Gate valve micro-channel leakage prevention and control device and prevention and control method based on grid Boltzmann

By combining lattice Boltzmann analysis with shape memory alloys (SMA) and piezoelectric ceramics, leakage in the microchannels of gate valves can be monitored and compensated in real time, solving the problem of flow loss caused by wear in gate valves and improving the accuracy and response speed of leakage prevention control.

CN121701690APending Publication Date: 2026-03-20YANCHENG INST OF TECH
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Patent Information

Application Number
CN202511503340.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-21
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Existing technologies lack accurate calculations and high-precision leak prevention control measures for flow loss caused by wear of rough elements in the sealing micro-gap of gate valves due to repeated opening and closing.

Method used

A microchannel model was established using the lattice Boltzmann analysis method. By combining shape memory alloy (SMA) and piezoelectric ceramics, the detection and repair of potential leakage areas were achieved through real-time monitoring and closed-loop compensation control.

Benefits of technology

It enables real-time monitoring and closed-loop compensation of leakage within the microchannel of the gate valve, improving the leakage prevention control accuracy and response speed of the gate valve, and extending the service life of the sealing structure.

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Abstract

The invention discloses a gate valve micro-channel leakage prevention and control device and a prevention and control method based on lattice Boltzmann. The gate valve micro-channel leakage prevention and control device comprises a plurality of sealing blocks and heat insulation blocks which are evenly distributed in a staggered mode in the circumferential direction of one inner side wall face of a micro-channel. Each sealing block comprises a piezoelectric ceramic block, an SMA, a temperature sensor and a heating assembly; the bottom surface of the piezoelectric ceramic block is arranged on the inner side wall surface of the micro-channel; the SMA is arranged on the top surface of the piezoelectric ceramic block; the temperature sensor is used for monitoring the temperature of the SMA in real time; the heating assembly can heat the SMA. The SMA and piezoelectric ceramic combined structure is adopted, a wear area is identified through piezoelectric signals, the SMA is heated through a PID temperature control strategy to trigger the shape memory effect, compensation displacement is generated to recover the sealing state in real time, wear monitoring and closed-loop compensation are achieved, and therefore self-repairing after leakage is caused by surface wear of the microgap of the gate valve sealing ring can be achieved, and the service life of the gate valve sealing ring is prolonged. The anti-leakage gate valve sealing structure has the advantages of being good in anti-leakage effect, high in control precision, high in response speed and the like.
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