An oil-filled electrical connector for deep-sea operations

Abstract

The utility model discloses a kind of deep sea operation oil-filled electric connectors, including socket and plug, socket insulator is connected in the seat shell and passes through plug assembly, head shell is connected in the head shell and passes through plug assembly;Head shell tail connects the oil pipe of inner threading cable, socket and plug insulator are correspondingly provided with balance through-hole, hole is assembled with guide rod, balance spring and limiting step, guide rod head is equipped with the guide head or guide pipe of adaptation, plug balance through-hole reserves volume cavity section, key position sets up sealing ring.Guide rod and balance spring realize pressure dynamic balance in cooperation, guide head and guide pipe guarantee accurate alignment, connector can adapt to deep sea pressure fluctuation environment, improve connection stability and service life.

Description

Technical Field

[0001] This utility model relates to an electrical connection, specifically an oil-filled electrical connector for deep-sea operations. Background Technology

[0002] The deep-sea operating environment is characterized by extreme conditions such as high pressure, low temperature, and strong corrosion, which places stringent requirements on the sealing performance, pressure resistance, and mating reliability of electrical connectors. Oil-filled electrical connectors are widely used in electrical connection scenarios of underwater equipment such as deep-sea exploration and oil and gas extraction due to the insulating and buffering effects of the oil. Their core requirement is to achieve stable electrical transmission in the high-pressure environment of the deep sea and ensure that the internal oil does not leak and the external seawater does not intrude. Existing deep-sea oil-filled electrical connectors have several shortcomings in practical applications: During mating, a pressure difference exists between the oil-filled chambers inside the socket and plug and the external deep-sea environment, resulting in a significant increase in mating resistance. This not only makes operation inconvenient but also easily causes mechanical damage to the pins, sockets, and other contact components, affecting connection stability. The lack of an effective pressure balancing mechanism means that the high pressure in the deep sea can easily lead to poor oil flow inside the connector, causing localized pressure concentration, which in turn damages the sealing structure, leading to oil leakage or seawater infiltration, severely affecting insulation performance and service life. Insufficient guiding accuracy during mating means that misalignment and wear of the contact components can easily occur, especially under high pressure. Even small guiding deviations can be amplified, further exacerbating component wear. It is difficult to balance pressure balancing and guiding positioning functions, and thus cannot meet the long-term stable operation requirements of deep-sea operations. Summary of the Invention

[0003] This invention addresses the problems of existing deep-sea oil-filled electrical connectors, such as difficulty in mating under high pressure, pressure imbalance, low guiding accuracy, and poor sealing reliability. It provides a deep-sea oil-filled electrical connector that can achieve dynamic pressure balance, improve mating guiding accuracy, and provide stable sealing performance, thus meeting the usage requirements of the extreme deep-sea environment.

[0004] The technical solution adopted by this utility model is: a deep-sea operation oil-filled electrical connector, including a socket and a plug. A pin assembly passes through a socket insulator inside the socket's housing, and a socket hole assembly passes through a plug insulator inside the plug's head housing. The feature is that: an oil pipe for connecting a cable to the socket hole assembly is attached to the non-molding end or tail end of the head housing; one or more socket balance through holes are axially provided on the socket insulator; a socket limiting step is provided on the inner wall of the middle of the socket balance hole; and a socket guide rod, guided by the inner ring of the socket limiting step, passes through the socket balance hole. The socket guide rod has a shoulder section on the outer ring of its non-molding end. This shoulder section abuts against the socket limiting step at the molding end. A socket guide rod sealing ring is provided on the outer wall of the shoulder section, sealingly fitting against the inner wall of the socket balance hole. A socket abutment shoulder is provided on the outer wall of the molding end of the socket guide rod. A socket balance spring is tightly fitted between the socket abutment shoulder and the socket limiting step. A socket guide head or socket guide tube structure is provided at the molding end of the socket guide rod. The socket abutment shoulder, socket guide head, or socket guide tube slides against the outer wall of the socket guide tube to achieve a smooth fit with the socket flat surface. The head of the socket guide rod extends beyond the socket and plug mating end face in the natural state of the socket balance spring. One or more plug balance through holes corresponding to the socket balance through holes are axially provided on the plug insulator. A plug limiting step is provided on the inner wall of the middle of the plug balance hole. A plug guide rod, which receives the sliding guidance of the inner ring of the plug limiting step, passes through the plug balance hole. A plug guide rod shoulder section is provided on the outer ring of the non-mating end of the plug guide rod. The plug guide rod shoulder section abuts against the plug limiting step towards the mating end. The outer wall of the plug guide rod shoulder section is located inside the plug balance hole. The plug guide rod has a sealing ring that fits snugly against the wall. The plug guide rod has a plug abutment shoulder on the outer wall of the mating end. A plug balance spring is installed between the plug abutment shoulder and the plug limiting step. The plug guide rod has a plug guide tube or plug guide head structure at the head of the mating end. The plug abutment shoulder, plug guide head or plug guide tube slides with the plug balance hole in the gap between the outer wall of the plug abutment shoulder or plug guide head or plug guide tube. The head of the plug guide rod extends beyond the socket and plug mating end face in the natural state of the plug balance spring. The plug guide tube or plug guide head structure corresponds to the socket guide head or socket guide seat structure.

[0005] A sealing ring is provided between the socket insulator and the socket housing.

[0006] A sealing ring is provided between the plug insulator and the head housing.

[0007] The plug balance through hole has a volume cavity section at the non-interlocking end that extends beyond the plug guide rod.

[0008] A sealing ring is provided between the inner and outer walls of the head housing and the seat housing.

[0009] A socket balance through hole is provided on the central axis of the socket insulator; a plug balance through hole is provided on the central axis of the plug insulator.

[0010] The socket insulator is provided with two or more socket balance through holes evenly distributed around the central axis; the plug insulator is provided with two or more plug balance through holes evenly distributed around the central axis.

[0011] The beneficial effects of this utility model are: the cable of the connecting socket assembly is passed through the oil pipe at the tail of the head shell, so that the cable is in the oil protection environment throughout the process, avoiding direct contact with seawater that may cause corrosion or insulation failure, improving the environmental tolerance of the cable, enabling the connector to work stably under harsh conditions such as long-term immersion and high-pressure impact, and further expanding its application depth and scope. Meanwhile, the oil acts as a buffer, reducing damage to cables caused by water flow impact or mechanical vibration. The oil pipe also serves as a channel for replenishing and circulating the internal oil. When the plug is inserted into the socket, the socket guide head is inserted into the plug guide tube of the plug, and under the action of the socket and plug balance springs, the plug guide rod is pushed towards the non-molding end. The plug guide rod step shaft section of the plug guide rod retracts, and at this time, the oil stored in the volume chamber section is sent into the plug balance hole, the plug and socket insertion gap, and the socket balance hole under certain pressure control. This ensures that sufficient positive pressure of oil is always maintained in the connector, which can actively respond to pressure changes in the deep-sea environment, accurately offset the internal and external pressure difference, and ensure that the internal pins and sockets are not damaged by external seawater pressure. At the same time, it maintains insulation and buffering performance. The connector can adapt to multi-depth operation scenarios from shallow sea to deep sea, and can remain stable even in extreme environments with pressure fluctuations, significantly improving the adaptability and long-term reliability of the deep-sea environment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged view of the connection between the plug guide rod and the socket guide rod; In the diagram: 1. Socket housing; 2. Socket insulator; 3. Socket pin assembly; 4. Socket balance through hole; 5. Socket limiting step; 6. Socket guide rod; 7. Socket guide rod shoulder section; 8. Socket abutment shoulder; 9. Socket balance spring; 10. Socket guide head; 11. Head housing; 12. Plug insulator; 13. Socket assembly; 14. Plug balance through hole; 15. Plug limiting step; 16. Plug guide rod; 17. Plug guide rod shoulder section; 18. Plug guide rod sealing ring; 19. Plug abutment shoulder; 20. Plug balance spring; 21. Plug guide tube; 22. Volumetric cavity section; 23. Detailed Implementation

[0013] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0014] Figure 1 , 2 As shown: A deep-sea oil-filled electrical connector includes a socket and a plug. A pin assembly 3 passes through a socket insulator 2 inside the socket's housing 1. A socket assembly 14 passes through a plug insulator 13 inside the plug's head housing 12. An oil pipe for a cable passing through the socket assembly 14 is attached to either the non-molding end or the tail end of the non-molding end of the head housing 12. Figure 2 One or more socket balance through holes 4 are provided axially at the center of the socket insulator 2. A socket limiting step 5 is provided on the inner wall of the middle part of the socket balance hole 4. A socket guide rod 6, which is slidably guided by the inner ring of the socket limiting step 5, passes through the socket balance hole 4. A socket guide rod shoulder section 7 is provided on the outer ring of the socket guide rod 6 at the non-molding end. The socket guide rod shoulder section 7 abuts against the socket limiting step 5 at the molding end. A socket guide rod sealing ring 8 is provided on the outer wall of the socket guide rod shoulder section 7, which is sealed and fitted to the inner wall of the socket balance hole 4. A socket abutment shoulder 9 is provided on the outer wall of the socket guide rod 6 at the insertion end. A socket balance spring 10 is tightly abutted between the socket abutment shoulder 9 and the socket limiting step 5. A socket guide head 11 is provided at the insertion end of the socket guide rod 6. The socket abutment shoulder 9, the socket guide head 11, or the outer wall of the socket guide tube slides with the socket balance hole 4. The insertion end of the socket guide rod 6 extends beyond the socket and plug insertion end face in the natural state of the socket balance spring 10. One or more corresponding socket abutment shoulders 9, 11, 12, 13, 14, 15, 16, 17, 18, 19 ... The plug balance through hole 15 of the socket balance through hole 4 has a plug limiting step 16 set on the inner wall of the middle part of the plug balance hole 15. A plug guide rod 17, which is slidably guided by the inner ring of the plug limiting step 16, passes through the plug balance hole 15. A plug guide rod shoulder section 18 is set on the outer ring of the plug guide rod 17 at the non-molding end. The plug guide rod shoulder section 18 abuts against the plug limiting step 16 at the molding end. A plug guide rod sealing ring 19 is set on the outer wall of the plug guide rod shoulder section 18, which is sealed and fits against the inner wall of the plug balance hole 15. The plug guide rod 17 has a plug abutment shoulder 20 on the outer wall of the mating end. A plug balance spring 21 is tightly abutted between the plug abutment shoulder 20 and the plug limiting step 16. The plug guide rod 17 has a plug guide tube 22 at the head of the mating end. The plug balance hole 15 slides between the outer wall of the plug abutment shoulder 20 or the plug guide tube 22. The head of the plug guide rod 17 at the mating end extends beyond the socket and plug mating end face in the natural state of the plug balance spring 21. The plug guide tube 22 corresponds to the socket guide head 11. The plug balance through hole 15 has a volume cavity section 23 at the non-mating end that extends beyond the plug guide rod 17.

[0015] Based on this embodiment, a sealing ring can be provided between the socket insulator and the socket housing. A sealing ring can be provided between the plug insulator and the head housing. A sealing ring can be provided between the inner and outer walls of the head housing and the socket housing during insertion.

[0016] Based on this embodiment, the head connection of the plug guide rod and the socket guide rod can be replaced with any connection or plug-in structure, as long as the guiding and pushing functions are met.

[0017] Based on this embodiment, multiple balance holes can be provided for the socket and the plug.

Claims

1. A deep-sea oil-filled electrical connector, comprising a socket and a plug, wherein a pin assembly passes through a socket insulator within the socket housing, and a socket assembly passes through a plug insulator within the plug head housing, characterized in that: The non-interlocking end of the head housing or the tail end of the non-interlocking end of the head housing is attached to the housing and the oil pipe for the connecting cable of the socket assembly passes through it. One or more socket balance through holes are axially provided on the socket insulator. A socket limiting step is provided on the inner wall of the middle part of the socket balance hole. A socket guide rod, which receives the sliding guidance of the inner ring of the socket limiting step, passes through the socket balance hole. A socket guide rod shoulder section is provided on the outer ring of the non-interlocking end of the socket guide rod. The socket guide rod shoulder section abuts against the socket limiting step towards the interlocking end. A socket guide rod sealing ring is provided on the outer wall of the socket guide rod shoulder section, which is sealed and fitted to the inner wall of the socket balance hole. A socket abutment shoulder is provided on the outer wall of the socket guide rod at the interlocking end. A socket balance spring is tightly abutted between the socket abutment shoulder and the socket limiting step. A socket guide head or socket guide tube structure is provided at the interlocking end of the socket guide rod. The socket balance hole is slidably fitted with the outer wall of the socket abutment shoulder, socket guide head, or socket guide tube. The interlocking end of the socket guide rod extends beyond the socket and plug interlocking end face in the natural state of the socket balance spring. One or more plug balance through holes are axially provided on the plug insulator, each corresponding to a socket balance through hole. A plug limiting step is provided on the inner wall of the middle of the plug balance hole. A plug guide rod, which is slidably guided by the inner ring of the plug limiting step, passes through the plug balance hole. A plug guide rod shoulder section is provided on the outer ring of the non-molding end of the plug guide rod. The plug guide rod shoulder section abuts against the plug limiting step at the molding end. A plug guide rod sealing ring is provided on the outer wall of the plug guide rod shoulder section, which is sealed and fitted to the inner wall of the plug balance hole. A plug abutment shoulder is provided on the outer wall of the plug guide rod at the molding end. A plug balance spring is tightly abutted between the plug abutment shoulder and the plug limiting step. A plug guide tube or plug guide head structure is provided at the molding end of the plug guide rod. The plug balance hole is slidably fitted with the outer wall of the plug abutment shoulder, plug guide head, or plug guide tube. The molding end of the plug guide rod extends beyond the socket and plug molding end face in the natural state of the plug balance spring. The plug guide tube or plug guide head structure corresponds to the socket guide head or socket guide seat structure.

2. The deep-sea operation oil-filled electrical connector according to claim 1, characterized in that: A sealing ring is provided between the socket insulator and the socket housing.

3. The deep-sea operation oil-filled electrical connector according to claim 1, characterized in that: A sealing ring is provided between the plug insulator and the head housing.

4. The deep-sea operation oil-filled electrical connector according to claim 1, characterized in that: The plug balance through hole has a volume cavity section at the non-interlocking end that extends beyond the plug guide rod.

5. A deep-sea operation oil-filled electrical connector according to claim 1, 2, or 3, characterized in that: A sealing ring is provided between the inner and outer walls of the head housing and the seat housing.

6. A deep-sea operation oil-filled electrical connector according to claim 1, characterized in that: A socket balance through hole is provided on the central axis of the socket insulator; a plug balance through hole is provided on the central axis of the plug insulator.

7. A deep-sea operation oil-filled electrical connector according to claim 1 or 6, characterized in that: The socket insulator is provided with two or more socket balance through holes evenly distributed around the central axis; the plug insulator is provided with two or more plug balance through holes evenly distributed around the central axis.

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