A high-voltage coaxial cable cone connector for an electron beam generator

Abstract

The present application relates to the technical field of electron beam welding, and relates to a high-voltage coaxial cable conical connector for an electron beam generator, which comprises a high-voltage coaxial cable, a conical connecting structure, a conductive assembly, a fastening assembly and a sealing assembly. The high-voltage coaxial cable comprises first to third conductors and corresponding high-voltage PE insulating layers from inside to outside, which are used for high-voltage, grid bias and filament output respectively. The conductive assembly realizes electrical connection, the fastening assembly comprises a joint end cover and other components, and the sealing assembly guarantees sealing. The present application has a reasonable structure, improves the insulation, fastening and sealing performance, and ensures stable operation of the electron beam generator.

Description

Technical Field

[0001] This invention relates to the field of electron beam welding technology, and specifically to a high-voltage coaxial cable tapered connector for electron beam generators. Background Technology

[0002] Electron beam welding is a special process that uses a high-energy electron beam as an energy carrier to fuse materials in a vacuum environment; its energy density can reach 10^6 kilometres per second. 7 ~10 9 W / cm 2 It has technical advantages such as deep penetration (up to 150mm for steel materials), low thermal deformation (heat-affected zone reduced by more than 70%), and high purity (vacuum environment to prevent oxidation). This technology is widely used in aerospace (such as helicopter components and satellite fuel tanks), deep-sea equipment (titanium alloy welding of the 'Fendouzhe' manned submersible), and nuclear energy equipment (sealing welding of nuclear power components).

[0003] High-voltage coaxial cable tapered connectors are the main connection link between high-voltage power supplies and electron beam generators. Their function is to transmit the high voltage generated by the high-voltage power supply to the electron beam generator, providing the necessary energy for the electron beam generator. Because the transmitted voltage is very high, there are high requirements for the insulation performance and withstand voltage of the high-voltage cable to ensure safe and stable transmission of electrical energy and guarantee the normal operation of the entire system.

[0004] However, existing high-voltage coaxial cable tapered connectors have many technical defects that make it difficult to meet the needs of practical applications: insufficient insulation performance, unable to withstand high voltage, and prone to leakage and breakdown; weak electromagnetic compatibility, poor anti-interference, affecting surrounding equipment; unreasonable structural design, easily damaging the insulation layer during tightening, loose fit easily causing short circuits, large conductor processing errors leading to poor fit, overheating and aging; unreliable electrical connection, poor contact, high resistance, causing circuit instability; poor sealing performance, easily allowing air to enter and causing short circuits. Summary of the Invention

[0005] To address the problems of the prior art, this invention provides a high-voltage coaxial cable tapered connector for electron beam generators.

[0006] The objective of this invention can be achieved through the following technical solution: a high-voltage coaxial cable tapered connector for an electron beam generator, comprising: a high-voltage coaxial cable, tapered connection structures disposed at both ends of the high-voltage coaxial cable, conductive components for achieving electrical connection, fastening components for fastening connection, and sealing components;

[0007] The high-voltage coaxial cable comprises, from the inside out, a first conductor, a first high-voltage PE insulation layer, a second conductor, a second high-voltage PE insulation layer, a third conductor, and a third high-voltage PE insulation layer. The first conductor is used for high-voltage output, the second conductor is used for grid deflection output, and the third conductor is used for filament output.

[0008] The conductive component is disposed on the tapered connection structure and is electrically connected to the first conductor, the second conductor and the third conductor;

[0009] The fastening and sealing assembly includes a connector end cap, a connector sleeve, a hexagonal nut, a cable positioning wedge, a baffle, and a disc spring, all fitted onto the outside of the high-voltage coaxial cable.

[0010] The sealing assembly is disposed on the tapered connection structure.

[0011] In a further improvement, the conductive component includes a high-voltage ring, a clamping cone sleeve, a grid biasing ring, a grid biasing clamping ring, a filament ring, a filament clamping ring, and a contact spring disposed on the tapered connection structure. The end of the first conductor is disposed inside the high-voltage ring and fixed by the clamping cone sleeve. The end of the second conductor is disposed outside the grid biasing clamping ring and fixed by the grid biasing ring. The end of the third conductor is disposed inside the filament clamping ring and fixed by the filament ring. Three sets of contact springs are disposed, and the three sets of contact springs are respectively sleeved on the annular grooves of the high-voltage ring, the grid biasing ring, and the filament ring.

[0012] In a further improvement, the high-voltage coaxial cable also includes a semiconductor wrapping tape, a thermoplastic outer half-layer, a copper tape shielding layer, and a PVC sheath outer protective layer. The semiconductor wrapping tape is made of a single polyimide film, and the thermoplastic outer half-layer is made of a mixture of cross-linked polyethylene, EPDM rubber, and conductive carbon black.

[0013] In a further improvement, the second conductor is a 16-spindle 6 / 0.15mm copper wire braided shielded conductor, and the third conductor is a 24-spindle 8 / 0.15mm copper wire braided shielded conductor.

[0014] In a further improvement, a ceramic ring one is provided between the high-voltage ring and the grid bias ring, and a ceramic ring two is provided between the grid bias ring and the filament ring.

[0015] In a further improvement, the tapered connection structure includes, from right to left, a conductive component mounting section, a sealing section, and a fastening section. The conductive component is mounted on the conductive component mounting section, the sealing component is sleeved on the sealing section, and the fastening sealing component is mounted on the fastening section.

[0016] As a further improvement, a positioning sleeve is provided between the fastening component and the sealing component.

[0017] Further improvements include an intelligent monitoring device, which includes an ultra-high frequency sensor, a partial discharge acquisition device, a monitoring host, and a PLC control system. The ultra-high frequency sensor is fixed to the end, intermediate joint, or grounding wire of the cable body. The partial discharge acquisition device is connected to the ultra-high frequency sensor and is used to amplify, filter, and digitize the acquired signal. The monitoring host is connected to the partial discharge acquisition device and is used to analyze and judge the processed signal. The PLC control system is connected to the monitoring host and is used to control the electron beam welding equipment to stop when an abnormality is detected.

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

[0019] 1. The high-voltage coaxial cable of the present invention optimizes the material combination and thickness ratio of polyethylene insulation layer, semiconductor wrapping tape and extruded thermoplastic outer half layer through multi-layer gradient composite insulation design, so as to achieve precise control of electric field distribution, reduce the risk of partial discharge and insulation breakdown under high voltage, and improve the overall insulation reliability; the tapered insulation structure further optimizes the electric field distribution through gradual thickness design, and reduces local field strength concentration.

[0020] 2. The conical structure of this invention fits tightly with the cable and has a self-centering function, facilitating quick and accurate installation; three sets of back-to-back butterfly springs provide continuous clamping force to ensure that the connector remains firmly connected when subjected to mechanical stresses such as tension and vibration, protecting the contact surface and reducing wear; precision manufacturing technology ensures the fitting accuracy of each component, improving connection safety and stability;

[0021] 3. The conical contact spring of the present invention is made of beryllium bronze plated with silver, which has good conductivity, elasticity and corrosion resistance, and provides stable contact pressure; the high voltage ring and the clamping cone sleeve, the grid bias ring and the grid bias clamping ring, and the filament ring and the filament clamping ring clamp the corresponding conductors respectively through interference fit, which has low contact resistance, reduces power loss and heat generation, and ensures stable transmission of high voltage, grid bias and filament signals;

[0022] 4. The second conductor, the third conductor, and the copper strip shielding layer of the present invention form a multi-layer shielding system, which can block the electromagnetic interference of the internal high voltage signal to the outside world, and resist the influence of the external electromagnetic environment, ensuring the stable operation of the equipment in a complex electromagnetic environment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the tapered connection structure of the present invention;

[0025] Figure 3 This is a partial cross-sectional view of the present invention;

[0026] Figure 4 This is a partial cross-sectional view of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the conductive component of the present invention;

[0028] Figure 6 This is a cross-sectional view of the conductive component of the present invention during assembly;

[0029] Figure 7 This is a schematic diagram of the fastening assembly of the present invention;

[0030] Figure 8 A cross-sectional view of a high-voltage power supply or electron beam generator socket;

[0031] Figure 9 This is a cross-sectional view of the present invention when assembled with a high-voltage power supply or electron beam generator socket.

[0032] In the diagram, 1. High-voltage coaxial cable; 11. First conductor; 12. First high-voltage PE insulation layer; 13. Second conductor; 14. Second high-voltage PE insulation layer; 15. Third conductor; 16. Third high-voltage PE insulation layer; 17. Semiconductor wrapping tape; 18. Extruded thermoplastic outer half-layer; 19. Copper tape shielding layer; 20. PVC sheath outer protective layer; 2. Tapered connection structure; 21. Conductive component mounting section; 22. Sealing section; 23. 3. Fastening section; 31. Conductive component; 32. High voltage ring; 33. Clamping cone sleeve; 34. Grid offset ring; 35. Grid offset clamping ring; 36. Filament ring; 37. Filament clamping ring; 38. Contact finger spring; 39. Ceramic ring one; 40. Ceramic ring two; 41. Fastening component; 42. Connector end cap; 43. Connector clamp; 44. Hexagonal nut; 45. Cable positioning wedge; 46. Baffle plate; 5. Sealing component; 6. Positioning sleeve. Detailed Implementation

[0033] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] The following is a description of the embodiments and appendices. Figures 1-9 The technical solution of the present invention will be further described below.

[0036] Example 1

[0037] A high-voltage coaxial cable tapered connector for an electron beam generator includes: a high-voltage coaxial cable 1, tapered connection structures 2 disposed at both ends of the high-voltage coaxial cable, a conductive component 3 for realizing electrical connection, a fastening component 4 for fastening connection, and a sealing component 5.

[0038] The high-voltage coaxial cable 1 includes, from the inside out, a first conductor 11, a first high-voltage PE insulation layer 12, a second conductor 13, a second high-voltage PE insulation layer 14, a third conductor 15, and a third high-voltage PE insulation layer 16. The first conductor is used for high-voltage output, the second conductor is used for grid deflection output, and the third conductor is used for filament output.

[0039] The conductive component 3 is disposed on the tapered connection structure 2 and is electrically connected to the first conductor 11, the second conductor 13 and the third conductor 15;

[0040] The fastening and sealing assembly 4 includes a connector end cap 41, a connector sleeve 42, a hexagonal nut 43, a cable positioning wedge 44, a baffle 45, and a disc spring 46, all sleeved on the outside of the high-voltage coaxial cable 1.

[0041] The sealing component 5 is disposed on the tapered connection structure 2.

[0042] like Figures 1-9 As shown, the assembly process of the present invention is as follows:

[0043] First, the high-voltage coaxial cable 1 is processed according to specifications, exposing the first conductor 11, the second conductor 13, the third conductor 15, and the ends of each insulation layer, ensuring that the conductors are undamaged and the edges of the insulation layers are flat. Second, the conductive component 3 is installed on the tapered connection structure 2, so that the conductive component 3 forms an electrical connection with the first conductor 11, the second conductor 13, and the third conductor 15 respectively, ensuring that each connection point has tight contact. Third, the connector end cap 41 is fitted onto the outside of the high-voltage coaxial cable 1, so that it fits against the surface of the cable insulation layer. A baffle 45 and a disc spring 46 are sequentially installed on the outside of the connector end cap 41 (the disc springs 46 are arranged in a preset number). (Section), then place the cable positioning wedge 44 on the corresponding position of the high-voltage coaxial cable 1, and clamp the positioning wedge with the connector clamp 42 to ensure that the wedge is tightly fitted with the cable. After completing the above steps, install the hexagonal nut 43 to cooperate with the connector clamp 42 and tighten it to the preset torque to complete the assembly of the fastening component 4. Finally, fix the sealing component 5 on the tapered connection structure 2 to ensure that the sealing component fits tightly with the tapered connection structure without gaps. After one end is assembled, repeat the above steps to complete the assembly of the tapered connection structure 2, conductive component 3, fastening component 4 and sealing component 5 at the other end of the high-voltage coaxial cable 1.

[0044] The usage process of this invention is as follows:

[0045] First, align the tapered connection structures 2 at both ends of the connector with the corresponding interfaces of the electron beam generator and the high-voltage power supply to ensure accurate positioning. Second, tighten the hexagonal nut 43 to ensure that the tapered connection structure 2 fits tightly with the equipment interface. Use the elasticity of the disc spring 46 to compensate for assembly errors and ensure a firm connection. During assembly, the sealing component 5 fits against the equipment interface to ensure reliable sealing and prevent external impurities from entering.

[0046] Based on the above assembly and usage process, the present invention has the following beneficial effects:

[0047] 1. The high-voltage coaxial cable 1 adopts a multi-layer PE insulation structure (first high-voltage PE insulation layer 12, second high-voltage PE insulation layer 14, and third high-voltage PE insulation layer 16). By reasonably designing the thickness of each insulation layer, it can stably withstand a working voltage of 150kV and reserve a 20% withstand voltage margin (up to 180kV), effectively avoiding insulation faults such as leakage and breakdown under high voltage. The conductive component 3 is tightly electrically connected to the first conductor 11, the second conductor 13, and the third conductor 15, reducing contact resistance during current transmission, reducing energy loss, avoiding aging of insulation materials due to heat at the contact point, and ensuring the stability of the output voltage of the electron beam generator.

[0048] 2. The fastening components are fixed by multiple parts working together, the disc springs compensate for errors and prevent loosening, the conical structure enables quick positioning and assembly, and the baffles reduce wear and extend service life;

[0049] 3. The sealing components effectively isolate air and impurities, preventing air breakdown and short circuits under high pressure, and adapting to sealing needs in multiple scenarios.

[0050] As a further preferred embodiment, the conductive component 3 includes a high-voltage ring 31, a clamping cone sleeve 32, a grid bias ring 33, a grid bias clamping ring 34, a filament ring 35, a filament clamping ring 36, and a contact spring 37 disposed on the tapered connection structure 2. The end of the first conductor 11 is disposed inside the high-voltage ring 31 and fixed by the clamping cone sleeve 32. The end of the second conductor 13 is disposed outside the grid bias clamping ring 34 and fixed by the grid bias ring 33. The end of the third conductor 15 is disposed inside the filament clamping ring 36 and fixed by the filament ring 35. Three sets of contact springs 37 are disposed, and the three sets of contact springs 37 are respectively sleeved on the annular grooves of the high-voltage ring 31, the grid bias ring 33, and the filament ring 35.

[0051] Specifically, the high-voltage ring 31 and the clamping cone sleeve 32 are used to achieve electrical connection and fixation between the first conductor 11 and the tapered connection structure 2. The first conductor 11 is a solid bare copper wire used for high-voltage output, with its end extending to the inside of the high-voltage ring 31. The clamping cone sleeve 32 is set with the small end facing inwards in a tapered direction. After being pressed into the inner hole of the high-voltage ring 31, the bare copper wire of the first conductor 11 is tightly clamped in the inner hole of the clamping cone sleeve 32 by the squeezing deformation of the outer cone surface, forming a stable high-voltage output connection structure and ensuring low resistance characteristics during high-voltage current transmission.

[0052] The grid bias ring 33 and the grid bias clamping ring 34 work together to fix and conduct the second conductor 13. The second conductor 13 is a copper wire braided shielded conductor used for grid bias output. Its ends are evenly distributed on the outside of the grid bias clamping ring 34. The grid bias ring 33 is sleeved on the outer surface of the copper wire braided shielded conductor. By cooperating with the grid bias clamping ring 34, the copper wire is tightly clamped, so that the grid bias signal can be transmitted stably. At the same time, the shielding characteristics of the copper wire braid are used to reduce signal interference.

[0053] The filament ring 35 and the filament clamping ring 36 are used to fix the third conductor 15. The third conductor 15 is a copper wire braided shielded conductor used for filament output. Its end is set inside the filament clamping ring 36. The filament ring 35 is sleeved on the outer surface of the copper wire braided shielded conductor. Together with the filament clamping ring 36, they clamp and fix the copper wire to meet the high current transmission requirements of filament power supply and ensure the stable operation of the electron beam generator filament.

[0054] The contact spring 37 is made of beryllium bronze and has been silver-plated on the surface. It has good conductivity and elasticity. There are three sets of contact springs 37, which are respectively fitted into the annular grooves of the high voltage ring 31, the grid bias ring 33 and the filament ring 35. When the connector is used with the socket of the electron beam generator or high voltage power supply, it can provide stable contact pressure, ensure reliable electrical connection of each output channel, reduce contact resistance and energy loss, and enhance the shock resistance of the connection structure to adapt to the vibration environment during equipment operation.

[0055] In addition, the high voltage ring 31, the clamping cone sleeve 32, the grid offset ring 33, the grid offset clamping ring 34, the filament ring 35, and the filament clamping ring 36 are all made of H62 brass and are gold-plated to improve conductivity, enhance corrosion resistance and wear resistance, extend the service life of the conductive component 3, and ensure the stability of the connector in a long-term high-voltage working environment.

[0056] As a further preferred embodiment, the high-voltage coaxial cable 1 further includes a semiconductor wrapping tape 17, a thermoplastic outer half-layer 18, a copper tape shielding layer 19, and a PVC sheath outer protective layer 20. The semiconductor wrapping tape 17 is a single wrapping of polyimide film, and the thermoplastic outer half-layer 18 is made of a mixture of cross-linked polyethylene, EPDM rubber, and conductive carbon black.

[0057] Specifically, the semiconductor wrapping tape 17 is a single wrapping form of polyimide film, which is respectively set between the first high-voltage PE insulation layer 12 and the second conductor 13, and between the second high-voltage PE insulation layer 14 and the third conductor 15, etc., at key insulation interfaces. The polyimide film has excellent flexibility, which can tightly wrap the inner structure without damaging other materials. At the same time, it has outstanding high temperature resistance, which can resist the local temperature rise generated during 150kV high-voltage transmission, and has good resistance to chemicals such as acids and alkalis, effectively ensuring the interface stability between the insulation layers and reducing the risk of partial discharge.

[0058] The extruded thermoplastic outer half-layer 18 is a two-layer structure with thicknesses of 1 mm and 2 mm, made of cross-linked polyethylene, EPDM rubber, and conductive carbon black, wrapped around the outside of the third high-voltage PE insulation layer 16. By adjusting the composition ratio, this composite material retains the insulation strength of cross-linked polyethylene, improves structural adaptability with the elasticity of EPDM rubber, and optimizes the interfacial electric field distribution with conductive carbon black, avoiding insulation aging caused by electric field concentration, and further enhancing the overall high-voltage resistance of the cable.

[0059] The copper tape shielding layer 19 has a double-layer structure of 2×40×0.15mm, covering the outside of the extruded thermoplastic outer half layer 18. As a grounding shielding layer, it can carry capacitive current during normal cable operation and can serve as a channel for short-circuit current when a short circuit occurs in the system. Together with the braided shielding structure of the second conductor 13 and the third conductor 15, it forms a multi-shielding system, which significantly improves the electromagnetic compatibility of the cable and reduces internal and external electromagnetic interference.

[0060] The outer protective layer of the PVC sheath is 2.5mm thick, with an outer diameter controlled at 54±0.7mm. It is made of PVC material with excellent mechanical and electrical properties, which can effectively protect the internal structure from mechanical damage and chemical corrosion, while enhancing the cable's tensile, compressive and abrasion resistance, adapting to the laying and use needs of various scenarios such as electron beam welding and medical irradiation.

[0061] Through the collaborative design of the above multi-layer structure, the insulation reliability, shielding effectiveness and mechanical strength of the high-voltage coaxial cable 1 are comprehensively improved.

[0062] As a further preferred embodiment, the second conductor 13 is a 16-spindle 6 / 0.15mm copper wire braided shielded conductor, and the third conductor is a 24-spindle 8 / 0.15mm copper wire braided shielded conductor.

[0063] Specifically, the second conductor 13 is a 16-spindle braided shielded conductor made of 6 / 0.15mm copper wire, consisting of 16 spindles, each containing 6 copper wires with a diameter of 0.15mm. The shielding layer is formed by tightly braiding the conductor twice. This structure not only possesses excellent conductivity, enabling stable transmission of the grid bias signal, but its braided shielding design also effectively blocks external electromagnetic interference from affecting the grid bias signal, while preventing internal signal leakage and ensuring the stability of the grid bias output, thus meeting the accuracy requirements of the electron beam generator for the grid bias signal.

[0064] The third conductor 15 is a 24-spindle braided shielded conductor made of 8 / 0.15mm copper wire, consisting of 24 spindles, each containing 8 copper wires with a diameter of 0.15mm, and also formed by two tight braids. This structure can meet the high current transmission requirements of the filament output. The braided shielding layer works synergistically with the shielding structure of the second conductor 13 to further enhance the overall electromagnetic shielding effectiveness of the high-voltage coaxial cable and reduce signal interference during the operation of the electron beam generator.

[0065] In addition, the braiding density and diameter parameters of the two conductors are matched and designed to ensure both the shielding effect and the conductors have a certain degree of flexibility, which facilitates the bending, laying and installation of cables and adapts to the layout requirements of different application scenarios.

[0066] As a further preferred embodiment, a ceramic ring 38 is provided between the high-voltage ring 31 and the grid bias ring 33, and a ceramic ring 39 is provided between the grid bias ring 33 and the filament ring 35.

[0067] Specifically, the ceramic ring 38 is tightly assembled between the high-voltage ring 31 and the grid bias ring 33. Through its excellent insulation performance, it achieves electrical isolation between the first conductor 11 (high-voltage output) and the second conductor 13 (grid bias output), avoiding leakage or signal interference between output channels of different voltage levels, and ensuring the independence of high-voltage transmission and grid bias signal transmission.

[0068] The ceramic ring 39 is positioned between the grid bias ring 33 and the filament ring 35, and also serves as a reliable insulation barrier, electrically separating the second conductor 13 (grid bias output) from the third conductor 15 (filament output), preventing mutual interference between the grid bias signal and the filament power supply signal, and ensuring the signal purity and stability of each output channel.

[0069] As a further preferred embodiment, the tapered connection structure 2 includes, from right to left, a conductive component mounting section 21, a sealing section 22, and a fastening section 23. The conductive component 3 is disposed on the conductive component mounting section 21, the sealing component 5 is sleeved on the sealing section 22, and the fastening sealing component 4 is disposed on the fastening section 23.

[0070] Specifically, the conductive component mounting section 21 is the front end of the tapered connection structure 2. Its surface is provided with mounting slots for components such as the high voltage ring 31, the grid bias ring 33, and the filament ring 35. The conductive component 3 is precisely positioned and installed in this section, so that the high voltage ring 31 and the first conductor 11, the grid bias ring 33 and the second conductor 13, and the filament ring 35 and the third conductor 15 form corresponding electrical connections, ensuring the assembly accuracy and contact reliability of each conductive component.

[0071] The sealing section 22 is located between the conductive component mounting section 21 and the fastening section 23. Its outer surface is provided with an annular groove. The sealing component 5 (conical silicone rubber sleeve) is tightly fitted in the groove of this section. After assembly, the rubber sleeve and the sealing section 22 form an interference fit. When the connector is connected to the equipment interface, the sealing component 5 is compressed and fills the gap, realizing the airtight seal under high pressure environment and effectively preventing air and impurities from entering the conductive area.

[0072] The fastening section 23 is the rear end part of the tapered connection structure 2. Its outer side is provided with a stepped structure that is compatible with the connector end cap 41 and the cable positioning wedge 44. The various components of the fastening assembly 4 (connector end cap 41, connector sleeve 42, hexagonal nut 43, etc.) are fixedly connected to the high-voltage coaxial cable 1 through this section. The disc spring 46 provides a continuous pre-tightening force between the fastening section 23 and the connector end cap 41 to ensure the overall firmness of the tapered connection structure 2 and the cable.

[0073] Through a three-section structural design, the tapered connection structure 2 achieves the partitioned integration of conductive, sealing, and fastening functions, which not only ensures the assembly independence of each component, but also improves the compactness and synergy of the overall structure through axial connection.

[0074] In this embodiment, the sealing cone surface is machined with a precision of 13°±0.1 and a length of 98mm. The assembly slots of the high-voltage ring 31, grid offset ring 33, and filament ring 35 are adapted to the dimensions of each conductor. Specifically, the first conductor 11 has a diameter of 3±0.05mm, the second conductor 13 (16 spindles 6 / 0.15mm) has an outer diameter of 6.5±0.2mm, and the third conductor 15 (24 spindles 8 / 0.15mm) has an outer diameter of 13.5±0.3mm. The first ceramic ring 38 corresponds to the outer diameter of the second high-voltage PE insulation layer of 12±0.3mm, and the second ceramic ring 39 corresponds to the outer dimension of the third conductor of 13.5±0.3mm. The sealing assembly 5 (rubber...) The sealing sleeve has dimensions of ϕ32.24mm (inner diameter), ϕ46.60mm (outer diameter), a height of 65mm, a taper of 13°, and four R1 rounded corner transitions, which fit tightly with the outer surface of the sealing section; the fastening section 23 has a 7°±0.1 conical groove with a diameter of ϕ45mm, which is adapted to the conical size of the cable positioning wedge 44; the disc spring 46 is a series 0-80, and the baffle 45 is installed between the connector end cover 41 and the sleeve; the hexagonal nut 43 has an internal thread of M76×3, which is adapted to the external thread of the socket, and the outer diameter of the connector sleeve is designed to match the ϕ49.5±0.7mm positioning sleeve of the cable positioning wedge.

[0075] As a further preferred embodiment, a positioning sleeve 6 is provided between the fastening component 4 and the sealing component 5.

[0076] Specifically, the positioning sleeve 6 plays a role in quick insertion and precise positioning during the mating of the high-voltage coaxial cable tapered connector with the socket of the electron beam generator and high-voltage power supply. When the high-voltage coaxial tapered connector is inserted into the socket, the 13° outer conical surface of the positioning sleeve 6 contacts and presses against the 13° inner conical surface of the socket, which can fix the position and prevent the connector from being over-inserted, thereby protecting the insulation material and triaxial conductor from damage. At the same time, the setting of the positioning sleeve 6 does not affect the sealing performance of the sealing component 5 and is compatible with the structure of the fastening component 4. When the hexagonal nut 43 is tightened to compress and deform the three sets of back-to-back butterfly springs, it can work together to ensure that the coaxial tapered connector is always in a compressed state, further improving the stability and reliability of the overall connection.

[0077] As a further preferred embodiment, an intelligent monitoring device is also included. The intelligent monitoring device includes an ultra-high frequency sensor, a partial discharge collector, a monitoring host, and a PLC control system. The ultra-high frequency sensor is fixed to the end, intermediate joint, or grounding wire of the cable body. The partial discharge collector is connected to the ultra-high frequency sensor and is used to amplify, filter, and digitize the collected signal. The monitoring host is connected to the partial discharge collector and is used to analyze and judge the processed signal. The PLC control system is connected to the monitoring host and is used to control the electron beam welding equipment to stop when an abnormality is detected.

[0078] Specifically, the components of the intelligent monitoring device work together to achieve real-time monitoring of the operating status of the tapered connector of the high-voltage coaxial cable: the ultra-high frequency sensor is fixed to the end, intermediate joint, or grounding wire of the high-voltage coaxial cable body, forming good signal coupling through close contact with the cable surface, sensing partial discharge signals in real time and completing effective coupling of the partial discharge signals; the partial discharge acquisition device is connected to the ultra-high frequency sensor, amplifying, filtering, and digitizing the acquired analog signals to improve signal quality and provide reliable analysis data; after receiving the processed signals, the monitoring host analyzes and extracts partial discharge characteristic parameters such as discharge amplitude and discharge frequency to determine whether the discharge phenomenon exists and to determine its location, degree, and development trend; the PLC control system is linked with the monitoring host. When the monitoring host detects an abnormality in the connector, it immediately receives an early warning signal and controls the electron beam welding equipment to stop according to the program, facilitating rapid maintenance and repair by maintenance personnel, thereby avoiding equipment damage and power outage accidents, and reducing the scrap of welded products caused by sudden shutdown.

[0079] This intelligent monitoring device can effectively monitor the status of the connector during operation, promptly detect potential insulation faults, and ensure the safe and reliable operation of the high-voltage coaxial cable tapered connector and the entire electron beam generator system.

[0080] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-voltage coaxial cable tapered connector for an electron beam generator, characterized in that, include: High-voltage coaxial cable, tapered connection structures disposed at both ends of the high-voltage coaxial cable, conductive components for realizing electrical connection, fastening components for fastening connection, and sealing components; The high-voltage coaxial cable comprises, from the inside out, a first conductor, a first high-voltage PE insulation layer, a second conductor, a second high-voltage PE insulation layer, a third conductor, and a third high-voltage PE insulation layer. The first conductor is used for high-voltage output, the second conductor is used for grid deflection output, and the third conductor is used for filament output. The conductive component is disposed on the tapered connection structure and is electrically connected to the first conductor, the second conductor and the third conductor; The fastening assembly includes a connector end cap, connector sleeve, hexagonal nut, cable positioning wedge, baffle, and disc spring, all fitted onto the outside of the high-voltage coaxial cable. The sealing assembly is disposed on the tapered connection structure.

2. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, The conductive component includes a high-voltage ring, a clamping cone sleeve, a grid biasing ring, a grid biasing clamping ring, a filament ring, a filament clamping ring, and a contact spring disposed on the tapered connection structure. The end of the first conductor is disposed inside the high-voltage ring and fixed by the clamping cone sleeve. The end of the second conductor is disposed outside the grid biasing clamping ring and fixed by the grid biasing ring. The end of the third conductor is disposed inside the filament clamping ring and fixed by the filament ring. Three sets of contact springs are disposed, and the three sets of contact springs are respectively sleeved on the annular grooves of the high-voltage ring, the grid biasing ring, and the filament ring.

3. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, The high-voltage coaxial cable also includes a semiconductor wrapping tape, a thermoplastic outer half-layer, a copper tape shielding layer, and a PVC sheath outer protective layer. The semiconductor wrapping tape is made of a single polyimide film, and the thermoplastic outer half-layer is made of a mixture of cross-linked polyethylene, EPDM rubber, and conductive carbon black.

4. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, The second conductor is a 16-spindle 6 / 0.15mm copper wire braided shielded conductor, and the third conductor is a 24-spindle 8 / 0.15mm copper wire braided shielded conductor.

5. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 2, characterized in that, A ceramic ring one is provided between the high-voltage ring and the grid deflection ring, and a ceramic ring two is provided between the grid deflection ring and the filament ring.

6. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, The tapered connection structure includes, from right to left, a conductive component mounting section, a sealing section, and a fastening section. The conductive component is mounted on the conductive component mounting section, the sealing component is sleeved on the sealing section, and the fastening component is mounted on the fastening section.

7. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, A positioning sleeve is provided between the fastening component and the sealing component.

8. A high-voltage coaxial cable tapered connector for an electron beam generator according to claim 1, characterized in that, It also includes an intelligent monitoring device, which comprises an ultra-high frequency sensor, a partial discharge collector, a monitoring host, and a PLC control system. The ultra-high frequency sensor is fixed to the end, intermediate joint, or grounding wire of the cable body. The partial discharge collector is connected to the ultra-high frequency sensor and is used to amplify, filter, and digitize the collected signal. The monitoring host is connected to the partial discharge collector and is used to analyze and judge the processed signal. The PLC control system is connected to the monitoring host and is used to control the electron beam welding equipment to stop when an abnormality is detected.

Images