CN118137241A - Device for solving the problem of electrode sparking in coaxial cable adapter in low-pressure plasma environment - Google Patents
Device for solving the problem of electrode sparking in coaxial cable adapter in low-pressure plasma environment Download PDFInfo
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- CN118137241A CN118137241A CN202410253990.3A CN202410253990A CN118137241A CN 118137241 A CN118137241 A CN 118137241A CN 202410253990 A CN202410253990 A CN 202410253990A CN 118137241 A CN118137241 A CN 118137241A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/527—Flameproof cases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
Abstract
The invention discloses a device for solving the problem of high-voltage ignition and insulation protection capability improvement of an adapter for transmitting a coaxial cable to a cabin-penetrating discrete electrode column in a low-pressure plasma environment in a vacuum cabin, relating to the field of coaxial cable adapters. The coaxial cable is clamped by the electrode blocks in the two electrode insulation boxes; the electrode insulation boxes are arranged at two ends of the middle insulation block, and the coaxial cable passes through the middle insulation block; the upper ends of the electrode insulation box and the middle insulation block are embedded into the insulation cover box, and one end of the coaxial cable extends out of the insulation cover box; the middle insulating block and the insulating cover box are fixed on the inner wall of the vacuum tank body through insulating fixing structures; the wall penetrating electrode penetrates through the inner wall of the vacuum tank body and is connected with the electrode block. The invention enables the adapter to meet the use requirements under the conditions of low air pressure, plasma, electromagnetic waves and high voltage.
Description
Technical Field
The invention relates to the technical field of coaxial cable adapters, in particular to a device for solving the problem of electrode sparking of a coaxial cable adapter in a low-pressure plasma environment.
Background
The high-voltage high-current pulse coil is one of important components of the magnetically confined plasma device. Plasma experiments typically produce a plasma by gas ionization under high vacuum conditions. In the vacuum chamber, the pulse coil generates a strong magnetic field or ionizes working gas to generate plasma under the excitation of a pulse power supply. The plasma is confined by the strong magnetic field and moves away from the coil as the magnetic field increases, and moves toward the coil as the magnetic field decreases. To achieve high magnetic field peaks, pulsed excitation current peaks are typically required to reach the order of tens of kiloamperes or even up to hundreds of kiloamperes. In a high-current pulse power system, coaxial cables are generally adopted to realize current transmission from a coil load to a pulse power supply. The coaxial cable can effectively avoid electromagnetic force among large-current single-core cables and can realize effective electromagnetic shielding. The coaxial cable used for current transmission in the vacuum cabin is formed by realizing the transmission of current in and out by the coaxial inner core cable and the coaxial outer core cable. The positive electrode and the negative electrode of the pulse power source positioned outside the vacuum cabin are connected with a load circuit in the vacuum cabin through a cabin penetrating mechanism. In order to meet the cabin penetrating requirement of a high-current pulse circuit, cabin penetrating electrodes meeting the air tightness requirement are usually arranged on flanges of a vacuum cabin, electrode columns used for current transmission are arranged on the cabin penetrating electrodes, meanwhile, the electrode column spacing meets the insulation requirement of high-voltage discharge, and the electrode column spacing is usually required to be tens of centimeters to tens of centimeters. The electrode column is connected with the positive electrode and the negative electrode of the pulse power supply outside the vacuum cabin and is connected with a coaxial cable for current transmission in the vacuum cabin. Therefore, it is necessary to realize connection of positive and negative electrode columns having a certain pitch with an inner core cable and an outer core cable of the coaxial cable, respectively, in the vacuum chamber through the coaxial cable adapter. Coaxial cable adapters operate in low pressure plasma environments, particularly in experimental devices operating with microwave plasma sources, low pressure, plasma, electromagnetic wave and high voltage conditions present significant challenges to the high voltage ignition protection and insulation performance of the adapter. Therefore, a method capable of solving the problem of high voltage ignition from the coaxial cable to the discrete electrode column in the low-pressure plasma environment in the vacuum cabin is found, the low-pressure high-voltage insulating capability of the adapter is improved, and the safe switching between the high-voltage coaxial cable and the cabin-penetrating discrete electrode column in the low-pressure plasma environment in the vacuum cabin is a problem which needs to be solved at present.
Disclosure of Invention
The invention aims to solve the problems of high-voltage ignition and improvement of insulation protection capability of an adapter for transmitting a high-voltage and high-current coaxial cable to a cabin-penetrating discrete electrode column in a low-pressure plasma environment in a vacuum cabin, and particularly provides a device for solving the problem of electrode ignition of the coaxial cable adapter in the low-pressure plasma environment. The invention effectively improves the insulation protection capability of the adapter, so that the adapter can meet the use requirements under the conditions of low air pressure, plasma, electromagnetic wave and high voltage.
The invention provides a device for solving the problem of electrode sparking of a coaxial cable adapter in a low-pressure plasma environment, which specifically comprises two electrode insulation boxes, an intermediate insulation block, an insulation cover box, a coaxial cable and an insulation fixing structure, wherein a plurality of electrode blocks are arranged in the electrode insulation boxes; the coaxial cable is clamped by the electrode blocks; the two electrode insulation boxes are respectively arranged at the left end and the right end of the middle insulation block, and the coaxial cable passes through the middle insulation block; the upper ends of the two electrode insulation boxes and the middle insulation block are embedded into the lower end of the insulation cover box, and one end of the coaxial cable extends out of the insulation cover box; the middle insulating block and the insulating cover box are fixedly arranged on the inner wall of the vacuum tank body through insulating fixing structures; the two wall penetrating electrodes penetrate through the inner wall of the vacuum tank body and the insulation fixing structure and are respectively connected with the electrode blocks in one electrode insulation box.
Furthermore, an inner core joint and an outer core joint are sleeved on the coaxial cable, and the electrode block clamps the coaxial cable through the inner core joint and the outer core joint.
Further, the electrode insulation box comprises a main body and two baffles, wherein the main body comprises an insulation sleeve and a U-shaped shell, and a through hole is formed in the side wall of the U-shaped shell and is communicated with the insulation sleeve; the front end and the rear end of the U-shaped shell are provided with baffle plates to form a rectangular box body with one side open, and a plurality of electrode blocks are arranged in the rectangular box body; the wall penetrating electrode passes through the insulating sleeve and is connected with the electrode block.
Furthermore, two insulating support blocks are arranged between the coaxial cable and the insulating fixing structure at positions corresponding to the middle of the inner core joint and the outer core joint.
Furthermore, insulating glue is filled between the coaxial cable and the insulating fixing structure at the position corresponding to the middle of the two insulating support blocks.
Further, the insulation fixing structure comprises a plurality of metal bases with bolts, a plurality of insulation columns and an insulation base, and the inner wall of the vacuum tank body, the metal bases with bolts, the insulation columns and the insulation base are sequentially connected; the middle insulating block is arranged on the insulating base.
Further, the upper surface of the insulating base is provided with a sinking groove, and the middle insulating block is arranged in the sinking groove.
Further, a plurality of strip-shaped sinking grooves are formed in the upper surface of the middle insulating block, a plurality of strip-shaped protrusions are arranged in the rectangular groove of the insulating cover box, and the strip-shaped protrusions are matched with the strip-shaped sinking grooves.
Furthermore, the device for solving the problem of the electrode sparking of the coaxial cable adapter in the low-pressure plasma environment further comprises a metal protection box, wherein the metal protection box is covered outside the electrode insulation box, the middle insulation block, the insulation cover box and the insulation fixing structure and is connected with the inner wall of the vacuum tank body, and one end of the coaxial cable penetrates out from one side of the metal protection box.
Further, the upper surfaces of the insulating cover box and the metal protection box are provided with a plurality of through holes.
The device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment has the beneficial effects that:
(1) According to the device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment, the electrodes (comprising the wall penetrating electrode, the electrode block, the inner core joint and the outer core joint) are separated by the arranged middle insulating block and the electrode insulating box, so that the creepage distance between the electrodes in the two electrode insulating boxes is increased, and the insulating capability is improved;
(2) According to the device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment, the insulation fixing structure is arranged to support the whole device, so that the capability of resisting the electromagnetic force between electrodes is improved, and the insulation capability of the coaxial cable and the inner wall of the vacuum tank body is improved;
(3) According to the device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment, the through holes arranged on the insulating cover box and the metal protection box ensure that the internal and external air pressures of the device are consistent, so that the gas in the metal protection box cannot be effectively pumped by a vacuum system, and the risk of the ignition of the electrode arranged in the metal protection box caused by the increase of the high air pressure in the metal protection box is avoided; meanwhile, the insulating cover box realizes the integral fastening of the device, can resist the strong electromagnetic force between the electrodes, and has the advantage of improving the operation capability under the condition of high current; the metal protection box realizes the integral shielding of the device and has the advantage of improving the operation capability in the strong electromagnetic wave and plasma environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
In the drawings:
FIG. 1 is a schematic perspective view of a device for solving the problem of sparking of coaxial cable adapter electrodes in a low pressure plasma environment according to the present invention;
FIG. 2 is an exploded view of an apparatus for addressing the sparking of coaxial cable adapter electrodes in a low pressure plasma environment, in accordance with the present invention;
FIG. 3 is a perspective view of an electrode insulation cartridge of a device for addressing electrode sparking of a coaxial cable adapter in a low pressure plasma environment in accordance with the present invention;
FIG. 4 is an exploded view of an electrode insulation cartridge of an apparatus for addressing electrode sparking of a coaxial cable adapter in a low pressure plasma environment, in accordance with the present invention;
Fig. 5 is a schematic perspective view of an insulating cover box of a device for solving the problem of sparking of coaxial cable adapter electrodes in a low-pressure plasma environment according to the present invention;
FIG. 6 is a schematic perspective view of an intermediate insulating block of a device for addressing the sparking of coaxial cable adapter electrodes in a low pressure plasma environment in accordance with the present invention;
wherein: 1-electrode block I, 2-electrode block II, 3-electrode block III, 4-electrode block IV, 5-electrode block V, 6-electrode block VI, 7-coaxial cable, 8-inner core joint, 9-outer core joint, 10-wall penetrating electrode I, 11-wall penetrating electrode II, 12-electrode insulating box I, 13-electrode insulating box II, 14-main body, 15-baffle, 16-bolted metal base, 17-insulating column, 18-insulating base, 19-intermediate insulating block, 20-insulating support block, 21-insulating cover box and 22-metal protection box.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings:
the first embodiment is as follows: the present embodiment is specifically described with reference to fig. 1 to 6. The device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment in the embodiment specifically comprises two electrode insulation boxes, an intermediate insulation block 19, an insulation cover box 21, a coaxial cable 7, an inner core joint 8, an outer core joint 9 and an insulation fixing structure, wherein the inner core joint 8 and the outer core joint 9 are sleeved on the coaxial cable 7, and the outer core joint 9 is arranged at the tail end of the coaxial cable 7 as shown in fig. 2; a plurality of electrode blocks are arranged in the electrode insulation box; the two electrode insulation boxes respectively clamp the inner core joint 8 and the outer core joint 9 through a plurality of electrode blocks in the two electrode insulation boxes; the two electrode insulation boxes are respectively arranged at the left end and the right end of the middle insulation block 19, and the coaxial cable 7 passes through an arch-shaped through groove arranged on the middle insulation block 19; the lower end of the insulating cover box 21 is provided with a rectangular groove, the upper ends of the two electrode insulating boxes and the middle insulating block 19 are embedded into the rectangular groove, and one end of the coaxial cable 7 extends out of the insulating cover box 21; the middle insulating block 19 and the insulating cover box 21 are fixedly arranged on the inner wall of the vacuum tank body through insulating fixing structures; the two wall penetrating electrodes penetrate through the inner wall of the vacuum tank body and the insulation fixing structure and are respectively connected with the electrode blocks in one electrode insulation box.
The electrode insulation box comprises a main body 14 and two baffles 15, wherein the main body 14 comprises an insulation sleeve and a U-shaped shell, and a through hole is formed in the side wall of the U-shaped shell and is communicated with the insulation sleeve; baffle plates 15 are arranged at the front end and the rear end of the U-shaped shell to form a rectangular box body with one side open, and a plurality of electrode blocks are arranged in the rectangular box body; the wall penetrating electrode passes through the insulating sleeve and is connected with the electrode block. In the embodiment, the first electrode block 1, the second electrode block 2 and the third electrode block 3 are arranged on the first electrode insulation box 12, the first electrode block 1 and the second electrode block 2 are clamped and fixed by using bolts after the inner core joint 8 is clamped, and the bolt holes are lower counter bores. The electrode block 2 and the electrode block 3 are fixed by bolts after being clamped by the wall penetrating electrode I10, and the bolt holes are lower counter bores. The electrode block IV 4, the electrode block V5 and the electrode block VI 6 are arranged on the electrode insulation box II 13, wherein the electrode block 4 and the electrode block 5 are fixed by using bolts after clamping the outer core joint 9 on the coaxial cable 7, and the bolt holes are lower counter bores. The electrode block 5 and the electrode block 6 are fixed by bolts after being clamped by the wall penetrating electrode II 11, and the bolt holes are lower counter bores. During installation, the wall penetrating electrode penetrates through the insulating sleeve of the main body 14, the wall penetrating electrode and the coaxial cable 7 are clamped by the electrode blocks installed in the U-shaped shell, and finally the baffle 15 is attached to the front end and the rear end of the U-shaped shell through insulating glue. The first electrode block 1, the second electrode block 2, the fifth electrode block 5, the sixth electrode block 6 and the bottom plate of the U-shaped shell are provided with through holes, bolts penetrate through the through holes to fix the electrode insulation box on the middle insulation block 19, and the bottom plate of the U-shaped shell is in contact with the middle insulation block 19.
Two insulating support blocks 20 are arranged between the coaxial cable 7 and the insulating fixing structure at positions corresponding to the middle of the inner core joint 8 and the outer core joint 9, and play a role in supporting the coaxial cable 7. The position between the coaxial cable 7 and the insulation fixing structure, which corresponds to the middle of the two insulation supporting blocks 20, is filled with insulation glue, so that the risk of creeping discharge between the inner electrode blocks of the two electrode insulation boxes and the inner core joint 8 and the outer core joint 9 is reduced.
The insulation fixing structure comprises a plurality of metal bases 16 with bolts, a plurality of insulation columns 17 and an insulation base 18, wherein one end of the metal base 16 with bolts is connected with the inner wall of the vacuum tank body in a welding mode, and the other end of the metal base 16 with bolts is connected with the insulation columns 17 in a threaded mode; the insulation base 18 is provided with a plurality of sinking through holes, and bolts penetrate through the sinking through holes on the insulation base 18 and are in threaded connection with the upper ends of the insulation columns 17, so that the insulation base 18 is fastened on the insulation columns 17, the whole insulation of the adapter and the vacuum tank body is ensured while the supporting and fixing strength of the support columns is ensured, and the ignition risk is reduced; an intermediate insulating block 19 is provided on the insulating base 18.
The upper surface of the insulating base 18 is provided with a sinking groove, and the middle insulating block 19 is arranged in the sinking groove so as to limit the middle insulating block 19. The lower surface of the insulating base 18 is provided with a sinking groove corresponding to the insulating column 17, and the upper end of the insulating column 17 is embedded into the sinking groove of the lower surface of the insulating base 18 for limiting, so that the fixing strength is ensured.
The upper surface of the middle insulating block 19 is provided with three strip-shaped sinking grooves, three strip-shaped protrusions are arranged in the rectangular groove of the insulating cover box 21, the strip-shaped protrusions are matched with the strip-shaped sinking grooves, the creepage distance between the inner electrode blocks of the two electrode insulating boxes and the inner core connector 8 and the outer core connector 9 is increased, and the insulating strength is improved. The upper surface of the middle insulating block 19 is also provided with two sinking grooves between the three strip-shaped sinking grooves, the side surfaces of the left and right ends of the middle insulating block 19 in the grooves are provided with sinking through holes in the horizontal direction, and the electrode blocks in the electrode insulating box are connected with bolts through the sinking through holes. The upper surface of the middle insulating block 19 is provided with 4 vertical through holes in the groove and outside the groove respectively, and is fixed with the insulating base 18 at the lower layer by using bolts. The overall height of the intermediate insulating block 19 is slightly higher than that of the electrode insulating cover, so that the risk of high-voltage creeping discharge between the electrode blocks in the two electrode insulating covers and between the inner core joint 8 and the outer core joint 9 is reduced.
The insulating cover box 21 is designed according to the outer structure of the electrode insulating box 12, the electrode block 1, the electrode block 2, the electrode block 3, the electrode block 4, the electrode block 5, the electrode block 6 and the middle insulating block 19 in a matched mode, so that the electrode insulating box 12, the electrode block 1, the electrode block 2, the electrode block 3, the electrode block 4, the electrode block 5, the electrode block 6 and the middle insulating block 19 are combined and then placed in the insulating cover box 21, a rectangular groove with two ribs is formed in the middle of the insulating cover box 21, and the middle structure of the rectangular groove is matched with the middle insulating block 19. The two sides of the rectangular groove are respectively provided with an inward-sinking cuboid, and the inward-sinking cuboid structure is matched with the electrode insulation box. The outgoing line side of the coaxial cable 7 of the insulating cover box 21 is provided with an arc-shaped arch hole for outgoing lines of the coaxial cable 7. The upper surface of the insulating cover box 21 is provided with a plurality of through holes, so that the internal gas is prevented from being effectively pumped by a vacuum system, and the risk of ignition between electrodes due to the increase of internal high pressure is avoided.
The device for solving the problem of the electrode sparking of the coaxial cable adapter in the low-pressure plasma environment further comprises a metal protection box 22, wherein the metal protection box 22 is covered outside the electrode insulation box, the middle insulation block 19, the insulation cover box 21 and the insulation fixing structure and is subjected to multi-point welding and fixing with the inner wall of the vacuum tank body, one side of the metal protection box 22 is provided with a circular arc hole, and one end of the coaxial cable 7 penetrates out of the circular arc hole; the metal shield 22 serves to protect the entire adapter from the plasma environment and to enhance its operational capabilities in a low pressure plasma environment. Meanwhile, the electromagnetic radiation shielding device is in direct contact with the vacuum cabin to keep good grounding, can shield electromagnetic waves outside the adapter, simultaneously shield electromagnetic radiation generated by a single-core part and an electrode column inside the adapter, improves the running capability of the adapter in an electromagnetic wave environment, simultaneously improves the electromagnetic compatibility of the adapter, and enlarges the applicable range of the adapter.
The upper surface or any one side of the metal protection box 22 is provided with a through hole, so that the internal air pressure of the metal protection box 22 is consistent with the air pressure in the vacuum tank outside the metal protection box 22, the internal air of the metal protection box 22 can not be effectively pumped by a vacuum system, and the risk of ignition of electrodes arranged in the metal protection box 22 due to the increase of the high air pressure inside the metal protection box 22 is avoided.
In summary, in the device for solving the problem of sparking of the coaxial cable adapter electrode in the low-pressure plasma environment, the electrodes (including the wall-penetrating electrode, the electrode block, the inner core joint 8 and the outer core joint 9) are separated by the arranged middle insulating block 19 and the electrode insulating box, so that the creepage distance between the electrodes in the two electrode insulating boxes is increased, and the insulating capability is improved; according to the device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment, the insulation fixing structure is arranged to support the whole device, so that the capability of resisting the electromagnetic force between electrodes is improved, and the insulation capability of the coaxial cable and the inner wall of the vacuum tank body is improved; according to the device for solving the problem of the ignition of the coaxial cable adapter electrode in the low-pressure plasma environment, the internal and external air pressures of the device are kept consistent through the through holes arranged on the insulating cover box 21 and the metal protection box 22, so that the gas in the metal protection box 22 cannot be effectively pumped by a vacuum system, and the risk of the ignition of the electrode arranged in the metal protection box due to the increase of the high air pressure in the metal protection box 22 is avoided; meanwhile, the insulating cover box 21 realizes the integral fastening of the device, can resist the strong electromagnetic force between the electrodes, and has the advantage of improving the operation capability under the condition of high current; the metal shield case 22 achieves the overall shielding of the device, with the advantage of improving the ability to operate in strong electromagnetic and plasma environments.
The above specific embodiments are used for further detailed description of the objects, technical solutions and advantageous effects of the present invention. It should be understood that the foregoing description is only a specific example of the present invention, and is not intended to limit the invention, but rather is a reasonable combination of features described in the foregoing embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a solve device that coaxial cable adapter electrode of low atmospheric pressure plasma environment was struck sparked which characterized in that: the coaxial cable comprises two electrode insulation boxes, an intermediate insulation block (19), an insulation cover box (21), a coaxial cable (7) and an insulation fixing structure, wherein a plurality of electrode blocks are arranged in the electrode insulation boxes; the coaxial cable (7) is clamped by the electrode blocks; the two electrode insulation boxes are respectively arranged at the left end and the right end of the middle insulation block (19), and the coaxial cable (7) passes through the middle insulation block (19); the upper ends of the two electrode insulation boxes and the middle insulation block (19) are embedded into the lower end of the insulation cover box (21), and one end of the coaxial cable (7) extends out of the insulation cover box (21); the middle insulating block (19) and the insulating cover box (21) are fixedly arranged on the inner wall of the vacuum tank body through insulating fixing structures; the two wall penetrating electrodes penetrate through the inner wall of the vacuum tank body and the insulation fixing structure and are respectively connected with the electrode blocks in one electrode insulation box.
2. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 1, wherein: the coaxial cable (7) is sleeved with an inner core joint (8) and an outer core joint (9), and the electrode block clamps the coaxial cable (7) through the inner core joint (8) and the outer core joint (9).
3. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 1, wherein: the electrode insulation box comprises a main body (14) and two baffles (15), wherein the main body (14) comprises an insulation sleeve and a U-shaped shell, and a through hole is formed in the side wall of the U-shaped shell and is communicated with the insulation sleeve; the front end and the rear end of the U-shaped shell are provided with baffle plates (15) to form a rectangular box body with one side open, and a plurality of electrode blocks are arranged in the rectangular box body; the wall penetrating electrode passes through the insulating sleeve and is connected with the electrode block.
4. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 2, wherein: two insulating support blocks (20) are arranged between the coaxial cable (7) and the insulating fixing structure and correspond to the middle positions of the inner core joint (8) and the outer core joint (9).
5. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 4, wherein: and insulating glue is filled between the coaxial cable (7) and the insulating fixing structure at a position corresponding to the middle of the two insulating support blocks (20).
6. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 1, wherein: the insulation fixing structure comprises a plurality of metal bases (16) with bolts, a plurality of insulation columns (17) and an insulation base (18), wherein the inner wall of the vacuum tank body, the metal bases (16) with bolts, the insulation columns (17) and the insulation base (18) are sequentially connected; the middle insulating block (19) is arranged on the insulating base (18).
7. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 6, wherein: the upper surface of the insulating base (18) is provided with a sinking groove, and the middle insulating block (19) is arranged in the sinking groove.
8. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 1, wherein: the upper surface of the middle insulating block (19) is provided with a plurality of strip-shaped sinking grooves, a plurality of strip-shaped protrusions are arranged in the rectangular grooves of the insulating cover box (21), and the strip-shaped protrusions are matched with the strip-shaped sinking grooves.
9. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 1, wherein: the device for solving the problem of the electrode sparking of the coaxial cable adapter in the low-pressure plasma environment further comprises a metal protection box (22), wherein the metal protection box (22) is covered outside the electrode insulation box, the middle insulation block (19), the insulation cover box (21) and the insulation fixing structure and is connected with the inner wall of the vacuum tank body, and one end of the coaxial cable (7) penetrates out from one side of the metal protection box (22).
10. The apparatus for addressing the spark of a coaxial cable adapter electrode in a low pressure plasma environment of claim 8, wherein: the upper surface of the insulating cover box (21) and the surface of the metal protection box (22) are provided with a plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410253990.3A CN118137241B (en) | 2024-03-06 | 2024-03-06 | Device for solving the problem of electrode sparking in coaxial cable adapter in low-pressure plasma environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410253990.3A CN118137241B (en) | 2024-03-06 | 2024-03-06 | Device for solving the problem of electrode sparking in coaxial cable adapter in low-pressure plasma environment |
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Cited By (1)
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| CN118890761A (en) * | 2024-08-13 | 2024-11-01 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | A high voltage insulating vacuum feedthrough device sealed by flowing liquid |
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| CN118890761A (en) * | 2024-08-13 | 2024-11-01 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | A high voltage insulating vacuum feedthrough device sealed by flowing liquid |
| CN118890761B (en) * | 2024-08-13 | 2025-09-23 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | A high-voltage insulating vacuum feedthrough device sealed by flowing liquid |
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| CN118137241B (en) | 2025-03-25 |
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