flowing in the pipe line 1 to generate electric power. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, a generator is incorporated in a fluid transport pipeline, and the impeller of the generator is rotated using the energy of fluid (hereinafter referred to as liquid) flowing through the fluid transport pipeline, and the generator is rotated by this rotation. The present invention relates to a power generator that is driven to generate power.

  For example, in facilities such as public facilities, large stores, hotels, condominiums, various factories, etc., there are many fluid transport pipelines through which various liquids flow at a predetermined flow rate. Specific examples of fluid transport pipelines include water supply pipes , Drain pipes, cooling water pipes, cleaning water pipes, plant pipes, and the like.

  Usually, the liquid sent through these fluid transport pipelines is used for water supply, drainage, cooling water, washing water, and other purposes, and in recent years it flows inside such fluid transport pipelines. Focusing on the kinetic energy of the liquid, a power generation device that drives the generator with the kinetic energy of the liquid has been proposed.

  Conventionally, as shown in FIG. 5 (a), an apparatus for generating electricity using the liquid in the fluid transport pipe is provided inside the fluid transport pipe 21 so as to open the partition wall 22 to the outside. The impeller 24 rotated by the fluid flowing in the fluid transport pipe 21 is fixed to the rotary shaft 23 supported by the generator 25, and the generator 25 and the rotary shaft 23 arranged outside the fluid transport pipe 21 are connected to a pulley, a V belt, or the like. Power is generated by interlocking with the rotation transmission mechanism 26 and transmitting the rotation of the rotating shaft 23 by the impeller 24 to the generator 25 (see, for example, Patent Document 1).

  Separately from this, as shown in FIG. 5 (b), a through shaft 27 of the fluid transport pipe 21 and a rotation shaft 28 located in the fluid transport pipe 21 are arranged at right angles, A rotating shaft 28 is interlocked by a right angle gear 29, and an impeller 30 that rotates with a fluid flowing in the fluid transport pipe 21 is fixed to the tip of the rotary shaft 28, and a generator 31 disposed outside the fluid transport pipe 21. In some cases, the through shaft 27 is interlocked, and the rotation of the rotary shaft 28 by the impeller 30 is transmitted to the generator 31 through the right-angle gear 29 and the through shaft 27.

See Patent Document 1

  JP 2004-225533 A

  By the way, since the rotational energy generated in the impeller is indirectly transmitted to the generator in the power generator as described above, energy loss occurs in the middle and the rotational energy is significantly transmitted to the generator. Therefore, there is a problem that the power generation efficiency deteriorates accordingly.

  Therefore, an object of the present invention is to reduce the energy loss by incorporating a generator inside the fluid transport pipe, attaching the impeller directly to the rotating shaft of the generator, and transmitting the rotational energy generated by the impeller directly to the generator. It is an object of the present invention to provide a power generator that can dramatically improve power generation efficiency.

  In order to solve the above-described problems, the invention of claim 1 is directed to power generation in which an impeller is rotated by a fluid flowing in the fluid transport pipe and power is generated by the rotation of the impeller. A configuration is adopted in which a machine is incorporated and the electric power generated by the generator is taken out of the fluid transportation pipeline.

  According to a second aspect of the present invention, in the first aspect of the invention, a configuration is adopted in which a plurality of generators are arranged at predetermined intervals along the fluid flow direction in the fluid transport pipe.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the position of the portion corresponding to the impeller of the generator in the middle of the fluid transport conduit increases the flow velocity of the fluid with respect to the impeller. The structure which becomes is adopted.

  Here, as the above-mentioned fluid transport pipeline, in addition to water supply and drainage pipes and plant piping in the facilities of various factories, as well as this, fluid transport pipelines through which liquid flows are used in construction sites, water supply facilities, public facilities, Water supply pipes, drain pipes, cooling water pipes, cleaning water pipes, hot water supply pipes, etc. for stores, hotels and condominiums can be mentioned.

  According to the present invention, since the generator is incorporated in the fluid transport pipe and the generator is directly driven by the impeller that is rotated by the liquid flowing in the pipe, the fluid transport pipe is used. The kinetic energy of the liquid flowing in the interior of the motor can be converted into the rotational motion of the impeller, and the generator can be directly driven, so that no energy loss is generated and the power generation efficiency can be dramatically improved.

  In addition, since the generator impeller is rotated by the liquid flowing through the fluid transport pipeline, the original supply and drainage functions of the fluid transport pipeline are not obstructed at all, and it can be cleaned at low cost from any part of the fluid transport pipeline. Power can be obtained.

  Further, by storing the generator in the fluid transport pipeline, a cooling effect by the liquid can be obtained for the generator, and the durability of the generator can be improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows a basic configuration of a power generation method using a power generation apparatus of the present invention. A rocket-type generator 2 is incorporated in a fluid transport pipe 1 through which a liquid flows, and the generator 2 includes the inside of the pipe 1. An impeller 3 that is rotated by a flowing water flow is provided, and the generator 2 is directly driven by the rotation of the impeller 3 to generate electric power, and the generated electric power is taken out of the fluid transport pipeline 1. It is.

  In FIG. 2, the fluid transport pipe 1 is provided with a bypass pipe 1b in which the inlet end and the outlet end communicate with the main pipe 1a which is vertical, and the generator 2 is provided in the middle of the bypass pipe 1b. On-off valves 4, 5 and 6 are respectively provided at the downstream side of the inlet side end and the outlet side end of the bypass pipe 1 b and the inlet side end where the bypass pipe 1 b of the main pipe 1 a branches.

  As shown in FIG. 3, the generator 2 has a cylindrical casing 7 that is vertically smaller than the inner diameter of the bypass pipe 1 b and is fixed in a coaxial arrangement with the bypass pipe 1 b by a plurality of mounting brackets 8. A spindle part that secures a liquid flow space between the tube 1b and the casing 7, houses a fixed coil, a rotating coil, etc. necessary for power generation inside the casing 7, and reduces the resistance of water flow at the upper end of the casing 7 The impeller 3 such as a screw is directly attached to the rotating shaft 10 of the rotating coil protruding from the lower end of the casing 7.

  The generator 2 is driven by rotating the impeller 3 by a water flow, and the electric power generated by the generator 2 is taken out of the bypass pipe 1b by a cord 11 penetrating the bypass pipe 1b in a watertight manner. .

  Incidentally, the generator 2 has a diameter of 80 mm and a length of 500 mm, and reduces the generation of resistance to water flow by using a rocket type.

  In the bypass pipe 1 b, the position of the portion corresponding to the impeller 3 of the generator 2 is a venturi structure portion 12 in which a part of the pipe diameter is narrowed in order to increase the flow velocity of the fluid with respect to the impeller 3. .

  Although not shown, swirl vanes that rotate the water flow may be provided on the inner diameter of the venturi structure portion 12.

  The electric power generated by the generator 2 is stored in the power storage device 14 via, for example, a rectifier or the control device 13 and converted into alternating current by the inverter 15 to be used as a power source for various electric devices, lighting, construction site devices, and the like.

  Here, the fluid transport pipe 1 is connected to a cooling water pipe of various factories, an industrial water pipe, a drain pipe, a drain pipe of a condominium, a hotel, a large building, and a water receiving tank for storing pumped water. A water supply pipe etc. can be mentioned.

  In the example shown in FIG. 2, a plurality of generators 2 are arranged in a series of multistages at predetermined intervals along the fluid flow direction inside the bypass pipe 1b that is vertically arranged, and the fluid flow energy is effective. It is intended to be used.

  In the example shown in FIG. 4, a horizontal bypass pipe 1 b is provided in a horizontal main pipe 1 a to which liquid is pumped by a pump, and a plurality of generators 2 are incorporated in the bypass pipe 1 b.

  The power generator of the present invention is configured as described above. When the on-off valves 4 and 5 are opened to close the on-off valve 6 of the main pipe 1a and a fluid is passed through the bypass pipe 1b, the impeller 3 is rotated by the water flow. When the impeller 3 drives the rotating coil, power is generated in the generator 2, and the electric power generated by the generator 2 is used as a power source for various electric devices, lighting, construction sites, and the like.

  Since the generator 2 is immersed in the fluid flowing through the bypass pipe 1b, the cooling effect is improved, the durability is dramatically increased, and the impeller 3 is directly fixed to the rotating shaft 10 of the generator 2. Therefore, the transmission efficiency of rotation is very good. By directly transmitting the rotational energy generated in the impeller 3 to the generator 2, there is no energy loss and efficient power generation is possible. By arranging them in this way, the power generation capacity can be further greatly improved.

Longitudinal front view showing the basic structure of the power generator of the present invention Longitudinal front view showing the power generator of the present invention Longitudinal front view enlarging the main part of the power generator, (b) is a cross-sectional plan view The perspective view which shows the other example of the electric power generating apparatus with which a fluid conveyance pipe line becomes horizontal (A) is a longitudinal front view showing a conventional power generator using a fluid transportation pipeline, and (b) is a longitudinal front view showing another example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fluid transport line 2 Generator 3 Impeller 4, 5, 6 On-off valve 7 Casing 8 Mounting bracket 9 Spindle part 10 Rotating shaft 11 Cord 12 Venturi structure part

Claims (3)

  An impeller is rotated by the fluid flowing in the fluid transport conduit inside the fluid transport pipeline, and a generator that generates electric power by the rotation of the impeller is incorporated, and the electric power generated by the generator is supplied to the fluid transport conduit. A power generator characterized by being taken out to the outside.   The power generator according to claim 1, wherein a plurality of generators are arranged in the fluid transport pipe line at a predetermined interval along a fluid flow direction.   The position of the part corresponding to the impeller of a generator in the middle of the said fluid conveyance pipe line is a venturi structure which makes the flow velocity of the fluid quick with respect to an impeller. Power generator.

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