Full-symmetry double-cone flowmeter

A flowmeter, fully symmetrical technology, applied in the field of fully symmetrical double-cone flowmeter, can solve the problem that the cantilever structure of V-cone flowmeter is not stable enough, it is impossible to obtain stable pressure, and affect the measurement results, etc., to achieve good sensitivity and Stability, simple structure, good measurement repeatability

Inactive Publication Date: 2013-02-13
ZHEJIANG MEASUREMENT SCI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is impossible to obtain a stable pressure in such a wake area
In addition, the cantilever structure of the V-cone flowmeter is not stable enough, which may cause vibration and directly affect the measurement results

Method used

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  • Full-symmetry double-cone flowmeter

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Embodiment Construction

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like figure 1 , figure 2 , image 3 , Figure 4 As shown, the present invention includes a measuring straight pipe 2 and a biconical body 3; the measuring straight pipe 2 has an upstream pressure taking port 6, a throat pressure taking port 7 and a downstream pressure taking port 8 on the same axial section of the measuring straight pipe 2, and the upstream pressure taking port 8 is opened in turn. The position of the port 6 and the downstream pressure taking port 8 is symmetrical with respect to the throat pressure taking port 7; the biconical body 3 is composed of cones at both ends and a cylinder in the middle, and the cylinder in the middle is equipped with three supports of the same thickness at equal distances in the circumferential direction. Column piece 4, the three support column pieces 4 are the same length as the cylinder in the mid...

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Abstract

The invention discloses a full-symmetry double-cone flowmeter. The full-symmetry double-cone flowmeter comprises a straight measurement pipe and a double-cone body, wherein an upstream pressure-taking port, a throat pressure-taking port and a downstream pressure-taking port are sequentially formed in the same axial section of the straight measurement pipe; the double-cone body consists of cone bodies at two ends and a middle cylinder body; three support column plates with the same thickness are arranged on the middle cylinder body at equal intervals along the circumference direction, and the length of each support column plate is equal to that of the middle cylinder; the double-cone body is coaxially arranged in the straight measurement pipe; the throat pressure-taking port is positioned between the two support column plates of the double-cone body and also positioned in the middle of the length of the double-cone body; and the cylinder part of the double-cone body is closely matched with the straight measurement pipe. The full-symmetry double-cone flowmeter can acquire a stable discharge coefficient under high Reynolds number, and has the characteristics of causing small pressure loss, being good in repeatability, requiring a short straight pipe section and the like. Double-differential pressure signals obtained by the three pressure-taking ports also can be applied to two-phase flow parameter measurement.

Description

technical field [0001] The invention relates to a flow measuring device, in particular to a fully symmetrical double cone flowmeter. Background technique [0002] Differential pressure flowmeter is the most commonly used flow meter for measuring gas, liquid and steam flow in industrial production. According to survey statistics, in the entire industrial flow measurement field, differential pressure flow meters account for more than half of the total number of flow meters. Differential pressure flowmeters usually include throttling differential pressure flowmeters, pitot tubes, uniform velocity tube flowmeters, elbow flowmeters, etc. However, in the application, many insurmountable shortcomings of traditional differential pressure flowmeters are gradually found, such as: unstable outflow coefficient, large pressure loss, small turndown ratio, and high on-site installation conditions. [0003] In the 1980s, the American MC-CROMETER company developed a new type of throttling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/36G01F1/40
Inventor 黄震威朱文君梁佳娜谢代梁
Owner ZHEJIANG MEASUREMENT SCI RES INST
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