JPS5876119U

JPS5876119U - ultrasonic flow meter

Info

Publication number: JPS5876119U
Application number: JP17082481U
Authority: JP
Inventors: 一郎和田
Original assignee: 株式会社東芝
Priority date: 1981-11-18
Filing date: 1981-11-18
Publication date: 1983-05-23

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 the drawing]

第１図および第２図は口径３００ｍｍ程度以下のパイプ
用の超音波流量計の従来例を示す要部縦断面図、第３図
および第４図は本考案−実施例の超音波流量計を示すも
ので、第３図は要部縦断面図、第４図は第３図の仕切弁
における横断面図、第５図乃至第１３図は第３図および
第４図に示した超音波流量計をパイプに不断水工事によ
り取付ける手順を示す説明図、第１４図は本考案による
超音波流量計の一変形例を示す要部縦断面図である。１・・・パイプ、１２・・・枝フランジ、１３・・・仕
切弁、１４・・・超音波流量計検出部、１５ａ、１５ｂ
・・・超音波送受波器、１６・・・連結部材、１８・・
・パツキン締付フランジ、１９・・・ナツト、２０・・
・通しボルト、２１．２２・・・位置調整用ナツト、２
３・・・振動絶縁−フランジ、３１・・・オーバーラツ
プ割管、３２・・・気密ハウジング、３３・・・ホール
ソーマシン、４２・・・枝フランジ、４３・・・仕切弁
、４４・・・反射面を磨く工具。Figures 1 and 2 are vertical cross-sectional views of main parts of a conventional example of an ultrasonic flowmeter for pipes with a diameter of approximately 300 mm or less, and Figures 3 and 4 are cross-sectional views of the ultrasonic flowmeter of the present invention-embodiment. Figure 3 is a vertical sectional view of the main part, Figure 4 is a cross sectional view of the gate valve in Figure 3, and Figures 5 to 13 are the ultrasonic flow rates shown in Figures 3 and 4. FIG. 14 is an explanatory view showing the procedure for attaching the meter to a pipe by continuous water cutoff construction, and FIG. 14 is a vertical cross-sectional view of a main part showing a modified example of the ultrasonic flow meter according to the present invention. DESCRIPTION OF SYMBOLS 1... Pipe, 12... Branch flange, 13... Gate valve, 14... Ultrasonic flowmeter detection part, 15a, 15b
... Ultrasonic transducer, 16... Connection member, 18...
・Packskin tightening flange, 19...Nut, 20...
・Through bolt, 21.22...position adjustment nut, 2
3... Vibration isolation flange, 31... Overlap split pipe, 32... Airtight housing, 33... Hole saw machine, 42... Branch flange, 43... Gate valve, 44... Reflection A tool for polishing surfaces.

Claims

[Scope of utility model registration request]

(1) Axis centers are arranged at a predetermined distance apart on the tangent between a plane parallel to the axis of the pipe through which the fluid to be measured flows and the outer circumferential surface of the pipe, and the axis is orthogonal to the tangent to A pair of gate valves connected to a pair of branch flanges protruding from the wall and communicated with each other internally by non-water cutoff construction, and a pair of ultrasonic transducers are spaced apart from each other by the predetermined distance and have their axes parallel to each other. The ultrasonic transducers are oriented in the same direction and attached to the connecting member via vibration isolating means, and the ultrasonic transducers are respectively inserted concentrically into the pair of gate valves and connected to the gate valves via the vibration isolating means. An ultrasonic flowmeter comprising: an ultrasonic flowmeter detection section that is fluid-tightly attached to the ultrasonic flowmeter;

(2) The ultrasonic flowmeter according to claim 1, which is a registered utility model, characterized in that a pair of ultrasonic transducers are attached to a connecting member in a variable distance.

(3) Utility model registration claim 1, characterized in that a gate valve is provided for inserting a tool into the pipe that is axially symmetrical to the ultrasonic reflecting surface on the inner surface of the pipe and polishes the reflecting surface. Ultrasonic flowmeter as described in section.

(4) Ultrasonic flow rate according to claim 3 of the utility model registration claim, characterized in that in normal measurement conditions, a temperature compensation thermometer is attached to a gate valve for inserting a tool for polishing the reflective surface. Total.