A welded watertight through-hull assembly, method of installation and fiber optic hydrophone

Abstract

The application provides a welded watertight transom assembly, a mounting method and an optical fiber hydrophone, and relates to the technical field of hydrophone equipment. The welded watertight transom assembly comprises a transom plug, a plurality of first positioning holes are formed in the transom plug and penetrate the end face of the transom plug, a plurality of transom welding needles, the number of the transom welding needles is the same as the number of the first positioning holes, the transom welding needles are inserted into the first positioning holes, and both ends of the transom welding needles form two welding cups, the two welding cups are formed by the two ends of the first positioning holes, and an O-shaped ring is arranged on the peripheral wall of the transom plug. By arranging the mounting plug, the transom welding needle and the O-shaped ring, the transom plug is mounted on the cabin body of the optical fiber hydrophone, the transom welding needle is inserted into the mounting plug, only one welding cup is extended to be connected with the cable outside, the occupied space is small, the total length of the optical fiber hydrophone is reduced, and the optical fiber hydrophone can be arranged in an environment with high space requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrophone equipment, and in particular to a welded watertight penetration assembly, an installation method and a fiber optic hydrophone. Background Art

[0002] Fiber-optic hydrophones are devices that use fiber optic technology to detect underwater sound waves. Utilizing the principle of fiber-optic interferometry, they use optical fiber as a medium to convert sound wave information detected in the water into fiber-optic signals. Optoelectronic converters then convert these signals into electrical signals, which are then processed by analytical equipment to reveal the sound wave information. Fiber-optic hydrophones are primarily used in marine resource exploration, seabed geological surveys, seabed observation networks, and marine security.

[0003] In fiber-optic hydrophone arrays, the internal electronics typically utilize a dry-tank design, enclosing them within a pressure-resistant cabin. This design protects the electronics from direct hydrostatic pressure, resulting in a stable operating environment and a long service life. When the electronics within the fiber-optic hydrophones need to communicate with external devices, watertight connectors are typically used to ensure the cabin's tightness.

[0004] As fiber-optic hydrophones increasingly require more space, they are becoming increasingly miniaturized. However, the waterproof connector's plug is long and exposed outside the fiber-optic hydrophone. This increases the overall length of the fiber-optic hydrophone, making it impractical to deploy in space-critical environments.

[0005] In view of this, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the Invention

[0006] The object of the present invention is to provide a welded watertight penetration component, an installation method and a fiber optic hydrophone. The welded watertight penetration component is small in size and can adapt to usage scenarios with strong space requirements.

[0007] To achieve the above objectives, the present invention adopts the following technical means:

[0008] A first aspect of the present invention discloses a welded watertight penetration assembly, comprising:

[0009] A tank penetration plug having a plurality of first positioning holes extending through an end surface thereof;

[0010] a plurality of through-cabin welding pins, the number of the through-cabin welding pins being the same as the number of the first positioning holes, the through-cabin welding pins being inserted into the first positioning holes, and two welding cups being formed at both ends of the through-cabin welding pins, the two welding cups extending from both ends of the first positioning holes; and

[0011] An O-ring is arranged on the peripheral wall of the penetration plug.

[0012] Optionally, the first positioning hole is a stepped hole, and the through-cabin welding needle includes a first needle body and a second needle body. The radius of the first needle body is greater than the radius of the second needle body, and the bottom of the first needle body forms a stepped surface, which overlaps the stepped surface of the stepped hole.

[0013] Optionally, an anti-leakage glue boss is formed on the side wall of the penetration plug, and the anti-leakage glue boss is located below the first positioning hole.

[0014] Optionally, an O-ring groove is formed on the peripheral wall of the penetration plug, and the O-ring is arranged in the O-ring groove.

[0015] A second aspect of the present invention discloses a method for installing a welded watertight penetration assembly, comprising:

[0016] Step s1: Installing the penetration welding needle into the first positioning hole of the potting penetration plug;

[0017] Step s2: inserting the O-ring into the O-ring groove of the potted penetration plug to form a welded watertight penetration assembly;

[0018] Step s3: Install the welded watertight penetration assembly onto the cabin of the fiber optic hydrophone.

[0019] A third aspect of the present invention discloses a fiber optic hydrophone, comprising:

[0020] A cabin, one end of which is provided with a second positioning hole, and the cabin is provided with an electronic device; and

[0021] Any of the above-mentioned welded watertight penetration components, the welded watertight penetration component is arranged in the second positioning hole of the cabin body, and the welded watertight penetration component is connected to the electronic device.

[0022] Optionally, a second positioning hole is provided at one end of the cabin body, and the welded watertight cabin penetration assembly is provided in the second positioning hole.

[0023] Optionally, the second positioning hole is a stepped hole, and one end face of the cabin penetration plug is placed on the mounting surface of the stepped hole.

[0024] Optionally, the cabin penetration plug abuts against the inner wall of the cabin body, and the length of the cabin penetration plug is less than or equal to the depth of the second positioning hole.

[0025] Optionally, the O-ring is located between the cabin body and the cabin penetration plug.

[0026] Compared with the prior art, the present invention brings the following technical effects:

[0027] The welded watertight penetration assembly of the present invention is provided with a mounting plug, a penetration welding needle and an O-ring. The penetration plug is installed on the cabin body of the fiber optic hydrophone, and the penetration welding needle is inserted into the mounting plug. Only one welding cup extends out to connect with the external cable. It occupies a small space, reduces the total length of the fiber optic hydrophone, and the fiber optic hydrophone can be arranged in an environment with high space requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 The figure shows a usage scenario of a fiber optic hydrophone in the prior art;

[0030] Figure 2 A schematic diagram of a scenario of a fiber optic hydrophone according to an embodiment of the present invention is shown;

[0031] Figure 3 Shown Figure 2 a cross-sectional view of a watertight penetration assembly;

[0032] Figure 4 A schematic structural diagram of a watertight penetration assembly according to an embodiment of the present invention is shown;

[0033] Figure 5 Show Figure 4 Schematic diagram of the exploded structure of the watertight penetration assembly.

[0034] Description of main component symbols:

[0035] 100 - fiber optic hydrophone; 110 - cabin; 111 - second positioning hole; 112 - mounting surface; 200 - watertight plug; 300 - welded watertight penetration assembly;

[0036] 310 - through-cabin plug; 311 - first positioning hole; 312 - O-ring groove; 313 - anti-leakage rubber boss;

[0037] 320- through-cabin welding needle; 321- first needle body; 322- second needle body; 323- step surface; 324- welding cup;

[0038] 330 - O-ring. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0041] In the prior art, fiber-optic hydrophones often use a watertight connector. One end of the connector connects to the electronics inside the hydrophone's cabin, and the other end connects to external devices, enabling communication. Specifically, the connector consists of a watertight plug and a watertight socket. The plug is installed at one end of the hydrophone's cabin and extends outward from the cabin. The socket is installed at one end of the cable.

[0042] When the watertight plug is inserted into the watertight socket, the electronics inside the fiber-optic hydrophone's cabin connect to the cable via a watertight connector. This watertight connector is commonly used in the prior art. For its specific structure, see Chinese patent publication number CN207098210U, entitled "Watertight Dry-Plug Electrical Connector."

[0043] Since the watertight plug of the watertight connector needs to extend a long distance out of the cabin of the fiber optic hydrophone, the length of the fiber optic hydrophone is greatly increased, which is not suitable for use scenarios with high space requirements.

[0044] For example, see Figure 1 , Figure 1 The following figure illustrates a scenario in which a fiber optic hydrophone 100 with a watertight plug 200 is placed within a pipeline. The pipeline has a small radius, and the fiber optic hydrophone 100 is too long to fit within the pipeline. This allows the fiber optic hydrophone 100 to be placed parallel to the pipeline. The watertight plug 200 restricts the pipeline's turning radius, affecting its proper operation.

[0045] See also Figure 2 and Figure 3 In order to solve the above problems, an embodiment of the present invention discloses a fiber optic hydrophone 100, comprising:

[0046] A cabin 110, wherein a second positioning hole 111 is provided at one end of the cabin 110, and electronic components are provided in the cabin 110; and

[0047] The welded watertight penetration assembly is provided in the second positioning hole 111 of the cabin body 110 .

[0048] One end of the welded watertight penetration assembly is connected to the electronic device, and the other end is connected to the cable to achieve information transmission between the electronic device and the external device. The second positioning hole 111 provides an installation position for the welded watertight penetration assembly.

[0049] In a specific embodiment, the welded watertight penetration assembly includes a penetration plug 310, a plurality of penetration welding needles 320 and an O-ring 330. The penetration plug 310 is disposed in the second positioning hole 111 and abuts against the inner wall of the cabin body 110; the plurality of penetration welding needles 320 are inserted into the penetration plug 310, and one end of the penetration welding needle 320 is taken out of the second positioning hole 111.

[0050] The length of the penetration plug 310 is less than or equal to the depth of the second positioning hole 111. For example, if the depth of the second positioning hole 111 is 10 cm, the length of the plug can be configured to be 6 cm, 8 cm, or 10 cm. The penetration welding pin 320 is used to connect to the cable.

[0051] Since a welded watertight penetration assembly is used, the penetration plug 310 of the welded watertight penetration assembly is entirely located in the second positioning hole 111 of the cabin body 110, with only one end of the penetration welding needle 320 exposed for connection with the cable. The length of the fiber optic hydrophone 100 is greatly reduced, and can be used in scenarios with high space requirements.

[0052] In a specific embodiment, the second positioning hole 111 is a stepped hole, and one end surface of the penetration plug 310 is placed on the mounting surface 112 of the stepped hole.

[0053] By configuring the second positioning hole 111 as a stepped hole, when the welded watertight penetration assembly is fixed in the second stepped hole, the mounting surface 112 can provide support force to the welded watertight penetration assembly toward the outside of the cabin body 110, and the assembly of the welded watertight penetration assembly 300 is more secure and reliable.

[0054] In a specific embodiment, the O-ring 330 is located between the cabin body 110 and the cabin penetration plug 310 .

[0055] Because the nacelle plug 310 is directly installed in the second positioning hole 111 of the nacelle 110, a gap exists between the second positioning hole 111 and the nacelle plug 310. The O-ring 330 is disposed between the nacelle 110 and the nacelle plug 310 to seal the gap between the second positioning hole 111 and the nacelle plug 310, thereby ensuring the sealing of the interior of the nacelle 110.

[0056] See also Figure 4 and Figure 5In another embodiment of the present invention, a welded watertight penetration assembly is disclosed. The welded watertight penetration assembly can be used for the above-mentioned fiber optic hydrophone 100.

[0057] The welded watertight penetration assembly comprises:

[0058] A through-tank plug 310 is provided with a plurality of first positioning holes 311 penetrating through an end surface thereof;

[0059] A plurality of through-cabin welding needles 320 , the number of which is the same as the number of the first positioning holes 311 , the through-cabin welding needles 320 being inserted into the first positioning holes 311 , and two welding cups 324 being formed at both ends of the through-cabin welding needles 320 , the two welding cups 324 extending from both ends of the first positioning holes 311 ; and

[0060] The O-ring 330 is disposed on the peripheral wall of the penetration plug 310 .

[0061] There are four through-the-bay welding pins 320 , which are distributed in a square shape to accommodate the four plug-in points of the cable and the four plug-in points of the electronic device.

[0062] In the welded watertight penetration assembly of the present application, only one welding cup 324 of the penetration welding needle 320 extends out of the cabin body 110 of the fiber optic hydrophone 100. The extended length is small, and the increase in the length of the fiber optic hydrophone 100 is small, which is conducive to the miniaturization of the hydrophone.

[0063] In a specific embodiment, the first positioning hole 311 is a stepped hole, and the through-cabin welding needle 320 includes a first needle body 321 and a second needle body 322. The radius of the first needle body 321 is greater than the radius of the second needle body 322. The bottom of the first needle body 321 forms a stepped surface 323, and the stepped surface 323 overlaps the stepped surface 323 of the stepped hole.

[0064] The step surface 323 of the first step hole faces the outside of the fiber optic hydrophone 100 .

[0065] By configuring the first positioning hole 311 as a stepped hole, providing a stepped surface 323 on the cabin penetration welding needle 320, and by overlapping the stepped surface 323 on the step of the stepped hole, the cabin penetration plug 310 can provide supporting force to the cabin penetration welding needle 320 through the stepped surface 323, so that the cabin penetration welding needle 320 is firmly and reliably fixed.

[0066] Please refer again Figure 3 and Figure 5 In a specific embodiment, a leak-proof glue boss 313 is formed on the side wall of the penetration plug 310 , and the leak-proof glue boss 313 is located below the first positioning hole 311 .

[0067] When securing the O-ring 330, potting compound needs to be added to the first positioning hole 311 to enhance the connection strength between the O-ring 330 and the penetration plug 310. The provision of a leak-proof boss 313 below the first positioning hole 311 prevents the potting compound from flowing onto and contaminating the mounting surface 112 before solidifying.

[0068] Another embodiment of the present application discloses a method for installing a welded watertight penetration assembly, which is suitable for installing the welded watertight penetration assembly on the fiber optic hydrophone 100 .

[0069] This installation method includes:

[0070] Step s1: Installing the penetration welding needle into the first positioning hole of the potting penetration plug;

[0071] Step s2: inserting the O-ring into the O-ring groove of the potted penetration plug to form a welded watertight penetration assembly;

[0072] Step s3: Install the welded watertight penetration assembly onto the cabin of the fiber optic hydrophone.

[0073] Through steps s1 to s3, the welded watertight penetration assembly can be installed on the above-mentioned fiber optic hydrophone.

[0074] Specifically, step s1 involves applying an appropriate two-component epoxy structural adhesive to the penetration welding pin and the mounting hole of the penetration welding pin in the potted penetration plug. Other adhesives may also be used to connect the penetration welding pin to the potted penetration plug.

[0075] Specifically, step s2 is to apply appropriate lubricating silicone grease to the O-ring and the O-ring groove, and then insert the O-ring into the O-ring groove. The lubricating grease can reduce the friction between the O-ring and the O-ring groove, making the installation of the O-ring easier.

[0076] Specifically, step s3 can evenly apply appropriate lubricating silicone grease to the second positioning hole of the fiber optic hydrophone's cabin. The lubricating grease can reduce friction between the fiber optic hydrophone's cabin and the welded watertight penetration assembly, thereby reducing the difficulty of installing the welded watertight penetration assembly.

[0077] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A welded watertight penetration assembly, characterized in that: include: A tank penetration plug having a plurality of first positioning holes extending through an end surface thereof; a plurality of through-cabin welding pins, the number of the through-cabin welding pins being the same as the number of the first positioning holes, the through-cabin welding pins being inserted into the first positioning holes, and two welding cups being formed at both ends of the through-cabin welding pins, the two welding cups extending from both ends of the first positioning holes; and An O-ring is provided on the peripheral wall of the penetration plug; The first positioning hole is a stepped hole, and the through-cabin welding needle includes a first needle body and a second needle body. The radius of the first needle body is greater than the radius of the second needle body. The bottom of the first needle body forms a stepped surface, and the stepped surface overlaps the stepped surface of the stepped hole.

2. The welded watertight penetration assembly according to claim 1, characterized in that: An anti-leakage glue boss is formed on the side wall of the penetration plug, and the anti-leakage glue boss is located below the first positioning hole.

3. The welded watertight penetration assembly according to claim 1, characterized in that: An O-ring groove is formed on the peripheral wall of the penetration plug, and the O-ring is arranged in the O-ring groove.

4. A method for installing a welded watertight penetration assembly, comprising installing the welded watertight penetration assembly according to any one of claims 1 to 3 on a fiber optic hydrophone, characterized in that: This installation method includes: Step s1: Installing the penetration welding needle into the first positioning hole of the potting penetration plug; Step s2: inserting the O-ring into the O-ring groove of the potted penetration plug to form a welded watertight penetration assembly; Step s3: Install the welded watertight penetration assembly onto the cabin of the fiber optic hydrophone.

5. A fiber optic hydrophone, characterized in that: include: A cabin, wherein a second positioning hole is provided at one end of the cabin, and an electronic device is provided in the cabin; and The welded watertight penetration assembly according to any one of claims 1 to 3, wherein the welded watertight penetration assembly is arranged in the second positioning hole of the cabin body, and the welded watertight penetration assembly is connected to the electronic device.

6. The fiber optic hydrophone according to claim 5, characterized in that: The second positioning hole is a stepped hole, and one end surface of the penetration plug is placed on the mounting surface of the stepped hole.

7. The fiber optic hydrophone according to claim 5, characterized in that The cabin penetration plug is in contact with the inner wall of the cabin body, and the length of the cabin penetration plug is less than or equal to the depth of the second positioning hole.

8. The fiber optic hydrophone according to claim 5, characterized in that: The O-ring is located between the cabin body and the cabin penetration plug.

Images