JP2016050575A - Turbine for hydraulic power generation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly efficient and universal hydraulic power generation turbine considering a marine organism and environment in high generating efficiency and a high durability at a low cost and corresponding to any flow water environment from low to high speeds.SOLUTION: A hydraulic power generation turbine is made to correspond to all flow speed environment by deforming a floating shaft having a buoyance in a transverse rotary shaft itself and variable aspect ratio turbine blades and increasing and decreasing the number of the turbine blades, and to absorb the impact at the collision time of a large-sized migration creature through the three-dimentional shape and universal joint, so that the turbine is highly efficient and low cost even in extremely rigid and simple structure, and is versatile.SELECTED DRAWING: Figure 1

Description

  The present invention is widely used for hydroelectric power generation such as ocean currents, tidal currents, wave powers, rivers, etc., and is highly efficient, high power, high durability, low cost, and compatible with marine life, etc. Is a universal, highly durable and highly efficient hydroelectric turbine.

  In recent years, hydropower and offshore power generation have attracted attention as new energies because of their high potential, but there are still many research issues left. A particular problem is how to make a highly efficient turbine.

  Many of the turbines currently being studied are of the propeller type, but some special ones have a shape like a rugby ball-shaped shaft with a turbine blade or a geometric shape that makes a turbine blade from a single steel plate. There are things with a nice design.

  However, some turbine blades are too large in diameter (80m), cannot be used in low-speed basins, are uneasy about the strength when colliding with large marine organisms, drifting algae, remnants of nets, driftwood, etc. There are also problems such as the shape in which objects are easily tangled.

  It also has a number of challenges, such as impact on vessel navigation, environmental considerations, fishing rights issues, and it must be cheap and durable.

JP 2012-41920 A JP2013-217332A JP 2013-19387 A JP 2014-37805 A

  The problems to be solved by the present invention are high power generation efficiency, high durability, consideration for the environment such as marine organisms, versatility corresponding to all flowing water environments from low speed to high speed, and low manufacturing costs.

  In a hydroelectric power generation turbine having a plurality of turbine blades mounted substantially perpendicularly and spirally in the lengthwise direction of the horizontal rotating shaft, the weight of the entire hydroelectric power generating turbine and the hollow included in the horizontal rotating shaft itself The buoyancy obtained by the structure is balanced by adjusting the diameter, length, and shape of the horizontal rotation shaft, and while maintaining a stable posture, it is possible to generate electricity without applying harmful stress load to the horizontal rotation shaft It is a turbine for hydroelectric power generation.

  The shape of the turbine blade is such that the dorsal fin of the dolphin is curved, and the aspect ratio of the turbine blade cross-sectional projected area in the first stage of flow entry (1a, 2a, 3a) is a very small and elongated crescent moon, which makes the turbine blade The running water resistance of the previous period is kept extremely small, and even if it is weak running water, it will rotate and start up reliably. On the other hand, the aspect ratio of the projected area of the turbine blade cross section in the late flow entry period (1b, 2b, 3b) is extremely large and wide. As a result, the flow resistance becomes extremely large, and a strong rotational torque is given to the shaft. In other words, the flow resistance in the first half is extremely small, and the flow resistance in the second half is intermittently extremely large, so that it can rotate reliably even with slow and weak running water, and at the same time has a unique shape that can generate strong rotational torque. It is an aspect ratio turbine blade.

  The characteristics of the turbine blades are that they are thin for high-speed rotation and widely deformed for low-speed rotation, and the number of turbine blades can be arbitrarily increased or decreased to 3, 4, or 5, regardless of the environment or flow rate. It is a universal and highly efficient hydroelectric turbine.

  The horizontal rotating shaft of the hydroelectric power generation turbine is connected to the upstream side of the horizontal rotating shaft by a universal joint and freely movable, and the horizontal rotating shaft that is directly connected to the power generation input shaft and has no hollow structure and no buoyancy. This is a turbine for hydroelectric power generation that has various features and can be used properly depending on the situation.

  The hydroelectric power generation turbine rotates in a three-dimensional flask shape with few protrusions, and the universal joint absorbs the impact at the time of collision even if a large migratory organism collides. In addition, algae entering the turbine blades are less likely to get entangled, and fish are also quickly drained and less likely to be damaged.

  The turbine for hydroelectric power generation has a very simple structure and a very small number of parts, and the floating cylindrical portion of the horizontal rotating shaft can also use standard steel pipes, resulting in high cost performance.

FIG. 1 is an elevational view. FIG. 2 is a front view and a cross-sectional projection view of a turbine blade having an A1-A2 fracture surface. FIG. 3 is a development view of the turbine blade.

  Turbine for hydroelectric power generation in which a turbine blade having the shape shown in the developed view of FIG. 3 is curved in the latter half of the warp and is spirally arranged on a horizontal rotating shaft in which a floating joint of 4 is attached to a floating body of 4 .

  The horizontal rotating shaft 4 itself is hollow and is a cylindrical floating body having buoyancy. The diameter, length, and shape of the four horizontal rotation shafts are adjusted and designed so as to always balance buoyancy according to the weight of the entire turbine.

  Five universal joints are attached to the four horizontal rotation shafts. When the 4 horizontal rotation shafts are the same as the input-side horizontal rotation shaft, the 5 universal joint is not attached, and the turbine blades 1 to 3 are directly attached to the input-side horizontal rotation shaft. At this time, the four horizontal rotation shafts and the input side horizontal rotation shaft are not hollow structures and have no buoyancy.

  In the turbine blade, the projections of the A1-A2 fracture surface B in FIG. 1 are 1a, 2a, and 3a in FIG. Further, in the turbine blade, the projections of the fracture surface C1-A2 in FIG. 1 are 1b, 2b, and 3b in FIG. Moreover, the length of B and C is the same.

1 Turbine blade 1
2 Turbine blade 2
3 Turbine blade 3
4 Floating shaft 5 Universal joint clamp A1 Fracture surface A2 Fracture surface 1a Projection view of A1-A2 fracture surface B of turbine blade 1 2a Projection view of A1-A2 fracture surface B of turbine blade 2 3a A1-A2 of turbine blade 3 Projection view of fracture surface B 1b Projection view of A1-A2 fracture surface C of turbine blade 1 2b Projection diagram of A1-A2 fracture surface C of turbine blade 2 Projection view B of A1-A2 fracture surface C of turbine blade 3 The length of the turbine blade in the first stage of approach, B and C are the same length C The length of the turbine blade in the second stage of flow approach, and B and C are the same length

Claims (3)

  In a hydroelectric power generation turbine having a horizontal rotating shaft and a plurality of turbine blades mounted substantially vertically and spirally in the longitudinal direction of the horizontal rotating shaft, the weight of the entire hydroelectric power generating turbine, The buoyancy obtained by the hollow structure of the rotary shaft itself is balanced by adjusting the diameter, length and shape of the horizontal rotary shaft, and a harmful stress load is applied to the horizontal rotary shaft while maintaining a stable posture. Turbine for high-efficiency hydroelectric power generation that can generate electricity.   The shape of the turbine blade of the hydroelectric turbine is such that the dolphin's dorsal fin is curved, and the aspect ratio of the turbine blade cross-sectional projected area in the first stage of flow entry (1a, 2a, 3a) is extremely small and elongated crescent. As a result, the flowing water resistance in the first stage of the turbine blade is suppressed to a very small value, and even if it is weak flowing water, it rotates reliably and starts up. On the other hand, the aspect ratio of the projected area of the turbine blade cross section in the late flow entry period (1b, 2b, 3b) is extremely large and wide. As a result, the flow resistance becomes extremely large, and a strong rotational torque is given to the shaft. That is, it is a variable aspect ratio turbine blade having a unique shape capable of reliably rotating even with slow and weak flowing water and generating a strong rotational torque. Further, the shape of the turbine blade is thin for high-speed rotation and widely deformed for low-speed rotation, and the number of turbine blades can be arbitrarily increased or decreased to 3, 4, or 5 for any environment or flow velocity. However, the turbine for hydroelectric power generation according to claim 1, which is versatile and highly efficient.   The horizontal rotation shaft of the hydroelectric power generation turbine is connected to the power generation input shaft directly connected to the power generation input shaft on the upstream side of the horizontal rotation shaft, and has a hollow structure and no buoyancy. The turbine for hydroelectric power generation according to claim 1, wherein the turbine is characterized in that there are two kinds of

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