New type superconducting energy storage magnet based on superconducting tape transposition weaving and corresponding weaver

Abstract

The application discloses a novel superconducting energy storage magnet based on transposition weaving of superconducting tapes and a weaver thereof, and belongs to the technical field of high-temperature superconducting energy storage magnets. The novel superconducting energy storage magnet is composed of a ring-shaped insulator framework and a plurality of superconducting tapes which are transpositionally woven on the framework by the weaver. The upper and lower surfaces of the framework are horizontal planes, and a plurality of magnets can be stacked to form a large magnet. The ring-shaped structure of the novel superconducting energy storage magnet confines most of the magnetic field inside the magnet, significantly reduces the magnetic leakage and electromagnetic pollution during operation, and the transpositionally woven tapes have the characteristics of uniform current carrying, low alternating current loss and high current carrying capacity, and the alternating current loss under the vertical magnetic field is also obviously reduced. Different from other transposition methods, the application does not need to cut the superconducting tapes in advance, avoids damage and waste of the tapes, and further improves the utilization rate of the superconducting tapes. Since the weaving method is relatively complex, a corresponding weaver is designed to assist the weaving.

Description

Technical Field

[0001] This invention relates to a novel superconducting energy storage magnet structure and belongs to the field of superconducting energy storage magnet technology. Background Technology

[0002] With increasing global awareness of environmental protection, green and low-carbon transformation has become an unavoidable development trend across all sectors of society. However, the intermittent and fluctuating characteristics of renewable energy generation, as well as the poor anti-interference capabilities of grid-connected equipment, pose serious challenges to the safety and stability of renewable energy power systems. As an important means of reducing renewable energy curtailment, energy storage technology stores energy during off-peak hours and releases it during peak hours. By rapidly charging and discharging, it reduces the volatility caused by renewable energy grid connection, thereby improving the stability of power system operation.

[0003] Currently, superconducting magnetic energy storage (SMES) is the most widely researched form of superconducting energy storage worldwide. Its principle involves using multiple sets of superconducting coils wound from superconducting tape, connected in series and parallel to form a solenoid or ring-shaped core component. When current flows through, a very strong magnetic field is generated. Due to the zero-resistance, high-density current-carrying characteristics of superconductivity, energy can be stored losslessly for extended periods. A superconducting magnetic energy storage system (SMES) mainly consists of five key components: a superconducting magnet, a control system, a converter, a protection system, and a cryogenic system. Among these, the superconducting magnet is the core component, responsible for storing electromagnetic energy, and is therefore also called the energy storage magnet.

[0004] However, the commonly used double-pane structure in superconducting energy storage magnets cannot completely confine the generated magnetic field inside the magnet, resulting in some of the magnetic field being distributed outside the magnet and interfering with the operation of surrounding equipment. Furthermore, because the magnetic field is concentrated inside the magnet, and the critical current density of the superconducting material is significantly affected by the magnetic field environment, the inner strips in the double-pane superconducting energy storage magnet have a lower critical current density, creating a significant bottleneck effect. To address these issues, this patent proposes an innovative superconducting energy storage magnet structure. This design, by transposing and weaving superconducting strips onto a ring-shaped skeleton to form a ring magnet structure, effectively confines most of the magnetic field inside the magnet, reducing the impact of the magnetic field on the external environment. Moreover, the positions of each strip within the magnet are completely equivalent, avoiding the bottleneck effect. The completely transposed weaving method enhances the mechanical properties of the magnet, improves the current distribution, and reduces the decay of the critical current. Summary of the Invention

[0005] To address the aforementioned problems and improvement needs, the present invention adopts the following technical solution: A novel superconducting energy storage magnet based on superconducting tape transposition weaving and the corresponding weaving device include: The ring-shaped insulating frame has horizontal surfaces on both the top and bottom, which facilitates the stable stacking of multiple magnets after the magnets are woven, forming more complex magnets. A superconducting tape woven from multiple strands of a wound skeleton in a transposition, wherein the superconducting tape converts electrical energy into magnetic energy and stores it in a magnetic field when charged. Because superconducting materials have the characteristics of zero resistance and high current carrying capacity in the superconducting state, they can be stored for a long time without loss, and have the characteristics of high conversion efficiency and fast response speed. The braider can be divided into two equal parts. When combined, the braider has holes in the middle. The size of the holes matches the size of the annular insulating frame. When braiding, the two parts are combined into the annular insulating frame. The braider is equipped with a spool and a slider that are installed and drive the strip to move. The strip is pulled out from the spool and evenly fixed to the annular insulating frame to start braiding.

[0006] Furthermore, the superconducting tape will be spirally wound in clockwise and counterclockwise directions respectively, interleaving and exchanging positions with each other, ultimately forming a new type of magnet structure that abandons the traditional "layer" structure.

[0007] Furthermore, the braider consists of two identical parts for quick disassembly and reassembly during braiding, nested on the annular insulating skeleton.

[0008] Each part of the braiding device is structured in three layers: (1) A semi-circular base for mounting other parts, wherein the base is provided with a gear shaft for placing the gear set and screw holes for fixing the outermost layer.

[0009] (2) A gear set that drives the strip to move by rotation, wherein the gear set is designed with grooves for placing the slider and the bobbin that are directly connected to the strip.

[0010] (3) The inner and outer constraint and the steering device are used to control the slider to turn. The constraint and the steering device make the slider move in an approximate circular motion in the braid while continuously moving in the radial direction, thereby realizing the interlocking and replacement between the sliders, and then realizing the interlocking and replacement of the strip. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a ring-shaped insulating frame structure.

[0012] Figure 2 This is a schematic diagram of the complete braiding device structure.

[0013] Figure 3 This is a schematic diagram of a half-braiding device.

[0014] Figure 4 This is a schematic diagram of the base structure of the braiding machine.

[0015] Figure 5 This is a schematic diagram of the gear set structure of the braiding machine.

[0016] Figure 6 This is a schematic diagram of the process of a braider weaving a magnet onto a ring-shaped insulating frame.

[0017] Figure 7 This represents the trajectory of the slider within the weaver.

[0018] Figure 8 This is a schematic diagram showing the slider about to change direction in the weaver.

[0019] Figure 9 This is a schematic diagram showing the slider turning in the weaver.

[0020] Figure 10 This is a schematic diagram of an energy storage magnet structure made by winding twenty strips of material. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] Example 1 refer to Figure 1 A ring-shaped insulating frame, wherein the upper part is perpendicular to the frame axis and the lower part is designed to be horizontal, so that multiple magnets can be stacked stably after the magnets are woven to form more complex magnets.

[0024] refer to Figures 2-5 A braiding tool specifically designed for weaving this type of superconducting energy storage magnet. Figure 2 The schematic diagram of the braider shown in the image contains six gears, twelve sliders and spools, which can be used to braid a superconducting energy storage magnet composed of twelve strips. However, in actual production, different numbers of strips can be braided by increasing or decreasing the number of gears, sliders and spools, thereby producing superconducting energy storage magnets of different sizes. The weaver can be disassembled into two identical parts, such as Figure 3 As shown, two identical parts can be combined into a whole by snaps. When combined, the braid has holes in the middle, and the size of the holes matches the size of the annular insulating skeleton. The braiding structure is divided into three layers, such as Figures 2-5 As shown: (1) A circular base for mounting other parts, wherein the base is provided with a gear shaft for placing a gear set and screw holes for fixing the outermost layer.

[0025] (2) A gear set that drives the strip to move by rotation, wherein the gear set is designed with grooves for placing the slider and the bobbin that are directly connected to the strip.

[0026] (3) A limiter and a steering device for controlling the slider to turn. The limiter and the steering device make the slider move in an approximate circular motion in the braider while continuously reciprocating along the radial direction, thereby realizing the interlocking and replacement between the sliders, and thus realizing the interlocking and replacement of the strip. refer to Figures 6-9 The specific steps and principles of braiding on a ring-shaped insulating frame using a braiding device are as follows: Before starting to weave the magnet, such as Figure 6 As shown, the strip is completely wound into the spool of the braider, then the braider is disassembled and nested on the annular insulating frame. Then one end of the strip is pulled out from the spool and fixed at equal intervals on the annular insulating frame. This is called the beginning of the strip. When starting to braid the magnets, use manual labor or a small motor to drive the gear set of the braiding machine to rotate, such as... Figure 7 As shown, the slider mounted on the gear set will perform an approximately circular motion with the braider axis as the center, while simultaneously reciprocating along the radial direction of the braider. Depending on the position of the slider on the gear set, the slider will be divided into two groups that perform the above-mentioned movements in counterclockwise and clockwise directions respectively, thereby driving the bobbin and the strip to perform the above-mentioned movements and complete repositioning braiding. During the braiding, the braider is slowly moved away from the beginning of the strip along the annular insulating skeleton to ensure that the strip can evenly and completely cover the skeleton. Furthermore, the key principles of the braiding machine require additional explanation: such as Figure 5 As shown, each gear has four slider grooves. When the slider is installed in the slider groove, it can slide into or out of the gear radially. Taking a slider that moves counterclockwise as an example, ... Figure 8 As shown, before reaching the junction of the two gears, the slider moves in a circular motion with the gears. To ensure that the slider does not slip off the gears during this process, therefore... Figure 2 The limit switch shown restricts the movement of the slider. like Figure 9 As shown, when the slider reaches the junction of the two gears, the slider grooves of the two gears are aligned, providing space for the slider to move to the next gear. To ensure that the slider can enter the next gear normally instead of continuing to make circular motion along the current gear, a steering gear is installed. The steering angle on the steering gear squeezes the slider, forcing it to turn and enter the next gear, thereby realizing the continuous interleaving and repositioning of the slider.

[0027] Figure 10 The diagram shows a toroidal transposition superconducting energy storage magnet woven using twenty strips with the aid of a braider equipped with twenty sliders.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel superconducting energy storage magnet based on superconducting tape transposition weaving and a corresponding weaving device, characterized in that, include: The ring-shaped insulating frame has horizontal surfaces on both the top and bottom, which facilitates the stable stacking of multiple magnets after the magnets are woven, forming more complex magnets. A superconducting tape woven from multiple strands of a wound skeleton in a transposition, wherein the superconducting tape converts electrical energy into magnetic energy and stores it in a magnetic field when charged. Because superconducting materials have the characteristics of zero resistance and high current carrying capacity in the superconducting state, they can be stored for a long time without loss, and have the characteristics of high conversion efficiency and fast response speed. The braider can be divided into two equal parts. When combined, the braider has holes in the middle. The size of the holes matches the size of the annular insulating frame. When braiding, the two parts are combined into the annular insulating frame. The braider is equipped with a spool and a slider that are installed and drive the strip to move. The strip is pulled out from the spool and evenly fixed to the annular insulating frame to start braiding.

2. The novel superconducting energy storage magnet based on superconducting tape transposition weaving and the corresponding braiding device according to claim 1, characterized in that, The superconducting tape will be equally divided into two groups, one group named the clockwise group and the other group named the counterclockwise group. When winding the magnet, the two groups of tape are first wound into the spools of the braider, and then the tape is pulled out from the spools and fixed at equal intervals on the annular insulating frame. With the assistance of the braider, the tape is spirally wound on the frame in the clockwise and counterclockwise directions respectively, and interleaved and interchanged, so that the position of each tape in the magnet is completely equal.

3. A novel superconducting energy storage magnet based on superconducting tape transposition weaving and the corresponding braiding device according to claim 2, characterized in that, The strips will be wound in clockwise and counterclockwise spirals respectively, interlocking and changing positions to ultimately form a new type of magnet structure that abandons the traditional "layer" structure.

4. A novel superconducting energy storage magnet based on superconducting tape transposition weaving and a corresponding weaving device according to claim 2, characterized in that, The braider consists of two identical parts, designed for quick disassembly and reassembly during braiding, nested within the annular insulating skeleton.

5. A novel superconducting energy storage magnet based on superconducting tape transposition weaving and a corresponding weaving device according to claim 2, characterized in that, The braiding structure consists of three layers: (1) A circular base for mounting other parts, wherein the base is provided with a gear shaft for placing a gear set and screw holes for fixing the outermost layer; (2) A gear set that drives the strip to move by rotation, wherein the gear set is designed with grooves for placing the slider and the bobbin that are directly connected to the strip; (3) A limiter and a steering device for controlling the slider to turn. The limiter and the steering device make the slider move in an approximate circular motion in the braider while continuously reciprocating along the radial direction, thereby realizing the interlocking and replacement between the sliders, and thus realizing the interlocking and replacement of the strip.

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