Flywheel energy storage device

Abstract

The utility model belongs to the technical field of physical energy storage, and particularly relates to a flywheel energy storage device which comprises a supporting bottom plate and an outer shell, the section of the supporting bottom plate is of an inverted U-shaped structure, an annular groove is formed in the upper surface of the supporting bottom plate, a sealing gasket is arranged on the inner side of the annular groove, a mounting table is arranged in the center of the upper surface of the supporting bottom plate, and a flywheel is arranged in the mounting table. A flywheel body is mounted at the top of the mounting table through a bearing, a spline shaft is arranged in the center of the top of the flywheel body, the axis of the flywheel body coincides with the circle center of the annular groove, the outer shell is arranged above the supporting bottom plate, the bottom of the outer shell is open, and an extending edge is arranged on the edge of the bottom of the outer shell. The two lifting blocks can be controlled to move synchronously at the same time through a pushing air cylinder at the bottom, the outer shell can be pressed downwards through wedge-shaped blocks on the surfaces of the lifting blocks during installation so as to extrude a sealing ring at the bottom, then the sealing performance of the outer shell after installation is improved, and on the contrary, the lifting blocks can be moved upwards during disassembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of physical energy storage, and in particular relates to a flywheel energy storage device. Background Art

[0002] Flywheel energy storage is mostly composed of main components such as flywheel, motor, bearing, etc. The coaxially connected flywheel and motor are placed together in a vacuum container. When the system is charging, the motor drives the flywheel to rotate at high speed, converting electricity into kinetic energy of the flywheel rotation and storing it. When discharging, the process is reversed, and the highly rotating flywheel drives the motor to rotate and generate electricity, thereby generating electrical energy. The conversion efficiency of flywheel batteries is extremely high, which can reach 90%, and it has the advantages of service life and fast charging and discharging speed.

[0003] In order to reduce the friction between the flywheel and the air when it rotates, most of the existing flywheel energy storage devices place the flywheel inside a vacuum chamber, which requires the external shell to have a high degree of sealing. Most of the existing flywheel external shells are butt-sealed by the cooperation of a sealing ring and multiple bolts. This installation method makes it inconvenient during inspection and maintenance. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a flywheel energy storage device, which can realize the rapid installation or disassembly of the external shell to facilitate the maintenance of the flywheel energy storage device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A flywheel energy storage device comprises a support base plate and an outer shell, wherein the cross section of the support base plate is an inverted U-shaped structure, an annular groove is provided on the upper surface of the support base plate, a sealing gasket is provided on the inner side of the annular groove, a mounting platform is provided at the center of the upper surface of the support base plate, a flywheel body is installed on the top of the mounting platform through a bearing, a spline shaft is provided at the center of the top of the flywheel body, the axis of the flywheel body coincides with the center of the annular groove, the outer shell is placed above the support base plate, the bottom of the outer shell is open, an extension is provided at the bottom edge of the outer shell, and the extension is placed on the annular On the inner side of the groove, the flywheel body is placed inside the outer shell, a motor is fixed on the top of the outer shell, an inner spline sleeve is installed at the output end of the motor, the spline shaft is adapted to the inner size of the inner spline sleeve, and storage holes are symmetrically provided on both sides of the upper surface of the support base plate, and a lifting block is vertically slidably installed on the inner side of the storage hole, and a wedge-shaped limit block is slidably installed on the surface of one side of the two lifting blocks close to each other, and an end of the upper surface of the wedge-shaped limit block facing away from the lifting block is set to an inclined surface, and an extrusion convex point is provided at the bottom of the wedge-shaped limit block, and the bottom of the extrusion convex point is in contact with the upper surface of the extended edge.

[0007] Furthermore, a spring is arranged inside the lifting block, and an end of the spring is in contact with an end surface of the wedge-shaped limiting block facing away from the outer shell.

[0008] Furthermore, the upper surface of the support base plate is symmetrically provided with docking bolts, and the docking bolts are placed outside the two receiving holes.

[0009] Furthermore, one end of the wedge-shaped limit block facing away from the outer shell is connected to a pull rope, the pull rope passes through the lifting block, and one end of the pull rope facing away from the wedge-shaped limit block is connected to the top of the docking bolt.

[0010] Furthermore, an extension rod is vertically arranged at the bottom of the lifting block, and the extension rod passes through the supporting base plate. A connecting plate is horizontally installed at the bottom of the two extension rods by bolts. A pushing cylinder is vertically arranged at the center of the lower surface of the supporting base plate, and the output end of the pushing cylinder is fixed on the center surface of the connecting plate.

[0011] Furthermore, a vacuum docking hole is provided on one side of the outer shell.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the two lifting blocks can be controlled to move synchronously at the same time through the pushing cylinder at the bottom; during installation, the outer shell can be pressed down by the wedge-shaped block on the surface of the lifting block to squeeze the sealing ring at the bottom, thereby improving the sealing of the outer shell after installation; conversely, during disassembly, the lifting block can be moved upward to release the squeezing of the outer shell; at the same time, the pull rope can be pulled to make the wedge-shaped block shrink toward the inside of the lifting block, thereby losing the limit on the outer shell, thereby facilitating the disassembly of the outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a longitudinal front cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of area A;

[0016] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure of area B.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Support base plate; 2. Annular groove; 3. Sealing gasket; 4. Storage hole; 5. Mounting table; 6. Flywheel body; 7. Spline shaft; 8. Outer shell; 9. Extension; 10. Vacuum docking hole; 11. Motor; 12. Inner spline sleeve; 13. Lifting block; 14. Wedge-shaped limit block; 15. Extrusion convex point; 16. Spring; 17. Docking bolt; 18. Pull rope; 19. Extension rod; 20. Connecting plate; 21. Push cylinder. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0020] Please refer to Figure 1-Figure 4 As shown, a flywheel energy storage device comprises a support base plate 1 and an outer shell 8. The cross section of the support base plate 1 is an inverted U-shaped structure, which can then form an arched structure, so that the center of the support base plate 1 is in a suspended state. An annular groove 2 is provided on the upper surface of the support base plate 1, and a sealing gasket 3 is provided inside the annular groove 2. A mounting platform 5 is provided at the center of the upper surface of the support base plate 1. A flywheel body 6 is installed on the top of the mounting platform 5 through a bearing. The flywheel body 6 can rotate. A spline shaft 7 is provided at the top center of the flywheel body 6. The axis of the flywheel body 6 coincides with the center of the annular groove 2 to ensure that the distance between the flywheel body 6 and the inner wall of the outer shell 8 is consistent. The outer shell 8 is placed above the support base plate 1, and the bottom of the outer shell 8 is open. Open, and then the outer shell 8 can be installed on the outside of the flywheel body 6 by moving downward to form a sealing structure. The bottom edge of the outer shell 8 is provided with an extension 9, and the extension 9 is placed on the inner side of the annular groove 2. After installation, the extension 9 still exceeds the upper surface of the supporting base plate 1. The flywheel body 6 is placed inside the outer shell 8, and a motor 11 is fixed on the top of the outer shell 8. An internal spline sleeve 12 is installed at the output end of the motor 11. The internal dimensions of the spline shaft 7 and the internal spline sleeve 12 are matched. When the outer shell 8 is installed in place, the power transmission to the flywheel body 6 can be realized through the cooperation of the two. A vacuum docking hole 10 is provided on one side of the outer shell 8 to extract the air inside the outer shell 8 by docking with an external vacuum equipment.

[0021] Please refer to Figure 2 and Figure 3As shown, receiving holes 4 are symmetrically provided on both sides of the upper surface of the supporting base plate 1, and a lifting block 13 is vertically slidably installed on the inner side of the storing hole 4, and a wedge-shaped limit block 14 is slidably installed on the side surface where the two lifting blocks 13 are close to each other. The wedge-shaped limit block 14 is placed above the extended edge 9, so that the extended plate 9 can be pressed down by the downward movement of the lifting block 13 to improve the sealing performance. The end of the upper surface of the wedge-shaped limit block 14 facing away from the lifting block 13 is set as an inclined surface, and the inclined surface can ensure that the wedge-shaped limit block 14 is squeezed when the outer shell 8 moves downward to ensure its smooth installation. An extrusion protrusion 15 is set at the bottom of the wedge-shaped limit block 14, and the bottom of the extrusion protrusion 15 is in contact with the upper surface of the extended edge 9 to ensure the limitation of the extended edge 9.

[0022] Among them, a spring 16 is arranged inside the lifting block 13, and the end of the spring 16 contacts the end surface of the wedge-shaped limit block 14 facing away from the outer shell 8. The elastic force of the spring 16 allows the wedge-shaped limit block 14 to be extended and placed above the extended edge 9 when there is no external force or when the lifting block 13 is placed at the bottom.

[0023] Please refer to Figure 1-Figure 3 As shown, docking bolts 17 are symmetrically arranged on the upper surface of the support base plate 1, and the docking bolts 17 are placed outside the two storage holes 4. A pull rope 18 is connected to the end of the wedge-shaped limit block 14 that is away from the outer shell 8. The pull rope 18 runs through the lifting block 13, and the end of the pull rope 18 that is away from the wedge-shaped limit block 14 is connected to the top of the docking bolt 17. When the lifting block 13 is controlled to move upward, the pull rope 18 can be used to pull the wedge-shaped limit block 14 to make it shrink toward the inside of the lifting block 13 and be placed outside the vertical line of the edge.

[0024] Please refer to Figure 2 and Figure 2 As shown, an extension rod 19 is vertically arranged at the bottom of the lifting block 13, and the extension rod 19 passes through the supporting base plate 1. A connecting plate 20 is horizontally installed at the bottom of the two extension rods 19 by bolts. A pushing cylinder 21 is vertically arranged at the center of the lower surface of the supporting base plate 1, and the output end of the pushing cylinder 21 is fixed on the central surface of the connecting plate 20, and then the up and down movement of the lifting block 13 can be synchronously controlled by the pushing cylinder 21 at the bottom.

[0025] The working principle of the utility model is as follows: by pushing the cylinder 21 to control the height of the connecting plate 20, and then simultaneously controlling the height of the extension rods 19 on both sides to control the height of the two lifting blocks 13. When disassembling, the lifting blocks 13 on both sides can be controlled to move up by pushing the cylinder 21. During the upward movement of the lifting blocks 13, the wedge-shaped limit block 14 can be pulled into the inner side of the lifting block 13 by pulling the pull rope 18, and the extension 9 is no longer limited. At this time, the outer shell 8 can be lifted up to achieve separation. Conversely, when installing, the outer shell 8 moves down so that the extension 9 enters the inner side of the annular groove 2, and the wedge-shaped limit block 14 can be pulled into the inner side of the lifting block 13 by pulling the pull rope 18. The inclined surface at the end of the wedge-shaped limit block 14 cooperates with the spring 16 to ensure smooth downward movement of the outer shell 8. By pushing the cylinder 21 to control the two lifting blocks 13 to move downward, the pull rope 18 no longer pulls the wedge-shaped limit block 14. The elastic force of the spring 16 is used to place the wedge-shaped limit block 14 above the extended edge 9. In the process of continuous downward movement of the lifting block 13, the extended edge 9 can be pressed down by squeezing the protrusion 15, and then the sealing gasket 3 is squeezed to increase the sealing inside the outer shell 8. The vacuum work inside the outer shell 8 is realized through the cooperation of external equipment and the vacuum docking hole 10.

[0026] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A flywheel energy storage device, comprising a supporting base plate (1) and an outer shell (8), characterized in that: The cross section of the support base plate (1) is an inverted U-shaped structure. The upper surface of the support base plate (1) is provided with an annular groove (2). A sealing gasket (3) is arranged inside the annular groove (2). A mounting platform (5) is arranged at the center of the upper surface of the support base plate (1). A flywheel body (6) is mounted on the top of the mounting platform (5) via a bearing. A spline shaft (7) is arranged at the center of the top of the flywheel body (6). The axis of the flywheel body (6) coincides with the center of the annular groove (2). The outer shell (8) is placed above the support base plate (1). The bottom of the outer shell (8) is open. An extension (9) is arranged at the bottom edge of the outer shell (8). The extension (9) is arranged inside the annular groove (2). The flywheel body (6) is placed Inside the outer shell (8), a motor (11) is fixed on the top of the outer shell (8), an inner spline sleeve (12) is installed at the output end of the motor (11), the inner dimensions of the spline shaft (7) and the inner spline sleeve (12) are adapted, storage holes (4) are symmetrically opened on both sides of the upper surface of the support base plate (1), a lifting block (13) is vertically slidably installed inside the storage hole (4), a wedge-shaped limit block (14) is slidably installed on the side surface of the two lifting blocks (13) close to each other, an end of the upper surface of the wedge-shaped limit block (14) facing away from the lifting block (13) is set as an inclined surface, and an extrusion convex point (15) is set at the bottom of the wedge-shaped limit block (14), and the bottom of the extrusion convex point (15) is in contact with the upper surface of the extended edge (9).

2. A flywheel energy storage device according to claim 1, characterized in that: A spring (16) is arranged inside the lifting block (13), and an end of the spring (16) is in contact with an end surface of the wedge-shaped limiting block (14) that is away from the outer shell (8).

3. A flywheel energy storage device according to claim 2, characterized in that: The upper surface of the supporting base plate (1) is symmetrically provided with docking bolts (17), and the docking bolts (17) are placed outside the two receiving holes (4).

4. A flywheel energy storage device according to claim 3, characterized in that: The end of the wedge-shaped limit block (14) facing away from the outer shell (8) is connected to a pull rope (18), the pull rope (18) passes through the lifting block (13), and the end of the pull rope (18) facing away from the wedge-shaped limit block (14) is connected to the top of the docking bolt (17).

5. A flywheel energy storage device according to claim 4, characterized in that: An extension rod (19) is vertically arranged at the bottom of the lifting block (13), and the extension rod (19) penetrates the supporting base plate (1). A connecting plate (20) is transversely installed at the bottom of the two extension rods (19) by bolts. A pushing cylinder (21) is vertically arranged at the center of the lower surface of the supporting base plate (1), and the output end of the pushing cylinder (21) is fixed to the center surface of the connecting plate (20).

6. A flywheel energy storage device according to claim 1, characterized in that: A vacuum docking hole (10) is provided on one side of the exterior of the outer shell (8).

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