Flexible resistor based on magnetic attraction type connection mode and design method

Abstract

This invention discloses a flexible resistor and its design method based on a magnetic connection, comprising a flexible conductive rubber resistor, an insulating tube, metal connectors at the resistor ends, a limiting non-magnetic metal sleeve, a strong magnet, and a connecting metal base. The flexible conductive rubber resistor is placed inside the insulating tube, with both ends extending a certain length and inserted into the metal connectors at the resistor ends. After appropriate heating, the ends of the insulating tube are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor to the metal connectors at both ends to form a single unit. Holes are opened at different positions in the insulating tube to allow external SF6 insulating gas to enter, improving the surface insulation capability of the flexible conductive rubber resistor. The magnetism of the strong magnet can be adjusted externally according to actual operating conditions to meet usage requirements. This invention offers long-term comprehensive benefits, a secure connection, reliable contact, low maintenance frequency, strong vibration resistance, and allows for quick installation and disassembly.

Description

Technical Field

[0001] This invention belongs to the field of pulse power technology, specifically relating to a flexible resistor based on a magnetic connection method and its design method. Background Technology

[0002] With the advancement of informatization, large-scale and highly integrated electronic devices are used in equipment and systems across various fields, leading to increasing attention being paid to electromagnetic pulse (EMP) damage and protection technologies. To make the experimental environment more realistic and incorporate the structural characteristics of the effector, higher demands are placed on simulator design, especially for long-distance mobile, high-altitude suspended EMP drive sources. Extremely high requirements are placed on weight, size, structure, device connection reliability, and ease of installation, inspection, and maintenance. EMP drive sources often use SF6 gas-insulated Marx generators as the primary energy storage system. For Marx generators with output voltages in the megavolt range, the number of stages and components is large. Without special design, this results in a large overall size and heavy weight, which is detrimental to the drive source's performance in high-altitude suspension and long-distance mobility.

[0003] Currently, to reduce weight and achieve a more compact structure, electromagnetic pulse simulators often incorporate charging resistors within limited space. While easily moldable rubber resistors are used in practical engineering, their bolted connections at both ends pose significant installation difficulties in confined spaces, compromising connection reliability and stability. This is especially problematic during long-distance mobile transport, where vibrations can easily loosen the bolts, requiring individual connection checks. For large Marx generators using hundreds of resistors, this drastically increases workload and reduces efficiency. Based on these considerations, a flexible resistor and its design method based on a magnetic connection have been invented, which is of great significance for the development of strong electromagnetic pulse simulation generation technology. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of better electrical performance, more reliable and stable connection, low installation, inspection and maintenance efficiency, and inconvenience of flexible resistors based on magnetic connection under the same working conditions of small space and difficulty in operation. Therefore, this invention provides a flexible resistor based on magnetic connection and its design method.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A flexible resistor based on a magnetic connection method includes a flexible conductive rubber resistor, an insulating tube, a metal connector for the resistor end, a limiting non-magnetic metal sleeve, a strong magnet, and a connecting metal base.

[0007] The flexible conductive rubber resistor is placed inside the insulating tube, with both ends extending a certain length and inserted into the metal connectors at the resistor ends. After the two ends of the insulating tube are appropriately heated, they are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor to the metal connectors at both ends of the resistor to form a whole. The insulating tube has openings at different positions to allow external SF6 insulating gas to enter, improving the surface insulation capability of the flexible conductive rubber resistor.

[0008] Flexible conductive rubber resistors are made by adding conductive fillers to an insulating rubber matrix. By adjusting the type, content, and composition of the added conductive fillers, different resistance values ​​per unit length can be achieved. They are easy to manufacture for resistors with different resistance values ​​required in engineering projects, and have excellent flexibility and elasticity, strong resistance to vibration and impact. Compared with other types of resistors, they are small in size and light in weight, making them convenient for use in narrow spaces and bending conditions.

[0009] The resistor end metal connector is made of a conductive material or other conductive metal material that can be attracted by a magnet. The end is connected to a conductive material that can be attracted by a magnet. The limiting non-magnetic metal sleeve is fitted at one end to the bottom of the resistor end metal connector and surrounds it, leaving a certain height to cover the strong magnet inside, thus playing a limiting role.

[0010] The connecting metal base material can be either magnetic or non-magnetic. When it is magnetic, it is directly connected to a strong magnet. When it is non-magnetic, it is fastened to a strong magnet using bolts, and then the magnetic metal material inside the limiting non-magnetic metal sleeve is combined with the strong magnet.

[0011] The magnetic strength of a strong magnet can be adjusted by external intervention according to the actual working conditions to meet the usage requirements.

[0012] A flexible resistor design method based on magnetic connection includes the following steps:

[0013] Step 1: The flexible conductive rubber resistor is placed inside the insulating tube, with both ends extending a certain length and inserted into the metal connectors at the resistor ends. After the two ends of the insulating tube are appropriately heated, they are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor to the metal connectors at both ends of the resistor to form a whole.

[0014] Step 2: Open holes at different positions in the insulating tube to allow external SF6 insulating gas to enter, thereby improving the surface insulation capability of the flexible conductive rubber resistor 1.

[0015] Step 3: The metal connector at the resistor end is made of a conductive material or other conductive metal material that can be attracted by a magnet. The end is connected to a conductive material that can be attracted by a magnet. One end of the non-magnetic metal sleeve is fitted around the bottom of the metal connector at the resistor end, and a certain height is left so that a strong magnet can be encased inside, which serves as a limiting function.

[0016] Step 4: The connecting metal base material can be either magnetic or non-magnetic. When it is magnetic, it is directly connected to the strong magnet. When it is non-magnetic, it is fastened to the strong magnet using bolts. Then, the magnetic metal material inside the limiting non-magnetic metal sleeve is combined with the strong magnet.

[0017] Step 5: The strength of the magnet can be adjusted by external intervention according to the actual working conditions to meet the usage requirements.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] 1. The flexible resistor with magnetic connection method in this invention uses a magnetic attraction method to replace the traditional plug-in or bolt connection method, which has high reliability, significant long-term comprehensive benefits, avoids problems such as loose connection and poor contact, reduces maintenance frequency, has strong vibration resistance, fast installation and disassembly speed, high efficiency and low failure rate. It is particularly easy to install in confined spaces and ensures reliable connection. At the same time, compared with traditional solid resistors and glass glaze film resistors, it is smaller in size and lighter in weight, and its dimensions and resistance value are easy to adjust. In particular, its plasticity makes it significantly advantageous under special working conditions.

[0020] 2. The limiting non-magnetic metal sleeve of the present invention can maximize the contact area between the metal connector at the resistor end and the strong magnet, thereby achieving a good electrical connection. On the other hand, the selection of non-magnetic material for the limiting non-magnetic metal sleeve can reduce the magnetic attraction effect when the metal sleeve first contacts the strong magnet during installation, which is beneficial to the connection between the strong magnet and the metal connector at the resistor end.

[0021] 3. The perforated design of the insulating tube in this invention allows the external SF6 gas insulating medium to diffuse around the flexible conductive rubber resistor, greatly improving its surface insulation capability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a flexible resistor based on a magnetic connection method and a design method according to an embodiment of the present invention.

[0023] Figure 2 This is a front view showing the connection of the various components of the flexible conductive rubber resistor in an embodiment of the present invention.

[0024] Figure 3This is a front view of the metal connector at the resistor end in an embodiment of the present invention.

[0025] Figure 4 This is a front view of the resistor terminal connector and base in an embodiment of the present invention.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1-Flexible conductive rubber resistor, 2-Insulating tube, 3-Metal connector for resistor end, 4-Limiting non-magnetic metal sleeve, 5-Strong magnet, 6-Connecting metal base. Detailed Implementation

[0028] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] like Figure 1 As shown, this embodiment provides a flexible resistor and its design method based on a magnetic connection, including a flexible conductive rubber resistor 1, an insulating tube 2, a metal connector for the resistor end 3, a limiting non-magnetic metal sleeve 4, a strong magnet 5, and a connecting metal base 6, etc.

[0030] A flexible conductive rubber resistor 1 is placed inside an insulating tube 2, with both ends extending a certain length and inserted into the metal connectors 3 at the resistor ends. After being appropriately heated, the ends of the insulating tube 2 are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor 1 to the metal connectors 3 at both ends to form a single unit. Holes are opened at different locations in the insulating tube 2 to allow external SF6 insulating gas to enter, improving the surface insulation capability of the flexible conductive rubber resistor 1. Based on the Marx generator parameters and structural design, a flexible conductive rubber resistor 1 with suitable resistance value and dimensions is selected as the charging resistor.

[0031] like Figure 2 , Figure 3 As shown, the metal connector 3 at the resistor end is made of a conductive material or other conductive metal material that can be attracted by a magnet. The end of the connector is connected to a conductive material that can be attracted by a magnet. The non-magnetic metal sleeve 4 is fitted around the bottom of the metal connector 3 at the resistor end and has a certain height to enclose the strong magnet 5 inside, thus playing a limiting role.

[0032] The design incorporates a flexible conductive rubber resistor 1 and a strong magnetic magnet 5, along with a suitable resistor end metal connector 3 and a limiting non-magnetic metal sleeve 4.

[0033] By selecting an insulating shell of appropriate size based on the dimensions of the flexible conductive rubber resistor 1, electrical isolation and a secure connection with the metal connector 3 at the resistor end can be achieved.

[0034] like Figure 4 As shown, the connecting metal base 6 can be made of magnetic or non-magnetic metal. When it is magnetic, it is directly connected to the strong magnet 5. When it is non-magnetic, it is fastened to the strong magnet 5 using bolts or other methods. Then, the magnetic metal material inside the limiting non-magnetic metal sleeve 4 is combined with the strong magnet 5 to achieve the desired result.

[0035] A suitable connecting metal base 6 is designed to connect to the capacitor, taking into account the structure of the capacitor used in the Marx generator.

[0036] The magnetism of the strong magnet 5 can be adjusted by external intervention according to the actual working conditions to meet the usage requirements.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A flexible resistor based on a magnetic connection method, comprising a flexible conductive rubber resistor, an insulating tube, a metal connector for the resistor ends, a limiting non-magnetic metal sleeve, a strong magnet, and a connecting metal base, characterized in that: The flexible conductive rubber resistor is placed inside the insulating tube, with both ends extending out and inserted into the metal connectors at the resistor ends. After being heated, the two ends of the insulating tube are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor to the metal connectors at both ends of the resistor end to form a whole.

2. The flexible resistor based on a magnetic connection method according to claim 1, characterized in that: A magnetic connection is achieved by using the magnetic force of a strong magnet to tightly connect the magnet to the metal connector at the resistor end; or, strong magnets of opposite polarities are installed on the metal connector at the resistor end so that two magnets of opposite polarities attract each other. The limiting sleeve prevents misalignment between the strong magnet and the metal connector, maximizing the contact area.

3. A flexible resistor based on a magnetic connection method according to claim 1, characterized in that: Flexible conductive rubber resistors are made by adding conductive fillers to an insulating rubber matrix. By adjusting the type and content of the conductive fillers, different resistance values ​​per unit length can be achieved.

4. A flexible resistor based on a magnetic connection method according to claim 1, characterized in that: The flexible conductive rubber resistor, insulating tube, and metal connector at the resistor end are integrated into a single unit, which facilitates docking with the connecting metal base and will not damage the flexible conductive rubber resistor substrate during installation, disassembly, or maintenance.

5. A flexible resistor based on a magnetic connection method according to claim 1, characterized in that: The insulating tube has openings at different locations to allow external SF6 insulating gas to enter, improving the surface insulation capability of the flexible conductive rubber resistor and simultaneously ensuring a firm fixation between the flexible conductive rubber resistor and the metal connector at the resistor end.

6. A flexible resistor based on a magnetic connection method according to claim 1 or 5, characterized in that: The insulating tube provides electrical isolation from surrounding components during the charging and discharging process of the flexible conductive rubber resistor.

7. A flexible resistor based on a magnetic connection method according to claim 1 or 3, characterized in that: Flexible conductive rubber resistors achieve electrical connections under different usage conditions through different molding processes; the connecting metal base is designed with various structures to accommodate the installation of different components.

8. A flexible resistor based on a magnetic connection method according to claim 1 or 2, characterized in that: The magnetic strength of a strong magnet can be adjusted by external intervention according to the actual working conditions to meet the usage requirements.

9. A flexible resistor design method based on a magnetic connection as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: The flexible conductive rubber resistor is placed inside the insulating tube, with both ends extending out and inserted into the metal connectors at the resistor ends. After heating, the two ends of the insulating tube are fitted over the metal connectors at both ends of the resistor, tightly connecting the flexible conductive rubber resistor to the metal connectors at both ends of the resistor ends to form a whole. Step 2: Open holes at different positions on the insulating tube to allow external SF6 insulating gas to enter, thereby improving the surface insulation capability of the flexible conductive rubber resistor. Step 3: The metal connector at the resistor end is made of a conductive material or other conductive metal material that can be attracted by a magnet. The end is connected to a conductive material that can be attracted by a magnet. One end of the non-magnetic metal sleeve is fitted around the bottom of the metal connector at the resistor end, and a certain height is left to cover the strong magnet inside, so as to play a limiting role. Step 4: Connect the metal base material, which can be either magnetic or non-magnetic. When it is magnetic, connect it directly to the strong magnet. When it is non-magnetic, use bolts to fasten it to the strong magnet. Then, combine the magnetic metal material inside the non-magnetic metal sleeve with the strong magnet. Step 5: Adjust the magnetic strength of the strong magnet by external intervention according to the actual working conditions to meet the usage requirements.

10. The flexible resistor design method based on magnetic connection according to claim 9, characterized in that, In step 1, the resistor is made by adding conductive filler to an insulating rubber matrix. By adjusting the type and content of the added conductive filler, different resistance values ​​per unit length can be achieved.

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