CN108923164B - Underwater wet plug connector - Google Patents

Abstract

The invention relates to an underwater wet plug connector, comprising: a male head piece: a male outer cylinder including front and rear openings, a male rear baffle fixedly sealing the rear end of the male outer cylinder, a male front baffle, a male The head sheath, the two ends are respectively abutted against the male head front baffle and the male head rear baffle, and the male head spring is pressed against the male head front baffle to move to the front end of the male head outer cylinder, and the seal passes through the male head rear baffle in turn and the male battery core parts of the male front baffle, etc.; the female head parts: including the female head outer cylinder with front and rear openings, the female head front baffle, the female head rear baffle, the female head base, and the seal installed behind the female head The female sheath on the baffle, and the female battery core parts that are sealed through the female rear baffle, female base and female front baffle in turn. Compared with the prior art, the underwater wet plug connector of the present invention can work in the range of water depth from 0 to 6000 meters, can adapt to working environments such as rivers, lakes, oceans, etc., can reach 6000VDC withstand voltage level, and has a withstand voltage level High, long creepage distance, many plug-in times and so on.

Description

An underwater wet plug connector

technical field

The invention belongs to the technical field of marine engineering and relates to an underwater wet plug connector.

Background technique

Currently known underwater wet plug connectors mostly adopt a large oil discharge method, and generally the oil continues to be discharged during the entire insertion process, which leads to a limited number of plugging and unplugging. On the other hand, the existing underwater wet plug connectors pay more attention to the insulation between the conductor and the external water body, but neglect the insulation drop between the conductors caused by the water mixed with the oil, which leads to the underwater wet plug The reliability of the connector is reduced, and this problem is more serious in the case of higher voltage. There are also some that simply use oil to discharge the water on the joint surface by opening gaps in the seal. This design can easily cause insulation degradation when the water body is trapped on the joint surface, and its reliability is also unstable.

Contents of the invention

The object of the present invention is to provide an underwater wet plug connector in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

An underwater wet plug connector, comprising:

Male head parts: including the male head outer cylinder with front and rear openings, the male head rear baffle that fixedly seals the rear end of the male head outer cylinder, the male head front that is sealed on the inner side of the front end of the male head outer cylinder and can move along the inner wall of the male head outer cylinder The baffle, the male sheath that is sealed on the male rear baffle, and the two ends respectively contact the male front baffle and the male rear baffle and move against the male front baffle to the front end of the male outer cylinder The male spring, and the male electric core parts that pass through the male rear baffle and the male front baffle in turn are sealed, and the inner front end of the male outer cylinder is also provided to limit the outward movement of the male front baffle The distance limit protrusion, between the male front baffle and the male rear baffle, there are also bellows and compensators that seal and enclose the male electric core in turn from the inside to the outside, and the male sheath , the compensator and the male head front baffle form a communication space filled with insulating oil, and the male head rear baffle is also provided with a connection bellows and the male head sheath at the part surrounded by the bellows and facing the bellows single Channel 1 leading to the conduction, there is also a channel connecting the bellows and the outer space of the male front baffle and unidirectionally conducting to the outside of the male front baffle between the male battery core and the male front baffle two;

Female head piece: including the female head outer cylinder with front and rear openings, the female head front baffle and the female head rear baffle that respectively fix and seal the front and rear ends of the female head outer cylinder, and the front and rear ends are respectively sealed against the female head front baffle and the rear of the female head The female base of the fender, the female boot sealingly mounted on the female back fender, and the female cell piece sealed through the female back fender, the female base and the female front fender in turn , between the female front baffle and the female rear baffle, a pressure compensation diaphragm surrounding the female base is arranged, and the front end of the female base and the female front baffle surround the The female battery cell is formed with a buffer cavity, and the inside of the female base is processed with an installation cavity for installing the female battery. The female battery includes a female front battery and a female rear battery. and the female springs connected to the two ends respectively, wherein, the bottom of the front cell of the female plug is slidably sealed with the installation cavity, and the head seals through the base of the female plug, the buffer cavity and the front baffle of the female plug in turn, and the female plug The battery behind the head is fixed and there is a gap between the outer surface and the inner wall of the buffer cavity. There is also a channel three in the base of the female connector that connects the rear section of the female connector cavity with the buffer cavity and conducts one-way in the direction of the buffer cavity. , the front end of the female head cavity communicates with the space enclosed by the pressure compensation diaphragm, and the rear section and the pressure compensation diaphragm form a cavity that is unidirectionally connected to the female head cavity. The female head sheath, the female head front baffle and the pressure compensation The inner space of the area surrounded by the diaphragm is filled with insulating oil, and the space between the female head sheath and the pressure compensation diaphragm is communicated.

Further, the front battery core of the female connector is a two-section integrated cylindrical structure, wherein the small diameter section is also covered with a front battery sleeve and sealed through the front end of the female connector base and the female connector front block plate, the head of the section of the small diameter is also recessed in the front cell sleeve, and forms a docking hole matching the head of the male cell part, and the section of the large diameter is located in the installation cavity and is in line with the The inner wall of the installation cavity is slidingly sealed.

Furthermore, the bottom of a section of the large-diameter front cell of the female connector is also hollowed out in the middle to form an empty groove for accommodating the female connector spring.

Further, the pressure compensating diaphragm includes a middle pressure compensating diaphragm and an outer pressure compensating diaphragm surrounding the base of the female connector at intervals in sequence, and the area between the outer pressure compensating diaphragm and the middle pressure compensating diaphragm of the rear baffle of the female connector There is a channel connecting the external pressure compensation diaphragm and the female head sheath;

The compensator includes an inner compensator and an outer compensator which enclose the bellows at intervals in sequence, and the area between the outer compensator and the inner compensator on the rear baffle of the male head is provided with a communication between the outer compensator and the male compensator. Channels for the headgear.

Furthermore, on the female front baffle and the female rear baffle, respectively, there are female outer retaining rings and female middle retaining rings oppositely arranged, and the external pressure compensation diaphragm and the middle pressure compensation diaphragm pass through the outer diaphragm respectively. The locking band and the middle diaphragm locking band are sealed and fixed on the outer side of the outer retaining ring of the female head and the middle retaining ring of the female head;

On the male front baffle and the male rear baffle, respectively, a male outer retaining ring and a male inner retaining ring are oppositely arranged, and the outer compensator and the inner compensator pass through the outer locking belt and the inner lock respectively. The tight band is sealed and locked on the outside of the male outer retaining ring and the male inner retaining ring.

Still further, the inner side of both ends of the external pressure compensation diaphragm and the middle pressure compensation diaphragm are respectively provided with inverted V-shaped protrusions, and the inverted V-shaped protrusions are respectively connected to the outer retaining ring of the female head and the middle retaining ring of the female head. The corresponding parts are anastomosed tightly.

Further, the female base includes a female front base and a female rear base that are sealed and connected by base connecting bolts, wherein the front end of the female front base is connected to the female front baffle through a support sleeve The internal retaining ring of the female connector at the middle position is sealed and connected to form the buffer cavity, and the bottom end surface of the rear base of the female connector is fixed and sealed with the rear baffle of the female connector.

Further, the male spring and the female spring are always in a compressed state, and the rigidity of the male spring is greater than that of the female spring.

Further, the front end of the male outer cylinder is also provided with a buckle, and the outer end of the buckle extends toward the center to form a tail hook, and the front end of the female outer cylinder is provided with a conical annular inverted boss;

When the male head piece is docked with the female head piece, the tail hook will block the conical annular inverted boss and prevent it from coming out.

Further, the female front baffle is equipped with a female front cell seat for the female front cell parts to pass through, and the front end of the female front cell seat protrudes from the female front baffle It is also sealed and tightly attached to the front end of the front baffle of the female connector, and flow guide grooves are distributed radially on the front end of the front cell seat of the female connector;

A male cell sheath for the male cell part to pass through is sealed and installed on the male front baffle, and the male cell sheath consists of three sections of cylinders with different diameters connected sequentially from the inside to the outside Form a one-piece structure, wherein, the smallest diameter section of the three-section cylinder is used for the sealing and penetration of the male battery cell, and matches the size of the front end of the female battery cell, and the outer peripheral surface of the middle-diameter section is in contact with the front of the male battery. The baffle seal, the section with the largest diameter is close to the outer end surface of the female front baffle, and its outer edge protrudes forward and forms a ring that can be squeezed and sealed with the protruding part of the female front battery seat on the female front baffle trough structure.

Further, the rear baffle of the male connector is provided with an oil injection hole connecting the inner space of the male connector sheath and the outside. L-shaped oil injection holes are preferably used, and the number is generally not less than two. After the oil injection is completed, the oil injection hole plug of the male connector can be used blocked.

Compared with the prior art, the present invention has the following characteristics:

(1) The underwater wet plug connector of the present invention adopts an internal isolation structure to ensure that even if an external water body is brought into the connector, it will not affect the insulation performance between the cells.

(2) The underwater wet plug connector of the present invention is controlled by an insulating oil check valve to ensure that the water body brought in will not affect the insulation drop between the battery cell and the water body.

(3) The underwater wet plug connector of the present invention has a longer creepage distance, and at the same time adopts the end surface groove structure to control the excessive discharge of insulating oil, ensuring the service life of the underwater wet plug connector, and adopts a micro bellows structure at the same time Ensure that the reduction of insulating oil does not reduce the discharge performance of insulating oil each time they are mated.

Description of drawings

Fig. 1 is the structural representation of male head part of the present invention;

Fig. 2 is a schematic structural view of a female head piece of the present invention;

Fig. 3 is a schematic diagram of the axial oil discharge structure of the female head piece of the present invention;

Fig. 4 is a connection schematic diagram of the underwater wet plug connector of the present invention;

5 is a schematic diagram of the partial structure of the underwater wet plug connector of the present invention after connection;

Instructions for marks in the figure:

1-male piece, 101-male wire, 102-male sheath, 103-wire support sleeve bolt 1, 104-wire support sleeve 1, 105-one-way valve 1, 106-male oil injection hole plug, 107-male tailgate, 108-bellows seal 1, 109-outer compensator locking band 1, 110-male rear bolt, 111-inner compensator locking band 1, 112-wire support sleeve 2 , 113-wire support sleeve bolt two, 114-male spring, 115-outer compensator, 116-inner compensator, 117-corrugated tube, 118-male outer cylinder, 119-outer compensator locking belt two, 120 -Inner compensator locking strap two, 121-male front bolt, 122-bellows seal two, 123-buckle, 124-male front baffle, 125-male cell sheath, 126-single Directional valve two, 127-male battery, 2-female piece, 201-female front battery sleeve, 202-female front battery seat, 203-female front battery seat inner seal, 204-female Front cell seat outer seal, 205-female front baffle, 206-female front cell, 207-female front screw, 208-female outer cylinder, 209-female front base inner radial seal , 210-external pressure compensation diaphragm locking belt 1, 211-middle pressure compensation diaphragm locking belt 1, 212-female front base plug 1, 213-female front cell support sleeve outer diameter seal, 214- Female front cell support sleeve, 215-female front base, 216-female front base plug 2, 217-female front cell support sleeve inner diameter seal, 218-female spring, 219-female Front base axial inner seal, 220-female front base axial outer seal, 221-female front and rear base connecting bolts, 222-female front and rear base connecting bolt seals, 223-middle pressure compensation diaphragm , 224-one-way valve three, 225-external pressure compensation diaphragm, 226-spring seat, 227-female rear base, 228-female rear base plug, 229-one-way valve four, 230-external pressure compensation Diaphragm locking strap two, 231-female rear locking bolt, 232-middle pressure compensation diaphragm locking strap two, 233-female tailgate radial plug, 234-female rear base seal, 235 -female rear baffle axial plug, 236-female rear cell cover, 237-female rear baffle, 238-female rear cell seal, 239-female rear cell, 240-female Sheath, 241-female wire, 242-diversion groove, 11-space 1, 12-space 2, 13-arrow 1, 14-arrow 2, 15-arrow 3, 16-space 3, 17-arrow 4, 18-arrow five, 19-space four, 20-space five, 21-arrow six, 22-space six, 23-arrow seven, 24-arrow eight.

Implementation

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

The present invention proposes an underwater wet plug connector, which mainly includes:

Male head piece 1: includes the male head outer cylinder 118 of front and rear openings, the male head rear baffle plate 107 fixedly sealing the rear end of the male head outer cylinder 118, the seal is arranged on the inner side of the front end of the male head outer cylinder 118 and can be moved along the male head outer cylinder 118 The male head front baffle 124 that moves on the inner wall, the male head sheath 102 that is sealed and arranged on the male head back baffle 107, and the two ends respectively abut the male head front baffle 124 and the male head rear baffle 107 and resist the male head The front baffle plate 124 moves toward the male head spring 114 at the front end of the male head outer cylinder 118, and the male head electric core piece that passes through the male head rear baffle plate 107 and the male head front baffle plate 124 successively seals. The inner side of the front end of the barrel 118 is also provided with a limit protrusion to limit the outward movement distance of the male front baffle 124, and a seal is arranged between the male front baffle 124 and the male rear baffle 107 sequentially from the inside to the outside. The bellows 117 and the compensator surrounding the male electric core part, the male sheath 102, the compensator and the male front baffle 124 form a communication space filled with insulating oil, and the male rear baffle 107 is also provided with a channel 1 that connects the bellows 117 and the male sheath 102 and leads to the bellows 117 in one direction at the part surrounded by the bellows 117 (it can be realized by setting a one-way valve 105). There is also a space between the male battery cell and the male front baffle 124 that connects the bellows 117 and the outer space of the male front baffle 124 and is unidirectionally conducted toward the outer side of the male front baffle 124 (you can set a one-way valve Two 126 ways to achieve) channel two;

Female head piece 2: including the female head outer cylinder 208 with front and rear openings, the female head front baffle plate 205 and the female head rear baffle plate 237 that respectively fix and seal the front and rear ends of the female head outer cylinder 208, and the front and rear ends are respectively sealed against the female head front baffle Plate 205 and the female base of the female tailgate 237, the female boot 240 sealingly mounted on the female tailgate 237, and in turn sealed through the female tailgate 237, the female base and the female The female battery cell of the head front baffle 205 is also arranged between the female front baffle 205 and the female rear baffle 237 with a pressure compensation diaphragm surrounding the female base, and the female base A buffer cavity is formed around the female battery cell between the front end of the front end of the female connector and the female connector front baffle 205, and an installation cavity for installing the female connector battery core is processed inside the female connector base. The core part includes a female front cell 206, a female rear cell 239, and a female spring 218 connected to the two ends respectively, wherein the bottom of the female front cell 206 is slidably sealed with the installation cavity, and the head is sealed sequentially. Through the female base, the buffer cavity and the female front baffle 205, the rear cell 239 of the female is fixed and there is a gap between the outer surface and the inner wall of the buffer cavity, and the female base is also provided with a connecting female The rear section of the cavity communicates with the buffer cavity and one-way in the direction of the buffer cavity (it can be realized by setting the one-way valve 3 224). The cavity surrounded by the pressure compensation diaphragm is unidirectionally connected to the cavity of the female head, and the inner space of the area surrounded by the female head sheath 240, the front baffle plate 205 of the female head and the pressure compensation diaphragm is filled with insulating oil, and the female head The headgear 240 is in spatial communication with the pressure compensating diaphragm.

Further, the male electric core part is composed of two parts, the male electric core 127 and the male lead wire 101 , wherein the inside of the male lead wire 101 is made of conductive metal, preferably made of pure silver. The exterior is an oil-resistant insulating layer made of polyfluoroplastics. One end of the male wire 101 is welded to the male battery 127 , and the other end is connected to the main body of the cable. The female battery cell part also includes a female wire 241 connected to the female rear battery cell 239 . The front end of the male cell 127 matches the front end of the female front cell 206; the rear end of the male cell 127 is connected to the male wire 101 by welding; the outer cylindrical surface of the male cell 127 can be sealed by hot melting A male cell sheath 125 is provided. Preferably, the male battery core 127 is made of pure copper.

Further, the male sheath 102 is in the shape of a conical truncated column shell, one end of the large mouth is thermally fused with the male rear baffle 107, and one end of the small mouth is connected with the cable main body, and the two junctions should play a sealing role to prevent fluid from passing through, preferably , the material is polyether ether ketone. Likewise, the structure and arrangement of the female boot 240 is similar to that of the male boot 102 .

In a preferred embodiment of the present invention, the female front cell 206 is a two-section integrated cylindrical structure, wherein the small diameter section is also covered with a front cell sleeve and sealed through it. The front end of the female base and the female front baffle 205, the head of the section of the small diameter is also recessed in the front cell sleeve, and forms a docking hole matching the head of the male cell part, the large diameter The first section is located in the installation cavity and slides and seals with the inner wall of the installation cavity, and the outer wall surface of the larger diameter section and the inner wall surface of the installation cavity can be sealed by gaps or the like. The material of the female front cell 206 is preferably pure copper or the like. Further, the female front cell 206 and the female front cell sleeve 201 pass through the female front baffle 205 through the female front cell seat 202 . Furthermore, the front cell sleeve 201 of the female connector is in the shape of a circular tube, and the inner cylindrical surface is thermally fused with the outer cylindrical surface of the front part of the female connector 206, and the outer cylindrical surface can be divided into the inner cylinder of the female connector front cell holder 202. The internal seal 203 of the front cell seat of the female head, and the inner cylindrical surface of the front cell support sleeve 214 of the female head form a sliding sealing fit with the inner diameter seal 217 of the front cell support sleeve of the female head, and cooperate with the front base of the female head The central aperture of 215 forms a sliding fit. Preferably, the material of the front cell sleeve 201 of the female connector is polyether ether ketone. Furthermore, the front cell holder 202 of the female connector has a three-section cylindrical structure, with a through hole in the center, and a radial guide groove 242 on the end surface with the largest diameter to discharge excess oil, and a sealing groove on the cylindrical surface of the middle section Groove, used to install the outer seal 204 of the front cell seat of the female head, so as to achieve the sealing effect of the corresponding inner through hole with the front baffle plate 205 of the female head. Corresponding threaded holes form a thread pair connection, so as to fix the female front cell holder 202 on the female front baffle 205, and the central inner hole is provided with a sealing groove near the front end surface for installing the female front cell holder The inner sealing member 203 is used to form a sliding sealing fit with the front cell cover 201 of the female connector and the front end of the male connector 1 , preferably, the material is polyether ether ketone.

Furthermore, the bottom of the large diameter section of the female front cell 206 is also hollowed out in the middle to form an empty groove for placing the female spring 218, which can save the installation space of the female spring 218, and Compression stroke can be increased. Correspondingly, the female spring 218 is preferably a compression spring with both ends ground and tightened, one end of which bears against the bottom surface of the empty groove on the front cell 206 of the female, the other end bears against the axial surface of the flange of the spring seat 226, and the end surface of the spring seat 226 It is fixed against the battery cell 239 behind the female connector, and the material is preferably 316 stainless steel. Preferably, the spring seat 226 is composed of two sections of cylinders, the thin cylinder section is used as the guide post of the female head spring 218, the thicker cylindrical axial flange is against the axial end surface of the spring seat 226, and the thicker cylindrical end surface of the spring seat 226 is in contact with the female spring. The large cylindrical end surface of the battery cell 239 behind the head is thermally fused into one body, preferably, the material is polyether ether ketone.

In a preferred embodiment of the present invention, the rear cell 239 of the female connector is a two-section cylindrical structure, the thin cylindrical end surface is welded together with the female connector wire 241 , and the thin cylindrical cylindrical surface is connected to the inner part of the rear cell sleeve 236 of the female connector. The through holes are integrated by thermal fusion process, and the thick cylindrical end surface and the thick cylindrical end surface of the spring seat 226 are integrated by thermal fusion process. Preferably, the material is polyether ether ketone. Furthermore, the rear battery core sleeve 236 of the female connector is a three-section cylindrical structure with a central through hole, and the inner hole and the outer cylindrical surface of the rear battery cell 239 of the female connector are made into one body by heat fusion process, and the diameter of the thickest section is the same as that of the female connector. The diameter of the thick cylindrical surface of the rear cell 239 is the same, and the middle section forms a sealing fit with the corresponding through hole section of the female rear baffle 237, and the thinnest section is an external thread, which is fixed with the corresponding threaded hole of the female rear baffle 237. Preferably, the material is pure silver.

In a preferred embodiment of the present invention, the pressure compensating diaphragm includes a middle pressure compensating diaphragm 223 and an outer pressure compensating diaphragm 225 surrounding the base of the female connector at intervals in sequence. The area between the external pressure compensating diaphragm 225 and the middle pressure compensating diaphragm 223 is provided with a channel connecting the external pressure compensating diaphragm 225 and the female head sheath 240; the compensator includes internal compensators that enclose the bellows 117 in sequence 116 and the outer compensator 115 , a channel connecting the outer compensator 115 and the male sheath 102 is provided on the area between the outer compensator 115 and the inner compensator 116 on the male tailgate 107 . Further, the female front baffle 205 and the female rear baffle 237 are respectively arranged opposite to the female outer retaining ring and the female middle retaining ring, the external pressure compensation diaphragm 225 and the middle pressure compensation diaphragm 223 Respectively through the outer diaphragm locking band (including the external pressure compensation diaphragm locking band 1 210 corresponding to the two ends of the diaphragm and the external pressure compensation diaphragm locking band 2 230 ) and the middle diaphragm locking band (including the middle pressure compensation band corresponding to the two ends of the diaphragm respectively). Diaphragm locking belt 1 211 and middle pressure compensation diaphragm locking belt 2 232) are sealed and fixed on the outside of the outer retaining ring of the female head and the middle retaining ring of the female head; the male front baffle 124 and the male rear baffle 107 The outer retaining ring of the male head and the inner retaining ring of the male head are respectively arranged oppositely, and the outer compensator 115 and the inner compensator 116 are respectively passed through the outer locking belt (including the outer compensator locking belt corresponding to the two ends of the outer compensator 115). 109 and outer compensator locking band 2 119) and inner locking band (including inner compensator locking band 1 111 and inner compensator locking band 2 120 corresponding to both ends of inner compensator 116) are sealed and locked outside the male head Outer side of retaining ring and male inner retaining ring. Still further, the inner sides of the external pressure compensation diaphragm 225 and the middle pressure compensation diaphragm 223 are respectively provided with inverted V-shaped protrusions, and the inverted V-shaped protrusions are respectively connected to the outer retaining ring of the female head and the middle part of the female head. The corresponding parts of the retaining ring are in close contact, which can effectively prevent the relative axial movement between the diaphragm and the retaining ring. More preferably, the axial end surface of the female rear baffle 237 is provided with a through hole between the outer retaining ring and the middle retaining ring as an oil hole, and the axial end surface of the female rear baffle 237 is installed close to the rear battery sleeve 236 of the female connector. Through holes are arranged near the holes to pass through the front and rear base connecting bolts 221 of the female head; the rear baffle plate 237 of the female head is radially provided with 3 threaded through holes for installing the radial plug 233 of the rear baffle plate of the female head. The hole passes through the oil hole vertically; the side of the female rear baffle 237 near the female sheath 240 is provided with 3 threaded through holes along the axial direction to install the axial plug 235 of the female rear baffle, and the threaded through holes Then vertically penetrate to the installation through hole of the radial plug 233 of the rear baffle of the female head; the rear baffle 237 of the female head is provided with 4 threaded holes on the side away from the sheath 240 of the female head, and the female head is locked by the locking bolt 231 at the rear of the female head. The head rear baffle 237 is installed and fixed with the female head outer cylinder 208; the female head rear baffle 237 is provided with a stepped circular hole at the position corresponding to the end surface of the inner hole of the female rear base 227, and a sealing groove is provided in the cylindrical surface of the larger hole section Groove, used to install the rear cell seal 238 of the female head and form a sealing fit with the outer cylindrical surface of the middle section of the rear cell sleeve 236 of the female head. The post forms a pair of threads for fixed fit, preferably, the material is polyether ether ketone. The compensator and retaining ring in the male piece 1 can also be arranged with the above-mentioned similar structure. The pressure compensation diaphragm and compensator can be fixed with the retaining ring and sealed with the joint surface by using a structure such as a throat hoop, and the throat hoop can be made of 316 stainless steel.

In a preferred embodiment of the present invention, the female head base includes a female head front base 215 and a female head rear base 227 that are sealed and connected by base connecting bolts, wherein the female head front base 215 The front end is sealed and connected with the inner retaining ring of the female connector arranged in the middle of the female connector front baffle 205 through the support sleeve, and forms the buffer cavity. seal. More preferably, the front base 215 of the female head is a cylinder with three sections of cylindrical holes in the center. The inner radial seal 209 of the front base, so that the cylinder surface of the largest cylindrical hole of the front base of the female head 215 forms a sealing fit with the outer cylindrical surface of the annular internal retaining ring on the front baffle plate 205 of the female head, and the front base of the female head 215 There is also a female front cell 206 support sleeve between the bottom of the largest cylindrical hole and the rear end of the annular inner retaining ring on the female front baffle 205 to improve the sealing effect. The large end face of the support sleeve is in an extrusion relationship, and a buffer cavity is formed between the front end of the support sleeve 206 of the female connector front end and the annular inner retaining ring; The cell sleeve 201 is set on the outer cylindrical surface of the front cell 206 of the female connector to form a sliding fit; Sliding fit; the front base 215 of the female head is provided with a threaded through hole on the outer cylindrical surface radially close to the end face, which is used as an oil injection hole, and the threaded hole is used to install and fix the plug 212 of the front base of the female head and the front base of the female head Plug 2 216; the front base 215 of the female head is provided with a through hole at the bottom surface of the middle through hole radially on the outer cylindrical surface, which is used to communicate with the inner space of the middle pressure compensation diaphragm 223 and the installation cavity; the front base 215 of the female head is near the middle The end surface of one side of the hole is provided with a sealing groove to install the axial inner seal of the female front base 215 and the axial outer seal of the female front base 215, so as to ensure the axial seal with the rear base 227 of the female Fitting; there are two sections of through holes, large and small, between the axial inner seal of the female front base 215 and the sealing groove of the female front base 215 axial outer seal, and the large section is used to install the one-way valve three 224 and Extend to communicate with the installation cavity, and the small section of hole extends to communicate with the buffer cavity, so that the oil can only flow from the side of the installation cavity to the buffer cavity; the end surface of the front base 215 of the female head is located on the side of the middle hole The female front base 215 is provided with three threaded holes on the inner side of the groove of the inner seal, for connecting the female front base 215 and the female rear base 227 with the help of the female front and rear base connecting bolts 221 . Preferably, the material is polyether ether ketone or the like. Further, the support sleeve of the front cell 206 of the female connector is in a two-section cylindrical structure, and a round hole is provided in the center, wherein the flange surface between the large and small diameters is squeezed axially by the small retaining ring of the female connector front baffle plate 205; There is a sealing groove on the cylindrical surface to install the outer diameter seal 213 of the front cell support sleeve of the female connector, so as to form a sealing fit with the inner cylindrical surface of the small retaining ring of the female connector front baffle 205; the inner cylindrical surface of the small diameter is provided with a sealing The groove is used to install the inner diameter seal 217 of the front cell support sleeve of the female connector, so as to form a sealing fit with the outer cylindrical surface of the front cell sleeve 201 of the female connector. Preferably, the material is polyether ether ketone.

The rear base 227 of the female head is a thick-walled circular tube type, wherein the through hole of the inner diameter is equal to the thickness of the middle through hole of the front base of the female head 215, and the two cooperate to form a whole installation cavity. The outer diameter is the same; the rear base 227 of the female head is provided with two threaded through holes in the radial direction on the circumferential surface, and one of the threaded holes is used to install the plug 228 of the rear base of the female head, and the through hole section directly penetrates the female head The inner cylindrical surface of the rear base 227, and another threaded through hole is used to install the one-way valve 229, and the through hole part communicates with the inner space of the rear base 227 of the female head and the inner space of the middle pressure compensation diaphragm 223; The corresponding position of the installation hole of the installation check valve three 224 on the 215 is provided with two sections of through holes, the large hole section is used to install the other end of the one-way valve three 224, and the small hole section is used to communicate the one-way valve three 224 and the female The installation through hole of the base plug 228 at the back of the head is that the one-way valve can be connected with the installation cavity; Install the female front base axial outer seal 220, and at the same time use the female front and rear base connecting bolts 221 to tighten the female front base 215 and the female rear base 227 on the axial end surface of the female rear baffle 237 , to ensure that the two axial joints form a sealed fit. Preferably, the material is polyether ether ketone.

In a preferred embodiment of the present invention, the male spring 114 and the female spring 218 are always in a compressed state, and the rigidity of the male spring 114 is greater than that of the female spring 218, ensuring that the male part 1 and the female When the parts 2 are connected, the internal structure of the female part 2 is first compressed and sealed.

In a preferred embodiment of the present invention, the front end of the male outer cylinder 118 is also provided with a buckle 123, and the outer end of the buckle 123 extends toward the center to form a tail hook, and the female outer cylinder The front end of 208 is provided with a conical annular inverted boss; when the male head piece 1 is docked with the female head piece 2, the tail hook will hold the conical annular inverted boss and prevent it from coming out. Furthermore, the buckle 123 is in the shape of a stepped flat strip and is composed of two steps. There is a through hole on the step plane at the end of the long step and is fixed on the outer cylindrical surface of the front part of the male outer cylinder 118 by means of the bolt 121 at the front of the male head. And the long plane section of the second step of the buckle 123 goes down to the cylindrical surface of the front part of the male head outer cylinder 118 and dug out three rectangular grooves in three equal parts in the circumferential direction, and the tail end hook of the buckle 123 is used for the buckle Live the conical annular inverted boss on the female head urceolus 208. Preferably, the buckle 123 is made of titanium material TA2. Furthermore, the outer cylinder 118 of the male head is cylindrical with two flanges, and the front flange, that is, the limit protrusion is located at the inner ring of the outer cylinder 118 of the male head near the front end surface, and is used to limit the position of the male head. The forward displacement of the front baffle 124, the inner ring and the outer cylindrical surface of the male front baffle 124 form an axial sliding fit; the rear flange of the male outer cylinder 118 protrudes from the original cylindrical surface, and the rear flange There are 3 through holes in the axial direction of the male head, which are connected and fixed with the male head rear baffle 107 through the bolts 110 at the rear of the male head; 3 threaded holes are arranged on the outer cylindrical surface of the front part of the male head outer cylinder 118, through which the male head front part The bolt 121 fixes the buckle 123 on the outer cylindrical surface thereof. The inner side of the buckle 123 at the front of the male outer cylinder 118 has a large chamfer to assist the female head piece 2 to smoothly enter the inner cylindrical surface of the male head piece 1; Three rectangular slots are used to place the inner probing part of the buckle 123 , and on this basis, another rectangular slot is dug to guide the conical annular inverted boss on the outer cylinder 208 of the female head. Preferably, the male outer cylinder 118 is made of polyether ether ketone.

In a preferred embodiment of the present invention, the male front baffle plate 124 is sealed and installed with a male battery sheath 125 for the male battery part to pass through, and the male battery sheath 125 It consists of three sections of cylinders with different diameters connected sequentially from the inside to the outside to form an integrated structure. Among them, the smallest diameter of the three sections of cylinders is used for the sealing of the male battery core to pass through, and is connected to the front end of the female battery core. Matching in size, the outer circumferential surface with a medium diameter is sealed with the male front baffle 124, the one with the largest diameter is close to the outer end surface of the female front baffle 205, and its outer edge protrudes forward and forms a Corresponding position squeezes and seals the insulating structure.

In a preferred embodiment of the present invention, the male rear baffle 107 is provided with an oil injection hole connecting the inner space of the male sheath 102 with the outside, preferably an L-shaped oil injection hole, the number of which is generally not less than two, Can adopt male head oil injection hole plug 106 to block after oiling completes. Furthermore, the male rear baffle 107 is axially provided with larger through-holes, the number of which is the same as the number of male batteries 127, and three threaded holes are provided around the holes, and the larger through-holes are supported by the wires. The small-diameter outer cylindrical surface of cover one 104 and lead support cover two 112 cooperates, and 3 threaded holes lead lead support cover one 104 and lead support cover two 112 are fixed on the male tailgate 107. Furthermore, the male rear baffle plate 107 is provided with a small through hole for communicating the oil inside the male sheath 102 and the outer compensator 115, and the hole is located between the outer compensator 115 and the inner compensator. The number is not less than 2. Furthermore, around the larger straight-through hole, the rear baffle plate 107 of the male head is provided with a stepped through hole in the axial direction, that is, channel 1, which is used to install the check valve 105, so that the oil can only flow from the male head protection. The inside of the sleeve 102 flows to the inside of the micro bellows 117; the male tailgate 107 is provided with 4 threaded holes on the end surface of the side of the micro bellows 117 to install and fix the bellows 117. Furthermore, an outer retaining ring, that is, an outer retaining ring of the male connector, is provided on the end surface of the male rear baffle plate 107 near the bellows 117, and the outer compensator 115 is fixed on its outer ring by means of the outer compensator locking belt 109. , The corresponding mating surface of the outer retaining ring is engraved with a V-shaped groove to ensure that the outer compensator 115 will not move axially. Furthermore, the male rear baffle plate 107 is located on the side of the bellows 117 inside the outer retaining ring and is provided with an inner retaining ring. The number of retaining rings is consistent with the number of the male battery cores 127. The inner compensator 116 is fixed on its outer ring, and the corresponding mating surface of the inner retaining ring is engraved with a V-shaped groove to ensure that the inner compensator 116 will not move axially. Furthermore, one end of the male rear baffle plate 107 is thermally fused with the large port of the male sheath 102 , and the other end is provided with 3 threaded holes through which the male rear bolt 110 is fixed to the rear flange of the male outer cylinder 118 . Preferably, the male tailgate 107 is made of polyether ether ketone.

Furthermore, the first wire support sleeve 104 is divided into inner and outer parts, which are respectively fixed and sealed on the male tailgate 107 by the second wire support sleeve bolt 113 and the first wire support sleeve bolt 103 .

Further, the male front baffle 124 is disc-shaped, and a circular through hole is provided in the center to be thermally fused with the male cell sheath 125; the rear side of the male front baffle 124 is axially provided with four threaded holes The bellows 117 is installed; the front side of the male front baffle 124 touches the inner flange of the front part of the male outer cylinder 118 as a stopper; the male front baffle 124 is provided with an outer retaining ring on one side of the bellows 117 , the outer compensator 115 is fixed on its outer ring by means of the outer compensator locking belt 2 119, and the corresponding matching surface of the outer retaining ring is engraved with V-shaped grooves to ensure that the outer compensator 115 will not move axially; the male rear baffle 107 The side of the micro bellows 117 is located inside the outer retaining ring, and the number of the retaining rings is consistent with the number of male cells 127. The inner compensator 116 is fixed on its outer ring by means of the inner compensator locking belt 2 120 , The corresponding mating surface of the inner retaining ring is engraved with V-shaped grooves to ensure that the outer and inner compensators 116 will not move axially. Preferably, the material of the male front bezel 124 is polyether ether ketone.

The present invention will be further described below in conjunction with the structural design of the underwater wet plug connector in the above-mentioned embodiment.

Example

An underwater wet plug connector, which includes a male piece 1 and a female piece 2, wherein,

The structure of the male piece 1 is shown in Figure 1, including the male wire 101, the male sheath 102, the wire support sleeve bolt 103, the wire support sleeve 104, the one-way valve 105, the male oil injection hole plug 106 , male rear baffle 107, bellows seal 108, outer compensator locking band 109, male rear bolt 110, inner compensator locking band 1 111, wire support sleeve 2 112, wire support sleeve bolt Two 113, male spring 114, outer compensator 115, inner compensator 116, bellows 117, male outer cylinder 118, outer compensator locking belt 2 119, inner compensator locking belt 2 120, male front Bolt 121, bellows seal 2 122, buckle 123, male front baffle 124, male cell sheath 125, check valve 2 126 and male cell 127. Wherein, the male sheath 102 and the male rear baffle 107 are bonded and connected by hot-melt method, the one-way valve 105 is connected with the male rear baffle 107 by thread, the wire support sleeve 104 is connected with the wire support sleeve 2 112 is respectively fixed on the male rear baffle plate 107 by wire support sleeve bolt one 103 and wire support sleeve bolt two 113, and the male lead wire 101 passes through the central circular hole of wire support sleeve one 104 and wire support sleeve two 112 and connects The electric core 127 is welded and connected; the male front baffle plate 124, the male electric core sheath 125, the one-way valve 2 126 and the male electric core 127 are integrated by hot melting; the male outer cylinder 118 passes through the male rear bolts 110 connects and fixes the male head rear baffle plate 107, the inner cavity forms a sliding fit with the male head front baffle plate 124, and is provided with a flange to limit the forward displacement of the male head front baffle plate 124, while the male head spring 114 stretches the front of the male head The baffle plate 124 and the male head rear baffle plate 107, the male head outer cylinder 118 are connected to the buckle 123 through the male head front bolt 121; the outer compensator locking belt one 109 and the outer compensator locking belt two 119 connect the outer compensator 115 Tighten on the outer retaining ring of the male head front baffle 124 and the male head rear baffle 107; the inner compensator locking belt 111 and the inner compensator locking belt 2 120 tighten the inner compensator 116 on the male head On the inner retaining ring of the front baffle plate 124 and the male head rear baffle plate 107; the micro bellows 117 is connected to the male head front baffle plate 124 and the male head baffle plate 124 together with the micro bellows seal part 1 108 and the micro bellows seal part 2 122 by bolts respectively. Head rear baffle plate 107 corresponding threaded holes. The space enclosed by the male sheath 102 , the outer compensator 115 and the male front baffle 124 is filled with transformer oil.

The structure of the female connector 2 is shown in Figure 2, including the female connector front cell cover 201, the female connector front cell holder 202, the female connector front cell holder inner seal 203, and the female connector front cell holder outer seal 204 , female front baffle 205, female front battery 206, female front screw 207, female outer cylinder 208, female front base inner radial seal 209, external pressure compensation diaphragm locking belt 210, middle pressure Compensation diaphragm locking belt one 211, front base plug of female connector one 212, outer diameter seal of cell support sleeve in front of female connector 213, cell support sleeve in front of female connector 214, front base of female connector 215, front of female connector Base plug 2 216, inner diameter seal of the front cell support sleeve of the female connector 217, female connector spring 218, axial inner seal of the female connector front base 219, outer axial seal of the female connector front base 220, female connector Front and rear base connecting bolts 221, female head, front and rear base connecting bolt seals 222, middle pressure compensation diaphragm 223, miniature check valve three 224, external pressure compensation diaphragm 225, spring seat 226, female rear base 227, female head Rear base plug 228, miniature one-way valve four 229, external pressure compensation diaphragm locking belt two 230, female rear locking bolt 231, middle pressure compensation diaphragm locking belt two 232, female rear baffle radial Plug 233, female rear base seal 234, female rear baffle axial plug 235, female rear cell sleeve 236, female rear baffle 237, female rear cell seal 238, female Rear cell 239 , female sheath 240 and female wire 241 . Among them, the front cell cover 201 of the female connector is hot-melt bonded with the front cell 206 of the female connector, and the front cell cover 201 of the female connector together with the inner seal 203 of the front cell seat of the female connector and the inside of the front cell seat 202 of the female connector are The hole forms a sealed sliding fit, and the front cell holder 202 of the female connector, together with the outer seal 204 of the female connector front cell holder, forms a sealed fit with the corresponding inner hole of the female connector front baffle plate 205, and is fixed by a thread pair; the spring seat 226 and the female connector The rear cell cover 236 and the rear cell 239 of the female connector are thermally fused together. The rear cell cover 236 of the female connector and the rear cell seal 238 of the female connector are connected and fixed with the rear baffle plate 237 of the female connector through a threaded pair. The core 239 is connected to the female lead wire 241 by welding; the female rear baffle 237 and the female sheath 240 are bonded together by hot melting, and the radial plug 233 of the female rear baffle is connected to the shaft of the female rear baffle. The plug 235 is fixed on the radial circumferential surface and the rear end surface of the axis of the rear baffle plate 237 of the female head through a thread pair; Installed in the outer and inner grooves of the front cell support sleeve 214 of the female connector, then the inner ring of the front cell support sleeve 214 of the female connector forms a sliding and sealing fit with the front cell sleeve 201 of the female connector, and the outer ring and the front baffle plate 205 of the female connector The inner ring of the internal retaining ring forms a sealing fit; the female front base plug 1 212 and the female front base plug 2 216 are connected and installed on the radial circumferential surface of the female front base 215 through a thread pair, and the miniature check valve One end of three 224 is plugged into the corresponding round hole at the rear of the front base of the female head 215, the inner radial seal 209 of the front base of the female head, the axial inner seal 219 of the front base of the female head are axially outwardly connected with the front base of the female head The sealing element 220 is respectively installed in the internal radial and axial inner and outer grooves of the female front base 215, the front inner hole of the female front base 215 is set on the outside of the internal retaining ring of the female front baffle 205, and the female front The cell support sleeve 214 is pressed against the end of the internal retaining ring of the front baffle plate 205 of the female head; the plug 228 of the rear base of the female head and the miniature one-way valve 229 are fixed on the radial circumferential surface of the rear base 227 of the female head through a thread pair, The rear base seal 234 of the female head is installed in the rear axial groove of the rear base 227 of the female head. 227 is fixed on the rear baffle plate 237 of the female head, and at the same time, the front base 215 of the female head is connected with the rear base 227 of the female head. The front base is axially sealed by the outer seal 220, and the other end of the miniature one-way valve three 224 is plugged into the corresponding round hole at the front of the rear base 227 of the female head; the spring 218 of the female head is placed on the front cell 206 and spring seat 226 of the female head Between; the external pressure compensation diaphragm locking belt 1 210 and the external pressure compensation diaphragm locking belt 2 230 press the external pressure compensation diaphragm 225 on the external retaining ring of the female front baffle 205 and the female rear baffle 237, The middle pressure compensation diaphragm locking belt 1 211 and the middle pressure compensation diaphragm locking belt 2 232 press the middle pressure compensation diaphragm 223 onto the middle retaining ring of the female front baffle 205 and the female rear baffle 237; The barrel 208 fixes the female front fender 205 and the female rear fender 237 through the female front screw 207 and the female rear locking bolt 231 respectively. The area enclosed by the female front baffle 205 , the external pressure compensation diaphragm 225 and the female sheath 240 is filled with transformer oil.

Figure 3 is a schematic diagram of the axial oil discharge structure of the female head of the underwater wet plug connector, which is the structure of the front face of the front cell seat 202 of the female head. The oil in the valve 2 126 can pass through smoothly to remove the water body between the front end surface of the female front cell holder 202 and the corresponding joint surface of the male cell sheath 125 .

FIG. 4 shows the position and connection relationship of each component when the underwater wet plug connector reliably establishes the electrical connection between the male wire 101 and the female wire 241 in an underwater environment.

Fig. 5 is a schematic diagram of the local structure of the connection state of the underwater wet plug connector, which shows the state and relationship of each main component in the connection state. It can be seen that the establishment of the electrical connection between the male wire 101 and the female wire 241 is actually through the electrical connection between the front battery cell 206 of the female connector and the rear battery cell 239 of the female connector, and the male battery cell 127 pushes the female connector The front cell 206 moves backward until the front cell 206 of the female connector is in contact with the rear cell 239 of the female connector. At this time, the buckle 123 and the conical flange at the front of the outer cylinder 208 of the female connector are clamped to keep the male wire 101 in place. The conduction state with the female lead wire 241.

Figure 6 is a flow diagram of insulating oil. The figure describes the flow direction of the internal insulating oil when the male piece 1 is inserted into the female piece 2 .

In this embodiment, the underwater wet plug connector of the present invention utilizes the one-way flow control of insulating oil to ensure that the insulation length is increased as much as possible. The insulation between them does not drop. The working process is divided into two stages: the insertion stage and the pulling out stage. With the aid of Figure 6, the working process is explained as follows:

Insertion stage: firstly, the first contact between the male head of the underwater wet plug connector and the female head of the underwater wet plug connector is the male battery cell 127 and the front battery cell 206 of the female head. When the head moves in the direction of arrow 9 24, because the male head spring 114 is very rigid, the male head front baffle plate 124 is stationary at first, so the male head electric core 127 pushes the female head front electric core 206 along the insertion direction ( That is, the direction of arrow 9 24) moves, at this time, due to the small gap between the outer cylindrical surface of the rear part of the front cell 206 of the female connector and the inner cylindrical surface of the front base 215 of the female connector and the inner cylindrical surface of the rear base 227 of the female connector, resulting in a space of six for insulating oil 22 (that is, the second half of the installation cavity), the pressure of the oil in the cavity increases, and then the internal insulating oil will enter along the channel three (that is, along the arrow nine 25, the arrow six 21, the arrow four 17, and the arrow three 15). In the buffer cavity (that is, space 3 16), the oil pressure inside the buffer cavity increases, which ensures that the external water body cannot pass through the outer cylindrical surface of the female front cell sleeve 201 and the inner cylindrical surface of the female front cell seat 202 The mating surface enters the buffer cavity. At the same time, the oil between the middle pressure compensation diaphragm 223 and the base of the female head (that is, space 5 20) enters the space 4 19 between the front cell 206 of the female head and the first half of the installation cavity through the hole along the direction of arrow 5 18, Prevent negative pressure from affecting the connection. When it is inserted into the subsequent stage, the front end surface of the front cell holder 202 of the female connector forms a virtual contact with the male cell sheath 125, and the front flange of the male cell sheath 125 begins to deform, and the front end of the front cell holder 202 of the female connector There is water trapped in the oil drain groove between the surface and the male cell sheath 125, and as the male piece 1 continues to move toward the insertion direction, the front end of the female outer cylinder 208 is against the male front baffle 124 , so that the front baffle plate 124 of the male head moves in the opposite direction along the insertion direction. At this time, since the bellows 117 is radially similar to a rigid body, the axial compression will inevitably cause the insulating oil to flow from the space 11 in the bellows 117 along the channel 2 (that is, along the Arrow one 13 and arrow two 14 directions) flow to the outside world, which will get rid of the water trapped on the joint surface between the front end face of the female front cell holder 202 and the male cell sheath 125, and increase the safety distance of insulation. At the same time, the large cylindrical hole at the rear of the front cell 206 of the female connector is in contact with the large cylindrical surface of the rear cell 239 of the female connector. At this time, the buckle 123 is locked with the conical flange at the front of the outer cylinder 208 of the female connector. The position maintains the conduction state between the male wire 101 and the female wire 241 .

Pull-out stage: when the male piece 1 moves in the opposite direction along the insertion direction, due to the existence of the check valve 2 126, water can be prevented from passing through and entering the space 11 in the bellows 117, because the male spring 114 is elongated The function will make the insulating oil in the space 12 between the bellows 117 and the inner compensator 116 be sucked into the space 11 in the bellows 117, which makes the amount of oil in the space 11 not decrease when it is reinserted next time . When pulling out at the same time, the female spring 218 pushes the female front cell 206 to move in the opposite direction along the arrow 8 24, and the space 5 20 goes to the space 6 22 to replenish oil along the arrow 7 23 to prevent negative pressure from reducing the female front cell The moving speed of 206 and the pressure of space 3 16 have not decreased, so that the external water body cannot enter the space 3 16 through the joint surface of the inner cylindrical surface of the outer cylindrical surface of the female front cell holder 202 of the female connector.

The above descriptions of the embodiments are for those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative effort. Therefore, the present invention is not limited to the above-mentioned embodiments. Improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should fall within the protection scope of the present invention.

Claims (8)

1. An underwater wet plug connector, characterized in that it comprises: Male head parts: including the male head outer cylinder with front and rear openings, the male head rear baffle that fixedly seals the rear end of the male head outer cylinder, the male head front that is sealed on the inner side of the front end of the male head outer cylinder and can move along the inner wall of the male head outer cylinder The baffle, the male sheath that is sealed on the male rear baffle, and the two ends respectively contact the male front baffle and the male rear baffle and move against the male front baffle to the front end of the male outer cylinder The male spring, and the male electric core parts that pass through the male rear baffle and the male front baffle in turn are sealed, and the inner front end of the male outer cylinder is also provided to limit the outward movement of the male front baffle The distance limit protrusion, between the male front baffle and the male rear baffle, there are also bellows and compensators that seal and enclose the male electric core in turn from the inside to the outside, and the male sheath , the compensator and the male head front baffle form a communication space filled with insulating oil, and the male head rear baffle is also provided with a connection bellows and the male head sheath at the part surrounded by the bellows and facing the bellows single Channel 1 leading to the conduction, there is also a channel connecting the bellows and the outer space of the male front baffle and unidirectionally conducting to the outside of the male front baffle between the male battery core and the male front baffle two; Female head piece: including the female head outer cylinder with front and rear openings, the female head front baffle and the female head rear baffle that respectively fix and seal the front and rear ends of the female head outer cylinder, and the front and rear ends are respectively sealed against the female head front baffle and the rear of the female head The female base of the fender, the female boot sealingly mounted on the female back fender, and the female cell piece sealed through the female back fender, the female base and the female front fender in turn , between the female front baffle and the female rear baffle, a pressure compensation diaphragm surrounding the female base is arranged, and the front end of the female base and the female front baffle surround the The female battery cell is formed with a buffer cavity, and the inside of the female base is processed with an installation cavity for installing the female battery. The female battery includes a female front battery and a female rear battery. and the female springs connected to the two ends respectively, wherein, the bottom of the front cell of the female plug is slidably sealed with the installation cavity, and the head seals through the base of the female plug, the buffer cavity and the front baffle of the female plug in turn, and the female plug The battery behind the head is fixed and there is a gap between the outer surface and the inner wall of the buffer cavity. There is also a channel three in the base of the female connector that connects the rear section of the female connector cavity with the buffer cavity and conducts one-way in the direction of the buffer cavity. , the front end of the female head cavity communicates with the space enclosed by the pressure compensation diaphragm, and the rear section and the pressure compensation diaphragm form a cavity that is unidirectionally connected to the female head cavity. The female head sheath, the female head front baffle and the pressure compensation The inner space of the area surrounded by the diaphragm is filled with insulating oil, and the space between the female head sheath and the pressure compensation diaphragm is connected; The front battery core of the female connector is a two-section integrated cylindrical structure, wherein the small diameter section is also covered with a front battery sleeve and sealed to pass through the front end of the female connector base and the female connector front baffle. The head of the small-diameter section is also recessed in the front cell sleeve, and forms a docking hole matching the head of the male cell part, and the large-diameter section is located in the installation cavity and is connected to the installation cavity. Sliding seal on the inner wall of the cavity; The pressure compensating diaphragm includes a middle pressure compensating diaphragm and an outer pressure compensating diaphragm surrounding the female base at intervals in sequence, and a communication is provided in the area between the outer pressure compensating diaphragm and the middle pressure compensating diaphragm of the female rear baffle. Channels for external pressure compensating diaphragms and female boots; The compensator includes an inner compensator and an outer compensator which enclose the bellows at intervals in sequence, and the area between the outer compensator and the inner compensator on the rear baffle of the male head is provided with a communication between the outer compensator and the male compensator. Channels for the headgear. 2. An underwater wet plug connector according to claim 1, characterized in that, the bottom of the large-diameter section of the female front cell is also hollowed out in the middle to form a female spring. empty slot. 3. An underwater wet-plug connector according to claim 1, characterized in that, the female front baffle and the female rear baffle are respectively arranged opposite to each other with a female outer retaining ring and a female connector. The middle retaining ring, the external pressure compensation diaphragm and the middle pressure compensation diaphragm are sealed and fixed on the outside of the outer retaining ring of the female head and the middle retaining ring of the female head through the outer diaphragm locking belt and the middle diaphragm locking belt respectively; On the male front baffle and the male rear baffle, respectively, a male outer retaining ring and a male inner retaining ring are oppositely arranged, and the outer compensator and the inner compensator pass through the outer locking belt and the inner lock respectively. The tight band is sealed and locked on the outside of the male outer retaining ring and the male inner retaining ring. 4. An underwater wet plug connector according to claim 3, characterized in that, the inner sides of both ends of the external pressure compensation diaphragm and the middle pressure compensation diaphragm are respectively provided with inverted V-shaped protrusions, and the The inverted V-shaped protrusions are in close contact with the corresponding parts of the outer retaining ring of the female connector and the middle retaining ring of the female connector. 5. The underwater wet plug connector according to claim 1, wherein the female base includes a female front base and a female rear base which are sealed and connected by base connecting bolts , wherein, the front end of the front base of the female connector is sealed and connected with the internal retaining ring of the female connector arranged in the middle of the front baffle of the female connector through the support sleeve, and forms the buffer cavity, and the bottom end surface of the rear base of the female connector is connected with the female connector The tailgate is secured and sealed. 6 . The underwater wet plug connector according to claim 1 , wherein the male spring and the female spring are always in a compressed state, and the rigidity of the male spring is greater than that of the female spring. 7. An underwater wet plug connector according to claim 1, characterized in that, the front end of the male outer cylinder is also provided with a buckle, and the outward end of the buckle extends toward the center to form a tail hook , the front end of the outer cylinder of the female head is provided with a conical annular inverted boss; When the male head piece is docked with the female head piece, the tail hook will block the conical annular inverted boss and prevent it from coming out. 8. An underwater wet plug connector according to claim 1, characterized in that, the female front baffle is equipped with a female front battery through which the female front battery core part passes. The core seat, the front end of the front cell seat of the female connector protrudes from the front baffle of the female connector and is tightly attached to the front end of the front baffle of the female connector. diversion tank; A male cell sheath for the male cell part to pass through is sealed and installed on the male front baffle, and the male cell sheath consists of three sections of cylinders with different diameters connected sequentially from the inside to the outside Form a one-piece structure, wherein, the smallest diameter section of the three-section cylinder is used for the sealing and penetration of the male battery cell, and matches the size of the front end of the female battery cell, and the outer peripheral surface of the middle-diameter section is in contact with the front of the male battery. The baffle seal, the section with the largest diameter is close to the outer end surface of the female front baffle, and its outer edge protrudes forward and forms a ring that can be squeezed and sealed with the protruding part of the female front battery seat on the female front baffle trough structure.

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