Ultraviolet light source underwater irradiation equipment

Abstract

The utility model discloses ultraviolet light source underwater irradiation equipment, which belongs to the technical field of underwater irradiation equipment and comprises an irradiation device, a connecting device and a cable device, the connecting device is arranged in the middle, two ends of the connecting device are respectively connected with the irradiation device and the cable device, and the irradiation device comprises a light-transmitting cover. A vertical irradiation module and a horizontal irradiation module are arranged in the light-transmitting cover. According to the device, the biological activity of microbial cell nucleic acid can be changed by utilizing ultraviolet rays with the wavelength range of 100nm-280nm, so that the structure of the microbial cell nucleic acid is changed until the microbial cell nucleic acid is dead, and a microbial film can be effectively killed and plankton attachment can be prevented by irradiating the surface of underwater equipment by using an ultraviolet LED within a certain frequency, so that normal operation and measurement accuracy of the equipment are ensured, and the device is suitable for popularization and application. The ultraviolet LED is used for irradiating the surface of underwater equipment, so that microorganism attachment can be effectively prevented, the reliability of the equipment is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to underwater irradiation equipment's technical field especially relates to a kind of ultraviolet light source underwater irradiation equipment. BACKGROUND

[0002] At present, conventional underwater equipment, such as marine ecological monitoring sensor, underwater camera, sonar equipment, underwater communication equipment antenna, underwater cable joint, underwater lighting lamp, underwater bridge structure monitoring equipment, etc., is the tool for important activities such as marine scientific research, environmental protection, underwater monitoring, etc.

[0003] For the above related technology, the applicant finds that with the increasingly serious pollution of marine ecological environment, especially nearshore, the surface of underwater equipment is easily attached by microorganisms, algae and shellfish, which seriously affects the function and service life of the equipment. When these underwater equipment is placed underwater for a long time, due to the action of physical and chemical factors, a layer of adjustment film will be formed on the surface of the equipment, and plankton will attach and reproduce on it to form a microbial film, resulting in problems such as instrument signal distortion, reliability reduction and mechanical transmission mechanism failure. The commonly used anti-attachment methods such as mechanical structure wiping, chemical agent killing and reducing surface energy are limited by many factors, and frequent manual maintenance is required, which consumes a lot of manpower, material and financial resources. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of ultraviolet light source underwater irradiation equipment according to the deficiency of prior art, utilize the biological activity of the nucleic acid of microorganism cell nucleus that wavelength range is in 100nm~280nm ultraviolet can change, lead to its structure variation until death, by using ultraviolet LED irradiation underwater equipment surface in a certain frequency, can effectively kill microbial film, prevent the attachment of plankton, so as to ensure the normal operation and measurement accuracy of equipment, and then use ultraviolet LED irradiation underwater equipment surface can effectively prevent microbial attachment, and then improve the reliability and service life of equipment.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A kind of ultraviolet light source underwater irradiation equipment, including irradiation device, connecting device and cable device, connecting device is placed in intermediate position, the two ends of connecting device are connected with irradiation device and cable device respectively, and irradiation device includes light-transmitting cover, and vertical irradiation module and horizontal irradiation module are arranged in light-transmitting cover.

[0007] Furthermore, the vertical irradiation module is placed inside the light-transmitting cover at one end away from the connecting device. The vertical irradiation module includes a vertical base, a vertical drive circuit board at the bottom of the vertical base, a vertical light source circuit board at the top of the vertical base, and a vertical ultraviolet LED on the vertical light source circuit board. The vertical drive circuit board, the vertical light source circuit board, and the vertical ultraviolet LED are electrically connected to each other.

[0008] Furthermore, the horizontal irradiation module is positioned between the vertical irradiation module and the connecting device. The horizontal irradiation module includes a horizontal base, a horizontal connecting circuit board on the top of the horizontal base, which is electrically connected to the vertical drive circuit board, a horizontal drive circuit board on the bottom of the horizontal base, a horizontal light source circuit board on the side of the horizontal base, a horizontal ultraviolet LED on the horizontal light source circuit board, and a horizontal ultraviolet LED on the horizontal drive circuit board. The horizontal drive circuit board is connected to the horizontal connecting circuit board, and the horizontal light source circuit board and the horizontal ultraviolet LED are electrically connected to each other.

[0009] Furthermore, the emission wavelengths of the vertical and horizontal ultraviolet LEDs are between 100nm and 280nm.

[0010] Furthermore, the number of vertical illumination modules is at most one, and the number of horizontal illumination modules is at least one.

[0011] Furthermore, the connecting device includes a cylinder, a main control circuit board is provided inside the cylinder, the main control circuit board is electrically connected to the vertical irradiation module and the horizontal irradiation module, and a fixed shaft is provided inside the cylinder. The fixed shaft is arranged in segments and passes through the horizontal irradiation module and the vertical irradiation module in sequence.

[0012] Furthermore, the cylindrical body and the light-transmitting cover are interconnected, and several sealing rings are provided at the connection point between the cylindrical body and the light-transmitting cover.

[0013] Furthermore, the cable device includes a cable body and a cable holder. The cable holder is threadedly connected to the cylinder. The end of the cable holder away from the cylinder is provided with a cable protection connector. The cable body passes through the cable protection connector and the cable holder in sequence and is electrically connected to the main control circuit board.

[0014] In summary, compared with the prior art, the beneficial effects of the above technical solution are:

[0015] (1) Ultraviolet light with a wavelength range of 100nm to 280nm can alter the biological activity of nucleic acid in microbial cells, causing structural changes and even death. By using ultraviolet LEDs to irradiate the surface of underwater equipment within a certain frequency range, microbial films can be effectively killed and plankton can be prevented from attaching, thereby ensuring the normal operation and measurement accuracy of the equipment. Furthermore, using ultraviolet LEDs to irradiate the surface of underwater equipment can effectively prevent microbial attachment, thereby improving the reliability and service life of the equipment.

[0016] (2) The working time and mode of the ultraviolet LED can be preset. It can be set to periodic lighting, constant lighting, and manual lighting. The working status of the ultraviolet LED control module is controlled by the main control circuit board. The ultraviolet LED emits ultraviolet rays of a specific wavelength, which effectively inhibits the formation of biofilm on the surface of underwater objects and achieves the purpose of preventing biofilm adhesion.

[0017] (3) Application scenarios are applicable to various underwater facilities, such as marine ecological monitoring sensors, underwater cameras, sonar equipment, underwater communication equipment antennas, underwater cable joints, underwater lighting, underwater bridge structure monitoring equipment, etc., to prevent biological pollution, keep the surface of the facilities clean, and extend their service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a top view structural diagram of the vertical illumination module in an embodiment of this utility model;

[0020] Figure 3 This is a bottom view structural diagram of the vertical illumination module in an embodiment of this utility model;

[0021] Figure 4 This is a top view structural diagram of the horizontal illumination module in an embodiment of this utility model;

[0022] Figure 5 This is a bottom view structural diagram of the vertical illumination module in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the fixed shaft in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Irradiation device; 11. Light-transmitting cover; 12. Vertical irradiation module; 121. Vertical base; 122. Vertical drive circuit board; 123. Vertical light source circuit board; 124. Vertical ultraviolet LED; 13. Horizontal irradiation module; 131. Horizontal base; 132. Horizontal connecting circuit board; 133. Horizontal drive circuit board; 134. Horizontal light source circuit board; 135. Horizontal ultraviolet LED; 2. Connecting device; 21. Cylinder; 22. Fixed shaft; 3. Cable device; 31. Cable body; 32. Cable holder; 33. Cable protection connector. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to all the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] This utility model discloses an underwater ultraviolet light source irradiation device. Since parameter acquisition components such as underwater sensor optical lenses and electrodes are easily affected by biofouling, ultraviolet light irradiation is used to destroy the DNA of organisms to prevent biofouling. This underwater ultraviolet light source irradiation device can be used for devices susceptible to biofouling, such as underwater cameras, sonar equipment, underwater communication equipment antennas, underwater cable joints, underwater lighting, and underwater bridge structure monitoring equipment.

[0027] Reference Figure 1 An underwater ultraviolet light source irradiation device includes an irradiation device 1, a connecting device 2, and a cable device 3. The connecting device 2 is located in the middle, and its two ends are connected to the irradiation device 1 and the cable device 3, respectively. The irradiation device 1 includes a light-transmitting cover 11, and a vertical irradiation module 12 and a horizontal irradiation module 13 are provided inside the light-transmitting cover 11.

[0028] Reference Figure 1 , Figure 2 and Figure 3 The vertical irradiation module 12 is placed inside the light-transmitting cover 11 at one end away from the connecting device 2. The vertical irradiation module 12 includes a vertical base 121. A vertical drive circuit board 122 is provided at the bottom of the vertical base 121, and a vertical light source circuit board 123 is provided at the top of the vertical base 121. A vertical ultraviolet LED 124 is provided on the vertical light source circuit board 123. The vertical drive circuit board 122 is electrically connected to the vertical light source circuit board 123 and the vertical ultraviolet LED 124.

[0029] Reference Figure 1 , Figure 4 and Figure 5The horizontal irradiation module 13 is positioned between the vertical irradiation module 12 and the connecting device 2. The horizontal irradiation module 13 includes a horizontal base 131. A horizontal connecting circuit board 132 is provided on the top of the horizontal base 131. The horizontal connecting circuit board 132 is electrically connected to the vertical drive circuit board 122. A horizontal drive circuit board 133 is provided at the bottom of the horizontal base 131. A horizontal light source circuit board 134 is provided on the side of the horizontal base 131. A horizontal ultraviolet LED 135 is provided on the horizontal light source circuit board 134. A horizontal ultraviolet LED 135 is provided on the horizontal drive circuit board 133. The horizontal drive circuit board 133 is connected to the horizontal connecting circuit board 132, and the horizontal light source circuit board 134 and the horizontal ultraviolet LED 135 are electrically connected to each other.

[0030] The vertical ultraviolet LED124 and the horizontal ultraviolet LED135 emit light with wavelengths between 100nm and 280nm. Ultraviolet light in this wavelength range can alter the biological activity of nucleic acids in microbial cells, causing structural changes and even death. By irradiating the surface of underwater equipment with ultraviolet LEDs within a certain frequency range, microbial films can be effectively killed, preventing the attachment of plankton, thus ensuring the normal operation and measurement accuracy of the equipment. Furthermore, irradiating the surface of underwater equipment with ultraviolet LEDs can effectively prevent microbial adhesion, thereby improving the reliability and lifespan of the equipment.

[0031] The UV LED's working time and mode can be preset, allowing for periodic lighting, constant lighting, and manual lighting. The main control circuit board controls the vertical irradiation module 12 and the horizontal irradiation module 13, which can also be collectively referred to as the UV LED control module, thereby controlling their operating status. The UV LED emits ultraviolet light of a specific wavelength, effectively inhibiting the formation of biofilms on underwater object surfaces, achieving the purpose of preventing biofouling. Application scenarios include various underwater facilities, such as marine ecological monitoring sensors, underwater cameras, sonar equipment, underwater communication equipment antennas, underwater cable joints, underwater lighting, and underwater bridge structure monitoring equipment, preventing biofouling, keeping facility surfaces clean, and extending service life.

[0032] The number of vertical illumination modules 12 is at most one, and the number of horizontal illumination modules 13 is at least one. In this embodiment, there is one vertical illumination module 12 and three horizontal illumination modules 13.

[0033] Reference Figure 1 , Figure 6 The connecting device 2 includes a cylinder 21, inside which is a main control circuit board. The main control circuit board is electrically connected to the vertical irradiation module 12 and the horizontal irradiation module 13. Inside the cylinder 21 is a fixed shaft 22, which is arranged in segments and passes through the horizontal irradiation module 13 and the vertical irradiation module 12 in sequence.

[0034] The cylindrical body 21 is connected to the light-transmitting cover 11, and several sealing rings are provided at the connection between the cylindrical body 21 and the light-transmitting cover 11. In this embodiment, three sealing rings are provided.

[0035] The cable device 3 includes a cable body 31 and a cable holder 32. The cable holder 32 is threadedly connected to the cylinder 21. The end of the cable holder 32 away from the cylinder 21 is provided with a cable protection connector 33. The cable body 31 passes through the cable protection connector 33 and the cable holder 32 in sequence and is electrically connected to the main control circuit board.

[0036] An underwater ultraviolet light source irradiation device is provided. By setting up a drive circuit, the device can be controlled to switch on and off and communicate. By setting up power supply and communication cables, it can operate independently. The irradiation device 1 adopts a "base + circuit board + wire connection" structure, which is simple and reliable. The light source is independently controlled by current, which makes the light emission stable and has a long life. In this embodiment, 275nm ultraviolet light is preferably used, which is less absorbed by the propagation medium.

[0037] Reference Figure 1 An underwater ultraviolet light source irradiation device is composed of an irradiation device 1, a connecting device 2, and a cable device 3. The main control circuit board is located inside the metal cylinder 21, and the cable body 31 is connected to the main control circuit board inside the cylinder 21. The control module of the vertical ultraviolet LED 124 and the horizontal ultraviolet LED 135 is located inside the light-transmitting cover 11.

[0038] Reference Figure 2 and Figure 3 The vertical illumination module 12 includes a vertical base 121, a vertical drive circuit board 122 mounted on the bottom of the vertical base 121, and a vertical light source circuit board 123 mounted in the top groove of the vertical base 121. A vertical ultraviolet LED 124 is provided on the vertical light source circuit board 123, and a drive circuit for driving the vertical ultraviolet LED 124 is provided on the vertical drive circuit board 122. Inside the vertical base 121, the vertical drive circuit board 122 is connected to the vertical light source circuit board 123.

[0039] Reference Figure 4 and Figure 5 The horizontal irradiation module 13 includes a horizontal base 131, a horizontal drive circuit board 133 mounted on the bottom of the horizontal base 131, a horizontal connecting circuit board 132 mounted on the top of the horizontal base 131, and a horizontal light source circuit board 134 mounted in a groove on the side of the horizontal base 131. A horizontal ultraviolet LED 135 is provided on the horizontal light source circuit board 134, and a drive circuit for driving the horizontal ultraviolet LED 135 is provided on the horizontal drive circuit board 133. Inside the horizontal base 131, the horizontal drive circuit board 133 is connected to the horizontal connecting circuit board 132 and the horizontal light source circuit board 134.

[0040] Reference Figure 1 and Figure 6 The metal cylinder 21 is hollow and is used to house the main control circuit board. An annular groove is provided on the upper surface of the metal cylinder 21 to hold the connected circuit board. A mounting hole is provided in the center of the annular groove for mounting the fixing shaft 22. The fixing shaft 22 is segmented, with one fixing shaft 22 corresponding to each UV LED control module. An annular groove is provided on the fixing shaft 22, and a fixing hole is provided on the UV LED control module. Screws are pressed into the annular groove through the fixing hole to fix the module to the fixing shaft 22. Each fixing shaft 22 has two parallel cutting planes for clamping during installation. Grooves 1, 2, and 3 are radially provided on the upper outer periphery of the metal cylinder 21 to house sealing rings 1, 2, and 3. An internal thread is provided on the lower inner side of the metal cylinder 21 for connection with the cable holder 32.

[0041] The cable holder 32 is connected to the metal cylinder 21. A cable protection connector 33 is placed below the cable holder 32. The cable body 31 passes through the cable protection connector 33 and the cable holder 32 and is connected to the inside of the metal cylinder 21 for power supply and communication.

[0042] A radial groove is provided on the inner side of the lower end of the light-transmitting cover 11, which fits into the sealing ring three. A stepped arc surface is provided above the groove, which fits into the sealing ring one and the sealing ring two. A plastic ring is provided between the contact plane of the light-transmitting cover 11 and the cylinder 21.

[0043] The wavelength of the ultraviolet LED emitted light is 275nm. Each device can have a maximum of 4 ultraviolet LED control modules and a minimum of 1 module. Among them, the vertical irradiation module 12 can only be installed once, and the rest are horizontal irradiation modules 13.

[0044] The implementation principle of the ultraviolet light source underwater irradiation device in this embodiment of the utility model is as follows:

[0045] This utility model patent provides an underwater ultraviolet light source irradiation device. The device is composed of an irradiation device 1, a connecting device 2, and a cable device 3. The main control circuit board is located inside the metal cylinder 21, and the cable body 31 is connected to the main control circuit board inside the cylinder 21. The light-transmitting cover 11 is equipped with a vertical irradiation module 12 and a horizontal irradiation module 13.

[0046] This utility model relates to an underwater ultraviolet irradiation device, which aims to prevent the formation of biofilm on the surface of underwater objects through ultraviolet irradiation. The following are specific embodiments of this device:

[0047] I. Equipment Structure Description:

[0048] 1. Irradiation device 1: The light-transmitting cover 11 is made of quartz glass to ensure effective penetration of ultraviolet rays. The bottom of the light-transmitting cover 11 has a groove that cooperates with the sealing ring 3 installed in the groove 3 on the upper outer periphery of the metal cylinder 21. This is used for fixing and waterproofing. A stepped arc surface is set above the groove, which fits with the sealing ring 1 and sealing ring 2 installed on the metal cylinder 21. Multiple protections ensure waterproof performance.

[0049] 2. Connecting device 2: An annular groove is provided on the upper plane of the cylinder 21 for placing the main control circuit board. A fixing hole is provided in the middle for fixing the installation of the shaft 22. The lower end of the cylinder 21 is connected to the cable seat 32.

[0050] 3. Cable assembly 3: includes cable body 31, cable protection connector 33 and cable socket 32, the cable body 31 passes through the cable protection connector 33 and cable socket 32 ​​and is connected to the internal circuit.

[0051] 4. Ultraviolet LED control module:

[0052] The horizontal irradiation module 13 includes a horizontal base 131, a horizontal drive circuit board 133, a horizontal connecting circuit board 132, and a horizontal light source circuit board 134. The horizontal drive circuit board 133 has circuitry for driving a horizontal ultraviolet LED 135. Both the horizontal drive circuit board 133 and the horizontal connecting circuit board 132 have electronic components for contacting and forming electrical connections with other modules. The horizontal light source circuit board 134 is equipped with a horizontal ultraviolet LED 135 emitting a wavelength of 275nm.

[0053] Vertical illumination module 12: Similar to horizontal illumination module 13, but with a vertical light source circuit board 123 mounted in the top recess of the vertical base 121 and a vertical drive circuit board 122 mounted in the lower recess. A vertical ultraviolet LED 124 with an emission wavelength of 275nm is mounted on the vertical light source circuit board 123.

[0054] II. Assembly Steps

[0055] 1. Install the horizontal drive circuit board 133 or the vertical drive circuit board 122 on the bottom of the horizontal base 131 or the vertical base 121, place the horizontal connecting circuit board 132 on the top of the horizontal base 131 or the bottom of the vertical base 121, and place the horizontal light source circuit board 134 or the vertical light source circuit board 123 in the side or top groove.

[0056] 2. Install the horizontal ultraviolet LED 135 onto the horizontal light source circuit board 134, and install the vertical ultraviolet LED 124 onto the vertical light source circuit board 123.

[0057] 3. Install the vertical drive circuit board 122 and the vertical light source circuit board 123 to their corresponding positions, and install the vertical drive circuit board 122 and the horizontal connection circuit board 132, the horizontal drive circuit board 133 and the horizontal light source circuit board 134 to their corresponding positions, and connect each circuit board with wires.

[0058] 4. Connect the fixing shafts 22 used to fix each UV LED control module in sequence, and install them as a whole into the fixing holes at the upper end of the metal cylinder 21.

[0059] 5. Fix the assembled UV LED control module above the metal cylinder 21 using the fixing shaft 22. Use screws to press into the annular groove on the fixing shaft 22 through the fixing holes on the module to achieve a stable installation. At the same time, make the horizontal connecting circuit board 132 of every two adjacent UV LED control modules contact the vertical drive circuit board 122. The connecting devices on the circuit board are pressed together with the contacting circuit board to achieve electrical connection.

[0060] 6. Place sealing rings one, two, and three in the grooves one, two, and three on the outer periphery of the upper end of the metal cylinder 21 to ensure the airtightness between the light-transmitting cover 11 and the metal cylinder 21.

[0061] 7. Connect the cable body 31 to the main control circuit board and fix it to the lower end of the metal cylinder 21 through the cable holder 32.

[0062] III. Working Principle

[0063] The working time and mode of the horizontal ultraviolet LED135 and the vertical ultraviolet LED124 can be preset, and can be set to periodic lighting, constant lighting, and manual lighting. The working status of the horizontal ultraviolet LED135 and the vertical ultraviolet LED124 is controlled by the main control circuit board. The horizontal ultraviolet LED135 and the vertical ultraviolet LED124 emit ultraviolet rays of a specific wavelength of 275nm, which effectively inhibits the formation of biofilm on the surface of underwater objects and achieves the purpose of preventing bioattachment.

[0064] Application scenarios are suitable for various underwater facilities, such as marine ecological monitoring sensors, underwater cameras, sonar equipment, underwater communication equipment antennas, underwater cable joints, underwater lighting, underwater bridge structure monitoring equipment, etc., to prevent biological contamination, keep the surface of the facilities clean, and extend their service life.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An underwater ultraviolet irradiation device, characterized in that: It includes an irradiation device (1), a connecting device (2) and a cable device (3). The connecting device (2) is located in the middle position. The two ends of the connecting device (2) are connected to the irradiation device (1) and the cable device (3) respectively. The irradiation device (1) includes a light-transmitting cover (11). The light-transmitting cover (11) is equipped with a vertical irradiation module (12) and a horizontal irradiation module (13).

2. The underwater ultraviolet irradiation device according to claim 1, characterized in that: The vertical irradiation module (12) is placed inside the light-transmitting cover (11) at one end away from the connecting device (2). The vertical irradiation module (12) includes a vertical base (121), a vertical driving circuit board (122) is provided at the bottom of the vertical base (121), a vertical light source circuit board (123) is provided at the top of the vertical base (121), and a vertical ultraviolet LED (124) is provided on the vertical light source circuit board (123). The vertical driving circuit board (122) is electrically connected to the vertical light source circuit board (123) and the vertical ultraviolet LED (124).

3. The underwater ultraviolet irradiation device according to claim 2, characterized in that: The horizontal irradiation module (13) is positioned between the vertical irradiation module (12) and the connecting device (2). The horizontal irradiation module (13) includes a horizontal base (131), a horizontal connecting circuit board (132) on the top of the horizontal base (131), the horizontal connecting circuit board (132) being electrically connected to the vertical drive circuit board (122), a horizontal drive circuit board (133) on the bottom of the horizontal base (131), a horizontal light source circuit board (134) on the side of the horizontal base (131), a horizontal ultraviolet LED (135) on the horizontal light source circuit board (134), and a horizontal ultraviolet LED (135) on the horizontal drive circuit board (133). The horizontal drive circuit board (133) is connected to the horizontal connecting circuit board (132), and the horizontal light source circuit board (134) and the horizontal ultraviolet LED (135) are electrically connected to each other.

4. The underwater irradiation device using an ultraviolet light source according to claim 3, characterized in that: The emitted light wavelengths of the vertical ultraviolet LED (124) and the horizontal ultraviolet LED (135) are between 100nm and 280nm.

5. The underwater ultraviolet irradiation device according to claim 1, characterized in that: The number of vertical illumination modules (12) is at most one, and the number of horizontal illumination modules (13) is at least one.

6. The underwater ultraviolet irradiation device according to claim 1, characterized in that: The connecting device (2) includes a cylinder (21), a main control circuit board is provided inside the cylinder (21), the main control circuit board is electrically connected to the vertical irradiation module (12) and the horizontal irradiation module (13), a fixed shaft (22) is provided inside the cylinder (21), the fixed shaft (22) is arranged in segments, and the fixed shaft (22) passes through the horizontal irradiation module (13) and the vertical irradiation module (12) in sequence.

7. An underwater ultraviolet irradiation device according to claim 6, characterized in that: The cylindrical body (21) is connected to the light-transmitting cover (11), and several sealing rings are provided at the connection position between the cylindrical body (21) and the light-transmitting cover (11).

8. An underwater ultraviolet irradiation device according to claim 6, characterized in that: The cable device (3) includes a cable body (31) and a cable seat (32). The cable seat (32) is threadedly connected to the cylinder (21). The end of the cable seat (32) away from the cylinder (21) is provided with a cable protection connector (33). The cable body (31) passes through the cable protection connector (33) and the cable seat (32) in sequence and is electrically connected to the main control circuit board.

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