A rapid buoyancy adjustment system for small and medium-sized underwater unmanned vehicles

Abstract

The invention discloses a buoyancy rapid adjustment system for small and medium-sized underwater unmanned vehicles, including a reserve water tank, a first water pump, a second water pump, a first one-way valve, a second one-way valve, and a first liquid level sensor , the second liquid level sensor, the third liquid level sensor, the fourth liquid level sensor, the third one-way valve, and the fourth one-way valve; the top of the reserve water tank is fixed with a top cover and is provided with a water hole and an inlet joint, and the reserve water tank The bottom is provided with a water collecting groove and provided with an outlet joint. The first liquid level sensor, the second liquid level sensor, the third one-way valve and the fourth one-way valve are all installed on the top cover; the third liquid level sensor and the fourth liquid level sensor are installed at the water collecting groove. The side wall of the reserve water tank is provided with a fixing frame for being fixedly connected with the underwater vehicle. The water flow inlet of the first water pump is connected with the outlet joint at the bottom of the reserve water tank, the water flow outlet of the first water pump is connected with the first one-way valve; the water flow outlet of the second water pump is connected with the second one-way valve, the water injection pipe and the reserve water tank in sequence.

Description

technical field [0001] The invention belongs to the field of new marine unmanned vehicles, and in particular relates to a buoyancy rapid adjustment system for small and medium-sized underwater unmanned vehicles. Background technique [0002] Marine unmanned aerial vehicle refers to an unmanned system navigating in the ocean, and is an important tool for modern ocean observation, resource detection, data transmission and communication. According to the vertical navigation space, it can be divided into two types: surface unmanned vehicles and underwater unmanned vehicles. Surface unmanned vehicles often refer to various types of unmanned ships. Use the buoyancy center below the center of mass and reserve sufficient reserve buoyancy to reduce the roll angle of the hull and prevent lateral capsizing; underwater unmanned vehicles, including AUVs, underwater gliders, etc., are mostly developed and built based on torpedo and submarine technology systems , which adopts a method in ...

AI Technical Summary

Problems solved by technology

[0005] Common methods for buoyancy adjustment of underwater unmanned vehicles include: hydraulic oil discharge method, gas blowing method, dumping method, water drainage method, etc., in which the hydraulic oil discharge method uses a hydraulic pump to change the volume of the water-immersed oil bladder of the aircraft to achieve buoyancy adjustment. The method is often used in deep-sea high-pressure loads, and the buoyancy adjustment volume is small; the gas blowing method releases the high-pressure gas pre-stored in the gas cylinder to empty the closed water tank of the aircraft to achieve buoyancy adjustment. The buoyancy adjustment speed of this method is fast, but The air system is complex and is mostly used for emergency buoyancy adjustment; the dumping method uses the method of discarding heavy objects to reduce the weight of the aircraft to achieve buoyancy adjustment. This method cannot be reused. After use, the aircraft needs to be recovered and the heavy objects are installed again; the drainage method uses sea water The buoyancy adjustment is achieved by pumping the closed water tank of the aircraft. This method has a large volume of buoyancy adjustment, but this method puts forward extremely high requirements on the corrosion resistance and long-term reliability of the seawater pump. mounted on a small underwater vehicle

[0006] In summary, the existing buoyancy adjustment methods for aircraft are oriented to the hundred-meter-level deep-sea pressure load conditions, and cannot meet the requirements of small and medium-sized underwater unmanned vehicles in terms of buoyancy adjustment rate and volume, system simplicity, and quality. location, large volume, and fast buoyancy adjustment working conditions

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