Plug, socket and mixed connector

Abstract

The invention relates to a plug, a socket and a mixed connector, the mixed connector comprises a pressure-bearing adapter socket and a non-pressure-bearing plug, the pressure-bearing adapter socket comprises a pressure-bearing disc, an adapter pressure-bearing outer cylinder, a split joint and a socket insulating part, and through the special design of the pressure-bearing adapter socket, internal oil passing is realized, and the pressure-bearing adapter socket is not in contact with the pressure-bearing disc. According to the invention, multiple functions of external pressure bearing and internal cavity wire passing are realized, simultaneous passing of pressure-bearing to non-pressure-bearing photoelectric signals and pressurized fluid is realized, simultaneous transmission of different signals and fluid in a high-temperature and high-pressure environment is realized, temperature resistance and pressure resistance of the product are ensured, field assembly of the product is realized through structural design of the non-pressure-bearing plug, and the production cost is reduced. When the pressure-bearing adapter socket is used in cooperation with the pressure-bearing adapter socket, high-efficiency signal transmission from the underground to the ground is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a plug, a socket and a mixed connector. Background Art

[0002] In oil well logging and other occasions, downhole equipment and surface equipment need to be connected for signal transmission. Since the working environment temperature and working pressure downhole are generally high, especially at the bottom of the well, it needs to withstand greater liquid pressure and temperature. Therefore, the signal transmission connection must meet special requirements such as resistance to high pressure and high temperature.

[0003] At present, the field of oil logging mainly uses electrical signals to transmit downhole data to surface data. The traditional wiring method of electrical signal transmission uses a cable from surface to downhole, which is directly connected to the downhole equipment. It is impossible to quickly disconnect the surface and downhole equipment. The subsequent signal connection and conversion are also troublesome, the maintenance cost is high, and it is impossible to quickly connect. The use of electrical connectors to transmit electrical signals can solve the problem of rapid connection and disconnection of equipment, and to a certain extent meet the transmission needs of logging. However, there are still many shortcomings: (1) In the downhole test environment, not only signal transmission is required, but also fluid needs to be transmitted to the ground for monitoring. The current high-temperature and high-pressure resistant electrical connectors are mainly subjected to external pressure and cannot realize signal transmission under the simultaneous action of internal and external fluids, that is, it is impossible to transmit fluid internally. Therefore, the current downhole fluid transmission and signal transmission still need to be separated into separate channels, requiring two sets of downhole tools, resulting in a more complicated test tool and the inability to realize the synchronous transmission of fluid and signal.

[0004] (2) As the depth of oil drilling increases, the amount of data collected also increases. Electrical signal transmission cannot meet the future demand for large data transmission. In addition, electrical signals have high loss when transmitted over long distances, and cannot be used for signal transmission on or below the well in deep application scenarios. Optical fiber transmission has the characteristics of low loss and high transmission efficiency. With the rapid development of optical fiber communication technology, optical fiber connection technology has also developed and been applied in many fields. However, most of the existing optical fiber connection technologies are used in ordinary environments. How to achieve optical fiber connection in high temperature and high pressure environments is a problem that needs to be solved. Summary of the invention

[0005] In view of the defects of the prior art, the present invention provides a plug, a socket and a hybrid connector, which can realize the simultaneous transmission of fluid and photoelectric signals under high temperature and high pressure environment.

[0006] The technical solution adopted by the present invention is: A mixed connector comprises a pressure-bearing adapter socket and a non-pressure-bearing plug; the pressure-bearing adapter socket is mainly composed of a pressure-bearing disk, a split joint and a transfer pressure-bearing outer cylinder, the split joint comprises a pressure-bearing end, an intermediate joint and a non-pressure-bearing end, the pressure-bearing end of the split joint is installed with a pressure-bearing disk, the outer sides of the pressure-bearing disk and the intermediate joint are installed with a transfer pressure-bearing outer cylinder, the pressure-bearing disk, the split joint and the transfer pressure-bearing outer cylinder are all sealedly connected, a pressure-bearing contact component is arranged on the pressure-bearing disk, a fluid channel is arranged in the pressure-bearing end of the split joint, a socket insulating component and a non-pressure-bearing contact component are installed in the cavity of the non-pressure-bearing end, a wire hole and a flow hole are arranged in the intermediate joint, and the non-pressure-bearing plug comprises a plug housing, a plug insulating component and a non-pressure-bearing contact component.

[0007] Furthermore, a wire passing cavity is formed between the adapter pressure-bearing outer cylinder and the pressure-bearing end of the split joint, and the tail cable of the pressure-bearing contact component on the pressure plate is connected to the non-pressure-bearing contact component of the non-pressure-bearing end through the wire passing cavity and the wire passing hole, and the fluid channel inside the pressure-bearing end of the split joint is connected with the flow hole, and the fluid is output to the outside of the pressure adapter socket through the fluid channel and the flow hole.

[0008] Furthermore, the outer diameter of the middle joint of the split joint is larger than the outer diameters of the pressure-bearing end and the non-pressure-bearing end, the wire hole inlet is arranged on the end face of the middle joint adjacent to the pressure-bearing end, and the wire hole outlet is connected to the cavity inside the non-pressure-bearing end; the flow hole inlet is connected to the fluid channel inside the pressure-bearing end, and the flow hole outlet is arranged on the end face of the middle joint adjacent to the non-pressure-bearing end.

[0009] Further, the wire-passing hole is an inclined hole which is connected in a straight line from the wire-passing hole inlet to the wire-passing hole outlet, and the flow-passing hole is an inclined hole which is connected in a straight line from the flow-passing hole inlet to the flow-passing hole outlet.

[0010] Furthermore, the wire-passing hole is an inclined hole which is linearly connected from the wire-passing hole inlet to the wire-passing hole outlet, and the flow-passing hole is in the form of a cross hole and a vertical hole intersecting, the vertical hole extends along the radial direction of the middle joint, the cross hole extends along the axial direction of the middle joint, the cross hole and the vertical hole are vertically connected, and the inlet end of the vertical hole is connected to the fluid channel, and the outlet end of the cross hole is connected to the flow-passing hole outlet.

[0011] Furthermore, the two ends of the adapter pressure-bearing outer cylinder are respectively connected to the pressure-bearing plate and the middle joint through circumferentially distributed screws and are sealed through a sealing unit.

[0012] Furthermore, the pressure-bearing end of the split joint is provided with an external thread 1 and a sealing unit, and the outer peripheral surface of the middle joint close to the non-pressure-bearing end is provided with an external thread 2 and a sealing unit, which are respectively used for sealing connection with user equipment.

[0013] Furthermore, the pressure-bearing end of the pressure-bearing adapter socket is provided with a pressure-bearing plug which is plugged into the pressure-bearing disk. The pressure-bearing plug is equipped with a pressure-bearing contact component which can be matched with the pressure-bearing disk. The pressure-bearing contact component on the pressure-bearing plug is connected to the optical / electrical signal wiring of the user equipment.

[0014] Furthermore, the non-pressure-bearing contact component of the non-pressure-bearing end of the split connector is installed on the socket insulating component, and the socket insulating component is fixed in the cavity of the non-pressure-bearing end by the cooperation of a retaining spring and a gasket, or is fixed in the cavity of the non-pressure-bearing end by glue or positioning claws.

[0015] Furthermore, the socket insulation component includes a socket insulator and a socket insulation pressing plate, which are an integral structure or a two-body buckled structure. When the two-body buckled structure is used, the socket insulator and the socket insulation pressing plate are buckled and connected via an uneven end surface structure.

[0016] Furthermore, the plug insulating component includes a plug insulator and a plug insulating pressure plate, and the plug insulating component is fixed in the plug housing by means of a clamping spring and a washer, or is fixed in the plug housing by means of glue or positioning claws.

[0017] Furthermore, the contact component of the non-pressure-bearing plug is installed on the plug insulator in a manner of being installed from the rear end and fixed by a positioning spring.

[0018] Furthermore, the plug insulator and the plug insulation pressing plate are two-body buckled structures, and the plug insulator and the plug insulation pressing plate are buckled and connected via an uneven end surface structure.

[0019] Furthermore, a rear straight sleeve is provided at the rear of the plug housing of the non-pressure-bearing plug, the rear straight sleeve is fixedly connected to the rear end of the plug housing, and a sealing unit is provided on the outer wall of the front end of the rear straight sleeve.

[0020] Furthermore, the non-pressure-bearing end of the split joint is a long cylindrical structure, so that the cavity of the non-pressure-bearing end can accommodate the plug shell of the non-pressure-bearing plug when the plug and socket are plugged in, and cooperate with the sealing unit outside the front end of the tail straight sleeve to achieve pressure-bearing sealing after insertion.

[0021] Furthermore, the end face of the non-pressure-bearing end of the pressure-bearing adapter socket is provided with a protrusion extending axially, and the outer peripheral surface of the tail straight sleeve is provided with a groove, and the plug and socket are guided and prevented from rotating by the cooperation of the protrusion and the groove.

[0022] Furthermore, a pressure-bearing cylinder is installed on the outside of the non-pressure-bearing end of the split joint, one end of the pressure-bearing cylinder is sealingly connected to the outer peripheral surface of the non-pressure-bearing end, and the other end extends beyond the end surface of the non-pressure-bearing end. The pressure-bearing cylinder is used to wrap around the outside of the plug shell of the non-pressure-bearing plug after the plug and socket are inserted into each other, and cooperate with the sealing unit on the rear straight sleeve to achieve pressure-bearing sealing after insertion.

[0023] Furthermore, a keyway is provided on the inner wall of the plug-in end of the non-pressure-bearing end of the split joint, and a convex key cooperating with the keyway is provided on the outer peripheral surface of the plug-in end of the plug shell of the non-pressure-bearing plug, so that plug-in guidance and anti-rotation are achieved through the cooperation between the keyway and the convex key.

[0024] Furthermore, the sealing unit of the present invention is a multi-layer sealing ring.

[0025] A socket is the pressure-bearing adapter socket in the above-mentioned mixed connector.

[0026] A plug is a non-pressure-bearing plug in the above-mentioned mixed connector.

[0027] The present invention can at least achieve the following beneficial effects: 1. The present invention realizes the multiple functions of internal pressure bearing (oil passing), external pressure bearing and internal cavity wire passing through the special design of the pressure-bearing adapter socket, realizes the simultaneous passage of photoelectric signals and pressurized fluid from pressure bearing to non-pressure bearing, solves the simultaneous transmission of different signals and fluids under high temperature and high pressure environment, and ensures the temperature and pressure resistance of the product.

[0028] 2. The pressure-bearing adapter socket realizes end pressure-bearing through the pressure-bearing plate. The pressure-bearing end contains multiple optical / electrical signal composites. The contact parts are fixed by high-temperature resistant insulating components to ensure pressure-resistant sealing performance. The external pressure-bearing relies on the adapter pressure-bearing sleeve and multi-layer sealing rubber ring. High pressure resistance in high temperature environment is achieved by using high-hardness and high-temperature resistant sealing rubber rings.

[0029] 3. The split connector of the pressure-bearing adapter socket realizes the synchronous transmission of downhole fluid and signals through the ingenious design of the flow hole and the wire hole. At the same time, it converts the optical / electrical signal to the inside at the non-pressure-bearing end, meeting the user's bundling requirements after the signal is transmitted to the non-pressure-bearing end.

[0030] 4. The non-pressure-bearing end of the pressure-bearing adapter socket realizes pressure sealing after being connected to the non-pressure-bearing plug by extending the cylinder or adding an external pressure-bearing cylinder.

[0031] 5. The non-pressure-bearing plug realizes on-site assembly of the product by adopting a plug-in split design for the insulating parts and a rear-mounted positioning spring fixing design for the contact parts, solving the problem that the customer's equipment such as pipes and cables is too large to be assembled in the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the appearance of the pressure-bearing adapter socket in Embodiment 1 of the present invention; Figure 2 This is a schematic structural diagram of a pressure-bearing adapter socket in Embodiment 1 of the present invention; Figure 3 for Figure 2 A partial schematic diagram of the Central African pressure end; Figure 4 for Figure 3 Schematic diagram of the structure of the insulating part of the middle socket (including the contact part); Figure 5 for Figure 2 Structural schematic diagram of different sections of the middle split joint; Figure 6 It is a schematic diagram of another structure of the oil hole on the split joint; Figure 7 A schematic diagram of adding a pressure-bearing plug to the pressure-bearing side of the pressure-bearing adapter socket in Example 1 of the present invention; Figure 8 This is a schematic diagram of the appearance of the non-pressure-bearing plug in Example 1 of the present invention; Fig. 9 It is a schematic cross-sectional structural diagram of the non-pressure-bearing plug in Example 1 of the present invention; Fig.10 This is a schematic diagram of the appearance of the plug and socket plug connection in Example 1 of the present invention; Fig.11 This is a schematic cross-sectional view of the plug-and-socket plug-in connection structure in Embodiment 1 of the present invention; Fig.12 This is a schematic diagram of the appearance of the plug-and-socket connection in Embodiment 2 of the present invention; Fig.13 This is a schematic diagram of the appearance of the pressure-bearing adapter socket (excluding the pressure-bearing cylinder) in Example 2 of the present invention; Fig.14 It is a cross-sectional schematic diagram of a split joint of a pressure-bearing adapter socket in Embodiment 2 of the present invention; Fig.15 This is a schematic diagram of the appearance of the non-pressure-bearing plug in Example 2 of the present invention.

[0033] Reference numerals: 1 pressure-bearing adapter socket: 11 split joint, 12 pressure-bearing plate, 13 adapter pressure-bearing outer cylinder, 14 socket insulation component, 15 pressure-bearing plug, 16 pressure-bearing cylinder; 11a pressure-bearing end, 11b middle joint, 11c non-pressure-bearing end, 111 external thread 1, 112 external thread 2, 113 fluid channel, 114 wire hole, 115 flow hole, 1151 horizontal hole, 1152 vertical hole, 1153 open face, 116 protrusion, 118 keyway, 119 cavity, 141 socket insulator, 142 socket insulation pressure plate, 143 retaining spring 1; 2 Non-pressure-bearing plug: 21 spline housing, 22 plug insulating component, 23 tail straight sleeve, 221 plug insulator, 222 plug insulating pressure plate, 223 second retaining spring, 224 washer, 225 positioning spring, 211 convex key, 231 groove; 3 pressure-bearing photoelectric contact components: 31 pressure-bearing optical contact components, 32 pressure-bearing electrical contact components; 4 non-pressure-bearing photoelectric contact components: 41 non-pressure-bearing photoelectric contact components, 42 non-pressure-bearing electrical contact components; 5 Sealing units: 51 sealing unit one, 52 sealing unit two, 53 sealing unit three, 54 sealing unit four, 55 sealing unit five, 56 sealing unit six, 57 sealing unit seven, 58 sealing unit eight; 6 screws. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with the field, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0036] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “middle”, “longitudinal”, “lateral”, “horizontal”, “inner”, “outer”, “radial”, and “circumferential” etc. cited in this specification are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as an absolute limitation on the present invention.

[0037] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] In order to enable the connector to transmit fluid internally while being under external pressure, and to achieve simultaneous transmission of optical / electrical signals under high temperature and high pressure environments, the present invention discloses a mixed connector, including a pressure-bearing adapter socket 1 and a non-pressure-bearing plug 2. The pressure-bearing adapter socket 1 achieves the transition from pressure-bearing to non-pressure-bearing through the cooperation of a split joint 11 and a pressure-bearing disk 12. At the same time, through the special design of the split joint 11, the flow hole 115 and the wire hole 114 are designed separately, thereby achieving simultaneous transmission of signals and fluids in the same structure. The pressure-bearing adapter socket 1 and the non-pressure-bearing plug 2 are guided for insertion and anti-rotation through the cooperation of a key and a groove, and pressure-bearing sealing after insertion is achieved through a sealing unit 5 and a structural design.

[0039] Example 1 like Figure 1-11 As shown in FIG. 1 , it is a schematic diagram of the structure of each part of the mixed connector in Example 1. In this embodiment, the mixed connector is an optical-electrical-liquid mixed connector. Figure 1-4 As shown, the pressure-bearing adapter socket 1 includes a pressure-bearing plate 12, a split joint 11, a pressure-bearing adapter outer cylinder 13, a sealing unit 5, a socket insulating component 14, etc. The pressure-bearing adapter socket 1 includes two parts, namely, a pressure-bearing part and a non-pressure-bearing part. The pressure-bearing plate 12 is installed at the pressure-bearing end 11a of the split joint 11, and a pressure-bearing photoelectric contact component 3 is sealed and installed on the pressure-bearing plate 12 to realize end-face pressure bearing. The pressure-bearing adapter outer cylinder 13 is installed outside the pressure-bearing plate 12 and the pressure-bearing end 11a of the split joint 11 to realize lateral pressure bearing (radial pressure bearing on the outer peripheral surface). The pressure-bearing plate 12, the split joint 11, and the pressure-bearing adapter outer cylinder 13 are sealedly connected in pairs through multiple sealing units 5. The socket insulating component 14 is installed in the cavity of the non-pressure-bearing end 11c of the split joint 11, and a non-pressure-bearing photoelectric contact component 4 is installed on the socket insulating component 14, which is used to connect with the non-pressure-bearing plug 2 to realize the transmission of photoelectric signals.

[0040] like Figure 2 and 5 As shown (where Figure 2 middle, Figure 2 (b) is a schematic diagram of the cross-sectional structure of the pressure-bearing adapter socket. Figure 2 (a) and Figure 2 (c) are Figure 2 (b) Right and left views, Figure 5 middle, Figure 5 (a) and Figure 5(b) are schematic diagrams of the structure of the split joint at different cross-sections respectively), the split joint 11 is an axial structure that is thick in the middle and thin at both ends, and from left to right (according to the direction of the figure) are the pressure-bearing end 11a (i.e., the end of the split joint 11 located on the pressure-bearing side), the middle joint 11b and the non-pressure-bearing end 11c, the middle joint 11b is connected between the pressure-bearing end 11a and the non-pressure-bearing end 11c, and the outer diameter of the middle joint 11b is larger than the outer diameters of the pressure-bearing end 11a and the non-pressure-bearing end 11c. An external thread 111 and mounting grooves of multiple sealing units 5 are arranged on the outer peripheral surface of the pressure-bearing end 11a of the split joint 11, and sealing units 1 51 and 2 52 are respectively arranged in the mounting grooves. The left and right outer peripheral surfaces of the intermediate joint 11b are respectively provided with mounting grooves of the sealing unit 5 for installing sealing units 3 53 and 4 54. An external thread 2 112 is also arranged on the right outer peripheral surface. The external thread 111 and the sealing unit 1 51 on the left side of the pressure-bearing end 11a of the split joint 11 are used to achieve a sealed connection with the downhole oil pipe. The external thread 2 112 and the sealing unit 4 54 on the intermediate joint 11b of the split joint 11 are used to achieve a sealed connection with the user equipment on the well. The external thread 111 and the external thread 2 112 are preferably trapezoidal threads with good load-bearing capacity.

[0041] The pressure-bearing end 11a of the split joint 11 is a tubular structure, and a fluid channel 113 is axially arranged inside. The non-pressure-bearing end 11c of the split joint 11 is a cylindrical structure. The intermediate joint 11b is provided with a flow hole 115 and a wire hole 114 separated from each other. The inlet of the flow hole 115 is connected with the fluid channel 113 of the pressure-bearing end 11a, and the outlet of the flow hole 115 is arranged on the end face of the intermediate joint 11b close to the non-pressure-bearing end 11c, which is used to guide the fluid to the outside of the pressure-bearing adapter socket 1; the inlet of the wire hole 114 is arranged on the end face of the intermediate joint 11b close to the pressure-bearing end 11a, and the outlet of the wire hole 114 is connected to the cavity of the non-pressure-bearing end 11c, and the socket insulating component 14 and the non-pressure-bearing photoelectric contact component 4 are installed in the cavity of the non-pressure-bearing end 11c of the split joint 11.

[0042] The flow holes 115 and the wire holes 114 on the split joint 11 must ensure that their respective inlets and outlets are connected to the corresponding cavities. The flow holes 115 and the wire holes 114 are staggered and cannot intersect with each other. There is no specific limit on the number of flow holes 115 and the wire holes 114. Multiple flow holes 115 and wire holes 114 can be set, and the number of the two can be equal or unequal; the flow holes 115 and the wire holes 114 are respectively set in different sector-shaped partitions of the middle joint 11b, and the two can be arranged alternately in the circumferential direction in the form of flow holes, wire holes, flow holes, wire holes..., staggered and not interfering with each other. In this embodiment, there are four flow holes 115 and four wire holes 114, respectively, which are alternately set in different sector-shaped partitions of the middle joint 11b.

[0043] Usually, such as Figure 5 As shown, the flow holes 115 and the wire holes 114 are both inclined holes that are linearly connected from their respective inlets to their respective outlets, and both are dispersed in different fan-shaped areas of the middle joint 11b, but the forms of the flow holes 115 and the wire holes 114 are not limited thereto.

[0044] like Figure 6 As shown, the flow hole 115 can also be designed as a cross-shaped hole 1151 and a vertical hole 1152, wherein the vertical hole 1152 extends along the radial direction of the intermediate joint 11b and is connected to the fluid channel 113 of the pressure-bearing end 11a, and the horizontal hole 1151 extends along the axial direction (a direction parallel to the axis of the split joint 11), and the left end of the horizontal hole 1151 is vertically cross-connected with the vertical hole 1152, and the outlet of the horizontal hole 1151 is located on the end face of the intermediate joint 11b adjacent to the non-pressure-bearing side. The flow hole 115 with this structure can also achieve oil flow and is easy to process. When processing the vertical hole 1152, the hole is drilled radially inward from the outer peripheral surface of the middle joint 11b. When processing the transverse hole 1151, the hole is drilled axially inward from the non-pressure-bearing side end surface of the middle joint 11b. However, this type of flow hole 115 will form an open surface 1153 on the pressure-bearing surface of the split joint 11 when processing the vertical hole 1152. When the product is actually used, the open surface 1153 needs to be processed twice and sealed by welding or adding a sealing plug. Compared with the method of using inclined holes, there may be a risk of pressure-bearing seal failure.

[0045] like Figure 1-2 As shown, a pressure-bearing optoelectronic contact component 3 is sealed on the end face of the pressure plate 12, and the pressure-bearing optoelectronic contact component 3 includes a single-core / multi-core pressure-bearing electrical contact component 32 and a single-core / multi-core pressure-bearing optical contact component 31, wherein the single-core / multi-core pressure-bearing electrical contact 32 is arranged on the pressure plate 12 by mold injection molding and rubber ring matching or glass sintering, so as to realize the product's high temperature and high pressure resistance function, wherein the single-core / multi-core pressure-bearing optical contact 31 is arranged on the pressure plate 12 by glue pouring or glass sintering; a through hole is arranged in the middle of the pressure plate 12, and the pressure plate 12 is sleeved on the pressure-bearing end 11a of the split joint 11 through the through hole, and a sealed connection between the two is realized by a sealing unit 2 52 arranged on the pressure-bearing end 11a of the split joint 11; a sealing unit installation groove is arranged on the outer peripheral surface of the pressure plate 12, and a sealing unit 55 and a sealing unit 6 56 are respectively installed.

[0046] The adapter pressure-bearing outer cylinder 13 is installed on the outside of the pressure-bearing plate 12 and the intermediate joint 11b, and the adapter pressure-bearing outer cylinder 13 and the pressure-bearing plate 12 are sealed by a sealing unit six 56, and the adapter pressure-bearing outer cylinder 13 and the intermediate joint 11b are sealed by a sealing unit three 53. The two ends of the adapter pressure-bearing outer cylinder 13 are respectively fixed to the outer circumferential surfaces of the pressure-bearing plate 12 and the intermediate joint 11b by screws 6 or other means, so as to realize the lateral pressure-bearing of the pressure-bearing adapter socket 1; a wire passing cavity is formed between the adapter pressure-bearing outer cylinder 13 and the pressure-bearing end 11a of the split joint 11, which is used to reserve space for the retreat and transfer of the tail cable of the contact component on the pressure plate 12.

[0047] The sealing units 5 (including the above-mentioned sealing units 1 to 6) used on the pressure-bearing adapter socket 1 are all in the form of multi-layer sealing rings, which are high-hardness and high-temperature resistant sealing rubber rings to achieve high pressure resistance in high-temperature environments.

[0048] like Figure 2-3 As shown, a socket insulating component 14 is installed in the inner cavity of the non-pressure-bearing end 11c of the split joint 11, and the socket insulating component 14 is used to fix and assemble the non-pressure-bearing optoelectronic contact component 4; the non-pressure-bearing optoelectronic contact component 4 includes a single-core / multi-core optical contact component 41 and a single-core / multi-core electrical contact component 42, and the socket insulating component 14 is fixed in the split joint 11 by a retaining spring 143 and a gasket, or can also be fixed by glue or claws; the non-pressure-bearing end 11c of the split joint 11 and the socket insulating component 14 realize an anti-rotation function by the cooperation of a key and a groove; after the socket insulating component 14 is assembled into the inner cavity of the non-pressure-bearing end 11c of the split joint 11, a certain cavity 119 needs to be reserved between the socket insulating component 14 and the intermediate joint 11b to ensure the bending and retreat space of the optical fiber.

[0049] like Figure 3-4 As shown (where Figure 4 (a) and Figure 4 (b) are the outer shape and cross-sectional view of the socket insulation component, respectively), the socket insulation component 14 includes a socket insulation pressing plate 142 and a socket insulator 141, both of which can be designed as a two-body buckle structure or an integrated structure. When the socket insulator 141 and the socket insulation pressing plate 142 are a two-body buckle structure ( Figure 3-4As shown in the figure, a two-body snap-fit ​​structure is formed at the mounting hole position of the electrical contact component on the end face of the socket insulator 141, and a pit is formed at the mounting hole position of the electrical contact component on the end face of the socket insulating pressure plate 142. The two are snapped together through the cooperation of the concave and convex structures. This cooperation method can increase the creepage distance between the electrical contacts and between the electrical contacts and the outer shell, thereby improving the product's voltage resistance index and high current carrying capacity within a small outer diameter size range; when the socket insulator 141 and the socket insulating pressure plate 142 are designed as an integrated structure, it is necessary to increase the outer dimensions of the socket insulator 141 accordingly to increase the creepage distance and improve the voltage resistance.

[0050] In this embodiment 1, the non-pressure-bearing end 11c of the split joint 11 is designed as a long cylindrical structure. After the socket insulating component 14 is installed, a certain length is reserved on the side of the plug-in end connected to the non-pressure-bearing plug 2 for accommodating the non-pressure-bearing plug when the head seat is plugged in and realizing the pressure-bearing seal after plugging in. That is, the cylinder of the non-pressure-bearing end 11c of the split joint 11 must be long enough to ensure that after plugging in, the plug-in interface and the shell part of the non-pressure-bearing plug 2 are covered by the cylinder of the non-pressure-bearing end 11c. At this time, the end face of the non-pressure-bearing end 11c of the split joint 11 is a non-flush structure, and is provided with a plurality of protrusions 116 extending axially.

[0051] The pressure-bearing adapter socket 1 realizes the pressure-bearing design through the mutual cooperation of the split joint 11, the pressure-bearing plate 12, and the adapter pressure-bearing outer cylinder 13. The design of the flow hole 115 and the wire hole 114 on the split joint 11 realizes the passage of fluid and photoelectric signals. When in use, the bottom hole electrical signal on the pressure-bearing side is fixed to the single-core and multi-core pressure-bearing electrical contact component 32 on the pressure-bearing plate 12 by welding or crimping, and the optical signal at the bottom hole is connected to the single-core / multi-core optical contact component 31 (optical connector) on the pressure plate 12 by an active connector or direct optical fiber fusion, so as to realize the transmission of optical signals; the downhole oil pipeline is directly connected to the split joint 11. The pressure-bearing end 11a of the connector 11 is connected to realize the flow of pressurized fluid at the bottom of the well. The design of the high-hardness sealing ring and the shell design realize the high temperature and high pressure resistance of the product. At the same time, the oil pipe and the split connector 11 are connected by the setting of the trapezoidal thread, which realizes the load-bearing of the components on the downhole equipment; the photoelectric signal on the pressure-bearing side is connected through the wire through the internal cavity of the split connector 11 and the photoelectric mixed contact component on the non-pressure-bearing side, realizing the interconnection of the entire signal link; the downhole fluid passes through the internal cavity of the split connector 11 to realize the passage of the fluid from the inside of the split connector 11 to the outside of the non-pressure-bearing side split connector 11, and the functions of the two parts do not interfere with each other.

[0052] In order to facilitate the signal connection between the pressure-bearing adapter socket 1 and the downhole equipment, as a further optimization of the pressure-bearing adapter socket 1, as Figure 7As shown, the pressure-bearing side of the pressure-bearing adapter socket 1 can be designed as a head seat plug-in structure according to the needs, that is, the pressure-bearing disk 12 is designed as a two-body plug-in structure. On the basis of the pressure-bearing adapter socket 1 described in the above embodiment, a pressure-bearing plug 15 used in conjunction with the pressure-bearing disk 12 is added to the pressure-bearing side. The structure of the pressure-bearing plug 15 is similar to that of the pressure-bearing disk 12. The pressure-bearing plug 15 is provided with a pressure-bearing photoelectric contact component 3, and an oil pipe channel is left in the middle. The pressure-bearing plug 15 and the pressure-bearing photoelectric contact component 3 on the pressure-bearing disk 12 cooperate with each other (in the form of a pin and a socket). For example, the pressure-bearing plug 15 is a jack assembly, and the pressure disk 12 is a pin assembly. The pressure-bearing photoelectric contact component 3 on the pressure-bearing plug 15 is connected to the photoelectric signal of the downhole equipment. When in use, the pressure-bearing plug 15 and the pressure disk 12 of the pressure adapter socket 1 are directly plugged together to realize the connection between the downhole photoelectric signal and the pressure adapter socket 1. The downhole oil pipe passes through the oil pipe channel on the pressure plug 15 and is connected to the pressure end 11a of the split joint 11. This structure can meet the function of quickly connecting or disconnecting the pressure side and the downhole equipment. The photoelectric part does not need to be wired on site, and can be directly plugged together when in use.

[0053] like Figure 8-9 As shown ( Figure 8 (I) is a left view of the non-pressure-bearing plug), the non-pressure-bearing plug 2 comprises a spline shell 21, a plug insulating component 22, and a non-pressure-bearing photoelectric contact component 4, wherein the plug insulating component 22 is arranged in the spline shell 21, with the plug-in end of the non-pressure-bearing plug 2 and the pressure-bearing adapter socket 1 as the front end, the plug insulating component 22 is front-installed into the spline shell 21 and fixed inside the spline shell 21 by a second retaining ring 223 and a gasket 224, or the plug insulating component 22 can also be fixed in the spline shell 21 by means of adhesive, positioning claws, etc.; the non-pressure-bearing photoelectric contact component 4 comprises a single-core / multi-core electrical contact 42 and a single-core / multi-core optical contact 41; the non-pressure-bearing photoelectric contact component 4 is installed in the plug insulating component 22 in a post-installed manner, and is matched and fixed with the plug insulating component 22 by a positioning spring 225; the spline shell 21 is also provided with a plurality of key positions and fixing grooves to realize the axial positioning and anti-rotation of the plug insulating component 22.

[0054] The plug insulating component 22 includes a plug insulating pressure plate 222 and a plug insulator 221. The plug insulating pressure plate 222 and the plug insulator 221 are designed to be plug-in (i.e., a two-body snap-fit ​​structure, snap-fitted and connected via a concave-convex structure on the end face, and the implementation method is similar to the above-mentioned socket insulator 141 and socket insulating pressure plate 142). By designing the plug insulating pressure plate 222 and the plug insulator 221 as a snap-fit ​​split structure, the creepage distance of the entire product is increased, thereby achieving a high withstand voltage index of the product.

[0055] The non-pressure-bearing plug 2 also includes a tail straight sleeve 23, which is used to provide a fiber fusion space for the non-pressure-bearing plug 2 when wiring and a length for welding with the steel pipe cable at the customer. The tail straight sleeve 23 is installed at the tail of the spline shell 21. The tail straight sleeve 23 is provided with a plurality of slots and a plurality of keys on the spline shell 21 for matching and orientation, and is fixedly connected to the spline shell 21 by bonding. The tail straight sleeve 23 can also be fixed to the tail of the spline shell 21 by threaded connection, screw connection, etc. A sealing unit 757 is installed on the outer wall of the front end of the tail straight sleeve 23, and the sealing unit 757 is also composed of multiple layers of high-hardness sealing rubber rings. A groove 231 is provided on the outside of the front end of the tail straight sleeve 23, which is used to cooperate with the protrusion 116 on the non-pressure-bearing end 11c of the pressure-bearing adapter socket 1 to achieve plug-in guidance and anti-rotation.

[0056] When the non-pressure-bearing plug 2 is in use, an on-site wiring design is carried out. After the internal electrical contacts, optical contacts and cables are crimped / welded and fused on-site, they are fixed to the plug insulator 221 by means of a positioning spring. Then, the spline shell 21 is bonded and fixed to the tail straight sleeve 23 by key position cooperation to form a plug component. Finally, the entire plug component is welded to the user's pipe and cable to form a cable assembly.

[0057] In this embodiment, the non-pressure-bearing optoelectronic contact component 4 on the non-pressure-bearing plug 2 is an optical / electrical jack assembly, and the non-pressure-bearing optoelectronic contact component 4 on the non-pressure-bearing end 11c of the pressure-bearing adapter socket 1 is an optical / electrical pin assembly. In actual use, a pin assembly can also be set on the non-pressure-bearing plug 2, and a jack assembly can be set on the non-pressure-bearing end 11c of the pressure-bearing adapter socket 1; or, a mixed pin / jack assembly can be set on the non-pressure-bearing plug 2, and a mixed jack / pin assembly can be correspondingly set on the non-pressure-bearing end 11c of the pressure-bearing adapter socket 1.

[0058] like Figure 10-11The figure is a schematic diagram of the plug-in connection state of the pressure-bearing adapter socket 1 and the non-pressure-bearing plug 2. When the mixed connector is in use, the pressure-bearing side of the pressure-bearing adapter socket 1 is connected to the downhole photoelectric signal through on-site wiring or head seat plug-in form (the form of the pressure-bearing plug 15 and the pressure-bearing disk 12 matching), the downhole oil pipe is sealed and connected to the pressure-bearing end 11a, and the non-pressure-bearing side can be connected to the user's uphole equipment for fluid transmission. The non-pressure-bearing plug 2 is wired on-site. After the non-pressure-bearing plug 2 and the pressure-bearing adapter socket 1 are wired separately, The non-pressure-bearing end 11c of the pressure-bearing adapter socket 1 is connected to the non-pressure-bearing plug 2. When plugged in, the plug-in guidance and anti-rotation are achieved through the cooperation of the protrusion 116 and the groove 231. After the two are plugged in, the spline shell 21 of the non-pressure-bearing plug 2 and the front end of the tail straight sleeve 23 are both located in the cylinder body of the non-pressure-bearing end 11c of the split joint 11. At the same time, the cylinder body of the non-pressure-bearing end 11c of the split joint 11 and the sealing unit 757 at the front end of the tail straight sleeve 23 cooperate to achieve sealing, thereby achieving pressure-bearing sealing after plugging in.

[0059] Since the tail cable of the pressure-bearing photoelectric contact component 3 on the pressure-bearing disk 12 is connected to the non-pressure-bearing photoelectric contact component 4 on the socket insulating component 14 through the wire cavity and the wire hole 114, the pressure-bearing side of the pressure-bearing adapter socket 1 is connected to the photoelectric signal of the downhole customer equipment through on-site wiring or head socket plug-in, so that the photoelectric signal can pass from the pressure-bearing end 11a to the non-pressure-bearing end 11c; after the plug and socket are plugged in, the photoelectric signal is transmitted from the downhole to the surface through the cooperation of the contact components; the pressure-bearing side of the pressure-bearing adapter socket 1 is sealed and connected to the downhole oil pipe, and the end of the intermediate joint 11b close to the non-pressure side is connected to the surface equipment, and the oil fluid in the well enters the fluid channel 113 in the pressure-bearing end 11a and is discharged to the outside of the socket through the flow hole 115 on the intermediate joint 11b, so as to realize the transmission of the fluid from the downhole to the surface, thereby realizing the synchronous transmission of the photoelectric signals and fluids between the downhole and the surface.

[0060] Example 2 like Figure 12-15 As shown, another implementation form of the mixed connector is provided in this embodiment 2: Different from the above-mentioned embodiment 1, in this embodiment, the length of the cylinder body of the non-pressure-bearing end 11c of the split joint 11 of the pressure-bearing adapter socket 1 is shortened, and at the same time, the pressure-bearing cylinder 16 is connected to the outside thereof, that is, the length of the non-pressure-bearing end 11c of the split joint 11 only needs to meet the installation requirements of the socket insulation component 14 and the non-pressure-bearing optoelectronic contact component 4, as shown in FIG. Figure 13-14, there is no need to reserve the length of the spline housing 21 for accommodating the non-pressure-bearing plug 3, and a pressure-bearing cylinder 16 is added to the outside of the non-pressure-bearing end 11c. The pressure-bearing cylinder 16 plays the role of accommodating and covering the non-pressure-bearing plug 2. The pressure-bearing cylinder 16 is fixed to the outside of the non-pressure-bearing end 11c by means of screws 6 or the like, and is sealed with the contact surface of the split joint 11 by a sealing unit 858 (multi-layer high-hardness sealing ring) arranged on the outside of the non-pressure-bearing end 11c. The pressure-bearing cylinder 16 extends beyond the end face of the non-pressure-bearing end 11c. Since the diameter of the external pressure-bearing cylinder 16 is larger than the diameter of the non-pressure-bearing end 11c, the dimensions of the spline housing 21 of the non-pressure-bearing plug 2 and the front end of the tail straight sleeve 23 need to be increased accordingly to cooperate with the pressure-bearing cylinder 16, and the dimensions of the rear end of the tail straight sleeve 23 can remain unchanged, such as Fig.15 At the same time, the anti-rotation structure of the plug and socket has changed. In this embodiment, a key groove 118 is provided on the inner wall of the non-pressure-bearing end 11c of the split joint 11 of the pressure-bearing adapter socket 1, and a convex key 211 is provided on the front end of the spline housing 21 of the non-pressure-bearing plug 2. The anti-rotation is achieved by the cooperation of the key groove 118 and the convex key 211; other parts not mentioned refer to Example 1.

[0061] In this embodiment 2, when the head seats of the optical-electrical-liquid hybrid connector are plugged in, the keyway 118 and the convex key 211 at the plug-in end cooperate to achieve guidance and anti-rotation. When the plug-in is in place, the pressure-bearing cylinder 16 installed on the split joint 11 covers the spline housing 21 of the non-pressure-bearing plug 2 and the front end of the tail straight sleeve 23, and cooperates with the sealing unit 757 on the outer wall of the front end of the tail straight sleeve 23 to achieve sealing, thereby achieving pressure after plugging in. The appearance of the plugged in state is shown in the figure. Fig.12 shown.

[0062] In this embodiment 2, the non-pressure-bearing end 11c of the split joint 11 is easy to process due to its shortened length, but the addition of the pressure-bearing cylinder 16 will cause the overall outer dimensions of the plug-in part to become larger. Those skilled in the art can select a suitable implementation form according to the characteristics of embodiments 1 and 2 and in combination with the actual situation when using it.

[0063] Embodiment of the socket: In this embodiment, the socket is a pressure-bearing adapter socket in any embodiment of the above optical-electrical-liquid hybrid connector, and will not be described repeatedly.

[0064] Embodiment of the plug: In this embodiment, the plug is a non-pressure-bearing plug in any embodiment of the above optical-electrical-liquid hybrid connector, and will not be described again.

[0065] In the above embodiment, the contact components in the mixed connector are optoelectronic hybrid contact components, that is, the mixed connector is explained by taking the optoelectronic hybrid as an example. In actual use, technical personnel in this field can freely choose the number and type of contact components in the connector according to the type of signal to be transmitted, and can choose all-electric contact components, all-optical contact components or optoelectronic hybrid contact components.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mixed connector, characterized in that: The invention comprises a pressure-bearing adapter socket (1) and a non-pressure-bearing plug (2); the pressure-bearing adapter socket (1) mainly comprises a pressure-bearing plate (12), a split joint (11) and a pressure-bearing adapter outer cylinder (13); the split joint (11) comprises a pressure-bearing end (11a), an intermediate joint (11b) and a non-pressure-bearing end (11c); the pressure-bearing plate (12) is installed on the pressure-bearing end (11a) of the split joint (11); the pressure-bearing plate (12) and the intermediate joint (11b) are provided with a pressure-bearing adapter outer cylinder (13); and the pressure-bearing plate (12), the split joint (11) and the pressure-bearing adapter outer cylinder (13) are provided between the pressure-bearing plate (12), the split joint (11) and the pressure-bearing adapter outer cylinder (13). Sealed connection, the pressure plate (12) is provided with a pressure-bearing contact component, the pressure-bearing end (11a) of the split joint (11) is provided with a fluid channel (113), the cavity of the non-pressure-bearing end (11c) is provided with a socket insulation component (14) and a non-pressure-bearing contact component, the intermediate joint (11b) is provided with a wire hole (114) and a flow hole (115), the non-pressure-bearing plug (2) comprises a plug housing (21), a plug insulation component (22) and a non-pressure-bearing contact component, and the non-pressure-bearing end (11c) of the pressure-bearing adapter socket (1) is plug-connected with the non-pressure-bearing plug (2).

2. A hybrid connector according to claim 1, characterized in that: A wire-passing cavity is formed between the pressure-bearing outer cylinder (13) of the adapter and the pressure-bearing end (11a) of the split joint (11); the tail cable of the pressure-bearing contact component on the pressure-bearing plate (12) is connected to the non-pressure-bearing contact component of the non-pressure-bearing end (11c) via the wire-passing cavity and the wire-passing hole (114); the fluid channel (113) inside the pressure-bearing end (11a) of the split joint (11) is connected to the flow hole (115); and the fluid is output to the outside of the pressure-bearing adapter socket (1) via the fluid channel (113) and the flow hole (115).

3. A hybrid connector according to claim 2, characterized in that: The outer diameter of the middle joint (11b) of the split joint (11) is greater than the outer diameters of the pressure-bearing end (11a) and the non-pressure-bearing end (11c); the inlet of the wire hole (114) is arranged on the end surface of the middle joint (11b) adjacent to the pressure-bearing end (11a); the outlet of the wire hole (114) is connected to the cavity inside the non-pressure-bearing end (11c); the inlet of the flow hole (115) is connected to the fluid channel (113) inside the pressure-bearing end (11a); the outlet of the flow hole (115) is arranged on the end surface of the middle joint (11b) adjacent to the non-pressure-bearing end (11c).

4. A hybrid connector according to claim 3, characterized in that: The wire-passing hole (114) is an inclined hole that is linearly connected from the inlet of the wire-passing hole (114) to the outlet of the wire-passing hole (114), and the flow-through hole (115) is an inclined hole that is linearly connected from the inlet of the flow-through hole (115) to the outlet of the flow-through hole (115).

5. The hybrid connector according to claim 3, characterized in that: The wire-passing hole (114) is an inclined hole that is linearly connected from the inlet of the wire-passing hole (114) to the outlet of the wire-passing hole (114); the flow-passing hole (115) is in the form of a cross-shaped hole (1151) and a vertical hole (1152); the vertical hole (1152) extends along the radial direction of the middle joint (11b); the horizontal hole (1151) extends along the axial direction of the middle joint (11b); the horizontal hole (1151) and the vertical hole (1152) are vertically connected; the inlet end of the vertical hole (1152) is connected to the fluid channel (113); and the outlet end of the horizontal hole (1151) is connected to the outlet of the flow-passing hole (115).

6. The hybrid connector according to claim 1, characterized in that: The two ends of the transition pressure-bearing outer cylinder (13) are respectively connected to the pressure-bearing plate (12) and the middle joint (11b) through circumferentially distributed screws (6), and sealing is achieved through a sealing unit (5).

7. A hybrid connector according to claim 6, characterized in that: The pressure-bearing end (11a) of the split joint (11) is provided with an external thread 1 (111) and a sealing unit (5), and the outer peripheral surface of the intermediate joint (11b) close to the non-pressure-bearing end (11c) is provided with an external thread 2 (112) and a sealing unit (5), which are respectively used for sealing connection with user equipment.

8. The hybrid connector according to claim 1, characterized in that: The pressure-bearing end (11a) of the pressure-bearing adapter socket (1) is provided with a pressure-bearing plug (15) pluggably connected to the pressure-bearing disk (12); the pressure-bearing plug (15) is provided with a pressure-bearing contact component and is capable of being matched and connected to the pressure-bearing disk (12); the pressure-bearing contact component on the pressure-bearing plug (15) is connected to the optical / electrical signal wiring of the user equipment.

9. The hybrid connector according to claim 1, characterized in that: The non-pressure-bearing contact component of the non-pressure-bearing end (11c) of the split joint (11) is mounted on the socket insulating component (14), and the socket insulating component (14) is fixed in the cavity of the non-pressure-bearing end (11c) by the cooperation of a retaining spring and a washer, or is fixed in the cavity of the non-pressure-bearing end (11c) by means of glue or positioning claws.

10. A hybrid connector according to claim 9, characterized in that: The socket insulating component (14) comprises a socket insulator (141) and a socket insulating pressure plate (142), which are an integral structure or a two-body buckled structure. In the case of the two-body buckled structure, the socket insulator (141) and the socket insulating pressure plate (142) are buckled and connected via an uneven end surface structure.

11. The hybrid connector according to claim 1, characterized in that: The plug insulating component (22) comprises a plug insulator (221) and a plug insulating pressure plate (222); the plug insulating component (22) is fixed in the plug housing (21) by means of a retaining spring and a washer, or is fixed in the plug housing (21) by means of adhesive or positioning claws.

12. The hybrid connector according to claim 11, characterized in that: The contact part of the non-pressure-bearing plug (2) is installed on the plug insulator (221) in a manner of being installed from the rear end and is fixed by a positioning spring (225).

13. The hybrid connector according to claim 11, characterized in that: The plug insulator (221) and the plug insulating pressing plate (222) are two-body buckled structures, and the plug insulator (221) and the plug insulating pressing plate (222) are buckled and connected via an uneven end surface structure.

14. The hybrid connector according to claim 1, characterized in that: A rear straight sleeve (23) is provided at the rear of the plug housing (21) of the non-pressure-bearing plug (2); the rear straight sleeve (23) is fixedly connected to the rear end of the plug housing (21), and a sealing unit (5) is provided on the outer wall of the front end of the rear straight sleeve (23).

15. A hybrid connector according to claim 14, characterized in that: The non-pressure-bearing end (11c) of the split joint (11) is a long cylindrical structure, so that the cavity of the non-pressure-bearing end (11c) can accommodate the plug housing (21) of the non-pressure-bearing plug (2) when the plug and the socket are plugged in, and cooperate with the sealing unit (5) outside the front end of the rear straight sleeve (23) to achieve pressure-bearing sealing after plugging.

16. A hybrid connector according to claim 15, characterized in that: The end surface of the non-pressure-bearing end (11c) of the pressure-bearing adapter socket (1) is provided with a protrusion (116) extending in the axial direction, and the outer peripheral surface of the tail straight sleeve (23) is provided with a groove (231), and the plug and socket are guided for insertion and prevented from rotating by the cooperation of the protrusion (116) and the groove (231).

17. The hybrid connector according to claim 14, characterized in that: A pressure-bearing tube (16) is installed outside the non-pressure-bearing end (11c) of the split joint (11); one end of the pressure-bearing tube (16) is sealingly connected to the outer peripheral surface of the non-pressure-bearing end (11c), and the other end extends beyond the end surface of the non-pressure-bearing end (11c); the pressure-bearing tube (16) is used to wrap around the outside of the plug housing (21) of the non-pressure-bearing plug (2) after the plug and the socket are plugged in, and cooperate with the sealing unit (5) on the rear straight sleeve (23) to achieve pressure-bearing sealing after plugging.

18. The hybrid connector according to claim 17, characterized in that: A keyway (118) is provided on the inner wall of the plug-in end of the non-pressure-bearing end (11c) of the split joint (11), and a convex key (211) cooperating with the keyway (118) is provided on the outer peripheral surface of the plug-in end of the plug housing (21) of the non-pressure-bearing plug (2), wherein the keyway (118) and the convex key (211) cooperate to achieve plug-in guidance and anti-rotation.

19. A hybrid connector according to claim 6, 7 or 14, characterized in that: The sealing unit (5) is a multi-layer sealing ring.

20. A socket, characterized in that: The socket is the pressure-bearing adapter socket (1) according to any one of claims 1 to 19.

21. A plug, characterized in that: The plug is a non-pressure-bearing plug (2) as described in any one of claims 1 to 19.

Images