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

Abstract

The invention provides a high and low frequency hybrid watertight connector for a nuclear power environment and a cable, and relates to the technical field of connectors. Comprising a first insulating seat arranged in a socket shell, and a radio frequency hole head assembly and at least two low-frequency pin assemblies are arranged in the first insulating seat; external threads are arranged on the surface of one end, which can be spliced with the second connector, of the first connector; 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; and the second connector is provided with a first O-shaped sealing ring in the connecting nut. By integrating the high-frequency signal line and the low-frequency signal line, the number of required cables 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 meanwhile, the system can adapt to signal transmission of underwater operation in a nuclear power environment.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and more particularly, to a high-low frequency hybrid watertight connector and cable for a nuclear power environment. Background Art

[0002] With the continuous improvement of the technological level, the application of electronic devices is becoming more and more extensive. Subsequently, connectors have been developed to provide power supply, communication, etc. for electronic devices, and have become one of the important and necessary accessories for electronic devices and products.

[0003] Electronic devices are also increasingly used in underwater work. These electronic devices, such as underwater robots, need to use connectors and cables to transmit signals to achieve detection and operation control. Due to the water depth and different underwater environments, the requirements for connectors are also different.

[0004] In the current underwater environment, the connectors and cables used generally transmit high-frequency signals and low-frequency signals separately to prevent interference between them. For example, video signals and control signals are high-frequency signals and low-frequency signals respectively. In the prior art, they are generally transmitted through two or more lines. In this way, there will be multiple connectors and multiple lines. On the one hand, the more cables and connectors there are, the greater the possibility of entanglement. On the other hand, the probability of cable damage will also increase; moreover, in a nuclear power environment, the underwater environment still has strong radiation, which makes the connectors and cables prone to aging, especially the joints between the connectors and the cables, which are relatively vulnerable positions; therefore, the present invention proposes a high-low frequency hybrid watertight connector and cable for a nuclear power environment to at least partially solve the problems that may exist in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-low frequency hybrid watertight connector and cable for a nuclear power environment, which can propose a solution for the deficiencies of the prior art, solve the problem of separate setting of high-low frequency connectors and cables, integrate high-frequency and low-frequency interfaces in the same connector in this application, realize the integration of high-frequency and low-frequency signal lines, reduce the number of required cables, simplify the cable layout, reduce the complexity and cost of the system, and reducing the number of cables can improve the maintainability and reliability of the system.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A high-low frequency hybrid watertight connector for a nuclear power environment, comprising:

[0008] Pluggable first connector and second connector;

[0009] The first connector includes a first insulating seat disposed within the socket housing; within the first insulating seat, there is a radio frequency pin assembly and at least two low-frequency pin assemblies; at one end of the first connector that can be plugged into the second connector, an external thread is provided on its surface.

[0010] The second connector includes a second insulating seat disposed within the plug housing; within the second insulating seat, there is a radio frequency needle assembly and at least two low-frequency jack assemblies; wherein, the radio frequency pin assembly corresponds to the radio frequency needle assembly, and the low-frequency pin assemblies correspond to the low-frequency jack assemblies; at one end of the second connector opposite to the first connector, a connecting nut is provided; at the end position of the second connector within the connecting nut, a first O-ring is further provided.

[0011] Further, in the present invention, the first connector further includes that a second O-ring is provided at the connection between the socket housing and the first insulating seat.

[0012] Further, in the present invention, the first connector further includes that a protrusion is provided in the middle of the socket housing; on one side of the protrusion opposite to the external thread, a first groove is provided, and a third O-ring is provided within the first groove; on one side of the socket housing where the third O-ring is located, a second groove is provided, and a fourth O-ring is provided within the second groove.

[0013] Further, in the present invention, at the end of the socket housing on the side opposite to the external thread, a first rivet and a snap ring are further provided; the first rivet penetrates the socket housing and is fixedly connected to the first insulating seat; the snap ring is located within the socket housing and faces the first insulating seat. Further, in the present invention, the second connector further includes: a second rivet; the second rivet penetrates the plug housing and is fixedly connected to the second insulating seat.

[0014] Further, in the present invention, the second connector further includes: a first bushing, a second bushing, a wire locking mechanism, a cable sealing ring, and a compression ring located inside the plug housing, and a locking nut located outside the plug housing;

[0015] The first bushing and the second bushing are symmetrically arranged; the wire locking mechanism is located at the ends of the first bushing and the second bushing; at the end of the wire locking mechanism, the cable sealing ring is provided; at the end of the cable sealing ring, the compression ring is provided and abuts against the inside of the locking nut, wherein the locking nut is threadedly and adjustably connected to the end of the plug housing.

[0016] Further, in the present invention, the above-mentioned wire stitching mechanism includes a first Kevlar lock nut and a second Kevlar lock nut; wherein, the first Kevlar lock nut is sleeved outside the second Kevlar lock nut; the second Kevlar lock nut is connected to the front end of the cable sealing ring.

[0017] Further, in the present invention, the above-mentioned second connector is located on one side of the connection nut and is also sleeved with a jacket body, and at least part of the jacket body wraps the cable.

[0018] Further, in the present invention, the above-mentioned low-frequency pin assembly and the low-frequency jack assembly are made of copper alloy plated with gold.

[0019] A high-low frequency hybrid cable, the high-low frequency hybrid cable includes the above-mentioned high-low frequency hybrid waterproof connector for nuclear power environment; the high-low frequency hybrid cable has a shielding layer inside; a radio frequency cable and a low-frequency signal cable are covered inside the shielding layer; the radio frequency cable is electrically connected to the radio frequency pin assembly in the high-low frequency hybrid waterproof connector, and the low-frequency signal cable is electrically connected to the low-frequency jack assembly.

[0020] The present invention has at least the following advantages or beneficial effects:

[0021] The first connector includes a first insulating seat disposed inside the socket housing, which is provided with a radio frequency hole head assembly and at least two low-frequency pin assemblies; one end of the first connector that can be inserted into the second connector has an external thread on its surface; the second connector includes a second insulating seat disposed inside the plug housing, which is provided with a radio frequency pin assembly and at least two low-frequency jack assemblies; the second connector is provided with a connection nut; the second connector is provided with a first O-ring inside the connection nut. By integrating high-frequency and low-frequency signal cables, the number of required cables can be reduced, the cable layout can be simplified, the complexity and cost of the system can be reduced, and reducing the number of cables can improve the maintainability and reliability of the system, and at the same time enable it to adapt to signal transmission in underwater operations in the nuclear power environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic cross-sectional structure diagram of a first connector of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0024] Figure 2Schematic diagram of the front view of the first connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the three-dimensional view of the first connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the sectional structure of the second connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the external structure of the second connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the front view of the second connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the three-dimensional view of the second connector head of a high-low frequency hybrid waterproof connector for nuclear power environment provided by an embodiment of the present invention.

[0030] In the figure, 1 is the first connector head; 2 is the second connector head; 101 is the RF pin head assembly; 102 is the socket housing; 103 is the low-frequency pin assembly; 104 is the second O-ring; 105 is the third O-ring; 106 is the fourth O-ring; 107 is the first rivet; 108 is the snap ring; 109 is the first insulating seat; 201 is the low-frequency jack assembly; 202 is the second insulating seat; 203 is the connecting nut; 204 is the first O-ring; 205 is the second rivet; 206 is the plug housing; 207 is the RF needle head assembly; 208 is the first bushing; 209 is the second bushing; 210 is the first Kevlar lock nut; 211 is the first Kevlar lock nut; 212 is the cable sealing ring; 213 is the compression ring; 214 is the lock nut; 215 is the encapsulation body; 216 is the cable. Detailed implementation manners

[0031] To make the objectives, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Please refer to Figures 1 to 7 Figures 1 to 7 , which shows a high-low frequency hybrid waterproof connector for nuclear power environment provided by this embodiment. It includes: 1. A high-low frequency hybrid waterproof connector for nuclear power environment, characterized in that it includes a pluggable first connector 1 and a second connector 2; the first connector 1 includes a first insulating seat 109 disposed within a socket housing 102; within the first insulating seat 109, there is provided a radio frequency pin assembly 101 and at least two low-frequency pin assemblies 103; at one end of the first connector 1 that can be plugged into the second connector 2, its surface is provided with an external thread; the second connector 2 includes a second insulating seat 202 disposed within a plug housing 206; within the second insulating seat 202, there is provided a radio frequency needle assembly 207 and at least two low-frequency jack assemblies 201; wherein, the radio frequency pin assembly 101 corresponds to the radio frequency needle assembly 207, and the low-frequency pin assemblies 103 correspond to the low-frequency jack assemblies 201; at one end of the second connector 2 opposite to the first connector 1, there is provided a connection nut 203; at the end position of the second connector 2 within the connection nut 203, there is further provided a first O-ring 204. During connection, the above-mentioned first connector 1 and second connector 2 are docked, and through the above-mentioned connection nut 203, in cooperation with the above-mentioned external thread, the above-mentioned first connector 1 and the above-mentioned second connector are connected, and through the first O-ring 204, a seal is formed at the connection position of the connectors. Through the above structure, high-frequency radio frequency signal lines and low-frequency ordinary data lines are integrated into one connector, reducing the number of cables. Specifically, on the one hand, by integrating high-frequency and low-frequency signal lines, the number of cables required can be reduced, the cable layout can be simplified, and the complexity and cost of the system can be reduced. Especially in a limited space or in occasions where a large amount of signal transmission is required, reducing the number of cables can improve the maintainability and reliability of the system. On the other hand, by integrating high-frequency and low-frequency signal lines together, the problems of interference and crosstalk can be avoided; in independent and isolated lines, high-frequency signals may interfere with low-frequency signals, while integrating them together can reduce this interference and improve the signal transmission efficiency and quality; furthermore, by integrating high-frequency and low-frequency signal lines, space can be saved, especially in applications with limited space, such as electronic devices, communication systems, and network devices, etc. Compared with independent high-frequency and low-frequency lines, the integrated lines can be more compactly laid out and installed, improving the overall performance of the system; furthermore, integrating high-frequency and low-frequency signal lines can simplify the system design and installation process. By using a group of cables, the connection and configuration of different lines can be reduced, the design complexity can be reduced, and at the same time, the wiring and maintenance work can be simplified.

[0034] It should be noted that the high-low frequency hybrid waterproof connector in this application is used in the nuclear power environment, specifically for signal connection of underwater robots. After testing, the high-low frequency hybrid waterproof connector of this application can maintain its waterproofness at a depth of 300 - 400 m in a heavy water annular environment.

[0035] Embodiment 2

[0036] This embodiment provides a high-low frequency hybrid waterproof connector for the nuclear power environment. Among them, the first connector 1 further includes that a second O-ring 104 is also provided at the connection between the socket housing 102 and the first insulating seat 109; the first connector 1 further includes that a protrusion is provided in the middle of the socket housing 102; a first groove is provided on the side of the protrusion opposite to the external thread, and a third O-ring 105 is provided in the first groove; a second groove is provided on one side of the socket housing 102 where the third O-ring 105 is located, and a fourth O-ring 106 is provided in the second groove; the first connector 1 is arranged on an underwater device, such as an underwater robot; through the second O-ring 104 thereon, the socket housing 102 and the first insulating seat 109 have good waterproofness and airtightness, so that both ends of the first connector 1 have good sealing performance; through the above-mentioned third O-ring 105 and fourth O-ring 106, since this end is installed on the device end, for example, it can be installed on a robot for underwater operation in this application. Through the above two O-rings, the waterproofness between the connector and the device is ensured, so as to ensure that the device can work normally in an environment of 300 - 400 m underwater.

[0037] It should be noted that in a general nuclear power environment, the underwater environment is about 100 m. Through this application, the waterproofness is guaranteed by an interference design of 300 - 400 m, ensuring that in a workplace with a depth of about 100 m in the nuclear power environment, water will not enter from the connector position of the device and the cable, resulting in signal failure or device damage.

[0038] As a preferred implementation manner, at the end of the socket housing 102 on the side opposite to the external thread, a first rivet 107 and a circlip 108 are further provided; the first rivet 107 penetrates the socket housing 102 and is fixedly connected to the first insulating seat 109; the circlip 108 is located inside the socket housing 102 and faces the first insulating seat 109. Through the above-mentioned first rivet 107, the first insulating seat 109 can always remain in a relatively static state with the socket housing 102, and through the circlip 108, the cable in the device can be more stably connected to the first connector 1.

[0039] Embodiment 3

[0040] A high-low frequency hybrid watertight connector for nuclear power environment, the second connector 2 further includes: a second rivet 205; the second rivet 205 penetrates through the plug housing 206 and is fixedly connected to the second insulating seat 202.

[0041] The second connector 2 further includes: a first bushing 208, a second bushing 209, a wire locking mechanism, a cable sealing ring 212 and a compression ring 213 located inside the plug housing 206, and a locknut 214 located outside the plug housing 206; the first bushing 208 and the second bushing 209 are symmetrically arranged; the wire locking mechanism is located at the ends of the first bushing 208 and the second bushing 209; the cable sealing ring 212 is provided at the end of the wire locking mechanism; the compression ring 213 is provided at the end of the cable sealing ring 212 and abuts against the inside of the locknut 214, wherein the locknut 214 is threadedly and adjustably connected to the end of the plug housing 206.

[0042] The above-mentioned second rivet 205 provides a stable connection for the above-mentioned second insulating seat 202, preventing the insulating seat inside from sliding or displacing when the first connector 1 and the second connector 2 are docked; the first bushing 208, the second bushing 209, the wire locking mechanism, the cable sealing ring 212 and the compression ring 213 are used to firmly connect the wire to the second connector 2 and make the wire have good sealing performance with the connector.

[0043] As a preferred embodiment, the wire locking mechanism includes a first Kevlar locknut 210 and a second Kevlar locknut 211; wherein, the first Kevlar locknut 210 is sleeved outside the second Kevlar locknut 211; the second Kevlar locknut 211 is connected to the front end of the cable sealing ring 212. Through the two Kevlar locknuts, due to their special design and structure, they can provide a high-strength locking effect. By twisting the Kevlar washer on the nut, a reverse force is generated to fasten the nut on the thread and prevent loosening. At the same time, it also has good anti-loosening and self-locking characteristics. When subjected to vibration or impact, due to the elastic deformation of the Kevlar washer, a frictional force opposite to the thread direction can be generated to prevent the nut from loosening; it can also be reused without replacing or adding additional locking elements, only need to check and adjust the tightening degree of the nut in a timely manner. In addition, its design and structure can avoid using additional nut pieces or washers, reducing the number and complexity of parts, which not only simplifies the installation process but also saves costs; it is made of corrosion-resistant materials and can be used in harsh working environments with good chemical corrosion resistance.

[0044] As a preferred embodiment, the second connector 2 is located on one side of the connecting nut 203 and is also sleeved with a wrapping body 215, and the wrapping body 215 at least partially wraps the cable 216. In this application, the above-mentioned wrapping body 215 is made of 3M vulcanized rubber. The above-mentioned 3M vulcanized rubber is made of vulcanized rubber to form the wrapping body 215, which has excellent high-temperature resistance. It can maintain stable performance in high-temperature environments, is not easy to soften or melt, and thus is suitable for high-temperature application scenarios. Among them, the vulcanized rubber has good electrical insulation performance, can effectively isolate and protect the above-mentioned connector, and also has a relatively high resistance value and insulation strength, which can prevent current leakage and circuit failures and improve the reliability of the equipment. Since the vulcanized rubber has strong corrosion resistance in various chemical substances and can resist the corrosion of chemical substances such as acids, alkalis, and solvents, this makes the vulcanized rubber wrapping body suitable for environments that require chemical corrosion resistance and can provide reliable protection, enabling it to improve the anti-aging performance of the connector and the wire in an environment with strong radiation in this application. The above-mentioned wrapping body 215 also has a certain degree of flexibility and elasticity, can provide good wear resistance and impact resistance, and enables the connector to protect the surface of the object under conditions such as vibration, impact, and physical friction, reducing wear and damage.

[0045] As a preferred embodiment, the low-frequency pin assembly 103 and the low-frequency jack assembly 201 are made of copper alloy plated with gold. The above-mentioned gold plating is the gold element (Au). Due to its good electrical conductivity and the fact that the gold element (Au) is a relatively inert metal, when the connector in this application is used in a strong radiation environment in a nuclear power plant, the conductor inside it can be prevented from aging rapidly, thereby increasing its service life.

[0046] In a specific embodiment, a high-low frequency hybrid waterproof connector for a nuclear power environment includes a pluggable first connector 1 and a second connector 2; the first connector 1 includes a socket housing 102 made of stainless steel, and preferably 316L stainless steel is used in this application, and a first insulating seat 109 made of PPS material arranged inside the socket housing 102; a radio frequency hole head assembly 101 is arranged inside the first insulating seat 109, where the radio frequency hole head assembly 101 is composed of an outer shielding layer and a high-frequency jack inside it, and 7 groups of low-frequency pin assemblies 103 made of copper alloy plated with gold; one end of the first connector 1 that can be plugged into the second connector 2 has an external thread on its surface.

[0047] The second connector 2 includes a plug housing 206 made of stainless steel, and 316L stainless steel can be used for better effect; a second insulating seat 202 made of PPS and disposed within the plug housing 206; a radio frequency needle assembly 207 is provided within the second insulating seat 202 and corresponds to the above-mentioned radio frequency hole assembly 101, and 7 groups of materials are the same as the above-mentioned low-frequency pin assembly 103 and a low-frequency jack assembly 201 corresponding in position; one end of the second connector 2 opposite to the first connector 1 is provided with a connection nut 203; at the end position of the second connector 2 within the connection nut 203, a first O-ring 204 is further provided. Among them, in this application, the O-ring is preferably made of nitrile rubber (70°). Among them, nitrile rubber (70°) has good heat resistance, weather resistance, mechanical properties, chemical stability and electrical insulation properties.

[0048] The socket housing 102 is preferably made of 316L stainless steel, and at the end of the side facing away from the external thread, a first rivet 107 and a snap ring 108 made of stainless steel are further provided, and 304 stainless steel can be preferably used. The second rivet 205 penetrates the plug housing 206 and is fixedly connected to the second insulating seat 202.

[0049] The second connector 2 further includes: a first bushing 208, a second bushing 209 and a wire locking mechanism made of brass alloy and disposed within the plug housing 206, a cable sealing ring 212 made of silicone rubber and a compression ring 213 made of 316L stainless steel, and a 316L stainless steel locking nut 214 disposed outside the plug housing 206; the first bushing 208 and the second bushing 209 are symmetrically arranged; the wire locking mechanism is located at the ends of the first bushing 208 and the second bushing 209; the end of the wire locking mechanism is provided with the cable sealing ring 212; the end of the cable sealing ring 212 is provided with the compression ring 213, which abuts against the inside of the locking nut 214, and among them, the locking nut 214 is threadedly and adjustably connected to the end of the plug housing 206.

[0050] Embodiment 4

[0051] This embodiment provides a high-low frequency hybrid cable, and the high-low frequency hybrid cable includes the above-mentioned high-low frequency hybrid watertight connector for nuclear power environment; the high-low frequency hybrid cable has a radio frequency line and a low-frequency signal line therein; the radio frequency line is electrically connected to the radio frequency needle assembly 207 within the high-low frequency hybrid watertight connector, and the low-frequency signal line is electrically connected to the low-frequency jack assembly 201.

[0052] The high-low frequency hybrid cable provided by the present invention, on the one hand, can reduce the required number of cables by integrating high-frequency and low-frequency signal lines, simplify the cable layout, reduce the complexity and cost of the system. Especially in a limited space or occasions where a large amount of signal transmission is required, reducing the number of cables can improve the maintainability and reliability of the system, and at the same time enable it to adapt to signal transmission in underwater operations in the nuclear power environment.

[0053] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0054] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0055] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0056] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or terminal device comprising the element.

[0057] The above has introduced in detail a high-low frequency hybrid waterproof connector and cable for nuclear power environment provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A high-low frequency hybrid waterproof connector for nuclear power environment, characterized in that Comprising a pluggable first connector and a second connector; The first connector includes a first insulating seat disposed within a socket housing; within the first insulating seat are provided a radio frequency pin assembly and at least two low-frequency pin assemblies; at one end of the first connector that can be plugged into the second connector, an external thread is provided on its surface; The second connector includes a second insulating seat disposed within a plug housing; within the second insulating seat are provided a radio frequency needle assembly and at least two low-frequency jack assemblies; wherein, the radio frequency pin assembly corresponds to the radio frequency needle assembly, and the low-frequency pin assemblies correspond to the low-frequency jack assemblies; at one end of the second connector opposite to the first connector is provided a connection nut; at the end position of the second connector within the connection nut, a first O-ring is further provided.

2. The high-low frequency hybrid watertight connector according to claim 1, wherein The first connector further includes that a second O-ring is provided at the connection between the socket housing and the first insulating seat.

3. The high-low frequency hybrid watertight connector according to claim 1 or 2, characterized in that, The first connector further includes that a protrusion is provided in the middle of the socket housing; on one side of the protrusion opposite to the external thread is provided a first groove, and a third O-ring is provided within the first groove; on one side of the socket housing where the third O-ring is located is further provided a second groove, and a fourth O-ring is provided within the second groove.

4. The high-low frequency hybrid waterproof connector according to claim 1 or 2, characterized in that, At the end of the socket housing on the side opposite to the external thread, a first rivet and a snap ring are further provided; the first rivet penetrates the socket housing and is fixedly connected to the first insulating seat; the snap ring is located within the socket housing and faces the first insulating seat.

5. The high-low frequency hybrid watertight connector according to claim 1, characterized in that, The second connector further includes: a second rivet; the second rivet penetrates the plug housing and is fixedly connected to the second insulating seat.

6. The high-low frequency hybrid watertight connector according to claim 5, characterized in that, The second connector further includes: a first bushing, a second bushing, a wire locking mechanism, a cable seal, and a compression ring located inside the plug housing, and a locking nut located outside the plug housing; The first bushing and the second bushing are symmetrically arranged; the wire locking mechanism is located at the ends of the first bushing and the second bushing; at the end of the wire locking mechanism is provided the cable seal; at the end of the cable seal is provided the compression ring, which abuts against the inside of the locking nut, wherein the locking nut is threadedly and adjustably connected to the end of the plug housing.

7. The high-low frequency hybrid watertight connector according to claim 6, wherein The wire locking mechanism includes a first Kevlar locking nut and a second Kevlar locking nut; wherein, the first Kevlar locking nut is sleeved outside the second Kevlar locking nut; the second Kevlar locking nut is connected to the front end of the cable seal.

8. The high-low frequency hybrid waterproof connector according to claim 6, characterized in that, On one side of the second connector where the connection nut is located, a jacket is further sleeved, and the jacket at least partially wraps the cable.

9. The high-low frequency hybrid waterproof connector according to claim 1, characterized in that, The low-frequency pin assemblies and the low-frequency jack assemblies are made of copper alloy with gold plating.

10. A high-low frequency hybrid cable, characterized in that, The high-low frequency hybrid cable includes a high-low frequency hybrid waterproof connector for nuclear power environment as described in any one of claims 1-9; a shielding layer is provided inside the high-low frequency hybrid cable; a radio frequency cable and a low-frequency signal cable are covered inside the shielding layer; the radio frequency cable is electrically connected to a radio frequency needle assembly inside the high-low frequency hybrid waterproof connector, and the low-frequency signal cable is electrically connected to a low-frequency jack assembly.

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