Air supply system and ship applied to gas layer resistance reduction ship

Abstract

The air supply system is applicable to a gas layer drag reduction ship, and includes a gas tank (1) provided with an exhaust pipe (12) and a plurality of air inlet pipes (11), each of which is provided with a first monitoring assembly (13) and a first remote control valve (14), and a cooling assembly (2) provided inside the gas tank (1) and including an inlet pipe (21) provided with a second remote control valve (211), and a drain pipe (22) provided with a second monitoring assembly (221) both of which are communicatively connected to the first monitoring assembly (13) and the second remote control valve (211). The air supply system is capable of supplying a stable, low-temperature gas.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application bearing application number 202110195731.6, filed with the China Patent Office on February 19, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of a gas layer drag reduction ship, and, for example, to an air supply system and a ship applied to a gas layer drag reduction ship. [Background technology]

[0003] The ship gas layer drag reduction system includes subsystems such as air supply, pressure stabilization, jet, and control. The air supply system supplies air through multiple air compressors. When there are many air compressors, the multiple air compressors will interfere with each other, and the complex pipeline structure will affect each other, and the connection loss of the pipeline will be large, making the output of the air supply system and the gas in the pipeline unstable. At the same time, for general low-pressure air compressors, such as oil-free screw air compressors, the temperature of the discharged gas is high, reaching above 100°C and even 200°C. When high-temperature gas runs through the pipeline, it will cause damage and danger. Summary of the Invention

[0004] The present application provides an air supply system and a ship applicable to a gas layer resistance reduction ship, which plays the role of connecting with an air compressor, stably outputting gas, and reducing the temperature of the output gas, thereby improving the practicality and stability of the air supply system.

[0005] An air supply system applied to a gas layer resistance reduction ship, comprising: a gas tank having an exhaust line and a plurality of intake lines, each having a first monitoring assembly and a first remote control valve, the first monitoring assembly configured to monitor the temperature, pressure and flow rate of gas in the corresponding exhaust line or intake line, and the first remote control valve configured to control the flow rate of gas through the corresponding exhaust line or intake line; a cooling assembly disposed within the gas tank and configured to reduce a temperature of gas within the gas tank, the cooling assembly comprising: an inlet pipe provided with a second remote control valve; and a drain pipe provided with a second monitoring assembly, both of which are communicatively connected to each of the first monitoring assemblies and the second remote control valve, the second monitoring assembly configured to monitor a temperature and a flow rate of fluid within the drain pipe, and the second remote control valve configured to control a flow rate of liquid passing through the inlet pipe in response to monitoring results of the second monitoring assembly and each of the first monitoring assemblies; An air supply system comprising:

[0006] There is further provided a marine vessel comprising an air supply system as described above. [Brief description of the drawings]

[0007] [Figure 1] 1 is a structural schematic diagram of an air supply system according to an embodiment of the present application. [Diagram 2] 1 is a vertical cross-sectional view of a gas tank according to an embodiment of the present application. [Diagram 3] FIG. 2 is a horizontal cross-sectional view of a gas tank according to an embodiment of the present application. [Figure 4] FIG. 2 is a diagram illustrating the control principle of the air supply system according to the embodiment of the present application. [Diagram 5] FIG. 2 is a schematic diagram of a mounting method of a damper according to an embodiment of the present application. [Figure 6] 1 is a structural schematic diagram of a tank body of a gas tank according to an embodiment of the present application. [Figure 7] 1 is a structural schematic diagram of a ship according to an embodiment of the present application. [Figure 8] FIG. 2 is a structural schematic diagram of another vessel according to an embodiment of the present application. [Explanation of symbols]

[0008] REFERENCE SIGNS LIST 1 gas tank, 11 inlet pipe, 12 exhaust pipe, 13 first monitoring assembly, 131 first temperature sensor, 132 first pressure sensor, 133 first flow rate sensor, 14 first remote control valve, 15 damper, 16 inner wall, 17 outer wall, 18 third cooling coil, 19 heat dissipation fin, 2 cooling assembly, 21 inlet pipe, 211 second remote control valve, 22 drain pipe, 221 second monitoring assembly, 2211 second temperature sensor, 2212 second flow rate sensor, 23 first cooling coil, 24 second cooling coil, 3. Air compressor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Generally, the assemblies in the embodiments of the present application described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0010] Like symbols and letters represent like items in the following drawings, so that once an item is defined in one drawing, no definition or interpretation is required for it in subsequent drawings.

[0011] In the description of this application, the orientations or positional relationships indicated by the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings or are the orientations or positional relationships always placed when the product of this application is used, and are merely for facilitating and simplifying the description of this application, and do not indicate or imply that such devices or elements must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as limiting this application. In addition, the terms "first", "second", and "third" are merely for distinguishing and explaining, and cannot be understood as indicating or implying relative importance. In the description of this application, unless otherwise limited, the meaning of "plurality" is two or more than two.

[0012] In the description of this application, unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, they may be fixed connection, detachable connection, integral connection, mechanical connection, or electrical connection. The meaning of the above terms in the present application can be understood according to the context.

[0013] In this application, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include direct contact between the first feature and the second feature, or may include contact between the first feature and the second feature through another feature between them without direct contact. Furthermore, a first feature being "above," "upper," and "on the upper surface" of a second feature may include the first feature being directly above and diagonally above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may include the first feature being directly below and diagonally below the second feature, or simply means that the horizontal height of the first feature is smaller than that of the second feature.

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present application will be described with reference to the accompanying drawings, in which the same or similar reference numerals throughout the drawings indicate the same or similar elements, or elements having the same or similar functions.

[0015] As shown in FIG. 1, this embodiment provides an air supply system applicable to a gas layer drag reduction ship including a gas tank 1 and a cooling assembly 2. The gas tank 1 is provided with an exhaust pipe 12 and a plurality of intake pipes 11. The exhaust pipe 12 and each intake pipe 11 are each provided with a first monitoring assembly 13 and a first remote control valve 14. The plurality of first monitoring assemblies 13 can monitor the temperature, pressure and flow rate of gas in the corresponding exhaust pipe 12 and intake pipe 11. The plurality of first remote control valves 14 can respectively control the flow rate of gas passing through the exhaust pipe 12 and the intake pipe 11. The cooling assembly 2 is provided inside the gas tank 1 and controls the cooling. The cooling assembly 2 is capable of lowering the temperature of the gas in the gas tank 1, and the cooling assembly 2 has an inlet pipe 21 and a drain pipe 22, and the drain pipe 22 is provided with a second monitoring assembly 221, which is capable of monitoring the temperature and flow rate of the fluid in the drain pipe 22, and the inlet pipe 21 is provided with a second remote control valve 211, and both the second monitoring assembly 221 and each first monitoring assembly 13 are communicatively connected to the second remote control valve 211, and the second remote control valve 211 is capable of controlling the flow rate of the liquid passing through the inlet pipe 21 depending on the monitoring results of the second monitoring assembly 221 and each first monitoring assembly 13.

[0016] 2-3, in this embodiment, liquid cooling is used to lower the temperature, and the cooling liquid is any one of fresh water, seawater, and oil, but is not limited thereto. The tank wall of the gas tank 1 includes an inner wall 16 and an outer wall 17, and a third cooling coil 18 is provided between the inner wall 16 and the outer wall 17, and one end of the third cooling coil 18 is connected to a liquid inlet pipe 21 and the other end is connected to a liquid discharge pipe 22. The gas tank 1 is a narrow cylindrical tank body, and the volume is determined by the gas flow rate and output gas temperature requirements required for the operation of the air supply system installed in the ship.

[0017] In one embodiment, the number of exhaust pipes 12 may be multiple.

[0018] The air supply system may further include a plurality of air compressors 3, the plurality of air compressors 3 corresponding one-to-one to a plurality of intake air pipelines 11, one end of each of the intake air pipelines 11 being connected to a corresponding air compressor 3.

[0019] In this embodiment, the designed gas tank 1 and connection type are adopted as a buffer module between the air compressor 3 and the gas transport pipeline, which plays the role of connecting with the air compressor 3, stably outputting gas, adjusting the supply type and reducing the temperature of the output gas, thereby improving the practicality and stability of the supply system. By monitoring the drain pipe 22 and the exhaust pipeline 12 in real time, the purpose of whether to add coolant from the outside and the flow rate of the added coolant can be precisely adjusted, so as to provide gas with an appropriate temperature and to achieve the effect of energy saving.

[0020] In this embodiment, there are three intake pipes 11. One end of each intake pipe 11 is connected to one air compressor 3, and the other end is connected to the inside of the gas tank 1. The gas tank 1 serves as a buffer module between the air compressor 3 and the exhaust pipe 12, and serves to connect with the air compressor 3, stabilize the output of gas, and reduce the temperature of the output gas, thereby improving the practicality and stability of the air supply system. The intake pipe 11 and the exhaust pipe 12 are located on both sides of the gas tank 1, so that the gas enters the gas tank 1 from the intake pipe 11 and fully exchanges heat with the cooling assembly 2 before being discharged from the gas tank 1 through the exhaust pipe 12.

[0021] The cooling assembly 2 may include a plurality of first cooling coils 23, with a first cooling coil 23 provided between every two adjacent air inlet pipes 11, and each first cooling coil 23 extending along the length of the gas tank 1, with one end of the first cooling coil 23 communicating with the inlet pipe 21 and the other end communicating with the discharge pipe 22. The first cooling coil 23 is located at the center of the gas tank 1, has a spiral shape, and extends along the length of the gas tank 1.

[0022] The cooling assembly 2 may further include a second cooling coil 24, which is provided along the inner wall 16 of the gas tank 1, and one end of the second cooling coil 24 is connected to the inlet pipe 21 and the other end is connected to the outlet pipe 22. The second cooling coil 24 is provided by being wound along the inner wall 16 of the gas tank 1, and surrounds the gas in the gas tank 1. When the second cooling coil 24 is further combined with the first cooling coil 23 located at the center of the gas tank 1, the cooling effect is more excellent.

[0023] The air supply system further includes a coolant circulation device, in which the coolant enters the first cooling coil 23, the second cooling coil 24 and the third cooling coil 18 through an inlet pipe 21, circulates, and then returns to the coolant circulation device via a drain pipe 22 for reuse.

[0024] The first monitoring assembly 13 comprises a first temperature sensor 131, a first pressure sensor 132 and a first flow sensor 133 which monitor the temperature, pressure and flow rate of the gas in the corresponding exhaust line 12 and inlet line 11, respectively.

[0025] The second monitoring assembly 221 includes a second temperature sensor 2211 and a second flow sensor 2212 that monitor the temperature and flow rate of the fluid in the drain 22, respectively.

[0026] 4, the thin solid lines represent signal transmission routes, the thick solid lines represent pipelines, the outline arrows represent the gas flow direction, and the filled arrows represent the coolant flow direction. The air supply system further includes a control center, and the air compressor 3, the first remote control valve 14, the second remote control valve 211, the first temperature sensor 131, the first pressure sensor 132, the first flow rate sensor 133, the second temperature sensor 2211, and the second flow rate sensor 2212 are all communicatively connected to the control center. The control center controls the on / off of each first remote control valve 14, and by controlling the opening degree of the first remote control valve 14, it can control the flow rate of gas passing through the corresponding exhaust pipeline 12 and inlet pipeline 11, and the control center controls the on / off of the second remote control valve 211 in accordance with the monitoring results of the second monitoring assembly 221 and each first monitoring assembly 13, and by controlling the opening degree of the second remote control valve 211, it can control the flow rate of liquid passing through the liquid inlet pipe 21.

[0027] When the ship is fully loaded, the control center controls the three air compressors 3 to be fully open, controls the rotation speed of the air compressors 3, and the air compressors 3 discharge gas at a certain pressure and flow rate, and the control center detects the flow rate and temperature of the gas discharged from the air compressors 3 through the first monitoring assembly 13 in the three inlet air pipes 11, obtains the flow rate and temperature of the inlet air through calculation, and controls the amount and flow rate of the cooling liquid through the second remote control valve 211. When the ship is ballast, the control center turns on only one of the air compressors 3 to reduce the flow rate, and further controls the second remote control valve 211 to reduce the opening, so that the amount and flow rate of the cooling liquid can be reduced. After the ship gas layer drag reduction system has been operating for a long time, the required flow rate is reduced, and in this case, one or two of the air compressors 3 can be turned off to reduce the gas flow rate, and further controls the second remote control valve 211 to reduce the opening, so that the amount and flow rate of the cooling liquid can be reduced, and the energy loss can be reduced. When the air compressor 3 is turned off, the first remote control valve 14 in the corresponding air inlet line 11 must also be turned off to prevent gas backflow.

[0028] The control center monitors and controls the temperature, flow rate and pressure of the gas in the exhaust pipe 12 by the first monitoring assembly 13 in the exhaust pipe 12, monitors and controls the temperature and flow rate of the cooling waste liquid flowing back by the second monitoring assembly 221 in the drain pipe 22, and controls the second remote control valve 211 to be turned off or on or to open or close according to the detection result, thereby adjusting the inflow flow rate of the cooling liquid to achieve the purpose of adjusting the temperature reduction capacity. When it is detected that the temperature of the gas in the exhaust pipe 12 is high, the opening of the second remote control valve 211 is increased to increase the amount and flow rate of the cooling liquid, thereby improving the temperature reduction capacity of the cooling assembly 2 and quickly reducing the temperature of the gas in the gas tank 1. When it is detected that the temperature of the gas in the exhaust pipe 12 is low, the opening of the second remote control valve 211 is decreased to reduce the amount and flow rate of the cooling liquid, thereby reducing energy loss.

[0029] As shown in FIG. 5, a plurality of dampers 15 are provided in the gas tank 1, and each damper 15 corresponds to each of the plurality of intake pipes 11 one-to-one. The dampers 15 are provided immediately before the exhaust end of the intake pipes 11. The dampers 15 are arranged in a position directly opposite the exhaust end of the intake pipes 11, and have a rectangular or square plate block structure. The dampers 15 are connected to the inner wall 16 of the gas tank 1 by a reinforcing support structure, which ensures the structural strength and safety. A certain gap is provided between the dampers 15 and the exhaust end of the intake pipes 11, which plays a role in buffering and stabilizing the pressure of the gas when the gas hits the dampers 15, and at the same time, distributes the gas so that it can come into contact with the first cooling coil 23 and the second cooling coil 24 and exchange heat.

[0030] 6, in another embodiment, air is used for cooling, and a number of heat dissipation fins 19 are provided on the outer side of the tank wall of the gas tank 1. The heat dissipation fins 19 are elongated and extend along the length of the gas tank 1. The heat dissipation fins 19 are uniformly arranged along the circumferential direction of the gas tank 1, thereby ensuring that the temperature of the gas in the gas tank 1 is reduced uniformly.

[0031] This embodiment further provides a ship equipped with the above air supply system, which employs the above air supply system to avoid interference between multiple air compressors, stabilize the gas in the pipeline, extend the service life of the pipeline, and ensure the normal operation of the ship.

[0032] Fig. 7 is a structural schematic diagram of a ship according to an embodiment of the present application, which shows the position of the air supply system in the entire ship gas layer drag reduction, and that the cooling system can be directly cooled using the seawater drawn in. Fig. 8 is a structural schematic diagram of another ship according to an embodiment of the present application, which shows the position of the air supply system in the entire ship gas layer drag reduction, and that the cooling system can be cooled using fresh water stored in the ship itself.

Claims

1. An air supply system applied to a gas layer resistance reduction ship, comprising: a gas tank (1) provided with an exhaust pipeline (12) and a number of intake pipelines (11), each provided with a first monitoring assembly (13) and a first remote control valve (14), the first monitoring assembly (13) configured to monitor the temperature, pressure and flow rate of gas in the corresponding exhaust pipeline (12) or intake pipeline (11), and the first remote control valve (14) configured to control the flow rate of gas passing through the corresponding exhaust pipeline (12) or intake pipeline (11); a cooling assembly (2) arranged inside the gas tank (1) and configured to reduce a temperature of a gas in the gas tank (1), the cooling assembly (2) comprising an inlet pipe (21) provided with a second remote control valve (211) and a drain pipe (22) provided with a second monitoring assembly (221) communicatively connected to each of the first monitoring assemblies (13) and the second remote control valve (211), the second monitoring assembly (221) configured to monitor a temperature and a flow rate of a fluid in the drain pipe (22), and the second remote control valve (211) configured to control a flow rate of a liquid passing through the inlet pipe (21) depending on a monitoring result of the second monitoring assembly (221) and each of the first monitoring assemblies (13). Air supply system.

2. A damper (15) corresponding to each intake pipe (11) is provided in the gas tank (1), and the damper (15) is provided immediately before the exhaust end of the intake pipe (11) corresponding to the damper (15).

2. The air supply system of claim 1.

3. The cooling assembly (2) further comprises a plurality of first cooling coils (23), one for each pair of adjacent air inlet pipes (11), each extending along the length of the gas tank (1), one end of which communicates with the inlet pipe (21) and the other end of which communicates with the discharge pipe (22).

2. The air supply system of claim 1.

4. The cooling assembly (2) further includes a second cooling coil (24) provided along the inner wall (16) of the gas tank (1), one end of which is connected to the inlet pipe (21) and the other end of which is connected to the discharge pipe (22).

2. The air supply system of claim 1.

5. The system further includes a plurality of air compressors (3) corresponding to the plurality of air intake pipes (11) in a one-to-one correspondence, and one end of each of the air intake pipes (11) is connected to the air compressor (3) corresponding to the air intake pipe (11).

2. The air supply system of claim 1.

6. The first monitoring assembly (13) comprises a first temperature sensor (131), a first pressure sensor (132) and a first flow rate sensor (133) for monitoring the temperature, pressure and flow rate of gas in the exhaust line (12) or the intake line (11) corresponding to the first monitoring assembly (13), respectively.

2. The air supply system of claim 1.

7. the second monitoring assembly (221) comprises a second temperature sensor (2211) and a second flow sensor (2212) for monitoring the temperature and flow rate of fluid in the drain (22); 2. The air supply system of claim 1.

8. The tank wall of the gas tank (1) includes an inner wall (16) and an outer wall (17) with a third cooling coil (18) provided therebetween, the third cooling coil (18) having one end communicating with the inlet pipe (21) and the other end communicating with the discharge pipe (22). An air supply system according to any one of claims 1 to 7.

9. A plurality of heat dissipation fins (19) are provided on the outer side of the tank wall of the gas tank (1). An air supply system according to any one of claims 1 to 7.

10. Equipped with an air supply system according to any one of claims 1 to 9. ship.

Images