JP2012127333A - Pelton wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the cost reduction of a conventional Pelton wheel is limited due to the complexity of its structure and assembly, and necessity of a machining device therefor, and the price of the wheel of a small power generation capacity is too high to be easily obtained by an individual or a small community.SOLUTION: In a Pelton wheel, cup-shaped buckets are mounted substantially at an equal spacing on outer walls of a substantially cylindrical wheel body in which the outer walls are substantially vertical, and a bottom side has a flat shape. The buckets may be mounted on the wheel body through assembly by bolts and nuts.

Description

  The present invention relates to a Pelton turbine having a simplified structure and an extremely easy assembly process.

  Pelton turbines are manufactured by large corporations, mainly Mitsubishi Heavy Industries, Ltd. and Toshiba Corporation, which are large and complex in structure. In recent years, with the increasing demand for small hydropower generation using agricultural waterways, Pelton turbines with smaller and simpler structures have been demanded. As a prior art, Matsushita Electric Industrial Co., Ltd. has mass-produced Pelton turbines that have been reduced to sheet metal. Since the turbine body, its cover and bucket are each molded as a single unit and assembled by caulking, it is extremely easy to form and assemble. For example, sheet metal pressing is used to reduce costs by mass production. (See Patent Document 1). However, this also has a limit in reducing the cost of materials by mass production due to the processing processes of the respective working steps of pressing, forming and assembling, and the complexity of the tools required for them.

45-26005

  Regarding the assembly work and cost of Pelton turbines, although the assembly work has become extremely easy in recent years, the current situation is that the power generation device is not at a price that can be easily obtained by individuals and small communities.

  The present inventor pays attention to them, and an object thereof is to provide a Pelton turbine having a simple structure and a very inexpensive structure as a small hydroelectric power generation apparatus.

  The Pelton turbine of the present invention that achieves such an object has a simple structure in which the turbine body is made of a cylindrical dome, and the bucket is attached and fixed with bolts and nuts with bolts and nuts. Is.

  This Pelton turbine is simply assembled by attaching and fixing the turbine body, its cover and bucket with bolts and nuts. Therefore, there are few processing processes of work processes, and not only the material cost and labor cost can be reduced, but also in the case of mass production, it can be provided at an extremely low price for individual consumers. Therefore, it is easy for a community such as a village to manufacture the present invention and a Pelton turbine for the community, or an NPO corporation can provide for schools and elderly households.

  Stainless steel copper pans and bowls that are generally available can be used for assembly. As an example, a stainless steel copper plate having a thickness of 0.6 cm and fixing 12 bowls and 12 bowls with bolts will be described with reference to the drawings.

Overall front view of the present invention and bucket cross-sectional view The perspective view of the process to the waterwheel main body of this invention The perspective view which shows the aspect of the connection of the watermill main body and bucket of this invention Cross-sectional view of fixing the bolt that becomes the rotating shaft

FIG. 1 shows the present invention, in which A is a cylindrical turbine body, and B is a bowl-shaped bucket. Reference numeral 1 is a pan, and 2 is a pan lid, which is a turbine body A. 3 is a bucket B with a bowl. The outer peripheral edges of the pan 1 and the pan lid 2 (the pan gripping portion 1a and the pan lid gripping portion 2a) serving as the water turbine body A are fixed by bolts 4c, washers 5c, springs 6c, and nuts 7c. On the outer wall of the water turbine main body A, twelve bowls 3 serving as buckets B installed at regular intervals are fixed by bolts 4a, washers 5a, springs 6a, and nuts 7a. As shown in FIG. 4, the rod 8 is passed through the center of the bottom surface of the pan 1 and fixed with a washer 5b, a spring 6b and a nut 7b. A rod 8 passed through the center of the pot 1 and the pot lid 2 serves as a rotation axis.
The present invention is a Pelton in which a substantially cylindrical shape having the above-described configuration, an outer wall of a water turbine main body having a substantially vertical shape and a flat bottom, and hook-shaped buckets attached to bolts and nuts at substantially equal intervals. The water wheel is completed.

  FIG. 2 shows a state in which the pan 1 is processed into the turbine body A. The pan handle 1b from the pan 1 and the pan lid handle 2b from the pan lid 2 are disassembled and removed. Next, one hole processing 10 is provided at the center of the bottom of the pan 1 and one is provided at the center of the pan lid 2, 24 holes 9 are provided at regular intervals on the outer wall, and a hole processing 11 is provided on the pan 1. And 6 on the outer periphery of each of the pan lids 2 (the pan gripping portion 1a and the pan lid gripping portion 2a).

  As shown in FIG. 3, two holes 9 are formed on the side surface of the bowl 3. The hole processing 9 is performed so as to have the same interval as the hole processing 9 processed at a constant interval on the outer wall of the pan 1. Do it in 12 bowls 3. At this time, all 12 bowls 3 have the same size. The bowls 3 are arranged in the same direction on the outer wall of the pan 1 and fixed with bolts 4a, washers 5a, springs 6a, and nuts 7a as shown in the lower figure of FIG. In this case, a bucket B is attached to the turbine body A.

Next, as shown in FIG. 4, the rod 8 is passed through the hole 10 in the center of the bottom of the pan 1 and the center of the pan lid 2, and fixed with a washer 5b, a spring 6b, and a nut 7b. The pan lid 2 is fixed as a cover, and the rod 8 installed at the center serves as a rotation axis. Finally, as shown in FIG. 3, six holes 11 of the holes 1 on the outer peripheral edges of the pan 1 and the pan lid 2 (pan gripping portion 1a and pan lid gripping portion 2a) are bolts 4c, washers 5c, springs. Secure with 6c and nut 7c. In FIG. 4, although the inside of the pan 1 is fixed with a double nut, this is an example. In this embodiment, a bolt having a diameter of 1.5 cm is used for the rod 8.
The present invention is a manufacturing process as described above.

As an example of the above, the diameter of the turbine body A is 32 cm, the length of the outer wall is 12 cm, the diameter of the bowl-shaped bucket B is 19 cm, and the depth is 8 cm. A Pelton turbine equipped with the same buckets arranged in the same direction was prepared. It was confirmed that 138 W of power was generated at an average flow rate of 5.7 m / sec and a flow rate of 26.8 L / sec, with a water pipe length of 8 m and a diameter of 10 cm installed at a drop of 3 m (the inclination of the water pipe was about 22 °). . In this structure, it can be used with a relatively low head.
The number of bowls in the above embodiment is not limited to this, and can be changed depending on the diameter of the pot 1 and the diameter and depth of the bowl 3. The power generation increases in proportion to the increase in the diameter of the entire turbine.

A ... Turbine body B ... Bucket 1 ... Pan 1a ... Pan holding part 1b ... Pan handle 2 ... Pan lid 2a ... Pan lid holding part 2b ... Holding the pot lid Hand 3... Bowl 4 a... Bolt 4 c used for hole processing 9. Bolt 5 a used for hole processing 11. Washer 5 b used for bolt 4 a. 5c ... Washer 6a used for bolt 4c ... Spring 6b used for bolt 4a ... Spring 6c used for rod 8 ... Spring 7a used for bolt 4c ... Nut used for bolt 4a 7b: nut 7c used for the rod 8 ... nut 8 used for the bolt 4c ... rod 9 ... machining of the hole for attaching the bowl 3 10 ... machining of the hole for passing the rod 8 11. Gripping part 1a of pan and pan lid Machining holes for attaching the 2a

Claims (3)

  A Pelton turbine, characterized in that basket-like buckets are attached to the outer wall of a substantially cylindrical main body at substantially equal intervals.   2. The Pelton turbine according to claim 1, wherein the packet is attached to the main body with a bolt and a nut.   The Pelton turbine according to claim 1 or 2, wherein the bucket is attached to the main body having a substantially vertical outer wall and a flat bottom.

Images