High-pressure jetting system for offshore wind power installation platforms

Abstract

The present invention discloses a high-pressure jetting system for an offshore wind power installation platform, comprising an air supply system, a jetting pipeline system, and a jetting structure connected in sequence; the air supply system comprises a starter air bottle 1 and a starter air bottle 2 which are arranged in parallel and serve as a backup for each other, and a starter air compressor 1 and a starter air compressor 2 which supply air to the jetting air bottle; the outlet of the jetting air bottle is connected to the jetting pipeline via a pipeline passing through a pressure reducing valve 3; the jetting pipeline is connected to a jetting ring pipe arranged at the bottom of a floating shell under the platform; the jetting ring pipe is respectively connected to two jetting water pumps 1 and 2 which serve as a backup for each other and provide jetting seawater for the entire high-pressure jetting system through a pipeline; the jetting ring pipe is connected to a number of jetting main pipes arranged in various areas at the bottom of the platform, and each jetting main pipe is connected to the jetting structure.

Description

Technical Field

[0001] The invention relates to a high-pressure jetting system for an offshore wind power installation platform. Background Art

[0002] Offshore crane platforms, with their strong wind and wave resistance, large deck area, large variable deck load, large loading capacity, wide adaptability to water depths, and multiple cabins for personnel, have become the best carriers for ultra-large cranes. Offshore crane platforms generally have multiple working conditions such as dispatching navigation, lifting operations, and storm self-survival. Their special operational functions place high demands on the design of the platform's sinking and floating system. The floating action of an offshore crane platform often includes the operation of breaking the bottom after being seated on the bottom for a long time. In other words, in order to solve the problem of the platform being attached to the bottom after being seated on the bottom for a long time, the platform needs to use flushing equipment to overcome the platform's suction force when floating. Therefore, the design of the platform's sinking and floating system often includes the design of a flushing system.

[0003] For example, Chinese patent CN108252286B discloses a bottom-based water platform and its water transportation and installation method. It discloses that when the bottom-based platform needs to be relocated, the ballast water in the ballast water tanks and the hollow cylinders of the four buoyancy tube structures within the upper platform is discharged according to the design procedure for floating and moving (equivalent to unloading the ballast), thereby generating upward buoyancy for the bottom-based platform. High-pressure water jetting equipment is then used to spray high-pressure water from the pipes within the buoyancy tube base pile structure of the four buoyancy tube structures onto the seabed, making it easier for the buoyancy tube base pile structure of the four buoyancy tube structures to detach from the seabed base surface. By discharging the ballast water in the ballast water tanks and the hollow cylinders of the four buoyancy tube structures according to the design procedure for floating and moving, the bottom-based platform is fully floated.

[0004] Traditional high-pressure water jet equipment usually has nozzles evenly arranged on the bottom. Since the bottom area of ​​the floating body under the platform is large, many nozzles need to be arranged on the bottom of the ship for the flushing system to use. This requires opening many spray holes on the bottom plate of the ship to install the nozzles, resulting in a large amount of engineering work in the dock and a long docking period for the ship. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-pressure jetting system for an offshore wind power installation platform.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a high-pressure jetting system for an offshore wind power installation platform, comprising an air supply system, a jetting pipeline system, and a jetting structure connected in sequence; the air supply system comprises a starter air bottle 1, a starter air bottle 2, a jetting air bottle, and a starter air compressor 1 and a starter air compressor 2 which are arranged in parallel and serve as backup for each other; the starter air bottle 1 is depressurized through two pipes provided with a pressure reducing valve 1 and is respectively connected to the main engine 1 and the main engine 2 to provide instrument air, and the stored air in the starter air bottle 1 meets the air volume required for starting all the instruments of the main engine 1 and the main engine 2 for 6 times; the starter air bottle 2 is depressurized through two pipes provided with a pressure reducing valve 2 and is respectively connected to the main engine 3 and the main engine 4 to provide instrument air, and the stored air in the starter air bottle 2 meets the air volume required for starting all the instruments of the main engine 3 and the main engine 4 for 6 times;

[0007] Both starting air bottle 1 and starting air bottle 2 are provided with a low-pressure trigger pressure switch for controlling the opening of starting air compressor 1 or starting air compressor 2, and a high-pressure trigger pressure switch for controlling the stopping of starting air compressor 1 or starting air compressor 2;

[0008] The flushing pipeline system includes a flushing pipeline, a compressed air flushing ring pipe, and a seawater flushing ring pipe. The outlet of the flushing air bottle is connected to the flushing pipeline through a pipeline passing through a pressure reducing valve 3. The flushing pipeline is connected to the compressed air flushing ring pipe installed at the bottom of the platform's lower buoy shell. The seawater flushing ring pipe, which is arranged in parallel with the compressed air flushing ring pipe, is connected through pipelines to two backup flushing water pumps, one and two, which provide flushing seawater for the entire high-pressure flushing system. Both flushing water pumps are equipped with a pressure sensor PT connected to the central control of the wind power installation platform and a pressure gauge PI.

[0009] The compressed air and seawater spray ring pipes are connected to several spray main pipes located in various areas at the bottom of the platform through pipes equipped with solenoid valves. The solenoid valves are used to automatically control the opening and closing of the compressed air and seawater spray ring pipes and the spray main pipes. Each spray main pipe is equipped with a pressure sensor PT connected to the central control of the wind power installation platform.

[0010] The spray structure includes spray pipes and half pipes. Each spray main pipe is connected to several spray pipes. Each spray pipe is connected to a half pipe welded to the outside of the bottom hull. End plates are provided at both ends of the half pipe. A spray cavity is formed between the bottom hull and the half pipe. Several spray holes for compressed air and fire water spraying are evenly arranged on the wall of the half pipe; the water spray direction of the spray holes on the half pipe is toward the inside and outside of the octagonal ring structure.

[0011] As a preferred solution, the outlet of the flushing air bottle is connected to the gas-using equipment on the wind power installation platform through another pipeline passing through a pressure reducing valve 4.

[0012] As a preferred solution, the flushing air cylinder is provided with a pressure sensor PT connected to the central control of the wind power installation platform to realize low pressure / high pressure alarm of the flushing air cylinder.

[0013] As a preferred solution, a connecting pipeline is provided between the outlet of the flushing air bottle and the outlets of the first starting air bottle and the second starting air bottle.

[0014] As a preferred solution, the starting air bottle 1 and the starting air bottle 2 are both provided with a pressure sensor PT connected to the central control of the wind power installation platform and a pressure gauge PI.

[0015] The beneficial effects of the present invention are:

[0016] 1. This high-pressure water jetting system adopts the form of half-tube plus jet punching to replace the traditional nozzle structure, which greatly reduces the number of openings in the bottom plate of the ship, thereby reducing the amount of engineering work in the dock and shortening the docking period. It overcomes the traditional high-pressure water jetting equipment, which usually has nozzles evenly arranged on the bottom one by one. Due to the large bottom area of ​​the floating body under the platform, it is necessary to arrange many nozzles on the bottom of the ship for the water jetting system to use. In this way, it is necessary to open many spray punching holes on the bottom plate of the ship for installing nozzles, which makes the processing and manufacturing of the bottom plate difficult, resulting in a large amount of engineering work in the dock and a long docking period of the ship. At the same time, there is a disadvantage of more damage to the hull.

[0017] 2. Since each air compressor can supply air to two starting air bottles, the outlets of starting air compressor 1 and starting air compressor 2 are equipped with connecting pipes, and the two starting air compressors serve as backup for each other. If one air compressor breaks down, the starting air bottle can be supplied with air through the other air compressor; the flushing spray air bottle and the outlets of starting air bottle 1 and starting air bottle 2 are equipped with connecting pipes, and in an emergency, the flushing spray air bottle can serve as backup for starting air bottle 1 and starting air bottle 2; the outlets of flushing spray water pump 1 and flushing spray water pump 2 are equipped with connecting pipes, and in an emergency, flushing spray water pump 1 and flushing spray water pump 2 can serve as backup for each other.

[0018] 3. Since a spray cavity is formed between the bottom shell and the half-tube, a number of spray holes for compressed air and fire water spraying are evenly arranged on the wall of the half-tube, which can better remove the adsorbed silt, break the adsorption force of the silt, and improve the spraying effect.

[0019] 4. The water spray direction of the upper spray hole of the half pipe is toward the inside and outside of the octagonal ring structure, which discharges the seabed silt to the inside and outside of the octagonal ring structure, and can better remove the adsorbed silt and eliminate the adsorption force.

[0020] 5. Two main loops, compressed air spray ring pipe and seawater spray ring pipe, are set up to control the spray main pipe of each spray area to use seawater or compressed air for spraying separately, which has good flexibility, improves the spraying effect and reduces the spraying cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a pipeline layout diagram of the high-pressure jetting system of an offshore wind power installation platform in an embodiment of the present invention.

[0022] Figure 2 This is a diagram of the pipeline layout at the bottom of the lower floating body of the high-pressure jetting system of the offshore wind power installation platform in an embodiment of the present invention.

[0023] Figure 3 for Figure 2 A partial enlarged view of the A direction.

[0024] Figure 4 This is a schematic diagram of the spray pipe and half-pipe structure of the high-pressure spray system in an embodiment of the present invention.

[0025] Figure 5 for Figure 4 Schematic diagram from another angle.

[0026] Figure 6 This is another structural schematic diagram of the spray pipe and half pipe of the high-pressure spray system in an embodiment of the present invention.

[0027] In the attached figure

[0028] 1. Air supply system 2. Spray pipe system 3. Spray structure

[0029] 101. Start air compressor 1 102. Start air compressor 2 201. Start air bottle 1

[0030] 202. Start air bottle 2 203. Pressure reducing valve 1 204. Pressure reducing valve 2

[0031] 205, Pressure Reducing Valve 3 206, Pressure Reducing Valve 4

[0032] 301, host one 302, host two 303, host three

[0033] 304, Host 4

[0034] 401, spray air bottle 402, spray pipeline 403, compressed air spray ring pipe

[0035] 500. Seawater spraying ring pipe

[0036] 501, flushing spray pump 1 502, flushing spray pump 2 503, flushing spray main pipe

[0037] 504, spray hole 505, spray pipe 506, half pipe DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-6 As shown, the high-pressure jetting system of the offshore wind power installation platform includes an air supply system 1, a jetting pipeline system 2, and a jetting structure 3 connected in sequence.

[0040] The air supply system 1 includes a starter air bottle 1 201, a starter air bottle 202, a spray air bottle 401, and a starter air compressor 101 and a starter air compressor 2 102, which are arranged in parallel and serve as backup for each other. Each of the starter air bottle 1 201, the starter air bottle 202, and the spray air bottle 401 is provided with a low-pressure trigger pressure switch for controlling the opening of the starter air compressor 101 or the starter air compressor 2 102, and a high-pressure trigger pressure switch for controlling the stopping of the starter air compressor 101 or the starter air compressor 2 102.

[0041] Starting air bottle 1 201 and starting air bottle 2 202 are both provided with a pressure sensor PT and a pressure gauge PI connected to the central control of the wind power installation platform; the pressure sensor PT is connected to the central control to realize low pressure / high pressure alarm for the starting air bottle, thereby monitoring the internal pressure of the starting air bottle to achieve protection and early warning functions.

[0042] The flushing pipeline system 2 includes a flushing pipeline 402, a compressed air flushing ring pipe 403, and a seawater flushing ring pipe 500. The outlet of the flushing air bottle 401 is connected to the flushing pipeline 402 of the flushing pipeline system 2 via a pipeline passing through a pressure reducing valve 3 205. The flushing pipeline 402 is connected to the compressed air flushing ring pipe 403, which is installed at the bottom of the platform's lower buoyancy shell. The seawater flushing ring pipe 500, which is arranged in parallel with the compressed air flushing ring pipe 403, is connected via pipelines to two backup flushing pumps 1 501 and 2 502, respectively, which provide flushing seawater for the entire high-pressure flushing system. Each flushing pump 1 501 and 2 502 are equipped with a pressure sensor PT and a pressure gauge PI connected to the central control system of the wind turbine installation platform. The pressure sensor PT is connected to the central control system to provide low-pressure / high-pressure alarms for the seawater flushing ring pipe 500, thereby monitoring the internal pressure of the seawater flushing ring pipe 500 for protection and early warning. The compressed air spray ring pipe 403 and the seawater spray ring pipe 500 are respectively connected to several spray main pipes 503 arranged in various areas at the bottom of the platform. The compressed air spray ring pipe 403 and the seawater spray ring pipe 500 are respectively connected to the spray main pipe 503 through solenoid valves. The solenoid valves are used to automatically control the on and off of the compressed air spray ring pipe 403, the seawater spray ring pipe 500 and the spray main pipe 503; each spray main pipe 503 is provided with a pressure sensor PT connected to the central control of the wind power installation platform. The pressure sensor PT is connected to the central control to realize low pressure / high pressure alarm of the spray main pipe 503, thereby monitoring the internal pressure of the spray main pipe 503 to achieve protection and early warning functions.

[0043] The spraying structure 3 includes a spraying pipe 505 and a half-pipe 506. Each spraying main pipe 503 is connected to several spraying pipes 505. Each spraying pipe 505 is connected to a half-pipe 506 welded to the outside of the bottom hull of the ship. End plates are provided at both ends of the half-pipe 506. A spraying cavity is formed between the bottom hull and the half-pipe 506. Several spraying holes 504 for compressed air and fire water spraying are evenly arranged on the wall of the half-pipe 506.

[0044] Conventional high-pressure water jetting equipment usually has nozzles evenly arranged on the bottom. Since the bottom area of ​​the floating body under the platform is large, many nozzles need to be arranged on the bottom of the ship for the flushing and spraying system. This requires opening many spray holes on the bottom plate of the ship to install the nozzles, which makes the processing and manufacturing of the bottom plate difficult, resulting in a large amount of work in the dock and a long docking period for the ship. At the same time, there is a disadvantage of causing more damage to the hull. In the embodiment of the present invention, the nozzle is replaced with a half-tube plus a spray punching form, which greatly reduces the number of holes in the bottom plate of the ship, greatly reduces the amount of work in the dock, shortens the docking period, and also reduces damage to the hull. The water spray direction of the upper flushing hole of the half-tube 506 is toward the inside and outside of the octagonal ring structure, discharging the seabed silt to the inside and outside of the octagonal ring structure, which can better remove the adsorbed silt and eliminate the adsorption force.

[0045] A pressure sensor PT connected to the wind turbine installation platform's central control system is installed on the flush air bottle 401 to provide low / high pressure alarms. A connecting pipe connects the outlet of the flush air bottle 401 to the outlets of starting air bottle 1 201 and starting air bottle 2 202. In emergency situations, the flush air bottle 401 can serve as a backup for starting air bottle 1 201 and starting air bottle 2 202.

[0046] Working method of high pressure jetting system:

[0047] Working mode 1:

[0048] Step 1: System startup initialization

[0049] Confirm whether the compressed air pressure in the spray air bottle 401 meets the spray requirement (30 bar). If so, proceed to step 2. If not, automatically control the low-pressure trigger pressure switch or the high-pressure trigger pressure switch to start or stop the air compressor 1 101 or start the air compressor 2 102 to inflate the spray air bottle 401 until the compressed air pressure in the spray air bottle 401 meets the spray requirement (30 bar), and then proceed to step 2.

[0050] Step 2: Start the seawater spray

[0051] Open the valve on the connecting pipeline of the spray water pump 1 501 (spray water pump 2 502), and keep the valve on the connecting pipeline of the spray water pump 2 502 (spray water pump 1 501) closed to provide high-pressure spray seawater for the seawater spray ring pipe 500. Open the solenoid valves connected to the seawater spray ring pipe 500 on each spray main pipe 503, and the high-pressure spray seawater passes through each spray main pipe 503 to the half pipe 506 connected to each spray pipe 505 for seawater spraying;

[0052] Step 3: Switch to compressed air spray

[0053] When the pressure sensor PT provided on each flushing main pipe 503 detects that the pressure value in the corresponding flushing main pipe 503 exceeds the preset pressure value of 2 bar, it indicates that the flushing area is blocked or seawater cannot be flushed. Then, the solenoid valve connected to the seawater flushing ring pipe 500 on the flushing main pipe 503 in the corresponding flushing area is cut off, and the solenoid valve connected to the compressed air flushing ring pipe 403 on the flushing main pipe 503 in the flushing area is opened, and the flushing air bottle 401 is started, so that the flushing main pipe 503 in the area is switched to the compressed air flushing ring pipe 403 to provide compressed air for flushing. The solenoid valves in other areas remain in the original state, and the flushing main pipe 503 still uses seawater for flushing.

[0054] This is designed to deal with the situation where seawater cannot be used to spray in some areas. When this happens, it switches to compressed air spraying, which has a better spraying effect. It has good flexibility and can also monitor the internal pressure of the spray main pipe 503 to achieve protection and early warning functions.

[0055] Step 4: Switch to seawater spray

[0056] When the compressed air spraying time in the area has been switched to the compressed air spraying for 20 minutes or when the pressure sensor PT on the spraying main pipe 503 in this area detects that the air pressure in this spraying main pipe 503 is lower than the starting value of 2 bar, the spraying air bottle 401 is closed, the solenoid valve connected to the seawater spraying ring pipe 500 on the spraying main pipe 503 in the corresponding spraying area is opened, and the solenoid valve connected to the compressed air spraying ring pipe 403 on the spraying main pipe 503 in the spraying area is cut off, and the seawater spraying pipeline is switched to use seawater spraying;

[0057] Step 5: Stop spraying

[0058] When the pressure sensors PT on all the flushing and spraying main pipes 503 detect that the pressure in the flushing and spraying main pipes 503 in the corresponding area is lower than the starting value of 3 bar, the flushing and spraying water pump 1 501 (flushing and spraying water pump 2 502) is closed, and at the same time, the valves on the pipeline where the flushing and spraying water pump 1 501 (flushing and spraying water pump 2 502) is located are closed, and all the solenoid valves in the flushing and spraying pipeline system 2 are closed, and the platform floating action is executed.

[0059] Working mode 1 mainly uses seawater for blasting. Seawater can be obtained locally, which greatly reduces the cost of blasting and is easy to use. However, compared with compressed air blasting, seawater blasting has poorer effects and lower blasting efficiency. It is suitable for low-cost situations and no requirements on operation time.

[0060] Working mode 2:

[0061] Step 1: System startup initialization

[0062] Confirm whether the compressed air pressure in the spray air bottle 401 meets the spray requirement (30 bar). If so, proceed to step 2. If not, automatically control the low-pressure trigger pressure switch or the high-pressure trigger pressure switch to start or stop the air compressor 1 101 or start the air compressor 2 102 to inflate the spray air bottle 401 until the compressed air pressure in the spray air bottle 401 meets the spray requirement (30 bar), and then proceed to step 2.

[0063] Step 2: Start the seawater spray

[0064] Open the valve on the connecting pipeline of the spray water pump 1 501 (spray water pump 2 502), and keep the valve on the connecting pipeline of the spray water pump 2 502 (spray water pump 1 501) closed to provide high-pressure spray seawater for the seawater spray ring pipe 500. Open the solenoid valves connected to the seawater spray ring pipe 500 on each spray main pipe 503, and the high-pressure spray seawater passes through each spray main pipe 503 to the half pipe 506 connected to each spray pipe 505 for seawater spraying;

[0065] Continue spraying for 1 hour, and then proceed to step 4. If, during the seawater spraying process (within 1 hour), the pressure sensor PT installed on the spraying main pipe 503 detects that the pressure value in the spraying main pipe 503 in the corresponding spraying area exceeds the preset pressure value of 2 bar, it indicates that the spraying area is blocked or seawater cannot be sprayed, and then proceed to step 3.

[0066] Step 3: Switch to compressed air spraying locally

[0067] Cut off the solenoid valve connected to the seawater spraying ring pipe 500 on the spraying main pipe 503 in the corresponding spraying area, open the solenoid valve connected to the compressed air spraying ring pipe 403 on the spraying main pipe 503 in the spraying area, start the spraying air bottle 401, and switch the spraying main pipe 503 in this area to the compressed air spraying ring pipe 403 to provide compressed air for spraying. The solenoid valves in other areas remain in their original state, and the spraying main pipe 503 still uses seawater for spraying;

[0068] When the pressure sensor PT detects that the pressure value in the flushing main pipe 503 of the corresponding flushing area is lower than the preset pressure value of 2 bar, the flushing air bottle 401 is closed, and the solenoid valve connected to the seawater flushing ring pipe 500 on the flushing main pipe 503 in the corresponding flushing area is opened. At the same time, the solenoid valve connected to the compressed air flushing ring pipe 403 on the spraying main pipe 503 in this spraying area is cut off, and the seawater flushing pipeline is switched to continue to use seawater flushing until the flushing time reaches 1 hour;

[0069] Step 4: Start the compressed air spray

[0070] Turn off the spray water pump 1 501 (spray water pump 2 502), and at the same time, close the corresponding valves on the connection pipelines of the spray water pump 1 501 (spray water pump 2 502), cut off the solenoid valves connected to the seawater spray ring pipe 500 on all the spray main pipes 503, open the solenoid valves connected to the compressed air spray ring pipe 403 on the spray main pipe 503, start the spray air bottle 401, and switch all the spray main pipes 503 to the compressed air spray ring pipe 403 to provide compressed air for spraying;

[0071] Step 5: Stop spraying

[0072] When the pressure sensors PT on all the jet main pipes 503 detect that the pressure of the jet main pipes 503 in the corresponding area is lower than the starting value of 2 bar, the jet air bottle 401 is closed, and at the same time, the valve on the jet pipeline 402 is closed, and all the solenoid valves in the jet pipeline system 2 are closed to execute the platform floating action.

[0073] Working mode 2 first uses seawater for preliminary flushing, and then switches to the compressed air flushing pipeline to use compressed air for flushing. Compared with seawater flushing, compressed air has an expansion effect, and the amount of energy generated by compressed air during the flushing process is relatively large. Using compressed air for flushing can produce better flushing effects in a short time and high flushing efficiency, but the cost of compressed air is relatively high. Therefore, mode 2 is suitable for situations with requirements for operation time, and is suitable for situations where rapid ascent and rapid flushing are required.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A high-pressure jetting system for an offshore wind power installation platform, comprising an air supply system, a jetting pipeline system, and a jetting structure connected in sequence; characterized in that: The air supply system includes a starter air bottle 1, a starter air bottle 2, a flushing air bottle, and a starter air compressor 1 and a starter air compressor 2 which are arranged in parallel and serve as backup for each other. The starter air bottle 1 is connected to the main unit 1 and the main unit 2 respectively after being depressurized by two pipes provided with a pressure reducing valve 1 to provide instrument air. The stored air in the starter air bottle 1 meets the air volume required for starting all the instruments of the main unit 1 and the main unit 2 for 6 times. The starter air bottle 2 is connected to the main unit 3 and the main unit 4 respectively after being depressurized by two pipes provided with a pressure reducing valve 2 to provide instrument air. The stored air in the starter air bottle 2 meets the air volume required for starting all the instruments of the main unit 3 and the main unit 4 for 6 times. Both starting air bottle 1 and starting air bottle 2 are provided with a low-pressure trigger pressure switch for controlling the opening of starting air compressor 1 or starting air compressor 2, and a high-pressure trigger pressure switch for controlling the stopping of starting air compressor 1 or starting air compressor 2; The flushing and spraying pipeline system includes a flushing and spraying pipeline, a compressed air flushing ring pipe, and a seawater flushing ring pipe; the outlet of the flushing and spraying air bottle is connected to the flushing and spraying pipeline through a pipeline passing through a pressure reducing valve 3; the flushing and spraying pipeline is connected to the compressed air flushing ring pipe arranged at the bottom of the floating shell under the platform; the seawater flushing ring pipe arranged in parallel with the compressed air flushing ring pipe is connected through a pipeline to two flushing and spraying water pumps 1 and 2, which serve as backup for each other and provide flushing seawater for the entire high-pressure flushing and spraying system. The flushing and spraying water pumps 1 and 2 are both provided with a pressure sensor PT connected to the central control of the wind power installation platform and a pressure gauge PI; The compressed air and seawater spray ring pipes are connected to several spray main pipes located in various areas at the bottom of the platform through pipes equipped with solenoid valves. The solenoid valves are used to automatically control the opening and closing of the compressed air and seawater spray ring pipes and the spray main pipes. Each spray main pipe is equipped with a pressure sensor PT connected to the central control of the wind power installation platform. The spraying structure includes a spraying pipe and a half-pipe. Each spraying main pipe is connected to several spraying pipes. Each spraying pipe is connected to a half-pipe welded to the outer side of the bottom shell of the ship. End plates are provided at both ends of the half-pipe. A spraying cavity is formed between the bottom shell and the half-pipe. Several spraying holes for compressed air and fire water spraying are evenly arranged on the wall of the half-pipe; the water spraying direction of the spraying holes on the half-pipe is toward the inner and outer sides of the octagonal ring structure.

2. The high-pressure jetting system for an offshore wind power installation platform according to claim 1, characterized in that: The outlet of the flushing air bottle is connected to the gas-using equipment on the wind power installation platform through another pipeline and a pressure reducing valve 4.

3. The high-pressure jetting system for an offshore wind power installation platform according to claim 2, characterized in that: The flushing air bottle is provided with a pressure sensor PT connected to the central control of the wind power installation platform to realize low pressure / high pressure alarm of the flushing air bottle.

4. The high-pressure jetting system for an offshore wind power installation platform according to claim 3, characterized in that: A connecting pipeline is provided between the outlet of the spray air bottle and the outlets of the first starting air bottle and the second starting air bottle.

5. The high-pressure jetting system for an offshore wind power installation platform according to claim 4, characterized in that: The starting air bottle 1 and the starting air bottle 2 are both provided with a pressure sensor PT and a pressure gauge PI connected to the central control of the wind power installation platform.

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