Cooling water system and ship

Abstract

The invention relates to the technical field of ships, in particular to a cooling water system and a ship. According to the cooling water system, the blocking piece is arranged in the transition cavity, the upper side of the blocking piece is connected to the top wall of the transition cavity, and the lower side of the blocking piece and the bottom wall of the transition cavity are spaced by the preset distance, so that gas-liquid two-phase flow entering the water storage cavity is blocked by the blocking piece, and the contained air amount is greatly reduced; therefore, the problem of low cooling water pressure of a cooling system caused by excessive air content of cooling water entering the ship is solved. According to the ship, the ship comprises the cooling water system, by arranging the blocking piece, gas-liquid two-phase flow entering the water storage cavity is blocked by the blocking piece, the contained air amount is greatly reduced, and then the problem that the cooling water pressure of the cooling system is low due to the fact that the air content of cooling water entering the ship is too large is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a cooling water system and a ship. Background Art

[0002] As requirements for energy conservation and emission reduction for ships become increasingly stringent, new marine energy-saving and emission-reduction technologies are gaining increasing attention within the shipping industry. As a marine energy-saving and carbon-reduction technology, ship air layer drag reduction technology utilizes the difference in density and viscosity between gas and water to inject gas into the bottom of the hull, creating a uniform and stable gas-liquid two-phase flow between the bottom surface of the hull and the water to achieve drag reduction, effectively reducing fuel consumption and carbon dioxide emissions. As the gas ejected from the air layer drag reduction system flows through the stern of the hull, it is inevitably drawn into the ship's cooling system through the ship's bottom water inlet, potentially causing low cooling water pressure in the cooling system and affecting its normal operation.

[0003] In the prior art, a water storage tank is typically installed at the bottom of a ship's engine room. Water is drawn into the tank, and ventilation holes are provided in the tank's upper portion to facilitate the dissipation of gases. Once this is achieved, the water in the tank is then passed into the ship's cooling system. However, when water is drawn into the tank, a large amount of gas enters the tank, and the ventilation holes are unable to expel the air in a timely manner, resulting in ineffective gas dissipation. Therefore, a cooling water system and ship are urgently needed to address this issue. Summary of the Invention

[0004] The first object of the present invention is to provide a cooling water system to solve the problem in the prior art that the cooling water entering the ship cooling system contains too much air, resulting in low cooling water pressure in the cooling system.

[0005] Another object of the present invention is to provide a ship to solve the problem of low cooling water pressure in the ship cooling system in the prior art.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] A cooling water system, the cooling water system includes a transition piece and a water storage piece, the water storage piece is installed at the bottom of the ship's engine room and has a water storage chamber, the transition piece is installed on the inner wall of the ship's engine room, the transition piece has a transition chamber and the transition chamber is connected to the water storage chamber, a blocking piece is installed in the transition chamber, the upper side of the blocking piece is connected to the top wall of the transition chamber, and the lower side is spaced a preset distance from the bottom wall of the transition chamber, a water inlet is opened on one side wall of the transition chamber, the water inlet is connected to the water inlet on the side wall of the ship's engine room, and a water outlet is opened on the other side of the transition chamber, and the water outlet is connected to the water storage chamber.

[0008] Optionally, the cooling water system further includes a filter and a water inlet pipe, the water inlet pipes are connected to both ends of the filter respectively, the water inlet pipe at one end of the filter is connected to the transition chamber, and the water inlet pipe at the other end of the filter is connected to the water storage chamber.

[0009] Optionally, the water inlet pipe at one end of the filter passes through the water outlet hole and extends into the transition cavity, and the end portion extends downward by a preset distance.

[0010] Optionally, along the height direction of the ship, the lowest end position of the blocking member is higher than the lowest end position of the water inlet pipe extending into the transition chamber.

[0011] Optionally, the cooling water system further includes a first air permeable pipe, one end of which is connected to the filter, and the other end of which is used to communicate with the atmosphere.

[0012] Optionally, two transition pieces are provided, and the two transition pieces are installed on both side walls of the ship's engine room along the width direction of the ship in a one-to-one correspondence.

[0013] Optionally, along the height direction of the ship, the two transition pieces are arranged at different heights.

[0014] Optionally, an air hole is provided on the top wall of the water storage chamber, and the cooling water system further includes an air valve and a second air pipe, the air valve is installed in the air hole, one end of the second air pipe is connected to one end of the air valve, and the other end is used to connect to the atmosphere.

[0015] Optionally, a mounting hole is further provided on the top wall of the water storage chamber, and the cooling water system further includes a pumping valve and a pumping pipe. The pumping valve is installed in the mounting hole, one end of the pumping valve is used to connect to the ship cooling system, and the other end is provided with a pumping pipe, which extends downward by a preset distance.

[0016] A ship comprises the cooling water system.

[0017] Beneficial effects of the present invention:

[0018] The present invention proposes a cooling water system, which provides a blocking member in a transition chamber, wherein the upper side of the blocking member is connected to the top wall of the transition chamber, and the lower side is spaced a preset distance from the bottom wall of the transition chamber, and a water inlet is opened on one side wall of the transition chamber, and the water inlet is connected to the water inlet on the side wall of the ship's engine room. When a gas-liquid two-phase flow of mixed water and air enters the transition chamber from the water inlet, the gas-liquid two-phase flow will be blocked by the blocking member and will be difficult to directly enter the water outlet on one side of the blocking member. Since the density of air is smaller than that of water, after the gas-liquid two-phase flow is blocked by the blocking member, part of the air therein will rise to the top of the transition chamber on one side of the blocking member, and then the gas-liquid two-phase flow will pass through the gap between the blocking member and the bottom wall of the transition chamber, and enter the water storage chamber from the water outlet, so that the gas-liquid two-phase flow entering the water storage chamber is blocked by the blocking member, and the amount of air contained in the gas-liquid two-phase flow is greatly reduced, thereby solving the problem of low cooling water pressure in the cooling system caused by excessive air content in the cooling water entering the cooling system.

[0019] The present invention proposes a ship including a cooling water system, which can block the gas-liquid two-phase flow entering the water storage chamber through a blocking member, greatly reducing the amount of air contained therein, thereby solving the problem of low cooling water pressure in the ship's cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0021] Figure 1 It is a structural schematic diagram of a cooling water system provided by an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Transition piece; 11. Transition chamber; 12. Blocking piece; 13. Water inlet hole; 14. Water outlet hole; 2. Filter; 3. Water inlet pipe; 4. First air vent pipe; 5. Water storage piece; 51. Water storage chamber; 6. Second air vent pipe; 7. Air valve; 8. Water pumping valve; 9. Water pumping pipe. DETAILED DESCRIPTION

[0024] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0027] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0029] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or there may be an element located in the middle.

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] This embodiment provides a cooling water system and a ship, which are used to solve the problem in the prior art that the cooling water entering the ship contains too much air, resulting in low cooling water pressure in the cooling system.

[0032] The ship in this embodiment includes a cooling water system, which can provide cooling water for the ship's cooling system to ensure the normal operation of the ship's engine.

[0033] like Figure 1 As shown, the cooling water system includes a transition piece 1 and a water storage piece 5. The water storage piece 5 is installed at the bottom of the ship's engine room and has a water storage chamber 51. The transition piece 1 is installed on the inner wall of the ship's engine room. The transition piece 1 has a transition chamber 11. A blocking piece 12 is installed in the transition chamber 11. The upper side of the blocking piece 12 is connected to the top wall of the transition chamber 11, and the lower side is spaced a preset distance from the bottom wall of the transition chamber 11. A water inlet 13 is provided on one side wall of the transition chamber 11, and the water inlet 13 is connected to the water inlet on the side wall of the ship's engine room. A water outlet 14 is provided on the other side wall of the transition chamber 11, and the water outlet 14 is connected to the water storage chamber 51.

[0034] Understandably, ship air layer drag reduction technology, as a marine energy-saving and carbon-reduction technology, exploits the difference in density and viscosity between gas and water. This technology injects gas into the bottom of the hull, creating a uniform and stable gas-liquid two-phase flow between the bottom surface and the water. This reduces drag and can effectively reduce fuel consumption and CO2 emissions. However, this two-phase flow can be drawn into the ship's cooling water system, potentially causing low cooling water pressure and impacting normal operation.

[0035] In the present embodiment, when the gas-liquid two-phase flow of mixed water and air enters the transition chamber 11 from the water inlet on the side wall of the ship's engine room, a blocking member 12 is provided in the transition chamber 11. Since the water outlet 14 is located on one side wall of the transition chamber 11, that is, on one side of the blocking member 12, the gas-liquid two-phase flow is blocked by the blocking member 12 and is difficult to directly rush into the water outlet 14 on one side of the blocking member 12. Since the density of air is smaller than that of water, part of the air in the gas-liquid two-phase flow will rise to the top of the transition chamber 11 on the other side of the blocking member 12, and then the gas-liquid two-phase flow of part of the air will pass through the gap between the blocking member 12 and the bottom wall of the transition chamber 11, and enter the water storage chamber 51 from the water outlet 14. As a result, the gas-liquid two-phase flow entering the water storage chamber 51 is blocked by the blocking member 12, and the amount of air contained in it is greatly reduced. When the ship's cooling system takes cooling water from the water storage chamber 51, the air content inhaled is relatively small, and it is less likely that the problem of low cooling water pressure in the cooling system will occur.

[0036] For example, the blocking member 12 is plate-shaped and vertically disposed in the transition chamber 11. The plate-shaped blocking member 12 ensures sufficient blocking area while not occupying too much space within the transition chamber 11, thereby improving the water flow capacity of the transition chamber 11. The vertical placement of the blocking member 12 makes it more difficult for the gas-liquid two-phase flow to pass through the blocking member 12 and enter the water outlet 14, thereby improving the transition chamber 11's ability to eliminate air contained in the gas-liquid two-phase flow.

[0037] Of course, in other embodiments, the blocking member 12 may also be in other shapes, as long as it can ensure that the gas-liquid two-phase flow is prevented from directly entering the water outlet 14, and no excessive restrictions are imposed here.

[0038] Optionally, the water inlet 13 is coaxially connected to the water inlet on the side wall of the ship's engine room. This arrangement enables the gas-liquid two-phase flow to enter the transition chamber 11 faster and more smoothly, thereby improving the water flow efficiency of the transition chamber 11.

[0039] To facilitate on-demand control of the cooling water system, optionally, an underwater door is movably provided on the side wall of the ship's engine room at the water inlet. The fixed side of the underwater door is movably installed on the side wall of the ship's engine room, and the free side can rotate around the fixed side to block or open the water inlet.

[0040] To prevent the transition chamber 11 from being blocked, the water inlet is optionally covered with a filter screen to prevent debris such as sand and stones from entering the transition chamber 11 .

[0041] Optionally, two transition pieces 1 are provided, and the two transition pieces 1 are installed one-to-one on the two side walls of the ship's engine room along the ship's width direction. This arrangement can improve the water intake efficiency of the cooling water system, thereby improving the cooling effect of the ship's cooling system.

[0042] To further ensure water storage and cooling effects, the two transition pieces 1 can optionally be positioned at different heights along the height direction of the ship. Understandably, when the two transition pieces 1 are positioned at different heights while the ship is sailing, the lower transition piece 1 can obtain cooling water at a lower temperature, thereby improving the cooling capacity of the ship's cooling system. Furthermore, when the ship's draft is shallow, the higher transition piece 1 has difficulty obtaining cooling water, while the lower transition piece 1 can still obtain cooling water, ensuring the normal operation of the ship's cooling system. Furthermore, when the ship passes through waters with a lot of bottom sediment, since the lower transition piece 1 is more susceptible to contact with sediment, the underwater door corresponding to the lower transition piece 1 can be closed, leaving only the underwater door corresponding to the higher transition piece 1 open to prevent sediment from clogging the lower transition piece 1.

[0043] For example, two water storage members 5 are provided, and the two water storage chambers 51 of the two water storage members 5 are in one-to-one communication with the two transition chambers 11 of the two transition members 1. This arrangement ensures that the cooling water in the two water storage chambers 51 has different temperatures, allowing cooling water from either water storage chamber 51 to be drawn according to temperature requirements, thereby improving the availability of the cooling water system.

[0044] Optionally, the cooling water system further includes a filter 2 and a water inlet pipe 3. The filter 2 is connected to the water inlet pipe 3 at both ends. The water inlet pipe 3 at one end of the filter 2 communicates with the transition chamber 11, and the water inlet pipe 3 at the other end of the filter 2 communicates with the water storage chamber 51. This arrangement filters the cooling water through the filter 2 to prevent impurities from entering the ship's cooling system and causing malfunctions.

[0045] To further prevent air from entering the water storage chamber 51, the water inlet pipe 3 at one end of the filter 2 optionally extends through the water outlet hole 14 into the transition chamber 11, with the end extending downward a predetermined distance. This arrangement allows the end of the water inlet pipe 3 to more easily and quickly reach the water. Compared to a horizontal arrangement of the end of the water inlet pipe 3, it effectively reduces the ingress of air, thereby improving the cooling water system's air removal effectiveness.

[0046] For example, the vertical distance between the end of the water inlet pipe 3 and the center axis of the water outlet 14 is 1m-2m. This setting can ensure the air elimination effect and avoid the gap between the end of the water inlet pipe 3 and the bottom wall of the transition chamber 11 being too small to affect the water inlet efficiency.

[0047] Of course, in other embodiments, the vertical distance between the end of the water inlet pipe 3 and the central axis of the water outlet hole 14 can be set as needed according to the size of the transition piece 1, and no excessive restrictions are imposed here.

[0048] Optionally, along the height direction of the ship, the lowest end of the blocking member 12 is higher than the lowest end of the water inlet pipe 3 extending into the transition chamber 11. Understandably, when the gas-liquid two-phase flow enters the transition chamber 11, it is blocked by the blocking member 12. Part of the air in the gas-liquid two-phase flow rises and gathers above the transition chamber 11. The gas-liquid two-phase flow, after separating part of the air, passes through the gap between the lower side of the blocking member 12 and the bottom wall of the transition chamber 11 and enters the transition chamber 11 on the other side of the blocking member 12. The lowest end of the blocking member 12 is higher than the lowest end of the water inlet pipe 3 extending into the transition chamber 11, that is, the lower end of the water inlet pipe 3 is relatively low, which enables the gas-liquid two-phase flow to quickly enter the water inlet pipe 3. If the lower end of the water inlet pipe 3 is set too high, the gas-liquid two-phase flow will need to rise a certain distance in the transition chamber 11 on the other side of the blocking member 12 before entering the water inlet pipe 3. The water inlet efficiency is low, and the risk of air entering the water inlet pipe 3 will increase during the rising process. Therefore, this setting can improve the water intake efficiency and enhance the air removal effect.

[0049] Optionally, the cooling water system further includes a first air vent 4, one end of which is connected to the filter 2 and the other end of which is connected to the atmosphere. This arrangement allows some of the air in the cooling water to escape into the atmosphere through the first air vent 4 when the filter 2 is filtering the cooling water, further reducing the air content of the cooling water entering the water storage chamber 51.

[0050] For example, the diameter of the first air tube 4 is 20 mm to 40 mm, which ensures sufficient air permeability of the filter 2 while preventing the first air tube 4 from being too thick, thereby wasting material and occupying too much space.

[0051] Optionally, a ventilation hole is formed in the top wall of the water storage chamber 51. The cooling water system further includes a ventilation valve 7 and a second ventilation tube 6. The ventilation valve 7 is installed in the ventilation hole. One end of the second ventilation tube 6 is connected to one end of the ventilation valve 7, and the other end is connected to the atmosphere. This arrangement allows air accumulated above the water storage chamber 51 to be promptly released into the atmosphere through the second ventilation tube 6, thereby further reducing the air content in the water storage chamber 51.

[0052] To enhance the ventilation effect, optionally, multiple ventilation holes and ventilation valves 7 are provided, and multiple ventilation valves 7 are installed in multiple ventilation holes in a one-to-one correspondence.

[0053] For example, the diameter of the second air vent pipe 6 is 40 mm to 60 mm, which not only ensures sufficient air permeability, but also avoids material waste and improves space utilization of the ship's engine room.

[0054] In order to save space inside the ship's engine room, illustratively, the outer wall of the second air vent pipe 6 is provided with a side hole, and the first air vent pipe 4 is connected to the side hole.

[0055] Optionally, a mounting hole is further defined in the top wall of the water storage chamber 51. The cooling water system further includes a pumping valve 8 and a pumping pipe 9. The pumping valve 8 is mounted in the mounting hole. One end of the pumping valve 8 is connected to the ship's cooling system, and the other end is mounted with the pumping pipe 9, which extends downward a predetermined distance. This arrangement, by extending the pumping pipe 9 downward, allows the lower end of the pumping pipe 9 to be positioned below the water level, preventing the ship's cooling system from drawing air from the pumping valve 8 that has accumulated above the transition chamber 11. This prevents the cooling water pressure in the ship's cooling system from being too low, thereby improving the operational stability of the ship's cooling system.

[0056] For example, the vertical distance between the lower end of the water pumping pipe 9 and the top wall of the water storage chamber 51 is 200 mm to 400 mm. This arrangement ensures that the lower end of the water pumping pipe 9 is below the water level, preventing air from being drawn in. It also prevents the distance between the lower end of the water pumping pipe 9 and the bottom wall of the water storage chamber 51 from being too close, which could affect water suction efficiency. Of course, the vertical distance between the lower end of the water pumping pipe 9 and the top wall of the water storage chamber 51 can be adjusted as needed based on the size of the water storage member 5 and is not particularly limited here.

[0057] Optionally, multiple mounting holes and pumping valves 8 are provided, and the pumping valves 8 are installed in the mounting holes one by one. Some pumping valves 8 are connected to the main cooling system of the ship, and some pumping valves 8 are connected to the auxiliary cooling system of the ship.

[0058] It is worth noting that the main cooling system of a ship and the auxiliary cooling system of a ship are common knowledge in this field and will not be described in detail here.

[0059] The working process of the cooling water system of this embodiment is as follows:

[0060] When the ship is sailing in the water, the air layer drag reduction system is activated, and the air layer drag reduction system sprays gas to the bottom of the ship, forming a gas-liquid two-phase flow between the bottom of the ship and the water. When part of the gas-liquid two-phase flow passes through the water inlet on the side wall of the ship's engine room, it enters the transition chamber 11 through the water inlet hole 13. The gas-liquid two-phase flow is blocked by the blocking member 12 and cannot directly rush into the water outlet hole 14, and further cannot directly enter the water storage chamber 51. Part of the air in the gas-liquid two-phase flow rises to the top of the transition chamber 11 on the side of the blocking member 12, separating the air. The gas-liquid two-phase flow passes through the gap between the blocking member 12 and the bottom wall of the transition chamber 11 and enters the water inlet pipe 3. When the gas-liquid two-phase flow passes through the filter 2, part of the air rises and penetrates into the atmosphere through the first air permeable pipe 4. After the gas-liquid two-phase flow flows into the water storage chamber 51, the air contained in it continues to rise to the top of the water storage chamber 51 and penetrates into the atmosphere through the second air permeable pipe 6. Most of the air contained in the gas-liquid two-phase flow in the water storage chamber 51 is discharged. At this time, the ship cooling system can extract cooling water from the water storage chamber 51 through the pumping pipe 9.

[0061] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cooling water system, characterized in that: The cooling water system comprises a transition piece (1) and a water storage piece (5), wherein the water storage piece (5) is installed at the bottom of the ship's engine room and has a water storage chamber (51), and the transition piece (1) is installed at the inner wall of the ship's engine room, wherein the transition piece (1) has a transition chamber (11), wherein a blocking piece (12) is installed in the transition chamber (11), wherein the upper side of the blocking piece (12) is connected to the top wall of the transition chamber (11), and the lower side is spaced apart from the bottom wall of the transition chamber (11) by a preset distance, wherein a water inlet hole (13) is provided on one side wall of the transition chamber (11), wherein the water inlet hole (13) is communicated with the water inlet on the side wall of the ship's engine room, and a water outlet hole (14) is provided on the other side wall of the transition chamber (11), wherein the water outlet hole (14) is communicated with the water storage chamber (51).

2. The cooling water system according to claim 1, characterized in that: The cooling water system further comprises a filter (2) and a water inlet pipe (3), wherein both ends of the filter (2) are respectively connected to the water inlet pipe (3), the water inlet pipe (3) at one end of the filter (2) is in communication with the transition chamber (11), and the water inlet pipe (3) at the other end of the filter (2) is in communication with the water storage chamber (51).

3. The cooling water system according to claim 2, characterized in that: The water inlet pipe (3) at one end of the filter (2) passes through the water outlet hole (14) and extends into the transition chamber (11), with the end portion extending downward by a preset distance.

4. The cooling water system according to claim 3, characterized in that: Along the height direction of the ship, the lowest end position of the blocking member (12) is higher than the lowest end position of the water inlet pipe (3) extending into the transition chamber (11).

5. The cooling water system according to claim 2, characterized in that: The cooling water system further comprises a first air vent pipe (4), one end of which is in communication with the filter (2) and the other end of which is in communication with the atmosphere.

6. The cooling water system according to any one of claims 1 to 5, characterized in that: Two transition pieces (1) are provided, and the two transition pieces (1) are mounted on two side walls of the ship's engine room in a one-to-one correspondence along the width direction of the ship.

7. The cooling water system according to claim 6, characterized in that: Along the height direction of the ship, the two transition pieces (1) are arranged at different heights.

8. The cooling water system according to any one of claims 1 to 5, characterized in that: The top wall of the water storage chamber (51) is provided with an air vent, and the cooling water system further comprises an air vent valve (7) and a second air vent pipe (6). The air vent valve (7) is installed in the air vent, and one end of the second air vent pipe (6) is connected to one end of the air vent valve (7), and the other end is used to connect to the atmosphere.

9. The cooling water system according to any one of claims 1 to 5, characterized in that: The top wall of the water storage chamber (51) is also provided with a mounting hole. The cooling water system further comprises a pumping valve (8) and a pumping pipe (9). The pumping valve (8) is installed in the mounting hole. One end of the pumping valve (8) is used to connect to the ship cooling system, and the other end is provided with a pumping pipe (9). The pumping pipe (9) extends downward by a preset distance.

10. A ship, characterized in that: The ship comprises the cooling water system according to any one of claims 1 to 9.

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