CN114914792B - Disk electrode high-voltage high-current switch and system - Google Patents
Disk electrode high-voltage high-current switch and system Download PDFInfo
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- CN114914792B CN114914792B CN202210349098.6A CN202210349098A CN114914792B CN 114914792 B CN114914792 B CN 114914792B CN 202210349098 A CN202210349098 A CN 202210349098A CN 114914792 B CN114914792 B CN 114914792B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T14/00—Spark gaps not provided for in groups H01T2/00 - H01T13/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/24—Selection of materials for electrodes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/202—Air circulating in closed loop within enclosure wherein heat is removed through heat-exchangers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Abstract
The invention discloses a high-voltage and high-current switch and a system for a disk electrode, wherein the switch comprises: the switch cylinder body, the upper electrode, the lower electrode and the middle electrode; the upper electrode and the lower electrode are disc electrodes and are respectively arranged at two corresponding ends of the switch cylinder; the middle electrode is a rotary electrode and is arranged in the switch cylinder; the upper electrode and the lower electrode are spaced from the middle electrode by the same preset distance to form two discharge gaps; in operation, the discharge gap is filled with an insulating gas. When the switch works, insulating gas is filled in the discharge gap, high-speed airflow heat dissipation and cleaning of the discharge gap are assisted, fixed-point discharge is improved by adopting the rotating electrode, and stable and reliable work under the conditions of high voltage, high current, narrow pulse width and high repetition frequency can be realized.
Description
Technical Field
The invention belongs to the technical field of pulse power, and particularly relates to a high-voltage and high-current switch and a system for a disk electrode, which are key devices for forming high-voltage, high-current, quick-discharging and high-repetition-frequency electric pulses.
Background
At present, with the development of laser technology, microwave technology, material preparation technology and material processing technology, the requirements on high-voltage and high-current pulse power sources are increasingly greater, and the general application of the high-power pulse power sources promotes the development of the technology in the related technical field. For example, in the field of materials, cathode arc technology, microwave source technology, direct current sputtering technology, plasma technology and the like, which are important technical methods for material research, are independent of the support of pulse power technology. The development of pulse power technology proceeds toward high voltage, high current, narrow pulse width, high repetition frequency, in which the switching technology plays a critical role, so to speak, the level of the switching technology determines the level of the pulse power technology.
For four technical indexes of high voltage, high current, narrow pulse width and high repetition frequency, any one of the four technical indexes is high, the technical difficulties are not met, for example, the technical difficulties of voltage to 100kV or current to several kA or pulse width to several ns or repetition frequency to several tens of kHz are overcome, but the practical requirements of the pulse power technology development are that one switching system needs to realize the four indexes at the same time, and the technical difficulties faced by the switching technology are as follows: realizing the insulation problem under high voltage operation and high voltage; electrode ablation, heat dissipation, insulation recovery and the like under the conduction of large current; realize ns-level discharge structure and reduce the transmission loss problem; insulation degradation problems caused by contamination of the switch chamber insulation wall with sputtered material, and the like.
Only from the electrode material, the adverse effect caused by the instant high temperature of the surface during heavy current discharge can not be solved, only the electrode part is taken as the leading part, and from the technical details of all parts of the switch, a comprehensive treatment system for coping with high-heat electric arcs is formed, so that the switch performance can be effectively improved.
Therefore, how to provide a high-voltage high-current switch with a disk electrode to realize stable and reliable operation under the conditions of high voltage, high current, narrow pulse width and high repetition frequency becomes a problem to be solved urgently by practitioners in the same row.
Disclosure of Invention
The invention aims to provide a high-voltage high-current switch with a disk electrode and a system thereof, which at least partially solve the technical problems, and can realize stable and reliable operation under the conditions of high voltage, high current, narrow pulse width and high repetition frequency.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a disk electrode high voltage high current switch comprising: the switch cylinder body, the upper electrode, the lower electrode and the middle electrode;
the upper electrode and the lower electrode are disc electrodes and are respectively arranged at two corresponding ends of the switch cylinder; the middle electrode is a rotary electrode and is arranged in the switch cylinder;
the upper electrode and the lower electrode are spaced from the middle electrode by the same preset distance to form two discharge gaps; in operation, the discharge gap is filled with an insulating gas.
Further, the upper electrode and the lower electrode have the same structure and are made of high-temperature resistant metal materials;
the other end of the disc electrode is an extension electrode which extends to the outside of the switch cylinder; the extension electrode is of a sandwich structure and is internally communicated with cooling water.
Further, the sandwich structure of the extension electrode is provided with a water cooling port for water inlet and water discharge.
Further, the rotating shaft of the middle electrode is perpendicular to the axes of the upper electrode and the lower electrode;
the middle electrode is in a sphere structure or a cylinder structure and is made of high-temperature resistant metal; and the intermediate electrode is applied with a high-voltage trigger pulse to control the conduction of the switch.
Further, the profiles of the upper electrode and the lower electrode corresponding to the middle electrode are the same;
when the middle electrode is in a sphere structure, the profile of the upper electrode and the lower electrode is in a concave sphere curved surface structure; when the middle electrode is of a cylindrical structure, the profile of the upper electrode and the profile of the lower electrode are of a chord curved surface structure.
Further, the switch cylinder body is of a cylindrical structure and is made of insulating materials; the outer surface has a groove ring that increases the creepage distance.
Further, a plurality of air flow ports are arranged on the cylinder wall of the switch cylinder body corresponding to the two discharge gaps and used for injecting and discharging insulating gas.
Further, the insulating gas includes one or more of the following:
dry air, nitrogen, carbon dioxide and sulphur hexafluoride.
Further, the high temperature resistant metal material is any one of the following materials: nickel-based alloys, cerium tungsten and red copper.
Further, the insulating material adopted by the switch cylinder is a glass fiber cloth cylinder, and the inner wall of the switch cylinder is stuck by a ceramic plate.
Further, the upper electrode and the lower electrode are adhered to the corresponding two ends of the switch cylinder body through epoxy resin.
In a second aspect, an embodiment of the present invention further provides a high-voltage and high-current switching system with a disc electrode, which includes a high-voltage and high-current switching device with a disc electrode according to any one of the embodiments above; the system also comprises a cooling system and a gas closed circulation system;
wherein the cooling system comprises: a heat exchanger and a cooling device; the gas closed circulation system comprises: a fan, a pressure control device and a filter;
the heat exchanger of the cooling system is connected in series in a downstream loop of the filter of the gas closed circulating system, and transmits heat to the cooling device to cool high-temperature gas generated by switch discharge;
the fan is used for switching the circulation of the working medium; the filter is used for capturing and depositing electrode sputtering matters and gas ionization products in strong plasmas in the discharge gap;
the pressure control device is used for maintaining the gas pressure of the switch gap and keeping the stability of the switch operation.
Compared with the prior art, the invention has the following beneficial effects:
a disk electrode high voltage high current switch comprising: the switch cylinder body, the upper electrode, the lower electrode and the middle electrode; the upper electrode and the lower electrode are disc electrodes and are respectively arranged at two corresponding ends of the switch cylinder; the middle electrode is a rotary electrode and is arranged in the switch cylinder; the upper electrode and the lower electrode are spaced from the middle electrode by the same preset distance to form two discharge gaps; in operation, the discharge gap is filled with an insulating gas. When the switch works, insulating gas is filled in the discharge gap, high-speed airflow heat dissipation and cleaning of the discharge gap are assisted, fixed-point discharge is improved by adopting the rotating electrode, and stable and reliable work under the conditions of high voltage, high current, narrow pulse width and high repetition frequency can be realized.
Further, the upper electrode and the lower electrode adopt a disk type high-temperature resistant electrode structure, and the extended electrodes are used for forced water cooling heat dissipation, auxiliary gap high-speed air flow heat dissipation and cleaning; the intermediate electrode adopts the technical measures of improving fixed-point discharge, reducing transmission inductance of a coaxial structure and the like to weaken or share the negative influence of a large-current arc, and realizes stable and reliable work under the conditions of high voltage, large current, narrow pulse width and high repetition frequency.
Drawings
FIG. 1 is a cross-sectional view of a disk electrode high voltage high current switch provided by an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of a high-voltage high-current switch with a disk electrode according to an embodiment of the present invention;
FIG. 3 is a block diagram of a system for providing a high voltage and high current switching of a disk electrode according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a laser circuit employing a disk electrode high voltage high current switch according to an embodiment of the present invention.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1-2, the present invention provides a high voltage high current switch with a disk electrode, comprising: an upper electrode 1, a middle electrode 2, a lower electrode 3 and a switch cylinder 4; wherein, the upper electrode 1 and the lower electrode 3 are disk electrodes which can be bonded by epoxy resin glue and are respectively arranged at two corresponding ends of the switch cylinder 4; the middle electrode 2 is a rotary electrode and is arranged in the switch cylinder 4; the middle electrode 2 can be driven to rotate by a motor outside the switch cylinder 4, and the motor is connected with the middle electrode 2 through a magnetic coupler. The upper electrode, the lower electrode and the middle electrode are spaced by the same preset distance to form two discharge gaps; during operation, the discharge gap is filled with insulating gas, and the high-speed air flow can strengthen internal heat dissipation and cleaning; and the rotary electrode is adopted to improve the condition of fixed-point discharge, so that stable and reliable work under the conditions of high voltage, high current, narrow pulse width and high repetition frequency can be realized. The insulating gas may be one or a mixture of dry air, nitrogen, carbon dioxide and sulfur hexafluoride.
The upper electrode structure and the lower electrode structure are identical, the upper electrode structure and the lower electrode structure are both disc electrodes, the part close to the middle electrode is a disc structure, and the other end of the upper electrode structure and the lower electrode structure are extension electrodes extending to the outside of the switch cylinder; the extension electrode is of a sandwich structure, and cooling water is filled in the extension electrode. The upper electrode and the lower electrode are made of high-temperature-resistant metal electrode materials, such as nickel-based alloy, cerium tungsten, red copper and the like; the extension electrode is made of high-temperature-resistant metal electrode materials, and performs forced heat dissipation on the disk electrode while conducting electric pulses, and the outer ends of the upper electrode and the lower electrode are used for being connected with an application system. The disk electrode can be integrally formed, or can be formed by combining and installing a disk structure and an extension electrode, and the two parts can be tightly connected through screws.
As shown in fig. 1, a water cooling port 5 is provided on the copper bar of the extended electrode sandwich structure, one for water injection and the other for water drainage. In this embodiment, other cooling liquids such as cooling oil may be used.
The middle electrode is a rotary electrode, and the rotary shaft of the middle electrode is perpendicular to the axes of the upper electrode and the lower electrode. The middle electrode can be in a sphere structure or a cylindrical structure, and is also processed by adopting a high-temperature resistant electrode material, and the middle electrode is applied with a high-voltage trigger pulse to control the conduction of the switch. The electrode profile of the corresponding surfaces of the middle electrode and the upper and lower electrodes is consistent with the surface profile of the upper and lower electrodes, and the equal interval is kept. If the middle electrode is a sphere, the molded surface of the disk electrode is a concave spherical curved surface structure; if the middle electrode is a cylinder, the disk electrode is a chord curved surface.
As shown in fig. 2, the switch cylinder is of a cylindrical structure and is made of insulating materials; the external surface is provided with a groove-shaped ring for increasing the creepage distance, and the inner wall is made of ceramic materials, so that the ablation resistance can be improved.
The insulating cylinder wall of the switch cylinder body is provided with four air inlet and outlet holes 6 corresponding to two gaps of the three electrodes, and the high-speed air flow is introduced to blow away the discharge gas during operation so as to ensure reliable insulation and repeated discharge, and meanwhile, the switch cylinder body also has the function of cooling the discharge chamber, the gas in the switch can cause pressure change due to discharge heating, and the pressure in the switch chamber can be balanced through the constant-pressure control system, so that the breakdown voltage is not too large in dispersivity.
Example 2:
referring to fig. 3, the invention also provides a high-voltage high-current switching system with a disk electrode, which mainly comprises a switch and a gas circulation part. The switch structure part is a main body, is a disk electrode high-voltage high-current switch of the embodiment 1, and mainly comprises three parts, namely an upper electrode, a lower electrode, a rotating middle electrode and a switch insulating cylinder. The gas circulation part is composed of a cooling system and a gas closed circulation system.
Wherein, the cooling system includes: a heat exchanger and a cooling device; the gas closed circulation system comprises: a fan, a pressure control device and a filter; the cooling device consists of a cooling unit, a refrigerant circulating device and a temperature control device.
The heat exchanger of the cooling system is connected in series in a downstream loop of the filter of the gas closed circulating system, and transmits heat to the cooling device to cool high-temperature gas generated by switch discharge, so that the switch can work stably.
The fan of the gas closed circulation system is used for switching the circulation of the working medium, and the circulation of the closed system is realized in a vacuum or pressure state, so that the fan system meeting the working condition is required; the filter is used for capturing and depositing electrode sputtering matters and gas ionization products in strong plasmas in the discharge gap so as to ensure the normal and stable operation of the switch; the pressure control device is used for maintaining the gas pressure of the switch gap and keeping the stability of the switch operation.
Because the switch gap forms discharge plasma when the high-energy pulse is conducted, the insulating state of the discharge gap must be quickly restored before the next discharge, so that the discharge medium of the switch gap needs to be quickly updated, which is the effect of a gas-sealed circulation system, the gas-sealed circulation system needs to realize the gas circulation of the sealed system in a vacuum or pressure state, the gas-sealed circulation system is used for providing stable high-speed gas flow, a filter in the gas-sealed circulation system is used for capturing and depositing electrode sputtering matters and gas ionization products in strong plasma in the discharge gap, and the discharge products can influence the normal and stable operation of the switch; the control of the pressure keeps stable discharge on one hand, and can correspondingly adjust along with the change of the working voltage of the switch, so as to provide a certain margin, thereby improving the stability of the switch.
And because the discharge medium is in closed circulation, the plasma generated by the switch discharge gap becomes a heating source of the closed system, and the stability, reliability and repeatability of the discharge medium between the switch gaps can be ensured only by the rapid cooling of the cooling system, so that the working stability of a gas circulation part is ensured.
When the switch is in operation, the gas circulation part blows the discharge gas to the switch cylinder body of the switch by high-speed gas flow, and meanwhile, the switch also has the function of cooling the discharge chamber, and the gas in the switch can cause pressure change due to discharge heating, so that the pressure in the switch chamber is balanced through the pressure control device, and the breakdown voltage is not too large in dispersity.
The structure, function and use of the switch will be explained in detail below by means of a general technical parameter of the high-voltage high-current switch with the disc electrode.
1. Switch size: disk electrode diameter: 60mm, thickness: 10mm, material: cerium tungsten; diameter of red copper column: 50mm, length: 100mm; an intermediate electrode diameter; a 60mm sphere, which is made of cerium tungsten; diameter of insulating cylinder: 200mm, wall thickness: 25mm, material: a glass fiber cloth cylinder; electrode spacing: 4mm.
2. And (3) switch assembly: the upper electrode and the lower electrode are arranged on two end surfaces of the glass fiber tube and are bonded by using epoxy resin glue; the middle electrode is driven to rotate by a motor outside the switch cylinder, and the motor is connected with the middle electrode through a magnetic coupler; the inner wall of the switch is adhered to the inner surface by a ceramic plate.
3. Auxiliary system: cooling by using a 5kW water cooling unit; 7.5kW of airtight compressor is taken as gas circulation power; inflation pressure: 0.2MPa; filling gas: nitrogen gas.
4. Trigger parameters: voltage: 50kV; pulse width: 10us; frequency: 500Hz; power: 4kW.
The high-voltage high-current switch with the disk electrode designed according to the parameters can be used on an excimer laser with 50kV,500Hz and pulse width of tens of ns, and the conduction power reaches 100KW. Fig. 4 is a schematic diagram of a laser circuit employing a disk electrode high-voltage high-current switch, where the circuit is a typical C-C fast discharge excitation circuit, in the figure, C0 is a main energy storage capacitor, L is a charging inductance, C1 is a peaking capacitor connected in parallel to two sides of a laser cavity of the laser, and when the disk electrode high-voltage high-current switch is turned on under the control of a trigger pulse, the energy storage capacitor C0 charges the peaking capacitor C1 first, and then the C1 discharges to the laser cavity to excite laser gas in the laser cavity to generate laser. By adopting the circuit, an XeCI excimer laser is used, the working pressure is 0.2Mpa, and more than 1kW of excimer laser output can be realized under the condition that the capacity of an energy storage capacitor is 0.1uF,50kV and 500 Hz.
The disk electrode high-voltage high-current switch provided by the embodiment of the invention is a high-power switch device applied to high-voltage and high-current occasions, and is designed mainly aiming at the high-voltage, high-current and quick discharge requirements of a high-power pulse gas laser. The technical characteristics are that: the switch is of a three-electrode structure; the upper electrode and the lower electrode are high-temperature-resistant metal electrodes, and the electrodes are large-size disc-type surfaces; the intermediate electrode is of a rotary structure; high-speed airflow is led between two discharge gaps formed by the three electrodes, and the air is circulated in a closed mode. The large-size electrode can effectively reduce current density or improve injection energy, and the cooling system and the gas closed circulation system are also beneficial to improving the stability of the switch. The technical index of the high-voltage and high-current switch of the disk electrode can be as follows: the working voltage is 50KV, the conduction power is 100kW, the working frequency is 500Hz, and the discharge pulse width is tens of nanoseconds.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A disc electrode high voltage high current switch comprising: the switch cylinder body, the upper electrode, the lower electrode and the middle electrode;
the switch cylinder body is of a cylindrical structure and is made of insulating materials; the outer surface is provided with a groove-shaped ring for increasing the creepage distance;
the upper electrode and the lower electrode are disc electrodes and are respectively arranged at two corresponding ends of the switch cylinder; the other end of the disc electrode is an extension electrode which extends to the outside of the switch cylinder; the extension electrode is of a sandwich structure, and cooling water is filled in the extension electrode; the sandwich structure of the extension electrode is provided with a water cooling port for water inlet and water discharge;
the middle electrode is a rotary electrode and is arranged in the switch cylinder;
the profiles of the upper electrode and the lower electrode corresponding to the middle electrode are the same; when the middle electrode is in a sphere structure, the profile of the upper electrode and the lower electrode is in a concave sphere curved surface structure; when the middle electrode is of a cylindrical structure, the profile of the upper electrode and the lower electrode is of a chord curved surface structure;
the upper electrode and the lower electrode are spaced from the middle electrode by the same preset distance to form two discharge gaps; in operation, the discharge gap is filled with an insulating gas.
2. A disk electrode high voltage high current switch as defined in claim 1, wherein: the rotating shaft of the middle electrode is vertical to the axle centers of the upper electrode and the lower electrode;
the middle electrode is in a sphere structure or a cylinder structure and is made of high-temperature resistant metal; and the intermediate electrode is applied with a high-voltage trigger pulse to control the conduction of the switch.
3. A disk electrode high voltage high current switch as defined in claim 1, wherein: and a plurality of air flow ports are arranged on the cylinder wall of the switch cylinder body corresponding to the two discharge gaps and are used for injecting and discharging insulating gas.
4. A disk electrode high voltage high current switching system characterized by: a high voltage high current switch comprising a disc electrode according to any one of claims 1-3; the system also comprises a cooling system and a gas closed circulation system;
wherein the cooling system comprises: a heat exchanger and a cooling device; the gas closed circulation system comprises: a fan, a pressure control device and a filter;
the heat exchanger of the cooling system is connected in series in a downstream loop of the filter of the gas closed circulating system, and transmits heat to the cooling device to cool high-temperature gas generated by switch discharge;
the fan is used for switching the circulation of the working medium; the filter is used for capturing and depositing electrode sputtering matters and gas ionization products in strong plasmas in the discharge gap;
the pressure control device is used for maintaining the gas pressure of the switch gap and keeping the stability of the switch operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349098.6A CN114914792B (en) | 2022-04-01 | 2022-04-01 | Disk electrode high-voltage high-current switch and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349098.6A CN114914792B (en) | 2022-04-01 | 2022-04-01 | Disk electrode high-voltage high-current switch and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114914792A CN114914792A (en) | 2022-08-16 |
| CN114914792B true CN114914792B (en) | 2023-08-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088359A (en) * | 1993-03-27 | 1994-06-22 | 牡丹江市光电技术研究所 | Controllable ratory switch |
| CN2196829Y (en) * | 1994-08-24 | 1995-05-10 | 牡丹江市光电技术研究所 | Multi-way rotary switch |
| CN105197895A (en) * | 2015-09-25 | 2015-12-30 | 南京金仁环保科技有限公司 | Disc ozone generator using quartz glass as dielectric |
| CN109997416A (en) * | 2016-11-30 | 2019-07-09 | 韩国水力原子力株式会社 | Multi-electrode plasma torch |
-
2022
- 2022-04-01 CN CN202210349098.6A patent/CN114914792B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088359A (en) * | 1993-03-27 | 1994-06-22 | 牡丹江市光电技术研究所 | Controllable ratory switch |
| CN2196829Y (en) * | 1994-08-24 | 1995-05-10 | 牡丹江市光电技术研究所 | Multi-way rotary switch |
| CN105197895A (en) * | 2015-09-25 | 2015-12-30 | 南京金仁环保科技有限公司 | Disc ozone generator using quartz glass as dielectric |
| CN109997416A (en) * | 2016-11-30 | 2019-07-09 | 韩国水力原子力株式会社 | Multi-electrode plasma torch |
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| Publication number | Publication date |
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| CN114914792A (en) | 2022-08-16 |
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