Coaxial gas discharge tube

Abstract

This invention discloses a coaxial gas discharge tube, specifically relating to the field of gas discharge tubes. The coaxial gas discharge tube includes an outer conductive electrode, an inner conductive electrode, and upper and lower insulating sheets. Both the outer and inner conductive electrodes are cylindrical. The inner conductive electrode is located inside the outer conductive electrode and is coaxially arranged. The upper and lower insulating sheets are fixed to the two ends of the outer and inner conductive electrodes, respectively, forming a sealed space. The coaxial gas discharge tube of this invention, with its coaxial inner and outer conductive electrode structure, can achieve a larger discharge electrode surface area within the same volume. It also offers greater flexibility in adjusting the internal sealed space and the size of the discharge electrodes, facilitating the adjustment of the operating voltage, and achieving higher surge current conduction capability within a smaller volume.

Description

Technical Field

[0001] This invention relates to the field of gas discharge tube technology, and more specifically, to a coaxial gas discharge tube. Background Technology

[0002] Gas discharge tubes are commonly used lightning surge protection devices in power and electronic systems. Their surge characteristics directly affect the protection effect. When the voltage across the gas discharge tube is less than the breakdown voltage of the gas, the inert gas inside will not be broken down, and it can be considered as an open circuit. When the voltage across the discharge tube is greater than the breakdown voltage, the gas between the two stages is ionized due to the high voltage, the discharge tube is broken down, and it changes from the original high insulation resistance state to a low resistance conduction state, conducting a large current to the ground, thereby protecting downstream equipment from surge damage.

[0003] Existing gas discharge tubes consist of a circular insulating shell brazed to conductive electrodes at both ends to form a sealed space filled with inert gas. The end faces of the two conductive electrodes' central protruding ends face each other, forming the main discharge gap. This structure requires increasing the end face area to achieve a large current-carrying capacity, thus increasing the overall volume of the discharge tube and making it impossible to achieve high current-carrying capacity in a small volume. Summary of the Invention

[0004] The coaxial gas discharge tube provided by this invention aims to solve the problem that existing gas discharge tubes cannot achieve high current throughput in a small volume.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coaxial gas discharge tube, comprising an outer conductive electrode, an inner conductive electrode, an upper insulating sheet, and a lower insulating sheet. Both the outer and inner conductive electrodes are cylindrical. The inner conductive electrode is located inside the outer conductive electrode and is coaxially arranged. The upper and lower insulating sheets are respectively fixed to the two ends of the outer and inner conductive electrodes, forming a sealed space. The sealed space is filled with hydrogen and / or an inert gas. The middle portion of the inner surface of the outer conductive electrode has a first convex frustum, which forms the outer discharge electrode. The middle portion of the outer surface of the inner conductive electrode has a second convex frustum, which forms the inner discharge electrode. The gap between the cylindrical surface of the inner discharge electrode and the cylindrical surface of the outer discharge electrode is annular.

[0006] In a preferred embodiment, the middle part of the inner conductive electrode is a hollow structure or a lead-out structure. When the middle part of the inner conductive electrode is a lead-out structure, the lead-out structure extends outward from both ends of the inner conductive electrode.

[0007] In a preferred embodiment, the inner discharge electrode and the outer discharge electrode are both continuous frustums or discontinuous frustums. When the inner discharge electrode and the outer discharge electrode are both discontinuous frustums, the number of discontinuous frustums of the inner discharge electrode and the outer discharge electrode are equal, and the discontinuous frustums of the inner discharge electrode and the discontinuous frustums of the outer discharge electrode are arranged facing each other.

[0008] In a preferred embodiment, the number of internal discharge electrodes and external discharge electrodes are equal, and the number of internal discharge electrodes and external discharge electrodes is one or more.

[0009] In a preferred embodiment, the cylindrical surfaces of the inner discharge electrode and the outer discharge electrode are smooth, or protrusions are arranged on both the cylindrical surfaces of the inner discharge electrode and the outer discharge electrode, thereby forming irregular shapes on the cylindrical surfaces of the inner discharge electrode and the outer discharge electrode.

[0010] In a preferred embodiment, the internal discharge electrode and the external discharge electrode are arranged coaxially.

[0011] In a preferred embodiment, the coaxial gas discharge tube further includes a sealing structure, which includes a receiving component and a plugging component. When the upper and lower insulating sheets are installed at the ends of the outer conductive electrode and the inner conductive electrode, the side of the outer conductive electrode and the inner conductive electrode adjacent to the upper or lower insulating sheet is the receiving surface, and the side of the upper and lower insulating sheets adjacent to the outer or inner conductive electrode is the plugging surface. The receiving component is installed on the receiving surface, and the plugging component is installed on the plugging surface.

[0012] In a preferred embodiment, the receiving component includes a fixing ring and an inner hook. The fixing ring is fixedly installed on the receiving surface, and the inner hook is fixed on the fixing ring. The end of the inner hook has a hook portion.

[0013] In a preferred embodiment, the plug-in component includes a second fixing ring and an outer hook. The second fixing ring is fixedly installed on the plug-in surface, and the outer hook is fixed on the second fixing ring. The end of the outer hook has a second hook portion. When the plug-in component is inserted into the receiving component, the second hook portion hooks onto the outside of the first hook portion.

[0014] In a preferred embodiment, the receiving component further includes a plurality of spring tabs disposed circumferentially on a surface of the fixing ring, wherein when the insertion component is inserted into the receiving component, the spring tabs are supported on the bottom of the outer hook.

[0015] The technical effects and advantages of this invention are as follows: The coaxial gas discharge tube of this invention adopts a structure of inner and outer coaxial conductive electrodes, which can obtain a larger discharge electrode surface within the same volume; at the same time, it is more flexible in adjusting the internal sealed space and the size of the discharge electrodes, which is beneficial for adjusting the operating voltage, and can obtain higher surge current conduction capability in a small volume; the coaxial structure also makes the installation form of the discharge tube more diversified, which can be used in more confined spaces, and brings excellent surge protection capability to the circuit. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0021] Figure 6 This is a structural schematic diagram of Embodiment 5 of the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of Embodiment Six of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of Embodiment Seven of the present invention.

[0024] Figure 9 This is a schematic diagram of the structure of Embodiment 8 of the present invention.

[0025] Figure 10 This is a schematic diagram of the sealing structure of the present invention installed in the structure of Embodiment 1.

[0026] Figure 11 For the present invention Figure 10 A partial structural diagram.

[0027] Figure 12 This is a schematic diagram of the sealing structure of the present invention installed in the structure of Embodiment Six.

[0028] Figure 13 This is a schematic diagram of the sealing structure of the present invention installed in the structure of Embodiment Seven.

[0029] Figure 14 This is an exploded view of the sealing structure of the present invention.

[0030] The attached figures are labeled as follows: 1. External conductive electrode; 2. Internal conductive electrode; 21. Hollow structure; 22. Lead-out structure; 3. Internal discharge electrode; 4. External discharge electrode; 5. Upper insulating sheet; 6. Lower insulating sheet; 7. Protrusion; 8. Sealing structure; 81. Fixing ring one; 82. Inner hook; 821. Hook one; 83. Fixing ring two; 84. Outer hook; 841. Hook two; 85. Spring piece; 9. Sealed space. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Refer to the instruction manual appendix Figures 1-9 A coaxial gas discharge tube includes an outer conductive electrode 1, an inner conductive electrode 2, an upper insulating sheet 5, and a lower insulating sheet 6. Both the outer conductive electrode 1 and the inner conductive electrode 2 are cylindrical. The inner conductive electrode 2 is located inside the outer conductive electrode 1 and the outer conductive electrode 1 and the inner conductive electrode 2 are coaxially arranged. The upper insulating sheet 5 and the lower insulating sheet 6 are respectively fixed to the two ends of the outer conductive electrode 1 and the inner conductive electrode 2, so that the outer conductive electrode 1, the inner conductive electrode 2, the upper insulating sheet 5, and the lower insulating sheet 6 form a sealed space 9, which is filled with hydrogen and / or inert gas. The middle part of the inner surface of the outer conductive electrode 1 has a raised frustum I, which forms the outer discharge electrode 4. The middle part of the outer surface of the inner conductive electrode 2 has a raised frustum II, which forms the inner discharge electrode 3. The inner discharge electrode 3 and the outer discharge electrode 4 are coaxially arranged, so that the gap between the cylindrical surface of the inner discharge electrode 3 and the cylindrical surface of the outer discharge electrode 4 is annular.

[0033] When the voltage between the external conductive electrode 1 and the internal conductive electrode 2 is less than the breakdown voltage of the gas, the inert gas in the sealed space 9 will not be broken down, and the gas discharge tube will be in a high impedance state, which can be considered as an open circuit. When the voltage across the discharge tube is greater than the breakdown voltage, the internal discharge electrode 3 and the external discharge electrode 4 discharge, the discharge tube is broken down, and the gas discharge tube will be in a conductive state, which can be considered as a short circuit. This allows the large current to be conducted to the ground, thereby protecting the downstream equipment from surge damage.

[0034] This coaxial gas discharge tube adopts a structure of internal and external coaxial conductive electrodes, which can obtain a larger discharge electrode end face within the same volume. At the same time, it is more flexible in adjusting the size of the internal sealed space 9 and the discharge electrode, which is beneficial for adjusting the operating voltage. It can also achieve higher surge current conduction capability in a small volume. The coaxial structure also makes the installation form of the discharge tube more diverse, which can be used in more confined spaces, and brings excellent surge protection capability to the circuit.

[0035] In addition, the gap between the cylindrical surface of the inner discharge electrode 3 and the cylindrical surface of the outer discharge electrode 4 is annular. The advantage of this is that when the cylindrical surface of the inner discharge electrode 3 and the cylindrical surface of the outer discharge electrode 4 are discharging, the discharge occurs within the entire annular area. The entire cylindrical surface can discharge, and the discharge area is larger, giving this coaxial gas discharge tube a stronger protective effect.

[0036] Example 1: As Figure 2 As shown, in this embodiment, the middle part of the inner conductive electrode 2 is a hollow structure 21, which is a circular hole. The axis of the circular hole is also coaxial with the outer conductive electrode 1 and the inner conductive electrode 2.

[0037] Example 2: Figure 3 As shown, in this embodiment, the middle part of the inner conductive electrode 2 is a lead-out structure 22. When the middle part of the inner conductive electrode 2 is a lead-out structure 22, the lead-out structure 22 extends outward from both ends of the inner conductive electrode 2. The lead-out structure 22 extending to both ends is also coaxial with the outer conductive electrode 1 and the inner conductive electrode 2. This lead-out structure 22 can be conveniently used to connect wires.

[0038] Example 3: Figure 4 As shown, in this embodiment, the number of internal discharge electrodes 3 and external discharge electrodes 4 are equal, and the number of internal discharge electrodes 3 and external discharge electrodes 4 is one or more. It should be noted that... Figure 4 In this design, three internal discharge electrodes 3 and three external discharge electrodes 4 are provided. The number is not limited to one or three; it can be two, four, five, six, etc. The distance between adjacent internal discharge electrodes 3 or adjacent external discharge electrodes 4 is equal, ensuring a one-to-one correspondence between each internal discharge electrode 3 and external discharge electrode 4. By providing multiple internal discharge electrodes 3 and multiple external discharge electrodes 4, the discharge area can be increased without changing the size of the coaxial gas discharge tube, thereby achieving a greater current carrying capacity. In this embodiment, the discharge area is increased by changing the number of internal discharge electrodes 3 and external discharge electrodes 4.

[0039] Example 4: Figure 5As shown, in this embodiment, the discharge area is increased by changing the width of the inner discharge electrode 3 and the outer discharge electrode 4 to obtain a greater current carrying capacity and improve the electrical characteristics of the discharge tube.

[0040] Example 5: Figure 6 As shown, in this embodiment, protrusions 7 are arranged on both the cylindrical surface of the inner discharge electrode 3 and the cylindrical surface of the outer discharge electrode 4, thereby forming irregular shapes on the cylindrical surfaces of the inner discharge electrode 3 and the outer discharge electrode 4. This results in multiple discharge tips between the two end faces, making discharge easier. It should also be noted that the cylindrical surfaces of the inner discharge electrode 3 and the outer discharge electrode 4 are not limited to irregular shapes; they can also be smooth cylindrical surfaces.

[0041] Example 6: Figure 7 As shown, in this embodiment, the width of the outer conductive electrode 1 is shorter than that of the inner conductive electrode 2. Specifically, the length of the outer conductive electrode 1 at both ends of the outer discharge electrode 4 is shorter than that at both ends of the inner conductive electrode 2. At this time, the upper insulating sheet 5 and the lower insulating sheet 6 are both cylindrical, that is, the edges of the upper insulating sheet 5 and the lower insulating sheet 6 extend towards the end of the outer conductive electrode 1 so as to be fixed with the outer conductive electrode 1.

[0042] Example 7: Figure 8 As shown, in this embodiment, the outer conductive electrode 1 and the inner conductive electrode 2 are arranged coaxially and alternately. Specifically, the inner discharge electrode 3 and the outer discharge electrode 4 remain aligned. The upper end of the outer conductive electrode 1 is cut off at the position of the outer discharge electrode 4, and the lower end of the inner conductive electrode 2 is cut off at the position of the inner discharge electrode 3, thereby forming a coaxially alternating arrangement structure. The shapes of the corresponding upper insulating sheet 5 and lower insulating sheet 6 are also changed accordingly. The edge of the upper insulating sheet 5 extends downward to be fixed with the outer conductive electrode 1, and the middle part of the lower insulating sheet 6 extends upward to be fixed with the inner discharge electrode 3.

[0043] Example 8: As Figure 9 As shown, in this embodiment, the inner discharge electrode 3 and the outer discharge electrode 4 are both continuous frustums or discontinuous frustums. When both the inner discharge electrode 3 and the outer discharge electrode 4 are discontinuous frustums, the number of discontinuous frustums of the inner discharge electrode 3 and the outer discharge electrode 4 are equal, and the discontinuous frustums of the inner discharge electrode 3 and the discontinuous frustums of the outer discharge electrode 4 are arranged facing each other. It should be noted that a continuous frustum is a ring structure, while a discontinuous frustum is formed by uniformly opening slots on the basis of a continuous frustum.

[0044] Example 9: The upper insulating sheet 5 and the lower insulating sheet 6 are brazed. During brazing, the brazing filler metal is melted by adding liquid and enters the gap between the upper insulating sheet 5, the lower insulating sheet 6, the outer conductive electrode 1, and the inner conductive electrode 2 through capillary action, thereby achieving the welding purpose. However, during welding heating, the gas in the sealed space 9 expands due to heat, increasing the pressure. It is easy to leak from the gap during the welding process. After cooling after welding, the internal pressure decreases, the discharge stability deteriorates, and the discharge performance of the gas discharge tube is affected. Therefore, the following improvements are made to this coaxial gas discharge tube.

[0045] Specifically, the coaxial gas discharge tube also includes a sealing structure 8, which includes a receiving component and a plugging component. When the upper insulating sheet 5 and the lower insulating sheet 6 are installed at the ends of the outer conductive electrode 1 and the inner conductive electrode 2, the side of the outer conductive electrode 1 and the inner conductive electrode 2 adjacent to the upper insulating sheet 5 or the lower insulating sheet 6 is the receiving surface, and the side of the upper insulating sheet 5 and the lower insulating sheet 6 adjacent to the outer conductive electrode 1 or the inner conductive electrode 2 is the plugging surface. The receiving component is installed on the receiving surface, and the plugging component is installed on the plugging surface.

[0046] It should be noted that, as Figures 2-6 and Figure 9 As shown, for Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5 and Embodiment 8, at the mounting locations of the upper insulating sheet 5 and the outer conductive electrode 1 and the inner conductive electrode 2, and at the mounting locations of the lower insulating sheet 6 and the outer conductive electrode 1 and the inner conductive electrode 2, the receiving surface is the cylindrical surface of the outer conductive electrode 1 and the inner conductive electrode 2, while the insertion surface is the plane of the upper insulating sheet 5 located inside the sealed space 9 and the plane of the lower insulating sheet 6 located inside the sealed space 9.

[0047] like Figure 7 As shown, in Embodiment Six, at the mounting locations of the upper insulating sheet 5 and the outer conductive electrode 1 and the inner conductive electrode 2, and at the mounting locations of the lower insulating sheet 6 and the outer conductive electrode 1 and the inner conductive electrode 2, the receiving surface is the cylindrical surface of the outer conductive electrode 1 and the inner conductive electrode 2, and the insertion surface is the cylindrical surface inside the upper insulating sheet 5 and the lower insulating sheet 6, as well as the plane inside the upper insulating sheet 5 and the lower insulating sheet 6.

[0048] like Figure 8 As shown, in Embodiment 7, at the mounting locations of the upper insulating sheet 5 and the outer conductive electrode 1, and at the mounting locations of the lower insulating sheet 6 and the inner conductive electrode 2, the receiving surface is the upper end face of the outer conductive electrode 1 and the lower end face of the inner conductive electrode 2, and the insertion surface is the cylindrical surface inside the upper insulating sheet 5 and the lower insulating sheet 6.

[0049] like Figures 10-14 As shown, the receiving component includes a fixing ring 81 and an inner hook 82. The fixing ring 81 is fixedly installed on the receiving surface, and the inner hook 82 is fixed on the fixing ring 81. The end of the inner hook 82 has a hook portion 821. The insertion component includes a fixing ring 83 and an outer hook 84. The fixing ring 83 is fixedly installed on the insertion surface, and the outer hook 84 is fixed on the fixing ring 83. The end of the outer hook 84 has a hook portion 841. When the insertion component is inserted into the receiving component, the hook portion 841 hooks onto the outside of the hook portion 821. The hook portion 841 is conical, and the end of the inner hook 82 near the outer hook 84 narrows inward. The fixing ring 81, inner hook 82, fixing ring 83, and outer hook 84 are all annular structures.

[0050] When installing the upper insulating sheet 5 and the lower insulating sheet 6, align the upper insulating sheet 5 and the lower insulating sheet 6 at the ends of the outer conductive electrode 1 and the inner conductive electrode 2. During alignment, as follows: Figure 11 As shown, the outer hook 84 presses downwards against the hook part 821, causing the hook part 821 to elastically deform inwards, thus hooking the second hook 841 inside the hook part 821. To ensure a tighter connection between the hook part 821 and the second hook 841, several spring pieces 85 can be arranged circumferentially on the surface of the fixing ring 81. When the insertion component is inserted into the receiving component, the spring pieces 85 support the bottom of the outer hook 84. Thus, after the outer hook 84 is inserted, the spring pieces 85 can push the outer hook 84 upwards, allowing the second hook 841 and the first hook 821 to hook tightly together. During welding, the gas in the sealed space 9 expands, pushing against the upper insulating sheet 5 and the lower insulating sheet 6. Under the action of this force, the hook part 821 and the second hook 841 hook tighter and tighter, and the clamping force increases, thus preventing gas leakage from the gaps and ensuring the discharge performance of the gas discharge tube.

[0051] It should be further noted that, before hook part 1 821 and hook part 2 841 are connected, sealant can be applied to the inside of hook part 2 841. This allows for a seal when hook part 2 841 and hook part 1 821 are hooked together, improving the sealing performance. The sealant used can be polyurethane sealant or epoxy resin sealant.

[0052] It should be noted that when the insertion surface is a cylindrical surface, the inner hook 82 is installed on the side wall of the cylindrical surface, and the end of the outer hook 84 away from the hook part 841 is bent outward so that it can be fixed with the fixing ring 83.

[0053] It is also important to note that, Figure 10 Therefore Figure 2 Taking Example 1 as an example, the installation of the sealing structure 8 in Examples 1, 2, 3, 4, 5 and 8 will be described. Figure 12 This is an example of the installation of sealing structure 8 in Embodiment 6. Figure 13 This is an example of the installation of the sealing structure 8 in Embodiment 7.

[0054] In conclusion, 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coaxial gas discharge tube, characterized in that: It includes an outer conductive electrode (1), an inner conductive electrode (2), an upper insulating sheet (5), and a lower insulating sheet (6). The outer conductive electrode (1) and the inner conductive electrode (2) are both cylindrical. The inner conductive electrode (2) is located inside the outer conductive electrode (1) and the outer conductive electrode (1) and the inner conductive electrode (2) are coaxially arranged. The upper insulating sheet (5) and the lower insulating sheet (6) are respectively fixed at both ends of the outer conductive electrode (1) and the inner conductive electrode (2), so that the outer conductive electrode (1), the inner conductive electrode (2), the upper insulating sheet (5), and the lower insulating sheet (6) form a closed space (9). The closed space (9) is filled with hydrogen and / or inert gas. The middle part of the inner surface of the outer conductive electrode (1) has a raised frustum I, which forms an outer discharge electrode (4). The middle part of the outer surface of the inner conductive electrode (2) has a raised frustum II, which forms an inner discharge electrode (3). The gap between the cylindrical surface of the inner discharge electrode (3) and the cylindrical surface of the outer discharge electrode (4) is annular.

2. The coaxial gas discharge tube according to claim 1, characterized in that: The middle part of the inner conductive electrode (2) is a hollow structure (21) or a lead-out structure (22). When the middle part of the inner conductive electrode (2) is a lead-out structure (22), the lead-out structure (22) extends outward from both ends of the inner conductive electrode (2).

3. The coaxial gas discharge tube according to claim 1, characterized in that: The inner discharge electrode (3) and the outer discharge electrode (4) are both continuous frustums or discontinuous frustums. When the inner discharge electrode (3) and the outer discharge electrode (4) are both discontinuous frustums, the number of discontinuous frustums of the inner discharge electrode (3) and the outer discharge electrode (4) are equal, and the discontinuous frustums of the inner discharge electrode (3) and the discontinuous frustums of the outer discharge electrode (4) are arranged facing each other.

4. The coaxial gas discharge tube according to claim 1, characterized in that: The number of internal discharge electrodes (3) and external discharge electrodes (4) are equal, and the number of internal discharge electrodes (3) and external discharge electrodes (4) is one or more.

5. The coaxial gas discharge tube according to claim 1, characterized in that: The cylindrical surfaces of the inner discharge electrode (3) and the outer discharge electrode (4) are smooth, or protrusions (7) are arranged on both the cylindrical surfaces of the inner discharge electrode (3) and the outer discharge electrode (4), thereby forming irregular shapes on the cylindrical surfaces of the inner discharge electrode (3) and the outer discharge electrode (4).

6. The coaxial gas discharge tube according to claim 1, characterized in that: The internal discharge electrode (3) and the external discharge electrode (4) are coaxially arranged.

7. The coaxial gas discharge tube according to claim 1, characterized in that: The coaxial gas discharge tube also includes a sealing structure (8), which includes a receiving component and a plugging component. When the upper insulating sheet (5) and the lower insulating sheet (6) are installed at the ends of the outer conductive electrode (1) and the inner conductive electrode (2), the side of the outer conductive electrode (1) and the inner conductive electrode (2) adjacent to the upper insulating sheet (5) or the lower insulating sheet (6) is the receiving surface, and the side of the upper insulating sheet (5) and the lower insulating sheet (6) adjacent to the outer conductive electrode (1) or the inner conductive electrode (2) is the plugging surface. The receiving component is installed on the receiving surface, and the plugging component is installed on the plugging surface.

8. The coaxial gas discharge tube according to claim 7, characterized in that: The receiving component includes a fixing ring (81) and an inner hook (82). The fixing ring (81) is fixedly installed on the receiving surface, and the inner hook (82) is fixed on the fixing ring (81). The end of the inner hook (82) has a hook portion (821).

9. The coaxial gas discharge tube according to claim 8, characterized in that: The plug-in component includes a second fixing ring (83) and an outer hook (84). The second fixing ring (83) is fixedly installed on the plug-in surface, and the outer hook (84) is fixed on the second fixing ring (83). The end of the outer hook (84) has a second hook (841). When the plug-in component is inserted into the receiving component, the second hook (841) hooks onto the outside of the first hook (821).

10. The coaxial gas discharge tube according to claim 9, characterized in that: The receiving component also includes several spring pieces (85) arranged in the circumferential direction on the surface of the fixing ring (81). When the plug-in component is inserted into the receiving component, the spring pieces (85) are supported on the bottom of the outer hook (84).

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