Flow measuring device for sewer line

Abstract

The invention discloses a flow measuring device for a sewer line. The flow rate measuring device for the sewer line is characterized by comprising a first main body part (1a) which is used as a part inserted into the interior of the sewer line (C) and comprises a plurality of groups of fluid guide parts (10) and a pair of ultrasonic transducers (14), the present invention is provided with a plurality of sets of fluid guides (10) which are formed so as to face each other at a fixed interval from the lowest water depth near the bottom surface of a sewer line (C) to less than the highest water depth, and which are formed so as to protrude along the inner circumferential surface side by side in the flow velocity direction, and a pair of ultrasonic transducers (14) which are embedded in the protruding side surface ends of the fluid guides (10) and are designed by the V-method. A fluid guide part (10) formed so that the ultrasonic waves emitted from one of the ultrasonic transducers are reflected by the facing fluid guide part (10) and reach the other ultrasonic transducer, and formed so that the interval increases from a low water depth to a high water depth; a second main body part (1b) which is a part extending from the first main body part (1a) inserted into a sewer line (C) to the manhole side and exposed to the outside of the sewer line (C), comprises an open part (16) formed by cutting in a manner of forming a preset angle from the upper end, and is formed by extending a fluid guide part (10) formed on the first main body part (1a); and a water level measurement sensor part (18) which is fixed in a manhole on the outer side of the sewer line (C), emits ultrasonic waves to the open part (16) of the second main body part (1b), receives the ultrasonic waves reflected from the water surface, and measures the water level.

Description

technical field [0001] The present invention relates to a flow measurement device, in particular, to a flow measurement device suitable for a non-bend type small sewer pipe which normally maintains a non-bend state. Background technique [0002] In the Korean Registered Patent No. 10-1833543 published on March 2, 2018, a low-carbon non-bend-type sewage flow measurement device is disclosed. In the above-mentioned registered patent, a plurality of sets of fluid guides are provided, and the plurality of sets of fluid guides are formed so as to face each other at a constant interval from the lowest water depth of the bottom surface of the sewer pipe to less than the highest water depth, and are arranged side by side in the direction of the flow velocity. The inner peripheral surface is formed to protrude, so that the actual flow rate can be accurately and accurately measured for the sewer canals that flow only a very small flow rate during the dry season when the amount of preci...

AI Technical Summary

Problems solved by technology

[0003] However, the non-elbow type sewer flow measuring device as described above has the following problem: it cannot be applied to small sewer pipes where it is difficult to bury water level measuring sensors together due to space constraints.

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