A vibration isolation and reduction device for a flywheel energy storage device

Abstract

This invention relates to a vibration isolation and damping device for a flywheel energy storage device. The device includes a rubber buffer seat and at least three horizontally arranged dampers. The dampers are distributed circumferentially around the flywheel energy storage device. The inner ends of the dampers are connected to the sidewalls of the flywheel energy storage device, and the outer ends are connected to the sidewalls of the pit. The rubber buffer seat is installed at the center of the bottom of the flywheel energy storage device. The upper end of the rubber buffer seat is connected to the bottom of the flywheel energy storage device, and the lower end is connected to the bottom of the pit. The dampers and rubber buffer seat of this invention respectively reduce vibrations in the horizontal and vertical directions, forming overall vibration isolation for the flywheel energy storage device.

Description

Technical Field

[0001] This invention relates to the technical field of flywheel vibration reduction, and in particular to a vibration isolation and reduction device for flywheel energy storage devices. Background Technology

[0002] A flywheel energy storage device is a device that uses a high-speed rotating flywheel to store energy. It stores kinetic energy through a rotor that rotates vertically at high speed in a low-friction environment, and includes a flywheel, motor, bearing system, and energy conversion system. During charging, the motor accelerates the flywheel, converting electrical energy into mechanical energy; during discharging, the motor acts as a generator, converting the mechanical energy of the flywheel back into electrical energy. The greatest threat to the high-speed vertically rotating rotor comes from horizontal vibrations. Horizontal vibrations acting on the flywheel energy storage device cause it to tilt, preventing the rotor from rotating vertically properly and increasing rotational energy consumption. Therefore, flywheel energy storage devices are generally installed in a pit, with rubber cushioning pads at the bottom to absorb vibrations from the ground. However, while this type of vibration reduction measure is effective at reducing external vertical vibrations, it is less effective at reducing horizontal vibrations. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a vibration isolation and damping device for flywheel energy storage devices.

[0004] The technical solution of this invention is as follows: A vibration isolation and damping device for a flywheel energy storage device includes a rubber buffer seat and at least three horizontally arranged dampers. The dampers are distributed circumferentially around the flywheel energy storage device. The inner end of each damper is connected to the side of the flywheel energy storage device, and the outer end is connected to the side wall of the pit. The dampers dampen horizontal vibrations from the outside. The circumferentially distributed dampers can dampen vibrations in all horizontal directions from the outside. The rubber buffer seat is installed at the center of the bottom of the flywheel energy storage device. The upper end of the rubber buffer seat is connected to the bottom of the flywheel energy storage device, and the lower end is connected to the bottom of the pit. The rubber buffer seat dampens vertical vibrations from the outside. The dampers and the rubber buffer seat dampen horizontal and vertical vibrations respectively, forming overall vibration isolation for the flywheel energy storage device. On the other hand, the flywheel energy storage device itself also generates vibrations during operation; the dampers and the rubber buffer seat can dampen and dissipate the vibrations generated by the flywheel energy storage device itself.

[0005] Preferably, the flywheel energy storage device has a horizontal ear plate on its side; the pit sidewall has a vertical ear plate; one end of the damper is hinged to the horizontal ear plate and the other end is hinged to the vertical ear plate; the horizontal ear plate and the vertical ear plate cooperate to buffer and absorb vibrations from various directions from the pit sidewall.

[0006] Furthermore, both the horizontal and vertical lugs are symmetrically arranged about the damper, which ensures the connection stability of the damper.

[0007] Preferably, the damper is arranged radially along the flywheel energy storage device, which has the best vibration reduction effect on horizontal vibrations pointing towards the axis of the flywheel energy storage device.

[0008] Preferably, a vibration isolation and damping device for a flywheel energy storage device further includes several support rods; the support rods are densely distributed at the bottom of the flywheel energy storage device; both ends of the support rods are connected to the bottom of the flywheel energy storage device and the bottom of the pit respectively through a spherical joint structure; the support rods reinforce the ground support for the flywheel energy storage device; a fixed sleeve is fitted onto the upper end of the support rod; the upper end of the fixed sleeve is connected to the bottom of the flywheel energy storage device, and the lower end is provided with a through hole matching the support rod; the support rod passes through the through hole; the structural strength of the fixed sleeve is weaker than the structural strength of the support rod; however, the through hole of the fixed sleeve can... This ensures that all support rods are vertical, providing stable support for the flywheel energy storage device. When the flywheel energy storage device is subjected to strong external vibrations (such as an earthquake), the fixed sleeve at the upper end of the support rod may be damaged due to the external vibration, and the central rubber buffer seat may also fail due to horizontal vibration. At this time, with the combined action of the surrounding dampers and the bottom support rod, the flywheel energy storage device will remain horizontal and slowly descend in a spiral until it returns to a stable state. The internal structure of the flywheel energy storage device is protected to the greatest extent.

[0009] Furthermore, the end of the support rod is provided with a sphere; the bottom of the flywheel energy storage device is provided with an upper spherical cup support; the bottom of the pit is provided with a lower spherical cup support; the upper and lower spherical cup supports are connected to the spherical surface pair of the sphere; the connection stability between the support rod and the flywheel energy storage device and the bottom of the pit is increased.

[0010] Furthermore, the tight fit between the inner wall of the fixed sleeve and the upper ball cup support increases the connection stability between the fixed sleeve and the flywheel energy storage device.

[0011] Furthermore, the upper ball bowl support is provided with an upper support column that connects to the flywheel energy storage device, so that the upper ball bowl support and the bottom of the flywheel energy storage device are kept at a considerable distance; the upper ball bowl support and the ball have sufficient wrap angle; the lower ball bowl support is provided with a lower support column that connects to the bottom of the pit, so that the lower ball bowl support and the bottom of the pit are kept at a considerable distance; the lower ball bowl support and the ball have sufficient wrap angle.

[0012] Furthermore, the through hole is located near the upper end of the support rod, making the fixing sleeve easier to damage.

[0013] Furthermore, the damper has a radially arranged vertical clamping plate at its outer end; this vertical clamping plate cooperates with the horizontal ear plate to limit the vertical swing range of the damper, ensuring that the damper fully absorbs external horizontal vibrations.

[0014] The beneficial effects of the present invention are as follows: The vibration isolation and damping device for flywheel energy storage devices of the present invention has the following advantages:

[0015] (1) The damper and rubber buffer seat of the present invention reduce vibration in the horizontal and vertical directions respectively, forming an overall vibration isolation of the flywheel energy storage device; on the other hand, the flywheel energy storage device itself will also generate a certain vibration when it is working; the damper and rubber buffer seat can reduce and dissipate the vibration generated by the flywheel energy storage device itself.

[0016] (2) The strength of the fixed sleeve structure of the present invention is weaker than that of the support rod structure; however, the through hole of the fixed sleeve can ensure that all support rods are in a vertical state, forming a stable support for the flywheel energy storage device; when the flywheel energy storage device is subjected to strong external vibration (such as an earthquake), the fixed sleeve at the upper end of the support rod is damaged due to external vibration, and the rubber buffer seat in the center is also damaged and fails due to horizontal vibration. At this time, under the coordinated action of the dampers around and the support rod at the bottom, the flywheel energy storage device always maintains a horizontal state and slowly spirals down until the flywheel energy storage device is in a stable state again; the internal structure of the flywheel energy storage device is protected to the greatest extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a vibration isolation and damping device for a flywheel energy storage device according to the present invention;

[0018] Figure 2 yes Figure 1 AA section view;

[0019] Figure 3 yes Figure 1 A magnified view of the I-shaped image;

[0020] Figure 4 yes Figure 1 II magnified view;

[0021] Figure 5 This is a 3D diagram of the damper;

[0022] Figure 6 It is a 3D view of the support component;

[0023] In the diagram: 01. Flywheel energy storage device, 011. Horizontal ear plate, 012. Upper ball cup support, 0121. Upper support column, 02. Pit, 021. Vertical ear plate, 022. Lower ball cup support, 0221. Lower support column, 1. Rubber buffer seat, 2. Damper, 21. Vertical clamping plate, 3. Support rod, 31. Sphere, 4. Fixed sleeve, 41. Through hole. Detailed Implementation

[0024] Example 1: See Figure 1-6A vibration isolation and damping device for a flywheel energy storage device includes a rubber buffer seat 1 and at least three horizontally arranged dampers 2. The dampers 2 are distributed circumferentially around the flywheel energy storage device 01. The inner end of the damper 2 is connected to the side of the flywheel energy storage device 01, and the outer end is connected to the side wall of the pit 02. The dampers 2 dampen horizontal vibrations from the outside. The circumferentially distributed dampers 2 can dampen vibrations in all horizontal directions from the outside. The rubber buffer seat 1 is installed at the center of the bottom of the flywheel energy storage device 01. The upper end of the rubber buffer seat 1 is connected to the bottom of the flywheel energy storage device 01, and the lower end is connected to the bottom of the pit 02. The rubber buffer seat 1 dampens vertical vibrations from the outside. The dampers 2 and the rubber buffer seat 1 dampen horizontal and vertical vibrations respectively, forming an overall vibration isolation for the flywheel energy storage device 01. On the other hand, the flywheel energy storage device 01 itself will also generate a certain vibration when it is working; the damper 2 and the rubber buffer seat 1 can reduce the vibration and dissipate the energy generated by the flywheel energy storage device 01 itself; there are 8 dampers 2 in this embodiment.

[0025] Compared with the prior art, the damper 2 and rubber buffer seat 1 of the present invention reduce vibrations in the horizontal and vertical directions respectively, forming an overall vibration isolation for the flywheel energy storage device 01.

[0026] The flywheel energy storage device 01 has a horizontal ear plate 011 on its side; the pit 02 has a vertical ear plate 021 on its side wall; one end of the damper 2 is hinged to the horizontal ear plate 011 and the other end is hinged to the vertical ear plate 021; the horizontal ear plate 011 and the vertical ear plate 021 cooperate to buffer and absorb vibrations from the side wall of the pit 02 in various directions.

[0027] The horizontal ear plate 011 and the vertical ear plate 021 are symmetrically arranged about the damper 2, which can ensure the connection stability of the damper 2.

[0028] The damper 2 is arranged radially along the flywheel energy storage device 01, and has the best vibration reduction effect on horizontal vibrations pointing towards the axis of the flywheel energy storage device 01.

[0029] A vibration damping device for a flywheel energy storage device further includes several support rods 3; the support rods 3 are densely distributed at the bottom of the flywheel energy storage device 01; both ends of the support rods 3 are connected to the bottom of the flywheel energy storage device 01 and the bottom of the pit 02 respectively through a spherical pair structure; the support rods 3 strengthen the support of the ground to the flywheel energy storage device 01; a fixed sleeve 4 is fitted on the upper end of the support rod 3; the upper end of the fixed sleeve 4 is connected to the bottom of the flywheel energy storage device 01, and the lower end is provided with a through hole 41 that matches the support rod 3; the support rod 3 passes through the through hole 41; the structural strength of the fixed sleeve 4 is weaker than the structural strength of the support rod 3, but the through hole of the fixed sleeve 4 is strong. Hole 41 ensures that all support rods 3 are in a vertical position, providing stable support for the flywheel energy storage device 01. When the flywheel energy storage device 01 is subjected to strong external vibrations (such as an earthquake), the fixed sleeve at the upper end of the support rod 3 is damaged due to the external vibration, and the rubber buffer seat 1 in the center is also damaged and fails due to horizontal vibration. At this time, with the coordinated action of the dampers 2 around the perimeter and the support rods 3 at the bottom, the flywheel energy storage device 01 remains in a horizontal position and slowly spirals down until the flywheel energy storage device 01 returns to a stable state. The internal structure of the flywheel energy storage device 01 is protected to the greatest extent.

[0030] The flywheel energy storage device 01 is equipped with a sensor; this sensor is a downward-facing photoelectric sensor or a distance sensor, used to detect whether the flywheel energy storage device 01 has fallen or is horizontally misaligned; when the sensor is a photoelectric sensor, a photosensitive film is provided at the bottom of the pit 02. When the flywheel energy storage device 01 falls and horizontal misalignment occurs, the photoelectric sensor can detect the horizontal misalignment and emit an electrical signal; the distance sensor emits distance-measuring photoelectric signals outward; once the flywheel energy storage device 01 falls, the value detected by the distance sensor changes; once this change exceeds a certain range, the distance sensor emits an electrical signal; when the sensor emits an electrical signal, the controller stops the power supply to the flywheel energy storage device 01, reducing the internal structural damage caused by the fall of the flywheel energy storage device 01.

[0031] The end of the support rod 3 is provided with a ball 31; the bottom of the flywheel energy storage device 01 is provided with an upper ball cup support 012; the bottom of the pit 02 is provided with a lower ball cup support 022; the upper ball cup support 012 and the lower ball cup support 022 are connected to the spherical surface of the ball 31; the connection stability between the support rod 3 and the flywheel energy storage device 01 and the bottom of the pit 02 is increased.

[0032] The inner wall of the fixed sleeve is tightly fitted with the upper ball cup support 012, which can increase the connection stability between the fixed sleeve and the flywheel energy storage device 01.

[0033] The upper ball cup support 012 is provided with an upper support column 0121 connected to the flywheel energy storage device 01, so that the upper ball cup support 012 and the bottom of the flywheel energy storage device 01 are kept at a considerable distance; the upper ball cup support 012 and the ball 31 have sufficient wrap angle; the lower ball cup support 022 is provided with a lower support column 0221 connected to the bottom of the pit 02, so that the lower ball cup support 022 and the bottom of the pit 02 are kept at a considerable distance; the lower ball cup support 022 and the ball 31 have sufficient wrap angle.

[0034] The damper 2 has a radially arranged vertical clamping plate 21 at its outer end; the vertical clamping plate 21 cooperates with the horizontal ear plate 011 to limit the vertical swing range of the damper 2 and ensure that the damper 2 fully absorbs external horizontal vibrations.

[0035] The working principle of this embodiment is as follows: Dampers 2 reduce horizontal vibrations from the outside; the circumferentially distributed dampers 2 can reduce vibrations in all horizontal directions from the outside; rubber buffer seats 1 reduce vertical vibrations from the outside; dampers 2 and rubber buffer seats 1 reduce horizontal and vertical vibrations respectively, forming overall vibration isolation of the flywheel energy storage device 01. On the other hand, the flywheel energy storage device 01 itself will also generate certain vibrations when it is working; dampers 2 and rubber buffer seats 1 can reduce and dissipate the vibrations generated by the flywheel energy storage device 01 itself; the horizontal ear plate 011 and the vertical ear plate 021 cooperate to buffer and absorb vibrations from all directions from the side wall of the pit 02. The structural strength of the fixed sleeve 4 is weaker than that of the support rod 3; however, the through hole 41 of the fixed sleeve 4 can ensure that all support rods 3 are in a vertical state, forming a stable support for the flywheel energy storage device 01; when the flywheel energy storage device 01 is subjected to strong external vibration (such as an earthquake), the fixed sleeve at the upper end of the support rod 3 is damaged due to external vibration, and the rubber buffer seat 1 in the center is also damaged and fails due to horizontal vibration. At this time, under the coordinated action of the dampers 2 around and the support rod 3 at the bottom, the flywheel energy storage device 01 always maintains a horizontal state and slowly spirals down until the flywheel energy storage device 01 returns to a stable state; the internal structure of the flywheel energy storage device 01 is protected to the greatest extent.

[0036] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the through hole 41 is set near the upper end of the support rod 3, making the fixing sleeve easier to destroy.

Claims

1. A vibration isolation and reduction device for a flywheel energy storage device, characterized by, It includes a rubber buffer seat and at least three horizontally arranged dampers; the dampers are distributed around the circumference of the flywheel energy storage device; the inner end of the damper is connected to the side of the flywheel energy storage device, and the outer end is connected to the side wall of the pit; the rubber buffer seat is installed at the center of the bottom of the flywheel energy storage device; the upper end of the rubber buffer seat is connected to the bottom of the flywheel energy storage device, and the lower end is connected to the bottom of the pit. The vibration isolation and damping device for the flywheel energy storage device also includes several support rods; the support rods are densely distributed at the bottom of the flywheel energy storage device; both ends of the support rods are connected to the bottom of the flywheel energy storage device and the bottom of the pit respectively through a spherical pair structure; a fixed sleeve is fitted on the upper end of the support rod; the upper end of the fixed sleeve is connected to the bottom of the flywheel energy storage device, and the lower end is provided with a through hole that matches the support rod; the support rod passes through the through hole; the structural strength of the fixed sleeve is weaker than the structural strength of the support rod.

2. The vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: The flywheel energy storage device has a horizontal lug on its side; the pit sidewall has a vertical lug; one end of the damper is hinged to the horizontal lug, and the other end is hinged to the vertical lug.

3. The vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: The damper is arranged radially along the flywheel energy storage device.

4. The vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: The support rod has a ball at its end; the flywheel energy storage device has an upper ball cup support at its bottom; the pit has a lower ball cup support at its bottom; the upper ball cup support and the lower ball cup support are connected to the spherical surface of the ball.

5. A vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: The inner wall of the fixed sleeve is tightly fitted with the upper ball cup support.

6. A vibration isolation and damping device for a flywheel energy storage device according to claim 4, characterized in that: The upper ball bowl support is equipped with an upper support column that connects to the flywheel energy storage device; the lower ball bowl support is equipped with a lower support column that connects to the bottom of the pit.

7. A vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: The through hole is located near the upper end of the support rod.

8. A vibration isolation and damping device for a flywheel energy storage device according to claim 2, characterized in that: The damper has a radially arranged vertical clamping plate at its outer end; this vertical clamping plate cooperates with the horizontal ear plate.

Images