Closed cooling water internal circulation device for gasoline outdoor unit of unmanned ship

Abstract

The utility model discloses a closed cooling water internal circulation device for a gasoline outdoor unit of an unmanned ship, which relates to the technical field of outdoor unit cooling and comprises an outdoor unit, a main water cooling mechanism, a standby water cooling mechanism and a constant temperature mechanism. Through cooperation of the main water cooling mechanism, the standby water cooling mechanism and the constant temperature mechanism, internal circulation of cooling water used for cooling the outdoor unit is achieved, and compared with the prior art, the problems that due to direct use of external cooling water, the water temperature is too low, and due to thermal stress and cavitation caused by too high internal temperature, the service life is shortened are solved; the marine gasoline outdoor unit solves the problem that the marine gasoline outdoor unit cannot be used due to frequent flameout of a water body with complex water body components and more silt content, salt content and impurities, and meanwhile, the air cooling and water cooling combined internal circulation device is adopted, so that the problem that the temperature of internal circulation water is difficult to control is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of external engine cooling technology, and in particular to a closed-loop cooling water internal circulation device for gasoline external engines of unmanned vessels. Background Technology

[0002] A marine gasoline outboard motor is a combination of a gasoline outboard motor and a propeller, mounted externally at the stern of the boat. The propeller extends into the water and rotates to propel the boat forward. Due to its high speed and power, this equipment typically uses an open-loop external water cooling system. A water inlet is located on one side of the propeller in the water, and the machine's rotation drives an impeller to draw water into the system for cooling. The water is then discharged directly to the outside.

[0003] This cooling solution is generally suitable for oceans, lakes, and water bodies with few impurities. However, it is not suitable for water bodies like the Yellow River, which have extremely high silt content or a large amount of floating debris. It is very easy to clog waterways and aggravate wear, causing the equipment to shut down and fail to work properly.

[0004] To address the aforementioned issues, this application proposes a closed-loop cooling water internal circulation device for the gasoline-powered external engine of an unmanned vessel. Utility Model Content

[0005] This invention provides a closed-loop cooling water internal circulation device for gasoline-powered external engines of unmanned vessels to solve the aforementioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides a closed-loop cooling water internal circulation device for an unmanned vessel gasoline external engine, including an external engine, on which an inlet and an outlet are installed. The device is characterized by further including a main water cooling mechanism, a backup water cooling mechanism, and a constant temperature mechanism.

[0007] The main water cooling mechanism includes an air-cooled water tank, a water pipe is fixedly connected between the air-cooled water tank and the water outlet, a water pipe is fixedly connected between the air-cooled water tank and the water inlet, and a main water pump is installed on the water pipe.

[0008] Preferably, fins are fixedly connected to the outer surface of the air-cooled water tank.

[0009] Preferably, the backup water cooling mechanism includes a water cooling tank, on which water pipe three and water pipe four are fixedly connected respectively. The end of water pipe three is fixedly connected to the outer end of water pipe one near the water outlet, and the end of water pipe four is fixedly connected to the outer end of water pipe one near the air-cooled water tank.

[0010] Preferably, a water supply valve is fixedly installed at the top of the water pipe.

[0011] Preferably, the constant temperature mechanism includes a temperature controller, which is electrically connected to a cold water pump, a solenoid valve, and a water temperature probe via wires. The cold water pump and the solenoid valve are both installed on water pipe three. The cold water pump is located on the side of the solenoid valve near the water-cooled water tank, and the water temperature probe is embedded in the inner wall of the air-cooled water tank.

[0012] Preferably, an electromagnetic three-way switching valve is fixedly connected between one end of the water pipe and the outlet, and an electromagnetic three-way switching valve is fixedly connected between the other end of the water pipe and the inlet.

[0013] Compared with related technologies, the closed-loop cooling water internal circulation device for gasoline-powered external engines of unmanned vessels provided by this utility model has the following beneficial effects:

[0014] By coordinating the main water cooling system, the backup water cooling system, and the constant temperature system, the cooling water used for cooling the outboard motor is internally circulated. Compared with existing technologies, this solves the problem of reduced service life caused by excessively low water temperature and excessively high internal temperature due to thermal stress and cavitation caused by directly using external cooling water. It also solves the problem of frequent engine shutdowns and unusability of marine gasoline outboard motors in water bodies with complex composition, high silt content, high salt content, and high impurity content. At the same time, the internal circulation device that combines air cooling and water cooling effectively solves the problem of difficult internal circulation water temperature control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] The diagram is labeled as follows: 1. External unit, 11. Inlet, 12. Outlet, 13. Solenoid three-way valve one, 14. Solenoid three-way valve two, 2. Air-cooled water tank, 21. Water pipe one, 22. Water pipe two, 23. Main water pump, 24. Fins, 3. Water-cooled water tank, 31. Water pipe three, 32. Water pipe four, 33. Water supply valve, 4. Thermostat, 41. Cold water pump, 42. Solenoid valve, 43. Water temperature probe. Detailed Implementation

[0017] Please see Figure 1 The technical solution provided by this utility model specifically includes the following embodiments:

[0018] A closed-loop cooling water circulation device for gasoline-powered external engines of unmanned vessels includes an external engine 1, on which an inlet 11 and an outlet 12 are installed. It also includes a main water cooling mechanism, a backup water cooling mechanism and a constant temperature mechanism.

[0019] The main water cooling mechanism includes an air-cooled water tank 2, a water pipe 21 is fixedly connected between the air-cooled water tank 2 and the water outlet 12, a water pipe 22 is fixedly connected between the air-cooled water tank 2 and the water inlet 11, and a main water pump 23 is installed on the water pipe 22.

[0020] The outer surface of the air-cooled water tank 2 is fixedly connected with fins 24. The air-cooled water tank 2 is installed on the surface of the hull. Its main purpose is to contact the air to achieve air cooling of the cooling water inside the air-cooled water tank 2. The fins 24 can increase the contact area with the air, thereby improving the heat dissipation efficiency of the cooling water inside the air-cooled water tank 2.

[0021] The backup water cooling mechanism includes a water cooling tank 3, on which water pipe 31 and water pipe 42 are fixedly connected respectively. The end of water pipe 31 is fixedly connected to the outer end of water pipe 12 near the outlet 12, and the end of water pipe 42 is fixedly connected to the outer end of water pipe 12 near the air-cooled water tank 2.

[0022] The water-cooled water tank 3 is installed on the side or stern of the ship and is partially submerged in water. In this way, the cooling water used for internal circulation can directly exchange heat with the external water body through the water-cooled water tank 3, which is highly efficient. Both the air-cooled water tank 2 and the water-cooled water tank 3 are made of metal materials, which facilitates heat dissipation.

[0023] A water supply valve 33 is fixedly installed at the top of the water pipe 31. When the circulating cooling water required for cooling the external unit 1 is insufficient, an appropriate amount of water can be added to the water-cooled water tank 3 by opening the water supply valve 33. Conversely, when the water temperature is too high, it can also be opened to release air and pressure.

[0024] The constant temperature mechanism includes a temperature controller 4, which is electrically connected to a cold water pump 41, a solenoid valve 42, and a water temperature probe 43 via wires. The cold water pump 41 and the solenoid valve 42 are both installed on the water pipe 31. The cold water pump 41 is located on the side of the solenoid valve 42 closer to the water-cooled water tank 3, and the water temperature probe 43 is embedded in the inner wall of the air-cooled water tank 2.

[0025] The upper temperature limit can be set by the thermostat 4. When the water temperature probe 43 reports that the water temperature exceeds the upper limit, the thermostat 4 opens the water solenoid valve 42 and the cold water pump 41, allowing the circulating cooling water to enter the water-cooled water tank 3 for water cooling and heat dissipation, thereby achieving rapid cooling. When the water temperature drops below the limit, the thermostat 4 closes the solenoid valve 42 and the cold water pump 41. At this time, only the main water cooling mechanism operates, and the backup water cooling mechanism stops operating. This solves the problem of reduced service life caused by excessively low water temperature and excessively high internal temperature due to direct use of external cooling water, which leads to thermal stress and cavitation.

[0026] An electromagnetic three-way switching valve 13 is fixedly connected between the end of water pipe 21 and the outlet 12, and an electromagnetic three-way switching valve 14 is fixedly connected between the end of water pipe 22 and the inlet 11. By controlling the opening and closing of electromagnetic three-way switching valve 13 and electromagnetic three-way switching valve 14, internal circulation and external circulation can be switched. When internal circulation is not required, electromagnetic three-way switching valve 13 and electromagnetic three-way switching valve 14 are activated to close the internal circulation waterway and open the external circulation waterway.

[0027] Working principle:

[0028] During operation, the external unit 1 is driven by the main water pump 23, which enables the cooling water to circulate between the air-cooled water tank 2, water pipe 22, external unit 1 and water pipe 21. After entering the external unit 1 through the inlet 11, the cooling water will flow according to the water-cooled pipeline set inside it to perform water cooling heat dissipation, and finally be discharged through the outlet 12 to water pipe 21. When the cooling water enters the air-cooled water tank 2, the air-cooled water tank 2 comes into contact with the air for heat exchange, thereby performing air cooling heat dissipation on the cooling water circulating in the air-cooled water tank 2.

[0029] During this period, the water temperature probe 43 monitors the water temperature in the air-cooled water tank 2 in real time. When the water temperature is too high and reaches the set threshold, the thermostat 4 will control the cold water pump 41 and the solenoid valve 42 to start. After the solenoid valve 42 starts, the water pipe 31 is in the open circuit. Then, the water in the water pipe 21 is introduced into the water-cooled water tank 3 through the cold water pump 41 and the water pipe 31. Half of the water-cooled water tank 3 is submerged in water, so it can directly exchange heat with the external water to achieve water cooling heat dissipation, thereby improving the heat dissipation efficiency of the cooling water. The cooled water after heat dissipation returns to the water pipe 21 through the water pipe 42 and finally enters the air-cooled water tank 2 for circulation.

Claims

1. A closed-loop cooling water circulation device for an unmanned surface vessel's gasoline-powered external engine, comprising an external engine (1), wherein the external engine (1) is equipped with an inlet (11) and an outlet (12), characterized in that: It also includes a main water cooling system, a backup water cooling system, and a constant temperature system; The main water cooling mechanism includes an air-cooled water tank (2), a water pipe (21) is fixedly connected between the air-cooled water tank (2) and the water outlet (12), a water pipe (22) is fixedly connected between the air-cooled water tank (2) and the water inlet (11), and a main water pump (23) is installed on the water pipe (22).

2. The closed-loop cooling water internal circulation device for an unmanned surface vessel's gasoline-powered external engine according to claim 1, characterized in that, Fins (24) are fixedly connected to the outer surface of the air-cooled water tank (2).

3. The closed-loop cooling water internal circulation device for an unmanned surface vessel's gasoline-powered external engine according to claim 1, characterized in that, The backup water cooling mechanism includes a water cooling tank (3), on which water pipe three (31) and water pipe four (32) are fixedly connected respectively. The end of water pipe three (31) is fixedly connected to the side of the outer end of water pipe one (21) near the water outlet (12), and the end of water pipe four (32) is fixedly connected to the side of the outer end of water pipe one (21) near the air-cooled water tank (2).

4. The closed-loop cooling water internal circulation device for an unmanned surface vessel's gasoline-powered external engine according to claim 3, characterized in that, A water supply valve (33) is fixedly installed at the top of the water pipe (31).

5. The closed-loop cooling water internal circulation device for an unmanned surface vessel's gasoline-powered external engine according to claim 3, characterized in that, The constant temperature mechanism includes a temperature controller (4), which is electrically connected to a cold water pump (41), a solenoid valve (42) and a water temperature probe (43) via wires. The cold water pump (41) and the solenoid valve (42) are both installed on the water pipe (31). The cold water pump (41) is located on the side of the solenoid valve (42) near the water-cooled water tank (3). The water temperature probe (43) is embedded in the inner wall of the air-cooled water tank (2).

6. According to claim 1, a closed-loop cooling water internal circulation device for gasoline external engine of unmanned vessel is provided, wherein an electromagnetic three-way switching valve one (13) is fixedly connected between the end of water pipe one (21) and the outlet (12), and an electromagnetic valve three-way switching valve two (14) is fixedly connected between the end of water pipe two (22) and the inlet (11).

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