Heating system for man cabin of shield machine and control method thereof

Abstract

A heating system for a man cabin of a shield machine comprises the man cabin, a first temperature sensor, a pressure sensor and an internal circulating heat dissipation water path, wherein the first temperature sensor and the pressure sensor are arranged in the man cabin. At least one water-passing pipeline is arranged in the man cabin, a heat dissipation device and a first manual ball valve are connected to each water-passing pipeline, the two ends of the water-passing pipelines are externally connected with a first heating water path and a second heating water path correspondingly, and the first heating water path communicates with the internal circulating heat dissipation water path mutually. Control ball valves and a one-way valve are additionally arranged on the first heating water path, and the second heating water path is externally connected with a water heating system. The heating system further comprises a control device. The control device receives temperature signals transmitted by the first temperature sensor and a second temperature, compares the temperature signals and then sends out control instructions to the control ball valves and the water heating system for achieving opening / closing of the control ball valves and starting / stopping of the water heating system, and thus communicating of the water passing pipelines and the first heating water path or the second heating water path is achieved finally.

Description

technical field [0001] The invention relates to a shield machine, in particular to an improvement and a control method for the heating system of the shield machine's cabin. Background technique [0002] Once the cutter head of the shield machine breaks down and needs to be repaired or replaced during the excavation process, the staff needs to enter the soil cabin through the man cabin of the shield machine for pressurized operation. Operation, when the staff wants to come out of the high-pressure cabin, they need to deflate and depressurize before they can leave the cabin, and in the process of deflation and depressurization, the temperature in the cabin will drop rapidly (normally, the temperature will drop by one atmosphere) 5°C). Experiments have proved that the human body will cause decompression sickness when the pressure of the surrounding environment drops rapidly, and it is more likely to cause decompression sickness in a low-temperature environment. Therefore, he...

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Problems solved by technology

[0003] The heating device of the man cabin of the conventional shield machine is generally to install a 220V electric heater (such as an oil heating device) in the man cabin. The air in the cabin is likely to be rich in combustible gas, and the cabin is under high pressure. Once the 220V electric heater generates sparks due to vibration or external force collision or electrical failure during the excavation process, it will easily lead to explosion accidents of combustible gas in the cabin, endangering The life safety of the crew members in the human cabin

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