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Design of Vacuum Sewage Control System and Study on Pipeline Water Blocking Prevention Technology

Author: FengBin
Tutor: ZhouJingXuan
School: Huazhong University of Science and Technology
Course: Environmental Engineering
Keywords: Vacuum Sewerage System Vacuum station control User terminal control Infrared automatic flush Programmable controller Pipeline attempts to prevent
CLC: TU824.2
Type: Master's thesis
Year: 2011
Downloads: 8
Quote: 0
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Abstract


Huazhong University of Science and Technology of vacuum sewerage technology team developed vacuum sewage systems as well as the East Lake vacuum toilet Projects , discusses the vacuum sewage system works , control principle and control requirements , and vacuum station and terminal control circuit optimization and improvement ; may appear in the original relay control circuit , the vacuum sewage control system more stable and easy maintenance ; process of long-range transport of the vacuum system through the introduction of the mature industrial applications programmable control unit (PLC) to change water plug problem analysis and preliminary design of a pipeline aiming to halt the system . The vacuum sewage circuit design of the control system of the main control circuit control circuit and the user terminal includes two parts , vacuum station , where the user terminal control circuit is divided into two control modes for outdoor and indoor . Streamline and optimize the original vacuum station control circuit of summarize the experience accumulated in the process of the Donghu vacuum toilet system , to make it more stable and intelligent . Outdoor vacuum sewage system terminal control design, and draw the circuit schematic , indoor subscriber terminals automated control , infrared sensor automatic flush , and through experiments confirmed its feasibility . Discussed PLC control PLC Omron CPM2A-30CDR Model optimized vacuum station control circuit has been redesigned , and a detailed account of the external wiring and internal programming . Three the indoor terminal centralized control , according to its characteristics , the choice of Siemens CPU 222 ( DC / DC / DC ) into the six types of PLC programming system design , when the increase in the number of terminals , only a corresponding increase in the PLC control the number of units . Vacuum sewage system during long-distance transport process , prone to enhance the bent portion of the segment the pipeline laying length longer , the water plug , causing the system to plug in order to solve this problem , a preliminary study Evacuated Tube attempts to prevent system, the system structure , control principle and control methods are discussed and design .

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Housing health technology and equipment > Sanitary equipment > Bathroom and its equipment
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