JPS60189856U - Flow detector - Google Patents
Flow detectorInfo
- Publication number
- JPS60189856U JPS60189856U JP7898184U JP7898184U JPS60189856U JP S60189856 U JPS60189856 U JP S60189856U JP 7898184 U JP7898184 U JP 7898184U JP 7898184 U JP7898184 U JP 7898184U JP S60189856 U JPS60189856 U JP S60189856U
- Authority
- JP
- Japan
- Prior art keywords
- flow
- absence
- electric vibration
- absence detector
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
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
第１図は本考案の一実施例の要部の平面図、第２図はそ
の縦断側面図、第３図は第１図の切断面線Ａ−Ａから見
た断面図、第４図は第１図の実施例の信号処理手段のブ
ロック図、第５図は信号波形図である。
１・・・管路、３・・・検出管、４・・・絞り部、５ａ
、５ｂ・・・圧電素子。Fig. 1 is a plan view of a main part of an embodiment of the present invention, Fig. 2 is a vertical side view thereof, Fig. 3 is a cross-sectional view taken along the section line A-A in Fig. 1, and Fig. 4 is a FIG. 1 is a block diagram of the signal processing means of the embodiment, and FIG. 5 is a signal waveform diagram. DESCRIPTION OF SYMBOLS 1... Pipe line, 3... Detection tube, 4... Throttle part, 5a
, 5b...piezoelectric element.
Claims (1)
の流れ有無検知器であって、前記管路には、内壁の一部
に流体の流れに乱流を生じさせるための絞り部が形成さ
れた極比管が接続され、前記絞り部の近傍の検出管の外
周には、乱流による流体振動を、対応する電気信号に変
換するための少なくとも１つの電気振動変換器が設けら
れ、前記電気振動変換器からの出力によって流れの有無
を検知することを特徴とする流れ有無検知器。 （２）前記検出管は、振動に共鳴しやすく、かつ振動伝
ｉ性のよい材料から成ることを特徴とする実用新案登録
請求の範囲第１項記載の流れ有無検知器。 （３） 前記電気振動変換器は圧電素子であることを
特徴とする実用新案登録請求の範囲第１項または第２項
記載の流れ有無検知器。 （４） 前記電気振動変換器は、複数段けられ、各電
気振動変換器は、相互に異なる固有共振周波数を有する
ことを特徴とする実用新案登録請求の範囲第１項、第２
項または第３項記載の流れ有無検知器。[Claims for Utility Model Registration] ゛(1) A flow presence/absence detector for detecting the presence or absence of a fluid flow flowing through a conduit, wherein the conduit includes a part of the inner wall that is disturbs the fluid flow. A polar ratio tube having a constriction section for generating a flow is connected to the detection tube, and at least one tube is connected to the outer periphery of the detection tube near the constriction section for converting fluid vibrations caused by the turbulent flow into a corresponding electric signal. 1. A flow presence/absence detector characterized in that a flow detection device is provided with two electric vibration transducers, and detects the presence or absence of a flow based on an output from the electric vibration transducer. (2) The flow presence/absence detector according to claim 1, wherein the detection tube is made of a material that easily resonates with vibrations and has good vibration conductivity. (3) The flow presence/absence detector according to claim 1 or 2, wherein the electric vibration transducer is a piezoelectric element. (4) The electric vibration transducer is provided in multiple stages, and each electric vibration converter has a mutually different natural resonance frequency.
Flow presence/absence detector according to item 1 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7898184U JPS60189856U (en) | 1984-05-28 | 1984-05-28 | Flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7898184U JPS60189856U (en) | 1984-05-28 | 1984-05-28 | Flow detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60189856U true JPS60189856U (en) | 1985-12-16 |
Family
ID=30623464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7898184U Pending JPS60189856U (en) | 1984-05-28 | 1984-05-28 | Flow detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60189856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011085529A (en) * | 2009-10-16 | 2011-04-28 | Kubota Corp | Device for evaluation of powder state |
| JP2011529574A (en) * | 2008-07-30 | 2011-12-08 | エアバス オペレーションズ リミテッド | Oscillating element sensor for detecting boundary layer transition 1 |
-
1984
- 1984-05-28 JP JP7898184U patent/JPS60189856U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011529574A (en) * | 2008-07-30 | 2011-12-08 | エアバス オペレーションズ リミテッド | Oscillating element sensor for detecting boundary layer transition 1 |
| JP2011085529A (en) * | 2009-10-16 | 2011-04-28 | Kubota Corp | Device for evaluation of powder state |
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