Structure of flow measurement sensor based on time-of-flight and method for installation thereof
AssigneeGuangzhou Photime Instrument Co., Ltd.
InventorFenghua Liu
Life of this patent
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Abstract
Disclosed are a structure of a flow measurement sensor based on time-of-flight and a method for installation thereof, the structure comprises at least one pair of a first flow measurement sensor and a second flow measurement sensor vertically installed on a pipeline wall, wherein the first flow measurement sensor and the second flow measurement sensor are both provided at a bottom with a beam end capable of emitting and receiving beams, wherein a beam straight line formed between a first beam end and a second beam end does not intersect with an axis of the pipeline, and forms, with the axis of the pipeline, an included angle less than 90°.
Claims19
A structure of a flow measurement sensor based on time-of-flight, comprising:
- at least one pair of a first flow measurement sensor and a second flow measurement sensor vertically installed on a pipeline wall, wherein the first flow measurement sensor is provided at a bottom with a first beam end capable of emitting and receiving beams, and the second flow measurement sensor is provided at a bottom with a second beam end capable of emitting and receiving beams, wherein a beam straight line is formed between the first beam end and the second beam end, which does not intersect with an axis of the pipeline and forms, with the axis of the pipeline, an included angle less than 90°.
A method for installing a flow measurement sensor based on time-of-flight, comprising the following steps:
- vertically installing a first and a second flow measurement sensors of a flow measurement sensor pair on a pipeline wall in such a way that a beam straight line does not intersect with an axis of the pipeline and forms, with the axis of the pipeline, an included angle less than 90°;
- wherein the step of vertically installing the second flow measurement sensor on the pipeline wall comprises the following steps:
- calculating, according to a set second included angle, a fourth included angle on the cross section of the pipeline which is formed by an installation axis of the second flow measurement sensor and the first flow measurement sensor, wherein a formula for calculating the fourth included angle θ is θ=180°−2*β, wherein the second included angle β is an included angle between an installation axis of the first flow measurement sensor or the installation axis of the second flow measurement sensor and a projection of the beam straight line on the cross section of the pipeline;
- calculating an offset distance of an installation point of the second flow measurement sensor from the first flow measurement sensor along the axis of the pipeline, wherein a formula for calculating the offset distance L is L=ID*cos(β)*sin(β)/tan(γ), wherein the third included angle γ is an included angle between an indicating direction of a first flow direction indicator and a first plane formed by the beam straight line and the installation axis of the first flow measurement sensor, and ID represents a diameter of the pipeline;
- and
- vertically installing the second flow measurement sensor on the pipeline wall according to the calculated fourth included angle and the offset distance.
Dependencies are inferred from the claim text.