US 12,085,480 B2
Shallow-buried leakage-proof pipeline and method for operating same
Hua Nan, Jiaozuo (CN); Jifeng Yuan, Jiaozuo (CN); Shousong Guo, Jiaozuo (CN); Wenlong Shen, Jiaozuo (CN); and Faqiang Su, Jiaozuo (CN)
Assigned to HENAN POLYTECHNIC UNIVERSITY, Jiaozuo (CN)
Filed by HENAN POLYTECHNIC UNIVERSITY, Jiaozuo (CN)
Filed on May 11, 2022, as Appl. No. 17/741,922.
Application 17/741,922 is a continuation of application No. PCT/CN2020/120208, filed on Oct. 10, 2020.
Claims priority of application No. 201911199273.2 (CN), filed on Nov. 29, 2019.
Prior Publication US 2022/0268659 A1, Aug. 25, 2022
Int. Cl. G01M 3/18 (2006.01); F17D 5/06 (2006.01)
CPC G01M 3/18 (2013.01) [F17D 5/06 (2013.01)] 1 Claim
OG exemplary drawing
 
1. An underground leakage-proof pipeline, comprising:
a programmable logic controller (PLC);
an outer pipe;
an inner pipe;
a first water-pressure sensor;
a second water-pressure sensor;
an electromagnetic valve; and
a movable water leakage detection device;
wherein the PLC is arranged on ground; the outer pipe and the inner pipe are both shallowly buried under the ground along a horizontal direction, and the inner pipe is coaxially arranged in the outer pipe; the first water-pressure sensor and the electromagnetic valve are both arranged at a water inlet of the inner pipe, and the second water-pressure sensor is arranged at a water outlet of the inner pipe; the movable water leakage detection device is arranged at a bottom of the outer pipe; the PLC is connected to the first water-pressure sensor, the second water-pressure sensor and the electromagnetic valve respectively through a signal line; and the PLC is connected to the movable water leakage detection device through a control line stored in the outer pipe;
wherein the movable water leakage detection device comprises a conduit, a housing, a micro humidity sensor and a micro-motor; the conduit is parallel to the outer pipe, and is arranged at the bottom of the outer pipe; a top of the conduit is communicated with the bottom of the outer pipe; the housing is arranged in the conduit, and the micro humidity sensor and the micro-motor are both arranged in the housing; the micro humidity sensor is arranged on the micro-motor; a main shaft of the micro-motor is connected to a roller via a gear transmission mechanism, and the roller is configured to roll along the conduit; and the micro humidity sensor and the micro-motor are respectively connected to the PLC through the control line.