Low-resistance column type ultrasonic heat meter pipe section

Abstract

The present invention provides a low-resistance column type ultrasonic heat meter pipe section. The low-resistance column type ultrasonic heat meter pipe section comprises a pipe section body, two reflection columns and reflection surfaces respectively disposed on the reflection columns; the two reflection columns are both disposed in the pipe section body, and the distance from each reflection column to the center of the pipe section body is 12mm; each reflection column comprises a front wall, a rear wall, a left wall and a right wall which are arc-shaped, the left wall and the right wall are of a left-right symmetrical structure, the radian [beta] of each of the left wall and the right wall is 47 DEG, the radius of each of the left wall and the right wall is 0.2mm, the distance H between tangent lines of the left wall and the right wall is 4mm, the radian [gamma] of the front wall is 142.2 DEG, the radius of the front wall is 3.7mm, the radian [pi] of the rear wall is 56.1 DEG, and the radius of the rear wall is 21.25mm; and the two reflection surfaces are oppositely arranged. Pressure loss of the pipeline cannot be increased by arc-shaped arrangement of the reflection columns, and the pipeline obstruction phenomenon caused by impurities in heat exchange medium of a heat supply pipeline system can be reduced.

Description

technical field [0001] The invention relates to a pipe section of an ultrasonic heat meter, in particular to a pipe section of a low-resistance column type ultrasonic heat meter. Background technique [0002] The ultrasonic heat meter is an instrument that measures the flow rate and displays the heat energy released or absorbed by the water flowing through the heat exchange system by means of ultrasonic waves. Ultrasonic heat meters work on the principle of ultrasonic time difference method. The principle of ultrasonic time difference method is to measure the fluid flow by relying on the time difference of ultrasonic signals propagating in the fluid. When the ultrasonic wave propagates in the fluid, the flow of the fluid will cause the ultrasonic signal to propagate. Time difference, the size of the time difference is proportional to the flow velocity of the fluid, so the fluid flow can be measured. For ultrasonic heat meters, the temperature change of the flowmeter can be i...

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Problems solved by technology

[0003] In the existing technology, the sound wave path of the pipe section of the ultrasonic heat meter is a U-shaped reflection line. The propagation of ultrasonic waves in the pipe section depends on the reflection surfaces of the reflection columns on both sides of the pipe section. The reflection surface is located at the central axis of the pipe section. The diameter of the reflection column is generally 9mm, the column-type ultrasonic pipe section structure in the prior art, its reflection column will affect the pressure loss of the heat meter, which will increase the pressure loss of the pipe section, and is not conducive to the removal of impurities in the pipe, which will cause the blockage of the heat meter

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