Multi-medium composite jet flow generating device and polar region underwater jet flow ice breaking method

By designing a multi-media composite jet generator, the airflow surrounds the water jet to reduce resistance, and forms a composite jet to break ice, solving the problem that the existing technology is difficult to break ice at a long target distance in a flooded environment, and achieving an efficient ice-breaking effect.

CN119635540AActive Publication Date: 2025-03-18CHONGQING UNIV
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Patent Information

Application Number
CN202411817456.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-18
Estimated Expiration
2044-12-11

AI Technical Summary

Technical Problem

The existing jet generators and methods are difficult to meet the demand for long target ice breaking in a submerged environment, and the ice breaking efficiency is low.

Method used

A multi-media composite jet generator is designed, including an outer nozzle and an inner nozzle, which is used to accelerate the airflow, and an inner nozzle is used to accelerate the mixed liquid flow of water and abrasives. The airflow surrounds the mixed liquid flow to reduce resistance and forms a composite jet to break ice.

Benefits of technology

The target distance and terminal energy of the jet are significantly improved, the jet ice breaking ability in underwater submerged environments is enhanced, the ice breaking efficiency is improved, and the degree of damage to the ice body is aggravated through multi-media complexing.

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Abstract

The invention discloses a multi-medium composite jet flow generating device and a polar region underwater jet flow icebreaking method. The multi-medium composite jet flow generating device comprises an outer spray pipe used for spraying airflow in an accelerated mode and an inner spray pipe used for spraying mixed liquid flow of water and grinding materials in an accelerated mode. And the outer spray pipe is coaxially sleeved on the inner spray pipe, so that the airflow sprayed by the outer spray pipe surrounds the periphery of the mixed liquid flow sprayed by the inner spray pipe. The inner spray pipe generating the mixed liquid jet flow is nested in the outer spray pipe generating the gas jet flow, the gas jet flow generated by the outer spray pipe surrounds the liquid jet flow, seawater is discharged through the gas jet flow, and the resistance of the mixed liquid jet flow can be remarkably reduced, so that the target distance of the mixed liquid jet flow and the tail end energy of the mixed liquid jet flow can be greatly improved; therefore, the jet icebreaking capacity under the underwater submerging environment can be obviously improved. And when the composite jet flow generated by the device acts on the ice body in three media of gas, liquid and solid abrasive particles, the ice breaking effect can be further improved compared with single-medium ice breaking.
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