Water pumping system of liquid lubrication drag reduction ship

Abstract

The utility model relates to a water pumping system of a liquid lubrication anti-drag ship, which comprises a ship body, two groups of nozzles with arc-shaped structures are arranged at the bottom of the ship body, and jet orifices of the nozzles correspond to the surface of the bottom of the ship; a liquid storage cabin is fixedly placed on a bow of the ship body, a water pump is fixedly installed at an engine room in the ship body, an output port of the liquid storage cabin is connected with the water pump through a main pipeline, and an output port of the water pump is connected with a nozzle through a plurality of branch pipelines. The device is compact and reasonable in structure and convenient to operate, and the uniformity and the stability of a liquid lubricating layer are remarkably improved by optimizing a water pumping structure and a liquid distribution mode. The system comprises a liquid storage tank, a water pump, a liquid conveying pipeline and distribution nozzles, the liquid flow can be automatically adjusted according to the ship navigational speed, and therefore the water resistance during ship navigation is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of ship drag reduction pumping systems, and in particular to a pumping system for a liquid lubrication drag reduction ship. Background Technology

[0002] During the launch process of amphibious vessels in environments such as tidal flats and swamps, the adhesion resistance between the hull and the mud and sand is one of the main factors affecting whether the vessel can launch.

[0003] Existing drag reduction methods include optimizing hull design, using special coatings, and injecting gas into the hull to form a stable air film. However, for vessels that commonly employ a combination of air-cushioned propulsion and planing, forming a stable air film layer on the hull to isolate the hull from mudflats and swamps requires installing an air propeller propulsion system (similar to an automobile engine) at the stern. A rudder and air cushion intake are mounted behind the propeller, drawing airflow from the stern propeller to form an air cushion that supports part of the hull's weight, thereby reducing drag and enabling the vessel to navigate in swamps, mudflats, and ice floes. However, these methods have limited effectiveness and are costly. In recent years, liquid lubrication drag reduction technology has gained increasing attention. It significantly reduces frictional resistance between the hull and water by forming a liquid lubricating film on the hull. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a pumping system for a liquid lubrication drag-reducing ship with a reasonable structure. By increasing the pumping system and optimizing the liquid distribution method, the uniformity and stability of the liquid lubrication layer are improved, and the adhesion resistance between the ship bottom and the soil is significantly reduced during the ship's start-up process.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A pumping system for a liquid lubrication drag-reducing vessel includes a vessel body. Two sets of nozzles with an arc-shaped structure are arranged on the bottom of the vessel body, and the nozzle outlets correspond to the surface of the bottom of the vessel body. A liquid storage tank is fixedly placed at the bow of the vessel body, and a water pump is fixedly installed in the engine room inside the vessel body. The outlet of the liquid storage tank is connected to the water pump through a main pipeline, and the outlet of the water pump is connected to the nozzles through multiple branch pipelines.

[0007] As a further improvement to the above technical solution:

[0008] Each branch line is equipped with a check valve and a flow sensor.

[0009] The shape of the liquid storage tank is conformal to the bow of the ship.

[0010] The liquid storage tank is filled with water or drag-reducing liquid.

[0011] The liquid storage tank is made of corrosion-resistant materials.

[0012] The water pump is a high-efficiency centrifugal pump.

[0013] The water pump has a flow rate of 100-500 liters per minute.

[0014] The orifice diameter of each nozzle is 2-5 mm.

[0015] There are clearance holes on the bottom of the boat for installing nozzles.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention features a compact and rational structure, and is easy to operate. By optimizing the pump structure and liquid distribution method, it significantly improves the uniformity and stability of the liquid lubrication layer. The system includes a liquid storage tank, a water pump, liquid delivery pipelines, and distribution nozzles, and can automatically adjust the liquid flow rate according to the ship's speed, thereby effectively reducing water resistance during ship navigation.

[0018] This invention relates to a pumping system for a liquid-lubricated drag-reducing vessel, which reduces adhesion resistance during ship startup by injecting a liquid lubricating layer into the hull. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention.

[0020] Figure 2 This is a bottom view of the present invention.

[0021] Figure 3 This is a bottom view of the present invention (the bottom of the boat is omitted).

[0022] Figure 4 This is a perspective view of the present invention (the bottom of the ship is omitted, and the pipeline is shown).

[0023] The components include: 1. Ship body; 2. Bottom of the ship; 3. Nozzle; 4. Liquid storage tank; 5. Main pipeline; 6. Branch pipeline; 7. Water pump. Detailed Implementation

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0025] like Figures 1-4As shown, the pumping system of the liquid lubrication drag reduction ship in this embodiment includes a ship body 1. The bottom 2 of the ship body 1 is provided with two sets of nozzles 3 arranged in an arc shape (in this embodiment, each set has three nozzles, and the two sets are spaced apart). The spray outlet of the nozzle 3 corresponds to the surface of the bottom 2. A liquid storage tank 4 is fixedly placed at the bow of the ship body 1. At the same time, a water pump 7 is fixedly installed in the engine room inside the ship body 1. The output port of the liquid storage tank 4 is connected to the water pump 7 through a main pipeline 5. The output port of the water pump 7 is connected to the nozzles 3 through multiple branch pipelines 6.

[0026] Each branch pipe 6 is equipped with a check valve and a flow sensor.

[0027] The shape of the liquid storage tank 4 is conformal to the bow of the ship body 1.

[0028] The liquid storage chamber 4 is filled with water or drag-reducing liquid.

[0029] Liquid storage tank 4 is made of corrosion-resistant materials.

[0030] Pump 7 is a high-efficiency centrifugal pump.

[0031] The flow rate of water pump 7 is 100-500 liters / minute.

[0032] The orifice diameter of each nozzle 3 is 2-5 mm.

[0033] The bottom 2 of the boat has a clearance hole for installing the nozzle 3.

[0034] The specific structure and function of the pumping system of the liquid lubrication drag reduction ship described in this utility model are as follows:

[0035] It mainly includes the ship body 1, the bottom 2, the nozzle 3, the liquid storage tank 4, the main pipeline 5, the branch pipeline 6, and the water pump 7.

[0036] The liquid storage tank 4 is made of corrosion-resistant materials, and its capacity is designed according to the ship's size and navigation requirements.

[0037] The water pump 7 is installed in the ship's engine room and is connected to the liquid storage tank 4 and multiple nozzles 3 via pipes. The flow rate of the water pump 7 is 100-500 liters per minute.

[0038] Among them, the nozzles 3 are evenly distributed on the bottom of the hull, and the orifice diameter of each nozzle 3 is 2-5 mm, ensuring that the liquid lubricating layer covers the entire bottom of the hull 2.

[0039] It also includes a control system, with flow sensors and check valves installed on branch line 6, which can monitor the liquid flow in real time and automatically adjust the liquid output according to the sensor data to ensure uniform lubrication layer thickness.

[0040] In actual work process:

[0041] First, fill the liquid storage tank 4 located at the bow of the ship with water or special drag-reducing liquid. Then, start the water pump 7, which is installed in the ship's engine room and connected to the liquid storage tank 4 and the nozzle 3 through pipes. There are two sets of nozzles 3, which are three nozzles forming an arc-shaped structure. The liquid flow rate is automatically adjusted according to the adhesion resistance between the ship bottom and the soil. The liquid is sprayed out from the nozzle 3 through pipes. The nozzle 3 is installed at the bottom of the ship and adopts a multi-hole design to ensure that the lubricating liquid is evenly distributed on the surface of the ship bottom.

[0042] This invention can monitor liquid flow in real time using a flow sensor, and automatically adjust the liquid output according to the sensor data to ensure uniform lubrication layer thickness.

[0043] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A pump water system for a liquid lubrication drag-reduced ship comprising a ship body (1), characterized in that: The bottom (2) of the ship body (1) is provided with two sets of nozzles (3) arranged in an arc shape, and the spray outlet of the nozzle (3) corresponds to the surface of the bottom (2). A liquid storage tank (4) is fixedly placed at the bow of the ship body (1), and a water pump (7) is fixedly installed in the engine room inside the ship body (1). The output port of the liquid storage tank (4) is connected to the water pump (7) through the main pipeline (5), and the output port of the water pump (7) is connected to the nozzle (3) through multiple branch pipelines (6).

2. A pump water system for a liquid lubricated drag-reduced ship as claimed in claim 1, characterized in that: Each branch pipe (6) is equipped with a check valve and a flow sensor.

3. A pump water system for a liquid lubricated drag-reduced ship as claimed in claim 1, characterized in that: The shape of the liquid storage tank (4) is conformal to the bow of the ship body (1).

4. The pump water system for a liquid lubricated, drag-reduced ship of claim 1 wherein: The liquid storage tank (4) is filled with water or drag-reducing liquid.

5. The pumping system for a liquid-lubricated drag-reducing ship as described in claim 1, characterized in that: The liquid storage tank (4) is made of corrosion-resistant material.

6. The pumping system for a liquid-lubricated drag-reducing ship as described in claim 1, characterized in that: The water pump (7) is a high-efficiency centrifugal pump.

7. A pump water system for a liquid lubricated drag-reduced ship as claimed in claim 1, characterized in that: The flow rate of the water pump (7) is 100-500 liters / minute.

8. A pump water system for a liquid lubricated drag-reduced ship as claimed in claim 1, characterized in that: The orifice diameter of each nozzle (3) is 2-5 mm.

9. The pump water system for a liquid lubricated drag-reduced ship of claim 1 wherein: The bottom (2) of the boat has a clearance hole for installing a nozzle (3).

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