A recoilless cavitation cleaning nozzle

Abstract

The invention relates to a recoilless cavitation cleaning nozzle and belongs to the technical field of liquid valve control. The recoilless cavitation cleaning nozzle comprises a reverse injection mechanism, a valve seat, a combined sealing pad, an cavitation injection mechanism and a water inlet joint, wherein the reverse injection mechanism and the cavitation injection mechanism are symmetrically connected to the valve seat of a three-way pipe structure through connecting threads on a counter bored hole seat and a tube body, respectively; the counter bored hole seat and the tube body are sealed together with the valve seat through combined sealing pads; the valve seat is also connected with the water inlet joint and connected with an external water source through the water inlet joint; a horizontal height difference is formed between water outlets, namely a jet nozzle and a nozzle, of the reverse injection mechanism and the cavitation injection mechanism; by means of an interior structure of the cavitation injection mechanism, water flow generates an cavitation effect so as to achieve the purpose of cleaning a target surface; and meanwhile, through the adoption of the reverse injection mechanism, recoil generated by the nozzle during working is eliminated.

Description

technical field [0001] The invention relates to a cavitation cleaning nozzle, in particular to a recoilless cavitation cleaning nozzle, which belongs to the technical field of liquid valve control. Background technique [0002] Marine biofouling refers to the animals, plants and microorganisms that adhere to or inhabit on the solid surface of various artificial facilities underwater or in the water, and have adverse effects on human economic activities. With the development of shipping, coastal defense, aquaculture, and coastal power plants, the damage caused by marine biofouling is becoming more and more serious, and the losses caused are difficult to calculate accurately. According to incomplete statistics, the losses caused by biofouling to various marine engineering facilities and ship equipment in the world can reach more than billions of dollars. Specifically, marine biofouling can cause the following types of hazards: [0003] a) Increase the resistance of the ship:...

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Problems solved by technology

[0004] b) Blockage of pipelines: such as coastal factories, offshore platforms, ships and offshore power stations, etc., biofouling will increase the rough surface of the inner wall of the pipeline, reduce the diameter of the pipeline or even cause complete blockage, and biofouling will also accelerate the speed of electrochemical corrosion

[0005] c) Damage to marine instruments: The adhesion of biofouling can cause failure of instruments and instrument transmission mechanisms in the sea, signal distortion or reduce performance;

[0006] d) Offshore oil platform: The offshore oil platform has been in the sea for a long time. If a large number of marine organisms are attached, it will increase its external load and increase the self-weight of the platform. In case of storms or earthquakes, the platform may tilt or collapse, causing heavy losses.

[0007] From the perspective of the current equipment used for attachments on the solid surface of underwater platforms at home and abroad: brushes and water jets are commonly used, but both have certain limitations. Damage, etc., especially it is difficult for the brush to clean small curved surfaces and local areas with transitional surfaces; although the water jet cleaning method can overcome the problems caused by the brush cleaning method, the generation of water jets requires a relatively high-power water pump and its pump control. system, especially the nozzles that match it and can generate strong flushing force; in addition, because water jet nozzles will generate relatively large recoil when spraying, it will increase the difficulty of operation for the operator

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