CN103337750A - High-voltage withstand and high-current coaxial connector - Google Patents
High-voltage withstand and high-current coaxial connector Download PDFInfo
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- CN103337750A CN103337750A CN2013103061303A CN201310306130A CN103337750A CN 103337750 A CN103337750 A CN 103337750A CN 2013103061303 A CN2013103061303 A CN 2013103061303A CN 201310306130 A CN201310306130 A CN 201310306130A CN 103337750 A CN103337750 A CN 103337750A
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Abstract
The invention relates to a high-voltage withstand and high-current coaxial connector, and is suitable for the butting of coaxial single-core shielding cables under the conditions of high voltage and high current, which is mainly applied to test the opening and closing properties of novel high-power quick power semiconductor devices and is also used for connecting coaxial high-voltage cables of high-frequency, high-voltage and high-current equipment of quick power semiconductors, such as IGBT (insulated gate bipolar transistor) and MOS (metal oxide semiconductor). The butting of a wire spring pin and a matched connecting head inner conductive shaft is used as the high-current mutual-plugging connection, so a center conductive body has the capability of conducting high current. The design of a multi-layer polytetrafluoroethylene insulting sleeve pipe overlapping structure is adopted, so the connector center conductive body combination and a connector outer annular conductive body have higher insulation and voltage withstand capabilities. The connector has the advantages that the integral structure is compact, the fixing is convenient, and the connection is convenient and quick; and a 1500A and 10ms-width direct current single current pulse can pass through the connector, and the capability of isolating 12kV direct current voltage is realized.
Description
Technical field
The present invention relates to a kind of high withstand voltage big electric current coaxial connector, be applicable to the butt joint of coaxial single core shielded type cable under high voltage, the big current condition, be mainly used in high-power novel quick power semiconductor device switching characteristic test, the coaxial high-tension cable that also can be used for quick electric semiconductor such as device high-frequency and high-voltage high-current equipments such as IGBT, MOS connects.
Background technology
The present quick power semiconductor device of the big electric current of novel high-pressure such as IGBT, its operating voltage has reached 6500V, electric current reaches more than the 1000A, and its switching speed is very high, when this type of device is carried out the switch dynamic characteristic test, because the existence of circuit distributed inductance, most probably when device turn-offs, produce very high induction high pressure, as not limited, make the element overvoltage probably and damage.And in dynamic test for the tested IGBT switching characteristic of actual response, tested IGBT two ends do not allow to add the overvoltage Limiting circuit, therefore, require the circuit distributed inductance of whole test circuit as far as possible little.Distributed inductance size in the circuit flows through the area decision that the loop surrounds by electric current, when adopting coaxial cable, its arrangement of conductors inductance minimum in theory.But need to dock with test fixture by connector at IGBT dynamic test circuit standard coaxial cable, require to bear voltage between its inside and outside core and reach 10kV, electric current reaches the 1kA dc pulse current, and the existing coaxial cable connector application little electric current weak signal that all is low-voltage has designed high withstand voltage big electric current coaxial connector for this reason.
Summary of the invention
The objective of the invention is to design a kind of 10kV of satisfying direct voltage, through-current capability reaches the high withstand voltage big electric current coaxial connector of 1kA dc pulse current, satisfying the needs of high-power IGBT dynamic test, and can be applicable in the suitable coaxial cable connection line of other voltages, electric current.
Technical solution of the present invention is as follows: high withstand voltage big electric current coaxial connector, comprise Connection Block and connector, Connection Block is divided in conductive shaft (1) in the Connection Block, the Connection Block insulating case (2) and Connection Block from the inside to the outside and conducts electricity (3) three layers of flanges outward, and insulating case (2) makes in the Connection Block conductive shaft (1) and Connection Block conduct electricity flange (3) outward and realizes the high pressure isolation in the Connection Block; Connector is from the inside to the outside by Linear spring pin (6), conductive shaft (10) in the connector, coaxial electrical cable core (12), intermediate insulation cover (7), insulating case (11) in the connector, coaxial cable in-core insulating barrier (13), coaxial cable external insulation layer (14), connector flange (8), the outer conductive sleeve (5) of connector, connect lock sleeve (4), coaxial cable locking flange (9) and several parts of coaxial cable shielding layer (15) are formed, Linear spring pin (6), electric conductor in conductive shaft (10) and coaxial electrical cable core (12) are formed in the connector, intermediate insulation cover (7), insulating case (11) in the connector, coaxial cable in-core insulating barrier (13) is formed the intermediate insulation body; Connector flange (8), the outer conductive sleeve (5) of connector, connection lock sleeve (4), coaxial cable locking flange (9) and coaxial cable shielding layer (15) are formed outer electric conductor, coaxial cable shielding layer (15) one ends that are positioned between coaxial cable inner insulating layer (13) and the coaxial cable external insulation layer (14) are overlying on the connector insulating case (11), and are fixedly clamped by coaxial cable locking flange (9) and connector flange (8); The outer conductive sleeve (5) of connector flange (8) and connector is connected, and the outer conductive sleeve (5) of connector is provided with and connects lock sleeve (4), and connection lock sleeve (4) and Connection Block conduct electricity flange (3) outward and be threaded, and connector and Connection Block are combined into one.
Linear spring pin (6) surface constitutes plug by a large amount of silver-coated copper wire springs, Linear spring pin (6) is fixed on the conductive shaft in the connector (10) by screw thread, Linear spring pin (6) one ends insert conductive shaft (1) in the Connection Block, coaxial electrical cable core (12) is connected by soldering with the interior conductive shaft (10) of connector, the outer intermediate insulation cover (7) that is provided with of conductive shaft (10) in the connector, intermediate insulation cover (7) one ends insert in interior insulating case (2) cannelure (17) of Connection Block, the outer coaxial cable inner insulating layer (13) that is provided with of coaxial electrical cable core (12), intermediate insulation cover (7) is bonding by insulating cement with coaxial cable inner insulating layer (13), and intermediate insulation cover (7) and coaxial cable inner insulating layer (13) outer stack have insulating case (11) in the connector.
Coaxial cable locking flange (9) afterbody is provided with open slot and cannelure (16), and cannelure (16) can be fixed as one itself and coaxial cable external insulation layer (14), coaxial cable shielding layer (15), coaxial cable inner insulating layer (13) and coaxial electrical cable core (12) by clip.
Conductive shaft (1) one end is provided with screwed hole (18) in the Connection Block.
The present invention mainly is applicable in the high-power IGBT dynamic test coaxial connection the between the main circuit coaxial cable and test fixture, can satisfy direct current 10kV insulation voltage and by the 1kA/10ms dc pulse current.The coaxial high-tension cable that also can be used for quick electric semiconductor such as device high-frequency and high-voltage high-current equipments such as IGBT, MOS connects.The present invention adopts the interior conductive shaft butt joint of Linear spring pin and supporting connector to be connected inserting as big electric current, makes the center conductive body have the big current capacity of conducting.Adopt the design of multilayer polytetrafluoroethylarticles insulating sleeve stepped construction, make the combination of connector center conductive body have very high dielectric voltage withstand ability with connector outer shroud electric conductor.Compact overall structure, convenient fixing, it is convenient to connect, and the present invention at present can realize that by 1500A, width be the current impulse of 10ms direct current single, has the ability of isolating the 12kV direct voltage.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Embodiment
High withstand voltage big electric current coaxial connector, comprise Connection Block and connector, Connection Block is divided in conductive shaft (1) in the Connection Block, the Connection Block insulating case (2) and Connection Block from the inside to the outside and conducts electricity (3) three layers of flanges outward, and insulating case (2) makes in the Connection Block conductive shaft (1) and Connection Block conduct electricity flange (3) outward and realizes the high pressure isolation in the Connection Block; Conductive shaft (1) one end is provided with screwed hole (18) in the Connection Block.Connector is formed electric conductor in conductive shaft (10) and coaxial electrical cable core (12) are formed in Linear spring pin (6), the connector by insulating case (11), coaxial cable in-core insulating barrier (13), coaxial cable external insulation layer (14), connector flange (8), the outer conductive sleeve (5) of connector, connection lock sleeve (4), coaxial cable locking flange (9) and several parts of coaxial cable shielding layer (15) in conductive shaft (10), coaxial electrical cable core (12), intermediate insulation cover (7), the connector in Linear spring pin (6), the connector from the inside to the outside; Insulating case (11), coaxial cable in-core insulating barrier (13) are formed the intermediate insulation body in intermediate insulation cover (7), the connector; Connector flange (8), the outer conductive sleeve (5) of connector, connect lock sleeve (4), coaxial cable locking flange (9) and coaxial cable shielding layer (15) are formed outer electric conductor, Linear spring pin (6) surface constitutes plug by a large amount of silver-coated copper wire springs, Linear spring pin (6) is fixed on the conductive shaft in the connector (10) by screw thread, Linear spring pin (6) one ends insert conductive shaft (1) in the Connection Block, coaxial electrical cable core (12) is connected by soldering with the interior conductive shaft (10) of connector, the outer intermediate insulation cover (7) that is provided with of conductive shaft (10) in the connector, intermediate insulation cover (7) one ends insert in interior insulating case (2) cannelure (17) of Connection Block, the outer coaxial cable inner insulating layer (13) that is provided with of coaxial electrical cable core (12), intermediate insulation cover (7) is bonding by insulating cement with coaxial cable inner insulating layer (13), the outer interior insulating case (11) of connector that is provided with of intermediate insulation cover (7) and coaxial cable inner insulating layer (13).The coaxial cable shielding layer (15) that is positioned between coaxial cable inner insulating layer (13) and the coaxial cable external insulation layer (14) is overlying on the connector insulating case (11), and be fixedly clamped by coaxial cable locking flange (9) and connector flange 8, coaxial cable locking flange (9) afterbody is provided with open slot and cannelure (16), and cannelure (16) can be fixed as one itself and coaxial cable external insulation layer (14), coaxial cable shielding layer (15), coaxial cable inner insulating layer (13) and coaxial electrical cable core (12) by clip.The outer conductive sleeve (5) of connector flange (8) and connector is connected, and the outer conductive sleeve (5) of connector is provided with and connects lock sleeve (4), and connection lock sleeve (4) and Connection Block conduct electricity flange (3) outward and be threaded, and connector and Connection Block are combined into one.
1, design main points of the present invention
1) overall construction design
This connector main purpose is the connection that is applied to high-power IGBT dynamic test standard coaxial cable, in test, need the detected element test clamp is connected in the circuit, need be connected with anchor clamps with coaxial cable for reducing loop inductance, Connection Block with connector is designed to the ring flange form for this reason, the design of conductive shaft (1) one end central point has screwed hole (18) in the Connection Block, can conveniently be fixed on the test fixture, and convenient lead-in wire.Connector is connected with coaxial cable and can uses clip to fix, and by connecting lock sleeve (4) two parts is connected, and utilizes the insulating barrier between the internal and external conductor that interior external voltage is isolated.Electric current is flowed into by electric conductor in the coaxial connector, is flowed out by the outer electric conductor of coaxial connector.
2) big current lead-through design
For guaranteeing big conductive capability, special employing Linear spring pin (6) design at the connector center, this Linear spring pin (6) surface constitutes plug by a large amount of silver-coated copper wire springs, in inserting Connection Block in conductive shaft (1) hole time, line spring extruding contraction distortion, can increase contact area and the pressure of plug and jack, thereby reliably contact good conductive.Coaxial electrical cable core (12) is connected with the direct soldering of conductive shaft (10) in the connector in connector, guarantees reliably conduction; Conductive shaft (1) can be connected with the anchor clamps inside conductor by screw thread in the same Connection Block; Whole outer shroud forms a big conducting ring and the tight crimping of cable shield (15) is one.Can guarantee that through above design the 1kA/10ms dc pulse current passes through.
3) high withstand voltage design
Electric conductor was withstand voltage inside and outside this connector required will reach 10kV, adopts the cross layered design of the high withstand voltage insulating case of multilayer to guarantee high insulating properties for this reason.Insulating case (2) is by polytetrafluoroethylmaterial material processing in the Connection Block part, and the flange (3) that conducts electricity outside its external delay certain-length makes conductive shaft in the Connection Block (1) and Connection Block has enough insulation distances.Insulating case in Connection Block (2) other end is processed with a cannelure (17), when docking with connector, intermediate insulation cover (7) by polytetrafluoroethylmaterial material processing can insert in the cannelure (17), makes the cross layered insulation distance that guaranteed of butted part insulating barrier.For guaranteeing interior conductive shaft (10) weld seam of coaxial electrical cable core (12) and connector and cable shield (15) insulation, designed the 3rd by insulating case (11) in the connector of polytetrafluoroethylmaterial material processing, and at last with insulating cement with intermediate insulation cover (7) and the complete insulating barrier of the bonding formation of coaxial cable inner insulating layer (13), avoid the air high-voltage breakdown.It is not breakdown finally to satisfy the 12kV high direct voltage through above design.
2, actual effect
Meet design requirement through this connector of processing assembling actual tests effect at present, high dielectric voltage withstand can reach the 12kV high direct voltage, can be actual in 1500A, and width is the current impulse of 10ms direct current single, and loop inductance is reduced to designing requirement.Now be applied to IGBT dynamic test project in national 863 problems " high-voltage large-capacity power device and module testing platform ", obtained good effect.
Claims (4)
1. high withstand voltage big electric current coaxial connector, comprise Connection Block and connector, it is characterized in that: Connection Block is divided in conductive shaft (1) in the Connection Block, the Connection Block insulating case (2) and Connection Block from the inside to the outside and conducts electricity (3) three layers of flanges outward, and insulating case (2) makes in the Connection Block conductive shaft (1) and Connection Block conduct electricity flange (3) outward and realizes the high pressure isolation in the Connection Block; Connector is formed electric conductor in conductive shaft (10) and coaxial electrical cable core (12) are formed in Linear spring pin (6), the connector by insulating case (11), coaxial cable in-core insulating barrier (13), coaxial cable external insulation layer (14), connector flange (8), the outer conductive sleeve (5) of connector, connection lock sleeve (4), coaxial cable locking flange (9) and several parts of coaxial cable shielding layer (15) in conductive shaft (10), coaxial electrical cable core (12), intermediate insulation cover (7), the connector in Linear spring pin (6), the connector from the inside to the outside; Insulating case (11), coaxial cable in-core insulating barrier (13) are formed the intermediate insulation body in intermediate insulation cover (7), the connector; Connector flange (8), the outer conductive sleeve (5) of connector, connect lock sleeve (4), coaxial cable locking flange (9) and coaxial cable shielding layer (15) are formed outer electric conductor, coaxial cable shielding layer (15) one ends that are positioned between coaxial cable inner insulating layer (13) and the coaxial cable external insulation layer (14) are overlying on the connector insulating case (11), and be fixedly clamped by coaxial cable locking flange (9) and connector flange (8), connector flange (8) is connected with the outer conductive sleeve (5) of connector, the outer conductive sleeve (5) of connector is provided with and connects lock sleeve (4), connect lock sleeve (4) and Connection Block and conduct electricity flange (3) outward and be threaded, connector and Connection Block are combined into one.
2. the withstand voltage big electric current coaxial connector of height as claimed in claim 1, it is characterized in that: Linear spring pin (6) surface constitutes plug by a large amount of silver-coated copper wire springs, Linear spring pin (6) is fixed on the conductive shaft in the connector (10) by screw thread, Linear spring pin (6) one ends insert conductive shaft (1) in the Connection Block, coaxial electrical cable core (12) is connected by soldering with the interior conductive shaft (10) of connector, the outer intermediate insulation cover (7) that is provided with of conductive shaft (10) in the connector, intermediate insulation cover (7) one ends insert in interior insulating case (2) cannelure (17) of Connection Block, the outer coaxial cable inner insulating layer (13) that is provided with of coaxial electrical cable core (12), intermediate insulation cover (7) is bonding by insulating cement with coaxial cable inner insulating layer (13), the outer interior insulating case (11) of connector that is provided with of intermediate insulation cover (7) and coaxial cable inner insulating layer (13).
3. the withstand voltage big electric current coaxial connector of height as claimed in claim 1, it is characterized in that: coaxial cable locking flange (9) afterbody is provided with open slot and cannelure (16), and cannelure (16) can be fixed as one itself and coaxial cable external insulation layer (14), coaxial cable shielding layer (15), coaxial cable inner insulating layer (13) and coaxial electrical cable core (12) by clip.
4. the withstand voltage big electric current coaxial connector of height as claimed in claim 1 is characterized in that: conductive shaft (1) one end is provided with screwed hole (18) in the Connection Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306130.3A CN103337750B (en) | 2013-07-19 | 2013-07-19 | High-voltage withstand and high-current coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306130.3A CN103337750B (en) | 2013-07-19 | 2013-07-19 | High-voltage withstand and high-current coaxial connector |
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| CN103337750A true CN103337750A (en) | 2013-10-02 |
| CN103337750B CN103337750B (en) | 2015-05-13 |
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| CN201310306130.3A Active CN103337750B (en) | 2013-07-19 | 2013-07-19 | High-voltage withstand and high-current coaxial connector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169682A (en) * | 2015-05-22 | 2016-11-30 | 迪尔公司 | System or adapter for voltage bus structure |
| CN106645818A (en) * | 2016-12-13 | 2017-05-10 | 深圳市瑞能实业股份有限公司 | Large-current conductive device |
| CN108233124A (en) * | 2017-12-31 | 2018-06-29 | 中国电子科技集团公司第四十研究所 | Three coaxial high pressure electric plug connector of single |
| CN108963689A (en) * | 2018-07-16 | 2018-12-07 | 浙江德通科技有限公司 | Semi-flexible coaxial cable connector |
| CN113520572A (en) * | 2021-07-09 | 2021-10-22 | 山东华博电气有限公司 | High frequency operation equipment wire adapter |
| CN117578254A (en) * | 2024-01-19 | 2024-02-20 | 四川电器集团中低压智能配电有限公司 | Intelligent box-type heavy-current environment-friendly gas-insulated switchgear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169682A (en) * | 2015-05-22 | 2016-11-30 | 迪尔公司 | System or adapter for voltage bus structure |
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| CN108963689A (en) * | 2018-07-16 | 2018-12-07 | 浙江德通科技有限公司 | Semi-flexible coaxial cable connector |
| CN113520572A (en) * | 2021-07-09 | 2021-10-22 | 山东华博电气有限公司 | High frequency operation equipment wire adapter |
| CN117578254A (en) * | 2024-01-19 | 2024-02-20 | 四川电器集团中低压智能配电有限公司 | Intelligent box-type heavy-current environment-friendly gas-insulated switchgear |
| CN117578254B (en) * | 2024-01-19 | 2024-03-29 | 四川电器集团中低压智能配电有限公司 | Intelligent box-type heavy-current environment-friendly gas-insulated switchgear |
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| CN103337750B (en) | 2015-05-13 |
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Address after: No. 94 Zhuque Street, Xi'an City, Shaanxi Province, 710061 Patentee after: XI'AN POWER Electronics Research Institute Address before: No. 94 Zhuque Street, Xi'an City, Shaanxi Province, 710061 Patentee before: XI'AN POWER ELECTRONICS Research Institute |
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