CN110047635B - Solid-state flexible resistor for gas-insulated pulsed power source - Google Patents
Solid-state flexible resistor for gas-insulated pulsed power source Download PDFInfo
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- CN110047635B CN110047635B CN201910367642.8A CN201910367642A CN110047635B CN 110047635 B CN110047635 B CN 110047635B CN 201910367642 A CN201910367642 A CN 201910367642A CN 110047635 B CN110047635 B CN 110047635B
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- 235000018290 Musa x paradisiaca Nutrition 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000006258 conductive agent Substances 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
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- 240000005561 Musa balbisiana Species 0.000 claims 1
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- 238000004804 winding Methods 0.000 description 7
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- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
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- 238000004806 packaging method and process Methods 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/22—Elongated resistive element being bent or curved, e.g. sinusoidal, helical
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Elimination Of Static Electricity (AREA)
- Organic Insulating Materials (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention relates to a solid-state flexible resistor for an air-insulated pulse power source, which solves the problems of unstable resistance value, high failure frequency, poor reliability and incapability of realizing maintenance-free of the existing electric isolation resistor. The solid flexible resistor for the gas-insulated pulse power source comprises a conductive rubber strip, a flexible insulating tube, a shielding electrode, a connecting terminal and a plug; the outer surface of the flexible insulating pipe is provided with a spiral wire groove, and the pipe walls at two ends are provided with through holes; the conductive rubber strip is wound in the spiral wire groove on the surface of the flexible insulating pipe, two ends of the conductive rubber strip respectively penetrate through the through hole to extend into the cavity of the flexible insulating pipe, and the conductive rubber strip extending into the cavity of the flexible insulating pipe is electrically connected with the plug through the connecting terminal; the shielding electrode is arranged on the outer side of the connecting terminal and used for insulating the electric connection position.
Description
Technical Field
The invention relates to the field of pulse power driving sources, in particular to a solid flexible resistor for an air-insulated pulse power source.
Background
Common pulse power drive sources, such as Marx generators and linear transformer drive sources, each include a large number of resistive elements. For example, as an isolation resistor for charging a plurality of parallel branch pulse capacitors or pulse capacitor banks, a current limiting resistor for triggering a gas switch, a high-voltage arm resistor of a resistor divider, a drive source dummy load energy absorption resistor, etc., these resistors often need to bear thousands to hundreds of kilovolts of pulse high voltage and large peak power, and due to the limitation of size and space, common film resistors and wire winding resistors in the market are difficult to meet the requirements.
Based on the above requirements, the liquid resistor is widely applied at present by filling an electrolyte solution into an insulating tube, and two ends of the insulating tube are manufactured by electrode packaging. The liquid resistance is conductive by electrolyte ions dissolved in liquid, and the electrolyte ions are NaCl and NH4Cl、CuSO2Etc., the liquid may be an aqueous solution or other solvent. The liquid resistor adjusts the resistance value of the resistor by adjusting the liquid resistivity and the internal size of the insulating framework of the packaging solution, and has the advantages of simple structure, low manufacturing cost and the like. Meanwhile, the specific heat capacity of the liquid is relatively large, and the liquid resistor has the characteristics of high withstand voltage, capability of bearing high-voltage large-current pulses, small inductance, high power capacity and the like. However, the liquid resistor has many disadvantages in practical application. First, the resistance of the electrolyte solution resistor is unstable, and its resistivity is susceptible to temperature changes, particularly the lower the resistivity, the greater the relative change in resistance. After long-term operation, the encapsulated electrode and the electrolyte solution act to cause the resistance solution to deteriorate and generate suspended matters, and the suspended matters can also influence the resistivity of the solution; secondly, the electrolyte solution resistor is easy to generate bubbles during operation, so that the electrodes at two ends of the resistor generate surface discharge along the bubbles, or the electrode at one end of the resistor is separated from the contact with the solution to fail, and once the resistor solution leaks, the solution is mixed into transformer oil or SF serving as an external insulation medium6In the gas, the insulation property of the insulating medium is seriously degraded, and the insulation safety of the driving source is threatened.
FLTD has important application prospect in the fields of Z pinch, flash photography and the like as a novel pulse power source technology, and is a research hotspot of domestic and foreign pulse power. In the recent 20 years, the national laboratory of san diese america (SNL) has made a lot of research on the charging isolation resistance of an oil-insulated linear transformer drive source (FLTD), and the charging isolation resistance between parallel branches successively adopts an electrolyte liquid resistance, a solid body resistance, a metal film resistance, a winding resistance, and the like. The electrolyte liquid resistor is easy to generate bubbles, leak and the like, and needs to be replaced regularly; solid resistors (body resistors, membrane resistors and winding resistors) are easy to crack, the frequency of fault occurrence is high, and the working reliability of FLTD is seriously influenced. In order to solve the problems that the charging isolation resistor has high failure frequency and can not realize maintenance-free, in 2018, through research, the U.S. SNL provides a manufacturing method of a flexible high-voltage resistor, see the patent of 'solid-state resistor for pulsed power machines (US9514864B 2)', wherein the resistor is formed by connecting a plurality of high-voltage winding resistors in series, is packaged in a polyethylene pipe filled with transformer oil, and electrodes are packaged at two ends of the resistor. The transformer oil is subjected to multiple times of depth filtration to ensure that bubbles and impurities are removed from the oil in the polyethylene pipe, the insulation strength is high, the resistor can replace a traditional electrolyte solution resistor, the resistance value is stable, no fault and performance reduction occur after 5000 times of discharging, and the maintenance-free charging isolation resistor is basically realized. However, the resistor is complex in manufacturing process, the plurality of resistors are easy to have sharp ends when being welded in series, the installation is inconvenient, the insulation reliability of the resistor is influenced by oil in the polyethylene pipe, and the resistor is not suitable for the gas insulation pulse power source.
Disclosure of Invention
The invention aims to solve the problems of unstable resistance value, high failure frequency, poor reliability and incapability of realizing maintenance-free of the existing electric isolation resistor, and provides a solid flexible resistor for an air-insulated pulse power source, which is characterized in that a conductive rubber strip with certain resistivity is wound on a flexible insulating tube to form a spiral shape to form a resistor and an inductor which are connected in series and used as an isolation element between capacitors connected in parallel, only the resistor plays a role during charging, the resistance value can be properly reduced, and the energy loss on the resistor and the difference of capacitor charging voltages between different branches are reduced; when the multiple branches are discharged, the inductance resistors are connected in series to increase the impedance between the capacitors, so that the isolation effect of the capacitors among the branches is better realized.
The technical solution of the invention is as follows:
a solid-state flexible resistor for a gas-insulated pulse power source comprises a conductive rubber strip, a flexible insulating tube, a shielding electrode, a connecting terminal and a plug; the outer surface of the flexible insulating pipe is provided with a spiral wire groove, and the pipe walls at two ends are provided with through holes; the conductive rubber strip is wound in the spiral wire groove on the surface of the flexible insulating pipe, two ends of the conductive rubber strip respectively penetrate through the through hole to extend into the cavity of the flexible insulating pipe, and the conductive rubber strip extending into the cavity of the flexible insulating pipe is electrically connected with the plug through the connecting terminal; the shielding electrode is arranged on the outer side of the connecting terminal and used for insulating the electric connection position.
Furthermore, the connecting terminal is a brass pipe, one end of the brass pipe is sleeved on the conductive rubber strip and is tightly pressed by a wire pressing pliers, and the other end of the brass pipe is inserted into the inner hole of the plug and is fixed by a screw.
Furthermore, the shielding electrode is provided with a step hole along the axis direction, the flexible insulating tube is inserted into the large hole of the step hole, and the plug is inserted into the small hole of the step hole and fixed through a jackscrew.
Further, the flexible insulating pipe is made of polyvinyl chloride or polyurethane.
Further, the plug is a banana plug.
Further, the cross section of the conductive rubber strip is circular or square.
Further, the cross-sectional dimension of the spiral wire groove is the same as the diameter of the conductive rubber strip.
Further, the conductive rubber strip takes carbon black, graphite, carbon nano tubes, metal powder or metal fibers as a conductive agent.
Further, the shielding electrode is a sleeve with a polished outer surface and smooth transition.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the solid-state flexible resistor, the conductive rubber strip is wound on the flexible insulating tube to form the spiral inductor, the resistor and the inductor are connected in series to serve as an isolation element between the capacitors connected in parallel, only the resistor plays a role in charging, the resistance value can be properly reduced, the resistance value is stable, and the energy loss on the resistor and the difference between the charging voltages of the capacitors of different branches are reduced; when the multiple branches are discharged, the inductance resistors are connected in series to increase the impedance between the capacitors, so that the isolation effect of the capacitors among the branches is better realized.
2. The resistor body is made of all-solid-state flexible material, has high reliability, no maintenance and low manufacturing cost, and can be used in a pulse power driving source of gas insulation.
3. The resistor is compact in structure and convenient to assemble, and the plug-in type interface of the banana plug is convenient to connect with other elements.
Drawings
FIG. 1 is a schematic diagram of a solid state flexible resistor structure for a gas insulated pulsed power source according to the present invention;
fig. 2 is a cross-sectional view of the solid state flexible resistor of the present invention for use in a gas insulated pulsed power source.
Reference numerals: 1-conductive rubber strip, 2-flexible insulating tube, 3-shielding electrode, 4-connecting terminal and 5-plug.
Detailed Description
The invention provides an all-solid-state flexible resistor capable of resisting pulse high-voltage impact in a pulse power system, which is generally used in a high-voltage pulse driving source taking gas as an insulating medium and is used as an isolation resistor for charging capacitors among a plurality of parallel branches. The resistor is a full-solid-state flexible high-voltage resistor with a compact structure, and is characterized in that a conductive rubber strip with certain resistivity is wound on a flexible insulating tube to form a spiral shape, so that the resistor and an inductor are connected in series and are used as an isolating element between capacitors connected in parallel, only the resistor plays a role during charging, the resistance value can be properly reduced, and the energy loss on the resistor and the difference between the charging voltages of capacitors of different branches are reduced; when the multiple branches are discharged, the inductance resistors are connected in series to increase the impedance between the capacitors, so that the isolation effect of the capacitors among the branches is better realized.
As shown in fig. 1 and 2, a solid-state flexible resistor for a gas-insulated pulse power source comprises a conductive rubber strip 1, a flexible insulating tube 2, a shielding electrode 3, a connecting terminal 4 and a plug 5; the outer surface of the flexible insulating pipe 2 is provided with a spiral wire groove, and the pipe walls at two ends are provided with through holes; the conductive rubber strip 1 is wound in a spiral wire groove on the surface of the flexible insulating tube 2, two ends of the conductive rubber strip respectively penetrate through the through hole and extend into the cavity of the flexible insulating tube 2, and the conductive rubber strip 1 extending into the cavity of the flexible insulating tube 2 is electrically connected with the plug 5 through the connecting terminal 4; the shielding electrode 3 is arranged on the outer side of the connecting terminal 4 and used for insulating an electric connection part, specifically, the shielding electrode 3 is provided with a step hole along the axis direction, the flexible insulating tube 2 is inserted into a large hole of the step hole, and the plug 5 is inserted into a small hole of the step hole and fixed through a jackscrew.
Connecting terminal 4 specifically can adopt the brass pipe, and the one end suit of brass pipe is on conductive rubber strip 1, and compresses tightly through the line ball pincers, and the other end of brass pipe inserts 5 downtheholes of plug to through the fix with screw, plug 5 specifically can adopt the banana plug, and the plug-in interface that adopts the banana plug is connected conveniently with other components.
The invention adopts conductive rubber as a resistance material, and the conductive principle is that uniformly distributed conductive agents are added into the rubber material to form a chain-shaped or net-shaped conductive path in the rubber. According to the requirements of different resistivities, the conductive agent is carbon materials such as carbon black, graphite, carbon nano tubes and the like or metal materials such as metal powder, metal fibers and the like, the volume resistivity of the conductive rubber can be adjusted within the range of 500-20k omega/m, and the section of the conductive rubber can be round or square.
The flexible insulating tube 2 is made of soft polyvinyl chloride or polyurethane and other insulating tubes to realize the flexible bending of the winding spiral resistor. The flexible insulating tube 2 is provided with spiral wire grooves which are uniformly distributed, the cross section size of each spiral wire groove is basically the same as the diameter of the conductive rubber strip 1 and used for winding the conductive rubber strip 1, and the distance and the number of turns of the spiral wire grooves are determined by the required resistance value and the borne pulse voltage. The end part of a spiral wire groove of the flexible insulating pipe 2 is provided with a through hole, a conductive rubber strip 1 is wound on the flexible insulating pipe 2 along the wire groove, and the through holes penetrating through two ends of the wire groove are extended out from a central hole of the flexible insulating pipe 2, so that the conductive rubber strip 1 forms a spiral inductor, the inductance value of the spiral inductor is determined by the diameter of the spiral wire, the turn pitch and the number of turns, and the resistance is determined by the resistivity of a rubber rope body, the diameter and the total length of a rubber rope for winding the spiral inductor.
Connecting terminal 4 and the reliable electrical connection in 1 both ends of conductive rubber strip, and connecting terminal 4 corona discharge when shielding electrode 3 is used for preventing high voltage charging, banana plug 5 is convenient for reliably firmly peg graft with other electrodes. The connecting terminals 4 are brass tubes with the inner diameter slightly larger than the diameter of the conductive rubber strip 1, the brass tubes are sleeved at two ends of the conductive rubber strip 1 and are compressed by a wire pressing clamp to realize good electrical contact, and the connecting terminals 4 are respectively inserted into holes of the banana plug 5 and fixed by screws. The shielding electrode 3 is made of metal materials, stepped holes are formed in the axis direction and used for fixing the resistor main body, the large holes are used for inserting the flexible insulating tubes 2, threaded holes are formed in the side faces of the small holes, the banana plugs 5 are fixed through jackscrews, and the jackscrews sink into the holes to ensure that the outer surfaces of the electrodes are smooth.
Fig. 1 shows an all-solid-state flexible resistor for 200kV gas insulated linear transformer drive source (FLTD) parallel branch charging isolation. The resistor adopts conductive rubber which takes carbon black as a conductive agent as a resistor material. The diameter of the conductive rubber strip is 3mm, and the volume resistance is 20k ohm per meter. The flexible insulating tube is a polyurethane tube, the inner diameter is 11mm, the outer diameter is 16mm, and the length is 173 mm. A spiral groove with the diameter of 3mm, the thread pitch of 6mm and the circumference diameter of 16mm is carved on the flexible insulating pipe, and the number of spiral turns is 22. The conductive rubber strips are uniformly wound in the spiral grooves and are led out from two ends of the flexible insulating pipe. The shielding electrode is made of aluminum alloy material and has an outer diameter of 22 mm. In order to prevent corona from being generated when the high-voltage direct current is endured, the outer surface of the shielding electrode is polished and smoothly transited, two ends of the flexible insulating tube are respectively inserted into the shielding electrodes, and the assembled high-voltage resistor is measured by a bridge, wherein the resistance value is 25k ohm, and the inductance value is about 2 uH.
The most severe case of pulse voltage impact on the charge isolation resistor in the linear transformer drive source (FLTD) is: one switch is self-discharging and the other fully charged capacitor forms a discharge loop with the switch along the charging isolation resistor. At this time, the resistor was discharged by charging 100kV corresponding to 100nF capacitor, and the single pulse energy of the resistor was 500J. The simulation experiment shows that after 150 times of same-energy discharge, the resistance value of the resistor changes by less than 7%, and abnormal phenomena such as resistor damage and creeping discharge are not found.
Claims (9)
1. A solid state flexible resistor for a gas insulated pulsed power source, characterized by: the flexible shielding device comprises a conductive rubber strip (1), a flexible insulating tube (2), a shielding electrode (3), a connecting terminal (4) and a plug (5);
the outer surface of the flexible insulating pipe (2) is provided with a spiral wire groove, and the pipe walls at two ends are provided with through holes;
the conductive rubber strip (1) is wound in a spiral wire groove on the surface of the flexible insulating pipe (2), two ends of the conductive rubber strip respectively penetrate through the through hole to extend into the cavity of the flexible insulating pipe (2), and the conductive rubber strip (1) extending into the cavity of the flexible insulating pipe (2) is electrically connected with the plug (5) through the connecting terminal (4);
the shielding electrode (3) is arranged on the outer side of the connecting terminal (4) and used for insulating the electric connection position.
2. The solid state flexible resistor for a gas insulated pulsed power source of claim 1, characterized in that: the connecting terminal (4) is a brass pipe, one end of the brass pipe is sleeved on the conductive rubber strip (1), and the other end of the brass pipe is inserted into the inner hole of the plug (5) and is fixed through a screw.
3. The solid state flexible resistor for a gas insulated pulsed power source of claim 2, characterized in that: the shielding electrode (3) is provided with a step hole along the axis direction, the flexible insulating tube (2) is inserted into the large hole of the step hole, and the plug (5) is inserted into the small hole of the step hole and fixed through a jackscrew.
4. Solid-state flexible resistor for a gas-insulated pulsed power source according to claim 1, 2 or 3, characterized in that: the flexible insulating pipe (2) is made of polyvinyl chloride or polyurethane.
5. The solid state flexible resistor for a gas insulated pulsed power source of claim 4, characterized in that: the plug (5) is a banana plug.
6. The solid state flexible resistor for a gas insulated pulsed power source of claim 5, characterized in that: the cross section of the conductive rubber strip (1) is circular or square.
7. The solid state flexible resistor for a gas insulated pulsed power source of claim 6, characterized in that: the cross section size of the spiral line groove is the same as the diameter of the conductive rubber strip (1).
8. The solid state flexible resistor for a gas insulated pulsed power source of claim 7, characterized in that: the conductive rubber strip (1) takes carbon black, graphite, carbon nano tubes, metal powder or metal fibers as a conductive agent.
9. The solid state flexible resistor for a gas insulated pulsed power source of claim 8, characterized in that: the shielding electrode (3) is a sleeve with a polished outer surface and smooth transition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367642.8A CN110047635B (en) | 2019-05-05 | 2019-05-05 | Solid-state flexible resistor for gas-insulated pulsed power source |
| PCT/CN2020/086592 WO2020224446A1 (en) | 2019-05-05 | 2020-04-24 | Solid state flexible resistor for use in gas-insulated pulse power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367642.8A CN110047635B (en) | 2019-05-05 | 2019-05-05 | Solid-state flexible resistor for gas-insulated pulsed power source |
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| Publication Number | Publication Date |
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| CN110047635A CN110047635A (en) | 2019-07-23 |
| CN110047635B true CN110047635B (en) | 2021-01-05 |
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| WO (1) | WO2020224446A1 (en) |
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| CN110047635B (en) * | 2019-05-05 | 2021-01-05 | 西北核技术研究所 | Solid-state flexible resistor for gas-insulated pulsed power source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2508357Y (en) * | 2001-11-05 | 2002-08-28 | 林自新 | Improved structure of conductive film fixed resistor |
| JP4836070B2 (en) * | 2005-11-21 | 2011-12-14 | 独立行政法人日本原子力研究開発機構 | High durability type high resistor |
| CN101221844B (en) * | 2007-01-09 | 2011-07-27 | 兴亚株式会社 | Electric resistor with lead wire and manufacturing method thereof |
| CN101882491B (en) * | 2010-06-17 | 2012-08-08 | 国网电力科学研究院 | Protective resistor for use in ultrahigh-voltage very fast transient overvoltage test |
| WO2012113575A2 (en) * | 2011-02-25 | 2012-08-30 | Abb Ag | Resistive structure and resistive voltage divider arrangement |
| JP2014107311A (en) * | 2012-11-26 | 2014-06-09 | Chiba Techno:Kk | Liquid-cooled resistor |
| CN203480964U (en) * | 2013-01-30 | 2014-03-12 | 苏州电器科学研究院股份有限公司 | Medium-high-voltage cylindrical winding type noninductive resistor |
| CN203465999U (en) * | 2013-09-22 | 2014-03-05 | 隆科电子(惠阳)有限公司 | Combined device with functions of surge suppression and filtering |
| US9514864B2 (en) * | 2014-02-24 | 2016-12-06 | Sandia Corporation | Solid-state resistor for pulsed power machines |
| CN105047336B (en) * | 2015-07-15 | 2017-12-22 | 北京东方计量测试研究所 | Oil-filled type Calculable resistor |
| CN105185489B (en) * | 2015-08-26 | 2018-07-06 | 中国工程物理研究院流体物理研究所 | Low temperature small-sized pulse high-power resistance and preparation method thereof |
| CN105427973B (en) * | 2016-01-13 | 2017-12-15 | 中国工程物理研究院流体物理研究所 | A kind of high power pulsed ion beams inductive resistance |
| CN205900217U (en) * | 2016-07-26 | 2017-01-18 | 东莞市拓锋电子科技有限公司 | Screwed pipe resistor |
| CN107086098A (en) * | 2016-11-07 | 2017-08-22 | 蚌埠市正园电子科技有限公司 | The metalfilmresistor and its processing method of a kind of not equidistant grooves |
| CN207338045U (en) * | 2017-08-24 | 2018-05-08 | 江苏智达高压电气有限公司 | A kind of resistance unit structure of shielding |
| CN207381194U (en) * | 2017-11-07 | 2018-05-18 | 深圳市东凌电子有限公司 | A kind of wire resistor with circuit protection |
| CN108847323B (en) * | 2018-06-14 | 2019-12-27 | 西北核技术研究所 | High-voltage solid resistor and multi-gap series gas switch electrode for voltage sharing |
| CN208208456U (en) * | 2018-06-19 | 2018-12-07 | 蚌埠市双环电子集团股份有限公司 | A kind of spiral copped wave resistance |
| CN108933009B (en) * | 2018-08-08 | 2024-06-21 | 西北核技术研究所 | High-voltage high-power wire-wound resistor |
| CN110047635B (en) * | 2019-05-05 | 2021-01-05 | 西北核技术研究所 | Solid-state flexible resistor for gas-insulated pulsed power source |
-
2019
- 2019-05-05 CN CN201910367642.8A patent/CN110047635B/en active Active
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- 2020-04-24 WO PCT/CN2020/086592 patent/WO2020224446A1/en active Application Filing
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| WO2020224446A1 (en) | 2020-11-12 |
| CN110047635A (en) | 2019-07-23 |
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