A de-icing module for a circulating water tank

Abstract

The application relates to a deicing module of a circulating water tank, and belongs to the technical field of ships and ocean engineering. The deicing module is arranged in the circulating water tank and comprises a gathering mechanism for gathering floating ice, a conveying mechanism for conveying ice blocks and an ice storage system for storing the ice blocks which are arranged in sequence; the conveying mechanism is provided with a movable conveying belt which is arranged above a horizontal plane in normal times and is sunk below the horizontal plane in working time. The application provides a deicing module of a circulating water tank under reduced pressure, which can continuously deice under reduced pressure, reduces the influence of ice blocks or model ice on the water quality of the circulating water tank and provides strong support for ice-water propeller coupling tests under reduced pressure.

Description

Technical Field

[0001] This invention relates to a de-icing module for a circulating water tank, belonging to the field of shipbuilding and marine engineering technology. Background Technology

[0002] With global warming and the booming development of my country's overseas trade, the Arctic shipping routes have had an increasingly significant impact on my country's national interests. However, due to the complex sea conditions and ice cover in the Arctic shipping routes, various countries are building icebreakers and ice-carrying vessels capable of navigating ice-covered areas. During the design and development of these ice-carrying vessels, it is necessary not only to predict the model's resistance and propeller hydrodynamic performance, but also to forecast icebreaking speed and hull vibration and noise performance. Currently, both domestically and internationally, model tests are mainly conducted using ice pools and conventional decompression circulating water tanks to predict icebreaker icebreaking speed and propeller performance. However, current forecasting technologies are not mature, and the similarity between some actual ships and models does not meet the requirements of model testing technology.

[0003] Current methods for testing ice-propeller interaction often involve placing paraffin-coated ice models into a cavitation water tank. However, once the model ice is broken up by the propeller, it is difficult to remove, easily leading to water pollution. Accumulated ice can also clog the water tank, causing a decrease in flow velocity within the cavitation tank. This makes it impossible to conduct ice-water-propeller coupling experiments under real-world conditions. Therefore, to address these issues, this technical field urgently needs a de-icing module for circulating water tanks under depressurization conditions. This module can continuously de-ice under depressurization, reducing the impact of ice or model ice on the water quality of the circulating water tank, and providing strong support for ice-water-propeller coupling experiments under depressurization conditions. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem of how to obtain a de-icing module for a circulating water tank under depressurization conditions, which can continuously de-ic and reduce the impact of ice blocks or model ice on the water quality of the circulating water tank, and provide strong support for ice-water propeller coupling tests under depressurization conditions.

[0005] To achieve the goal of solving the above problems, the technical solution adopted by the present invention is to provide a de-icing module for a circulating water tank, which is installed in the circulating water tank and includes a gathering mechanism for gathering floating ice, a conveying mechanism for conveying ice blocks, and an ice storage system for storing ice blocks arranged in sequence; the conveying mechanism is provided with a movable conveyor belt that is normally raised above the horizontal plane and sinks below the horizontal plane during operation.

[0006] Preferably, the gathering mechanism includes two retractable panels on the left and right sides and a connecting rod; the retractable panels are connected to the side wall of the circulating water tank through the connecting rod; the surface of the retractable panels is perpendicular to the horizontal plane.

[0007] Preferably, the left and right shrink panels are respectively located on the left and right sides of the conveyor belt; the distance between the left and right shrink panels gradually decreases from the side away from the conveyor belt to the side closer to the conveyor belt.

[0008] Preferably, the conveying mechanism includes a motor, a drive shaft, a transmission shaft, a conveyor belt, a left support, a right support, and a support rotation mechanism; a drive shaft is connected to the motor drive shaft, the transmission shaft is parallel to the drive shaft, and an annular, reciprocating conveyor belt is sleeved between the drive shaft and the transmission shaft; a left support and a right support are respectively provided on both sides of the conveyor belt; the two ends of the left support and the right support are respectively sleeved on the drive shaft and the transmission shaft; the right support is provided with a support rotation mechanism for driving the conveyor belt to rotate around the drive shaft.

[0009] Preferably, the drive shaft is located on the side of the conveying mechanism near the ice storage system.

[0010] Preferably, the conveyor belt is a toothed conveyor belt, and the conveyor belt is provided with a plurality of toothed protrusions perpendicular to the plane of the conveyor belt for collecting floating ice.

[0011] Preferably, the bracket rotation mechanism includes a clutch, a clutch controller, a driven shaft, a drive gear, and a driven gear; a driven shaft is provided along the axial direction of the drive shaft; the drive shaft passes through the left bracket and the right bracket in sequence and is axially connected to the driven shaft through the clutch; a driven gear is provided on the side of the right bracket away from the conveyor belt; a drive gear that meshes with the driven gear is provided on the driven shaft on the outer side of the right bracket; a clutch controller is provided on the clutch.

[0012] Preferably, the circulating water tank is provided with a support, and a rubber pad is provided on the support, and the motor is located on the rubber pad.

[0013] Preferably, the ice storage system includes an ice storage platform, an ice storage chamber, and a return pipe; the ice storage system has an ice storage platform with a certain inclination and a smooth surface on the side near the conveyor belt; the ice storage chamber is located on the side of the ice storage platform away from the conveyor belt, and a return pipe is provided between the bottom of the ice storage chamber and the circulating water tank.

[0014] Preferably, the bottom of the ice storage chamber is provided with a grid for intercepting non-meltable plastic floating ice.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The de-icing module provided by this invention is completely sealed inside the circulating water tank during de-icing. Therefore, it can simultaneously and continuously de-ic the propeller while conducting ice-propeller interaction tests under the condition of similar propeller cavitation numbers, which not only eliminates the impact on water quality but also improves test efficiency.

[0017] 2. The ice-gathering mechanism of the de-icing module can gather floating ice in the circulating water tank in front of the conveying mechanism, thereby improving the de-icing efficiency;

[0018] 3. The transmission mechanism has a simple structure but powerful function. Relying on a single motor, it can not only realize the rotation of the transmission belt, but also make the entire transmission mechanism rotate around the drive shaft; this reduces the impact on the water flow and increases the service life of the transmission mechanism.

[0019] 4. The ice storage system of the de-icing module can not only store plastic floating ice, but also has a better effect on storing real floating ice. After the floating ice melts, it can be reinjected into the circulating water tank through the return pipe. Attached Figure Description

[0020] Figure 1 This is a general layout diagram of the de-icing module of a circulating water tank according to the present invention;

[0021] Figure 2 This is a structural diagram of the conveying mechanism of the present invention;

[0022] Figure 3 This is a structural diagram of the ice-gathering mechanism and ice storage system of the present invention;

[0023] Figure 4 This is a top view of the de-icing module of the present invention during operation.

[0024] Reference numerals: 1. Motor; 2. Mechanical seal; 3. Drive shaft; 4. Coupling; 5. Left support; 6. Conveyor belt; 7. Drive shaft; 8. Right support; 9. Driven gear; 10. Bearing; 11. Driven shaft; 12. Drive gear; 13. Clutch; 14. Clutch controller; 15. Retractable panel; 16. Connecting rod; 17. Ice storage platform; 18. Ice storage chamber; 19. Grille; 20. Return pipe; 21. Gathering mechanism; 22. Conveying mechanism; 23. Ice storage system. Detailed Implementation

[0025] To make the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings:

[0026] like Figure 1-4As shown, this invention provides a de-icing module for a circulating water tank, disposed within the circulating water tank. It includes, in sequence, a gathering mechanism 21 for gathering floating ice, a conveying mechanism 22 for conveying ice blocks, and an ice storage system 23 for storing ice blocks. The conveying mechanism 22 includes a movable conveyor belt 6 that is normally raised above the horizontal plane and submerged below the horizontal plane during operation. The gathering mechanism 21 includes two retractable panels 15 and a connecting rod 16. The retractable panels 15 are connected to the side wall of the circulating water tank via the connecting rod 16. The surface of the retractable panels 15 is perpendicular to the horizontal plane. The two retractable panels 15 are respectively disposed on the left and right sides of the conveyor belt 6. The distance between the two retractable panels 15 gradually decreases from the side farther from the conveyor belt 6 to the side closer to the conveyor belt 6. The conveying mechanism 22 includes a motor 1, a drive shaft 3, a transmission shaft 7, a conveyor belt 6, a left support 5, a right support 8, and a support rotation mechanism. The motor 1 has a drive shaft 3 connected to its drive shaft. The transmission shaft 7 is parallel to the drive shaft 3. A ring-shaped, reciprocating conveyor belt 6 is fitted between the drive shaft 3 and the transmission shaft 7. The left support 5 and right support 8 are respectively located on both sides of the conveyor belt 6. The ends of the left support 5 and right support 8 are respectively fitted onto the drive shaft 3 and the transmission shaft 7. The right support 8 has a support rotation mechanism for driving the conveyor belt 6 to rotate around the drive shaft 3. The drive shaft 3 is located on the side of the conveying mechanism closest to the ice storage system. The conveyor belt 6 is a toothed conveyor belt with multiple toothed protrusions perpendicular to the conveyor belt plane for collecting floating ice. The support rotation mechanism includes a clutch 13, a clutch controller 14, a driven shaft 11, a drive gear 12, and a driven gear 9. A driven shaft 11 is axially arranged along the drive shaft 3. The drive shaft 3 passes through the left support 5 and the right support 8 in sequence and is axially connected to the driven shaft 11 via the clutch 13. A driven gear 9 is arranged on the side of the right support 8 away from the conveyor belt 6. A drive gear 12 that meshes with the driven gear 9 is arranged on the driven shaft 11 on the outer side of the right support 8. A clutch controller 14 is arranged on the clutch 13. A support is provided in the circulating water tank, and a rubber pad is provided on the support. The motor 1 is located on the rubber pad. The ice storage system 23 includes an ice storage platform 17, an ice storage chamber 18, and a return pipe 20. An ice storage platform 17 with a certain inclination and a smooth surface is provided on the side of the ice storage system 23 near the conveyor belt 6. An ice storage chamber 18 is provided on the side of the ice storage platform 17 away from the conveyor belt 6, and a return pipe 20 is provided between the bottom of the ice storage chamber 18 and the circulating water tank. The bottom of the ice storage chamber 18 is provided with a grid 19 for intercepting non-melting plastic floating ice.

[0027] Example

[0028] This invention provides a de-icing module for a circulating water tank under depressurization conditions. The de-icing module mainly consists of three parts: a gathering mechanism 21, a conveying mechanism 22, and an ice storage system 23. Its main function is that the gathering mechanism 21 gathers floating ice in the tank in front of the conveying mechanism 22. When de-icing is needed, the conveying mechanism 22 rotates counterclockwise around the motor shaft, causing the conveyor belt 6 near the gathering mechanism 22 to insert into the water (see...). Figure 3 This allows floating ice to be transported from the liquid surface to the ice storage system 23; when de-icing is not required in the tank, the conveying mechanism 22 rotates clockwise around the motor shaft, and the conveying mechanism 22 remains parallel to the water surface and above the waterline (see...). Figure 1 By raising and lowering the conveyor mechanism 22, the influence of the mechanism on the water flow can be effectively avoided, while extending the service life of the conveyor mechanism 22.

[0029] The de-icing module operates completely sealed inside the circulating water tank during the de-icing process. Therefore, the internal pressure of the circulating water tank can be adjusted during the test to meet the cavitation number requirements when the ice propeller is in action, which is beneficial for accurately measuring the ice load and cavitation performance of the propeller.

[0030] In the transmission mechanism 22, the motor 1 is mounted on the circulating water tank support covered with rubber pads. The output shaft of the motor 1 is connected to the drive shaft 3. When the drive shaft 3 passes through the water tank, it is sealed on the inner wall of the circulating water tank by the mechanical seal 2. Since the axis of the drive shaft 3 is too long, it is connected by the coupling 4.

[0031] The left support 5 and the right support 8 are connected to the drive shaft 3 and the transmission shaft 7 respectively via bearings 10, and the toothed conveyor belt 6 is installed between the left and right supports. The driven shaft 11 is connected to the inner wall of the circulating water tank on the other side via bearings 10.

[0032] Clutch 13 is connected to drive shaft 3 via a key. When the "off" switch of clutch controller 14 is pressed, driven shaft 11 rotates synchronously with drive shaft 3. Therefore, drive gear 12 fixed on driven shaft 11 also rotates synchronously. Driven gear 9 is fixedly connected to right bracket 8 via a key. Drive gear 12 drives driven gear 9 to rotate together, thereby driving left and right brackets and conveyor belt 6 to rotate around the axis of drive shaft 3. When the "on" switch of clutch controller 14 is pressed, driven shaft 11 is disconnected from drive shaft 3. At this time, driven shaft 11 stops rotating, and only conveyor belt 6 rotates around drive shaft 3.

[0033] Two contraction panels 15 are fixedly connected to the inner wall of the circulating water tank via connecting rods 16. The width ratio of the ice block outlet end to the inlet end of the gathering mechanism 21 is 1:2, and the width of the outlet end is approximately equal to that of the conveying mechanism 22. The floating ice at the contraction opening of the contraction panel 15 is transported by the conveying mechanism 22 to the ice storage platform 17, which has a certain inclination and a smooth surface. Ice baffles are installed on both sides of the ice storage platform 17 to effectively prevent ice blocks from falling back into the water tank. The side of the ice storage platform 17 away from the gathering mechanism is connected to the ice storage chamber 18. A return pipe 20 is also installed between the ice storage chamber 18 and the circulating water tank. The melted floating ice is reinjected into the circulating water tank through the return pipe 20. Non-meltable plastic floating ice is intercepted by the grid 19 installed at the bottom of the ice storage chamber 18. After the plastic floating ice has accumulated for a period of time, the pressure-resistant cover on the ice storage chamber 18 can be opened to retrieve the plastic floating ice.

[0034] Existing circulating water tanks and cavitation water cylinders cannot meet the requirements for continuous ice-propeller interaction experiments under depressurization conditions. The plastic ice fragments broken by the propeller are difficult to remove, affecting subsequent experiments. This invention addresses this problem by providing a circulating water tank de-icing module under depressurization conditions, which has the following main advantages:

[0035] 1. The module is completely sealed inside the circulating water tank during de-icing, so it can simultaneously and continuously de-ic the propeller while conducting ice-propeller interaction tests under similar propeller cavitation numbers. This not only eliminates the impact on water quality but also improves test efficiency.

[0036] 2. The ice-gathering mechanism of the de-icing module can gather floating ice in the circulating water tank in front of the conveying mechanism, thereby improving the de-icing efficiency;

[0037] 3. The de-icing module conveying mechanism has a simple structure but powerful function. Relying on only one motor, it not only realizes the rotation of the transmission belt to transport ice blocks, but also allows the entire conveying mechanism to rotate around the axis of the drive shaft. This reduces the impact of the transmission mechanism on the water flow and increases the service life of the transmission mechanism.

[0038] 4. The ice storage system of the de-icing module can not only store plastic floating ice, but also has a better effect on storing real floating ice. After the floating ice melts, it can be reinjected into the circulating water tank through the return pipe.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A de-icing module for a circulating water tank, characterized in that, The system is sealed inside the circulating water tank and includes, in sequence, a gathering mechanism for gathering floating ice, a conveying mechanism for conveying ice blocks, and an ice storage system for storing ice blocks; the conveying mechanism includes a movable conveyor belt that is normally raised above the horizontal plane and sinks below the horizontal plane during operation. When de-icing is required, the conveyor mechanism rotates counterclockwise around the motor shaft, and the conveyor belt near the gathering mechanism is inserted into the water to transport the floating ice from the liquid surface to the ice storage system. When de-icing is not required, the conveyor mechanism rotates clockwise around the motor shaft, and the conveyor mechanism is parallel to the water surface and stays above the waterline to avoid affecting the water flow and extend the service life of the conveyor mechanism. The ice-propeller interaction test is carried out under the condition of similar propeller cavitation number, while de-icing is carried out synchronously and continuously under depressurization conditions.

2. The de-icing module for a circulating water tank according to claim 1, characterized in that, The gathering mechanism includes two retractable panels on the left and right sides and a connecting rod; the retractable panels are connected to the side wall of the circulating water tank through the connecting rod; the surface of the retractable panels is perpendicular to the horizontal plane.

3. The de-icing module for a circulating water tank according to claim 2, characterized in that, The two retractable panels are respectively located on the left and right sides of the conveyor belt; the distance between the two retractable panels gradually decreases from the side farther away from the conveyor belt to the side closer to the conveyor belt.

4. The de-icing module for a circulating water tank according to claim 1, characterized in that, The conveying mechanism includes a motor, a drive shaft, a transmission shaft, a conveyor belt, a left support, a right support, and a support rotation mechanism. A drive shaft is connected to the motor drive shaft, and the transmission shaft is parallel to the drive shaft. An annular, reciprocating conveyor belt is sleeved between the drive shaft and the transmission shaft. A left support and a right support are respectively provided on both sides of the conveyor belt. The two ends of the left and right supports are respectively sleeved on the drive shaft and the transmission shaft. A support rotation mechanism for driving the conveyor belt to rotate around the drive shaft is provided on the right support.

5. The de-icing module for a circulating water tank according to claim 4, characterized in that, The drive shaft is located on the side of the conveying mechanism near the ice storage system.

6. The de-icing module for a circulating water tank according to claim 4, characterized in that, The conveyor belt is a toothed conveyor belt, and the conveyor belt is provided with multiple tooth-shaped protrusions perpendicular to the plane of the conveyor belt for collecting floating ice.

7. The de-icing module for a circulating water tank according to claim 4, characterized in that, The bracket rotation mechanism includes a clutch, a clutch controller, a driven shaft, a drive gear, and a driven gear; a driven shaft is provided along the axial direction of the drive shaft; the drive shaft passes through the left bracket and the right bracket in sequence and is axially connected to the driven shaft through the clutch; a driven gear is provided on the side of the right bracket away from the conveyor belt; a drive gear that meshes with the driven gear is provided on the driven shaft on the outer side of the right bracket; a clutch controller is provided on the clutch.

8. The de-icing module for a circulating water tank according to claim 4, characterized in that, The circulating water tank is equipped with a support, and a rubber pad is provided on the support. The motor is located on the rubber pad.

9. The de-icing module for a circulating water tank according to claim 4, characterized in that, The ice storage system includes an ice storage platform, an ice storage chamber, and a return pipe; the ice storage platform with a certain inclination and a smooth surface is provided on the side of the ice storage system closest to the conveyor belt; the ice storage chamber is provided on the side of the ice storage platform away from the conveyor belt, and a return pipe is provided between the bottom of the ice storage chamber and the circulating water tank.

10. The de-icing module for a circulating water tank according to claim 9, characterized in that, The bottom of the ice storage chamber is equipped with a grid for intercepting non-melting plastic ice floes.

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