A multi-signal integrated through-the-wall watertight through-hull assembly

Abstract

The application discloses a multi-signal integrated through-wall water-tight cabin-penetrating assembly, and relates to the field of water-tight connectors. The assembly comprises an out-cabin socket, a cabin-penetrating pipe, an in-cabin socket and a wire harness connecting the out-cabin socket and the in-cabin socket, the out-cabin socket and the in-cabin socket are fixedly installed at two ends of the cabin-penetrating pipe, the wire harness is arranged in the cabin-penetrating pipe, and epoxy structural adhesive is filled between the wire harness and the inner wall of the cabin-penetrating pipe; the out-cabin socket and the in-cabin socket are respectively provided with contact terminals of multiple signal types, including low-frequency contact terminals, 1553B contact terminals, radio frequency contact terminals and four-difference contact terminals. The cabin-penetrating pipe comprises a first flange ring, a connecting pipe, a second flange ring and a plug-in pipe. The out-cabin socket is sealed with the cabin-penetrating pipe through a first sealing ring and a second sealing ring to form end face sealing and double radial sealing, and the cabin-penetrating pipe is sealed with a cabin wall through a third sealing ring and a fourth sealing ring to form end face sealing and double radial sealing. The in-cabin socket is fixedly connected with the cabin-penetrating pipe through laser fusion welding of a V-shaped welding groove.

Description

Technical Field

[0001] This invention relates to the field of watertight connectors, and more particularly to a multi-signal integrated through-wall watertight through-cabin assembly. Background Technology

[0002] With the continuous development of marine equipment, underwater connectors have become an indispensable component. Connectors that pass through pressure-resistant housings are widely used in marine equipment for internal and external signal transmission. However, the currently common method of cable penetration through the housing has many limitations.

[0003] Traditional watertight connectors are only suitable for shallow water and static cable mounting conditions. In deep water or harsh conditions, they are prone to leakage, causing irreparable damage to equipment and control systems inside the cabin. While single through-cabin connectors are convenient to install and offer excellent watertightness, they can only support signal transmission for a single cable, greatly limiting their application.

[0004] Furthermore, existing underwater through-wall sealed connectors have limited functionality, often employing multiple adapters to increase the axial length of internal contact terminals. This restricts the through-wall thickness, typically limiting it to below 20mm. As water depth increases, the underwater sealed enclosure is affected by underwater pressure, necessitating an increase in wall thickness to ensure reliable safety. For connectors requiring multiple signal transmission functions and significant through-wall thickness, conventional connectors face substantial limitations in structure and manufacturing processes.

[0005] Existing technologies, such as patent application CN121642627A, disclose a multi-signal beam-expanding hybrid transmission trans-tank connector, which includes multiple contacts of different specifications for transmitting radio frequency coaxial signals, fiber optic signals, and power signals, achieving stable mixed transmission of multiple signals within the same connector. However, the longitudinal pressure resistance and sealing reliability of this connector in deep-water, high-pressure environments still need improvement, and its trans-tank thickness is limited.

[0006] For example, patent application CN115732980A discloses a low-profile, longitudinally sealed through-cabin cable assembly. By aligning the insertion direction of the watertight cable with the insertion direction of the contact element, a 90° turn of the watertight cable is achieved, saving space. However, this assembly is mainly suitable for through-cabin passage in narrow gaps within the cabin. For applications requiring passage through thicker cabin walls, its structural strength and sealing performance are insufficient.

[0007] For example, patent CN212542815U discloses a long-penetrating underwater sealed adapter for hybrid power and network communication. It combines multiple functional contacts using a glass sintering process, enabling simultaneous transmission of multiple signals through a single connector. However, its penetration length is only suitable for sealed equipment with a bulkhead thickness of 8-50mm, limiting its application in thicker bulkheads.

[0008] In summary, the existing technology has at least the following technical problems: First, the traditional structure has insufficient sealing reliability in deep water or harsh working conditions, and cannot meet the long-term use requirements of deep water environment; second, the existing underwater through-wall sealing socket has a single function and is limited in terms of the thickness of the tank penetration, usually only able to penetrate tanks with a thickness of less than 20mm; third, the longitudinal pressure bearing capacity and deep water sealing performance of the multi-signal integrated tank penetration connector still need to be improved, and there is a lack of tank penetration solutions for thick tank walls (such as 113mm); fourth, the existing tank penetration device has a complex structure and insufficient convenience for installation and maintenance. Summary of the Invention

[0009] The main objective of this invention is to propose a multi-signal integrated through-wall watertight through-chamber assembly, which aims to solve at least one of the above-mentioned technical problems.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: A multi-signal integrated through-wall watertight compartment assembly includes an external socket, a compartment penetration tube, an internal socket, and a wiring harness for connecting the external socket and the internal socket. The external socket is securely mounted on a first end of the compartment penetration tube, and the internal socket is securely mounted on a second end of the compartment penetration tube. The wiring harness is disposed inside the compartment penetration tube, and epoxy structural adhesive is filled between the wiring harness and the inner wall of the compartment penetration tube. Multiple signal type contact terminals are respectively provided inside the external socket and the internal socket. The external socket is used to mate with an external plug, and the internal socket is used to mate with an internal plug.

[0011] Preferably, the through-hole pipe includes a first flange ring, a connecting pipe, a second flange ring, and an insert pipe arranged sequentially from left to right. The first flange ring and the second flange ring are connected by the connecting pipe, and the insert pipe is located on the right side of the second flange ring. The external socket includes a first housing, which includes a left pipe section, a disc flange, and a right pipe section arranged sequentially from left to right, all three being integrally formed. The right pipe section of the first housing is inserted into the central hole of the through-hole pipe. The right end face of the disc flange abuts against the left end face of the first flange ring, and the disc flange and the first flange ring are fastened together by multiple first screws. Specifically, there are six first screws, each with a specification of M4×14. Screw mounting holes are provided on the disc flange; these holes are screw through holes with tapered countersunk heads. After passing through the screw mounting holes of the disc flange, the first screws are tightened onto the threaded blind holes of the first flange ring.

[0012] Preferably, an annular groove is formed on the right end face of the disc flange, and a first sealing ring is installed thereon. The first sealing ring and the left end face of the first flange ring form an end face seal. At least two annular grooves are formed on the outer circumferential surface of the right pipe section, and a second sealing ring is installed in each annular groove. The first flange ring and the inner hole surface of the connecting pipe together form a first sealing surface, and the second sealing ring and the first sealing surface form a double radial seal. Through the above-mentioned multi-seal structure of end face seal plus double radial seal, the sealing reliability between the external socket and the through-hole pipe is effectively guaranteed.

[0013] Preferably, to prevent rotation of the external socket relative to the axis of the through-tube, an anti-rotation structure is provided between the first housing and the through-tube. Specifically, an anti-rotation pin is inserted into the left end face of the first flange ring, and a pin hole is provided on the disc flange; when the disc flange and the first flange ring are mated, the left half of the anti-rotation pin is inserted into the pin hole, thus preventing rotation; a first marking groove is provided on the outer circumferential surface of the disc flange, and a second marking groove is provided on the outer circumferential surface of the first flange ring. When the first marking groove and the second marking groove are aligned, it indicates that the first housing and the through-tube are angularly aligned, facilitating accurate orientation during assembly. Red ink is applied to each marking groove for easy identification during assembly.

[0014] Preferably, the insert tube of the through-tube is used to be inserted into the mounting hole of the underwater platform bulkhead, and the second flange ring is used to abut against the outer surface of the underwater platform bulkhead. The second flange ring and the underwater platform bulkhead are fastened together by a second screw; the second screw is an M5 screw. Specifically, a screw through hole is provided on the second flange ring, and the second screw passes through the screw through hole and is then screwed into the threaded blind hole of the underwater platform bulkhead. Because the distance between the first flange ring and the second flange ring is small, it is inconvenient to install the second screw. Therefore, in order to facilitate the installation of the second screw, a through hole corresponding to the screw through hole is provided on the first flange ring. The diameter of the through hole is larger than the maximum outer diameter of the second screw, so that the second screw can freely pass through the through hole during assembly, meeting the requirements for installation in a narrow radial space.

[0015] To achieve a seal between the penetration tube and the underwater platform bulkhead, a structure with a single end face and double radial sealing rings is installed. Specifically, two annular grooves are provided on the outer circumference of the left end of the insertion tube, and a fourth sealing ring is installed in each groove. An annular groove is provided on the right end face of the second flange ring, and a third sealing ring is installed therein. When the penetration tube is securely installed on the underwater platform bulkhead, the third sealing ring forms an end face seal with the outer surface of the underwater platform bulkhead, and the two fourth sealing rings form a double radial seal with the inner wall of the mounting hole in the underwater platform bulkhead.

[0016] To facilitate the injection of epoxy structural adhesive into the interior of the through-tube, an injection hole is provided on the tube wall for post-assembly adhesive injection, thereby enhancing the internal pressure resistance of the through-tube assembly. The epoxy structural adhesive is injected into the interior of the through-tube through the injection hole, effectively filling the internal cavity and enhancing the sealing performance of the connector.

[0017] Preferably, the in-cabin socket includes a second housing, which is integrally tubular in structure, comprising a left tube and a right tube from left to right, both integrally formed. The outer circumferential surface of the right tube has external threads for threaded engagement with the connecting sleeve of the in-cabin plug. The left tube is inserted into the inner hole at the right end of the insertion tube. A milled cutting plane is milled on the outer circumferential surface of the left tube, which engages with a limiting protrusion in the inner hole of the insertion tube to achieve an anti-rotation function.

[0018] Preferably, a second chamfer is provided on the left end edge of the right tube body, and a first chamfer is provided on the right end edge of the insert tube; when the left tube body is inserted into the inner hole of the right end of the insert tube, the second chamfer and the first chamfer are joined to form a V-shaped weld groove, and the tube is permanently fixed to the second shell by laser welding.

[0019] Preferably, a third marking groove is provided on the outer cylindrical surface of the right end of the insertion tube, and a fourth marking groove is provided on the outer peripheral surface of the right tube body. When the third marking groove is aligned with the fourth marking groove, it indicates that the second shell and the penetration tube are angularly aligned.

[0020] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: (1) By using a through-tube to install external and internal sockets, and by setting up contact terminals of various signal types inside the external and internal sockets, the integrated and stable transmission of various signals can be realized. It can be widely used in signal transmission of deep-water underwater platforms and can meet the requirements of large wall thickness (113mm) through-tube.

[0021] (2) The present invention adopts an integrated design of multiple signal types, including 1553B, radio frequency, four differential, low frequency signals, etc., which breaks through the limitation of the single function of existing connectors, realizes the stable transmission of multiple signals in the same connector, and improves the flexibility and adaptability of the connector.

[0022] (3) By setting the anti-rotation pin and the pin hole to cooperate, and the cutting plane and the limiting protrusion to cooperate, the present invention effectively prevents the rotation of the external socket and the internal socket relative to the through tube, thus ensuring the angular positioning accuracy of the components. At the same time, by setting the marking groove, it is easy to find the correct direction during assembly, thereby improving assembly efficiency and accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the multi-signal integrated through-wall watertight through-cabin assembly of the present invention.

[0025] Figure 2 This is a schematic diagram of the multi-signal integrated through-wall watertight compartment penetration assembly of the present invention after removing the compartment penetration pipe.

[0026] Figure 3 This is an exploded view of the structure of the multi-signal integrated through-wall watertight through-cabin assembly of the present invention. The wire harness is not shown in the figure.

[0027] Figure 4 This is a structural diagram of the external socket.

[0028] Figure 5 This is a structural diagram of the in-cabin socket.

[0029] Figure 6 This is a three-dimensional structural diagram of the tunnel tube.

[0030] Figure 7 This is a cross-sectional view of a low-frequency contact terminal.

[0031] Figure 8 This is a cross-sectional view of the 1553B contact terminal.

[0032] Figure 9 This is a cross-sectional view of the radio frequency contact terminal.

[0033] Figure 10 This is a cross-sectional view of a four-differential contact terminal.

[0034] Reference numerals: 1. External socket; 11. First housing; 11a. Left pipe section; 11b. Disc flange; 11c. Right pipe section; 111. Screw mounting hole; 112. Pin hole; 113. First marking groove; 114. First keyway; 115. First hole face; 116. First limiting step; 117. Second hole face; 2. Through-hull pipe; 201. First flange ring; 202. Connecting pipe; 203. Second flange ring; 204. Insert pipe; 211. First chamfer; 212. Through hole; 213. Threaded blind hole; 214. Anti-rotation pin; 217. Screw through hole; 218. Injection hole; 219. Second marking groove; 220. Third marking groove; 221. First sealing surface; 3. In-cabin socket; 31. Second housing; 31a. Left tube; 31b. Right tube; 311. Second chamfer; 312. Cutting plane; 313. Fourth marking groove; 314. Fourth hole surface; 315. Second keyway; 316. Third hole surface; 317. Second limiting step; 4. Epoxy structural adhesive; 5. Wire harness; 6. Alkali-free glass cloth; 7. First sealing ring; 8. Second sealing ring; 9. First screw; 10. Third sealing ring; 12. 1553B contact. Terminals; 1201, First outer conductor; 1202, Insulating support; 1203, Adapter socket; 1204, Inner conductor; 1205, First dielectric body; 1206, Intermediate conductor; 1207, Second glass; 1208, Second outer conductor; 1209, First solder strip; 1210, First copper strip; 1211, First heat shrink tubing; 13, Four differential contact terminals; 1301, Third outer conductor; 1302, Inner conductor pin; 1303, Fourth glass; 1304, O-ring seal; 1305, Second heat shrink tubing; 1306, Second solder strip; 1307. 14. Second copper strip; 14. RF contact terminal; 1401. Left outer conductor; 1402. Adapter pinhole; 1403. Second dielectric body; 1404. Third dielectric body; 1405. Retaining ring; 1406. Third glass; 1407. Inner guide post; 1408. Insertion piece; 1409. Right outer conductor; 1410. Fourth dielectric body; 1411. Limiting screw sleeve; 1412. Insulating sleeve; 15. Low frequency contact terminal; 1501. Pin contact piece; 1502. First glass; 1503. Insulating base; 1504. Silicone; 16. Fourth sealing ring; A. Partition. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0037] Combination Figures 1 to 10 As shown, this invention provides a multi-signal integrated through-wall watertight penetration assembly, including an external socket 1, a penetration tube 2, an internal socket 3, and a wiring harness 5 for connecting the external socket 1 and the internal socket 3. The external socket 1 is securely mounted to the first end (left end) of the penetration tube 2, and the internal socket 3 is securely mounted to the second end (right end) of the penetration tube 2. The wiring harness 5 is disposed inside the penetration tube 2, and epoxy structural adhesive 4 is filled between the wiring harness 5 and the inner wall of the penetration tube 2. The wiring harness 5 is covered with alkali-free glass cloth 6 to protect the wiring harness and enhance its adhesion to the epoxy structural adhesive. The external socket 1 is used to mate with an external plug, and the internal socket 3 is used to mate with an internal plug.

[0038] The transom 2 in this invention is the core pressure-bearing component of the entire assembly, and its structure is as follows: Figure 6 As shown, the penetration pipe 2 includes, from left to right, a first flange ring 201, a connecting pipe 202, a second flange ring 203, and a cartridge pipe 204. The first flange ring 201 and the second flange ring 203 are connected by the connecting pipe 202, and the cartridge pipe 204 is located to the right of the second flange ring 203. The outer diameter of the connecting pipe 202 is larger than the outer diameter of the cartridge pipe 204, while the outer diameters of the first flange ring 201 and the second flange ring 203 are larger than the outer diameter of the connecting pipe 202. The first flange ring 201, the connecting pipe 202, and the second flange ring 203 form a dumbbell shape. Furthermore, the wall thickness of the connecting pipe 202 is greater than the wall thickness of the cartridge pipe 204. As the main pressure-bearing part of the penetration pipe 2, the larger wall thickness of the connecting pipe 202 effectively improves the pressure-bearing performance of the component in deep-water environments. Specifically, the wall thickness design of the connecting pipe 202 takes into account the external hydrostatic pressure at a water depth of 3000 meters (approximately 30 MPa). The wall thickness distribution of each section was optimized through finite element analysis, which effectively strengthened the stress concentration area.

[0039] The external socket 1 includes a first housing 11, which comprises, from left to right, a left pipe section 11a, a disc flange 11b, and a right pipe section 11c. These three components are integrally formed and made of high-strength, corrosion-resistant metal materials (such as titanium alloy or special stainless steel) to resist long-term seawater corrosion. The outer circumference of the left pipe section 11a is provided with external threads, the specifications of which match the connecting thread sleeve of the external plug, for threaded connection with the external plug, ensuring axial locking force after insertion. The right pipe section 11c of the first housing 11 is inserted into the central hole of the through-tube 2. The outer diameter of the right pipe section 11c and the inner diameter of the central hole of the through-tube 2 are fitted with a clearance fit, facilitating smooth insertion during assembly and ensuring effective compression of the sealing ring. The right end face of the disc flange 11b abuts against the left end face of the first flange ring 201, transmitting axial force through end-face contact.

[0040] The disc flange 11b and the first flange ring 201 are fastened together by multiple first screws 9. In this embodiment, there are six first screws 9, each with a specification of M4×14, evenly distributed along the circumference. The disc flange 11b has screw mounting holes 111, which are countersunk screw holes with tapered heads. The tapered countersunk heads allow the heads of the first screws 9 to sink into the flange, preventing external protrusions from affecting the insertion and closing of the external plug. After passing through the screw mounting holes 111 of the disc flange 11b, the first screws 9 are tightened into the threaded blind holes 213 of the first flange ring 201. When tightening the first screws 9, a diagonal alternating tightening method is used, applying torque gradually in three stages, with the final torque value controlled within a specified range to ensure uniform end-face pressure between the disc flange 11b and the first flange ring 201, and to ensure consistent compression of the first sealing ring 7.

[0041] An annular groove is formed on the right end face of the disc flange 11b, and a first sealing ring 7 is installed thereon. The first sealing ring 7 is made of seawater-resistant and high-pressure-resistant nitrile rubber or fluorosilicone rubber, and its cross-sectional shape is O-shaped or rectangular. When the first screw 9 is tightened, the right end face of the disc flange 11b presses against the left end face of the first flange ring 201, and the first sealing ring 7 is compressed. The compression rate is controlled between 15% and 25%, thereby forming an end face seal. The end face seal can effectively prevent seawater from seeping into the component from the flange mating surface. At the same time, two annular grooves are provided on the outer circumferential surface of the right pipe section 11c, and a second sealing ring 8 is installed in each annular groove. The first flange ring 201 and the inner hole surface of the connecting pipe 202 together form a first sealing surface 221. The first sealing surface 221 is a continuous smooth cylindrical surface with a surface roughness Ra value of no more than 0.8μm to ensure good contact with the second sealing ring 8. The second sealing ring 8 and the first sealing surface 221 form a double radial seal. The dual radial seal provides redundant sealing barriers; even if one seal fails, the other can still maintain sealing performance. The second seal 8 is made of the same material as the first seal 7, and its compression ratio is also controlled between 15% and 25%. Through the above-mentioned multi-seal structure of end face sealing plus dual radial sealing, the sealing reliability between the external socket 1 and the through-tube 2 is effectively guaranteed.

[0042] To prevent the external socket 1 from rotating relative to the axis of the through-tube 2, an anti-rotation structure is provided between the first housing 11 and the through-tube 2. Specifically, an anti-rotation pin 214 is inserted into the left end face of the first flange ring 201. The anti-rotation pin 214 is a cylindrical steel pin, one end of which is press-fitted into the pin hole of the first flange ring 201, and the other end extends out of the left end face. A pin hole 112 is provided on the disc flange 11b, and the position of the pin hole 112 corresponds to the position of the anti-rotation pin 214. When the disc flange 11b and the first flange ring 201 are mated together and fixed by the first screw 9, the left half of the anti-rotation pin 214 is inserted into the pin hole 112 on the disc flange 11b, forming a keyed connection, thereby playing an anti-rotation role. The fit clearance between the anti-rotation pin 214 and the pin hole 112 is controlled within the range of 0.02~0.05mm, which can ensure smooth insertion and effectively limit circumferential rotation.

[0043] A first marking groove 113 is provided on the outer circumferential surface of the disc flange 11b, and a second marking groove 219 is provided on the outer circumferential surface of the first flange ring 201. Red ink is applied to each marking groove for easy identification during assembly. When the first marking groove 113 aligns with the second marking groove 219, it indicates that the angular orientation between the first housing 11 and the through-hole pipe 2 is accurate, meaning the pin hole 112 aligns with the anti-rotation pin 214, and the holes of the first screw 9 are also aligned. The marking grooves greatly facilitate assembly personnel in quickly finding the correct orientation, avoiding blind rotation and alignment, and improving assembly efficiency.

[0044] The insertion tube 204 of the through-tube 2 is used to be inserted into the mounting hole of the underwater platform bulkhead (not shown in the figure), and the second flange ring 203 is used to abut against the outer surface of the underwater platform bulkhead. The second flange ring 203 is fastened to the underwater platform bulkhead by a second screw, which is an M5 screw and is evenly distributed along the circumference. Specifically, a screw through hole 217 is provided on the second flange ring 203, and the second screw passes through the screw through hole 217 and is then screwed into the threaded blind hole of the underwater platform bulkhead. Because the interval between the first flange ring 201 and the second flange ring 203 is small (the length of the connecting tube 202 is limited), it is difficult to insert a regular wrench when installing the second screw. Therefore, a through hole 212 corresponding to the screw through hole 217 is provided on the first flange ring 201, and the diameter of the through hole 212 is larger than the maximum outer diameter of the second screw (including the screw head diameter). During assembly, the second screw can freely pass through the through hole 212 axially. Assemblers can use an extended socket or a universal wrench to operate the second screw through the through hole 212, meeting the requirements for installation in confined radial spaces. This design greatly facilitates on-site installation and avoids the problem of not being able to tighten the screw due to insufficient operating space.

[0045] To achieve a seal between the penetration tube 2 and the underwater platform bulkhead, a structure with a double radial sealing ring on the end face was installed. Specifically, combined with... Figure 3 As shown, two annular grooves are provided on the outer circumferential surface of the left end of the insert tube 204, and fourth sealing rings 16 are installed on each groove. An annular groove is provided on the right end face of the second flange ring 203, and a third sealing ring 10 is installed on it. When the insert tube 2 is fastened to the underwater platform bulkhead, the preload provided by the second screw causes the right end face of the second flange ring 203 to press against the outer surface of the bulkhead, compressing the third sealing ring 10 and forming an end face seal with the outer surface of the underwater platform bulkhead. At the same time, the insert tube 204 is inserted into the bulkhead mounting hole, and the two fourth sealing rings 16 form a double radial seal with the inner wall of the underwater platform bulkhead mounting hole. The end face seal plus the double radial seal together constitute a triple sealing barrier between the insert tube 2 and the bulkhead, effectively preventing high-pressure seawater from outside the tank from seeping into the tank through the gap between the tube wall and the bulkhead.

[0046] An injection hole 218, which is a radial through hole, is provided on the wall of the insertion tube 204. The injection hole 218 is used to inject epoxy structural adhesive 4 into the interior of the penetration tube 2 after assembly. After curing, the epoxy structural adhesive 4 forms a solid filler, which firmly bonds to the wire harness 5, the alkali-free glass cloth 6, and the inner wall of the penetration tube 2, further enhancing its pressure resistance and watertightness. After injection, the injection hole 218 is sealed with a metal plug.

[0047] The in-cabin socket 3 includes a second housing 31, which is a tubular structure comprising a left tube 31a and a right tube 31b from left to right. These two parts are integrally formed and made of the same material as the first housing 11. The outer circumferential surface of the right tube 31b has external threads for threaded engagement with the connecting sleeve of the in-cabin plug. The left tube 31a is inserted into the inner hole at the right end of the insertion tube 204. A cutting plane 312 is milled on the outer circumferential surface of the left tube 31a, which engages with a limiting protrusion in the inner hole of the insertion tube 204. When the left tube 31a is inserted into the inner hole of the insertion tube 204, the cutting plane 312 and the limiting protrusion fit together, thus achieving an anti-rotation function and preventing the in-cabin socket 3 from rotating relative to the through-tube 2 during use. The outer diameter of the right tube 31b is equal to the outer diameter of the insertion tube 204.

[0048] A second chamfer 311 is provided on the left edge of the right tube 31b, and a first chamfer 211 is provided on the right edge of the insertion tube 204. When the left tube 31a on the second shell 31 is inserted into the inner hole of the right end of the insertion tube 204 (i.e., the left end face of the right tube 31b abuts against the right end face of the insertion tube 204), the second chamfer 311 and the first chamfer 211 join to form a V-shaped weld groove. The cross-section of the V-shaped weld groove is V-shaped, with an opening angle of 60°~90° and a depth of 1~2mm. Laser fusion welding is used, focusing the laser beam on the bottom of the V-shaped weld groove, melting the base material of the through-tube 2 and the second shell 31 to form a molten pool, which, after cooling, forms a permanently bonded weld. Laser fusion welding has the advantages of a small heat-affected zone, small deformation, and high weld quality, ensuring the strength and sealing of the welded joint.

[0049] A third marking groove 220 is provided on the outer cylindrical surface of the right end of the insertion tube 204, and a fourth marking groove 313 is provided on the outer peripheral surface of the right tube body 31b. Red ink is applied to each marking groove. When the third marking groove 220 and the fourth marking groove 313 are aligned, it indicates that the angular orientation between the second housing 31 and the through-hole tube 2 is accurate, that is, the tangential plane 312 is aligned with the limiting protrusion, which facilitates assembly.

[0050] like Figure 4As shown, the inner surface of the left pipe section 11a is a stepped surface, including a first bore surface 115 and a second bore surface 117 from left to right. The inner diameter of the second bore surface 117 is smaller than the inner diameter of the first bore surface 115, and the stepped surfaces of the two form a first limiting step 116. Multiple first keyways 114 are evenly distributed on the second bore surface 117. Each first keyway 114 is an axially extending straight groove. In actual use, the external socket 1 is used to connect and engage with the external plug. The external plug housing is provided with protruding keys that match the number and position of the first keyways 114. When the plug is inserted into the socket, the protruding keys slide along the first keyways 114, serving as a guide and preventing the external plug from rotating during use. The first limiting step 116 blocks and limits the stepped surface on the external plug housing. When the plug is inserted until it contacts the first limiting step 116, it indicates that the plug is fully engaged, restricting further insertion and preventing damage to the internal contacts.

[0051] like Figure 5 As shown, the inner surface of the right tube 31b is a stepped surface, including a third hole surface 316 and a fourth hole surface 314 from right to left. The inner diameter of the third hole surface 316 is larger than the inner diameter of the fourth hole surface 314, and the stepped surfaces of the two form a second limiting step 317. Multiple second keyways 315 are evenly distributed on the fourth hole surface 314, and the structure of the second keyways 315 is the same as that of the first keyway 114. In actual use, the in-cabin socket 3 is used to connect and cooperate with the in-cabin plug, and its working principle is the same as that of the external end. The protruding key on the in-cabin plug housing cooperates with the second keyway 315 for guidance and anti-rotation, and the second limiting step 317 limits the insertion depth of the plug.

[0052] The contact terminals inside the external socket 1 and the internal socket 3 are identical in type and number to ensure consistency and interchangeability of signal transmission. The contact terminals include low-frequency contact terminal 15, 1553B contact terminal 12, radio frequency contact terminal 14, and four differential contact terminals 13, thereby enabling integrated transmission of multiple signals.

[0053] The specific structures of each contact terminal are described in detail below.

[0054] (a) Structure of low-frequency contact terminal 15 like Figure 7 As shown, the low-frequency contact terminal 15 is used to transmit low-frequency electrical signals, such as control signals and power signals. The low-frequency contact terminal 15 adopts a glass-sealed design and includes a pin contact 1501 and an insulating base 1503. The pin contact 1501 is a cylindrical metal conductor; its left end is used to engage with the corresponding contact of an external or internal plug, and its right end is used to connect to a wiring harness. The insulating base 1503 is a ring-shaped component made of a polymer material (such as polytetrafluoroethylene or polyetheretherketone) to increase creepage distance and insulation performance.

[0055] Two-tiered through holes are respectively provided on the partition A inside the first housing 11 and the second housing 31 for installing low-frequency contact terminals 15. The two-tiered through holes include a smaller diameter section and a larger diameter section. The assembly process of the low-frequency contact terminal 15 with the first housing 11 and the second housing 31 is as follows: First, the pin contact 1501 is inserted into the two-tiered through hole of the partition A, so that the pin contact 1501 passes through the smaller diameter section and extends a certain length. Then, the annular gap between the smaller diameter section and the pin contact 1501 is filled with first glass 1502 (glass powder), and glass sealing is performed under high temperature (approximately 800~1000℃) and high pressure, so that the glass melts and forms a tight chemical bond with the partition A and the pin contact 1501. After cooling, a glass body is formed, achieving a seal. Afterwards, the insulating base 1503 is inserted into the larger diameter section of the two-tiered through hole and fitted onto the pin contact 1501. Finally, silicone 1504 is potted into the gap between the insulating base 1503 and the pin contact 1501. After curing, the silicone 1504 forms an elastic sealing layer, further improving the sealing performance and mitigating the impact force on the pin contact 1501 during insertion and removal. The amount of silicone 1504 potted should fill the entire gap to ensure a good seal.

[0056] (ii) Structure of 1553B contact terminal 12 like Figure 8 As shown, the 1553B contact terminal 12 is used to transmit 1553B bus signals, which are differential signals with strong anti-interference capabilities and high transmission rates. The 1553B contact terminal 12 includes a first outer conductor 1201, an insulating support 1202, an adapter socket 1203, an inner conductor 1204, a first dielectric body 1205, an intermediate conductor 1206, a second glass 1207, a second outer conductor 1208, a first solder strip 1209, a first copper strip 1210, and a first heat shrink tubing 1211.

[0057] The inner conductor 1204 is disposed inside the intermediate conductor 1206, and the two are coaxially arranged. The intermediate conductor 1206 is a cylindrical conductor, and an annular gap is formed between its inner hole and the inner conductor 1204. The inner conductor 1204 and the intermediate conductor 1206, as well as the intermediate conductor 1206 and the partition A inside the first housing 11 and the second housing 31, are sealed together by the second glass 1207 under high temperature and pressure to achieve longitudinal sealing. That is, the second glass 1207 simultaneously fills the gaps between the inner conductor 1204 and the intermediate conductor 1206, and between the intermediate conductor 1206 and the partition A, forming an integrated glass sealing structure that ensures airtightness.

[0058] The right end of the first outer conductor 1201 is fitted into the countersunk hole of the partition A using an interference fit. The diameter of the countersunk hole is slightly smaller than the outer diameter of the first outer conductor 1201, and a tight fit is achieved by pressing. The left end of the second outer conductor 1208 is also fitted into the countersunk hole of the partition A using an interference fit.

[0059] The insulating support 1202 is a ring-shaped insulating component, installed in the stepped through-hole of the first outer conductor 1201 with an interference fit. The adapter socket 1203 is a cup-shaped contact component, installed in the stepped through-hole of the insulating support 1202 with an interference fit. The left end of the intermediate conductor 1206 is sleeved on the outer cylindrical surface of the right end of the first dielectric body 1205, and the left end of the intermediate conductor 1206 is inserted into the countersunk hole at the right end of the adapter socket 1203 with an interference fit, thus achieving electrical connection. The first dielectric body 1205 is an insulating sleeve, sleeved on the inner conductor 1204, and the left cylindrical part of the first dielectric body 1205 is interference-fitted with the through-hole in the middle of the adapter socket 1203, serving as an insulating support.

[0060] The wire harness (i.e., conductor) connected to the intermediate conductor 1206 and inner conductor 1204 is located within the through-hole of the second outer conductor 1208. The shielding layer (braided mesh) of the wire harness is fitted onto the outer surface of the second outer conductor 1208. Then, the first copper strip 1210 and the first solder strip 1209 are sequentially fitted. After being heated with a hot air gun, the first solder strip 1209 melts, soldering the shielding layer to the second outer conductor 1208. The first copper strip 1210 serves to assist in the soldering and strengthen the connection. Next, the first heat-shrink tubing 1211 is fitted. Heating with a hot air gun causes the first heat-shrink tubing 1211 to shrink, wrapping the soldered area and providing insulation protection.

[0061] (III) Structure of RF contact terminal 14 like Figure 9 As shown, the radio frequency contact terminal 14 is used to transmit radio frequency signals (such as high-frequency communication signals, radar signals, etc.). The radio frequency contact terminal 14 includes a left outer conductor 1401, an adapter pin hole 1402, a second dielectric body 1403, a third dielectric body 1404, a retaining ring 1405, a third glass 1406, an inner guide post 1407, a socket 1408, a right outer conductor 1409, a fourth dielectric body 1410, a limiting screw sleeve 1411, and an insulating sleeve 1412.

[0062] Mounting holes for mounting radio frequency contact terminals 14 are respectively provided on the partition A inside the first housing 11 and the second housing 31. The two ends of the mounting holes are threaded holes (internal thread on the left and internal thread on the right), and the two threaded holes are connected by optical holes.

[0063] The inner guide post 1407 is the inner conductor of the radio frequency signal, and its outer diameter is smaller than the inner diameter of the optical aperture in the middle of the mounting hole. The inner guide post 1407 and the optical aperture in the middle of the mounting hole are sealed together under high temperature and high pressure by a third glass 1406 to achieve longitudinal sealing, while ensuring insulation and fixation between the inner guide post and the partition A.

[0064] The left outer conductor 1401 has an external thread on its right end, which screws into the threaded hole on the left side of the partition mounting hole. The central through hole of the left outer conductor 1401 is a three-step hole (the diameter gradually increases from left to right). The second dielectric body 1403 is an insulating tube, which is set in the central through hole of the left outer conductor 1401. The stepped surface on the outer cylindrical surface of the second dielectric body 1403 and the stepped surface of the central hole of the left outer conductor 1401 form a blocking limit, restricting the axial position of the second dielectric body 1403.

[0065] The outer surface of the adapter pinhole 1402 is stepped. The adapter pinhole 1402 is inserted into the stepped through hole of the second medium body 1403. The stepped surface on the outer cylindrical surface of the adapter pinhole 1402 and the stepped surface of the inner hole of the second medium body 1403 form a blocking limit to prevent the adapter pinhole 1402 from moving axially.

[0066] A third dielectric body 1404 (insulating tube) is fitted onto the right end of the adapter pinhole 1402. The left end face of the third dielectric body 1404 abuts against the annular boss on the outer cylindrical surface of the adapter pinhole 1402 to form an axial limit. A retaining ring 1405 is fitted onto the third dielectric body 1404. The retaining ring 1405 is press-fitted into the inner hole at the right end of the left outer conductor 1401 using an interference fit. An annular platform is provided at the right end of the center hole of the retaining ring 1405. This annular platform mates with the stop on the outer circumferential surface of the right end of the third dielectric body 1404 to form an axial lock, preventing the third dielectric body 1404 from dislodging.

[0067] The left end of the inner guide post 1407 is inserted into the inner hole at the right end of the adapter pin hole 1402 to achieve electrical connection of the inner conductor. The left half of the right outer conductor 1409 is inserted into the mounting hole of the partition. A fourth dielectric 1410 (insulating tube) is provided in the center hole of the right outer conductor 1409. The socket 1408 is inserted into the center hole of the fourth dielectric 1410, and the right end of the inner guide post 1407 is inserted into the inner hole at the left end of the socket 1408 to achieve electrical connection.

[0068] A limiting screw sleeve 1411 is fitted around the outside of the right outer conductor 1409. The limiting screw sleeve 1411 is a ring-shaped piece with external threads, and its external threads mate with the internal threads on the right side of the partition A. When the limiting screw sleeve 1411 is tightened, the left end of the limiting screw sleeve 1411 presses against the stepped surface of the right outer conductor 1409, pressing and fixing the right outer conductor 1409. The left end of the insulating sleeve 1412 is fitted onto the right end of the right outer conductor 1409, providing insulation protection.

[0069] (iv) Structure of the four differential contact terminals 13 like Figure 10 As shown, the four differential contact terminal 13 is used to transmit four differential signals (such as four-channel LVDS signals or Ethernet signals) and has high-speed data transmission capability. The four differential contact terminal 13 includes a third outer conductor 1301, an inner conductor pin 1302, a fourth glass 1303, an O-ring 1304, a second heat shrink tubing 1305, a second solder strip 1306, and a second copper strip 1307.

[0070] Four inner conductor pins 1302 are disposed within the central hole of the third outer conductor 1301, which is a cylindrical metal part, and its central hole is used to accommodate the four inner conductor pins 1302. The third outer conductor 1301 and the inner conductor pins 1302 are sealed together as one unit by a fourth glass 1303, that is, glass powder is filled into the gaps between the conductors under high temperature and high pressure to form an integral glass seal.

[0071] Two annular grooves are provided on the outer circumferential surface of the third outer conductor 1301, respectively for mounting O-rings 1304. The four differential contact terminals 13 are inserted as a whole into the mounting holes of the partition A inside the first housing 11 and the second housing 31. When the four differential contact terminals 13 are inserted into the mounting holes, the O-rings 1304 are compressed, forming a double radial seal with the inner wall of the mounting hole, ensuring the sealing between the contact terminals and the housing.

[0072] The wire harness (a shielded multi-core cable) is connected to the right end of the inner conductor pin 1302. Specifically, each core wire is soldered to its corresponding inner conductor pin 1302. The shielding layer of the wire harness is fitted onto the outer surface of the right end of the third outer conductor 1301, followed by the sequential application of the second copper strip 1307 and the second solder strip 1306. After heating with a hot air gun, the second solder strip 1306 melts, soldering the shielding layer to the third outer conductor 1301. Then, the second heat shrink tubing 1305 is fitted; heating with a hot air gun causes the second heat shrink tubing 1305 to shrink, wrapping the soldered area.

[0073] Through the independent design of the above four types of contact terminals, each terminal has undergone impedance matching, shielding and sealing optimization for the type of signal it transmits, ensuring that there is no interference between multiple signals during integrated transmission and that the signal integrity is good.

[0074] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-signal integrated through-wall watertight penetration assembly, characterized in that, Includes an external socket (1), a through-hole pipe (2), an internal socket (3), and a wiring harness (5) for connecting the external socket (1) and the internal socket (3); The external socket (1) is fastened to the first end of the through-tube (2), and the internal socket (3) is fastened to the second end of the through-tube (2); the wire harness (5) is located inside the through-tube (2), and epoxy structural adhesive (4) is filled between the wire harness (5) and the inner wall of the through-tube (2). The external socket (1) and the internal socket (3) are respectively provided with contact terminals of various signal types. The external socket (1) is used to cooperate with the external plug, and the internal socket (3) is used to cooperate with the internal plug.

2. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 1, characterized in that, The through-hole pipe (2) includes a first flange ring (201), a connecting pipe (202), a second flange ring (203), and a insert pipe (204) arranged sequentially from left to right. The first flange ring (201) and the second flange ring (203) are connected by the connecting pipe (202), and the insert pipe (204) is located on the right side of the second flange ring (203). The external socket (1) includes a first housing (11), which includes a left pipe section (11a), a disc flange (11b) and a right pipe section (11c) from left to right, and the three are integrally formed. The right pipe section (11c) of the first housing (11) is inserted into the center hole of the through-hole pipe (2), and the right end face of the disc flange (11b) abuts against the left end face of the first flange ring (201). The disc flange (11b) and the first flange ring (201) are fastened together by multiple first screws (9).

3. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 2, characterized in that, An annular groove is provided on the right end face of the disc flange (11b) and a first sealing ring (7) is installed thereon. The first sealing ring (7) forms an end face seal with the left end face of the first flange ring (201). At least two annular grooves are provided on the outer circumferential surface of the right pipe section (11c), and a second sealing ring (8) is installed in each annular groove. The first flange ring (201) and the inner hole surface of the connecting pipe (202) together form a first sealing surface (221), and the second sealing ring (8) and the first sealing surface (221) form a double radial seal.

4. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 2, characterized in that, An anti-rotation pin (214) is inserted into the left end face of the first flange ring (201), and a pin hole (112) is provided on the disc flange (11b); when the disc flange (11b) and the first flange ring (201) are connected to each other, the left half of the anti-rotation pin (214) is inserted into the pin hole (112); The outer circumferential surface of the disc flange (11b) is provided with a first marking groove (113), and the outer circumferential surface of the first flange ring (201) is provided with a second marking groove (219). When the first marking groove (113) and the second marking groove (219) are aligned, it indicates that the first housing (11) and the through-hole pipe (2) are angularly aligned.

5. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 2, characterized in that, The insertion tube (204) of the through-tube (2) is used to be inserted into the mounting hole of the underwater platform bulkhead, and the second flange ring (203) is used to abut against the outer surface of the underwater platform bulkhead. The second flange ring (203) is fastened to the underwater platform bulkhead by the second screw. Two annular grooves are provided on the outer circumferential surface of the left end of the insert tube (204) and a fourth sealing ring (16) is installed thereon. An annular groove is provided on the right end face of the second flange ring (203) and a third sealing ring (10) is installed thereon. The third sealing ring (10) forms an end face seal with the outer surface of the underwater platform bulkhead. The two fourth sealing rings (16) form a double radial seal with the inner wall of the mounting hole of the underwater platform bulkhead.

6. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 5, characterized in that, A screw through hole (217) is provided on the second flange ring (203). The second screw passes through the screw through hole (217) and is screwed into the threaded blind hole of the underwater platform bulkhead. A through hole (212) corresponding to the position of the screw through hole (217) is provided on the first flange ring (201). The diameter of the through hole (212) is larger than the maximum outer diameter of the second screw, and the second screw passes freely through the through hole (212).

7. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 2, characterized in that, An injection hole (218) is provided on the wall of the insertion tube (204) for injecting epoxy structural adhesive (4) into the interior of the transom tube (2).

8. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 2, characterized in that, The in-cabin socket (3) includes a second housing (31), which is a tubular structure in whole, and includes a left tube (31a) and a right tube (31b) from left to right. The two are integrally formed structures. The left tube (31a) is inserted into the inner hole at the right end of the insert tube (204). A cutting plane (312) is milled on the outer circumferential surface of the left tube (31a). The cutting plane (312) cooperates with the limiting protrusion in the inner hole of the insert tube (204) to achieve the anti-rotation function.

9. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 8, characterized in that, A second chamfer (311) is provided on the left edge of the right tube (31b), and a first chamfer (211) is provided on the right edge of the insert tube (204). When the left tube (31a) is inserted into the inner hole at the right end of the insert tube (204), the second chamfer (311) and the first chamfer (211) are joined to form a V-shaped weld groove, and the through tube (2) and the second shell (31) are welded together by laser welding to achieve permanent connection.

10. The multi-signal integrated through-wall watertight through-cabin assembly according to claim 8, characterized in that, A third marking groove (220) is provided on the outer cylindrical surface of the right end of the insertion tube (204), and a fourth marking groove (313) is provided on the outer peripheral surface of the right tube body (31b). When the third marking groove (220) and the fourth marking groove (313) are aligned, it indicates that the second shell (31) and the through-hole tube (2) are angularly aligned.

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