Control Method of Water Circulation Cooling System of Shield Machine
A technology of water circulation cooling and control method, which is applied in the direction of earth drilling, mining equipment, tunnels, etc. It can solve the problems of construction site shutdown, water waste, and shield machine stop running, so as to alleviate the contradiction of rapid temperature rise and ensure normal operation. The effect of ensuring continuity
Active Publication Date: 2016-08-17
SHANGHAI FOUND ENG GRP
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[0003] The cooling system of the Herrenknecht shield machine is divided into two parts, the inner circulation and the outer circulation. The outer circulation part is designed and manufactured by the user. The user is required to provide the outer circulation cooling water with a water pressure of 16 bar and a flow rate of 90 cubic meters per hour. 24 Hours of uninterrupted water supply has high requirements for water supply at the construction site. Once the water supply flow and pressure at the construction site cannot meet the requirements, it will directly cause the shield machine to stop running and the construction site to shut down
At the same time, uninterrupted supply of cooling water required by the above, a large amount of external circulation hot water can not be reused, directly resulting in waste of water
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] The water circulation cooling system of the shield machine is mainly composed of water tanks, pumps, pipelines, flow sensors, pressure sensors, temperature sensors, water level sensors, high-pressure gas, valves, atomizing nozzles, etc.
[0018] Using Siemens S7-200PLC to form a PPI network, combined with HMI man-machine interface to implement remote control, the entire control system and control method are stable, the data transmission rate is fast, and the degree of automation is high. Adhering to the concept of one-key control, the shield machine is reduced Operator difficulty.
[0019] Such as figure 1 Shown is the manual operation flowchart of the present invention. In the manual mode, the corresponding command is issued on the man-machine interface or the local control cabinet, and the corresponding actuator works, which is suitable for e...
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The invention relates to a control method for the water circulation cooling system of a shield machine. The water cooling circulation system is set up in a small space in the shield machine; before the circulation pump command is started, the circulation valve or the drain valve is opened; during normal use, the water cooling system is turned on. The high-pressure air valve in the cooling circulation system, the compressed air sprays atomized gas through the atomizing nozzle at the bottom of the water tank to quickly cool down the water temperature; during normal use, the air cooling system is activated in automatic or manual mode, and the air atomizing nozzle is used to cool the water tank The atomized gas is sprayed inside to directly cool the circulating water in the cooling water tank. The invention uses a water cooling circulation system to achieve the purpose of uninterrupted cooling during the operation of the shield tunneling equipment; uses air atomization nozzles to cool the circulating water in real time. Alleviate the contradiction of the rapid temperature rise of cooling water to achieve the purpose of saving water; realize real-time cooling of the shield machine under the condition of short-term water interruption of the project to ensure the normal operation of the shield machine.
Description
technical field [0001] The invention relates to a control system and a control method of underground non-excavation excavation equipment. Background technique [0002] The compound shield machine produced by Herrenknecht Germany is one of the most advanced shield machines in the world. During on-site construction, the shield machine has the characteristics of fast tunneling speed, high construction efficiency and good construction quality. It is widely used in the construction of subways in cities all over the world. [0003] The Herrenknecht shield machine cooling system is divided into two parts, the inner circulation and the outer circulation. The outer circulation part is designed and manufactured by the user. The user is required to provide the outer circulation cooling water with a water pressure of 16 bar and a flow rate of 90 cubic meters per hour. It requires 24 Hours of uninterrupted water supply has high requirements for water supply at the construction site. Onc...
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IPC IPC(8): E21D9/06
Inventor 陆凯忠吴云峰顾刚潘志诚龚金弟
Owner SHANGHAI FOUND ENG GRP