Rotary mechanism for driving power generator

Abstract

To provide a rotary mechanism with satisfactory rotation efficiency which bears rotation of a power generator.SOLUTION: A rotating shaft 12 of a rotor 11 which rotates by pressure of fluid is coupled with a rotation side component 31 of a rotary fitting 30. The rotation side component 31 has a columnar part provided with a conical part at its tip, and the tip of the conical part contacts a fixing side component 32 of the rotary fitting 30. Moreover, a projection (recess insertion part) of the fixing side component 32 enters a recess of the rotation side component 31 to regulate deviation of the rotation side component 31 and the rotating shaft 12 coupled with the rotation side component 31 from a gravity direction at a position above the contact position.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a rotating mechanism that drives a generator, and enables efficient rotation of the rotating mechanism itself. [Background technology]

[0002] Conventionally, generators generate electricity by placing a coil formed by winding a conductor close to a magnet and rotating the magnet relative to the coil, or by rotating the coil relative to the magnet, thereby generating an induced current in the coil. In this way, when the magnetic flux linking the coil changes over time, an electromotive force is generated in the coil.

[0003] In conventional generators, in order to rotate coils or magnets, the rotating shaft of the generator is rotated at high speed by a gas or steam turbine, the rotating shaft is rotated at low speed by a water wheel, or the rotating shaft is driven by a windmill.

[0004] The present inventor has previously proposed to improve the efficiency of rotation of a generator in which a rotor rotates inside a container by forming the tip of the rotating shaft into a conical or pyramidal shape to reduce the contact resistance between the rotating shaft and the bottom of the container that supports the lower end of the rotating shaft (Patent Document 1 below). This generator is called a "top-type generator" because the rotor rotates like a top.

[0005] However, in order to improve the efficiency of a power generation system that includes a generator, it is also necessary to consider improving the rotational efficiency of the rotation mechanism that rotates the generator. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7345746 Summary of the Invention [Problem to be solved by the invention]

[0007] From this viewpoint, an object of the present invention is to improve the rotation efficiency of a rotation mechanism that rotates a generator. [Means for solving the problem]

[0008] The present invention is a rotation mechanism in which a rotor rotates due to fluid pressure, a central axis of the rotor extending along the direction of gravity rotates, and the rotation of the central axis is transmitted to a generator, and at the contact position between the lower end of the central axis and the fulcrum that supports the lower end, or at the contact position between a rotating side part of a rotating fitting to which the lower end is connected and a fixed side part of a rotating fitting that supports the rotating side part, only the tip of the conical portion is in contact, and at a position above this contact position, deviation of the central axis from the direction of gravity, or deviation of the rotating side part to which the central axis is connected from the direction of gravity, is regulated.

[0009] In addition, in the rotation mechanism of the present invention, the rotating part of the rotating metal fitting has an opening that opens to the lower end, a recess that is connected to this opening and is composed of a spatial portion with an area larger than the opening, and a cylindrical portion that extends downward from the center position of the recess, passing through the opening. On the other hand, the fixed part of the rotating metal fitting has a hole portion that receives the cylindrical portion of the rotating part, and a recess insertion portion that is inserted into the space of the recess. The tip of the conical portion provided at the tip of the cylindrical portion of the rotating side component contacts the bottom surface of the hole portion of the fixed side component, and the engagement between the recess of the rotating side component and the recess insertion portion of the fixed side component prevents the cylindrical portion from shifting from the direction of gravity.

[0010] In addition, in the rotation mechanism of the present invention, in the above configuration, the installation position of the conical portion may be changed so that a conical portion is provided on the bottom surface of the hole portion of the fixed side component and the tip of the conical portion contacts the end surface of the cylindrical portion of the rotating side component.

[0011] In addition, in the rotation mechanism of the present invention, gas, steam, water, or wind is used as the fluid. Effect of the Invention

[0012] The rotation mechanism of the present invention has good rotation efficiency and is capable of high speed rotation. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a diagram showing a steam-driven rotation mechanism according to an embodiment of the present invention. [Diagram 2] (a) A diagram showing the connection between the rotor and the rotating metal fitting in Figure 1, and (b) a diagram showing the rotor as viewed from the inflow direction of the fluid (steam). [Diagram 3] FIG. 1A is a diagram showing the structure of a rotating fitting; FIG. 1B is a diagram showing a rotating side part of the rotating fitting; FIG. 1C is a diagram showing a fixed side part of the rotating fitting; and FIG. 1D is a diagram showing an example of how to combine the rotating side part and the fixed side part. [Figure 4] FIG. 2 is a diagram showing a wind-driven rotation mechanism according to an embodiment of the present invention. [Diagram 5] FIG. 2A is a side view showing a water-driven rotation mechanism according to an embodiment of the present invention, and FIG. 2B is a top view thereof. [Figure 6] 4 is a diagram showing a modified example of the rotating metal fitting in FIG. 3. [Figure 7] FIG. 13 shows another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, the embodiment of the present invention will be described based on examples.

[0015] FIG. 1 shows the overall structure of a rotation mechanism in the embodiment. In this rotation mechanism, rotor 11, which is disposed in the flow path of the steam flow, rotates under the pressure of the steam. In response to this, central shaft (rotation shaft) 12 of rotor 11 rotates, and the rotation is transmitted to rotation shaft 21 of generator 20 via bevel gears 13 and 14, causing generator 20 to generate electricity. Fig. 2(a) shows a state in which the rotor 11 is fixed to the rotating metal fitting 30. Fig. 2(b) shows the shape of the rotor 11 as viewed from above.

[0016] The rotating shaft 12 of the rotor 11 extends in the direction of gravity, and its lower end is fixed to a rotating part 31 of a rotating metal fitting 30 . As shown in Fig. 3(a), the rotating fitting 30 is made up of a rotating part 31 and a fixed part 32. As shown in Fig. 3(d), the rotating part 31 has a recess 31(1) consisting of an opening 31(2) that opens to the bottom end and a space portion 31(3) that continues into the opening 31(2), and further has a cylindrical portion 31(4) that extends downward from the center position of the recess 31(1) and passes through the opening 31(2). The space 31(3) of the recess 31(1) has an area larger than that of the opening 31(2).

[0017] On the other hand, the fixed side part 32 of the rotating fitting 30 has a hole portion 32(1) that receives the cylindrical portion 31(4) of the rotating side part 31, and a recess insertion portion 32(2) that is inserted into the space portion 31(3) of the recess 31(1) of the rotating side part 31.

[0018] 3(a), when the fixed-side component 32 and the rotating-side component 31 of the rotating metal fitting 30 are combined, the tip of the conical portion 31(5) provided at the tip of the cylindrical portion 31(4) of the rotating-side component 31 comes into contact with the bottom surface of the hole portion 32(1) of the fixed-side component 32. In addition, the recess insertion portion 32(2) of the fixed-side component 32 enters the space portion 31(3) of the recess 31(1) of the rotating-side component 31, and the position of the rotating-side component 31 relative to the fixed-side component 32 is regulated.

[0019] In order to combine the fixed side component 32 and the rotating side component 31 in the state shown in FIG. 3(a), each of the fixed side component 32 and the rotating side component 31 must be an assembly of a plurality of components. Figure 3(d) shows an example in which the fixed side part 32 and the rotating side part 31 are each divided at the dotted line position, and each divided part is placed at the position indicated by the arrow, and then the fixed side part 32 and the rotating side part 31 are recombined to obtain the state shown in Figure 3(a).

[0020] The contact resistance between the tip of the conical portion 31(5) provided on the columnar portion 31(4) of the rotating part 31 and the bottom surface of the hole 32(2) of the fixed part 32 is small. Therefore, the rotating shaft 12 of the rotation mechanism fixed to the rotating part 31 of the rotating metal fitting 30 can rotate with high rotational efficiency, enabling high speed rotation. In addition, the recess 31(1) of the rotating side part 31 of the rotating fitting 30 and the recess insertion part 32(2) of the fixed side part 32 engage with each other, preventing the rotating shaft 12 fixed to the rotating side part 31 from rotating in a state misaligned with the direction of gravity. Therefore, the rotating shaft 12 of the rotating mechanism can rotate in a stable state.

[0021] 4 shows a configuration in which a rotating shaft 12 is rotated by a windmill 40 which rotates due to wind, and the rotation is transmitted to a rotating shaft 21 of a generator 20, generating electricity in the generator 20. The rotating shaft 12 is fixed to a rotating part 31 of a rotating metal fitting 30 and rotates. The configuration of the rotating metal fitting 30 is the same as that in FIG.

[0022] 5 shows a configuration in which the rotating shaft 12 is rotated by a water wheel 50 rotated by a water flow, and the rotation is transmitted to a rotating shaft 21 of a generator 20 to generate electricity in the generator 20. The rotating shaft 12 is fixed to a rotating part 31 of a rotating metal fitting 30 and rotates. The configuration of the rotating metal fitting 30 is the same as that in FIG. 5(a) shows a side view and FIG.5(b) shows a top view. Since the water flow hits only a part of the water wheel 50, the water wheel 50 continues to rotate.

[0023] 6 shows a modified example of the rotating fitting 30. In this rotating fitting 30, a conical portion 32(3) is disposed on the bottom surface of the hole 32(1) of the fixed-side component 32, and the tip of this conical portion 32(3) abuts against the end surface of the cylindrical portion 31(4) of the rotating-side component 31. The other configurations are the same as those in FIG. In this case too, since the contact resistance between the tip of the conical portion 32(3) and the end face of the cylindrical portion 31(4) is small, the rotating shaft 12 of the rotating mechanism fixed to the rotating side part 31 of the rotating fitting 30 can rotate with high rotational efficiency, making it possible to rotate at high speeds.

[0024] FIG. 7 shows an embodiment in which the rotating shaft 12 of the rotating mechanism is supported by something other than the rotating metal fitting 30. In this embodiment, a conical portion 12(1) is provided at the lower end of the rotating shaft 12, and its tip is abutted against the fulcrum of a support plate 61. Furthermore, a suppression member 62 is disposed above this abutment position to suppress deviation of the rotating shaft 12 from the direction of gravity, thereby adjusting the orientation of the rotating shaft 12.

[0025] As shown in FIG. 7(b), this suppression member 62 comprises a disk 62(2) having an insertion hole 62(1) for the rotating shaft 12 at its center, and a plurality of feet 62(3) for positioning the disk 62(2). The tips of the plurality of feet 62(3) are brought into contact with a fixing member to position the disk 62(2).

[0026] In this embodiment as well, the contact resistance between the conical portion 12(1) of the rotating shaft 12 and the support plate 61 is small, so that the rotating shaft 12 of the rotation mechanism can rotate with high rotational efficiency and can rotate at high speed. Since the orientation of the rotating shaft 12 is constantly adjusted by the suppressing member 62, the rotating shaft 12 can continue to rotate stably.

[0027] The rotation mechanism of the present invention can rotate using gas, steam, water, wind, etc. [Industrial Applicability]

[0028] INDUSTRIAL APPLICABILITY The rotating mechanism of the present invention can be used to rotate generators in various industrial fields, and can also be used as a learning material in educational settings. [Explanation of symbols]

[0029] 11 Rotor 12 Central axis (rotation axis) 12(1) Cone-shaped part 13 Bevel gear 14 Bevel gear 20. Generator 21 Rotating shaft of generator 30 Rotating bracket 31 Rotating parts 31(1) Recess 31(2) Opening 31(3) Spatial part 31(4) Cylindrical part 31(5) Cone-shaped part 32 Fixed side parts 32(1) Hole 32(2) Recessed insert 32(3) Cone-shaped part 40 windmill 50 Waterwheel 61 Support plate 62 Restraining member 62(1) Insertion hole 62(2) Disc 62(3) Foot

Claims

1. A rotation mechanism in which a rotor rotates due to pressure of a fluid, a central shaft extending along a direction of gravity of the rotor rotates, and the rotation of the central shaft is transmitted to a generator, only the tip of the conical portion comes into contact at a contact position between the lower end of the central shaft and a fulcrum that supports the lower end, or at a contact position between a rotating part of a rotating metal fitting to which the lower end is connected and a fixed part of the rotating metal fitting that supports the rotating part, A rotation mechanism in which deviation of the central shaft from the direction of gravity or deviation of the rotating part to which the central shaft is connected from the direction of gravity is restricted at a position above the contact position.

2. The rotation mechanism according to claim 1 , the rotation side part of the rotating metal fitting has an opening that opens at a lower end, a recess that is connected to the opening and is formed of a space portion having an area larger than the opening, and a cylindrical portion that extends downward from a center position of the recess through the opening, the fixed-side component of the rotating fitting has a hole portion that receives the cylindrical portion of the rotating-side component, and a recess insertion portion that is inserted into the space portion of the recess, a tip of the conical portion provided at a tip of the cylindrical portion of the rotating component contacts a bottom surface of the hole of the fixed component, A rotation mechanism in which the recess of the rotating component and the recess insertion portion of the fixed component engage with each other to restrict displacement of the columnar portion from the direction of gravity.

3. The rotation mechanism according to claim 1 , the rotation side part of the rotating metal fitting has an opening that opens at a lower end, a recess that is connected to the opening and is formed of a space portion having an area larger than the opening, and a cylindrical portion that extends downward from a center position of the recess through the opening, the fixed-side component of the rotating fitting has a hole portion that receives the cylindrical portion of the rotating-side component, and a recess insertion portion that is inserted into the space portion of the recess, a tip of the conical portion provided on the bottom surface of the hole of the fixed-side component contacts an end surface of the cylindrical portion of the rotating-side component, A rotation mechanism in which the recess of the rotating component and the recess insertion portion of the fixed component engage with each other to restrict displacement of the columnar portion from the direction of gravity.

4. A rotation mechanism according to any one of claims 1 to 3, A rotating mechanism, wherein the fluid is gas, steam, water, or wind.

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