CN219760101U - High-voltage plug-in connector - Google Patents

Abstract

The utility model provides a high-voltage plug-in type connector. The high voltage pluggable connector includes a receptacle, the receptacle including: a first housing defining a first mounting cavity; the pin assembly is at least partially positioned in the first mounting cavity and comprises pins; and a protection assembly located within the first mounting cavity, the protection assembly comprising: the first insulation plate is provided with a first sealing through hole in sealing fit with the contact pin, and is movably arranged relative to the first shell; the first elastic piece is positioned between the first front fixed end plate and the first insulating plate. The high-voltage plug-in connector of the technical scheme can solve the problems that when the existing high-voltage plug-in connector is not used, the contact heads of the pins of the socket are exposed in seawater for a long time, and are easy to corrode by the seawater or pollute by marine organisms.

Description

High-voltage plug-in connector

Technical Field

The utility model relates to the technical field of electric connectors, in particular to a high-voltage plug-in type connector.

Background

With development of ocean resources, underwater resource detection equipment, underwater charging docks, oil and gas production facilities and the like have great demands, and in general, the equipment facilities are put under water at a single point, and then are connected through underwater flying lines to transmit electric energy and photoelectric signals, so that a high-voltage connector is required to be used for meeting the requirement of plugging and unplugging the underwater high-voltage electric energy transmission flying lines on the seabed.

When the socket and the plug in the traditional underwater high-voltage plug-and-pull type electric connector are in a separated state, the contact heads of the pins in the socket are exposed outside, and the contact heads of the pins are easy to corrode by seawater or pollute by marine organisms for a long time, so that the normal use of the socket is influenced.

Disclosure of Invention

The utility model mainly aims to provide a high-voltage plug-in connector, which can solve the problems that when the existing high-voltage plug-in connector is not used, the contact head of a contact pin of a socket is exposed in seawater for a long time and is easy to be corroded by the seawater or polluted by marine organisms.

In order to achieve the above object, according to the present utility model, there is provided a high-voltage plug-in connector including a socket, the socket including: a first housing defining a first mounting cavity; the pin assembly is at least partially positioned in the first mounting cavity and comprises pins; the first front fixed end plate is connected with the first end of the first shell and positioned at the first end of the pin assembly, and the first front fixed end plate is connected with the pin assembly; and a protection assembly located within the first mounting cavity, the protection assembly comprising: the first insulation plate is provided with a first sealing through hole in sealing fit with the contact pin, and is movably arranged relative to the first shell, so that the contact head of the contact pin is provided with a first position extending out of the first sealing through hole and a second position positioned in the first sealing through hole; the first elastic piece is positioned between the first front fixed end plate and the first insulating plate and is configured to provide a force for enabling the first insulating plate to move away from the first front fixed end plate.

Further, the protection assembly further comprises a second insulating plate connected with the first insulating plate, the second insulating plate is located on one side, facing the first front fixed end plate, of the first insulating plate, a second sealing through hole in sealing fit with the contact pin is formed in the second insulating plate, and the second insulating plate is movably arranged relative to the first shell.

Further, a balance groove is formed in the second insulating plate, a balance cavity is formed between the balance groove and the wall surface of the first insulating plate in a surrounding mode, and the balance cavity is configured to be capable of containing insulating oil.

Further, the contact pin assembly further comprises an insulation whole set, wherein the insulation whole set is arranged on the periphery of at least part of the contact pins, and the insulation whole set is of an integrated structure.

Further, a first pressure hole is formed in the first shell, a deformation space is formed between the first front fixed end plate and the first insulating plate, and the first pressure hole is communicated with the deformation space.

Further, the high-voltage plug-in connector further includes a plug configured to be insertable into the first mounting cavity from the second end of the receptacle, the plug including: a second housing defining a second mounting cavity; the jack assembly is located in the second mounting cavity, the jack assembly comprises an inner oil bag, an insulating front sleeve and an insulating middle sleeve, the first end of the insulating front sleeve is electrically connected with the contact head of the contact pin, the inner oil bag is sleeved on the insulating front sleeve and the insulating middle sleeve, and the inner oil bag is used for containing insulating oil.

Further, the plug also comprises an outer oil bag sleeved on the inner oil bag, wherein the outer oil bag has deformability and is configured to contain insulating oil, and the outer wall surface of the outer oil bag is wavy or folded.

Further, a second pressure hole is formed in the insulating middle sleeve, and the inner oil bag is communicated with the insulating middle sleeve through the second pressure hole.

Further, the jack assembly further comprises an insulation rear sleeve and an electric connecting piece, the second end of the insulation front sleeve is connected with the first end of the insulation rear sleeve, the insulation rear sleeve is arranged on the periphery of the electric connecting piece, and the insulation rear sleeve is of an integrated structure.

Further, the jack assembly further comprises an electrical connector and a second elastic member, the plug further comprises a switching assembly, the switching assembly comprises a connecting terminal, the first end of the electrical connector is connected with the second elastic member, the second end of the electrical connector is electrically connected with the first end of the connecting terminal in a detachable mode, and the second end of the connecting terminal is configured to be electrically connected with the cable.

By applying the technical scheme of the utility model, when the socket is not used, the first elastic piece is kept to be original length, so that the contact head of the contact pin is positioned at the second position, namely, in the first sealing through hole of the first insulating plate; when the socket is used, the first insulating plate moves along the first shell under the action of external force, so that the contact head of the pin is positioned at a first position, namely extends out of the first sealing through hole. When the socket is positioned in the sea water and is not connected with the plug, the contact head of the pin is sealed in the first sealing through hole through the protection component, so that the sea water is prevented from directly contacting with the contact head of the pin, further the sea water is prevented from corroding the contact head of the pin, the contact head of the pin is prevented from being polluted by marine organisms, and the situation that the socket cannot be normally used due to the fact that the contact head of the pin is exposed in the sea water is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic diagram of a high voltage plug-and-socket connector (wherein a plug and a socket are in a plugged state) according to an embodiment of the present utility model;

FIG. 2 shows a schematic diagram of the high voltage pluggable connector of FIG. 1 (with the plug and receptacle in an unplugged state);

FIG. 3 shows a cross-sectional view of the high voltage pluggable connector of FIG. 1 (with the plug and receptacle in the plugging process);

FIG. 4 shows a cross-sectional view of the high voltage pluggable connector of FIG. 1 (with the plug and receptacle in a plugged state);

FIG. 5 shows a cross-sectional view of the receptacle of FIG. 1;

FIG. 6 shows a schematic view of another angle of FIG. 5;

FIG. 7 illustrates a schematic structural view of the pin assembly of FIG. 5;

FIG. 8 shows a cross-sectional view of FIG. 7;

fig. 9 shows a schematic structural view of the protection assembly of fig. 5;

FIG. 10 shows a cross-sectional view of FIG. 9;

FIG. 11 illustrates a schematic structural view of the second insulating plate of FIG. 5;

fig. 12 shows a cross-sectional view of the plug of fig. 1;

FIG. 13 shows a schematic view of another angle of FIG. 12

FIG. 14 shows a cross-sectional view of the jack assembly of FIG. 12;

FIG. 15 shows a schematic structural view of the front cover of FIG. 14;

FIG. 16 shows a schematic structural view of the middle sleeve of FIG. 14;

FIG. 17 illustrates a cross-sectional view of the insulative rear sleeve, electrical connector, and adapter assembly of FIG. 12 mated;

fig. 18 is a schematic view showing the structure of the connection terminal of fig. 17; and

FIG. 19 shows a schematic view of the structure of FIG. 18 at another angle;

wherein the above figures include the following reference numerals:

10. a socket; 11. a first housing; 111. a first pressure port; 12. a pin assembly; 121. a contact pin; 122. insulating the whole set; 123. an insulating pad; 13. a first front fixed end plate; 14. a protection component; 141. a first insulating plate; 1411. a first sealed through hole; 142. a first elastic member; 143. a second insulating plate; 1431. a sliding section; 1432. an extension section; 1433. a balancing groove; 1434. a second sealed through hole; 14341. a first bore section; 14342. a second bore section; 15. a guide cylinder; 16. a cover plate; 20. a plug; 21. a second housing; 22. a jack assembly; 221. an inner oil bag; 222. an insulating front sleeve; 2221. a spring plate; 223. an insulating middle sleeve; 2231. a second pressure port; 224. a blocking member; 2241. a groove; 225. a second elastic member; 226. an insulating rear sleeve; 227. an electrical connection; 23. a second front fixed end plate; 24. an outer oil pocket; 25. a switching component; 251. a connection terminal; 2511. a first groove; 2512. a second groove; 252. a semiconductive jacket; 253. an insulating rubber sleeve; 26. a support plate; 27. a support rod; 28. and fixing the end plate.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The high voltage in the present utility model means 8kV, 220A and above.

Referring to fig. 1 to 6, fig. 9 and 10, the present utility model provides a high voltage plug-in connector. The high-voltage plug-in connector comprises a socket 10, wherein the socket 10 comprises a first shell 11, a pin assembly 12, a first front fixed end plate 13 and a protection assembly 14, and the first shell 11 defines a first mounting cavity; at least a portion of the pin assembly 12 is located within the first mounting cavity, the pin assembly 12 including a pin 121; the first front fixed end plate 13 is connected with the first end of the first shell 11 and is positioned at the first end of the pin assembly 12, and the first front fixed end plate 13 is connected with the pin assembly 12; the protection component 14 is located in the first mounting cavity, the protection component 14 comprises a first insulation plate 141 and a first elastic piece 142, a first sealing through hole 1411 in sealing fit with the pin 121 is formed in the first insulation plate 141, and the first insulation plate 141 is movably arranged relative to the first shell 11 so that the contact head of the pin 121 has a first position extending out of the first sealing through hole 1411 and a second position located in the first sealing through hole 1411; the first elastic member 142 is located between the first front fixed end plate 13 and the first insulating plate 141, and the first elastic member 142 is configured to be able to provide a force that moves the first insulating plate 141 away from the first front fixed end plate. The socket 10 further includes a guide cylinder 15, the guide cylinder 15 is horn-shaped, a small diameter end of which is screw-coupled with the second end of the second housing 21, and when the plug 20 is coupled with the socket 10, the plug 20 enters the first installation cavity of the first housing 11 from a large diameter end of the guide cylinder 15.

In the above technical solution, the first housing 11 is cylindrical, and the inside thereof is the first mounting cavity. The pin assemblies 12 are three evenly circumferentially arranged. The first front fixed end plate 13 is in threaded connection with the first end of the first shell 11, the second end of the first front fixed end plate 13 is provided with a cover plate 16, the cover plate 16 is fixedly connected with the first front fixed end plate 13 through bolts, three through holes are formed in the first front fixed end plate 13, three through holes are also formed in the cover plate 16, the three through holes in the first front fixed end plate 13 are respectively coaxial and concentric with the three through holes in the cover plate 16, the first ends of the three contact pin assemblies 12 respectively penetrate through the three through holes in the cover plate 16 and the three through holes in the first front fixed end plate 13 in sequence, and the three contact pin assemblies 12 are in sealing connection with the three through holes in the first front fixed end plate 13 through sealing rings, so that the contact pin assemblies 12 are fixed by the cover plate 16 and the first front fixed end plate 13, and the contact pin assemblies 12 are always in a static state.

The peripheral side surface of the first insulating plate 141 is in sliding fit with the inner wall surface of the first housing 11, and the first seal through hole 1411 is in sealing sliding fit with the pin assembly 12 by a seal ring. When the first insulating plate 141 receives a force toward the first front fixed end plate 13, the first insulating plate 141 moves in a direction approaching the first front fixed end plate 13, compressing the first elastic member 142, the pin assembly 12 moves relative to the first seal through hole 1411, and the contact head of the pin 121 is exposed from the first seal through hole 1411; when the force applied to the first insulating plate 141 disappears, the first elastic member 142 recovers its original length by the principle of elastic deformation, pushing the first insulating plate 141 to move in a direction away from the first front fixed end plate 13, the pin assembly 12 moves relative to the first seal through hole 1411, and the contact head of the pin 121 enters the first seal through hole 1411 again.

Through the above arrangement, when the socket 10 is not plugged with the plug 20, the first insulation plate 141 is not subjected to external force, the first elastic element 142 is in an original long state, the contact of the pin 121 is positioned in the first sealing through hole 1411, namely, the contact of the pin 121 is isolated from seawater, and the first insulation plate 141 is matched with the first elastic element 142, so that the contact of the pin 121 is not exposed in the seawater for a long time, and further, the contact of the pin 121 is prevented from being corroded by the seawater or polluted by marine organisms for a long time.

Referring to fig. 5 and 6, and fig. 9 to 11, in one embodiment of the present utility model, the protection assembly 14 further includes a second insulation plate 143 connected to the first insulation plate 141, the second insulation plate 143 being located at a side of the first insulation plate 141 facing the first front fixing end plate 13, the second insulation plate 143 being provided with a second sealing through hole 1434 in sealing engagement with the pin 121, the second insulation plate 143 being movably disposed with respect to the first housing 11.

In the above technical solution, the second insulating plate 143 includes a sliding section 1431 and an extending section 1432 integrally connected, the first end of the extending section 1432 is connected with the first insulating plate 141 by a bolt, the sliding section 1431 is located at the second end of the extending section 1432, the diameter of the sliding section 1431 is larger than that of the extending section 1432, the outer periphery side of the sliding section 1431 is slidably matched with the inner wall surface of the first housing 11, the first elastic member 142 is a spring, the end of the first elastic member 142 is fixedly connected with the first front fixed end plate 13, the second end of the first elastic member 142 is sleeved on the extending section 1432, and the end of the second end of the first elastic member 142 is fixedly connected with the second end edge of the sliding section 1431. When the first insulating plate 141 moves by an external force, the second insulating plate 143 is driven to move synchronously.

Through the above arrangement, the extension section 1432 limits the compression direction of the first elastic element 142, so that the first elastic element 142 is always compressed along the axial direction of the first housing 11, and smooth movement of the pin assembly 12 relative to the first sealing through hole 1411 and the second sealing through hole 1434 is ensured.

Referring to fig. 5 and 6, and fig. 9 to 11, in one embodiment of the present utility model, a balance groove 1433 is formed in the second insulating plate 143, and a balance cavity is defined between the balance groove 1433 and a wall surface of the first insulating plate 141, and is configured to be capable of containing insulating oil.

In the above technical solution, the balancing groove 1433 is a cylindrical groove (for example, cylindrical), the second sealing through hole 1434 is formed on the bottom wall of the balancing groove 1433, the second sealing through hole 1434 is divided into a first hole section 14341 and a second hole section 14342 along the forming depth of the balancing groove 1433, the aperture of the first hole section 14341 is larger than that of the second hole section 14342, the first hole section 14341 is not contacted with the contact pin assembly 12, insulating oil is introduced into the first hole section 14341, and the inner wall of the second hole section 14342 is in sealing sliding fit with the contact pin assembly 12 through a sealing ring. The balance groove 1433, the first seal through hole 1411, and the second seal through hole 1434 communicate with each other.

Through the above arrangement, the insulating oil can balance the external and internal pressures of the first sealing through hole 1411 and the external and internal pressures of the second sealing through hole 1434, the socket 10 is located in the deep sea, the insulating oil plays a supporting role, and the contact pin assembly 12 is prevented from being damaged by compression caused by excessive seawater pressure.

Referring to fig. 5-8, in one embodiment of the present utility model, the contact pin assembly 12 further includes an insulation sleeve 122, wherein the insulation sleeve 122 is disposed at least partially around the outer periphery of the contact pin 121, and the insulation sleeve 122 is of a unitary construction.

In the above technical solution, the insulation complete set 122 is an integrally formed structure using an injection molding process. The end of the second end of the pin 121 is further fixed with an insulating pad 123, the insulating pad 123 is located outside the first sealing through hole 1411, and one end of the insulating pad 123, which faces away from the pin 121, is a hemispherical surface.

The whole insulating cover 122 of tradition is fixed formation for the external member concatenation that a plurality of independence set up, exists the fit clearance between every external member, produces the risk of creepage easily, and the whole insulating cover 122 of setting through above-mentioned integrated into one piece for the whole insulating cover 122 does not have the clearance, just can not consequently cause creepage yet, improves the high pressure resistance performance of contact pin subassembly 12.

Referring to fig. 1 to 6, in one embodiment of the present utility model, a first pressure hole 111 is formed in a first housing 11, a deformation space is formed between a first front fixing end plate 13 and a first insulating plate 141, and the first pressure hole 111 communicates with the deformation space.

In the above-described technical solution, when the first insulating plate 141 compresses the first elastic member 142 by an external force, the deformation space is compressed by the first insulating plate 141 and the second insulating plate 143, and the seawater in the deformation space is discharged from the first pressure hole 111; when the force applied to the first insulating plate 141 disappears, the first elastic member 142 restores the original length, drives the second insulating plate 143 and the first insulating plate 141 to move, restores the deformation space, and external seawater enters the deformation space from the first pressure hole 111 to fill the deformation space.

Through the above arrangement, smooth expansion and contraction of the first elastic member 142 can be ensured, and pressure balance inside and outside the deformation space can also be ensured, so that pressure balance inside and outside the first housing 11 is ensured.

Referring to fig. 12 to 14, in one embodiment of the present utility model, the plug-in high voltage connector further includes a plug 20, the plug 20 being configured to be inserted into the first mounting cavity from the second end of the socket 10, the plug 20 including a second housing 21, a jack assembly 22, and a second front fixed end plate 23, the second housing 21 defining a second mounting cavity; the jack assembly 22 is located in the second installation cavity, the jack assembly 22 comprises an inner oil bag 221, an insulating front sleeve 222, an insulating middle sleeve 223 and a blocking piece 224, a first end of the insulating front sleeve 222 is electrically connected with a contact head of the contact pin 121, a second end of the insulating front sleeve 222 is connected with an insulating rear sleeve 226, the inner oil bag 221 is sleeved on the insulating front sleeve 222 and the insulating middle sleeve 223, the inner oil bag 221 is configured to be capable of containing insulating oil, the insulating front sleeve 222 is arranged on the periphery of at least part of the blocking piece 224, and the blocking piece 224 is in sealing sliding fit with the insulating front sleeve 222 and the insulating middle sleeve 223 through sealing rings; the second front fixed end plate 23 is screwed to the first end of the second housing 21.

In the above technical solution, the inner wall of the inner oil bag 221 is fixedly connected with the outer wall of the insulation front sleeve 222, so that the blocking piece 224 will not drive the inner oil bag 221 to move during the movement of the blocking piece 224 relative to the inner oil bag 221. The inner wall of the first end of the insulating front sleeve 222 is provided with a spring 2221, and the spring 2221 is used for contacting with the contact head of the pin 121 to conduct electricity. The jack assemblies 22 are three uniformly arranged circumferentially, the three jack assemblies 22 are in one-to-one correspondence with the three pin assemblies 12, three through holes are formed in the second front fixing end plate 23, and the first ends of the plugging pieces 224 of the three jack assemblies 22 are aligned with the three through holes respectively. The plugging members 224 are made of insulating materials, semicircular grooves 2241 are formed in the end face of the first end of each plugging member 224, the semicircular grooves 2241 are matched with the insulating pads 123 of the corresponding pins 121, and when the plug 20 is plugged with the socket 10, the grooves 2241 of each plugging member 224 are respectively attached to the insulating pads 123 of each pin 121.

With the above arrangement, the cooperation of the groove 2241 and the insulating pad 123 achieves positioning of the plug 20 and the receptacle 10 such that the movement path of the pin assembly 12 is the same as the movement path of the receptacle assembly 22. The insulating oil in the inner oil bladder 221 serves to balance the pressure inside and outside the inner oil bladder 221, supports the jack assembly 22, and also serves to insulate the inside of the inner oil bladder 221 from electrical conduction with the elastic sheet 2221.

Referring to fig. 12 and 13, in one embodiment of the present utility model, the plug 20 further includes an outer oil bladder 24 sleeved on the inner oil bladder 221, the outer oil bladder 24 having deformability and being configured to contain insulating oil, and an outer wall surface of the outer oil bladder 24 being in a wave shape or a folded line shape.

In the above-described technical solution, the insulating oil in the inner oil pocket 221 is not communicated with the insulating oil in the outer oil pocket 24, and pressure balance can be achieved between the two through the insulating oil. When the pressure inside the outer oil bag 24 changes, the wall surface of the outer oil bag 24 deforms, and the pressure inside the outer oil bag 24 is balanced. The outer oil bag 24 is made of an insulating material having elastic deformation such as rubber. Three through holes are formed in the first end of the outer oil bag 24, the plugging pieces 224 of the three jack assemblies 22 respectively penetrate through the three through holes, and the plugging pieces 224 are in sealing fit with the through holes of the outer oil bag 24 through sealing rings.

With the above arrangement, the deformation amount of the outer oil bag 24 increases, and when the pressure inside and outside the outer oil bag 24 changes, the outer oil bag 24 can balance the pressure by way of deformation. The outer oil bag 24 is also used for supporting the three jack assemblies 22, and insulating oil in the outer oil bag 24 fills gaps among the three jack assemblies 22 to prevent the jack assemblies 22 from being damaged by the seawater pressure.

Referring to fig. 12-14, in one embodiment of the present utility model, the jack assembly 22 further includes a second resilient member 225.

In the above technical solution, the insulating middle sleeve 223 is disposed on the outer periphery of the second elastic member 225, the first end of the blocking member 224 faces the second front fixing end plate 23, and the second end of the blocking member 224 is fixedly connected with the first end of the second elastic member 225. When the blocking piece 224 receives a force towards the second elastic piece 225, the blocking piece 224 moves relative to the insulating front sleeve 222, the second elastic piece 225 is compressed, when the force applied to the blocking piece 224 disappears, the second elastic piece 225 recovers to be long through the elastic deformation principle, the blocking piece 224 is pushed to move towards the direction away from the second elastic piece 225, the blocking piece 224 moves relative to the insulating front sleeve 222, and the blocking piece 224 is contacted with the elastic piece 2221 again. The blocking member 224 is an insulating material.

Through the arrangement, when the plug 20 is not plugged with the socket 10, the blocking piece 224 is not subjected to external force, the second elastic piece 225 is in an original long state, the elastic piece 2221 is abutted against the blocking piece 224, the blocking piece 224 isolates the elastic piece 2221 from electricity, the safety of the elastic piece 2221 is ensured, and the blocking piece 224 also isolates the elastic piece 2221 from seawater, so that the elastic piece 2221 is prevented from being corroded by seawater and polluted by marine organisms.

Referring to fig. 14 and 16, in one embodiment of the present utility model, the insulating middle sleeve 223 is provided with a second pressure hole 2231, and the inside of the inner oil bladder 221 and the inside of the insulating middle sleeve 223 are communicated through the second pressure hole 2231.

In the above-mentioned technical solution, the second pressure hole 2231 communicates the inside of the inner oil bladder 221 with the inside of the insulating middle sleeve 223, and when the blocking member 224 compresses the second elastic member 225 by an external force, the insulating oil in the insulating middle sleeve 223 is discharged from the second pressure hole 2231 into the inner oil bladder 221; when the force applied to the blocking member 224 is removed, the second elastic member 225 is restored to its original length, driving the blocking member 224 to move, and the insulating oil in the inner oil bladder 221 enters the insulating middle cover 223 from the second pressure hole 2231.

By the above arrangement, smooth expansion and contraction of the second elastic member 225 can be ensured, and pressure balance between the inside and the outside of the insulating middle sleeve 223 can also be ensured, thereby ensuring pressure balance between the inside and the outside of the inner oil bag 221.

Referring to fig. 17-19, in one embodiment of the present utility model, the jack assembly 22 further includes an insulating rear sleeve 226 and an electrical connector 227, wherein the insulating rear sleeve 226 is disposed on the outer periphery of the electrical connector 227, and the insulating rear sleeve 226 is of unitary construction.

In the above-described embodiments, the insulating rear cover 226 is integrally formed by injection molding.

The traditional insulating rear sleeve 226 is formed by splicing and fixing a plurality of sleeve members, a fit clearance exists between each sleeve member, the risk of creepage is easy to generate, the insulating rear sleeve 226 is arranged through the integral forming, the insulating rear sleeve 226 has no clearance, creepage is not caused, and the high voltage resistance of the electric connecting piece 227 is improved.

Referring to fig. 17 to 19, in one embodiment of the present utility model, the plug 20 further includes a switching assembly 25, the switching assembly 25 includes a connection terminal 251, a first end of the electrical connector 227 is connected to the second elastic member 225, a second end of the electrical connector 227 is electrically connected to the first end of the connection terminal 251 in a detachable manner, and a second end of the connection terminal 251 is configured to be electrically connected to a cable.

The first end and the second end of the connection terminal 251 are respectively provided with a first groove 2511 and a second groove 2512, the opening edge of the first groove 2511 has elasticity, the opening of the first groove 2511 is elastically deformed in the process of inserting the second end of the connection terminal 251 into the first groove 2511, the opening is enlarged, the second end of the electric connection piece 227 can be smoothly inserted into the first groove 2511, the electric connection piece 227 is further electrically connected with the connection terminal 251, the positioning ring extends inwards from the opening edge of the first groove 2511, the second end of the electric connection piece 227 is circumferentially provided with a positioning groove, and the second end of the electric connection piece 227 is inserted into the first groove 2511 until the positioning ring is clamped into the positioning groove, so that the electric connection piece 227 is relatively fixed with the connection terminal 251; a cable is inserted and fixed in the second groove 2512, and the cable is electrically connected to the connection terminal 251.

The adaptor assembly 25 further comprises a semiconductive sleeve 252 and an insulating rubber sleeve 253, wherein the semiconductive sleeve 252 is arranged on the periphery of at least part of the insulating rear sleeve 226 and the connecting terminal 251, and the insulating rubber sleeve 253 is arranged on the periphery of the semiconductive sleeve 252; the outer circumference of the insulating rear cover 226 is provided with a fixing groove, and the ends of the second ends of the semiconductive cover 252 and the insulating rubber cover 253 are clamped into the fixing groove, so that the semiconductive cover 252 and the insulating rubber cover 253 are relatively fixed with the insulating rear cover 226.

Through above-mentioned setting, cable and electric connector 227 pass through connecting terminal 251 interconnect, when the cable needs to be changed or overhauld, with connecting terminal 251 and electric connector 227 separate just can realize the change of cable, compare in traditional high-pressure plug-in connector's electric connector and the direct mode through fixed connection of cable, connecting terminal 251's existence in this scheme does not need to waste time and energy with electric connector 227 with cable separation, only need to separate electric connector 227 and connecting terminal 251 for the change or the maintenance of cable are more convenient, and then improve the efficiency that the cable overhauld.

Referring to fig. 12 and 13, in one embodiment of the present utility model, the plug 20 further includes a support plate 26, a support rod 27 and a rear fixing end plate 28, three through holes are formed in the support plate 26, and the plugging members 224 of the three jack assemblies 22 respectively pass through the three through holes of the support plate 26 and are in sealing sliding fit with the three through holes through sealing rings; the backup pad 26 is located outside the oil bag 24 to laminating outside the inner wall of oil bag 24 is fixed, the first end and the backup pad 26 fixed connection of bracing piece 27, the second end and the back fixed end plate 28 fixed connection of bracing piece 27, outside the second end of oil bag 24 also with back fixed end plate 28 fixed connection, back fixed end plate 28 is located the second installation intracavity, and pass through sealing washer sealing fixed connection with the inner wall of second shell 21, three through-holes have been seted up on the back fixed end plate 28, the second end of the interior oil bag 221 of three jack subassembly 22, at least part of electric connector 227, at least part of insulating back cover 226 all are located the through-hole of back fixed end plate 28, the second end of interior oil bag 221 and at least part of insulating back cover 226 all pass through sealing washer sealing fixed connection with the through-hole of back fixed end plate 28.

In the above technical solution, the support rods 27 are three uniformly circumferentially arranged for assisting the insulating oil inside the outer oil bladder 24 to support the jack assembly 22. The rear fixed end plate 28 is used to support the jack assembly 22 and also to block the second end of the outer oil bladder 24, creating a sealed space within the outer oil bladder 24. The three through holes of the second front fixing end plate 23, the three through holes of the outer oil bag 24, the three through holes of the supporting plate 26 and the three through holes of the rear fixing end plate 28 are coaxially and concentrically corresponding one by one.

The insulating oil in the present utility model may be simethicone, or other kinds of insulating oil such as fluorinated oil may be used. The insulating sleeve 122 and the insulating rear sleeve 226 may be made of PEEK material, or other insulating materials, such as PPS.

The utility model is applied to the quick butt joint of various high-voltage transmission systems, is particularly suitable for the quick connection of underwater equipment and facilities, can be widely applied to underwater resource detection equipment, underwater charging docks, oil and gas production facilities and the like, has an application water depth of 7000m, has a use voltage of more than 15kV and has a use current of more than 250A.

Referring to fig. 1 to 4, the process of plugging the plug 20 into the socket 10 is as follows:

the plug 20 moves towards the direction approaching to the socket 10, enters the first mounting cavity of the first housing 11 from the guide cylinder 15 of the socket 10 until the groove 2241 of the blocking piece 224 is attached to the insulating sleeve, the plug 20 continues to move in the same direction, the second front fixed end plate 23 pushes the first insulating plate 141 to move relative to the first housing 11, the first insulating plate 141 drives the second insulating plate 143 to move, the second insulating plate 143 compresses the first elastic piece 142, seawater in the deformation space is discharged from the first pressure hole 111, simultaneously, the contact heads of the pins 121 are exposed from the first sealing through holes 1411 and enter from the through holes of the second front fixed end plate 23, the blocking piece 224 is pushed to move and compress the second elastic piece 225, insulating oil in the insulating middle sleeve 223 is discharged from the second pressure hole 2231 into the inner oil bag 221, the contact heads of the pins 121 sequentially pass through the through holes of the second front fixed end plate 23, the through holes of the outer oil bag 24 and the through holes of the supporting plate 26, and sequentially enter the outer oil bag 24 and the insulating front sleeve 222 until the contact heads of the pins 121 are contacted with the specific elastic piece 222 of the plug 10 (see fig. 22220).

Referring to fig. 1 to 4 and 15, the plug 20 and the socket 10 are pulled out:

the plug 20 moves towards the direction away from the socket 10, the first elastic piece 142 gradually recovers the original length, the second insulating plate 143 is pushed to move relative to the first shell 11, the second insulating plate 143 drives the first insulating plate 141 to move, external sea water enters the deformation space from the first pressure hole 111, meanwhile, the second elastic piece 225 gradually recovers the original length, the contact head of the pin 121 is separated from the elastic piece 2221 of the insulation front sleeve 222, and sequentially withdraws from the insulation front sleeve 222 and the inner oil bag 221, and sequentially penetrates out of the through hole of the support plate 26, the through hole of the outer oil bag 24 and the through hole of the second front fixed end plate 23, the plug 20 continues to move, the groove 2241 of the plugging piece 224 is separated from the insulation pad 123, the first elastic piece 142 and the second elastic piece 225 are in the original length state, the plug 20 continues to move until withdrawing from the first installation cavity and the guide cylinder 15, and the plug 20 and the socket 10 are completed.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

(1) The protection component is additionally arranged, when the plug is not connected with the socket in an inserting mode, the first elastic piece is in an original long state, the contact head of the contact pin is located in the first sealing through hole of the first insulation plate, the contact head of the contact pin is isolated from seawater, the contact head of the contact pin is protected, and the service life of the contact pin is prolonged.

(2) The cooperation of interior oil bag and outer oil bag guarantees pressure balance when realizing insulating function, prevents that seabed pressure from damaging the jack subassembly excessively.

(3) The integrated molding design of the whole insulation set and the insulation rear sleeve reduces the risk of creepage and improves the plugging safety of the plug and the socket.

(4) The connecting terminal is additionally arranged, so that the cable and the electric connecting piece are convenient to detach, and the cable is convenient to replace and overhaul.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A high voltage plug-in connector, comprising a socket (10), the socket (10) comprising:

a first housing (11) defining a first mounting cavity;

-a pin assembly (12), at least part of the pin assembly (12) being located within the first mounting cavity, the pin assembly (12) comprising a pin (121);

a first front fixed end plate (13) connected with the first end of the first housing (11) and located at the first end of the pin assembly (12), the first front fixed end plate (13) being connected with the pin assembly (12); and

-a protection assembly (14) located within the first mounting cavity, the protection assembly (14) comprising:

a first insulation plate (141), wherein a first sealing through hole (1411) in sealing fit with the pin (121) is formed in the first insulation plate (141), and the first insulation plate (141) is movably arranged relative to the first housing (11) so that a contact head of the pin (121) has a first position extending out of the first sealing through hole (1411) and a second position located in the first sealing through hole (1411);

-a first elastic element (142) located between the first front fixed end plate (13) and the first insulating plate (141), the first elastic element (142) being configured to provide a force for moving the first insulating plate (141) away from the first front fixed end plate (13).

2. The high-voltage plug-in connector according to claim 1, wherein the protection assembly (14) further comprises a second insulating plate (143) connected with the first insulating plate (141), the second insulating plate (143) is located at one side of the first insulating plate (141) facing the first front fixed end plate (13), a second sealing through hole (1434) in sealing fit with the pin (121) is formed in the second insulating plate (143), and the second insulating plate (143) is movably arranged relative to the first housing (11).

3. The high-voltage pluggable connector of claim 2, wherein the second insulating plate (143) is provided with a balancing groove (1433), and a balancing cavity is enclosed between the balancing groove (1433) and the wall surface of the first insulating plate (141), and the balancing cavity is configured to be capable of containing insulating oil.

4. The high voltage pluggable connector of claim 1, the pin assembly (12) further including an insulating sleeve (122), the insulating sleeve (122) being disposed about at least a portion of the periphery of the pin (121), the insulating sleeve (122) being of unitary construction.

5. The high-voltage pluggable connector according to claim 1, wherein the first housing (11) is provided with a first pressure hole (111), a deformation space is formed between the first front fixed end plate (13) and the first insulating plate (141), and the first pressure hole (111) is communicated with the deformation space.

6. The high-voltage pluggable connector according to any one of claims 1 to 5, further comprising a plug (20), the plug (20) being configured to be insertable into the first mounting cavity from a second end of the receptacle (10), the plug (20) comprising:

a second housing (21) defining a second mounting cavity;

jack assembly (22) is located in the second installation cavity, jack assembly (22) is including interior oil bag (221), insulating front cover (222) and insulating middle cover (223), the first end of insulating front cover (222) is constructed can with contact head electric connection of contact pin (121), interior oil bag (221) cover is established cover (222) before insulating with on the insulating middle cover (223), interior oil bag (221) is constructed and to be able to splendid attire insulating oil.

7. The high-voltage pluggable connector of claim 6, the plug (20) further including an outer oil pocket (24) sleeved on the inner oil pocket (221), the outer oil pocket (24) having deformability and being configured to be capable of containing insulating oil, the outer wall surface of the outer oil pocket (24) being of a wave-like or folded line type.

8. The high-voltage plug-in connector according to claim 6, wherein the insulating middle sleeve (223) is provided with a second pressure hole (2231), and the inside of the inner oil bag (221) is communicated with the inside of the insulating middle sleeve (223) through the second pressure hole (2231).

9. The high voltage pluggable connector of claim 6, the receptacle assembly (22) further including an insulative rear sleeve (226) and an electrical connector (227), the second end of the insulative front sleeve (222) being connected to the first end of the insulative rear sleeve (226), the insulative rear sleeve (226) being disposed about the outer periphery of the electrical connector (227), the insulative rear sleeve (226) being of unitary construction.

10. The high voltage pluggable connector of claim 6, the receptacle assembly (22) further including an electrical connector (227) and a second spring (225), the plug (20) further including a switch assembly (25), the switch assembly (25) including a connection terminal (251), a first end of the electrical connector (227) being connected to the second spring (225), a second end of the electrical connector (227) being electrically connected to a first end of the connection terminal (251) in a detachable manner, the second end of the connection terminal (251) being configured to be electrically connectable to a cable.