Vibration isolation and reduction device for flywheel energy storage device

Abstract

The invention relates to a vibration isolation and reduction device for a flywheel energy storage device. The vibration isolation and reduction device for the flywheel energy storage device comprises 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 with the side surface of the flywheel energy storage device, and the outer end is connected with the pit side wall; the rubber buffer seat is mounted in the center of the bottom of the flywheel energy storage device; the upper end of the rubber buffer seat is connected with the bottom of the flywheel energy storage device. According to the flywheel energy storage device, vibration in the horizontal direction and the vertical direction is reduced through the damper and the rubber buffering base, and overall vibration isolation of the flywheel energy storage device is formed.

Description

Technical Field

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

[0002] A flywheel energy storage device is a device that uses a high-speed rotating flywheel to store energy. It stores kinetic energy by rotating the rotor vertically at high speed in a low-friction environment, including a flywheel, a motor, a bearing system, and an energy conversion system. When charging, the motor acts as an electric motor to accelerate the flywheel and convert electrical energy into mechanical energy; when discharging, the motor acts as a generator to convert the mechanical energy of the flywheel back into electrical energy. The biggest threat to the high-speed vertically rotating rotor is the vibration from the horizontal direction; the vibration from the horizontal direction acts on the flywheel energy storage device, causing the flywheel energy storage device to tilt, the rotor cannot rotate vertically normally, and the rotation consumption is also increased; therefore, the flywheel energy storage device is generally installed in a pit, and a rubber cushion is used at the bottom of the flywheel energy storage device to buffer the vibration from the ground. However, this type of vibration reduction measure has a good vibration reduction effect on external vertical vibration, but it is not effective for horizontal vibration reduction. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a vibration isolation and reduction device for a flywheel energy storage device.

[0004] The technical solution of the present invention is: a vibration isolation and reduction device for a flywheel energy storage device 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 damper reduces vibrations in the horizontal direction from the outside world; the circumferentially distributed dampers can reduce vibrations in all horizontal directions of the outside world; 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 reduces vibrations in the vertical direction from the outside world; the damper and the rubber buffer seat reduce vibrations 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 certain vibrations when working; the damper and the rubber buffer seat can reduce vibrations and dissipate energy of the vibrations generated by the flywheel energy storage device itself.

[0005] Preferably, a horizontal ear plate is provided on the side of the flywheel energy storage device; a vertical ear plate is provided on the side wall of the pit; 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 cooperates with the vertical ear plate to buffer and absorb vibrations from various directions of the side wall of the pit.

[0006] Furthermore, the horizontal ear plates and the vertical ear plates are symmetrically arranged with respect to the damper, which can ensure the connection stability of the damper.

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

[0008] Preferably, a vibration isolation and reduction device for a flywheel energy storage device also includes a plurality of support rods; the support rods are densely distributed at the bottom of the flywheel energy storage device; the two ends of the support rods are connected to the bottom of the flywheel energy storage device and the bottom of the pit through spherical substructures respectively; the support rods strengthen the support of the ground to the flywheel energy storage device; a fixed sleeve is sleeved 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 matching the support rod; the support rod passes through the through hole; the structural strength of the fixed sleeve is weaker than that of the support rod; but the through hole of the fixed sleeve can It 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 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 rods 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.

[0009] Furthermore, a sphere is provided at the end of the support rod; an upper ball bowl support is provided at the bottom of the flywheel energy storage device; a lower ball bowl support is installed at the bottom of the pit; the upper ball bowl support and the lower ball bowl support 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 inner wall of the fixed sleeve is tightly matched with the upper ball bowl support, which can increase 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 connected to the flywheel energy storage device, so that the upper ball bowl support maintains a considerable distance from the bottom of the flywheel energy storage device; the upper ball bowl support and the sphere have sufficient wrap angle; the lower ball bowl support is provided with a lower support column connected to the bottom of the pit, so that the lower ball bowl support maintains a considerable distance from the bottom of the pit; the lower ball bowl support and the sphere have sufficient wrap angle.

[0012] Furthermore, the through hole is arranged close to the upper end of the support rod, so that the fixing sleeve is more easily damaged.

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

[0014] The beneficial effects of the present invention are as follows: the vibration isolation and reduction device for a flywheel energy storage device of the present invention has the following advantages: (1) The damper and rubber buffer seat of the present invention respectively reduce vibrations in the horizontal and vertical directions, thereby forming an overall vibration isolation for the flywheel energy storage device. On the other hand, the flywheel energy storage device itself will also generate certain vibrations when working; the damper and rubber buffer seat can reduce vibration and dissipate energy of the vibrations generated by the flywheel energy storage device itself. (2) The structural strength of the fixed sleeve of the present invention is weaker than that of the support rod; however, the through hole of the fixed sleeve can ensure that all the support rods are in a vertical state, thus 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 the external vibration, and the rubber buffer seat in the center is also damaged and fails due to the 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a vibration isolation and reduction device for a flywheel energy storage device of the present invention; Figure 2 yes Figure 1 AA section view; Figure 3 yes Figure 1 I magnified view of; Figure 4 yes Figure 1 II enlarged view; Figure 5 is a three-dimensional diagram of the damper; Figure 6 is a three-dimensional diagram of the support; In the figure: 01. flywheel energy storage device, 011. horizontal ear plate, 012. upper ball bowl support, 0121. upper support column, 02. pit, 021. vertical ear plate, 022. lower ball bowl 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 DESCRIPTION

[0016] Example 1: See Figure 1-6A vibration isolation and reduction device for a flywheel energy storage device comprises 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 damper 2 reduces vibrations in the horizontal direction from the outside; the circumferentially distributed dampers 2 can reduce vibrations in all horizontal directions of 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 reduces vibrations in the vertical direction from the outside; the damper 2 and the rubber buffer seat 1 respectively reduce vibrations in the horizontal and vertical directions to form an 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 working; the damper 2 and the rubber buffer seat 1 can reduce vibration and dissipate energy of the vibrations generated by the flywheel energy storage device 01 itself; there are 8 dampers 2 in this embodiment.

[0017] Compared with the prior art, the damper 2 and the rubber buffer seat 1 of the present invention respectively reduce vibrations in the horizontal direction and the vertical direction, forming an overall vibration isolation of the flywheel energy storage device 01 .

[0018] A horizontal ear plate 011 is provided on the side of the flywheel energy storage device 01; a vertical ear plate 021 is provided on the side wall of the pit 02; 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 cooperates with the vertical ear plate 021 to buffer and absorb vibrations from various directions of the side wall of the pit 02.

[0019] The horizontal ear plate 011 and the vertical ear plate 021 are both symmetrically arranged with respect to the damper 2 , which can ensure the connection stability of the damper 2 .

[0020] The damper 2 is arranged along the radial direction of the flywheel energy storage device 01 , and has the best vibration reduction effect on the horizontal vibration pointing to the axis of the flywheel energy storage device 01 .

[0021] A vibration isolation and reduction device for a flywheel energy storage device also includes a plurality of support rods 3; the support rods 3 are densely distributed at the bottom of the flywheel energy storage device 01; the two 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 through a spherical substructure; the support rods 3 strengthen the ground's support for the flywheel energy storage device 01; the upper end of the support rod 3 is sleeved with a fixed sleeve 4; 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 matching 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 that of the support rod 3; but the through hole 41 of the fixed sleeve 4 The hole 41 can ensure that all the 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 the external vibration, and the rubber buffer seat 1 in the center is also damaged and fails due to the horizontal vibration. At this time, under the coordinated action of the dampers 2 around and the support rods 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 is in a stable state again; the internal structure of the flywheel energy storage device 01 is protected to the greatest extent.

[0022] The flywheel energy storage device 01 is installed with a sensor; the sensor is a downward photoelectric sensor or a distance measuring sensor, which is used to detect whether the flywheel energy storage device 01 falls or is horizontally dislocated; when the sensor is a photoelectric sensor, a photosensitive sheet is provided at the bottom of the pit 02, and when the flywheel energy storage device 01 falls and is horizontally dislocated, the photoelectric sensor can detect the horizontal dislocation and send out an electrical signal; the distance measuring sensor sends out distance measuring photoelectric signals to the outside; once the flywheel energy storage device 01 falls, the value detected by the distance measuring sensor changes; once the change exceeds a certain range, the distance measuring sensor sends out an electrical signal; when the sensor sends out an electrical signal, the controller stops the power supply of the flywheel energy storage device 01, thereby reducing the internal structural damage caused by the fall of the flywheel energy storage device 01.

[0023] A sphere 31 is provided at the end of the support rod 3; an upper ball bowl support 012 is provided at the bottom of the flywheel energy storage device 01; a lower ball bowl support 022 is installed at the bottom of the pit 02; the upper ball bowl support 012 and the lower ball bowl support 022 are spherically connected to the sphere 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.

[0024] The inner wall of the fixed sleeve is tightly matched with the upper ball bowl support 012, which can increase the connection stability between the fixed sleeve and the flywheel energy storage device 01.

[0025] The upper ball bowl support 012 is provided with an upper support column 0121 connected to the flywheel energy storage device 01, so that the upper ball bowl support 012 maintains a considerable distance from the bottom of the flywheel energy storage device 01; the upper ball bowl support 012 and the sphere 31 have a sufficient wrap angle; the lower ball bowl support 022 is provided with a lower support column 0221 connected to the bottom of the pit 02, so that the lower ball bowl support 022 maintains a considerable distance from the bottom of the pit 02; the lower ball bowl support 022 and the sphere 31 have a sufficient wrap angle.

[0026] A radially arranged vertical clamping plate 21 is provided at the outer end of the damper 2; the vertical clamping plate 21 cooperates with the horizontal ear plate 011 to limit the vertical swing range of the damper 2, thereby ensuring that the damper 2 fully absorbs external horizontal vibrations.

[0027] The working principle of this embodiment: the damper 2 reduces vibrations in the horizontal direction from the outside world; the circumferentially distributed dampers 2 can reduce vibrations in all horizontal directions from the outside world; the rubber buffer seat 1 reduces vibrations in the vertical direction from the outside world; the damper 2 and the rubber buffer seat 1 reduce vibrations in the horizontal and vertical directions respectively, forming the 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 working; the damper 2 and the rubber buffer seat 1 can reduce vibrations and dissipate energy of the vibrations generated by the flywheel energy storage device 01 itself; the horizontal ear plate 011 cooperates with the vertical ear plate 021 to buffer and absorb vibrations from various directions on 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 the 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 is in a stable state again; the internal structure of the flywheel energy storage device 01 is protected to the greatest extent.

[0028] Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The difference is that the through hole 41 is arranged close to the upper end of the support rod 3, so that the fixing sleeve is more easily damaged.

Claims

1. A vibration isolation and reduction device for a flywheel energy storage device, characterized in that: It comprises a rubber buffer seat and at least three horizontally arranged dampers; the dampers are distributed around the circumference of a 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 a 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.

2. A vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: A horizontal ear plate is arranged on the side of the flywheel energy storage device; a vertical ear plate is arranged on the side wall of the pit; one end of the damper is hinged to the horizontal ear plate, and the other end is hinged to the vertical ear plate.

3. A 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. A vibration isolation and damping device for a flywheel energy storage device according to claim 1, characterized in that: It also includes a plurality of support rods; the support rods are densely distributed at the bottom of the flywheel energy storage device; the two ends of the support rods are respectively connected to the bottom of the flywheel energy storage device and the bottom of the pit through spherical substructures; the upper end of the support rod is sleeved with a fixed sleeve; 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.

5. A vibration isolation and reduction device for a flywheel energy storage device according to claim 4, characterized in that: A sphere is arranged at the end of the support rod; an upper ball bowl support is arranged at the bottom of the flywheel energy storage device; a lower ball bowl support is installed at the bottom of the pit; and the upper ball bowl support and the lower ball bowl support are connected with the spherical surface pair of the sphere.

6. A vibration isolation and reduction device for a flywheel energy storage device according to claim 4, characterized in that: The inner wall of the fixed sleeve is tightly matched with the upper ball bowl support.

7. A vibration isolation and damping device for a flywheel energy storage device according to claim 5, characterized in that: The upper ball bowl support is provided with an upper support column connected to the flywheel energy storage device; the lower ball bowl support is provided with a lower support column connected to the bottom of the pit.

8. The vibration isolation and damping device for a flywheel energy storage device according to claim 4, characterized in that: The through hole is arranged near the upper end of the support rod.

9. A vibration isolation and reduction device for a flywheel energy storage device according to claim 2, characterized in that: The outer end of the damper is provided with a radially arranged vertical clamping plate; the vertical clamping plate is matched with the horizontal ear plate.

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