CN220544339U - High-low frequency hybrid watertight connector and cable for nuclear power environment - Google Patents

Abstract

The utility model provides a high-low frequency hybrid watertight connector and a cable for a nuclear power environment, and relates to the technical field of connectors. The socket comprises a first connector, a second connector and a first connecting rod, wherein the first connector comprises a first insulating seat arranged in a socket shell, a radio frequency hole head assembly and at least two low-frequency contact pin assemblies are arranged in the first insulating seat; one end of the first connector, which can be spliced with the second connector, is provided with external threads on the surface; the second connector comprises a second insulating seat arranged in the plug shell, and a radio frequency needle head assembly and at least two low-frequency jack assemblies are arranged in the second insulating seat; the second connector is provided with a connecting nut; the second connector is located the coupling nut and is equipped with first O type sealing washer. The high-frequency signal wires and the low-frequency signal wires are integrated, so that the number of cables required can be reduced, the cable layout is simplified, the complexity and the cost of the system are reduced, the maintainability and the reliability of the system can be improved by reducing the number of the cables, and the system can be adapted to signal transmission of underwater operation in a nuclear power environment.

Description

High-low frequency hybrid watertight connector and cable for nuclear power environment

Technical Field

The utility model relates to the technical field of connectors, in particular to a high-low frequency hybrid watertight connector and a cable for a nuclear power environment.

Background

With the continuous improvement of the technology level, the application of electronic devices is becoming wider and wider, and the connector is developed accordingly, so as to provide power supply, communication and the like for the electronic devices, which becomes one of important and necessary accessories of the electronic devices and products.

Electronic devices are increasingly being used for underwater operations, and such electronic devices as underwater robots require connectors and cables to transmit signals to achieve detection and operational control, and the connector requirements are different due to the depth of water and different underwater environments.

In the current underwater environment, the connectors and cables used generally transmit high-frequency signals and low-frequency signals separately so as to prevent mutual interference, for example, video signals and control signals are respectively high-frequency signals and low-frequency signals, and the video signals and the control signals are generally transmitted by dividing the video signals and the control signals into two or more lines in the prior art, so that a plurality of connectors and a plurality of lines exist, on one hand, the more the cables and the connectors, the more the possibility of winding is, and on the other hand, the probability of damaging the cables is also increased; in addition, in a nuclear power environment, the underwater environment still has strong radiation, so that the connector and the cable are easy to age, and particularly, the joint of the connector and the cable is a position which is relatively easy to damage; therefore, the utility model provides a high-low frequency hybrid watertight connector and a cable for a nuclear power environment, which at least partially solve the possible problems in the prior art.

Disclosure of Invention

The utility model aims to provide a high-low frequency hybrid watertight connector and a cable for a nuclear power environment, which can solve the problem that the high-low frequency connector and the cable are arranged separately aiming at the defects of the prior art, integrate high-frequency interfaces and low-frequency interfaces into the same connector, realize the integration of high-frequency signal wires and low-frequency signal wires, reduce the number of cables required, simplify the cable layout, reduce the complexity and the cost of a system, reduce the number of cables and improve the maintainability and the reliability of the system.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a high and low frequency hybrid watertight connector for a nuclear power environment, comprising:

the first connector and the second connector can be spliced;

the first connector comprises a first insulating seat arranged in the socket shell; a radio frequency hole head assembly and at least two low-frequency pin assemblies are arranged in the first insulating seat; one end of the first connector, which can be spliced with the second connector, is provided with external threads on the surface;

the second connector comprises a second insulating seat arranged in the plug shell; a radio frequency needle head assembly and at least two low frequency jack assemblies are arranged in the second insulating seat; wherein the radio frequency hole head assembly corresponds to the radio frequency needle head assembly, and the low frequency contact pin assembly corresponds to the low frequency jack assembly; a connecting nut is arranged at one end of the second connector opposite to the first connector; the second connector is located at the tail end position in the connecting nut and is further provided with a first O-shaped sealing ring.

In the utility model, the first connector further comprises a second O-ring at the joint of the socket housing and the first insulating base.

Further, in the present utility model, the first connector further includes a protrusion disposed at a middle portion of the socket housing; a first groove body is arranged on one side of the bulge, which is opposite to the external thread, and a third O-shaped sealing ring is arranged in the first groove body; the socket shell is located one side of the third O-shaped sealing ring and is further provided with a second groove body, and four O-shaped sealing rings are arranged in the second groove body.

Further, in the utility model, the end of the socket shell, which is opposite to one side of the external thread, is also provided with a first rivet and a clamping spring; the first rivet penetrates through the socket shell and is fixedly connected with the first insulating seat; the clamp spring is positioned in the socket shell and faces the first insulating seat. Further, in the present utility model, the second connector further includes: a second rivet; the second rivet penetrates through the plug shell and is fixedly connected with the second insulating seat.

Further, in the present utility model, the second connector further includes: the plug comprises a plug shell, a first bushing, a second bushing, a wire locking mechanism, a cable sealing ring and a compression ring, wherein the first bushing, the second bushing, the wire locking mechanism, the cable sealing ring and the compression ring are positioned inside the plug shell;

the first bushing and the second bushing are symmetrically arranged; the wire locking mechanism is positioned at the tail ends of the first bushing and the second bushing; the cable sealing ring is arranged at the tail end of the wire locking mechanism; the tail end of the cable sealing ring is provided with the pressing ring which is in butt joint with the inside of the lock nut, wherein the lock nut is connected with the tail end of the plug shell through threads in an adjustable mode.

Further, in the present utility model, the thread locking mechanism includes a first kevlar locking nut and a second kevlar locking nut; the first Kevlar locking nut is sleeved on the outer side of the second Kevlar locking nut; and the second Kevlar locking nut is connected with the front end of the cable sealing ring.

In the present utility model, the second connector is further sleeved with an encapsulation body at one side of the connecting nut, and the encapsulation body at least partially encapsulates the cable.

Further, in the present utility model, the low frequency pin assembly and the low frequency socket assembly are made of copper alloy gold plating.

A high-low frequency hybrid cable comprising the high-low frequency hybrid watertight connector for a nuclear power environment described above; a shielding layer is arranged in the high-low frequency mixed cable; the shielding layer is internally coated with a radio frequency wire and a low frequency signal wire; the radio frequency cord is electrically connected to a radio frequency needle assembly within the high and low frequency hybrid watertight connector, and the low frequency signal cord is electrically connected to a low frequency jack assembly.

The utility model has at least the following advantages or beneficial effects:

the first connector comprises a first insulating seat arranged in the socket shell, wherein a radio frequency hole head assembly and at least two low-frequency contact pin assemblies are arranged in the first insulating seat; one end of the first connector, which can be spliced with the second connector, is provided with external threads on the surface; the second connector comprises a second insulating seat arranged in the plug shell, and a radio frequency needle head assembly and at least two low-frequency jack assemblies are arranged in the second insulating seat; the second connector is provided with a connecting nut; the second connector is located the coupling nut and is equipped with first O type sealing washer. The high-frequency signal wires and the low-frequency signal wires are integrated, so that the number of cables required can be reduced, the cable layout is simplified, the complexity and the cost of the system are reduced, the maintainability and the reliability of the system can be improved by reducing the number of the cables, and the system can be adapted to signal transmission of underwater operation in a nuclear power environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic cross-sectional view of a first connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of a first connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a first connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

fig. 4 is a schematic cross-sectional view of a second connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of the external structure of a second connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a front view structure of a second connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model;

fig. 7 is a schematic view of a perspective view of a second connector of a high-low frequency hybrid watertight connector for a nuclear power environment according to an embodiment of the present utility model.

In the figure, 1, a first connector; 2. a second connector; 101. a radio frequency orifice head assembly; 102. a socket housing; 103. a low frequency pin assembly; 104. a second O-ring seal; 105. a third O-ring seal; 106. a fourth O-ring seal; 107. a first rivet; 108. clamping springs; 109. a first insulating base; 201. a low frequency jack assembly; 202. a second insulating base; 203. a coupling nut; 204. a first O-ring seal; 205. a second rivet; 206. a plug housing; 207. a radio frequency needle assembly; 208. a first bushing; 209. a second bushing; 210. the first Kevlar tightening nut; 211. the first Kevlar tightening nut; 212. a cable sealing ring; 213. a compression ring; 214. a lock nut; 215. a colloid; 216. a cable.

Detailed Description

In order that the manner in which the above recited objects, features and advantages of the present utility model are obtained will become more readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to the appended drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 to 7, there is shown that the present embodiment provides a high-low frequency hybrid watertight connector for a nuclear power environment, comprising: 1. the high-low frequency hybrid watertight connector for the nuclear power environment is characterized by comprising a first connector 1 and a second connector 2 which can be spliced; the first connector 1 includes a first insulating seat 109 disposed within the socket housing 102; the first insulating seat 109 is provided with a rf hole head assembly 101 and at least two low-frequency pin assemblies 103; one end of the first connector 1, which can be inserted with the second connector 2, is provided with external threads on the surface; the second connector 2 includes a second insulating base 202 disposed within a plug housing 206; the second insulating base 202 is provided with a radio frequency needle assembly 207 and at least two low frequency jack assemblies 201; wherein the rf hole head assembly 101 corresponds to the rf needle assembly 207 and the low frequency pin assembly 103 corresponds to the low frequency jack assembly 201; a connecting nut 203 is arranged at one end of the second connector 2 opposite to the first connector 1; the second connector 2 is located at the end position in the connecting nut 203, and is further provided with a first O-ring 204. In connection, the first connector 1 and the second connector 2 are abutted, the first connector 1 and the second connector are connected by the connection nut 203 and the external screw thread, and the connection position of the connectors is sealed by the first O-ring 204. Through the structure, the high-frequency radio frequency signal wire and the low-frequency common data wire are integrated in one connector, so that the number of cables is reduced, and particularly, on one hand, the number of cables required can be reduced by integrating the high-frequency signal wire and the low-frequency signal wire, the cable layout is simplified, and the complexity and the cost of a system are reduced. Particularly in limited space or where a large number of signal transmissions are required, reducing the number of cables may improve maintainability and reliability of the system. On the other hand, by integrating the high-frequency and low-frequency signal lines together, problems of interference and crosstalk can be avoided; in the isolated lines, the high-frequency signals may interfere with the low-frequency signals, and integrating them together can reduce the interference and improve the transmission efficiency and quality of the signals; on the other hand, space can be saved by integrating high-frequency and low-frequency signal lines, especially in applications with limited space, such as electronic devices, communication systems, network devices, etc. Compared with independent high-frequency and low-frequency circuits, the integrated circuit can be more compactly laid out and installed, and the overall performance of the system is improved; in yet another aspect, integrating high frequency and low frequency signal lines can simplify the design and installation process of the system, and by using a set of cables, the connection and configuration of different lines can be reduced, reducing the complexity of the design, and simplifying the wiring and maintenance work.

It should be noted that the high-low frequency hybrid watertight connector in the application is used for nuclear power environment, is particularly used for signal connection of underwater robots, and can be 300-400 m deep in heavy water environment to keep the watertightness of the high-low frequency hybrid watertight connector through testing.

Example 2

The embodiment provides a high-low frequency hybrid watertight connector for a nuclear power environment, wherein the first connector 1 further comprises a second O-shaped sealing ring 104 at the joint of the socket housing 102 and the first insulating seat 109; the first connector 1 further comprises a protrusion arranged at the middle part of the socket housing 102; a first groove body is arranged on one side of the bulge, which is opposite to the external thread, and a third O-shaped sealing ring 105 is arranged in the first groove body; the socket housing 102 is further provided with a second groove body at one side of the third O-shaped sealing ring 105, and four O-shaped sealing rings 106 are arranged in the second groove body; the first connector 1 is arranged on an underwater device, such as an underwater robot; the second O-ring 104 thereon provides the socket housing 102 and the first insulating base 109 with good water tightness and air tightness, so that the two ends of the first connector 1 have good sealing performance; by means of the third O-ring 105 and the fourth O-ring 106, the end is mounted on the equipment end, for example, the end can be mounted on a robot working under water in the application, and the water tightness between the joint and the equipment is guaranteed by means of the two sealing rings, so that the equipment can work normally under water in an environment of 300-400 m.

It should be noted that, in a general nuclear power environment, the underwater environment is about 100m, and through the interference design of guaranteeing the water tightness of the device at 300-400 m, the workplace with the depth of about 100m in the nuclear power environment is guaranteed, and the device and the cable cannot be water-in from the connector position to cause signal failure or device damage.

As a preferred embodiment, the end of the socket housing 102 facing away from the external thread is further provided with a first rivet 107 and a clamping spring 108; the first rivet 107 penetrates through the socket housing 102 and is fixedly connected with the first insulating base 109; the snap spring 108 is located in the socket housing 102 and faces the first insulating seat 109. The first rivet 107 enables the first insulating base 109 and the socket housing 102 to be kept in a relatively stationary state all the time, and the clamp spring 108 enables the cable in the device to be connected with the first connector 1 in a more stable manner.

Example 3

A high-low frequency hybrid watertight connector for nuclear power environments, comprising the second connector 2 further comprising: a second rivet 205; the second rivet 205 penetrates the plug housing 206 and is fixedly connected to the second insulating base 202.

The second connector 2 further comprises: a first bushing 208, a second bushing 209, a wire locking mechanism, a cable seal 212 and a compression ring 213 located inside the plug housing 206, a lock nut 214 located outside the plug housing 206; the first bushing 208 and the second bushing 209 are symmetrically arranged; the lockwire mechanism is located at the ends of the first and second bushings 208, 209; the tail end of the wire locking mechanism is provided with the cable sealing ring 212; the end of the cable seal 212 is provided with the pressing ring 213, which is abutted against the inside of the locking nut 214, wherein the locking nut 214 is adjustably connected to the end of the plug housing 206 through threads.

Providing a stable connection for the second insulating base 202 by the second rivet 205, preventing the insulating base from sliding or displacing when the first connector 1 and the second connector 2 are in butt joint; the wire connected to the second connector 2 is fastened by the first bushing 208, the second bushing 209, the wire locking mechanism, the cable sealing ring 212 and the pressing ring 213, and has good sealing performance with the connector.

As a preferred embodiment, the lockwire mechanism includes a first kevlar lock nut 210 and a second kevlar lock nut 211; wherein, the first kevlar locking nut 210 is sleeved on the outer side of the second kevlar locking nut 211; the second kevlar locking nut 211 is connected to the front end of the cable seal ring 212. Through two Kevlar locking nuts, because it adopts special design and structure, make it can provide the locking effect of high strength, through the Kevlar packing ring on the torsion nut, produce reverse force, make the nut fasten on the screw thread, prevent not hard up. Meanwhile, the nut has good loosening prevention and self-locking characteristics, and when the nut is subjected to vibration or impact, friction force opposite to the thread direction can be generated due to elastic deformation of the Kevlar washer, so that the loosening of the nut is prevented; the nut can be reused without replacing or adding additional locking elements, and only the fastening degree of the nut is checked and adjusted timely. In addition, the design and the structure can avoid using extra nut sheets or gaskets, and reduce the number and complexity of parts, so that the installation process is simplified, and the cost is saved; the material is made of corrosion-resistant materials, can be used in a severe working environment, and has good chemical corrosion resistance.

As a preferred embodiment, the second connector 2 is located at one side of the connection nut 203, and is further sleeved with an encapsulating body 215, and the encapsulating body 215 at least partially encapsulates the cable 216, where the aforementioned Bao Jiaoti is made of 3M vulcanized rubber. The 3M vulcanized rubber is made into the colloid 215 from vulcanized rubber, has excellent high temperature resistance, can keep stable performance in a high-temperature environment, is not easy to soften or melt, and is suitable for high-temperature application scenes. The vulcanized rubber has good electrical insulation performance, can effectively isolate and protect the connector, has higher resistance value and insulation strength, can prevent current leakage and circuit faults, and improves the reliability of equipment. Because the vulcanized rubber has stronger corrosion resistance in various chemical substances, the vulcanized rubber can resist corrosion of acid, alkali, solvent and other chemical substances, so that the vulcanized rubber encapsulation body is suitable for an environment needing to resist chemical corrosion, and can provide reliable protection, and the vulcanized rubber encapsulation body can improve the ageing resistance of joints and wires in the environment with stronger radiation. The encapsulation 215 also has flexibility and elasticity that provides good wear and impact resistance, so that the joint can protect the surface of the object under vibration, impact, physical friction, etc., and reduce wear and damage.

As a preferred embodiment, the low frequency pin assembly 103 and the low frequency socket assembly 201 are made of copper alloy gold plating. The gold plating is gold (Au), and the gold (Au) is biased to inert metal, so that when the connector is used in a strong radiation environment in a nuclear power occasion, the quick aging of conductors in the connector is avoided, and the service life of the connector is prolonged.

In one embodiment, a high-low frequency hybrid watertight connector for a nuclear power environment comprises a pluggable first connector 1 and a second connector 2; the first connector 1 comprises a socket housing 102 made of stainless steel, preferably 316L stainless steel, and a first insulating seat 109 made of PPS material provided in the socket housing 102; a radio frequency hole head assembly 101 is arranged in the first insulating seat 109, wherein the radio frequency hole head assembly 101 is composed of an outer shielding layer and a high frequency jack therein, and 7 groups of copper alloy gold-plated low frequency pin assemblies 103; one end of the first connector 1, which can be inserted with the second connector 2, is provided with external threads on the surface;

the second connector 2 comprises a plug housing 206 made of stainless steel, and 316L stainless steel can be used for better effect; a second insulating seat 202 provided in the plug housing 206 and made of PPS; a radio frequency needle assembly 207 is arranged in the second insulating seat 202 and corresponds to the radio frequency hole head assembly 101, and 7 groups of low frequency jack assemblies 201 which are made of the same material and correspond to the low frequency pin assemblies 103 in position; a connecting nut 203 is arranged at one end of the second connector 2 opposite to the first connector 1; the second connector 2 is located at the end position in the connecting nut 203, and is further provided with a first O-ring 204. The O-shaped sealing rings are preferably made of nitrile rubber (70 degrees), wherein the nitrile rubber (70 degrees) has good heat resistance, weather resistance, mechanical property, chemical stability and electrical insulation property.

The socket housing 102 is preferably made of 316L stainless steel, and is further provided with a first rivet 107 and a snap spring 108 made of stainless steel at the end facing away from the side of the external thread, wherein 304 stainless steel is preferably used. The second rivet 205 penetrates the plug housing 206 and is fixedly connected to the second insulating base 202.

The second connector 2 further comprises: a first bushing 208, a second bushing 209 and a wire locking mechanism made of brass alloy and positioned inside the plug housing 206, and cable sealing rings 212 and 316L stainless steel compression rings 213 made of silicone rubber, and 316L stainless steel locking nuts 214 positioned outside the plug housing 206; the first bushing 208 and the second bushing 209 are symmetrically arranged; the lockwire mechanism is located at the ends of the first and second bushings 208, 209; the tail end of the wire locking mechanism is provided with the cable sealing ring 212; the end of the cable seal 212 is provided with the pressing ring 213, which is abutted against the inside of the locking nut 214, wherein the locking nut 214 is adjustably connected to the end of the plug housing 206 through threads.

Example 4

The embodiment provides a high-low frequency hybrid cable, which comprises the high-low frequency hybrid watertight connector for nuclear power environment; the high-low frequency mixed cable is internally provided with a radio frequency wire and a low frequency signal wire; the radio frequency wire is electrically connected to a radio frequency needle assembly 207 within the high and low frequency hybrid watertight connector, and the low frequency signal wire is electrically connected to a low frequency jack assembly 201.

The high-low frequency mixed cable provided by the utility model can reduce the number of cables required by integrating high-frequency and low-frequency signal wires, simplify the cable layout, reduce the complexity and cost of the system, and especially can improve the maintainability and reliability of the system by reducing the number of the cables in a limited space or in an occasion needing a large amount of signal transmission, and simultaneously can adapt to the signal transmission of underwater operation in a nuclear power environment.

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

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the utility model.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The utility model has been described in detail with reference to the high-low frequency hybrid watertight connector and cable for nuclear power environment, and specific examples are applied to illustrate the principles and embodiments of the utility model, and the description of the above examples is only for helping to understand the method and core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims (10)

1. The high-low frequency hybrid watertight connector for the nuclear power environment is characterized by comprising a first connector and a second connector which can be spliced;

the first connector comprises a first insulating seat arranged in the socket shell; a radio frequency hole head assembly and at least two low-frequency pin assemblies are arranged in the first insulating seat; one end of the first connector, which can be spliced with the second connector, is provided with external threads on the surface;

the second connector comprises a second insulating seat arranged in the plug shell; a radio frequency needle head assembly and at least two low frequency jack assemblies are arranged in the second insulating seat; wherein the radio frequency hole head assembly corresponds to the radio frequency needle head assembly, and the low frequency contact pin assembly corresponds to the low frequency jack assembly; a connecting nut is arranged at one end of the second connector opposite to the first connector; the second connector is located at the tail end position in the connecting nut and is further provided with a first O-shaped sealing ring.

2. The high-low frequency hybrid watertight connector of claim 1 wherein the first connector further comprises a second O-ring at the junction of the socket housing and the first insulator seat.

3. The high-low frequency hybrid watertight connector according to claim 1 or 2, wherein the first connector further comprises a protrusion provided at a middle portion of the socket housing; a first groove body is arranged on one side of the bulge, which is opposite to the external thread, and a third O-shaped sealing ring is arranged in the first groove body; the socket shell is located one side of the third O-shaped sealing ring and is further provided with a second groove body, and four O-shaped sealing rings are arranged in the second groove body.

4. The high-low frequency hybrid watertight connector according to claim 1 or 2, wherein the socket housing is provided with a first rivet and a snap spring at an end facing away from the side of the external thread; the first rivet penetrates through the socket shell and is fixedly connected with the first insulating seat; the clamp spring is positioned in the socket shell and faces the first insulating seat.

5. The high-low frequency hybrid watertight connector according to claim 1, wherein the second connector further comprises: a second rivet; the second rivet penetrates through the plug shell and is fixedly connected with the second insulating seat.

6. The high-low frequency hybrid watertight connector of claim 5 wherein the second connector further comprises: the plug comprises a plug shell, a first bushing, a second bushing, a wire locking mechanism, a cable sealing ring and a compression ring, wherein the first bushing, the second bushing, the wire locking mechanism, the cable sealing ring and the compression ring are positioned inside the plug shell;

the first bushing and the second bushing are symmetrically arranged; the wire locking mechanism is positioned at the tail ends of the first bushing and the second bushing; the cable sealing ring is arranged at the tail end of the wire locking mechanism; the tail end of the cable sealing ring is provided with the pressing ring which is in butt joint with the inside of the lock nut, wherein the lock nut is connected with the tail end of the plug shell through threads in an adjustable mode.

7. The high-low frequency hybrid watertight connector of claim 6 wherein the lockwire mechanism comprises a first kevlar locking nut and a second kevlar locking nut; the first Kevlar locking nut is sleeved on the outer side of the second Kevlar locking nut; and the second Kevlar locking nut is connected with the front end of the cable sealing ring.

8. The high-low frequency hybrid watertight connector according to claim 6, wherein the second connector is located at one side of the connecting nut, and is further sleeved with an encapsulation body, and the encapsulation body at least partially encapsulates the cable.

9. The high and low frequency hybrid watertight connector of claim 1 wherein the low frequency pin assemblies and the low frequency socket assemblies are made of copper alloy gold plating.

10. A high-low frequency hybrid cable comprising a high-low frequency hybrid watertight connector for a nuclear power environment as claimed in any one of claims 1 to 9; a shielding layer is arranged in the high-low frequency mixed cable; the shielding layer is internally coated with a radio frequency wire and a low frequency signal wire; the radio frequency cord is electrically connected to a radio frequency needle assembly within the high and low frequency hybrid watertight connector, and the low frequency signal cord is electrically connected to a low frequency jack assembly.