WO2022227340A1 - 一种用于高压高频脉冲环境下的快速电连接结构 - Google Patents

一种用于高压高频脉冲环境下的快速电连接结构 Download PDF

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Publication number
WO2022227340A1
WO2022227340A1 PCT/CN2021/112664 CN2021112664W WO2022227340A1 WO 2022227340 A1 WO2022227340 A1 WO 2022227340A1 CN 2021112664 W CN2021112664 W CN 2021112664W WO 2022227340 A1 WO2022227340 A1 WO 2022227340A1
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WO
WIPO (PCT)
Prior art keywords
socket
cable
plug
annular cavity
connection structure
Prior art date
Application number
PCT/CN2021/112664
Other languages
English (en)
French (fr)
Inventor
徐向宇
李少华
袁钊
江锐
曹沛
Original Assignee
北京科益虹源光电技术有限公司
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Publication date
Application filed by 北京科益虹源光电技术有限公司 filed Critical 北京科益虹源光电技术有限公司
Priority to JP2023565441A priority Critical patent/JP2024515133A/ja
Publication of WO2022227340A1 publication Critical patent/WO2022227340A1/zh
Priority to US18/383,057 priority patent/US20240055797A1/en

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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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • 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
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/59—Threaded ferrule or bolt operating in a direction parallel to the cable or wire
    • 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]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable

Definitions

  • the invention relates to the technical field of high-voltage and high-frequency electricity, in particular to a fast electrical connection structure used in a high-voltage and high-frequency pulse environment.
  • High-voltage high-frequency pulse energy needs to be transmitted between high-frequency magnetic compression pulse switching power supplies, and corona and creepage are easily generated at the electrical joints of the connecting devices.
  • the high-voltage connectors commonly used now have strong limitations and are not suitable for certain Some high-frequency pulse high-voltage environments, such as 30 kV 6 kHz environment.
  • the use of ordinary high-voltage connectors is very easy to burn the connecting lines and connecting devices, and it is easy to cause the connecting devices to fall off, and even damage the equipment in serious cases.
  • the purpose of the present invention is to provide a fast electrical connection structure for use in a high-voltage high-frequency pulse environment, so as to solve at least one of the above technical problems existing in the prior art.
  • the present invention provides a fast electrical connection structure for use in a high-voltage high-frequency pulse environment, comprising: a plug, a socket and a cable;
  • the cable is connected to the socket through the plug;
  • the inside of the plug and the socket encloses an annular cavity arranged around the cable; the annular cavity is filled with protective fluid.
  • the present invention can effectively reduce the occurrence of corona and creepage by introducing protective fluid into the annular cavity inside the plug and socket, maintaining a high-strength insulating fluid protective layer in the annular cavity and around the cable connection part, reducing the internal humidity possible.
  • the protective fluid is an inert fluid (eg, argon, helium) or nitrogen; the protective fluid can also be a protective oil or the like.
  • the socket is provided with a socket core; the front end of the cable is provided with an electrical connector which is inserted and matched with the socket core.
  • the socket core is connected with the electrical equipment through wires drawn from the socket.
  • the socket core is made of high-conductivity anti-corrosion materials such as copper and nickel-plated;
  • the electrical connector is a banana head;
  • the banana head is an elastic electrical contact structure commonly used in electronic equipment, and the banana head can be fixedly connected to the cable by welding.
  • the pressure value of the protective fluid filled in the annular cavity is greater than the external atmospheric pressure.
  • the protective fluid in the positive pressure state in the annular cavity can maintain a high-strength insulating fluid protective layer in the annular cavity, around the electrical connector and the socket core for a longer time, effectively reducing the internal humidity, the protection effect is more durable, and the insulation effect is better. good.
  • the plug or socket is provided with an inlet for passing the protection fluid into the annular cavity.
  • the inlet is provided with a one-way valve.
  • the inlet is provided with an air inlet joint.
  • the socket or the plug is provided with an outlet communicating with the annular cavity; the outlet is provided with an overflow valve such as an overflow valve.
  • the arrangement of the outlet is beneficial to discharge the original air when the protective fluid is introduced, thereby ensuring the purity of the protective fluid in the annular cavity. And by setting a one-way conducting element such as a relief valve, the pressure value in the annular cavity can be effectively controlled.
  • the socket is provided with an accommodating groove for receiving the cable head on one side of the plug; the inner diameter of the accommodating groove is larger than the diameter of the cable, and the cable does not contact the inner side wall of the accommodating groove after the cable is inserted into the accommodating groove.
  • the socket is provided with a first annular cavity, and the first annular cavity is sleeved outside the accommodating groove; the socket is provided with an annular axial protrusion between the first annular cavity and the accommodating groove.
  • the annular axial protrusion is in the shape of a sleeve, a receiving groove is formed on the inner side thereof, and a first annular cavity is enclosed with the socket on the outer side.
  • Creepage is a slight discharge phenomenon on the surface of the insulator, especially in the connection part of the line.
  • the most prone to creepage phenomenon is the connection part between the electrical connector and the socket core, and the head end of the cable;
  • a first annular cavity is provided on the outer circumference of the accommodating groove of the head of the cable, the first annular cavity is filled with a protective fluid as a part of the annular cavity, and the first annular cavity acts like a moat to effectively prevent the electrons from going out. Propagation, limiting the creepage phenomenon to a small area inside the socket body.
  • At least the annular axial protrusion on the socket is made of insulating material, and the arrangement of the annular axial protrusion greatly increases the creepage distance, and in combination with the first ring cavity, further effectively prevents electrons from spreading outward.
  • the bottom of the first annular cavity protrudes from the bottom of the accommodating groove, and the first annular cavity completely surrounds the accommodating groove.
  • the socket includes a socket head and a socket body; the socket body is connected to the plug through the socket head; the socket body is made of insulating material, such as rubber, ceramics, PPS plastic, etc.; the receiving groove or the first ring cavity is provided in the socket body.
  • connection methods between the socket head and the socket body such as interference fit plug connection, threaded connection or snap ring locking.
  • the bottom of the accommodating slot is provided with a slot for receiving the electrical connector; the socket core is arranged in the slot. More preferably, the edge of the slot mouth is provided with a guide surface for guiding the insertion of the electrical connector.
  • the socket head is made of conductive metal materials such as brass, the socket head is provided with a radially outwardly convex annular connecting seat, and the annular connecting seat is provided with a connecting hole or a positioning hole.
  • the socket head is connected to the ground wire.
  • the socket body is provided with an annular groove on the outer circle near one end of the socket head, or a plurality of annular grooves are arranged at intervals.
  • the annular groove can effectively prevent the generation or spread of creepage along the outer surface of the socket caused by the high-voltage electric field.
  • the plug includes a plug body, and the plug body is provided with a through hole; the cable is inserted into the through hole from the second end of the plug body, and the head of the cable extends out of the through hole from the first end of the plug body; the first end of the plug body is inserted into the through hole; After the end is sealed with the socket, the head of the cable extends into the accommodating groove.
  • the inner side of the through hole is smooth without sharp points.
  • the plug also includes a fixing nut (or a fixing ring sleeve); an outer thread is provided on the outer circle of the socket head, one end of the fixing nut is provided with an inner thread, and the other end is provided with a radially convex working a ring platform; the plug body is provided with a boss that cooperates with the working ring platform; a clamping sleeve structure that can be used for butt joint of the pipe body is formed between the socket head and the fixing nut.
  • a fixing nut or a fixing ring sleeve
  • a sealing gasket can also be arranged between the plug body and the socket head to enhance its sealing performance.
  • the locking device for sealingly and fixedly connecting the cable and the plug body
  • the locking device includes: a wire locking device and a locking sleeve; the first end of the wire locking device abuts against the second end of the plug body
  • the second end of the wire locking device is provided with a plurality of elastic pieces arranged at intervals in the circumferential direction; one end of the locking sleeve is threadedly matched with the plug body, and there is a sealing structure between the two; the other end of the locking sleeve is provided with Wedge-shaped surface; the cable is inserted into the plug body through the middle through hole of the wire locker and the locking sleeve.
  • the wedge-shaped surface forces the elastic sheet to shrink radially and hold the cable tightly.
  • the inner surface of the elastic sheet is provided with anti-slip teeth or anti-slip grooves for holding the cable tightly.
  • the plug body, the locking sleeve, and the wire locking device are all made of conductive metal materials, such as brass, stainless steel, and the like. More preferably, the wire lock is made of elastic conductive material, such as beryllium bronze or the like.
  • first end of the wire locking device is provided with a ring body portion
  • the ring body portion is provided with an outer tapered surface
  • the second end of the plug body is provided with an inner tapered surface matched with the outer tapered surface.
  • the shielding net sheathed outside the cable, and the end of the shielding net (ie, one end of the cable head) is turned up and then pressed and fixed between the plug body and the wire lock. Specifically, the end of the shielding net is turned up and then pressed and fixed between the outer cone surface and the inner cone surface.
  • the other end of the locking sleeve is provided with a radially inwardly convex ring platform, and the ring platform is provided with a wedge-shaped surface; a sealing structure, such as one or several sealing rings, is arranged between the ring platform and the cable.
  • the inner diameter of the end of the through hole close to the socket is larger than the inner diameter of the end away from the socket, and the inner surface of the through hole transitions smoothly.
  • the support sleeve made of insulating material, the support sleeve is arranged in the through hole of the plug body, and is sleeved on the cable to prevent the cable from directly touching the plug body.
  • the support sleeve is made of high-strength insulating material, such as PPS, PTFE, PEEK, and the like.
  • the support sleeve is fixedly connected to the plug body by screwing, plugging or clipping.
  • the support sleeve includes a threaded portion, a frustum portion and a sleeve portion in sequence in the axial direction; the wall thickness of the frustum portion is greater than the wall thickness of the threaded portion and the sleeve portion, the frustum portion is provided with an outer frustum surface, and the plug body is provided with an outer frustum portion.
  • the support sleeve in the present application is in the shape of an arrow as a whole, and the truncated cone greatly improves its own support ability, preventing the part of the cable in the plug and socket from directly touching the plug and socket during use.
  • the outer end of the sleeve part is flush with the first end face of the plug body or protrudes from the first end face of the plug body. While improving its own support capacity, a larger first end surface is reserved as much as possible between the sleeve part and the plug body.
  • the second ring cavity further increases the volume of the protection fluid; after the plug and the socket are butted, the first ring cavity and the second ring cavity communicate with each other to form the above-mentioned annular cavity.
  • the locking sleeve is provided with an inlet; the socket body is provided with an outlet.
  • the support sleeve is provided with a fluid flow channel for protecting the passage of the fluid. Therefore, it is convenient for the protection fluid charged from the inlet of the locking sleeve to flow into the annular cavity through the fluid flow channel.
  • an anti-folding sleeve sheathed outside the cable is also included, so as to improve the bending resistance of the cable.
  • the anti-folding sleeve and the locking sleeve are fixedly connected by a snap connection or a screw thread.
  • the invention provides a fast electrical connection structure for high-voltage and high-frequency pulse environment.
  • a protective fluid By passing a protective fluid into the annular cavity inside the plug and the socket, a high-strength electrical connection is maintained in the annular cavity and around the cable connection part. Insulating fluid protective layer to reduce internal humidity, which can effectively reduce the possibility of corona and creepage.
  • FIG. 1 is a front view of a quick electrical connection structure provided by an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the socket shown in Figure 1;
  • FIG. 3 is a cross-sectional view of the plug shown in FIG. 1;
  • FIG. 4 is a perspective view of a socket head in an embodiment of the present invention.
  • Fig. 5 is the perspective view of the thread locking device in the embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the internal structure of a plug in an embodiment of the present invention.
  • FIG. 7 is a perspective cross-sectional view of a socket in an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of the introduction of protective fluid in an embodiment of the present invention.
  • FIG. 9 is a perspective view of a support sleeve in an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view of the support sleeve in the embodiment of the present invention.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • the present embodiment provides a fast electrical connection structure for use in a high-voltage high-frequency pulse environment, including: a plug 1 , a socket 2 and a cable 100 ; the cable 100 is connected to the socket through the plug 1 . 2; the plug 1 and the socket 2 enclose an annular cavity 4 surrounding the cable 100; the annular cavity 4 is filled with protective fluid.
  • the annular cavity 4 is formed by splicing the first half cavity in the plug 1 and the second half cavity in the socket 2 respectively, and the cable 100 passes through the middle of the two halves to form an annular cavity.
  • a protective fluid is introduced into the annular cavity 4 inside the plug 1 and the socket 2, a high-strength insulating fluid protective layer is maintained in the annular cavity 4 and around the connection part of the cable 100, the internal humidity is reduced, and the electric power can be effectively reduced. Halo and creepage may occur.
  • the protective fluid is preferably an inert gas, such as argon gas, helium gas, etc.; the protective fluid can also be a protective oil or the like.
  • the socket 2 is provided with a socket core 2.3; the front end of the cable 100 is provided with an electrical connector 101 which is inserted and matched with the socket core 2.3.
  • the socket core 2.3 is connected with the electrical equipment through the wires drawn from the socket 2.
  • the socket core 2.3 is made of high-conductivity anti-corrosion materials such as copper-plated nickel;
  • the electrical connector 101 is a banana head;
  • the banana head is an elastic electrical contact structure commonly used in electronic equipment, and the banana head can be fixed to the cable 100 by welding connect.
  • the pressure value of the protective fluid filled in the annular cavity 4 is greater than the external atmospheric pressure.
  • the protective fluid in the positive pressure state in the annular cavity 4 can maintain a high-strength insulating fluid protective layer in the annular cavity 4, around the electrical connector 101 and the socket core 2.3 for a longer time, effectively reducing the internal humidity, and the protection effect is more durable , the insulation effect is better.
  • the plug 1 is provided with an inlet 4.3 for introducing the protective fluid into the annular cavity 4; the inlet 4.3 is provided with an air inlet joint 1.5, and the air inlet joint 1.5 is provided with a one-way valve (not shown) .
  • the socket 2 is provided with an outlet 4.4 communicating with the annular cavity 4; the outlet 4.4 is provided with an overflow valve (not shown) such as an overflow valve.
  • the arrangement of the outlet 4.4 is beneficial to discharge the original air when the protective fluid is introduced, thereby ensuring the purity of the protective fluid in the annular cavity 4 .
  • a one-way conducting element such as a relief valve
  • the socket 2 includes a socket head 2.1 and a socket body 2.2; the socket body 2.2 is provided with a receiving groove 2.4 on one side of the plug 1 for receiving the head 102 of the cable 100; the socket body 2.2 communicates with the plug 1 through the socket head 2.1 connect.
  • the inner diameter of the accommodating groove 2.4 is larger than the diameter of the cable 100, and the cable 100 does not contact the inner side wall of the accommodating groove 2.4 after being inserted into the accommodating groove 2.4.
  • the socket head 2.1 is connected with various ways, which can be plug connection with interference fit, screw connection or snap ring locking.
  • the socket body 2.2 is made of insulating material, such as rubber, ceramics, PPS plastic and so on.
  • the socket head 2.1 is made of conductive metal material such as brass.
  • the socket head 2.1 is provided with a radially outwardly convex annular connecting seat, and the annular connecting seat is provided with a connecting hole or a positioning hole.
  • the socket head 2.1 is grounded to effectively eliminate static electricity.
  • a slot 2.5 for receiving the electrical connector 101 is provided at the bottom of the accommodating slot 2.4; the socket core 2.3 is arranged in the slot 2.5. More preferably, the edge of the slot 2.5 is provided with a chamfer for guiding the insertion of the electrical connector 101 .
  • the annular cavity 4 includes a first annular cavity 4.1 arranged in the socket body 2.2, and the first annular cavity 4.1 is sleeved outside the accommodating groove 2.4.
  • the bottom of the first annular cavity 4.1 protrudes from the bottom of the accommodating groove 2.4, that is, the first annular cavity 4.1 completely surrounds the accommodating groove 2.4.
  • An annular axial protrusion is provided between the first annular cavity 4.1 and the accommodating groove 2.4.
  • the annular axial protrusion is in the shape of a sleeve, a receiving groove 2.4 is formed on the inner side thereof, and a first annular cavity 4.1 is enclosed with the socket 2 on the outer side.
  • Creepage is a slight discharge phenomenon on the surface of the insulator, especially in the connection part of the line.
  • the most prone to creepage phenomenon is the connection part between the electrical connector 101 and the socket core 2.3, and the head of the cable 100.
  • a first annular cavity 4.1 is provided on the outer circumference of the accommodating groove 2.4 of the head 102 of the cable 100, and the first annular cavity 4.1 is filled with a protective fluid as a part of the annular cavity 4, and the first annular cavity 4.1 is
  • the cavity 4.1 acts like a moat to effectively prevent the electrons from spreading outwards, limiting the creepage phenomenon to a smaller range inside the socket body 2.2.
  • the annular axial protrusion is made of insulating material, and the arrangement of the annular axial protrusion greatly increases the creepage distance, which, in combination with the first annular cavity 4.1, further effectively prevents electrons from spreading outward.
  • the socket body 2.2 is provided with an annular groove 2.2a on the outer circle near one end of the socket head 2.1, or a plurality of annular grooves 2.2a are arranged at intervals.
  • the annular groove 2.2a can effectively prevent the generation or spread of creepage along the outer surface of the socket body 2.2 caused by the high-voltage electric field.
  • the plug 1 includes a plug body 1.1, and a through hole 1.1a is provided in the plug body 1.1; the inner side of the through hole 1.1s is smooth and has no sharp points to avoid discharge.
  • a sealing structure is provided between the plug body 1.1 and the socket head 2.1 for sealing connection between the two.
  • the cable 100 is inserted into the through hole 1.1a from the second end of the plug body 1.1, and the head 102 of the cable 100 extends out of the through hole 1.1a from the first end of the plug body 1.1; the first end of the plug body 1.1 is sealed with the socket 2 After connection, the head 102 of the cable 100 extends into the accommodating slot 2.4, and the electrical connector 101 is inserted into the slot 2.5 to be connected to the socket core 2.3.
  • the through hole 1.1a naturally forms a second annular cavity 4.2 near the head 102 of the cable 100.
  • the plug 1 further includes a fixing nut 1.7 (or a fixing ring sleeve); the outer circle of the socket head 2.1 is provided with an external thread, one end of the fixing nut 1.7 is provided with an internal thread, and the other end is provided with a
  • the working ring platform is radially inwardly convex; the plug body 1.1 is provided with a boss that cooperates with the working ring platform; the socket head 2.1 and the fixing nut 1.7 form a ferrule structure that can be used for butt joint of the pipe body.
  • the fixing nut 1.7 forces the outer end face of the boss of the plug body 1.1 to be close to each other through its working ring table.
  • a sealing gasket can also be arranged between the plug body 1.1 and the socket head 2.1 to enhance its sealing performance.
  • This embodiment also includes a locking device for sealingly and fixedly connecting the cable 100 to the plug body 1.1.
  • the locking device includes: a cable locking device 1.4 and a locking sleeve 1.3; The first end abuts against the second end of the plug body 1.1.
  • the first end of the wire locking device 1.4 is provided with a ring body portion 1.4a, and the ring body portion 1.4a is provided with an outer portion.
  • Conical surface, the second end of the plug body 1.1 is provided with an inner conical surface matched with the outer conical surface.
  • the second end of the wire locking device 1.4 is provided with a plurality of elastic pieces 1.4b arranged at intervals along the circumferential direction; one end of the locking sleeve 1.3 is screwed with the plug body 1.1, and there is a space between the locking sleeve 1.3 and the plug body 1.1.
  • a sealing structure to prevent the protective fluid from overflowing, preventing the protective fluid in the annular cavity 4 from overflowing; the other end of the locking sleeve 1.3 is provided with a wedge-shaped surface 1.3a; the cable 100 passes through the wire lock 1.4 and the middle through hole 1.1a of the locking sleeve 1.3
  • the wedge-shaped surface 1.3a forces the elastic piece 1.4b to contract radially and hold the cable 100 tightly.
  • Anti-slip teeth 1.4c for holding the cable 100 are provided on the inner surface of the elastic sheet 1.4b.
  • the plug body 1.1, the locking sleeve 1.3, and the wire locking device 1.4 are all made of conductive metal materials, such as brass, stainless steel, and the like. More preferably, the wire lock 1.4 is made of elastic conductive material, such as beryllium bronze or the like.
  • This embodiment also includes a shielding net 100a sheathed outside the cable 100, and the end of the shielding net 100a (that is, one end of the head 102 of the cable 100) is turned up and then pressed and fixed between the plug body 1.1 and the wire lock 1.4 between. Specifically, as shown in FIG. 5 , the end of the shielding mesh 100a is turned up and then pressed and fixed between the outer cone surface and the inner cone surface.
  • the shielding net 100a is a braided metal wire with many pores, and multiple fluid channels can be formed between the outer cone surface and the inner cone surface, so as to facilitate the passage of the protection fluid.
  • the socket head 2.1, the plug body 1.1 and the wire lock 1.4 are all made of conductive materials, after the shielding mesh 100a is pressed between the plug body 1.1 and the wire lock 1.4, when the socket head 2.1 is grounded, the The grounding of the shielding net 100a.
  • the locking sleeve 1.3 is provided with a radially inwardly convex ring platform, and the ring platform is provided with a wedge-shaped surface 1.3a; a sealing structure (not shown) is provided between the ring platform and the cable 100, such as one or several sealing rings, etc. , to prevent the protective fluid in the annular cavity 4 from overflowing.
  • the support sleeve 1.2 is arranged in the through hole 1.1a of the plug body 1.1, and is sleeved on the cable 100 to prevent the cable 100 from directly touching Plug body 1.1.
  • the support sleeve 1.2 is made of high-strength insulating material, such as PPS, PTFE, PEEK, or the like.
  • the support sleeve 1.2 sequentially includes a right threaded portion 1.2a, a middle frustum portion 1.2b and a left sleeve portion 1.2c in the axial direction;
  • the threaded portion 1.2a is fixedly connected to the plug body 1.1 by means of a thread.
  • the wall thickness of the frustum portion 1.2b gradually increases from right to left, and is larger than the wall thickness of the threaded portion 1.2a and the sleeve portion 1.2c.
  • the frustum portion 1.2b is provided with an external conical frustum, and the through hole of the plug body 1.1 1.1a is provided with an inner cone surface adapted to the outer cone table surface.
  • the support sleeve 1.2 in this application is in the shape of an arrow as a whole, and the truncated cone portion 1.2b greatly improves its own support ability, preventing the part of the cable 100 in the plug 1 and the socket 2 from directly touching the plug 1 and the socket during use.
  • the taper of the outer conical surface of the frustum portion 1.2b and the inner conical surface of the plug body 1.1 is 6:17.
  • the frustum portion can make the electric field between the high voltage inside the cable 100 and the shielding layer uniformly transition, which is helpful for Prevent corona and creepage.
  • the outer end of the sleeve portion 1.2c is flush with the first end face of the plug body 1.1 or protrudes from the first end face of the plug body 1.1. While improving its own support ability, the sleeve portion 1.2c and the plug body 1.1 are as close as possible to the first end face.
  • a larger second annular cavity 4.2 is reserved between them, thereby increasing the volume of the protective fluid; after the plug 1 and the socket 2 are connected, the first annular cavity 4.1 and the second annular cavity 4.2 communicate with each other to form the above-mentioned annular cavity 4 .
  • An inlet 4.3 is arranged on the locking sleeve 1.3; an outlet 4.4 is arranged on the socket body 2.2.
  • the support sleeve 1.2 is provided with a fluid flow channel 1.2d for protecting the passage of fluid. Therefore, it is convenient for the protection fluid charged into the inlet 4.3 of the self-locking sleeve 1.3 to flow into the annular cavity 4 through the fluid flow channel.
  • the protective fluid flows into the annular cavity 4 through the inlet 4.3 and through the fluid flow channel 1.2d, and the original air is discharged through the outlet 4.4, thereby forming an insulating fluid protective layer in the annular cavity 4 .
  • the pressure in the annular chamber 4 can be controlled or regulated by a pressure valve or a relief valve on the outlet 4.4.
  • this embodiment also includes an anti-folding sleeve 1.6 sheathed outside the cable 100 for improving the bending resistance of the cable 100 .
  • the anti-folding sleeve 1.6 and the locking sleeve 1.3 are fixedly connected by means of snap connection or thread.
  • the present invention provides a fast electrical connection structure for use in a high-voltage high-frequency pulse environment.
  • a protective fluid By introducing a protective fluid into the annular cavity 4 inside the plug 1 and the socket 2, in the annular cavity 4, the connection part of the cable 100 is connected.
  • a high-strength insulating fluid protective layer is maintained around to reduce the internal humidity, which can effectively reduce the possibility of corona and creepage.

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Abstract

一种用于高压高频脉冲环境下的快速电连接结构，其包括插头（1）、插座（2）和线缆（100）；所述线缆（100）通过所述插头（1）连接在所述插座（2）上；所述插头（1）和所述插座（2）内部合围出一个环绕所述线缆（100）设置的环形腔（4）；所述环形腔（4）内充填有保护流体。通过在插头（1）和插座（2）内部的环形腔（4）内通入保护流体，在环形腔（4）内、线缆（100）连接部位的周围维持高强度的绝缘流体防护层，降低内部湿度，可有效降低电晕和爬电发生可能。

Description

一种用于高压高频脉冲环境下的快速电连接结构 技术领域
本发明涉及高压高频电气技术领域，尤其是涉及一种用于高压高频脉冲环境下的快速电连接结构。
背景技术
在高频磁压缩脉冲开关电源之间需要传递高压高频脉冲能量，连接装置电接头处极易产生电晕与爬电，现在普遍采用的高压连接器使用局限性很强，并不适用于某些高频脉冲高压的环境，比如30千伏6千赫兹的环境。使用普通的高压连接器极易烧毁连接线路与连接装置，并容易发生连接装置脱落，严重的还会损坏设备。
发明内容
本发明的目的在于提供一种用于高压高频脉冲环境下的快速电连接结构，以解决现有技术中存在的至少一个上述技术问题。
为解决上述技术问题，本发明提供的一种用于高压高频脉冲环境下的快速电连接结构，包括：插头、插座和线缆；
线缆通过插头连接在插座上；
插头和插座内部合围出一个环绕线缆设置的环形腔；环形腔内充填有保护流体。
本发明通过在插头和插座内部的环形腔内通入保护流体，在环形腔内、线缆连接部位的周围维持高强度的绝缘流体防护层，降低 内部湿度，可有效降低电晕和爬电发生可能。
进一步地，保护流体为惰性流体(例如氩气、氦气)或氮气；保护流体还可以是防护油等。
进一步地，插座内设置有插座芯；线缆前端设置有与插座芯插接配合的电接头。
插座芯通过自插座内引出的导线与电气设备连接。优选地，插座芯由紫铜镀镍等高导电率防腐蚀材料制成；电接头为香蕉头；香蕉头为电子设备中常用弹性电接触结构，香蕉头可通过焊接方式与线缆固定连接。
进一步地，环形腔内充填有保护流体的压力值大于外部大气压。环形腔内的正压状态的保护流体，可更长时间地在环形腔内、电接头和插座芯的周围维持高强度的绝缘流体防护层，有效降低内部湿度，保护效果更加持久，绝缘效果更佳。
进一步地，插头或者插座上设置有用于向环形腔内通入保护流体的进口。优选地，进口上设置有单向阀。
其中优选地，进口上设置有进气接头。
进一步地，插座或插头上设置有与环形腔连通的出口；出口上设置有溢流阀等溢流阀。
出口的设置有利于在通入保护流体时将原有的空气排出，进而保证环形腔内保护流体的纯度。以及通过设置溢流阀等单向导通元件，可有效控制环形腔内的压力值。
进一步地，插座在插头一侧设置有用于接纳线缆头部的容纳槽；容纳槽的内径大于线缆的直径，线缆插入容纳槽内后线缆与容纳槽的内侧壁不接触。
进一步地，插座内设置有第一环腔，第一环腔套设在容纳槽外侧；插座在第一环腔与容纳槽之间设置有环形轴向凸起。环形轴向 凸起呈套筒状，在其内侧形成容纳槽，在外侧与插座合围出第一环腔。
爬电为绝缘体表面上的轻微放电现象，尤其在线路对接部位尤为明显，在本申请中，最容易产生爬电现象的则是电接头与插座芯的连接部位，以及线缆的头部末端；本申请通过在容纳线缆的头部的容纳槽外圆周上设置第一环腔，第一环腔作为环形腔的一部分被充填有保护流体，第一环腔如同一条护城河有效阻止了电子向外蔓延，将爬电现象限制在插座体内部的较小范围内。
插座上至少环形轴向凸起部分由绝缘材料制成，环形轴向凸起的设置大大增加了爬电距离，与第一环腔相结合，进一步有效阻止了电子向外蔓延。
进一步地，在线缆的轴向上，第一环腔的底部突出容纳槽的底部设置，第一环腔完全包裹住容纳槽。
进一步地，插座包括插座头和插座体；插座体通过插座头与插头连接；插座体由绝缘材料制成，例如橡胶、陶瓷、PPS塑料等；容纳槽或第一环腔设置在插座体内。
插座头和插座体之间连接方式多样，可以是过盈配合的插接、螺纹连接或卡环锁紧等。
进一步地，容纳槽底部设置有用于接纳电接头的插槽；插座芯设置在插槽内。更为优选地，插槽口沿处设置有引导电接头插入的导面。
进一步地，插座头由黄铜等导电金属材料制成，插座头上设置有径向上外凸的环形连接座，环形连接座上设置有连接孔或定位孔。
进一步地，插座头与地线连接。
进一步地，插座体在靠近插座头一端的外圆上设置有一个环形凹槽，或间隔设置有若干个环形凹槽。
环形凹槽可以有效防止高压电场导致沿插座体外表面产生爬电的产生或蔓延。
进一步地，插头包括插头体，插头体内设置有通孔；线缆从插头体的第二端插入通孔，线缆的头部自插头体的第一端伸出通孔；插头体的第一端与插座密封连接后，线缆的头部伸入容纳槽内。
进一步地，通孔内侧面平滑，没有尖点。
进一步地，插头体与插座头之间设置有用于两者密封连接的密封结构。
其中优选地，所述插头还包括固定螺母(或称固定环套)；所述插座头外圆上设置有外螺纹，固定螺母的一端设置有内螺纹，另一端设置有径向上内凸的工作环台；所述插头体上设置有与工作环台配合的凸台；插座头和固定螺母之间形成一个可用于管体对接的卡套结构。所述插头体的第一端插入所述插座头的中间安装孔内后，通过将固定螺母旋紧在插座头上，固定螺母通过其工作环台迫使所述插头体的凸台外侧端面紧贴靠在插座头端面上，进而实现两者的密封连接。其中，插头体与插座头之间也可设置密封垫圈加强其密封性能。
进一步地，还包括用于将线缆与插头体密封固定连接的锁紧装置，锁紧装置包括：锁线器和锁紧套；锁线器的第一端顶靠在插头体的第二端上，锁线器的第二端设置有多个沿周向间隔设置的弹性片；锁紧套的一端与插头体螺纹配合，且两者之间具有密封结构；锁紧套的另一端设置有楔形面；线缆经过锁线器和锁紧套中间通孔插入插头体，旋紧锁紧套时，楔形面迫使弹性片在径向上收缩并抱紧线缆。
进一步地，弹性片的内侧面上设置有用于抱紧线缆的防滑齿或防滑纹。
进一步地，插头体、锁紧套、锁线器均由导电金属材料制成，比如黄铜、不锈钢等。更为优选地，锁线器由弹性导电材料制成，例如铍青铜等。
进一步地，锁线器的第一端设置有环体部，环体部上设置有外锥面，插头体的第二端设置有与外锥面配合的内锥面。
进一步地，还包括套装在线缆外的屏蔽网，屏蔽网的末端(即线缆头部的一端)被翻起后被压固在插头体、和锁线器之间。具体而言，屏蔽网的末端被翻起后被压固在外锥面和内锥面之间。
进一步地，锁紧套的另一端设置有径向上内凸的环台，环台上设置有楔形面；环台与线缆之间设置有密封结构，例如一个或若干个密封圈等。
进一步地，通孔靠近插座一端的内径大于远离插座一端的内径，且通孔内表面平滑过渡。
进一步地，还包括由绝缘材料制成的支撑套，支撑套设置在插头体的通孔内，以及套装在线缆上，用于防止线缆直接触碰到插头体。
优选地，支撑套由高强度绝缘材料制成，例如PPS、PTFE、PEEK等。
进一步地，支撑套通过螺纹方式、插接或卡接方式与插头体固定连接。
进一步地，支撑套在轴向上依次包括螺纹部、锥台部和套管部；锥台部的壁厚大于螺纹部和套管部的壁厚，锥台部设置有外锥台面，插头体的通孔内设置有与外锥台面适配的内锥面。
本申请中的支撑套整体呈箭头型，锥台部大大提高了自身的支撑能力，避免在使用过程中线缆在插头和插座内的部分直接触碰到插头和插座。套管部的外侧端与插头体第一端面齐平或者突出插头 体第一端面设置，在提高其自身支撑能力的同时，尽可能地在套管部与插头体之间预留较大的第二环腔，进而提升保护流体的容积；插头和插座对接后，第一环腔和第二环腔连通构成上述的环形腔。
进一步地，锁紧套上设置有进口；插座体上设置有出口。
进一步地，支撑套上设置有用于保护流体通过的流体流道。从而便于自锁紧套进口充入的保护流体经过流体流道流入环形腔。
进一步地，还包括套装在线缆外的防折套，用于提升线缆的抗弯折能力。优选地，防折套与锁紧套通过卡接方式或螺纹方式固定连接。
采用上述技术方案，本发明具有如下有益效果：
本发明提供的一种用于高压高频脉冲环境下的快速电连接结构，通过在插头和插座内部的环形腔内通入保护流体，在环形腔内、线缆连接部位的周围维持高强度的绝缘流体防护层，降低内部湿度，可有效降低电晕和爬电发生可能。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的快速电连接结构的主视图；
图2为图1所示的插座的剖视图；
图3为图1所示的插头的剖视图；
图4为本发明实施例中插座头的立体图；
图5为本发明实施例中锁线器的立体图；
图6为本发明实施例中插头的内部结构示意图；
图7为本发明实施例中插座的立体剖视图；
图8为本发明实施例中保护流体的通入原理图；
图9为本发明实施例中支撑套的立体图；
图10为本发明实施例中支撑套的剖视图。
附图标记：
1-插头；1.1-插头体；1.1a-通孔；1.2-支撑套；1.2a-螺纹部；1.2b-锥台部；1.2c-套管部；1.2d-流体流道；1.3-锁紧套；1.3a-楔形面；1.4-锁线器；1.4a-环体部；1.4b-弹性片；1.4c-防滑齿；1.5-进气接头；1.6-防折套；1.7-固定螺母；2-插座；2.1-插座头；2.2-插座体；2.2a-环形凹槽；2.3-插座芯；2.4-容纳槽；2.5-插槽；4-环形腔；4.1-第一环腔；4.2-第二环腔；4.3-进口；4.4-出口；100-线缆；101-电接头；102-头部；100a-屏蔽网。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理 解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
下面结合具体的实施方式对本发明做进一步的解释说明。
如图1-10所示，本实施例提供的一种用于高压高频脉冲环境下的快速电连接结构，包括：插头1、插座2和线缆100；线缆100通过插头1连接在插座2上；插头1和插座2内部合围出一个环绕线缆100设置的环形腔4；环形腔4内充填有保护流体。具体而言，环形腔4分别由插头1内的第一半腔和插座2内的第二半腔拼接而成，线缆100在两个半腔中间穿过后，从而形成一个环形腔室。
本发明通过在插头1和插座2内部的环形腔4内通入保护流体，在环形腔4内、线缆100连接部位的周围维持高强度的绝缘流体防护层，降低内部湿度，可有效降低电晕和爬电发生可能。
其中，保护流体优选采用惰性气体，例如氩气、氦气等；保护流体还可以是防护油等。
如图2所示，插座2内设置有插座芯2.3；线缆100前端设置有与插座芯2.3插接配合的电接头101。
插座芯2.3通过自插座2内引出的导线与电气设备连接。优选地，插座芯2.3由紫铜镀镍等高导电率防腐蚀材料制成；电接头101为香蕉头；香蕉头为电子设备中常用弹性电接触结构，香蕉头可通过焊接方式与线缆100固定连接。
环形腔4内充填有保护流体的压力值大于外部大气压。环形腔 4内的正压状态的保护流体，可更长时间地在环形腔4内、电接头101和插座芯2.3的周围维持高强度的绝缘流体防护层，有效降低内部湿度，保护效果更加持久，绝缘效果更佳。
如图3所示，插头1上设置有用于向环形腔4内通入保护流体的进口4.3；进口4.3上设置有进气接头1.5，进气接头1.5上设置有单向阀(未示出)。插座2上设置有与环形腔4连通的出口4.4；出口4.4上设置有溢流阀等溢流阀(未示出)。出口4.4的设置有利于在通入保护流体时将原有的空气排出，进而保证环形腔4内保护流体的纯度。以及通过设置溢流阀等单向导通元件，可有效控制环形腔4内的压力值。
如图2所示，插座2包括插座头2.1和插座体2.2；插座体2.2在插头1一侧设置有用于接纳线缆100头部102的容纳槽2.4；插座体2.2通过插座头2.1与插头1连接。容纳槽2.4的内径大于线缆100的直径，线缆100插入容纳槽2.4内后与容纳槽2.4的内侧壁不接触。
插座头2.1和插座体2.2之间连接方式多样，可以是过盈配合的插接、螺纹连接或卡环锁紧等。其中，插座体2.2由绝缘材料制成，例如橡胶、陶瓷、PPS塑料等。插座头2.1由黄铜等导电金属材料制成。如图4所示，插座头2.1上设置有径向上外凸的环形连接座，环形连接座上设置有连接孔或定位孔。插座头2.1接地，从而有效消除静电。
进一步地，容纳槽2.4底部设置有用于接纳电接头101的插槽2.5；插座芯2.3设置在插槽2.5内。更为优选地，插槽2.5口沿处设置有引导电接头101插入的倒角。
环形腔4包括设置在插座体2.2内的第一环腔4.1，第一环腔4.1套设在容纳槽2.4外侧。在线缆100的轴向上，第一环腔4.1 的底部突出容纳槽2.4的底部设置，即第一环腔4.1完全包裹住容纳槽2.4。在第一环腔4.1与容纳槽2.4之间设置有环形轴向凸起。环形轴向凸起呈套筒状，在其内侧形成容纳槽2.4，在外侧与插座2合围出第一环腔4.1。
爬电为绝缘体表面上的轻微放电现象，尤其在线路对接部位尤为明显，在本申请中，最容易产生爬电现象的则是电接头101与插座芯2.3的连接部位，以及线缆100的头部102末端；本申请通过在容纳线缆100的头部102的容纳槽2.4外圆周上设置第一环腔4.1，第一环腔4.1作为环形腔4的一部分被充填有保护流体，第一环腔4.1如同一条护城河有效阻止了电子向外蔓延，将爬电现象限制在插座体2.2内部的较小范围内。环形轴向凸起部分由绝缘材料制成，环形轴向凸起的设置大大增加了爬电距离，与第一环腔4.1相结合，进一步有效阻止了电子向外蔓延。
进一步地，插座体2.2在靠近插座头2.1一端的外圆上设置有一个环形凹槽2.2a，或间隔设置有若干个环形凹槽2.2a。环形凹槽2.2a可以有效防止高压电场导致沿插座体2.2外表面产生爬电的产生或蔓延。
如图3和6所示，插头1包括插头体1.1，插头体1.1内设置有通孔1.1a；通孔1.1s内侧面平滑，没有尖点，避免产生放电现象。插头体1.1与插座头2.1之间设置有用于两者密封连接的密封结构。
线缆100从插头体1.1的第二端插入通孔1.1a，线缆100的头部102自插头体1.1的第一端伸出通孔1.1a；插头体1.1的第一端与插座2密封连接后，线缆100的头部102伸入容纳槽2.4内，电接头101插入插槽2.5与插座芯2.3连接。通孔1.1a在线缆100的头部102附近自然形成一个第二环腔4.2。
其中优选地，如图1所示，插头1还包括固定螺母1.7(或称固定环套)；插座头2.1外圆上设置有外螺纹，固定螺母1.7的一端设置有内螺纹，另一端设置有径向上内凸的工作环台；插头体1.1上设置有与工作环台配合的凸台；插座头2.1和固定螺母1.7之间形成一个可用于管体对接的卡套结构。插头体1.1的第一端插入插座头2.1的中间安装孔内后，通过将固定螺母1.7旋紧在插座头2.1上，固定螺母1.7通过其工作环台迫使插头体1.1的凸台外侧端面紧贴靠在插座头2.1端面上，进而实现两者的密封连接。其中，插头体1.1与插座头2.1之间也可设置密封垫圈加强其密封性能。
本实施例还包括用于将线缆100与插头体1.1密封固定连接锁紧装置，如图3和6所示，锁紧装置包括：锁线器1.4和锁紧套1.3；锁线器1.4的第一端顶靠在插头体1.1的第二端上，具体而言，如图5所示，锁线器1.4的第一端设置有环体部1.4a，环体部1.4a上设置有外锥面，插头体1.1的第二端设置有与外锥面配合的内锥面。锁线器1.4的第二端设置有多个沿周向间隔设置的弹性片1.4b；锁紧套1.3的一端与插头体1.1螺纹配合，且锁紧套1.3和插头体1.1两者之间具有防止保护流体溢出的密封结构，防止环形腔4中的保护流体溢出；锁紧套1.3的另一端设置有楔形面1.3a；线缆100经过锁线器1.4和锁紧套1.3中间通孔1.1a插入插头体1.1，旋紧锁紧套1.3时，楔形面1.3a迫使弹性片1.4b在径向上收缩并抱紧线缆100。弹性片1.4b的内侧面上设置有用于抱紧线缆100的防滑齿1.4c。
进一步地，插头体1.1、锁紧套1.3、锁线器1.4均由导电金属材料制成，比如黄铜、不锈钢等。更为优选地，锁线器1.4由弹性导电材料制成，例如铍青铜等。
本实施例还包括套装在线缆100外的屏蔽网100a，屏蔽网100a 的末端(即线缆100头部102的一端)被翻起后被压固在插头体1.1、和锁线器1.4之间。具体而言，如图5所示，屏蔽网100a的末端被翻起后被压固在外锥面和内锥面之间。屏蔽网100a为编织状金属线，孔隙较多，可在外锥面和内锥面之间形成多个流体通道，便于保护流体通过。因为插座头2.1、插头体1.1、和锁线器1.4均由导电材料制成，在屏蔽网100a被压在插头体1.1、和锁线器1.4之间后，在插座头2.1接地时，从而实现了屏蔽网100a的接地。
锁紧套1.3设置有径向上内凸的环台，环台上设置有楔形面1.3a；环台与线缆100之间设置有密封结构(未示出)，例如一个或若干个密封圈等，防止环形腔4中的保护流体溢出。
更为优选地，还包括由绝缘材料制成的支撑套1.2，支撑套1.2设置在插头体1.1的通孔1.1a内，以及套装在线缆100上，用于防止线缆100直接触碰到插头体1.1。
优选地，支撑套1.2由高强度绝缘材料制成，例如PPS、PTFE、PEEK等。
更优选地，参照图9和10所示，支撑套1.2在轴向上依次包括右侧的螺纹部1.2a、中间的锥台部1.2b和左侧的套管部1.2c；支撑套1.2的螺纹部1.2a通过螺纹方式与插头体1.1固定连接。锥台部1.2b的壁厚自右向左逐渐加大，且均大于螺纹部1.2a和套管部1.2c的壁厚，锥台部1.2b设置有外圆锥台面，插头体1.1的通孔1.1a内设置有与外锥台面适配的内锥面。本申请中的支撑套1.2整体呈箭头型，锥台部1.2b大大提高了其自身支撑能力，避免在使用过程中线缆100在插头1和插座2内的部分直接触碰到插头1和插座2。以及，锥台部1.2b的外圆锥台面和插头体1.1内的内锥面的锥度为6:17，锥台部可以使线缆100内部高压与屏蔽层之间的电场均匀过渡，有助于防止电晕和爬电产生。
套管部1.2c的外侧端与插头体1.1第一端面齐平或者突出插头体1.1第一端面设置，在提高其自身支撑能力的同时，尽可能地在套管部1.2c与插头体1.1之间预留较大的第二环腔4.2，进而提升保护流体的容积；插头1和插座2对接后，第一环腔4.1和第二环腔4.2连通构成上述的环形腔4。
锁紧套1.3上设置有进口4.3；插座体2.2上设置有出口4.4。参照图9和10所示，支撑套1.2上设置有用于保护流体通过的流体流道1.2d。从而便于自锁紧套1.3进口4.3充入的保护流体经过流体流道流入环形腔4。如图8所示，充气时，保护流体通过进口4.3、经流体流道1.2d流入环形腔4中，原有的空气经出口4.4被排出，从而在环形腔4内形成绝缘性的流体保护层。环形腔4内的压力可以由出口4.4上的压力阀或溢流阀控制或调解。
以及本实施例还包括套装在线缆100外的防折套1.6，用于提升线缆100的抗弯折能力。优选地，防折套1.6与锁紧套1.3通过卡接方式或螺纹方式固定连接。
本发明提供的一种用于高压高频脉冲环境下的快速电连接结构，通过在插头1和插座2内部的环形腔4内通入保护流体，在环形腔4内、线缆100连接部位的周围维持高强度的绝缘流体防护层，降低内部湿度，可有效降低电晕和爬电发生可能。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (10)

  1. 一种用于高压高频脉冲环境下的快速电连接结构，其特征在于，包括：插头(1)、插座(2)和线缆(100)；
    所述线缆(100)通过所述插头(1)连接在所述插座(2)上；
    所述插头(1)和所述插座(2)内部合围出一个环绕所述线缆(100)设置的环形腔(4)；所述环形腔(4)内充填有保护流体。
  2. 根据权利要求1所述的快速电连接结构，其特征在于，所述插头(1)或者所述插座(2)上设置有用于向所述环形腔(4)内通入所述保护流体的进口(4.3)；
    所述插座(2)或所述插头(1)上设置有与所述环形腔(4)连通的出口(4.4)；出口(4.4)上设置有溢流阀。
  3. 根据权利要求1所述的快速电连接结构，其特征在于，所述插座(2)在所述插头(1)一侧设置有用于接纳所述线缆(100)头部的容纳槽(2.4)；容纳槽(2.4)的内径大于所述线缆(100)的直径，所述线缆(100)插入容纳槽(2.4)内后线缆(100)与容纳槽(2.4)的内侧壁不接触。
  4. 根据权利要求3所述的快速电连接结构，其特征在于，所述插座(2)内设置有第一环腔(4.1)，所述第一环腔(4.1)套设在所述容纳槽(2.4)外侧；所述插座(2)在第一环腔(4.1)与所述容纳槽(2.4)之间设置有环形轴向凸起；环形轴向凸起呈套筒状，在其内侧形成所述容纳槽(2.4)，在外侧与插座(2)合围出所述第一环腔(4.1)。
  5. 根据权利要求1所述的快速电连接结构，其特征在于，所述插座(2)包括插座头(2.1)和插座体(2.2)；插座体(2.2)通过所述插座头(2.1)与所述插头(1)连接；插座头(2.1)由导 电材料制成。
  6. 根据权利要求5所述的快速电连接结构，其特征在于，所述插座体(2.2)在靠近所述插座头(2.1)一端的外圆上设置有一个环形凹槽(2.2a)，或间隔设置有若干个环形凹槽(2.2a)。
  7. 根据权利要求3所述的快速电连接结构，其特征在于，所述插头(1)包括插头体(1.1)，所述插头体(1.1)内设置有通孔(1.1a)；所述线缆(100)从插头体(1.1)的第二端插入所述通孔(1.1a)，所述线缆(100)的头部(102)自插头体(1.1)的第一端伸出所述通孔(1.1a)；所述插头体(1.1)的第一端与所述插座(2)密封连接后，所述线缆(100)的头部(102)伸入所述容纳槽(2.4)内。
  8. 根据权利要求7所述的快速电连接结构，其特征在于，所述插头(1)还包括固定螺母(1.7)；所述插座头(2.1)外圆上设置有外螺纹，固定螺母(1.7)的一端设置有内螺纹，另一端设置有径向上内凸的工作环台；所述插头体(1.1)上设置有与工作环台配合的凸台。
  9. 根据权利要求1所述的快速电连接结构，其特征在于，还包括用于将所述线缆(100)与所述插头体(1.1)密封固定连接锁紧装置，所述锁紧装置包括：锁线器(1.4)和锁紧套(1.3)；锁线器(1.4)的第一端顶靠在所述插头体(1.1)的第二端上，锁线器(1.4)的第二端设置有多个沿周向间隔设置的弹性片(1.4b)；所述锁紧套(1.3)的一端与所述插头体(1.1)螺纹配合，所述锁紧套(1.3)的另一端设置有楔形面(1.3a)；所述线缆(100)经过锁线器(1.4)和锁紧套(1.3)中间通孔(1.1a)插入所述插头体(1.1)，旋紧锁紧套(1.3)时，楔形面(1.3a)迫使弹性片(1.4b)在径向上收缩并抱紧所述线缆(100)。
  10. 根据权利要求7所述的快速电连接结构，其特征在于，所述通孔(1.1a)靠近插座(2)一端的内径大于远离插座(2)一端的内径，且通孔(1.1a)内表面平滑过渡。
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