A marine growth prevention device for a ship's sea chest
By installing a heating mechanism at the seagate grille, the waste heat from the ship's exhaust gas is used to heat the water flow, preventing marine organisms from attaching and solving the problem of seagate blockage. This achieves efficient anti-fouling and environmentally friendly seagate operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENJIANG QILIN MARINE EQUIP CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-09
AI Technical Summary
Existing underwater gate grilles are prone to being clogged by marine organisms after prolonged use. Traditional antifouling coatings are not effective and pollute the environment.
Design a device for preventing marine organisms from attaching to a ship's seabed gate. The device utilizes the waste heat from the ship's flue gas to heat the water flow and maintains the temperature of the grid baffle through a heating mechanism to prevent marine organisms from attaching.
It effectively prevents marine organisms from attaching, maintains the normal water intake function of the seabed gate, utilizes the waste heat of the ship to improve the practical performance of the device, and reduces environmental pollution.
Smart Images

Figure CN224335809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship subsea gate technology, specifically a device for preventing marine organism attachment on ship subsea gates. Background Technology
[0002] The seagate is the entrance for seawater to enter a ship or offshore platform. Its main function is to provide sufficient seawater for ballast, fire fighting, and cooling, so its normal operation is crucial to the ship. However, various algae float in the ocean, and to prevent them from entering the ship and clogging the equipment, a grille needs to be added to the intake of the seagate.
[0003] Existing submarine gate grates have the following drawbacks during use: marine organisms easily attach to the grates during long-term use, causing blockage and affecting the water intake of the submarine gate. The traditional method is to apply antifouling coating to the surface of the grates. This method is effective in the short term, but the coating on the submarine gate grates will gradually decrease over time, and the antifouling effect will gradually disappear. Moreover, this method pollutes the marine environment. Therefore, this application proposes a device for preventing marine organism attachment to a ship's submarine gate. Utility Model Content
[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0005] Therefore, the technical solution adopted by this utility model is: a device for preventing marine organism attachment at a ship's seabed gate, comprising: a main body and a heating mechanism. The main body includes a frame, a shell fixed on the inner walls of both sides of the frame, a plurality of hollow baffles arranged in an array and connected to the shells, an inlet pipe installed on one side of the frame, and an outlet pipe installed on the other side of the frame.
[0006] The heating mechanism includes a housing, a partition fixed to the inner wall of the housing, a pump installed on the bottom wall of the housing, a heat exchanger set on one side of the housing, support plates fixed in an array on the inner wall of the heat exchanger, a heating element set on one side of the heat exchanger, a connecting pipe with one end connected to the heat exchanger and the other end connected to the heating element, a second conveying pipe with one end connected to the end of the connecting pipe and the other end connected to the water inlet, and a third conveying pipe with one end connected to the inner cavity of the housing and the other end connected to the water outlet.
[0007] The heat exchanger includes a cylinder disposed on one side of the housing, side plates symmetrically fixed on the inner wall of the cylinder, and multiple sets of heat exchange tubes arranged in a ring array and connected to both sides of the side plates. The adjacent support plates are arranged in a centrally symmetrical manner, forming a serpentine flow channel in the inner cavity of the cylinder. An air inlet pipe is installed on one side of the cylinder and connected to one end of the serpentine flow channel, and an exhaust pipe is installed on the other side of the cylinder and connected to the other end of the serpentine flow channel.
[0008] In a preferred embodiment, the present invention can be further configured such that: the inlet of the pump is connected to the space above the partition of the housing via a water pumping pipe, and the outlet of the pump is connected to the cylinder via a water delivery pipe.
[0009] In a preferred embodiment, the present invention can be further configured such that the heating element includes an insulation pipe disposed on one side of the heat exchange element and an electric heating wire installed on the inner wall of the insulation pipe.
[0010] In a preferred embodiment, the present invention can be further configured such that the connecting pipe includes a first conveying pipe with one end connected to the cylinder and the other end connected to the end of the insulation pipe, and a temperature sensor installed on the first conveying pipe and extending into the first conveying pipe.
[0011] In a preferred embodiment, the present invention can be further configured such that a baffle plate is installed on the inner wall of the housing near the water inlet.
[0012] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:
[0013] 1. In this utility model, a shell is fixed on the inner walls of both sides of the frame, and multiple hollow baffles are fixed in an array between the opposing shells. At the same time, water inlet and water outlet are respectively provided on both sides of the frame and communicate with the inner cavity of the shell. A heating mechanism is also provided. Through the cooperation of the box, partition, pump, heat exchanger, first conveying pipe, second conveyor belt and third conveying pipe, the waste heat of the ship's exhaust gas can be used to heat the water. The heated water enters the inner cavity of one side of the shell through the second conveying pipe and the water inlet, and then enters the hollow baffles evenly. It flows in the hollow baffles and raises the temperature of the hollow baffles. By raising the temperature of the baffles, marine organisms can be effectively prevented from attaching to the grid, and the waste heat of the ship can be effectively utilized, which further increases the practical performance.
[0014] 2. In this utility model, a heating element is provided. One end of the heating element is connected to the heat exchange element through a connecting pipe, and the other end is connected to the second conveying pipe. By providing the heating element, when the ship is stopped, the heating element can heat the water flow, thereby ensuring the temperature of the hollow baffle and ensuring that seabed organisms do not attach to the grid when the ship is stopped. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional schematic diagram of the main structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the main structure of the present utility model;
[0018] Figure 4 This is a cross-sectional schematic diagram of part of the heating mechanism of this utility model.
[0019] Figure label:
[0020] 100. Main structure; 110. Frame; 120. Shell; 121. Baffle plate; 130. Hollow baffle; 140. Inlet pipe; 150. Outlet pipe;
[0021] 200. Heating mechanism; 210. Box body; 220. Partition plate; 230. Pump; 231. Water pumping pipe; 232. Water supply pipe; 240. Heat exchanger; 241. Cylinder; 2411. Air inlet pipe; 2412. Exhaust pipe; 242. Side plate; 243. Heat exchange tube; 250. Support plate; 260. Heating element; 261. Insulation pipe; 262. Heating wire; 270. Connecting pipe; 271. First conveying pipe; 272. Temperature sensor; 280. Second conveying pipe; 290. Third conveying pipe. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0023] Some embodiments of this utility model are described below with reference to the accompanying drawings.
[0024] Example 1:
[0025] Combination Figure 1-4 As shown, this embodiment provides a marine organism prevention device for a ship's seabed door, including: a main body 100 and a heating mechanism 200.
[0026] The main body 100 includes a frame 110, a housing 120 fixed on the inner walls of both sides of the frame 110, a plurality of hollow baffles 130 arranged in an array and connected to the housing 120, a water inlet 140 installed on one side of the frame 110, and a water outlet 150 installed on the other side of the frame 110.
[0027] The frame 110 is used to install other components. Ear plates are symmetrically fixed on both sides of the frame 110 to facilitate the installation of the frame 110 on the sea gate. The shell 120 is used to install the hollow baffle 130. The two ends of the hollow baffle 130 are connected to the inner cavities of the two shells 120, so that hot water can be sent in through the inner cavity of one shell 120 and then sent out through the inner cavity of the other shell 120. When the hot water passes through the hollow baffle 130, it can heat the hollow baffle 130 and increase its temperature. By increasing the temperature of the baffle, marine organisms can be effectively prevented from attaching to the grid.
[0028] The inlet 140 is used to send hot water into the inner cavity of the shell 120 on one side, and the outlet 150 is used to discharge the water after absorbing heat. In addition, a baffle plate 121 is installed on the inner wall of the shell 120 near the inlet 140 to turbulent the hot water sent into the inner cavity of the shell 120 so that it can enter the inner cavity of each hollow baffle 130 evenly.
[0029] The heating mechanism 200 is used to store and heat water flow, including a housing 210, a partition 220 fixed on the inner wall of the housing 210, a pump 230 installed on the bottom wall of the inner wall of the housing 210, a heat exchanger 240 disposed on one side of the housing 210, support plates 250 fixed in an array on the inner wall of the heat exchanger 240, a heating element 260 disposed on one side of the heat exchanger 240, a connecting pipe 270 with one end connected to the heat exchanger 240 and the other end connected to the heating element 260, a second delivery pipe 280 with one end connected to the end of the connecting pipe 270 and the other end connected to the water inlet 140, and a third delivery pipe 290 with one end connected to the inner cavity of the housing 210 and the other end connected to the water outlet 150.
[0030] The housing 210 is divided into two spaces by a partition 220. The space above the partition 220 is used to store water, and the space below the partition 220 is used to install a pump 230. The pump 230 is used to pump the water out of the housing 210 to form a water circulation. The inlet of the pump 230 is connected to the space above the partition 220 of the housing 210 through a water pumping pipe 231. The outlet of the pump 230 is connected to the cylinder 241 through a water supply pipe 232, so as to facilitate the pumping of water from the housing 210 into the heat exchanger 240.
[0031] The heat exchanger 240 includes a cylindrical body 241 disposed on one side of the housing 210, side plates 242 symmetrically fixed to the inner wall of the cylindrical body 241, and multiple sets of heat exchange tubes 243 arranged in a ring array and connecting both sides of the side plates 242. The side plates 242 are used to install the heat exchange tubes 243, which are supported by thermally conductive materials to facilitate heat exchange between high-temperature flue gas and water flow. Adjacent support plates 250 are arranged centrally symmetrically to form a serpentine flow channel in the inner cavity of the cylindrical body 241. At the same time, an air inlet pipe 2411 is installed on one side of the cylindrical body 241 and connects to one end of the serpentine flow channel. On the other side of 41, an exhaust pipe 2412 is installed and connected to the other end of the serpentine flow channel. Both the intake pipe 2411 and the exhaust pipe 2412 are connected to the flue gas duct on the ship. Through this setting, the high-temperature flue gas on the ship is sent into the serpentine flow channel through the intake pipe 2411 and flows in the serpentine flow channel to exchange heat with the water flow in the heat exchange tube 243, thereby increasing the temperature of the water flow in the heat exchange tube 243. After cooling, the high-temperature flue gas returns to the flue gas duct through the exhaust pipe 2412. This can utilize the waste heat in the ship's flue gas duct and further increase its practicality.
[0032] The heating element 260 is used to heat the water flow when the ship is stopped. It includes an insulation pipe 261 set on one side of the heat exchanger 240 and an electric heating wire 262 installed on the inner wall of the insulation pipe 261. In addition, the connecting pipe 270 includes a first delivery pipe 271 with one end connected to the cylinder 241 and the other end connected to the end of the insulation pipe 261, and a temperature sensor 272 installed on the first delivery pipe 271 and extending into the first delivery pipe 271. The first delivery pipe 271 is used to send the water flow through the heat exchange ring into the insulation pipe 261. The temperature sensor 272 is used to detect the temperature of the water flow through the first delivery pipe 271. When the water flow temperature is lower than the set value, the electric heating wire 262 is activated to further heat the water flow and increase the water flow temperature. This ensures that the surface of the hollow baffle 130 is maintained at a certain temperature after the water flow enters the hollow baffle 130, thus preventing seabed organisms from attaching.
[0033] The second delivery pipe 280 is used to send hot water into the inner cavity of the side shell 120, and the third delivery pipe 290 is used to send the cooled water back into the inner cavity of the tank 210, thus forming a circulation.
[0034] The working principle and usage process of this utility model are as follows: In use, the device is installed on the seawall of a ship, and the air inlet pipe 2411 and exhaust pipe 2412 are connected to the ship's flue gas pipe. During ship navigation, high-temperature flue gas enters the inner cavity of the cylinder 241 through the air inlet pipe 2411 and flows in the serpentine flow channel formed by the side plate 242. At this time, the pump 230 starts, drawing water from the tank 210 and sending it into the inner cavity of the cylinder 241 through the water delivery pipe 232. The water flows into the heat exchange tube 243, where it exchanges heat with the high-temperature flue gas, absorbing heat and raising the temperature. The heated water is then sent to the ship via the first delivery pipe 271 and the second delivery pipe 280. The water flows into the inner cavity of one side shell 120, and then, under the action of the baffle, it enters the hollow baffle 130 evenly, raising the temperature of the hollow baffle 130. By raising the temperature of the baffle, marine organisms can be effectively prevented from attaching to the grid. Afterward, the water flows through the inner cavity of the other side shell 120 into the third delivery pipe 290, and then returns to the inner cavity of the tank 210 through the third delivery pipe 290, forming a circulation. When the ship is stopped, the temperature sensor 272 detects that the water temperature in the first delivery pipe 271 is lower than the set value, and activates the heating wire 262 to heat the water flowing through the heat preservation pipe 261, keeping it at the set temperature, so that marine organisms will not attach to the grid when the ship is stopped.
[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A device for preventing marine organism attachment at a ship's seabed gate, comprising: The main body (100) and heating mechanism (200) are characterized in that the main body (100) includes a frame (110), a shell (120) fixed on the inner walls of both sides of the frame (110), a plurality of hollow baffles (130) arranged in an array and connected to the shell (120), a water inlet (140) installed on one side of the frame (110) and a water outlet (150) installed on the other side of the frame (110). The heating mechanism (200) includes a housing (210), a partition (220) fixed on the inner wall of the housing (210), a pump (230) installed on the bottom wall of the inner wall of the housing (210), a heat exchanger (240) disposed on one side of the housing (210), support plates (250) fixed in an array on the inner wall of the heat exchanger (240), a heating element (260) disposed on one side of the heat exchanger (240), a connecting pipe (270) with one end connected to the heat exchanger (240) and the other end connected to the heating element (260), a second conveying pipe (280) with one end connected to the end of the connecting pipe (270) and the other end connected to the water inlet (140), and a third conveying pipe (290) with one end connected to the inner cavity of the housing (210) and the other end connected to the water outlet (150). The heat exchanger (240) includes a cylinder (241) disposed on one side of the housing (210), side plates (242) symmetrically fixed on the inner wall of the cylinder (241), and multiple sets of heat exchange tubes (243) arranged in a ring array and connected to both sides of the side plates (242). The adjacent support plates (250) are arranged in a centrally symmetrical manner, forming a serpentine flow channel in the inner cavity of the cylinder (241). An air inlet pipe (2411) is installed on one side of the cylinder (241) and connected to one end of the serpentine flow channel. An exhaust pipe (2412) is installed on the other side of the cylinder (241) and connected to the other end of the serpentine flow channel.
2. The anti-marine organism attachment device for a ship's seabed gate according to claim 1, characterized in that, The inlet of the pump (230) is connected to the space above the partition (220) of the box (210) through the pumping pipe (231), and the outlet of the pump (230) is connected to the cylinder (241) through the water supply pipe (232).
3. The anti-marine organism attachment device for a ship's seabed gate according to claim 1, characterized in that, The heating element (260) includes an insulation pipe (261) disposed on one side of the heat exchanger (240) and an electric heating wire (262) installed on the inner wall of the insulation pipe (261).
4. The anti-marine organism attachment device for a ship's seabed gate according to claim 3, characterized in that, The connecting pipe (270) includes a first conveying pipe (271) with one end connected to the cylinder (241) and the other end connected to the end of the insulation pipe (261), and a temperature sensor (272) installed on the first conveying pipe (271) and extending into the first conveying pipe (271).
5. A device for preventing marine organism attachment at a ship's seabed gate according to claim 1, characterized in that, A baffle plate (121) is installed on the inner wall of the housing (120) near the water inlet (140).