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EP-4296154-B1 - GAS SUPPLY SYSTEM APPLICABLE TO GAS LAYER DRAG REDUCTION SHIP, AND SHIP

EP4296154B1EP 4296154 B1EP4296154 B1EP 4296154B1EP-4296154-B1

Inventors

  • XIA, Haochao
  • GAO, Lijin
  • CHEN, SHAOFENG
  • YUN, Qiuqin
  • WU, ZAN
  • HUANG, Guofu
  • HUANG, Shuquan

Dates

Publication Date
20260506
Application Date
20210304

Claims (10)

  1. An air supply system, applicable to an air layer drag reduction ship, comprising: an air tank (1) provided with an air outlet pipeline (12) and a plurality of air inlet pipelines (11), wherein the air outlet pipeline (12) and the plurality of air inlet pipelines (11) are each provided with a first monitoring assembly (13) and a first remote control valve (14), the first monitoring assembly (13) is configured to monitor a temperature, pressure, and a flow of air in the air outlet pipeline (12) or one of the plurality of air inlet pipelines (11) corresponding to the first monitoring assembly (13), and the first remote control valve (14) is configured to control an air flow through the air outlet pipeline (12) or one of the plurality of air inlet pipelines (11) corresponding to the first remote control valve (14); characterised by a cooling assembly (2) disposed inside the air tank (1) and configured to reduce a temperature of air in the air tank (1); wherein the cooling assembly (2) comprises a liquid inlet pipe (21) and a liquid outlet pipe (22), the liquid outlet pipe (22) is provided with a second monitoring assembly (221), the second monitoring assembly (221) is configured to monitor a temperature and a flow of a fluid in the liquid outlet pipe (22), the liquid inlet pipe (21) is provided with a second remote control valve (211), the second monitoring assembly (221) and the first monitoring assembly (13) are communicatively connected to the second remote control valve (211), and the second remote control valve (211) is configured to control a liquid flow through the liquid inlet pipe (21) according to monitoring results of the second monitoring assembly (221) and the first monitoring assembly (13).
  2. The air supply system according to claim 1, wherein a plurality of baffle plates (15) are provided inside the air tank (1), the plurality of baffle plates (15) correspond to the plurality of air inlet pipelines (11) one to one, and each baffle plate (15) of the plurality of baffle plates (15) is disposed directly in front of an air outlet end of a corresponding one of the plurality of air inlet pipelines (11).
  3. The air supply system according to claim 1, wherein the cooling assembly (2) further comprises a plurality of first cooling coils (23), one of the plurality of first cooling coils (23) is disposed between every two adjacent air inlet pipelines (11), each of the plurality of first cooling coils (23) extends along a length direction of the air tank (1), and each of the plurality of first cooling coils (23) has an end communicating with the liquid inlet pipe (21) and another end communicating with the liquid outlet pipe (22).
  4. The air supply system according to claim 1, wherein the cooling assembly (2) further comprises a second cooling coil (24) disposed along an inner wall (16) of the air tank (1), wherein the second cooling coil (24) comprises an end communicating with the liquid inlet pipe (21) and another end communicating with the liquid outlet pipe (22).
  5. The air supply system according to claim 1, further comprising a plurality of air compressors (3) corresponding to the plurality of air inlet pipelines (11) one to one, wherein an end of each air inlet pipeline (11) of the plurality of air inlet pipelines (11) is connected to a corresponding one of the plurality of air compressors (3).
  6. The air supply system according to claim 1, wherein the first monitoring assembly (13) comprises a first temperature sensor (131), a first pressure sensor (132), and a first flow sensor (133) configured to monitor the temperature, the pressure, and the flow of the air in the air outlet pipeline (12) or one of the plurality of air inlet pipelines (11) corresponding to the first monitoring assembly (13), respectively.
  7. The air supply system according to claim 1, wherein the second monitoring assembly (221) comprises a second temperature sensor (2211) and a second flow sensor (2212) configured to monitor the temperature and the flow of the fluid in the liquid outlet pipe (22).
  8. The air supply system according to any one of claims 1 to 7, wherein a tank wall of the air tank (1) comprises an inner wall (16) and an outer wall (17), a third cooling coil (18) is disposed between the inner wall (16) and the outer wall (17), and the third cooling coil (18) comprises an end communicating with the liquid inlet pipe (21) and another end communicating with the liquid outlet pipe (22).
  9. The air supply system according to any one of claims 1 to 7, wherein a plurality of heat sink fins (19) are provided on an outer side of a tank wall of the air tank (1).
  10. A ship, comprising a pressure stabilizing cavity, and the air supply system according to any one of claims 1 to 9.

Description

TECHNICAL FIELD The present application relates to the technical field of air layer drag reduction ships, for example, an air supply system applicable to an air layer drag reduction ship and a ship. BACKGROUND An air layer drag reduction system of a ship includes subsystems, such as air supply, pressure stabilization, air injection, control. An air supply system uses multiple air compressors for air supply. When the number of air compressors is relatively large, the multiple air compressors interfere with each other, complex pipeline structures affect each other, and a pipeline connection has a relatively great loss, resulting in the unstable output of the air supply system and an unstable gas in a pipeline. Meanwhile, a conventional low-pressure air compressor, such as an oil-free screw air compressor, discharges a gas with a relatively high temperature which can reach more than 100 °C or even 200 °C. When a high-temperature gas runs in the pipeline, damage or danger is caused. EP 3 162 690 B discloses an example of an air layer drag reduction system of a ship. SUMMARY The present application provides an air supply system applicable to an air layer drag reduction ship and a ship to connect air compressors, stabilize output air, and reduce the temperature of the output air, thereby improving the applicability and stability of the air supply system. An air supply system as claimed applicable to an air layer drag reduction ship is provided. The air supply system includes an air tank and a cooling assembly. The air tank is provided with an air outlet pipeline and multiple air inlet pipelines, where the air outlet pipeline and the multiple air inlet pipelines are each provided with a first monitoring assembly and a first remote control valve, the first monitoring assembly is configured to monitor a temperature, pressure, and a flow of air in the air outlet pipeline or one of the multiple air inlet pipelines corresponding to the first monitoring assembly, and the first remote control valve is configured to control an air flow through the air outlet pipeline or one of the multiple air inlet pipelines corresponding to the first remote control valve. The cooling assembly is disposed inside the air tank and configured to reduce a temperature of air in the air tank; where the cooling assembly includes a liquid inlet pipe and a liquid outlet pipe, the liquid outlet pipe is provided with a second monitoring assembly, the second monitoring assembly is configured to monitor a temperature and a flow of a fluid in the liquid outlet pipe, the liquid inlet pipe is provided with a second remote control valve, the second monitoring assembly and the first monitoring assembly are communicatively connected to the second remote control valve, and the second remote control valve is configured to control a liquid flow through the liquid inlet pipe according to monitoring results of the second monitoring assembly and the first monitoring assembly. A ship including the preceding air supply system is further provided. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a structural diagram of an air supply system according to an embodiment of the present application.FIG. 2 is a sectional view of an air tank according to an embodiment of the present application.FIG. 3 is a cross-sectional view of an air tank according to an embodiment of the present application.FIG. 4 is a diagram of control principles of an air supply system according to an embodiment of the present application.FIG. 5 is a schematic diagram of a mounting manner of a baffle plate according to an embodiment of the present application.FIG. 6 is a structural diagram of a tank body of an air tank according to an embodiment of the present application.FIG. 7 is a structural diagram of a ship according to an embodiment of the present application.FIG. 8 is a structural diagram of another ship according to an embodiment of the present application. Reference list 1air tank11air inlet pipeline12air outlet pipeline13first monitoring assembly131first temperature sensor132first pressure sensor133first flow sensor14first remote control valve15baffle plate16inner wall17outer wall18third cooling coil19heat sink fin2cooling assembly21liquid inlet pipe211second remote control valve22liquid outlet pipe221second monitoring assembly2211second temperature sensor2212second flow sensor23first cooling coil24second cooling coil3air compressor DETAILED DESCRIPTION Hereinafter technical solutions in embodiments of the present application are described in conjunction with the drawings in the embodiments of the present application. Generally, components of embodiments of the present application described and illustrated in the drawings may be arranged and designed through various configurations. Similar reference numerals and letters indicate similar items in the drawings. Therefore, once an item is defined in one drawing, the item no longer needs to be defined and explained in subsequent drawings. In the descri