JPS59134023U

JPS59134023U - Flow rate measuring device

Info

Publication number: JPS59134023U
Application number: JP2801283U
Authority: JP
Inventors: 津田　實
Original assignee: トキコ株式会社
Priority date: 1983-02-26
Filing date: 1983-02-26
Publication date: 1984-09-07
Also published as: JPS6330973Y2

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図および第２図は本考案の第１の実施例を示し、第
１図は正常な計測状態を示す縦断面図、第２図は背圧弁
が閉弁した異常状態を示す縦断面図、第３図は本考案の
第２の実施例を示す縦断面図、第４図は本考案の第３の
実施例を示す部分縦断面図である。１・・・・・・空気分離器、３Ａ・・・・・・排気口、
６・・・・・・流量計、１０・・・・・・背圧弁、１３
・・・・・・圧力室、１８・・・・・・配管、１９・・
・・・・絞り。、１２Ａ（、。ｌｊ　　、７目？　ス（アｊ＼５）Figures 1 and 2 show a first embodiment of the present invention, with Figure 1 being a vertical cross-sectional view showing a normal measurement state, and Figure 2 being a vertical cross-sectional view showing an abnormal state in which the back pressure valve is closed. 3 is a vertical sectional view showing a second embodiment of the present invention, and FIG. 4 is a partial vertical sectional view showing a third embodiment of the present invention. 1...Air separator, 3A...Exhaust port,
6...Flowmeter, 10...Back pressure valve, 13
...Pressure chamber, 18...Piping, 19...
...Aperture. , 12A (,. lj , 7th? Su (Aj\5)

Claims

[Scope of utility model registration request]

(1) A flow meter is provided in the middle of the flow path through which the fluid to be measured flows, an air separator is provided on the inflow side of the flow meter, and a valve is opened in the middle of the flow path using the pressure of the fluid to be measured as back pressure. Install a back pressure valve,
The exhaust port of the air separator and the pressure chamber of the back pressure valve are communicated by piping, a restriction is provided in the middle of the air passage including the piping, and when the air separated by the air separator increases, the back pressure valve A flow rate measuring device configured to close the back pressure valve by the pressure of air acting on the flow rate measuring device.

(2) The back pressure valve is disposed on either the inflow side or the outflow side of the flowmeter.
1) The flow rate measuring device described in section 1).

(3) A check valve that allows free flow of air from the piping side into the pressure chamber between the piping and the pressure chamber of the back pressure valve;
The flow rate measuring device according to claim (1), which is registered as a utility model, is provided with a throttle that restricts the discharge of air from the pressure chamber side to the piping, and prevents hunting when the back pressure valve is restarted.