Underwater ventilation cavity assisted high-pressure water jet cutting device

Abstract

The invention belongs to the field of underwater cold cutting, and particularly relates to an underwater ventilation cavity assisted high-pressure water jet cutting device. A high-pressure water tank,a high-pressure water pump, an energy accumulator, a pressure regulating valve, a flowmeter, a water pipe connector, a water cutter generator and a ruby nozzle are sequentially connected through a high-pressure water pipe; water in the high-pressure water tank forms a high-speed water jet flow at the ruby nozzle through the high-pressure water pipe; grinding sand is located on a water cutter numerical control guide rail installation frame and is connected with the water pipe connector through a grinding sand conveying pipe and a grinding and mixing pipe sequentially; a high-pressure gas cylinder, a gas pressure regulating valve, a gas flowmeter, a gas pipe, a gas cavity and an air bubble are sequentially connected through a pipeline; gas and the high-speed water jet flow are ejected ontoa workpiece to be cut so as to cut the workpiece; and the air bubble packs the jet flow at the position close to an outlet. According to the underwater ventilation cavity assisted high-pressure waterjet cutting device provided by the invention, the workpiece cannot be locally heated so as to be prevented from being deformed, no molten slags and chemical reaction is generated to cause toxic substances, the cutting accuracy is high, the cutting surfaces are in order, and the equipment performance and the service life are improved.

Description

technical field [0001] The invention belongs to the field of underwater cold cutting, and in particular relates to an underwater ventilation cavitation assisted high-pressure water jet cutting device. Background technique [0002] In recent years, my country's infrastructure technology has developed rapidly. Many bridges across rivers and seas and hydropower dams have been built, and several offshore drilling platforms have been built in the South China Sea to legally exercise maritime rights and interests. However, these operations inevitably require underwater operations. Underwater rock soil or metal cutting and other problems, underwater cutting is not only difficult for personnel to operate, it is not easy to burn in water, there is pressure difference resistance, water is easy to conduct electricity, equipment is easy to corrode, etc. These characteristics make it very easy to cut in the air. Cutting can get complicated underwater. [0003] The commonly used underwater ...

AI Technical Summary

Problems solved by technology

However, cutting under water is affected by water resistance and pressure difference resistance, and the cutting efficiency will be greatly reduced. Compared with cutting in air, cutting in water requires a higher supply pressure, resulting in greater energy consumption, which poses a challenge to the high-pressure pump. Higher requirements also bring instability, so it is urgent and necessary to study how to reduce the resistance of underwater water cutting, which can not only reduce costs and obtain greater benefits, but also improve the stability and service life of equipment

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