JPS6061622U

JPS6061622U - ultrasonic flow meter

Info

Publication number: JPS6061622U
Application number: JP15394283U
Authority: JP
Inventors: 幹彦松田; 豪山本
Original assignee: 富士電機株式会社
Priority date: 1983-10-04
Filing date: 1983-10-04
Publication date: 1985-04-30
Also published as: DE3436232A1

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の超音波流量計の概略構成図、第、２図は
第１図における超音波素子の縦断側面図、第３図は第２
図におけるＸ−Ｘ断面図、第４図は第３図における超音
波伝搬経路説明図、第５図は本考案による超音波流量計
の一実施例の概略構成図、第６図は第５図における超音
波素子の一実施例の縦断側面図、第７図は第６図におけ
るくさびの斜視図、第８図は第７図のＦ矢視図、第９図
は第６因の超音波素子を管路に取り付けた時の横断面図
、第１０図は第９図における超音波伝搬経路説明図、第
１１図および第１２図はそれぞれ第９図における（さび
と振動子との寸法関係を説明する説明図である。１．２・・・振動子、３，４，２３．２４・・・超音波
素子、５・・・流体、６・・・管路、６ａ・・・管路外
面、？、　　８．　２７．２８−・べさび、２７ａ、２
７ｂ・・・それぞれくさび２７の斜面、底面、３０・・
・角柱、３１．３２・・・角柱の端面、３１ａ、３２ａ
・・・逆台形部分−３１ｂ、３２ｂ・・・方形部分、３
３．３５・・・逆台形の底辺、１００，２００・・・超
音波流量計、Ｇ・・・超音波伝搬経路。−゛／／／　　　　　　’ ０　　８　４リ　　　、　！　取）　　！　ゼ・　。第１０図１Ｘ＼い１＼Ｙ第１２図　　　　　　　　７゜Figure 1 is a schematic configuration diagram of a conventional ultrasonic flowmeter, Figures 2 and 2 are longitudinal sectional side views of the ultrasonic element in Figure 1, and Figure 3 is a cross-sectional side view of the ultrasonic element in Figure 1.
XX sectional view in the figure, FIG. 4 is an explanatory diagram of the ultrasonic propagation path in FIG. 3, FIG. 5 is a schematic configuration diagram of an embodiment of the ultrasonic flowmeter according to the present invention, and FIG. 7 is a perspective view of the wedge in FIG. 6, FIG. 8 is a view taken in the direction of arrow F in FIG. 7, and FIG. 9 is a side view of the ultrasonic element of the sixth factor. Fig. 10 is an explanatory diagram of the ultrasonic propagation path in Fig. 9, and Figs. 11 and 12 are illustrations of the dimensional relationship between the rust and the transducer in Fig. It is an explanatory diagram for explaining. 1.2... Vibrator, 3, 4, 23. 24... Ultrasonic element, 5... Fluid, 6... Pipeline, 6a... Pipeline outer surface ,?, 8. 27.28-・Besabi, 27a, 2
7b...Slope, bottom of wedge 27, 30...
・Prismatic, 31.32...End face of the prism, 31a, 32a
... Inverted trapezoidal part - 31b, 32b... Square part, 3
3.35... Base of inverted trapezoid, 100,200... Ultrasonic flow meter, G... Ultrasonic propagation path. −゛///' 0 8 4 ri, ! Tori)! Ze・. Figure 10 1 X\I1 \Y Figure 12 7゜

Claims

[Scope of utility model registration request]

Two ultrasonic elements each having a disc-shaped vibrator made of a piezoelectric material and a wedge as an ultrasonic transmission medium are arranged so that the ultrasonic propagation path between the two ultrasonic elements crosses the fluid flowing through the conduit. , in an ultrasonic flowmeter that is fixed to the outer surfaces of the upstream side and the downstream side of the pipe line and measures the flow rate of the fluid from the propagation time of the ultrasonic wave in the ultrasonic propagation path, the wedge has a cross section. is an inverted trapezoid whose base is approximately equal to the diameter of the vibrator, or the upper side of one end surface and the lower edge of the other end surface of a hexagonal prism formed by connecting rectangles on an inverted trapezoid formed equivalent to the inverted trapezoid. and the bottom surface of the wedge, which has the vibrator fixed to the slope, is brought into contact with the conduit. An ultrasonic flow meter featuring: