A blocking control method based on low-frequency electromagnetic signal communication and intelligent positioning of blocking balls

Abstract

The invention provides a plugging control technology based on low-frequency electromagnetic signal communication and intelligent plugging ball positioning. The plugging control technology comprises afilter screen, a slurry pump, a pressure measuring device, an in-pipe wireless communication device, an out-pipe wireless communication device, an out-pipe plugging control system, a corrugated pipe,a battery, an in-pipe plugging control system and a pilot-operated electromagnetic release valve. The invention provides the plugging control technology based on low-frequency electromagnetic signal communication and plugging ball intelligent positioning. An efficient and accurate plugging process is carried out through accurate positioning of a plugging ball and timely pressurization and decompression of the plugging ball. A control system in the plugging control technology can efficiently and accurately control actions of all devices, finally all the devices can work in an optimal action fitmode, enough deflection can be provided for the plugging ball when the plugging ball passes through a three-way reversing valve through the structure of the corrugated pipe, and meanwhile the plugging position of the plugging ball can be mainly concentrated on two sides of the plugging ball in the plugging process.

Description

technical field [0001] The invention belongs to the technical field of nozzle extension of muddy water shield machines, and in particular relates to a plugging control method based on low-frequency electromagnetic signal communication and intelligent positioning of plugging balls. Background technique [0002] In recent years, the rapid development of my country's transportation facilities, among which the development of the subway is the fastest, the demand for the shield machine used to build the subway is very huge. The shield machine is mainly divided into mud-water shield machine and earth pressure balance shield machine. Among them, the mud-water shield machine is widely used in subway construction due to its clean and environmentally friendly advantages. The mud-water shield machine has been continuously improved to solve the problem of The pollution problem of the construction environment, but the research on high-efficiency operation and prolonging the life is not d...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a plugging control method based on low-frequency electromagnetic signal communication and intelligent positioning of the plugging ball, so as to solve the problem that the general shield machine does not accurately locate the plugging position, resulting in reduced service life and leakage etc.

Images