JP2003314428A - Wind power generation equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wind power generation equipment allowing wind force to be effectively utilized for the rotating force of an impeller, which copes with an increase in a power generating capacity, eliminates the necessity of increasing the support part of the impeller, easily facilitates an equipment maintenance, and suppresses a construction cost. <P>SOLUTION: This wind power generation equipment comprises the impeller 1 having a rotating shaft positioned in vertical direction and a generator 5 connected to the impeller 1. To effectively utilize the wind force, gutter-like members of chevron shape in cross section having one end part internal angle of generally 30° and the other end part internal angle of generally 30 to 45° are vertically disposed at the major part of the main wind receiving part 1b of the impeller 1 through the clearance thereof from a shaft part 1a. To hold the part 1b, a slender wind receiving material holding part 1c projected from the shaft part 1a is disposed at least near both end parts of the portion 1b. To rotatably self stand the impeller 1 only by the lower pivotally supporting of the shaft part 1a, the impeller is supported by the pivotally supporting part of the rotatable shaft part 1a and the outer annular pivotally supporting part of the outer side annular member 1d at a clearance from the shaft part 1a on the floor surface of a support frame 6 through a pivotally supporting material 4. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an impeller having a rotating shaft which is operated by wind power and having a vertical axis, and a generator which is operated by the rotating force of the impeller. It relates to a wind power generator. 2. Description of the Related Art Conventionally, wind power generators are roughly classified into a type in which a rotating shaft of an impeller is in a horizontal direction and a type in which a rotating shaft of an impeller is in a vertical direction. The characteristic of the so-called propeller type, in which the rotating shaft of the impeller is in the horizontal direction, is that in order to increase the power generation capacity, it is necessary to rely on a large rotating radius of the impeller. It is necessary to increase the height in conjunction with the radius and also to increase the height of the support within a range that does not hinder the horizontal rotation of the impeller. For this reason, the shape of the pillars is elongated and it is not easy to secure the strength as the pillars, and it is necessary to make the height very high to secure large-scale power generation capacity, and the construction cost is also high and The maintenance of the impeller has many problems to be solved from the viewpoint of equipment maintenance such as work at a high place. On the other hand, as a feature of the system in which the rotation axis of the impeller is in the vertical direction, the height of the support portion can be reduced because it does not link with the rotation radius of the impeller, but the wind receiving surface of the impeller can reduce the wind. Not only can it be received from the back, it also receives wind from the front evenly and when the wind receiving surface is continuously projecting from the shaft, the wind force near the shaft is effective for the rotating force of the impeller Since only the horizontal force increases without contributing to the wind, it is necessary to devise a shape that effectively contributes the wind from the back as a rotational force and reduces the resistance of the wind from the front.
Also, when the rotation of the impeller becomes faster and the speed of the main wind receiving surface exceeds the wind speed occurs, the wind from the back also becomes a resistive force, so the rotation radius of the impeller cannot be expanded unnecessarily. In order to increase the capacity, it is necessary to increase the area of the main wind receiving surface of the impeller in the vertical direction to cope with it. In order to solve the problem by supporting the rotating shaft from above and below, if a supporting frame is provided on the outer periphery of the rotating body, a robust frame is required, which causes an increase in construction cost in this aspect Will be done. For this reason, in wind power generation, wind power can be effectively used for the rotational force of the impeller, which can cope with an increase in power generation capacity, and equipment maintenance can be easily performed without the need to increase the support of the impeller. There is a need for a proposal of a wind power generator that can also reduce construction costs. [0003] The present invention has been made in view of the above-mentioned prior art, and in wind power generation, wind power can be effectively used for the rotation force of an impeller to increase the power generation capacity. It is an object of the present invention to provide a wind power generator that can cope with the problem, does not require a high support portion of the impeller, facilitates equipment maintenance, and can reduce construction costs. [0004] In order to achieve the above object, a wind power generator of the present invention is operated by wind power and has an impeller whose rotation axis is in a vertical direction, and is operated by the rotational force of the impeller. A wind power generator comprising: a main wind receiving portion having an inner angle of about 30 degrees at a main portion of a main wind receiving portion so that the impeller effectively captures a tail wind and reduces a resistance of a head wind. A gutter-like member having a cross-section similar to a mountain-shaped section or an elliptical part-shaped section in contact with the mountain-shaped end and the apex is formed between the other end and the rotation axis. The elongate wind receiving material holding portion, which is disposed in the vertical direction with a gap provided therebetween and is radially protruded in a direction perpendicular to the axial direction from the rotary shaft portion to hold the main wind receiving portion, is at least the main wind. Located near both ends of the receiving part In order to allow the impeller to be self-supporting and rotatable only by the support below the rotating shaft, an annular ring is formed outside the rotating shaft at a distance from the shaft bearing and the rotating shaft. It is characterized in that it is supported on the floor of the support gantry via a bearing support member by an outer ring bearing at the lower part of the part. An embodiment of a wind turbine generator according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view illustrating a wind power generator according to the present invention, FIG. 2 is a plan sectional view of an example of an impeller of the present wind power generator, and FIG. 3 is an example of a shape of a main wind receiver of the wind power generator. , FIG. 4 is a cross-sectional view of an example of a rotary bearing of the impeller of the present wind power generator, and FIG. 5 is a side view of an example of a transmission mechanism of the rotational force of the impeller of the present wind power generator to the generator. . As shown in FIG. 1, the wind power generator of the present invention is installed on a floor of a gantry 6 and the like so as to be rotatable, is operated by wind power, and has a rotating shaft in a vertical direction.
And a generator 5 operated by the rotational force of the wind turbine. The impeller 1 has three or more blade portions, and the impeller 1 has an inner angle of about 30 degrees at one end as shown in FIG. 3 in order to effectively catch the tailwind and reduce the resistance of the headwind. The main wind receiving portion 1b, which is a gutter-shaped member having a cross-section similar to a mountain-shaped portion or an elliptical portion in contact with the mountain-shaped end and the apex, has a cross section having an inner angle of about 30 to 45 degrees at the other end. As shown in FIG. 2, a gap is provided between the rotary shaft and the shaft. The gap size is set to be about 20 mm or more and about 1/3 to 1/4 of the width of the main wind receiving portion. In addition, it is preferable to provide a horizontal horizontal reinforcing portion 1f at an appropriate position at a horizontal end portion and an intermediate portion together with a vertical reinforcing portion 1e at a vertical end portion for reinforcement on the back surface of the portion 1b. Then, as shown in FIGS.
In order to hold the main wind receiving portion 1b, at least near both ends of the main wind receiving portion 1b, an elongated wind receiving material holding portion 1c which is orthogonal to the rotating shaft portion 1a in the axial direction and protrudes radially is provided. In addition, as shown in FIG. 3, the impeller 1 and the shaft support 2 of the rotatable rotating shaft 1a are rotatable only by the support below the rotating shaft 1a. Outer ring support 3 at the lower portion of annular portion 1d that forms an outer ring at an interval from 1a
Thus, it is supported on the floor of the support base 6 via the support member 4. The main parts related to this wind turbine are
Details that should be particularly noted in addition to the devices and the like will be described. The impeller 1 may be made of a material such as a metal or alloy such as iron, stainless steel, or titanium, a high-strength plastic such as polycarbonate, epoxy, or polyamide, or a fiber-reinforced plastic such as carbon fiber. It is not limited to the above examples as long as a high-strength material is used and the object of the present invention can be achieved. Further, the scale and detailed dimensions are appropriately set based on the required power generation capacity. It is preferable to reduce the weight of the rotating shaft 1a by hollowing the inside as much as possible, and it is preferable that the material in the vicinity of the lower bearing is metal. And the main wind receiving part 1b
May be used by arranging a plurality of gutter-like members having the shape shown in FIG. 3, but in this case, it is necessary to provide a gap between adjacent members, and the gap is 20 mm or more and approximately 1/1 / of the width of the main wind receiving portion.
The size is set to approximately 3 to 1/4. Further, a material having high strength and capable of achieving a reduction in thickness and weight is preferable.
Adhesion, rivet bonding, and the like are conceivable, but are not limited as long as they can be fixed and the object can be achieved. In addition, wind receiving material holding portion 1
In the case of c, the method of fixing to the rotating shaft portion 1a may be, for example, integral molding with the rotating shaft portion, or welding, welding, bonding, rivet joining, etc., but is not limited as long as it can be fixed and the object can be achieved. It is preferable to make it as narrow as possible, and it is more preferable that the surface receiving the head wind considers a shape that reduces air resistance. The annular portion 1d is disposed at an appropriate position in a range below the wind receiving material holding portion 1c, and is joined to the lowermost portion 1c and the shaft portion 1d.
a through a connecting member. As the connecting member, it is preferable to use a member, a shape, and a connecting method capable of securing the connecting strength capable of achieving the object and reducing the weight. In addition, the vertical reinforcement part 1 of the main wind receiving part 1b
e and the horizontal reinforcing portion 1f are preferably made as thin as possible under the conditions for achieving the reinforcing purpose. As a bearing method used for the shaft bearing portion 2 and the outer ring bearing portion 3, not only a bearing from below but also a bearing method taking into account the horizontal direction and prevention of floating is used, and smooth rotation is possible. As a mechanism for reducing the frictional resistance of the bearing part, for example, a mechanism similar to a ball bearing, polytetrafluoroethylene, fluororesin, graphite, molybdenum disulfide, etc. are mixed with other plastic materials to reduce the frictional resistance. A mechanism that incorporates the sliding member as a sliding member and a mechanism that uses a lubricant such as oil are conceivable. Is not limited. The support member 4 is preferably made of metal in order to improve durability and support strength. The support member 6 is fixed to the support base 6 with, for example, bolts and nuts 7. The generator 5 is not limited as long as it can use a generator conventionally used for wind power generation or the like, and can be connected to the impeller 1 so as to exhibit a power generation function.
In addition to the method of directly connecting the shaft and the impeller 1, for example, a method of transmitting the rotational force by incorporating a gear mechanism 8 as shown in FIG. 5 may be considered, and the rotational force of the impeller 1 is used for power generation. The connection method is not limited as long as it can be provided. Further, the generator 5 is provided with or provided with devices and devices provided or attached to a conventional wind power generator. And the support base 6 is, for example, a steel structure,
The structure, scale, and detailed specifications are appropriately set in consideration of the power generation capacity of the wind turbine generator and the place where the wind turbine generator is to be installed by using a structure such as a reinforced concrete structure. According to the present invention, in wind power generation, it is not necessary to raise the support of the impeller, and facility maintenance is easy,
It is possible to respond to the increase in power generation capacity and to curb construction costs.Therefore, with the fear of depletion of energy resources and the deterioration of the global environment, there is a global By contributing to the spread of power generation devices using wind, which is environmentally friendly natural energy, it can contribute to suppressing the depletion of energy resources and the deterioration of the global environment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view illustrating a wind turbine generator according to the present invention. FIG. 2 is a cross-sectional plan view of an impeller of an example of the wind turbine generator according to the present invention. It is sectional drawing of the example of a shape of the main wind receiving part of the wind power generator of FIG. 1, A figure is the example of a shape in which the internal angle of both ends is 30 degrees, B is the example of the shape in which the internal angle of the other end is 45 degrees, FIG. C is an example of a shape similar to an elliptical partial shape in contact with the three points of the mountain shape in FIG. A, and FIG. D is an example of a shape similar to an elliptical partial shape in contact with the three points of the mountain shape in FIG. FIG. 4 is a cross-sectional view of an example of a rotary bearing portion of an impeller of the wind turbine generator of the present invention. FIG. 5 is a side view of an example of a transmission mechanism of the rotational force of the impeller of the wind turbine generator of the present invention to the generator. FIG. A is an example of a spur gear, and FIG. B is an example of a bevel gear. DESCRIPTION OF SYMBOLS 1; impeller 1a; rotating shaft 1b; main wind receiving portion 1c; wind receiving material holding portion 1d; annular portion 1e; vertical reinforcing portion 1f of 1b; horizontal reinforcing portion 2 of 1b; Reference Signs List 3 outer ring support portion 4 support support member 5 generator 6 support base 7 bolts and nuts 8 gear mechanism

Claims (1)

Claims 1. A wind turbine generator comprising an impeller operated by wind power and having a rotating shaft extending in a vertical direction, and a generator operated by the rotational force of the impeller. In order to effectively capture the tailwind and reduce the resistance of the headwind,
The cross-section of the main part of the main wind receiving portion having one end having an interior angle of about 30 degrees and the other end having an interior angle of about 30 to 45 degrees has a mountain-shaped cross section or an ellipse contacting the mountain-shaped end and the top. A gutter-like member having a cross-sectional shape similar to that of the partial shape is provided in the vertical direction with a gap provided between the rotary shaft and the rotary shaft, and the shaft is perpendicular to the rotary shaft portion in the axial direction to hold the main wind receiving portion. An elongated wind receiving material holding portion that protrudes radially is disposed at least near both ends of the main wind receiving portion, and the impeller is allowed to stand alone and rotate only by a support below a rotating shaft portion. On the floor surface of the support base via the support member by the outer ring support part of the lower part of the annular part that forms an outer ring at a distance from the shaft support part of the rotatable rotary shaft part and the rotary shaft part A wind power generator that is supported.