A regulatable ultrasound transmitter seal and method of assembly thereof

Abstract

The application belongs to the technical field of ultrasonic transmitter sealing, and particularly relates to a controllable ultrasonic transmitter sealing device and an assembling method thereof. The application comprises a cabin body, a front end sealing assembly, a tail fixing assembly, a heat dissipation buffer module, a cable sealing joint and an angle adjusting module. The front end sealing assembly realizes direct sealing coupling of the transducer head through a waterproof joint, a rubber ring and a limiting pressure ring; the heat dissipation buffer module is filled with heat-conducting oil and has a micro-hole structure; the angle adjusting module realizes flexible adjustment of the emission angle through a movable piston and a hinge structure; and the tail fixing assembly and the cable sealing joint ensure the water-tight reliability of the overall structure. The application solves the problems of large energy loss, difficult heat dissipation and fixed angle of the traditional ultrasonic antifouling device, has the advantages of reliable sealing, efficient heat dissipation, high acoustic energy utilization rate, adjustable angle and simple maintenance, and is suitable for long-term ultrasonic antifouling operation of various marine equipment.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic transmitter sealing technology, specifically relating to an adjustable ultrasonic transmitter sealing device and its assembly method. Background Technology

[0002] With the deepening development of marine resource development and marine engineering construction, marine equipment is highly susceptible to fouling organisms such as mussels and barnacles during long-term underwater operations. This not only affects the normal operation of the equipment but also leads to structural corrosion and performance degradation, resulting in huge maintenance costs and economic losses. Ultrasonic antifouling technology, as a highly efficient and environmentally friendly antifouling method, destroys the biofouling interface through cavitation effects and has been gradually applied to equipment such as ships, platforms, and underwater sensors.

[0003] Traditional ultrasonic antifouling devices typically employ a closed, watertight chamber structure, consisting of an ultrasonic transmitter, transducer, chamber, and end caps. The transducer is connected to the chamber wall via a coupling agent, and the end caps are sealed using threads or flanges. However, this structure has the following significant drawbacks: low sound wave transmission efficiency, with severe energy loss at the interface between the flange plate and the coupling agent; complete chamber sealing leading to poor heat dissipation and accelerated aging of internal electronic components due to temperature rise; ineffective buffering of transducer vibrations during operation, easily causing structural fatigue and peeling of the antifouling coating; and a fixed emission angle, which cannot be dynamically adjusted according to the actual distribution of randomly attached fouling organisms, limiting the antifouling range and effectiveness.

[0004] Therefore, there is an urgent need for an ultrasonic transmitter sealing structure that can ensure sealing reliability, achieve efficient heat dissipation, low-loss sound transmission, and flexible angle adjustment, so as to meet the complex and ever-changing marine antifouling requirements. Summary of the Invention

[0005] This invention addresses the problems of low acoustic energy transmission efficiency, poor heat dissipation, short lifespan, fixed emission angle, low vibration resistance and sealing performance, and difficult maintenance and assembly in existing ultrasonic transmitter sealing devices. It proposes an adjustable ultrasonic transmitter sealing device, comprising a main body, a front sealing assembly, a rear fixing assembly, a heat dissipation buffer module, a cable sealing connector, and an angle adjustment module. The front sealing assembly is detachably connected to the front end of the main body; the rear fixing assembly is sealed to the rear end of the main body; the heat dissipation buffer module is built into the internal cavity of the main body; the cable sealing connector is located on the side wall of the main body and communicates with the internal cavity of the main body; and the angle adjustment module is connected to the side wall of the main body and the transducer inside the main body.

[0006] According to the above-described adjustable ultrasonic transmitter sealing device, the front sealing assembly includes a large-size waterproof connector, a rubber ring, and a limiting pressure ring; the large-size waterproof connector is threadedly connected to the front end of the main body of the chamber, and the rubber ring is fitted on the top of the transducer; the limiting pressure ring is fitted on the outer wall of the large-size waterproof connector and fits against the end face of the radiating surface of the transducer, and when the large-size waterproof connector is tightened, the limiting pressure ring presses the rubber ring to form a double seal.

[0007] According to the above-described adjustable ultrasonic transmitter sealing device, the tail fixing assembly includes a bottom cover, locking bolts, and sound-absorbing pads. The bottom cover is fixed to the rear flange face of the main body of the cabin by the locking bolts. The sound-absorbing pads are disposed between the bottom cover and the rear flange face of the main body of the cabin, and the contact area between the rear flange face of the main body of the cabin and the sound-absorbing pads is coated with sealant.

[0008] According to the above-described adjustable ultrasonic transmitter sealing device, the heat dissipation buffer module includes heat-conducting oil and micro-holes on the side wall of the main body of the cabin. The heat-conducting oil fills the internal cavity of the main body of the cabin. The micro-holes are located on the side wall of the main body of the cabin and are symmetrically arranged, avoiding the positions of the cable sealing joint and the angle adjustment module.

[0009] According to the above-described adjustable ultrasonic transmitter sealing device, the main body of the chamber is made of high-strength corrosion-resistant alloy material, its inner wall is provided with an anti-corrosion coating, and its outer wall is provided with a ring-shaped array of reinforcing ribs.

[0010] According to the above-described adjustable ultrasonic transmitter sealing device, the angle adjustment module includes two movable pistons, a damping gasket, and a sealing gasket at the piston. The two movable pistons are symmetrically arranged through the upper side wall of the main body of the cabin. The sealing gasket at the piston is arranged between the movable piston and the side wall of the main body of the cabin. One end of the movable piston is connected to the main body of the cabin by a thread. The other end of the movable piston is connected to the transducer by a hinge. By rotating the movable piston, the length of the two movable pistons extending out of the main body of the cabin is changed, thereby realizing the angle adjustment of the transducer.

[0011] According to the above-described adjustable ultrasonic transmitter sealing device, the cable sealing connector includes: a connector body, a clamping nut, and an anti-pull-out clamp; the connector body is located at one end of the cable and is interference-fitted with the cable; the clamping nut is sleeved in the middle of the connector body and threadedly connected to the connector body; the anti-pull-out clamp is located on the outer wall of the connector body and is clamped and fixed to the cable.

[0012] According to the adjustable ultrasonic transmitter sealing device described above, a stepped groove is provided on the outer side wall of one end of the large-size waterproof connector, and a rubber ring is embedded in the stepped groove; an anti-slip fit structure is provided between the head of the transducer and the rubber ring to prevent axial movement of the transducer; a flexible buffer layer is provided between the limiting pressure ring and the end face of the transducer's radiation surface; the limiting pressure ring and the inner hole of the large-size waterproof connector are transitionally fitted.

[0013] According to the above-described adjustable ultrasonic transmitter sealing device, an annular sealing groove is provided on the top flange surface of the main body of the cabin, and a rubber ring is embedded in the annular sealing groove to form a double sealing structure; a damping pad is provided at the hinge between the movable piston of the angle adjustment module and the main body of the cabin, and the angle of the transducer is fixed by pressing the damping pad.

[0014] The assembly method of the adjustable ultrasonic transmitter sealing device described above includes the following steps:

[0015] Step S1: Pre-process each component;

[0016] Clean the sealing surfaces of all components, including the main body of the cabin, the bottom cover, and large-sized waterproof joints, ensuring that there are no foreign objects such as oil stains, impurities, or burrs that may affect the sealing effect; check whether each component is intact, and ensure that elastic components such as rubber rings and sealing gaskets are undamaged;

[0017] Step S2: Assemble the front sealing assembly;

[0018] Place the rubber ring around the outer periphery of the transducer head to ensure the anti-slip fit is properly in place; place the transducer inside the main body of the cabin so that the radiation surface of the transducer is flush with the front opening of the cabin; put the limiting pressure ring into the middle of the large-size waterproof connector, align it with the threaded interface at the front of the main body of the cabin, rotate the large-size waterproof connector and gradually tighten it, and press the rubber ring with the limiting pressure ring.

[0019] Step S3: Assemble the cable sealing connector;

[0020] Place the sealing sleeve over the outside of the cable, pass the cable through the cable sealing joint on the side wall of the main body of the cabin, extend it into the cabin and connect it to the terminal of the transducer; tighten the compression nut of the cable sealing joint so that the joint body is tightly against the outer periphery of the cable to form a seal; install the anti-pull-out clamp on the joint body to clamp the cable.

[0021] Step S4: Assemble the heat dissipation buffer module;

[0022] Slowly inject heat transfer oil into the internal cavity of the main body of the cabin to ensure that the heat transfer oil completely fills the internal gaps and leaves no air bubbles; symmetrically set micro-holes at preset positions on the side of the main body of the cabin.

[0023] Step S5: Assemble the tail fixing components;

[0024] Embed the sound-absorbing pad into the annular sealing groove of the rear flange face of the main body of the cabin, and apply sealant evenly to the area where the rear flange face and the sealing pad are in contact; align the bottom cover with the rear flange face, insert the locking bolts and tighten them one by one to ensure that the bottom cover is firmly connected to the main body of the cabin and the sound-absorbing pad is pressed.

[0025] Step S6: Assemble the angle adjustment module;

[0026] Place the sealing gasket on the outer diameter of the movable piston and install the movable piston at a preset position on the upper side wall of the main body of the cabin. Connect one end of the movable piston to the main body of the cabin with a thread, and connect the other end to the transducer through a hinge. Install a damping pad at the hinge between the movable piston and the transducer to complete the angle adjustment module assembly. Adjust the angle of the transducer by rotating the movable piston according to the actual anti-fouling requirements.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. Improve sound energy transmission efficiency and reduce energy loss. Traditional structures require sound waves to be transmitted through a coupling agent and flange, resulting in high energy loss. This invention uses a rubber ring for direct sealing coupling, eliminating the interface between the coupling agent and flange, shortening the sound wave transmission path, and reducing energy loss. Micro-holes further reduce acoustic impedance, improving sound field intensity and anti-fouling range.

[0029] 2. Significantly improves heat dissipation performance and extends equipment life. Traditional sealed chambers suffer from poor heat dissipation and rapid temperature rise. This invention utilizes heat-conducting oil filling and micro-holes to assist heat dissipation, forming an efficient heat conduction path. This reduces the internal temperature of the chamber, significantly delays the aging of electronic components, and improves the reliability of the equipment during long-term underwater operations.

[0030] 3. Achieves flexible and adjustable launch angle, improving anti-fouling coverage. Traditional structures have a fixed launch angle, limiting the anti-fouling range. This invention uses a movable piston and hinge structure to achieve fine adjustment of the transducer angle, adapting to the anti-fouling requirements of different attachment locations, improving anti-fouling coverage, and is especially suitable for curved structures or environments with multiple obstacles.

[0031] 4. Enhanced vibration resistance and sealing reliability. The limiting pressure ring features a flexible buffer layer, and sound-absorbing rubber pads absorb vibration energy, preventing transducer vibration from being transmitted to the hull. The rubber ring and the sealing gasket at the piston form a multiple seal, maintaining excellent sealing performance even in deep-water, high-pressure environments and preventing seawater infiltration.

[0032] 5. Simplified assembly and maintenance, reducing operating costs. The modular structure of this invention clarifies the assembly process, and each sealing component can be disassembled and replaced individually without requiring overall disassembly and assembly. The cable sealing joint is equipped with an anti-pull-out clamp to prevent seal failure due to external pulling force, reducing maintenance frequency and costs, and is suitable for marine equipment that is unattended for extended periods. Attached Figure Description

[0033] Figure 1 This is a perspective view of the structure of an adjustable ultrasonic transmitter sealing device according to the present invention.

[0034] Figure 2 This is a perspective view of the connection structure between the angle adjustment module of the adjustable ultrasonic transmitter sealing device and the main body of the cabin according to the present invention.

[0035] Figure 3 This is a perspective view of the front sealing assembly of an adjustable ultrasonic transmitter sealing device according to the present invention.

[0036] Figure 4 This is a perspective view of the cable sealing joint of an adjustable ultrasonic transmitter sealing device according to the present invention.

[0037] Figure 5 This is a partial sectional view of the main view of a schematic diagram of an adjustable ultrasonic transmitter sealing device according to the present invention.

[0038] In the diagram: 1-locking bolt, 2-sound-absorbing pad, 3-main body of the cabin, 4-movable piston, 5-rubber ring, 6-waterproof connector top nut, 7-limiting pressure ring, 8-waterproof connector top nut, 9-compression nut, 10-bolt at the cable, 11-connector body, 12-micro hole, 13-damping washer, 14-sealing washer at the piston, 17-anti-pull-out clamp, 18-transducer. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] like Figures 1 to 5 As shown: An adjustable ultrasonic transmitter sealing device according to this embodiment includes a cabin body 3, a front sealing component, a tail fixing component, a heat dissipation buffer module, a cable sealing connector and an angle adjustment module.

[0041] The main body 3, as the core load-bearing component of the entire device, is used to install and secure all other components, providing a stable installation foundation. It is made of high-strength, corrosion-resistant alloy material, with an anti-corrosion coating on its inner wall to enhance its resistance to seawater corrosion and ensure stable operation in marine environments for extended periods. The outer wall features a ring-shaped array of reinforcing ribs to enhance the overall strength and pressure resistance of the hull, preventing structural deformation caused by underwater pressure.

[0042] The function of the front-end sealing assembly is to achieve sealing protection of the front end of the transducer 18, while ensuring effective contact between the radiating surface of the transducer 18 and seawater, thereby reducing energy loss; it includes a large-size waterproof connector, a rubber ring 5, and a limiting pressure ring 7. One end of the large-size waterproof connector is equipped with a waterproof connector top nut 6; the other end is equipped with a waterproof connector top nut 8.

[0043] Assembly method: First, put the rubber ring 5 on the outer periphery of the head of the transducer 18, and then put the transducer 18 into the opening at the front end of the main body 3 of the cabin, so that the radiation surface of the transducer 18 is flush with the opening at the front end of the main body 3 of the cabin; then put the limiting pressure ring 7 on the middle of the large-size waterproof connector, and then connect the large-size waterproof connector to the front end of the main body 3 of the cabin through threads. During the tightening process, the large-size waterproof connector pushes the limiting pressure ring 7 to press the rubber ring 5, so that the rubber ring 5 fits tightly against the head of the transducer 18 and the inner wall of the opening at the front end of the main body 3 of the cabin.

[0044] Among them: the large-size waterproof connector is detachable and easy to maintain through threaded connection; the rubber ring 5 is embedded in the stepped groove of the large-size waterproof connector to form a double sealing barrier to prevent seawater from seeping into the tank; the limiting pressure ring 7 is used to uniformly transmit the clamping force, and the flexible buffer layer on its end face can avoid constraining the vibration of the transducer 18 while ensuring the reliability of the seal; the anti-slip mating structure between the head of the transducer 18 and the rubber ring 5 prevents the transducer 18 from moving axially during operation.

[0045] The tail-end fixing assembly is used to seal the rear end of the main body 3 of the cabin, and at the same time provides rear-end support for the internal components; the tail-end fixing assembly includes sound-absorbing rubber pads 2 and locking bolts 1;

[0046] Assembly method: First, embed the sound-absorbing pad 2 into the annular sealing groove of the rear flange face of the main body 3. Apply sealant to the contact area between the rear flange face and the sealing pad. Then, align the bottom cover with the rear flange face and fix the bottom cover to the main body 3 of the cabin with the locking bolt 1. Press the sound-absorbing pad 2 tightly during the tightening of the bolt.

[0047] Among them: the bottom cover serves as the sealing component at the rear end of the main body 3, and together with the main body 3, it forms a complete sealed cavity; the sound-absorbing pad 2 and the sealant form a double seal, completely preventing seawater from seeping in from the rear end; the locking bolt 1 ensures a firm connection between the bottom cover and the main body 3, and avoids the connection from loosening due to underwater pressure.

[0048] The main function of the heat dissipation buffer module is to dissipate the heat generated by the transducer 18 during operation, absorb internal energy loss, buffer the vibration of the transducer 18, and improve the sound wave transmission efficiency; it includes heat transfer oil and micro-holes 12 set on the side wall of the main body 3 of the cabin.

[0049] Assembly method: Fill the internal cavity of the main body 3 with heat-conducting oil to ensure that the heat-conducting oil completely covers the outer periphery and internal gap of the transducer 18; on the side wall of the main body 3, avoid the positions of cable connectors and angle adjustment modules, symmetrically open micro holes 12.

[0050] Among them: the heat transfer oil has good thermal conductivity, which can quickly transfer the heat generated by the transducer 18 to the cabin wall, and then dissipate it through heat exchange between the cabin and seawater, thus avoiding excessive temperature inside the cabin; the micro-hole 12 reduces energy loss in the sound wave transmission process and increases the sound field intensity while ensuring water tightness, and at the same time assists in heat dissipation and expands the ultrasonic anti-fouling range.

[0051] The angle adjustment module is used to flexibly adjust the emission angle of the transducer 18 to adapt to the anti-fouling requirements of different positions; it includes a movable piston 4, a damping pad 13, and a sealing gasket 14 at the piston.

[0052] Assembly method: The sealing gasket 14 at the piston is fitted onto the side wall of the movable piston 4, the damping gasket 13 is fitted onto the movable piston 4, and one end of the movable piston 4 is set on the upper side wall of the main body of the cabin 3 through a threaded connection; one end of the movable piston 4 is connected to the transducer 18 through a hinge; the damping gasket 13 is installed at the hinge between the movable piston 4 and the main body of the cabin 3.

[0053] Specifically: by rotating the movable piston 4, the extension length of the movable piston 4 on both sides of the main body 3 can be changed, thereby driving the transducer 18 to rotate around the hinge to achieve fine-tuning of the angle; the damping pad 13 is used to fix the adjusted angle to avoid angle deviation due to vibration during operation; the sealing gasket 14 at the piston prevents seawater from seeping in from the connection gap between the waterproof joint and the hull, ensuring sealing reliability.

[0054] The cable sealing joint is used to achieve a sealed connection between the cable and the hull, ensuring the cable can transmit electricity while preventing seawater from seeping in; it includes a joint body 11, a clamping nut 9 and an anti-pull-out clamp 17.

[0055] Assembly method: The connector body 11 is fixed to the preset hole on the side wall of the main body 3 of the cabin by the cable bolt 10 at one end, and the clamping nut 9 is tightened so that the connector body 11 is pressed and close to the outer periphery of the cable; then the anti-pull-out clamp 17 is installed on the outer side wall of the connector body 11 and clamped and fixed to the cable.

[0056] Among them: the connector body 11 is interference-fitted with the cable, and after being tightened, it forms a sealing barrier to prevent seawater from seeping in through the gap between the cable and the connector; the clamping nut 9 is used to provide clamping force to ensure the sealing effect of the connector body 11; the anti-pull-out clamp 17 can prevent the sealing structure from loosening or failing when the cable is pulled, and ensure the stability of the connection.

[0057] An assembly method for an adjustable ultrasonic transmitter sealing device according to this embodiment includes the following steps:

[0058] Step S1: Pre-process each component;

[0059] Clean the sealing surfaces of all components, including the main body 3, bottom cover, and large waterproof connectors, to ensure there are no oil stains, impurities, burrs, or other foreign objects that may affect the sealing effect; check that each component is intact and ensure that elastic components such as rubber rings 5 ​​and piston sealing gaskets 14 are undamaged.

[0060] Step S2: Assemble the front sealing assembly;

[0061] Place the rubber ring 5 around the head of the transducer 18 to ensure a proper fit of the anti-slip structure; place the transducer 18 inside the main body 3 of the cabin, making the radiating surface of the transducer 18 flush with the front opening of the cabin; insert the limiting pressure ring 7 into the middle of the large-size waterproof connector, align it with the threaded interface at the front of the main body 3 of the cabin, rotate the large-size waterproof connector and gradually tighten it, and press the rubber ring 5 with the limiting pressure ring 7 to complete the front sealing assembly of the large-size waterproof connector.

[0062] Step S3: Assemble the cable sealing connector;

[0063] Place the sealing sleeve over the outside of the cable, pass the cable through the cable sealing joint on the side wall of the main body 3 of the cabin, extend it into the cabin and connect it to the terminal of the transducer 18; tighten the compression nut 9 of the cable sealing joint so that the joint body 11 is tightly against the outer periphery of the cable to form a seal; install the anti-pull-out clamp 17 on the joint body 11 to clamp the cable and complete the cable sealing assembly.

[0064] Step S4: Assemble the heat dissipation buffer module;

[0065] Heat transfer oil is slowly injected into the internal cavity of the main body 3 to ensure that the heat transfer oil completely fills the internal gaps and leaves no air bubbles; micro holes 12 are symmetrically arranged at preset positions on the side of the main body 3 to complete the assembly of the heat dissipation buffer module.

[0066] Step S5: Assemble the tail fixing components;

[0067] Embed the sound-absorbing pad 2 into the annular sealing groove on the rear flange face of the main body 3 of the cabin, and apply sealant evenly to the area where the rear flange face and the sealing pad meet; align the bottom cover with the rear flange face, insert the locking bolts 1 and tighten them one by one to ensure that the bottom cover and the main body 3 of the cabin are firmly connected, the sound-absorbing pad 2 is pressed, and the tail sealing assembly is completed.

[0068] Step S6: Assemble the angle adjustment module;

[0069] Place the sealing gasket 14 on the outer diameter of the movable piston 4, install one end of the movable piston 4 at a preset position on the upper side wall of the main body 3 of the cabin, and fix it initially by thread connection; thread the other end of the movable piston 4 to the main body 3 of the cabin, and connect the other end to the transducer 18 by hinge; install the damping pad 13 at the hinge of the movable piston 4 and the transducer 18 to complete the angle adjustment module assembly; according to the actual anti-fouling requirements, rotate the movable piston 4 to adjust the angle of the transducer 18, fix the angle by the damping pad 13, and complete the overall assembly.

[0070] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable ultrasonic transmitter sealing device, characterized in that: The device includes a main body (3), a front sealing assembly, a rear fixing assembly, a heat dissipation buffer module, a cable sealing connector, and an angle adjustment module. The front sealing assembly is detachably connected to the front end of the main body (3). The rear fixing assembly is sealed to the rear end of the main body (3). The heat dissipation buffer module is built into the internal cavity of the main body (3). The cable sealing connector is set on the side wall of the main body (3) and communicates with the internal cavity of the main body (3). The angle adjustment module is connected to the side wall of the main body (3) and the transducer (18) inside the main body (3).

2. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The front sealing assembly includes a large-size waterproof connector, a rubber ring (5), and a limiting pressure ring (7). The large-size waterproof connector is threaded to the front end of the main body of the cabin (3), and the rubber ring (5) is fitted on the top of the transducer (18). The limiting pressure ring (7) is fitted on the outer wall of the large-size waterproof connector and fits against the end face of the radiating surface of the transducer (18). When the large-size waterproof connector is tightened, the limiting pressure ring (7) presses the rubber ring (5) to form a double seal.

3. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The tail fixing assembly includes a bottom cover, a locking bolt (1) and a sound-absorbing pad (2). The bottom cover is fixed to the rear flange of the main body (3) by the locking bolt (1). The sound-absorbing pad (2) is placed between the bottom cover and the rear flange of the main body (3), and the joint between the rear flange of the main body (3) and the sound-absorbing pad (2) is coated with sealant.

4. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The heat dissipation buffer module includes heat-conducting oil and micro-holes (12) on the side wall of the main body (3). The heat-conducting oil fills the internal cavity of the main body (3). The micro-holes (12) are on the side wall of the main body (3) and are symmetrically arranged to avoid the positions of the cable sealing joint and the angle adjustment module.

5. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The main body of the cabin (3) is made of high-strength corrosion-resistant alloy material, with an anti-corrosion coating on its inner wall and a ring-shaped array of reinforcing ribs on its outer wall.

6. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The angle adjustment module includes two movable pistons (4), a damping pad (13), and a piston sealing gasket (14). The two movable pistons (4) are symmetrically arranged through the upper side wall of the main body of the cabin (3). The piston sealing gasket (14) is arranged between the movable piston (4) and the side wall of the main body of the cabin (3). One end of the movable piston (4) is connected to the main body of the cabin (3) by a thread. The other end of the movable piston (4) is connected to the transducer (18) by a hinge. By rotating the movable piston (4), the length of the movable pistons (4) extending out of the main body of the cabin (3) on both sides is changed, thereby realizing the angle adjustment of the transducer (18).

7. The adjustable ultrasonic transmitter sealing device according to claim 1, characterized in that: The cable sealing connector includes: a connector body (11), a clamping nut (9), and an anti-pull-out clamp (17); the connector body (11) is located at one end of the cable and is interference-fitted with the cable; the clamping nut (9) is sleeved on the middle part of the connector body (11) and threadedly connected to the connector body (11); the anti-pull-out clamp (17) is located on the outer side wall of the connector body (11) and is clamped and fixed to the cable.

8. The adjustable ultrasonic transmitter sealing device according to claim 7, characterized in that: A stepped groove is provided on the outer side wall of one end of the large-size waterproof connector, and the rubber ring (5) is embedded in the stepped groove; an anti-slip fit structure is provided between the head of the transducer (18) and the rubber ring (5) to prevent the transducer (18) from moving axially; a flexible buffer layer is provided between the limiting pressure ring (7) and the end face of the transducer (18) that is in contact with the radiation surface; the limiting pressure ring (7) is transitionally fitted with the inner hole of the large-size waterproof connector.

9. The adjustable ultrasonic transmitter sealing device according to claim 8, characterized in that: An annular sealing groove is provided on the top flange surface of the main body of the cabin (3), and the rubber ring 5 is embedded in the annular sealing groove to form a double sealing structure; a damping pad (13) is provided at the hinge of the movable piston (4) of the angle adjustment module and the main body of the cabin (3), and the angle of the transducer (18) is fixed by pressing the damping pad (13).

10. The assembly method of an adjustable ultrasonic transmitter sealing device according to claim 9, characterized in that: Includes the following steps: Step S1: Pre-process each component; Clean the sealing surfaces of all components, including the main body of the cabin (3), the bottom cover, and the large-size waterproof connector, to ensure that there are no foreign objects such as oil stains, impurities, or burrs that may affect the sealing effect; check whether each component is intact and ensure that elastic components such as rubber rings (5) and sealing gaskets (14) are undamaged. Step S2: Assemble the front sealing assembly; Place the rubber ring (5) around the head of the transducer (18) to ensure that the anti-slip mating structure fits properly; place the transducer (18) inside the main body of the cabin (3) so that the radiation surface of the transducer (18) is flush with the front opening of the cabin; put the limiting pressure ring (7) into the middle of the large-size waterproof connector, align it with the threaded interface at the front of the main body of the cabin (3), rotate the large-size waterproof connector and gradually tighten it, and press the rubber ring (5) by the limiting pressure ring (7). Step S3: Assemble the cable sealing connector; Place the sealing sleeve over the outside of the cable, pass the cable through the cable sealing joint on the side wall of the main body of the cabin (3), extend it into the cabin and connect it to the terminal of the transducer (18); tighten the compression nut (9) of the cable sealing joint so that the joint body (11) is tightly against the outer periphery of the cable to form a seal; install the anti-pull-out clamp (17) on the joint body (11) to clamp the cable. Step S4: Assemble the heat dissipation buffer module; Slowly inject heat transfer oil into the internal cavity of the main body (3) to ensure that the heat transfer oil completely fills the internal gaps and leaves no air bubbles; symmetrically set micro holes (12) at preset positions on the side of the main body (3). Step S5: Assemble the tail fixing components; Embed the sound-absorbing pad (2) into the annular sealing groove of the rear flange face of the main body of the cabin (3), and apply sealant evenly to the contact area between the rear flange face and the sealing pad; align the bottom cover with the rear flange face, insert the locking bolts (1) and tighten them one by one to ensure that the bottom cover is firmly connected to the main body of the cabin (3) and the sound-absorbing pad (2) is pressed. Step S6: Assemble the angle adjustment module; Place the sealing gasket (14) on the outer diameter of the movable piston (4), and install the movable piston (4) at a preset position on the upper side wall of the main body of the cabin (3). Thread one end of the movable piston (4) to the main body of the cabin (3), and connect the other end to the transducer (18) via a hinge. Install a damping pad (13) at the hinge between the movable piston (4) and the transducer (18) to complete the angle adjustment module assembly. Adjust the angle of the transducer (18) by rotating the movable piston (4) according to the actual anti-fouling requirements.

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