A connector cable assembly suitable for extremely harsh environments

Abstract

The present invention relates to a connector cable assembly suitable for extremely harsh environments. The connector cable assembly comprises a plug cable assembly and a socket cable assembly. The plug cable assembly comprises a plug insulated cable and a plug. The socket cable assembly comprises a socket insulated cable and a socket. The connector cable assembly also comprises a connecting nut. The plug and the socket respectively comprise a connector housing. The connector housing is a metal housing. A pin contact is fixed in the connector housing by sintering a glass cake. A double-headed transfer component is provided at the front end anti-detachment assembly of the connector housing of the plug or the socket. The double-headed transfer component comprises a ceramic insulator and a double-headed jack contact arranged therein. A metal sealing ring is arranged between the connector housing of the plug and the connector housing of the socket. The pin contact in the plug and the socket is conductively connected to a core wire. A sealing filler cavity is arranged in the connector housing of the plug and the socket. Inorganic glue is poured into the sealing filler cavity.

Description

Technical Field

[0001] The invention relates to a connector cable assembly suitable for extremely harsh environments. Background Art

[0002] With the rapid development of science and technology, the degree of automation and integration in all walks of life is increasing. Single isolated instruments and instrument control equipment can no longer meet the development needs of contemporary industry. It is generally necessary to integrate and network a large number of instrument control equipment to establish the entire system. As one of the most basic electrical components, the connector assembly is the link and bridge for communication between various devices in the entire automation control system, and plays the role of receiving all signals and energy in the transmission system. The connector assembly generally includes two connectors that plug and match each other and cables connected to the connectors. The two connectors are plugs and sockets respectively. As the two connectors are plugged in and disconnected, the control circuit is connected or disconnected.

[0003] According to incomplete statistics, about 56% of electrical system failures occurred in the connector components that connect the equipment throughout the year. Once a failure occurs in this part, it will inevitably affect the local system, causing electrical failures such as short circuits, open circuits, signal failures, and loss of function. Even when the connector components of some key equipment fail, it will have a fatal impact on the entire system and cause the system to crash. Especially in some fields with extremely harsh working environments, such as nuclear power plants, weapons and equipment, petrochemicals, deep-sea sealing, aerospace and other fields, the connector components supporting key equipment need to be able to withstand high temperatures, high pressures, strong nuclear radiation, strong electromagnetic pulse interference, strong vibration, long life, high reliability, etc., and the performance requirements for connector components are very high. In these extremely harsh working environments, non-metallic materials are easily affected by factors such as heat, radiation, moisture, and vibration, which accelerate their aging process, thereby weakening the comprehensive performance of the material itself, and ultimately causing the connector components to lose their proper functions and electrical failures.

[0004] A Chinese utility model patent with authorization announcement number CN207320436U discloses a high-temperature resistant nuclear industry electrical connector, which includes a plug and a socket, wherein the socket is a glass sintered gas-sealed socket, but the plug adopts an organic insulator, and the sealing structure between the plug and the socket is an organic sealing ring, a sealing structure using organic materials. When the connector is used in an extremely harsh working environment such as a nuclear power plant, the organic material is easily affected by factors such as heat, radiation, moisture, vibration, etc., which accelerates its aging process, thereby weakening the comprehensive performance of the material itself, affecting the normal operation of the connector, and ultimately causing the connector to lose its proper function and fail. Summary of the invention

[0005] The purpose of the present invention is to provide a connector cable assembly suitable for extremely harsh environments, so as to solve the technical problem that in the prior art, organic materials are used as insulators and sealants in connectors used in the nuclear industry, which causes the organic materials to age easily in extreme environments and thus affects the normal operation of the connector.

[0006] To achieve the above-mentioned purpose, the technical scheme of the connector cable assembly suitable for extremely harsh environments of the present invention is: the connector cable assembly includes a plug cable assembly and a socket cable assembly, the plug cable assembly includes an insulated plug cable and a plug connected to the front end of the insulated plug cable, the socket cable assembly includes an insulated socket cable and a socket connected to the front end of the insulated socket cable, the connector cable assembly also includes a connecting nut for fastening the plug and the socket together when the plug and the socket are plugged in, the plug and the socket use their respective front ends as plug-in ends, the plug and the socket respectively include a connector shell, the connector shell is a metal shell, and a pin contact is fixed in the connector shell by sintering a glass cake; a double-headed adapter component is provided at the front end of the connector shell of the plug or the socket for anti-detachment, and the double-headed adapter component includes a The invention comprises a ceramic insulator and a double-ended socket contact arranged therein, wherein the two ends of the double-ended socket contact are used for mating with the pin contacts in the plug and the socket; a metal sealing ring is arranged between the connector housing of the plug and the connector housing of the socket to realize the plug-in sealing of the plug and the socket; the plug insulated cable and the socket insulated cable are both mineral insulated cables with core wires, intermediate insulators and outer sheaths, the pin contacts in the plug and the socket are conductively connected to the core wires of the corresponding mineral insulated cables, the connector housings of the plug and the socket are welded and fixedly connected to the outer sheaths of the corresponding mineral insulated cables, and a sealing filling cavity is arranged behind the corresponding glass cake in the connector housings of the plug and the socket, and the sealing filling cavity is poured with inorganic glue to form a potting colloid that seals and wraps the corresponding core wires and the pin contacts.

[0007] The beneficial effects of the present invention are as follows: in the connector cable assembly, a metal shell, a glass sintered fixed contact, a ceramic insulator, a potting colloid formed by inorganic glue pouring, and a mineral insulated cable are used, and all materials do not contain organic materials, which improves the performance of the connector cable assembly as a whole, is suitable for high-pressure working conditions such as deep-sea sealing, and can avoid the aging effects caused by organic materials. Moreover, in the present invention, the contacts in the plug and the socket are both pin contacts, and the two pin contacts are transferred through a double-headed transfer component with a double-headed jack contact. When used in a deep-sea environment, even if water seepage occurs, it will not flow into the interior of the device.

[0008] Furthermore, the rear part of the potting colloid in the plug and the socket has a sheath wrapping section that wraps the front end outer sheath of the corresponding mineral insulated cable. By providing the sheath wrapping section, the front end outer sheath of the mineral insulated cable can be wrapped inside to prevent water etc. from entering the outer sheath.

[0009] Furthermore, the connector housing includes a sleeve-shaped main housing and an adapter sleeve, the pin contact is fixed in the main housing, the adapter sleeve is inserted and arranged between the main housing and the outer sheath, and the adjacent parts of the adapter sleeve and the outer sheath and the adjacent parts of the adapter sleeve and the main housing are circumferentially welded to achieve a sealed connection. By dividing the connector housing into the main housing and the adapter sleeve, it is convenient to process and connect with the outer sheath, and the main housing and the connector contact can be pre-installed to facilitate subsequent assembly.

[0010] Furthermore, the rear end of the main housing is provided with a stop step arranged backwards, and the stop step is used to stop and cooperate with the front end of the adapter sleeve along the front-back direction. By providing the stop step, the limit of the forward movement of the adapter sleeve can be limited, which is convenient for limiting the position of the adapter sleeve.

[0011] Furthermore, the main housing comprises a front housing part and a rear housing part which are welded together, the pin contact is fixedly arranged in the front housing part, and an external thread section is arranged on the periphery of the rear housing part. The front housing part and the connector contact can be pre-assembled to form a module, which is more convenient for assembly.

[0012] Furthermore, the adjacent parts of the front shell part and the rear shell part are sealed by circumferential welding. Circumferential welding of the adjacent parts can ensure the sealing inside the metal shell, and has the advantages of resisting strong nuclear radiation and strong electromagnetic pulse interference.

[0013] Furthermore, the front shell part and the rear shell part have butt ends arranged facing each other, and one of the butt ends in the front shell part and the rear shell part has an annular groove on its end surface, and the other butt end has an annular protrusion on its end surface that matches and plugs into the annular groove. By providing the annular groove and the annular protrusion on the butt end end surfaces of the front shell part and the rear shell part, the positioning and plugging fit between the two can be facilitated.

[0014] Furthermore, the inner and outer circumferences of the butt end of the front shell part are arranged flush with the inner and outer circumferences of the butt end of the rear shell part. The butt ends of the front shell part and the rear shell part are matched in size, which can avoid the appearance of dead angles when pouring inorganic glue.

[0015] Furthermore, a stuffing box is welded to the rear end of the mineral insulated cable, and the core wires are led out of the stuffing box. The stuffing box is provided with a glass sintered body that separates and arranges the core wires and seals the rear end of the mineral insulated cable. The glass sintered body is provided in the stuffing box, which can seal and fix the rear end of the mineral insulated cable to prevent external moisture from entering the intermediate insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A cross-sectional view of a connector cable assembly suitable for extremely harsh environments provided by the present invention;

[0017] Figure 2 for Figure 1 Assembly diagram of the middle plug, mineral insulated cable and connecting nut assembly;

[0018] Figure 3 for Figure 2 The schematic diagram of the assembly of the middle plug and the connecting nut assembly;

[0019] Figure 4 for Figure 3 Schematic diagram of the double-ended adapter component;

[0020] Figure 5 for Figure 3 Schematic diagram of the metal sealing ring;

[0021] Figure 6 for Figure 3 Schematic diagram of the decomposition of

[0022] Figure 7 A cross-sectional view of a connecting nut assembly in a connector cable assembly suitable for extremely harsh environments provided by the present invention;

[0023] Figure 8 for Figure 6 Schematic diagram of the decomposition of

[0024] Fig. 9 A schematic diagram of assembling the socket and the mineral insulated cable provided by the present invention;

[0025] Fig.10 for Fig. 9 Schematic diagram of the socket;

[0026] Fig.11 for Fig.10 Schematic diagram of the decomposition of

[0027] Fig.12 A schematic diagram of a connector cable assembly suitable for extremely harsh environments in a locked state provided by the present invention;

[0028] Fig.13 A schematic diagram of the cooperation between the ball and the track groove in the connector cable assembly suitable for extremely harsh environments provided by the present invention in a locked state;

[0029] Fig.14 A schematic diagram of a connector cable assembly suitable for extremely harsh environments in an unlocked state provided by the present invention;

[0030] Fig.15A schematic diagram of the cooperation between the ball bearing and the track groove in the connector cable assembly suitable for extremely harsh environments provided by the present invention in an unlocked state;

[0031] Explanation of reference numerals: 100-plug; 11-plug housing; 12-plug adapter sleeve; 13-plug inorganic glue; 14-plug glass cake; 15-plug contact; 16-plug rear housing part; 17-plug front housing part; 18-plug annular protrusion; 19-plug external thread section; 110-double-headed adapter component; 111-plug retaining spring; 112-ceramic insulating part; 113-socket contact; 114-corrugated spring; 115-metal sealing ring; 116-C-shaped sheath; 117-annular spring; 200-socket; 21-socket housing; 22-socket adapter sleeve; 23-socket inorganic glue; 24-plug Seat glass cake; 25-socket contact; 26-socket rear shell part; 27-socket front shell part; 28-socket annular protrusion; 29-socket external thread section; 210-spiral groove; 211-convex key; 300-connecting nut assembly; 31-connecting nut; 32-stop sleeve; 33-compression spring; 34-threaded retaining ring; 35-track groove; 36-rivet; 37-ball; 38-groove; 39-pin; 310-locking groove; 311-unlocking groove; 312-stop groove; 400-mineral insulated cable; 41-outer sheath; 42-intermediate insulator; 43-core wire; 51-stuffing box; 52-glass sintered body. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] A specific embodiment of the connector cable assembly of the present invention is suitable for use in extremely harsh environments, such as Figures 1 to 15 As shown, the connector cable assembly in this embodiment is suitable for extremely harsh environments, and has the advantages of high temperature resistance, fire resistance, strong nuclear radiation resistance, vibration resistance, long life, high reliability, and moisture resistance.

[0034] like Figure 1 As shown, the connector cable assembly suitable for extremely harsh environments includes a plug cable assembly and a socket cable assembly that are mutually plugged and matched, the plug cable assembly includes a plug 100 and a mineral insulated cable 400, and the socket cable assembly includes a socket 200 and a mineral insulated cable 400. The connector cable assembly suitable for extremely harsh environments also includes a connecting nut assembly 300 that locks the plug 100 and the socket 200 when they are plugged in place, and the front ends of the plug 100 and the socket 200 are defined as plug-in ends for plugging and matching. When in use, the mineral insulated cables 400 are connected to the rear ends of the plug 100 and the socket 200.

[0035] The structure of the plug 100 is as follows: Figures 2 to 6As shown, the plug 100 includes a sleeve-shaped plug housing 11, which is a metal housing. The plug housing 11 includes a front plug housing part 17 and a rear plug housing part 16 that are assembled together. In order to facilitate the plug-in fitting of the two parts, a ring groove is provided at the rear end of the front plug housing part 17, and a plug annular protrusion 18 is provided at the front end of the rear plug housing part 16. The plug annular protrusion 18 and the positioning plug-in sleeve of the ring groove facilitate the plug-in fitting of the two parts of the plug housing 11. In order to ensure the sealing inside the plug housing 11, the adjacent parts of the front plug housing part 17 and the rear plug housing part 16 are laser welded. A plug contact 15 is sintered and fixed in the front plug housing part 17 through a plug glass cake 14. The plug contact 15 is a pin contact. Even if water leakage occurs, it can be prevented from flowing into the device. A double-ended adapter component 110 is installed in front of the plug glass cake 14. The double-ended adapter component 110 is fixed in the front and rear housing parts 17 of the plug by front and rear limit limits. The rear end of the double-ended adapter component 110 is stopped by a stopping step set in the front housing part 17 of the plug, and the front end is stopped by a plug retaining spring 111 set in the front housing part 17 of the plug.

[0036] The structure of the double-ended adapter 110 is as follows: Figure 4 As shown, the double-ended adapter component 110 includes two ceramic insulators 112, and the ceramic insulators 112 are made of ceramic materials that can withstand high temperatures of 1400°C. A through hole is provided in the ceramic insulator 112, and a jack contact 113 is fixedly installed in the through hole. The jack contact 113 is a double-ended jack contact. During assembly, one end of the jack contact 113 is connected to the plug contact 15, and the other end is inserted into the socket contact 25 in the socket 200, so that the circuit or signal conduction between the plug 100 and the socket 200 is realized.

[0037] An outward turning edge is provided on the front shell part 17 of the plug. A corrugated spring 114 is mounted behind the outward turning edge and a metal sealing ring 115 is mounted in front of the front shell part 17 of the plug. When in use, the corrugated spring 114 is elastically pressed between the outward turning edge and the connecting nut 31.

[0038] The structure of the metal sealing ring 115 is as follows: Figure 5 As shown, the metal sealing ring 115 includes a C-shaped sheath 116 and an annular spring 117 contained in the C-shaped sheath 116. Of course, in other embodiments, the metal sealing rings disclosed in two Chinese utility model patents with authorization announcement numbers CN207584012U and CN204420104U can also be used. The metal sealing ring 115 can withstand a maximum ultra-high pressure of 500MPa.

[0039] like Figure 3As shown, the rear end of the plug rear housing portion 16 is provided with external threads to form a plug external thread section 19, which is convenient for installation on the device housing during assembly.

[0040] The structure of the mineral insulated cable 400 is as follows Figure 2 and Fig. 9 As shown, the mineral insulated cable 400 includes an outer sheath 41 made of metal, an intermediate insulator 42 in the middle, and an inner core wire 43, wherein the intermediate insulator 42 is formed of inorganic powder. The end of the mineral insulated cable 400 connected to the plug 100 or the socket 200 is the front end, and a stuffing box 51 is welded and fixed at the rear end of the mineral insulated cable 400. The stuffing box 51 is filled with a glass sintered body 52 formed by sintering glass powder. The rear end of the core wire 43 passes through the glass sintered body 52, and the rear end of the mineral insulated cable 400 is sealed by the glass sintered body 52 to effectively prevent moisture.

[0041] like Figure 2 As shown, the front end of the mineral insulated cable 400 extends into the plug housing 11, the core wire 43 is welded to the plug contact 15, and the plug inorganic glue 13 is filled in the plug housing 11 to fix the core wire 43 and the plug contact 15, so that each core wire 43 is physically isolated, and the core wires 43 are prevented from short-circuiting under vibration environment, thereby improving the anti-vibration performance. The plug 100 also includes a plug adapter sleeve 12 adapted to be inserted between the plug housing 11 and the outer sheath 41, and the plug adapter sleeve 12 is welded to the plug housing 11 and the outer sheath 41 respectively. During assembly, the core wire 43 is first welded to the plug contact 15, and then the plug inorganic glue 13 is filled in the plug housing 11. After the plug inorganic glue 13 solidifies, the plug adapter sleeve 12 is welded between the plug housing 11 and the outer sheath 41, and the plug inorganic glue 13 solidifies to form a potting colloid. One end of the potting colloid wraps around the outer sheath 41 to form a sheath wrapping section.

[0042] like Fig. 9 , Fig.10 and Fig.11 The structure of the socket 200 is shown in FIG. 2 . The structure of the socket 200 is similar to that of the plug 100 . The components thereof, such as the socket housing 21 , the socket adapter sleeve 22 , the socket inorganic glue 23 , the socket glass cake 24 , the socket contact 25 , the socket rear housing portion 26 , the socket front housing portion 27 , the socket annular protrusion 28 , and the socket external thread section 29 are all the same as those of the components in the plug 100 . The connection method between the socket 200 and the mineral insulated cable 400 is also the same as that between the plug 100 and the mineral insulated cable 400 , which will not be described in detail herein. The socket contact 25 is a pin contact, which is used to be connected to the corresponding socket contact 113 in the double-ended adapter component 110 in the plug 100 .

[0043] Three spiral grooves 210 are provided at the front end of the socket housing 21. The spiral grooves 210 are for the staples 39 on the connecting nut 31 to extend into. When the plug 100 and the socket 200 are plugged into each other, the staples 39 rotate spirally in the spiral grooves 210 until they reach the end of the spiral grooves 210, and are finally kept at the end position under the action of the corrugated spring 114. Three convex keys 211 are also arranged evenly spaced along the circumference at the front end of the socket housing 21. The three convex keys 211 are used to snap into the grooves 38 on the anti-rotation sleeve 32 to achieve the circumferential anti-rotation assembly of the socket housing 21 and the anti-rotation sleeve 32. In other embodiments, the grooves can be arranged at the front end of the socket housing, and the convex keys can be arranged on the anti-rotation sleeve.

[0044] After the plug 100 and the socket 200 are plugged into place, they need to be locked by connecting the nut assembly 300. The structure of the connecting nut assembly 300 is as follows: Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the connecting nut assembly 300 includes a connecting nut 31 mounted on the plug housing 11. The end of the connecting nut 31 facing the socket 200 is defined as the front end, and the end facing the plug 100 is defined as the rear end. The front end of the connecting nut 31 is evenly distributed with three staple holes and three track grooves 35 along the circumferential direction. During assembly, the staple 39 is fixed in the staple hole by riveting, and the radial inner end of the staple 39 extends into the connecting nut 31. The connecting nut 31 is an axial step structure, with a larger inner and outer diameter at the front end and a hexagonal structure at the rear end. The connecting nut 31 can be rotated with the help of a tool to make the staple 39 spirally move along the three spiral grooves 210 on the socket 200, thereby realizing the plugging and separation between the plug 100 and the socket 200. An external thread is provided at the rear end of the connecting nut 31 for threaded assembly of the threaded retaining ring 34.

[0045] like Fig.13 and Fig.15 As shown, the track groove 35 is T-shaped as a whole, and includes two unlocking grooves 311 extending in the circumferential direction, the two unlocking grooves 311 are connected, a locking groove 310 is provided at the intersection of the two unlocking grooves 311, the locking groove 310 extends in the front-back direction, the locking groove 310 is connected with the unlocking groove 311, and a rotation-stopping groove 312 is further provided on the circumferential outer side of each unlocking groove 311, and the rotation-stopping groove 312 is connected with the unlocking groove 311. The track groove 35 can be embedded with the ball 37.

[0046] The connecting nut assembly 300 further includes a stop sleeve 32, which is mounted on the outside of the connecting nut 31 and can move forward and backward relative to the connecting nut 31. Three through holes are provided at the front end of the stop sleeve 32 corresponding to the three track grooves 35, and the three through holes are used to place the balls 37, such as Figure 7As shown, a ball 37 is placed in the through hole and encapsulated by a rivet 36 to prevent the ball 37 from falling out. A part of the ball 37 is located in the track groove 35, and the other part is located in the through hole of the anti-rotation sleeve 32. The anti-rotation fit between the anti-rotation sleeve 32 and the connecting nut 31 can be achieved through the ball 37. In this embodiment, the ball 37 constitutes a radial convex portion, that is, a nut anti-rotation plug-in structure and an unlocking plug-in structure. The existence of the ball 37 can ensure that the friction between the anti-rotation sleeve 32 and the connecting nut 31 is rolling friction when they are relatively active, thereby reducing wear. The ball 37 can cooperate with the inner wall of the track groove 35 to stop. In other embodiments, the nut anti-rotation plug-in structure and the unlocking plug-in structure can be structures such as pins, staples, and convex keys.

[0047] like Figure 7 As shown, the rear end of the anti-rotation sleeve 32 has an inward turning edge facing backwards. During assembly, a compression spring 33 is arranged behind the inward turning edge, and the anti-slipping is achieved by screwing a threaded retaining ring 34 on the connecting nut 31. Three grooves 38 are evenly distributed along the circumference on the inner wall of the front end of the anti-rotation sleeve 32. The grooves 38 are used to axially plug and match with the convex keys 211 in the socket 200 to achieve the anti-rotation assembly between the socket housing 21 and the anti-rotation sleeve 32. In this embodiment, the grooves 38 constitute a housing anti-rotation plug-in structure. The anti-rotation sleeve 32 constitutes a anti-rotation sleeve that is sleeved on the outside of the connecting nut 31, that is, a anti-rotation sleeve.

[0048] The use process of the present invention is as follows: when the plug 100 and the socket 200 are plugged together, the socket housing 21 extends into the connecting nut 31, and the staple 39 in the connecting nut 31 moves in a spiral motion in the spiral groove 210 on the socket 200. The socket housing 21 of the socket 200 presses against the plug housing 11, and the plug housing 11 and the connecting nut 31 move toward each other and compress the corrugated spring 114. When the staple 39 moves to the end of the spiral groove 210, the staple 39 and the connecting nut 31 are pressed against the groove wall of the spiral groove 210 in the front-to-back direction (i.e., axial direction) under the elastic action of the corrugated spring 114, achieving axial fixation. Fig.11 and Fig.12As shown, when the staple 39 moves to the end of the spiral groove 210, the ball 37 is placed in the locking groove 310, realizing the circumferential anti-rotation assembly between the connecting nut 31 and the anti-rotation sleeve 32, and the anti-rotation sleeve 32 presses the ball 37 against the front end of the locking groove 310 under the elastic force of the compression spring 33. At this time, the three convex keys 211 provided on the socket housing 21 are correspondingly inserted into the groove 38 axially, realizing the anti-rotation assembly between the socket housing 21 and the anti-rotation sleeve 32, and since the anti-rotation sleeve 32 and the connecting nut 31 have realized the circumferential anti-rotation, the socket housing 21 and the anti-rotation sleeve 32 realize the circumferential anti-rotation as a whole. The connecting nut 31 will not rotate, and the staple 39 will not be disengaged from the spiral groove 210 by circumferential rotation, and the position of the plug 100 and the socket 200 is locked. At this time, as long as no external force is applied to the anti-rotation sleeve 32 in the front-back direction, the anti-rotation sleeve 32 will not rotate in the circumferential direction, and the plug 100 and the socket 200 remain in the plugged position. At this time, the position of the anti-rotation sleeve 32 is the locking position. The travel of the anti-rotation sleeve 32 driven forward by the compression spring 33 is the front travel, and the locking position is the limit position of the front travel.

[0049] like Fig.14 and Fig.15 As shown, when unlocking, the anti-rotation sleeve 32 is pulled backward, and the anti-rotation sleeve 32 drives the ball 37 to move backward along the locking groove 310 to the position connected with the unlocking groove 311, and the ball 37 and the locking groove 310 are separated from the circumferential stop, and the convex key 211 and the groove 38 are also separated from the circumferential stop. At this time, the anti-rotation sleeve 32 is rotated to make the ball 37 move along one of the unlocking grooves 311, and finally the ball 37 is pushed into the anti-rotation groove 312 under the elastic force of the compression spring 33, so that the ball 37 is kept in the anti-rotation groove 312. After the convex key 211 and the groove 38 are separated from the circumferential stop, and the ball 37 and the locking groove 310 are separated from the circumferential stop, the connecting nut 31 can be rotated to overcome the elastic force of the corrugated spring 114, so that the nail 39 on the connecting nut 31 is spirally rotated out of the spiral groove 210, and the plug 100 and the socket 200 are unlocked. When the ball 37 moves to the junction of the locking groove 310 and the unlocking groove 311 , the position of the anti-rotation sleeve 32 is the unlocking position, which is the limit position of the anti-rotation sleeve 32 moving backward.

[0050] In this embodiment, the plug housing 11 and the socket housing 21 are both connector housings, and the plug contact 15 and the socket contact 25 are both pin contacts.

[0051] In this embodiment, the mineral insulated cable connected to the plug 100 constitutes a plug insulated cable, and the mineral insulated cable connected to the socket 200 constitutes a socket insulated cable.

Claims

1. A connector cable assembly suitable for extremely harsh environments, comprising a plug cable assembly and a socket cable assembly, wherein the plug cable assembly comprises a plug insulated cable and a plug connected to the front end of the plug insulated cable, the socket cable assembly comprises a socket insulated cable and a socket connected to the front end of the socket insulated cable, the connector cable assembly further comprises a connecting nut for fastening the plug and the socket together when the plug and the socket are plugged in, the plug and the socket use their respective front ends as plug-in ends, and the characteristics are: The plug and the socket respectively include a connector housing, which is a metal housing, in which a pin contact is fixed by sintering a glass cake; a double-headed adapter component is mounted on the front end of the connector housing of the plug or the socket for anti-detachment, and the double-headed adapter component includes a ceramic insulator and a double-headed socket contact disposed therein, and the two ends of the double-headed socket contact are used for mating with the pin contact in the plug and the socket; A metal sealing ring is provided between the connector housing of the plug and the connector housing of the socket to achieve plug-in sealing of the plug and the socket; The plug insulated cable and the socket insulated cable are both mineral insulated cables with core wires, intermediate insulators and outer sheaths. The pin contacts in the plug and the socket are electrically connected to the core wires of the corresponding mineral insulated cables. The connector housings of the plug and the socket are welded and fixedly connected to the outer sheaths of the corresponding mineral insulated cables. A sealing filler cavity is arranged behind the corresponding glass cake in the connector housings of the plug and the socket. Inorganic glue is poured into the sealing filler cavity to form a potting glue that seals and wraps the corresponding core wires and the pin contacts. The front end of the socket shell is provided with three spiral grooves, and the front end of the connecting nut is evenly distributed along the circumference with three staple holes and three track grooves. The spiral groove is for the staples in the staple holes to extend into, and the track groove is T-shaped as a whole. The track groove includes two unlocking grooves extending circumferentially and connected to each other, and a locking groove extending along the front-to-back direction and connected to the unlocking groove is provided at the intersection of the two unlocking grooves. A stop groove connected to the unlocking groove is also provided on the circumferential outer side of each unlocking groove; the connector cable assembly also includes a stop sleeve reciprocatingly mounted on the connecting nut along the plug-in direction and a compression spring applying an elastic force to the stop sleeve, and through holes are provided at the front end of the stop sleeve corresponding to the three track grooves, and the through holes are used to place corresponding balls or pins or staples or cams, and the stop sleeve is also provided with a shell stop plug-in structure for mating with the socket shell so that the stop sleeve and the corresponding socket shell can be assembled circumferentially in a non-rotatable manner.

2. The connector cable assembly suitable for extremely harsh environments according to claim 1, characterized in that: The rear part of the potting colloid in the plug and the socket is provided with a sheath wrapping section wrapping the outer sheath of the front end of the corresponding mineral insulated cable.

3. The connector cable assembly suitable for extremely harsh environments according to claim 1 or 2, characterized in that: The connector housing comprises a sleeve-shaped main housing and an adapter sleeve, the pin contact is fixed in the main housing, the adapter sleeve is inserted and arranged between the main housing and the outer sleeve, and the adjacent parts of the adapter sleeve and the outer sleeve and the adjacent parts of the adapter sleeve and the main housing are circumferentially welded to achieve a sealed connection.

4. The connector cable assembly suitable for extremely harsh environments according to claim 3, characterized in that: The rear end of the main housing is provided with a stop step arranged backwards, and the stop step is used for stop cooperation with the front end of the adapter sleeve along the front-to-back direction.

5. The connector cable assembly suitable for extremely harsh environments according to claim 3, characterized in that: The main housing comprises a front housing part and a rear housing part which are welded together, the needle contact piece is fixedly arranged in the front housing part, and an external thread section is arranged on the outer periphery of the rear housing part.

6. The connector cable assembly suitable for extremely harsh environments according to claim 5, characterized in that: The junction between the front shell part and the rear shell part is circumferentially welded to achieve a sealed connection.

7. The connector cable assembly suitable for extremely harsh environments according to claim 3, characterized in that: The front shell part and the rear shell part have butt ends arranged facing each other. One of the butt ends has an annular groove on its end face, and the other butt end has an annular protrusion on its end face that fits the annular groove.

8. The connector cable assembly suitable for extremely harsh environments according to claim 7, characterized in that: The inner circumferential surface and the outer circumferential surface of the butt joint end of the front shell part are arranged flush with the inner circumferential surface and the outer circumferential surface of the butt joint end of the rear shell part.

9. The connector cable assembly suitable for extremely harsh environments according to claim 1 or 2, characterized in that: The rear end of the mineral insulated cable is welded with a stuffing box, the core wires are led out of the stuffing box, and a glass sintered body is provided in the stuffing box to separate and arrange the core wires and seal the rear end of the mineral insulated cable.

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