A connector assembly

Abstract

The present invention relates to a connector assembly. The connector assembly comprises a first armored cable and a second armored cable, each comprising a conductor core wire, a shielding layer, an insulating layer and a metal layer which are sequentially stacked from the inside to the outside along the radial direction, and the shielding layer is filled with insulating material to wrap the conductor core wire; a plug, comprising a plug housing assembly, a jack assembly, and a first pin assembly; a socket, comprising a socket housing assembly and a second pin assembly; the plug and the socket are plugged together so that the second pin head is inserted into the jack assembly. The present invention can meet the insulation and sealing requirements in the working environment within the containment shell and prolong the service life.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing supporting devices for nuclear power plants, and in particular to a connector assembly. Background Art

[0002] The electrical connector assembly and cable for instruments inside the containment of a nuclear power plant are used to connect the instruments inside the containment with the penetrations on the containment to meet the needs of signal transmission between the instrument signals inside the containment and the signals transmitted to the equipment or cabinets outside the containment.

[0003] The long-term operating temperature in the containment of a nuclear power plant's heating reactor is as high as 282°C, and in severe accident conditions the temperature can briefly reach over 300°C. If the instrument electrical connector assembly cannot meet the sealing and insulation requirements in severe accident conditions, it will cause instrument failure in the containment, leading to safety accidents in the nuclear power plant and even nuclear leakage.

[0004] Nuclear power plant electrical equipment has only one nuclear safety level, called 1E, and other equipment is "out-of-level equipment". 1E equipment can achieve the following functions:

[0005] - Automatic shutdown;

[0006] - containment isolation;

[0007] - Emergency cooling of the core;

[0008] --Heat removal from the reactor and reactor building;

[0009] - Prevent and limit radioactive releases in accident situations.

[0010] Existing electrical connector assemblies cannot meet the 1E level requirements, that is, they cannot meet the insulation and sealing requirements in the working environment inside the containment of a nuclear power plant heating reactor. Summary of the invention

[0011] In view of the above problems in the prior art, the present invention proposes a connector assembly, which can meet the insulation and sealing requirements in the working environment inside the containment and extend the service life.

[0012] Specifically, the present invention proposes a connector assembly suitable for high-temperature instruments in a containment vessel of a nuclear power plant, comprising:

[0013] The first armored cable and the second armored cable respectively include a conductor core wire, a shielding layer, an insulating layer and a metal layer which are sequentially stacked from the inside to the outside along the radial direction thereof, and the shielding layer is filled with insulating material to wrap the conductor core wire;

[0014] A plug, comprising a plug housing assembly, a jack assembly and a first pin assembly, wherein the jack assembly is arranged at the head end of the plug housing assembly, the first pin assembly is arranged in the plug housing assembly and comprises a first pin, the head end of the first pin is inserted into the jack assembly, one end of the first armored cable extends into the plug housing assembly, and the conductor core wire of the first armored cable is crimped with the tail end of the first pin and then fixed by laser welding, the plug housing assembly comprises a first tightening nut, and the surface of the first armored cable is fixed to the first tightening nut by laser welding;

[0015] A socket, comprising a socket housing assembly and a second pin assembly, wherein the second pin assembly is combined with the socket housing assembly to have a second pin, one end of the second armored cable extends into the socket housing assembly, the conductor core wire of the second armored cable is crimped to the tail end of the second pin and then fixed by laser welding, the socket housing assembly comprises a second tightening nut, and the surface of the second armored cable is fixed to the second tightening nut by laser welding;

[0016] The plug is plugged into the socket so that the second pin head is inserted into the socket assembly;

[0017] Wherein, the insulating layer is made of silicon dioxide, and the insulating material is silicon dioxide;

[0018] The shielding layer is a copper tube, and the shielding layer is connected to the shielding ground outside the safety shell through the socket;

[0019] The conductor core wire is made of thermocouple conductor material or copper conductor material, and the metal layer is a stainless steel layer.

[0020] According to one embodiment of the present invention, the plug housing assembly includes a connecting nut, a locking ring and a plug tail cover, the connecting nut is fixed to the head of the plug tail cover through the locking ring, and the first locking nut is fixed to the end thread of the plug tail cover.

[0021] According to one embodiment of the present invention, the jack assembly includes a plug connector, a first jack insulator, a double jack member and a first jack insulator cover, wherein the first jack insulator is arranged in the plug connector, one end of the double jack member extends into the first jack insulator, and the other end extends into the first jack insulator cover.

[0022] According to one embodiment of the present invention, the first pin assembly also includes a first shell, a first fixing seat and a first single socket member, the first fixing seat is arranged in the first shell and opposite to the first socket insulator cover plate, the first single socket member is arranged in the first fixing seat, and the first pin is arranged in the first single socket member and partially inserted into the double socket member.

[0023] According to an embodiment of the present invention, the first housing, the first fixing seat, the first single-hole member and the first pin are sintered into one body.

[0024] According to an embodiment of the present invention, the socket housing assembly further comprises a socket tail cover, and the second tightening nut is threadably matched and fixed to an end portion of the socket tail cover.

[0025] According to one embodiment of the present invention, the second pin assembly also includes a second shell, a second fixing seat and a second single socket member, the second shell is plugged into and matched with the head of the socket tail cover, the second fixing seat is arranged in the second shell, the second single socket member is arranged in the second fixing seat, and the second pin portion is arranged in the second single socket member and partially exposed in the second shell.

[0026] According to an embodiment of the present invention, the second housing, the second fixing seat, the second single-hole member and the second pin are sintered into one body.

[0027] According to one embodiment of the present invention, the diameter of the first armored cable and the second armored cable is 10mm±0.04mm, the thickness of the metal layer is 0.6mm-0.7mm, and the insulation resistance of the first armored cable and the second armored cable is greater than 1000MΩ below 25°C and greater than 10MΩ above 280°C.

[0028] A connector assembly provided by the present invention provides a double-layer insulation protection structure design through the insulation layer and insulation material of the armored cable, thereby improving the insulation performance of the connector assembly, and further improving the sealing performance and extending the service life by laser welding and fixing the conductor core wire and the pin after crimping, and laser welding and fixing the armored cable and the tightening nut.

[0029] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are included to provide further explanation of the present invention, and they are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with this specification serve to explain the principles of the present invention. In the accompanying drawings:

[0031] Figure 1 A schematic structural diagram of a connector assembly according to an embodiment of the present invention is shown.

[0032] Figure 2 A schematic diagram of the structure of an armored cable according to an embodiment of the present invention is shown.

[0033] Figure 3 yes Figure 1 Schematic diagram of the plug structure.

[0034] Figure 4 yes Figure 3 Exploded diagram.

[0035] Figure 5 yes Figure 1 Schematic diagram of the socket structure.

[0036] Figure 6 yes Figure 5 Exploded diagram.

[0037] The above drawings include the following reference numerals:

[0038] First armored cable 100a

[0039] Second armored cable 100b

[0040] Conductor core 101

[0041] Shielding layer 102

[0042] Insulation layer 103

[0043] Metal layer 104

[0044] Insulation material 105

[0045] Wire 106

[0046] Plug 200

[0047] Plug housing assembly 210

[0048] Connecting nut 211

[0049] Locking ring 212

[0050] Plug tail cover 213

[0051] First tightening nut 214

[0052] Jack assembly 220

[0053] Plug connector 221

[0054] First socket insulator 222

[0055] Double socket 223

[0056] First jack insulator cover plate 224

[0057] First Card Bead 225

[0058] Second card bead 226

[0059] First pin assembly 230

[0060] First pin 231

[0061] First housing 232

[0062] The first fixing seat 233

[0063] First single socket member 234

[0064] Compression spring 235

[0065] Second collar 236

[0066] Cover plate 237

[0067] First collar 238

[0068] Socket 300

[0069] Socket housing assembly 310

[0070] Socket tail cover 312

[0071] Second tightening nut 313

[0072] The third card bead 314

[0073] Fourth card bead 315

[0074] The second pin assembly 320

[0075] Second pin 321

[0076] Second housing 322

[0077] The second fixing seat 323

[0078] Second single socket member 324

[0079] The third collar 325 . DETAILED DESCRIPTION

[0080] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0081] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0082] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0083] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0084] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0085] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0086] Figure 1A schematic structural diagram of a connector assembly according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of an armored cable according to an embodiment of the present invention is shown. Figure 3 yes Figure 1 Schematic diagram of the plug structure. Figure 4 yes Figure 3 Exploded diagram. Figure 5 yes Figure 1 Schematic diagram of the socket structure. Figure 6 yes Figure 5 As shown in the figure, a connector assembly suitable for high temperature instruments in a containment of a nuclear power plant mainly comprises a first armored cable 100a, a second armored cable 100b, a plug 200 and a socket 300.

[0087] refer to Figure 2 The first armored cable 100a and the second armored cable 100b respectively include a conductor core 101, a shielding layer 102, an insulating layer 103 and a metal layer 104 which are sequentially stacked from the inside to the outside along the radial direction. The shielding layer 102 is filled with an insulating material 105 to wrap the conductor core 101. The first armored cable 100a and the second armored cable 100b provide double-layer insulation protection for the conductor core 101 through the insulating layer 103 and the insulating material 105, thereby improving the insulation performance of the connector assembly.

[0088] refer to Figure 1 , Figure 3 and Figure 4 , the plug 200 includes a plug housing assembly 210, a jack assembly 220 and a first pin assembly 230. The plug housing assembly 210 is a hollow structure. The jack assembly 220 and the first pin assembly 230 are arranged in the plug housing assembly 210 and are connected to each other. The first pin assembly 230 includes a first pin 231. The head end of the first pin 231 is inserted into the jack assembly 220. One end of the first armored cable 100a extends into the plug housing assembly 210, and the conductor core wire of the first armored cable is crimped with the tail end of the first pin 231 and then fixed by laser welding. The plug housing assembly 210 includes a first tightening nut 214. The surface of the first armored cable 100a is fixed to the first tightening nut 214 by laser welding.

[0089] refer to Figure 1 , Figure 5 and Figure 6The socket 300 includes a socket housing assembly 310 and a second pin assembly 320. The second pin assembly 320 is combined with the socket housing assembly 310 to have a second pin 321. One end of the second armored cable extends into the socket housing assembly 310, and the conductor core wire of the second armored cable is crimped with the tail end of the second pin 321 and then fixed by laser welding. The socket housing assembly 310 includes a second tightening nut 313. The surface of the second armored cable is fixed to the second tightening nut 313 by laser welding.

[0090] It is easy to understand that the plug 200 is plugged into the socket 300 so that the head end of the second pin 321 is inserted into the socket assembly 220. The second pin 321 is electrically connected to the first pin 231. The high temperature instrument communicates with the equipment outside the containment through the first pin 231 in the plug and the second pin 321 in the socket.

[0091] It should be noted that the conductor core wire 101 is first crimped and then fixed to the first pin 231 and the second pin 321 by laser welding. This double connection method not only ensures the close connection between the conductor core wire 101 and the pin, but also makes the signal transmission more stable and reliable. At the same time, the surface of the first armored cable 100a and the second armored cable 100b is fixed to the first tightening nut 214 and the second tightening nut 313 by laser welding technology. Through the fine laser welding process, a firm connection is formed between the first armored cable 100a, the second armored cable 100b and the tightening nut, which greatly enhances the mechanical strength and stability of the connection part and significantly improves the sealing performance of the connector assembly. The heat-resistant temperature of laser welding can reach more than 3000 degrees Celsius, which can meet the use environment requirements of the connector assembly. In addition, the use of laser welding technology can effectively prevent the intrusion of foreign substances such as dust and moisture, and provide reliable protection for the normal operation of the connector assembly. In the special environment inside the containment, even under long-term working conditions, the safety and stability of the connector assembly can be ensured, further improving the reliability and service life of the equipment.

[0092] In one embodiment, reference Figure 3 and Figure 4 The plug housing assembly 210 includes a connecting nut 211, a locking ring 212 and a plug tail cover 213. The connecting nut 211 is fixed with the plug tail cover 213 through the locking ring 212. The connecting nut 211 and the locking ring 212 are fixed by the end serrations, and the locking ring 212 and the plug tail cover 213 are fixed by clamping. The first tightening nut 214 is fixed with the end thread of the plug tail cover 213.

[0093] In one embodiment, the jack assembly 220 includes a plug connector 221, a first jack insulator 222, a dual jack member 223, and a cover plate of the first jack insulator 222. The first jack insulator 222 is disposed in the plug connector 221. The first jack insulator 222 has one or more channels. One end of the dual jack member 223 is inserted into the channel of the first jack insulator 222, and the other end extends into the first jack insulator cover plate 224. One end of the dual jack member 223 extends into the first jack insulator 222, and the other end extends into the first jack insulator cover plate 224.

[0094] In one embodiment, the first pin assembly 230 further includes a first housing 232, a first fixing seat 233 and a first single socket member 234. The first fixing seat 233 is disposed in the first housing 232 and is opposite to the first socket insulator cover 224. The first single socket member 234 is disposed in the first fixing seat 233, and the first pin 231 is disposed in the first single socket member 234 and partially inserted into the double socket member 223.

[0095] In one embodiment, the first housing 232, the first fixing seat 233, the first single-hole member 234 and the first pin 231 are sintered into one body. The sintering process is to tightly combine multiple parts through high-temperature brazing to effectively reduce the leakage rate.

[0096] In one embodiment, the first pin assembly 230 further includes a compression spring 235 and a cover plate 237. The compression spring 235 cooperates with the locking ring 212 to provide a pressing force to keep the first pin assembly 230 fixed. The cover plate 237 is sleeved outside the locking ring 212 to cover the connection position of the connecting nut 211 and the locking ring 212. The first pin assembly 230 further includes a first collar 238 and a second collar 236 to fix the overall structure of the first pin assembly 230 to prevent the position of the first single socket member 234 from sliding.

[0097] In one embodiment, the jack assembly 220 further includes a first clamping bead 225 and a second clamping bead 226, which are disposed between the first clamping nut 214 and the plug tail cover 213. The first clamping bead 225 and the second clamping bead 226 are used to improve the reliability of the threaded connection between the first clamping nut 214 and the plug tail cover 213, and prevent the threaded connection between the two from loosening under vibration or alternating load conditions.

[0098] In one embodiment, the socket housing assembly 310 further includes a socket rear cover 312. The second tightening nut 313 is threadably matched with an end portion of the socket rear cover 312 for fixing.

[0099] In one embodiment, the second pin assembly 320 further includes a second housing 322, a second fixing seat 323, and a second single socket member 324. The second housing 322 is plugged into the head of the socket tail cover 312, the second fixing seat 323 is disposed in the second housing 322, and the second single socket member 324 is disposed in the second fixing seat 323. The second pin 321 is partially disposed in the second single socket member 324 and partially exposed in the second housing 322.

[0100] In one embodiment, the second housing 322 , the second fixing seat 323 , the second single-hole member 324 and the second pin 321 are sintered into one body to effectively reduce the leakage rate.

[0101] In one embodiment, the socket 300 further includes a third collar 325. The third collar 325 is used to fix the second fixing seat 323 to prevent the second single socket member 324 from sliding.

[0102] In one embodiment, the socket housing assembly 310 further includes a third clamping bead 314 and a fourth clamping bead 315 for improving the reliability of the threaded connection between the second tightening nut 313 and the socket tail cover 312 to prevent the threaded connection between the two from loosening under vibration or alternating load conditions.

[0103] In one embodiment, the insulating layer 103 of the first armored cable 100a and the second armored cable 100b is made of silicon dioxide. The insulating material 105 filled in the shielding layer 102 of the first armored cable 100a and the second armored cable 100b is silicon dioxide. The chemical properties of silicon dioxide are stable, it is not easy to absorb moisture, and it has high fire resistance, high temperature resistance, small thermal expansion coefficient, high insulation, and corrosion resistance. And the melting point of silicon dioxide is 1723°C. Pure silicon dioxide as the insulating material 105 can ensure that the insulation resistance of the first armored cable 100a and the second armored cable 100b is ≥1000MΩ below normal temperature (25°C), and it can still be ≥10MΩ at a high temperature of 280°C.

[0104] In one embodiment, the shielding layer 102 of the first armored cable 100a and the second armored cable 100b is a copper tube. Figure 3 and Figure 5 , the shielding layer 102 is connected to the first single-hole component 234 and the second single-hole component 324 through the wire 106, and then connected to the shielding ground outside the safety shell through the socket 300. Specifically, since there is no safe shielding ground inside the safety shell. The shielding layer 102 is connected to the first pin 231 through the wire 106, and connected to the shielding ground outside the safety shell through the socket 300. The purpose of setting the shielding layer 102 is to prevent the conductor core wire 101 from being interfered by the electromagnetic radiation inside the safety shell.

[0105] In one embodiment, the conductor core 101 is made of a thermocouple conductor material or a copper conductor material, and the metal layer is a stainless steel layer. The conductor core 101 made of a thermocouple conductor material is suitable for connecting the instrument type in the containment to be a thermocouple thermometer. The conductor core 101 made of a copper conductor material is suitable for instruments other than thermocouple thermometers and limit switches.

[0106] In one embodiment, the number of the conductor core wires 101 is 2, 3, 4 or 8. The number of the conductor core wires 101 is determined according to the type of instrument connected. For conventional instruments in the containment, 2, 3 or 4 conductor core wires 101 can meet the needs, while for special instruments, 8 conductor core wires 101 are required. More preferably, if the number of the conductor core wires 101 is 2, 3 or 4, the cross-sectional area of ​​a single conductor core wire 101 is 1.5mm 2 If the number of conductor core wires 101 is 8, the cross-sectional area of ​​a single conductor core wire 101 is 1 mm 2 .

[0107] In one embodiment, the diameter of the first armored cable 100a and the second armored cable 100b is 10 mm ± 0.04 mm, and the thickness of the metal layer 104 is 0.6 mm to 0.7 mm, which basically ensures that the insulation resistance of the first armored cable 100a and the second armored cable 100b is greater than 1000 MΩ below 25°C and greater than 10 MΩ above 280°C.

[0108] In one embodiment, the first fixing seat 233, the first jack insulator 222, the first shell 232 in the plug 200, and the second fixing seat 323 of the socket 300 are made of 95% ceramic material. "95% ceramic" is a material with specific composition and characteristics, and its ceramic component accounts for 95% of the total. 95% ceramic has the same properties as silicon dioxide, such as high insulation resistance, high chemical stability and high temperature resistance. And the melting point of 95% ceramic is 1600℃. The use of 95% ceramic material can ensure that the insulation resistance of the first armored cable 100a and the second armored cable 100b is ≥1000MΩ at normal temperature (25℃), and ≥10MΩ at a high temperature of 280℃.

[0109] The manufacturing method of the connector assembly is described in detail below with reference to the accompanying drawings.

[0110] In the first step, the first housing 232, the first fixing seat 233, the first single-hole member 234 and the first pin 231 are sintered into one body, and the whole body is set in the plug housing assembly 210. The second housing 322, the second fixing seat 323, the second single-hole member 324 and the second pin 321 are sintered into one body, and installed in the socket housing assembly 310. The sintering process is to tightly combine multiple parts through high-temperature brazing, so that the helium mass spectrometer detection leakage rate can reach more than 1×10-9Pa•m³ / s.

[0111] In the second step, the first armored cable 100a is inserted into the first tightening nut 214 and the plug housing assembly 210 in turn, and the end of the conductor core wire 101 is crimped with the first pin 231 and then fixed by laser welding; the second armored cable 100b is inserted into the second tightening nut 313 and the socket housing assembly 310, and the end of the conductor core wire 101 is crimped with the second pin 321 and then fixed by laser welding. Auxiliary solder is added during welding to ensure that the welding is firm. It should be noted that the auxiliary solder is a non-organic material, which ensures that no organic material is used in the entire connector assembly manufacturing process, and there is no possibility of thermal aging mechanism being applied. Since the ambient temperature in the containment under abnormal conditions can reach more than 300° for a short time, the use of laser welding can avoid the occurrence of loose welding, cracked solder joints, etc.

[0112] In the third step, the first tightening nut 214 is tightened onto the plug tail cover, the two are threadedly matched and fixed, and the surface of the first armored cable 100a is fixed to the circumferential surface of the first tightening nut 214 by laser welding. The second tightening nut 313 is tightened onto the socket tail cover 312, the two are threadedly matched and fixed, and the surface of the second armored cable 100b is fixed to the circumferential surface of the second tightening nut 313 by laser welding. After welding, the surface is polished to remove the laser welding marks and enhance the aesthetics of the parts. Laser welding is used to form a sealed cavity inside the plug housing assembly 210 and the socket housing assembly 310, and it is difficult for high-temperature water vapor to enter the sealed cavity from the welding position, ensuring that the insulation performance of the exposed parts of the first armored cable 100a and the second armored cable 100b will not be reduced due to the increase of water vapor.

[0113] Preferably, during the manufacturing process of the first armored cable 100a and the second armored cable 100b, the silica material is first crushed and injected into the shielding layer 102 and between the shielding layer 102 and the metal layer 104. The metal layer 104 is stretched several times so that the silica particles in the shielding layer 102 can be tightly combined, and the silica material between the shielding layer 102 and the metal layer 104 forms an insulating layer 103 to ensure the excellent electrical properties of the first armored cable 100a and the second armored cable 100b. It should be noted that the laser welding operation is performed in the form of filling solder or not filling solder. In the laser welding of metal with an average thickness of 1mm, the welding part can withstand a pressure of more than 8MPa.

[0114] A high-temperature instrument connector assembly for a 1E-class nuclear power plant of the present invention uses a high-temperature resistant insulator and a high-temperature sintering method, and achieves the purpose of high-temperature resistance through multiple laser welding. The cable is a 1E-class mineral armored cable, all parts of the armored cable can be used in high temperatures and the cable insulator uses silicon dioxide, and the insulation performance can still meet the requirements at high temperatures. The combination of the armored cable and the plug also adopts laser welding, and the welding is not firm and the welding point cracking will not occur in a high-temperature environment. The connector assembly can meet the conditions of long-term working temperature of 282°C, abnormal accident temperature above 300°C and 6.2Mpa environmental pressure. At the same time, the connector assembly can also pass low temperature, high temperature, temperature change, vibration, impact, chemical flooding and radiation resistance tests.

[0115] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A connector assembly, suitable for high temperature instruments in the containment of a nuclear power plant, comprising: The first armored cable (100a) and the second armored cable (100b) respectively comprise a conductor core wire (101), a shielding layer (102), an insulating layer (103) and a metal layer (104) which are sequentially stacked from the inside to the outside along the radial direction thereof, and the shielding layer (102) is filled with an insulating material (105) to wrap the conductor core wire (101); A plug (200) comprising a plug housing assembly (210), a jack assembly (220) and a first pin assembly (230), wherein the jack assembly (220) is arranged at the head end of the plug housing assembly (210), the first pin assembly (230) is arranged in the plug housing assembly (210) and comprises a first pin (231), the head end of the first pin (231) is inserted into the jack assembly (220), one end of the first armored cable (100a) extends into the plug housing assembly (210), and the conductor core wire (101) of the first armored cable (100a) is crimped to the tail end of the first pin (231) and then fixed by laser welding, the plug housing assembly (210) comprises a first tightening nut (214), and the surface of the first armored cable (100a) is fixed to the first tightening nut (214) by laser welding; A socket (300) comprises a socket housing assembly (310) and a second pin assembly (320), wherein the second pin assembly (320) is combined with the socket housing assembly (310) to have a second pin (321), one end of the second armored cable (100b) extends into the socket housing assembly (310), the conductor core wire (101) of the second armored cable (100b) and the tail end of the second pin (321) are crimped and then fixed by laser welding, the socket housing assembly (310) comprises a second tightening nut (313), and the surface of the second armored cable (100b) and the second tightening nut (313) are fixed by laser welding; The plug is plugged into and matched with the socket so that the head end of the second pin (321) is inserted into the socket assembly (220); Wherein, the insulating layer (103) is made of silicon dioxide, and the insulating material (105) is silicon dioxide; The shielding layer (102) is a copper tube, and the shielding layer (102) is connected to a shielding ground outside the containment shell through the socket; The conductor core wire (101) is made of a thermocouple conductor material or a copper conductor material, and the metal layer (104) is a stainless steel layer.

2. The connector assembly according to claim 1, wherein: The plug housing assembly (210) comprises a connecting nut (211), a locking ring (212) and a plug tail cover (213); the connecting nut (211) is fixedly engaged with the head of the plug tail cover (213) via the locking ring (212); and the first tightening nut (214) is fixedly engaged with the end of the plug tail cover (213) via threads.

3. The connector assembly according to claim 1, wherein: The jack assembly (220) comprises a plug connector (221), a first jack insulator (222), a double jack member (223) and a first jack insulator cover plate (224); the first jack insulator is arranged in the plug connector (221); one end of the double jack member (223) extends into the first jack insulator, and the other end extends into the first jack insulator cover plate (224).

4. The connector assembly according to claim 3, wherein: The first pin assembly (230) further comprises a first shell (232), a first fixing seat (233) and a first single socket member (234); the first fixing seat (233) is arranged in the first shell (232) and is opposite to the first socket insulator cover plate (224); the first single socket member (234) is arranged in the first fixing seat (233); the first pin (231) is arranged in the first single socket member (234) and is partially inserted into the double socket member (223).

5. The connector assembly according to claim 4, wherein: The first housing (232), the first fixing seat (233), the first single-hole component (234) and the first plug pin (231) are sintered into one body.

6. The connector assembly according to claim 1, wherein: The socket housing assembly (310) further comprises a socket tail cover (312), and the second tightening nut (313) is threadably matched and fixed to an end portion of the socket tail cover (312).

7. The connector assembly according to claim 6, wherein: The second pin assembly (320) further comprises a second shell (322), a second fixing seat (323) and a second single socket member (324); the second shell (322) is pluggably engaged with the head of the socket tail cover (312); the second fixing seat (323) is disposed in the second shell (322); the second single socket member (324) is disposed in the second fixing seat (323); the second pin (321) is partially disposed in the second single socket member (324) and partially exposed in the second shell (322).

8. The connector assembly according to claim 7, wherein: The second shell (322), the second fixing seat (323), the second single-hole component (324) and the second plug pin (321) are sintered into one body.

9. The connector assembly according to claim 1, wherein: The diameter of the first armored cable and the second armored cable (100b) is 10 mm ± 0.04 mm, the thickness of the metal layer (104) is 0.6 mm to 0.7 mm, and the insulation resistance of the first armored cable and the second armored cable is greater than 1000 MΩ below 25°C and greater than 10 MΩ above 280°C.

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