Vacuum sealing electrode for flywheel energy storage

Abstract

The utility model relates to the technical field of flywheel energy storage, and discloses a vacuum sealing electrode for flywheel energy storage, which comprises a conducting rod and an epoxy resin body arranged outside the conducting rod, a sealing ring is embedded in the left side surface of the epoxy resin body, and a plurality of through holes are formed in the upper surface of the epoxy resin body. Positioning bolts movably penetrate through the interiors of the multiple through holes; the whole body formed by the conducting rod and the epoxy resin body is small in resistance and high in sealing performance, and media inside and outside the electrode are isolated, so that the working current is large, the working voltage is high, and the long-time charging and discharging requirements of the flywheel are met; the epoxy resin body is cured outside the conducting rod, the conducting rod and the epoxy resin body form a whole with certain pressure resistance and sealing performance through the annular sealing groove in the surface of the rod body and the cohesiveness of epoxy resin glue, the sealing effect is good, and the cost is low. A rotation stopping section is processed on the rod body, so that leakage caused by relative rotation of the conducting rod and the epoxy resin body is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flywheel energy storage, in particular to a vacuum sealed electrode for flywheel energy storage. Background Art

[0002] The flywheel energy storage system is an energy storage device that converts electromechanical energy. It uses physical methods to achieve energy storage. Through the electric / generating reciprocal bidirectional motor, the electrical energy and the mechanical kinetic energy of the high-speed rotating flywheel are converted and stored. It also interfaces with different types of loads through frequency modulation, rectification, and constant voltage.

[0003] During energy storage, electrical energy is converted through the power converter to drive the motor, which drives the flywheel to accelerate. The flywheel stores the energy in the form of kinetic energy, completing the energy storage process of converting electrical energy into mechanical energy. The energy is stored in the high-speed rotating flywheel body; after that, the motor maintains a constant speed until it receives a control signal for energy release; during energy release, the high-speed rotating flywheel drags the motor to generate electricity, and the power converter outputs the current and voltage suitable for the load, completing the energy release process of converting mechanical energy into electrical energy. The entire flywheel energy storage system realizes the input, storage and output process of electrical energy.

[0004] In order to obtain higher conversion efficiency and reduce friction loss and wind loss of the flywheel rotor, the flywheel rotor and motor both work in a sealed high-vacuum casing, and the motor needs to be connected to the outside through a through-plate electrode. The vacuum-sealed electrodes currently used on the market are mostly sealed by glass sintering, which is expensive and the operating current and operating voltage may not meet the requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum sealed electrode for flywheel energy storage to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A vacuum sealed electrode for flywheel energy storage comprises a conductive rod and an epoxy resin body mounted on the outside of the conductive rod. A sealing ring is embedded in the left surface of the epoxy resin body, and a plurality of through holes are formed on the upper surface of the epoxy resin body. Positioning bolts are movably passed through the interiors of the plurality of through holes.

[0008] As a further solution of the present invention: the conductive rod includes a rod body, a locking detent is provided at one end of the rod body, and a plurality of positioning holes are provided on the front surface of the other end of the rod body, a plurality of annular sealing grooves are provided on the outer surface of the rod body, and anti-rotation cut surfaces are provided on the left and right side surfaces of the rod body at positions facing a positioning hole.

[0009] As a further solution of the present invention: the outer surface of the conductive rod is attached to the inner surface of the epoxy resin body, and the sealing ring is a component made of elastic material.

[0010] As a further solution of the present invention: the number of the through holes is equal to the number of the positioning holes, and the through holes are directly opposite to the positioning holes, and the positioning bolts are threadedly connected to the inside of the positioning holes.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The conductive rod and epoxy resin body of the utility model have low overall resistance and high sealing, which effectively isolates the medium inside and outside the electrode. It has large working current and high working voltage, which can meet the long-term charging and discharging requirements of the flywheel.

[0013] 2. The epoxy resin body is cured on the outside of the conductive rod. The annular sealing groove on the surface of the rod body and the adhesion of the epoxy resin glue make the conductive rod and the epoxy resin body form a whole with certain pressure resistance and sealing properties. The sealing effect is good, the installation is simple, and it can be mass-produced at low cost.

[0014] 3. The rod body is processed with a rotation-stopping surface to prevent the conductive rod and the epoxy resin body from rotating relative to each other and causing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a vacuum sealed electrode for flywheel energy storage;

[0016] Figure 2 A cross-sectional view of a vacuum sealed electrode for flywheel energy storage;

[0017] Figure 3 This is a left view of a vacuum sealed electrode for flywheel energy storage;

[0018] Figure 4 This is a schematic diagram of the structure of a conductive rod in a vacuum sealed electrode for flywheel energy storage;

[0019] Figure 5 for Figure 4 Middle AA section view;

[0020] Figure 6 for Figure 5 Middle BB cross-section;

[0021] Figure 7 for Figure 4 Middle CC section view;

[0022] Figure 8 This is a schematic diagram of the actual use structure of a vacuum sealed electrode for flywheel energy storage.

[0023] In the figure: 1. Conductive rod; 2. Epoxy resin body; 3. Sealing ring; 4. Through hole; 5. Positioning bolt; 6. Rod body; 7. Locking offset; 8. Annular sealing groove; 9. Anti-rotation cut surface; 10. Positioning hole; 11. Cable. DETAILED DESCRIPTION

[0024] See also Figures 1 to 8 In an embodiment of the present invention, a vacuum sealed electrode for flywheel energy storage comprises a conductive rod 1 and an epoxy resin body 2 installed on the outside of the conductive rod 1, the outer surface of the conductive rod 1 is fitted to the inner surface of the epoxy resin body 2, a sealing ring 3 is embedded and installed on the left surface of the epoxy resin body 2, the sealing ring 3 is a component made of elastic material, a plurality of through holes 4 are provided on the upper surface of the epoxy resin body 2, a positioning bolt 5 is movably passed through the interior of the plurality of through holes 4, the conductive rod 1 comprises a rod body 6, a locking detent 7 is provided at one end of the rod body 6, and a plurality of positioning holes 10 are provided on the front surface of the other end of the rod body 6, the number of the through holes 4 is equal to the number of the positioning holes 10, and the through holes 4 are directly opposite to the positioning holes 10, the positioning bolt 5 is threadedly connected to the interior of the positioning hole 10, a plurality of annular sealing grooves 8 are provided on the outer surface of the rod body 6, and a rotation-stopping cut surface 9 is provided on the left and right side surfaces of the rod body 6 at a position directly opposite to a positioning hole 10;

[0025] The material of the sealing ring 3 is preferably rubber; the raw material of the epoxy resin body 2 is placed in the mold, and after curing and molding, it is fixed to the outside of the conductive rod 1 and integrated with the conductive rod 1. The overall resistance formed by the conductive rod 1 and the epoxy resin body 2 is small, which meets the requirements of higher working current and working voltage; the left end of the epoxy resin body 2 is located on the outside of the sealing ring 3 and is provided with multiple fixing holes; the annular sealing groove 8 strengthens the sealing and firmness between the conductive rod 1 and the epoxy resin body 2, effectively isolating the medium inside and outside the electrode, which can avoid safety problems such as electric shock and reduce the occurrence of leakage problems, meeting the requirements of higher working current and working voltage; the cable is inserted into the end of the rod body 6 close to the positioning hole 10, and the positioning bolt 5 is used to tighten the cable; the anti-rotation cut surface 9 prevents the conductive rod 1 and the epoxy resin body 2 from relative rotation, resulting in leakage;

[0026] The cable is connected to the stator of the flywheel motor, and the end of the epoxy resin body 2 away from the cable is connected to the flywheel's sealed high vacuum shell. The inside of the flywheel's sealed high vacuum shell is a vacuum environment, and the outside is an atmospheric environment.

[0027] The working principle of the present utility model is as follows: the conductive rod 1 is fixed on the glue pouring mold, the evenly stirred epoxy resin glue is poured into the mold, and the epoxy resin glue is demoulded after being cured to obtain a combination of the conductive rod 1 and the epoxy resin body 2. The annular sealing groove 8 on the rod body 6 plus the adhesion of the epoxy resin glue make the conductive rod 1 and the epoxy resin body 2 form a whole with certain pressure resistance and sealing. The rod body 6 is processed with a positioning hole 10. When the cable is inserted, the positioning bolt 5 passes through the through hole 4 and is screwed into the positioning hole 10 to compress the cable to prevent the cable from loosening or virtual connection. After being cured in the mold, the epoxy resin body 2 is provided with an O-ring sealing groove and a fixing hole. The entire vacuum sealing electrode is fixed to the flywheel closed high vacuum shell of the flywheel energy storage device through the fixing hole on the epoxy resin body 2, and is sealed with a sealing ring.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum sealed electrode for flywheel energy storage, characterized in that: The invention comprises a conductive rod (1) and an epoxy resin body (2) installed outside the conductive rod (1), wherein a sealing ring (3) is embedded and installed on the left surface of the epoxy resin body (2), and a plurality of through holes (4) are opened on the upper surface of the epoxy resin body (2), and positioning bolts (5) are movably passed through the interiors of the plurality of through holes (4).

2. A vacuum sealed electrode for flywheel energy storage according to claim 1, characterized in that: The conductive rod (1) comprises a rod body (6), one end of the rod body (6) is provided with a locking detent (7), and the front surface of the other end of the rod body (6) is provided with a plurality of positioning holes (10), the outer surface of the rod body (6) is provided with a plurality of annular sealing grooves (8), and the left and right side surfaces of the rod body (6) are provided with anti-rotation cut surfaces (9) at positions facing a positioning hole (10).

3. A vacuum sealed electrode for flywheel energy storage according to claim 1, characterized in that: The outer surface of the conductive rod (1) is attached to the inner surface of the epoxy resin body (2), and the sealing ring (3) is a component made of elastic material.

4. A vacuum sealed electrode for flywheel energy storage according to claim 2, characterized in that: The number of the through holes (4) is equal to the number of the positioning holes (10), and the through holes (4) are directly opposite to the positioning holes (10), and the positioning bolts (5) are threadedly connected to the inside of the positioning holes (10).

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