An assisted icebreaking device based on the gravity flow method

Abstract

The application discloses an auxiliary ice breaking device based on a gravity flow method, which comprises a water tank, guide rails are arranged on the two sides of the water tank, sliding blocks are arranged on the guide rails, the sliding blocks of the two sides of the guide rails are connected through connecting plates, driving devices are arranged on the connecting plates, the connecting plates are connected with a ship model through connecting rods, air outlets are arranged on the two sides of a bow waterline of the ship model, the air outlets are connected with gas conveying pipelines, the gas conveying pipelines are connected with a high-pressure gas source system, nozzle devices are arranged on the air outlets, the axis direction of the nozzle devices forms a downward inclination angle of 8-14 degrees with a waterline surface, adjusting stop valves and pressure reducing valves are arranged on the gas conveying pipelines, pressure sensors are arranged on the gas conveying pipelines, the pressure sensors are connected with a controller, and the controller is connected with the stop valves and the pressure reducing valves. The auxiliary ice breaking device based on the gravity flow method can break ice with the help of the air cavity ice breaking principle. The method can reduce the ice breaking resistance of a ship and improve the ice breaking efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to an auxiliary icebreaking device based on gravity flow method, belonging to the field of fluid mechanics and ships. BACKGROUND

[0002] Air cushion vehicles perform well in icebreaking, whose principle is to inject air under the ice to form a gas cavity, so that the ice layer loses elastic support, thereby reducing the icebreaking resistance and improving the icebreaking capacity. Currently, this technology is mainly used for inland river patrol, but has not been applied to polar icebreakers. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide an auxiliary icebreaking device based on gravity flow method to assist in icebreaking by using the gas cavity icebreaking principle. This method can reduce the icebreaking resistance of the ship and improve the icebreaking efficiency.

[0004] Technical scheme: To solve the above technical problems, the auxiliary icebreaking device based on gravity flow method of the present application comprises a water tank, guide rails are arranged on both sides of the water tank, sliding blocks are installed on the guide rails, the sliding blocks of the two guide rails are connected through a connecting plate, a driving device is installed on the connecting plate, a connecting rod is connected between the connecting plate and a ship model below the connecting plate, air outlets are arranged on both sides of the bow waterline of the ship model, the air outlets are connected with gas conveying pipelines, the gas conveying pipelines are connected with a high-pressure gas source system, a nozzle device is installed on the air outlets, the axis direction of the nozzle device forms an 8°-14° downward inclination angle with the waterline surface; an adjusting stop valve and a pressure reducing valve are arranged on the gas conveying pipelines, a pressure sensor is arranged on the gas conveying pipelines, the pressure sensor is connected with a controller, and the controller is connected with the stop valve and the pressure reducing valve.

[0005] As a preferred, the driving device comprises a driving motor, a driving gear is arranged on the motor shaft of the driving motor, the driving gear is engaged with a driven gear, the driven gear is installed on a driven shaft, the driven shaft is fixed on the connecting plate through a bearing, driving gears are fixedly connected to both ends of the driven shaft, a rack is arranged on the guide rail, the driving gears are engaged with the rack, and the connecting plate is driven to move through the driving gears.

[0006] As a preferred, the downward inclination angle is 10°-12°.

[0007] As a preferred, the downward inclination angle is 10°.

[0008] As a preferred, the diameter of the air outlet is 1-2 mm.

[0009] Advantages: Compared with the prior art, the present application has the following advantages

[0010] ①Compared with the case without air injection, the ice load of the ship is significantly reduced, effectively improving the icebreaking efficiency of the ship, and making the ship sail more smoothly in the ice sea area.

[0011] ②The present invention can adjust the airflow parameters according to the actual ice conditions, and has strong adaptability.

[0012] ③ Compared with traditional icebreaking methods, the present invention can reduce the impact on the hull structure and propulsion system, and improve the durability of the icebreaker.

[0013] ④ Compared with traditional hovercraft, the bow opening method is more flexible and can be extended to other polar navigation vessels, which has important engineering value and economic benefits. Attached Figure Description

[0014] Fig. 1 A schematic diagram of the present invention.

[0015] Fig. 2 This is a schematic diagram of the air outlet in this invention.

[0016] Fig. 3 This is a schematic diagram of the driving mechanism of the present invention.

[0017] In the diagram: 1. Trailer; 2. Connecting rod; 3. Boat model; 4. Air vent; 5. Air pipe; 6. Hose; 7. Air supply system; 8. Pressure reducing valve; 9. Water tank; 10. Ice surface; 11. Drive gear; 12. Connecting plate; 13. Rack; 14. Driven gear; 15. Drive motor; 16. Driven shaft. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] like Figs. 1 to 3 As shown, an auxiliary icebreaking device based on gravity flow method of the present invention includes a water tank. Guide rails are provided on both sides of the water tank, and sliders are installed on the guide rails. The sliders on both sides of the guide rails are connected by a connecting plate. A driving device is installed on the connecting plate. The lower part of the connecting plate is connected to a ship model via a connecting rod. Air vents with a diameter of 1-2 mm are provided on both sides of the bow waterline of the ship model. The air vents are connected to an air supply pipe, which is connected to a high-pressure air source system. A nozzle device is installed on the air vent. The axis of the nozzle device forms a downward tilt angle of 8°-14° with the waterline, preferably 10°-12°, with 10° being the most suitable. A regulating shut-off valve and a pressure reducing valve are provided on the air supply pipe. A pressure sensor is provided on the air supply pipe and connected to a controller. The controller is connected to the shut-off valve and the pressure reducing valve.

[0020] In the application, the driving device comprises a driving motor, a driving gear is arranged on a motor shaft of the driving motor, the driving gear is engaged with a driven gear, the driven gear is mounted on a driven shaft, the driven shaft is fixed on a connecting plate through a bearing, driving gears are fixedly connected to two ends of the driven shaft, a rack is arranged on a guide rail, the driving gears are engaged with the rack, and the connecting plate is driven to move through the driving gears.

[0021] In the application, the ship model simulates the "Xuelong 2" polar research ship according to a 1:60 scale ratio, and main technical parameters include: a total length of 2.04 m, a type width of 0.37 m, a designed draft depth of 0.13 m, and air holes are innovatively arranged on both sides of a bow waterline. The air jet system is composed of a high-pressure air source system, two air conveying pipelines and a double-nozzle assembly. The core component of the system is a nozzle device symmetrically arranged on both sides of the bow waterline, which is installed close to the waterline surface and has an axis direction forming a 10° downward angle with the waterline surface. The device adopts a precision nozzle with a diameter of 1 mm, which is connected in a closed loop with the air source system through an air outlet pipe. In the system operation, the gas flow can be accurately controlled by cooperatively adjusting the stop valve and the pressure reducing valve, so that the best icebreaking effect under different speeds and air jet flows can be ensured. The pressure measurement system is composed of a pressure sensor, a data acquisition system and a data storage system. The driving system is composed of a track on the top of the water tank side wall and a trailer. The trailer is driven to move at a constant speed in a straight line to drive the ship to move in a straight line in the pool, so as to complete the ice resistance measurement.

[0022] The above only describes the preferred embodiments of the application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the application, and these improvements and refinements should also be considered as the protection scope of the application.

Claims

1. An auxiliary ice-breaking device based on gravity flow method, characterized in that: The system includes a water tank with guide rails on both sides. Slider blocks are mounted on the guide rails, and the sliders on both sides are connected by a connecting plate. A drive device is mounted on the connecting plate, which is connected to a ship model via a connecting rod. Air vents are located on both sides of the bow waterline of the ship model, connected to an air supply pipe. The air supply pipe is connected to a high-pressure air source system. Nozzle devices are mounted on the air vents, with the nozzle device's axis forming an 8°-14° downward tilt angle with the waterline. An adjusting shut-off valve and a pressure reducing valve are installed on the air supply pipe, which is also equipped with a pressure sensor connected to a controller. The controller is connected to the shut-off valve and the pressure reducing valve. The drive device includes a drive motor with a drive gear on its motor shaft. The drive gear meshes with a driven gear, which is mounted on a driven shaft. The driven shaft is fixed to the connecting plate by bearings, and drive gears are fixedly connected to both ends of the driven shaft. A rack is mounted on the guide rail, meshing with the drive gear, which drives the connecting plate to move.

2. The auxiliary ice-breaking device based on gravity flow method according to claim 1, characterized in that: The downward tilt angle is 10°-12°.

3. The auxiliary ice-breaking device based on gravity flow method according to claim 2, characterized in that: The downward tilt angle is 10°.

4. The auxiliary ice-breaking device based on gravity flow method according to claim 1, characterized in that: The diameter of the air outlet is 1-2 mm.

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