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Title:
DELIVERY PRESSURE DETECTION SYSTEM FOR LONG DISTANCE SLURRY PIPELINE AND DETECTION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/108380
Kind Code:
A1
Abstract:
A delivery pressure detection system for a long distance slurry pipeline and a detection method thereof, wherein the detection system includes a detection ring pipe (2), a micro-differential pressure transmitter (4) and a mercury U-tube differential pressure gauge (3), the detection ring pipe (2) and a main pipe (1) are exactly the same and are arranged in parallel, the micro-differential pressure transmitter (4)and the mercury U-tube differential pressure gauge (3) are arranged at two ends of the detection ring pipe (2), a main pipe valve (7) is arranged in the main pipe (1), a ring pipe inlet valve (5) is arranged at the inlet end of the detection ring pipe (2) and a ring pipe outlet valve (6) is arranged at the outlet end thereof. The detection method includes the following steps: the main pipe valve (7) is closed, the ring pipe inlet valve (5) and the ring pipe outlet valve (6) are opened when the slurry is transported, so that the slurry can pass through the detection ring pipe (2) before entering into a main pump (9); the micro-differential pressure transmitter (4) detects the pressure difference of two ends of the detection ring pipe (2) and sends the detected differential pressure value to a programmable logic controller; a pipeline operation expert system obtains the differential pressure value from the programmable logic controller, and calculates the on-way resistance per unit length under current flow velocity and concentration by combining with the actual length of the detection ring pipe (2).

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Inventors:
AN JIAN (CN)
PU GUANGYUE (CN)
HUANG CHAOBING (CN)
PAN CHUNLEI (CN)
Application Number:
PCT/CN2010/000092
Publication Date:
September 30, 2010
Filing Date:
January 21, 2010
Export Citation:
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Assignee:
YUNNAN DAHONGSHAN PIPELINE LTD (CN)
AN JIAN (CN)
International Classes:
G01L13/00; G01L7/00; G01L9/00; G01L15/00
Foreign References:
CN101532897A2009-09-16
CN201397213Y2010-02-03
CN1143185A1997-02-19
CN2280898Y1998-05-06
CN85100356A1986-08-13
JPH11118638A1999-04-30
US5454912A1995-10-03
Attorney, Agent or Firm:
BEIJING MAYSKY PATENT & TRADEMARK AGENT LTD. (3 Floor First Building Maihao Times,47 North Grand Street,Xizhimen Gate, Haidian District, Beijing 4, CN)
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