Sealing protection mechanism of underwater equipment power supply
By employing a multi-layered sealing structure and a nano-rubber composite material containing disulfide bonds, the problem of easy failure of the power supply seal in underwater equipment has been solved, enabling stable operation and self-repair function of the equipment, and reducing maintenance difficulty and cost.
Patent Information
- Application Number
- CN202520361174.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Existing underwater equipment power supply sealing and protection structures are prone to failure in complex underwater environments, leading to water infiltration, short circuits, corrosion and other malfunctions. Furthermore, the sealing materials are easily damaged under external forces, making maintenance difficult and costly.
It adopts a multi-seal structure design, including the mating frame and mating sealing groove of the power sealing cover and the sealing receiving seat. It uses nano rubber composite material containing disulfide bonds as the sealing composite rubber, combined with hollow sealing rubber strips and bolt fixation to form a tightly fitting sealing sleeve with self-healing function.
It ensures the stable operation of the underwater equipment power supply, extends the service life of the sealing and protection mechanism, reduces maintenance costs, and improves sealing performance and wear resistance.
Smart Images

Figure CN223942988U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment power supply technology, specifically to a sealing and protection mechanism for an underwater equipment power supply. Background Technology
[0002] A stable power supply is crucial for the proper functioning of underwater equipment. However, existing underwater equipment power supply sealing and protection systems face numerous challenges.
[0003] From a sealing structure perspective, traditional sealing methods are often structurally simple, relying solely on gaskets or sealants, which are insufficient to cope with complex underwater environments. For example, in areas with significant water pressure variations, ordinary gaskets are easily deformed by pressure, leading to seal failure. Water can then seep into the power supply, causing short circuits, corrosion, and other malfunctions, severely impacting the normal operation of the equipment. Furthermore, the connection gaps between the gaskets and equipment components are prone to loosening under long-term water flow impact and mechanical vibration, further reducing sealing performance.
[0004] Regarding sealing materials, while common rubber materials offer some water resistance, their mechanical properties are insufficient, making them prone to damage when subjected to external forces such as pulling or abrasion. Once the sealing material is damaged, water can seep into the power supply, damaging it and potentially causing malfunctions in the entire underwater equipment. Furthermore, these traditional materials lack self-healing capabilities, requiring manual replacement upon damage. This is difficult and costly in underwater environments, leading to prolonged equipment downtime and reduced operational efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a sealing and protective mechanism for the power supply of underwater equipment, so as to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A sealing and protective mechanism for the power supply of an underwater device includes a power supply sealing cover, a sealing support seat at the bottom of the power supply sealing cover, the power supply sealing cover being detachably and fixedly connected to the sealing support seat via a sealing connector, a cable sealing cover being fixedly connected to the upper surface of the power supply sealing cover by bolts, and a connecting cable being inserted into the inner wall of the cable sealing cover.
[0008] The inside of the cable sealing cover is filled with sealing composite rubber for sealing the top of the power supply sealing cover. The bottom surface of the power supply sealing cover is provided with a mating sealing groove. The upper surface of the sealing support is fixedly connected with a mating frame that mates with the mating sealing groove.
[0009] The inner wall of the power supply sealing cover is provided with a heat dissipation chamber. A humidity sensor is fixedly connected to the inner wall of the heat dissipation chamber near the top, and a humidity sensor is fixedly connected to the inner wall of the heat dissipation chamber near the bottom.
[0010] A further improvement of this utility model is that a sealing rubber strip is fixedly connected to the upper surface of the docking frame, and the outer wall of the sealing rubber strip is inserted into the inner wall of the docking sealing groove.
[0011] A further improvement of this utility model is that the upper surface of the cable sealing cover is provided with an installation hole.
[0012] A further improvement of the present invention is that the sealing connector includes a bottom frame, the inner wall of the bottom frame is fixedly connected to the outer wall of the power supply sealing cover near the bottom end, the sealing connector also includes a fastening bolt that extends movably through to the bottom of the bottom frame, and the upper surface of the sealing support is provided with bolt mating holes.
[0013] A further improvement of this utility model is that the bottom end of the fastening bolt is threadedly connected to the inner wall of the bolt mating hole.
[0014] A further improvement of this utility model is that the sealing rubber strip has a hollow structure.
[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0016] 1. This utility model provides a sealing and protection mechanism for the power supply of underwater equipment. Through a multi-layer sealing structure design, such as the mating frame and mating sealing groove between the power supply sealing cover and the sealing support, and the hollow structure of the sealing rubber strip, which can better fill the gaps when squeezed, the tight seal of the connection between the two is ensured. The cable sealing cover and the top of the power supply sealing cover are fixed by bolts, and the inside is filled with sealing composite rubber made of nano rubber composite material containing disulfide bonds, forming a tightly fitting sealing sleeve at the connection between the cable and the power supply, effectively preventing water from entering the inside of the power supply and ensuring the stable operation of the underwater equipment power supply.
[0017] 2. This utility model provides a sealing and protective mechanism for the power supply of underwater equipment. The sealing composite rubber is made of nano-rubber composite material containing disulfide bonds, based on nitrile rubber, which has good oil resistance, wear resistance, and water resistance, making it suitable for underwater environments. The addition of nano-silica enhances the mechanical properties, and the dynamic reversible characteristics of the disulfide bonds enable the material to automatically repair itself when damaged, extending the service life of the sealing and protective mechanism and reducing maintenance costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a bottom view of the power supply sealing cover of this utility model.
[0020] Figure 3 This is a bottom view schematic diagram of the cable sealing cover of this utility model;
[0021] Figure 4 This is a schematic diagram of the sealing support structure of this utility model.
[0022] In the diagram: 1. Power supply sealing cover; 2. Sealing receiving seat; 3. Connecting cable; 4. Cable sealing cover; 5. Fastening bolt; 6. Heat dissipation chamber; 7. Humidity sensor one; 8. Humidity sensor two; 9. Butt sealing groove; 10. Mounting hole; 11. Sealing composite rubber; 12. Butt frame; 13. Sealing rubber strip; 14. Bolt butt hole; 15. Base frame. Detailed Implementation
[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] The present invention will be further described in detail below with reference to embodiments:
[0025] Example 1
[0026] like Figure 1-4 As shown, this utility model provides a sealing and protection mechanism for the power supply of underwater equipment, including a power supply sealing cover 1, a sealing support 2 at the bottom of the power supply sealing cover 1, the power supply sealing cover 1 being detachably and fixedly connected to the sealing support 2 through a sealing connector, a cable sealing cover 4 being fixedly connected to the upper surface of the power supply sealing cover 1 by bolts, and a connecting cable 3 being inserted into the inner wall of the cable sealing cover 4.
[0027] The cable sealing cover 4 is internally filled with sealing composite rubber 11 to seal the top of the power supply sealing cover 1. A mating sealing groove 9 is formed on the bottom surface of the power supply sealing cover 1, and a mating frame 12 that mates with the mating sealing groove 9 is fixedly connected to the upper surface of the sealing support 2. Humidity sensors 7 and 8 use wired transmission, transmitting the converted electrical signals from the humidity sensors to the data acquisition module via shielded cables. The shielded cables effectively resist interference from the complex underwater electromagnetic environment, ensuring accurate signal transmission. In the data acquisition module, after preliminary signal processing, the signals can be transmitted to the monitoring center's host computer via RS-485 or CAN bus, allowing staff to view humidity data in real time.
[0028] The sealing composite rubber 11 is a nano-rubber composite material containing disulfide bonds. This nano-rubber composite material is based on nitrile rubber. Nano-silica is uniformly dispersed in the nitrile rubber matrix through emulsion blending, and functional molecules containing disulfide bonds are introduced.
[0029] Nitrile rubber itself possesses excellent oil resistance, abrasion resistance, and water resistance, making it suitable for use in underwater environments. The addition of nano-silica significantly enhances the mechanical properties of the rubber, such as tensile strength and hardness, making it better able to withstand external tensile and abrasion forces. Furthermore, disulfide bonds possess unique dynamic reversible properties; when the material is damaged, the broken disulfide bonds will recombine under certain conditions, achieving self-repair of the material.
[0030] At the connection between the cable and the power source, this disulfide-bonded nano-rubber composite material is made into a specially shaped sealing sleeve, which is tightly fitted to the connection. When the cable is subjected to external force, causing minor damage to the sealing sleeve, the disulfide bonds at the damaged area will break. However, due to its dynamic reversibility, the surrounding unbroken disulfide bonds will quickly migrate to the damaged area and recombine, causing the material molecular chains to reconnect, filling the damaged area, restoring the integrity of the sealing sleeve, ensuring that the connection is always in a good sealing state, effectively preventing water from entering the power source, and ensuring the stable operation of the underwater equipment power supply.
[0031] The inner wall of the power supply sealing cover 1 has a heat dissipation chamber 6. A humidity sensor 7 is fixedly connected to the inner wall of the heat dissipation chamber 6 near the top, and a humidity sensor 8 is fixedly connected to the inner wall of the heat dissipation chamber 6 near the bottom.
[0032] Example 2
[0033] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, a sealing rubber strip 13 is fixedly connected to the upper surface of the docking frame 12, and the outer wall of the sealing rubber strip 13 is inserted into the inner wall of the docking sealing groove 9.
[0034] The upper surface of the cable sealing cover 4 has a mounting hole 10.
[0035] The sealing connector includes a base frame 15, the inner wall of which is fixedly connected to the outer wall of the power sealing cover 1 near the bottom. The sealing connector also includes a fastening bolt 5 that extends through to the bottom of the base frame 15. The upper surface of the sealing support 2 is provided with bolt mating holes 14.
[0036] The bottom end of the fastening bolt 5 is threaded to the inner wall of the bolt mating hole 14, and the sealing rubber strip 13 has a hollow structure.
[0037] The working principle of the sealing and protection mechanism of the underwater equipment's power supply will be explained in detail below.
[0038] like Figure 1-4 As shown, during use, the power sealing cover 1 and the sealing support 2 are connected. At this time, the connection frame 12 will be inserted into the connection sealing groove 9. Then, the power sealing cover 1 and the sealing support 2 are fixed by the fastening bolts 5.
[0039] During the process of fixing the power sealing cover 1 and the sealing support 2, the sealing rubber strip 13 is squeezed and then deformed. Under the action of the internal air, it can better fill the gap between the docking frame 12 and the docking sealing groove 9 to complete the seal.
[0040] The cable sealing cover 4 is fixed to the top of the power sealing cover 1 by bolts, thus completing the sealing structure connecting the cable 3 and the power sealing cover 1.
[0041] The sealing composite rubber 11 is filled into the inside of the cable sealing cover 4, and at the connection between the cable and the power source, a sealing sleeve with the same shape as the cable sealing cover 4 is formed, which is tightly attached to the connection between the cable and the power source to ensure a sealing and waterproof effect.
[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A sealing and protective mechanism for the power supply of underwater equipment, comprising a power supply sealing cover (1), characterized in that: The bottom of the power sealing cover (1) is provided with a sealing support (2). The power sealing cover (1) is detachably and fixedly connected to the sealing support (2) through a sealing connector. The upper surface of the power sealing cover (1) is fixedly connected with a cable sealing cover (4) by bolts. A connecting cable (3) is inserted into the inner wall of the cable sealing cover (4). The inside of the cable sealing cover (4) is filled with sealing composite rubber (11) for sealing the top of the power sealing cover (1). The bottom surface of the power sealing cover (1) is provided with a docking sealing groove (9). The upper surface of the sealing support (2) is fixedly connected with a docking frame (12) that docks with the docking sealing groove (9). The inner wall of the power supply sealing cover (1) is provided with a heat dissipation chamber (6). A humidity sensor (7) is fixedly connected to the inner wall of the heat dissipation chamber (6) near the top, and a humidity sensor (8) is fixedly connected to the inner wall of the heat dissipation chamber (6) near the bottom.
2. The sealing and protection mechanism for an underwater equipment power supply according to claim 1, characterized in that: A sealing rubber strip (13) is fixedly connected to the upper surface of the docking frame (12), and the outer wall of the sealing rubber strip (13) is inserted into the inner wall of the docking sealing groove (9).
3. The sealing and protection mechanism for an underwater equipment power supply according to claim 1, characterized in that: The upper surface of the cable sealing cover (4) is provided with an installation hole (10).
4. The sealing and protection mechanism for an underwater equipment power supply according to claim 1, characterized in that: The sealing connector includes a bottom frame (15), the inner wall of the bottom frame (15) is fixedly connected to the outer wall of the power supply sealing cover (1) near the bottom end, the sealing connector also includes a fastening bolt (5) that extends through to the bottom of the bottom frame (15), and the upper surface of the sealing support (2) is provided with a bolt mating hole (14).
5. The sealing and protection mechanism for an underwater equipment power supply according to claim 4, characterized in that: The bottom end of the fastening bolt (5) is threaded to the inner wall of the bolt mating hole (14).
6. The sealing and protection mechanism for an underwater equipment power supply according to claim 2, characterized in that: The sealing rubber strip (13) has a hollow structure.