JPH0485120U - - Google Patents
Info
- Publication number
- JPH0485120U JPH0485120U JP12766190U JP12766190U JPH0485120U JP H0485120 U JPH0485120 U JP H0485120U JP 12766190 U JP12766190 U JP 12766190U JP 12766190 U JP12766190 U JP 12766190U JP H0485120 U JPH0485120 U JP H0485120U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- enlarged
- channel
- flow path
- section
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Description
図面は従来及び本考案に係る流体振動形流量計
の実施例を示し、第１図は本願の流体振動形流量
計を組み込んだ流量測定装置の平面図、第２図は
本願の流体振動形流量計の平面図、第３図は、イ
，ロ，ハは、ノズル吸引部の幅と流量−器差特性
の関係を示す図、第４図はノズル吸引部の幅と△
Ｅの関係を示す図である。
６……貯留部、８……ノズル、８ｗ……直線状
内壁、９ｔ……ノズル入口端面、１１……ノズル
噴出面、１２……流路拡大部、１３……絞り流路
部、１５……拡大流路内壁面、１６……主円弧部
、１７……拡大壁部、１８……副円弧部、２０…
…ターゲツト、Ｌ２……ノズル内流路。
The drawings show examples of the conventional fluid vibratory flowmeter and the present invention, FIG. 1 is a plan view of a flow rate measuring device incorporating the fluid vibratory flowmeter of the present invention, and FIG. 2 is a fluid vibratory flowmeter of the present invention. Figure 3 shows the relationship between the width of the nozzle suction part and the flow rate-instrument difference characteristics, and Figure 4 shows the relationship between the width of the nozzle suction part and △
It is a figure showing the relationship of E. 6... Storage part, 8... Nozzle, 8w... Linear inner wall, 9t... Nozzle inlet end face, 11... Nozzle ejection surface, 12... Channel enlarged part, 13... Restricted channel part, 15... ...Enlarged channel inner wall surface, 16...Main circular arc portion, 17...Enlarged wall portion, 18...Sub-circular arc portion, 20...
...Target, L2...Flow path inside the nozzle.
Claims (1)
ズル８を流路内に配設し、このノズル８の噴出側
に前記ノズル８の軸芯に対して対称な拡大流路内
壁面１５を有する流路拡大部１２を設けるととも
に、前記流路拡大部１２における流路中央部に前
記ノズル８より噴出する噴流の直進を阻害するタ
ーゲツト２０を設け、さらに、前記流路拡大部１
２の下流側に前記流路拡大部１２の後端部より狭
い流路幅を有する絞り流路部１３を設けた構成で
あるとともに、 前記拡大流路内壁面１５が、前記ノズル噴出面
１１に接する主円弧部１６と、前記主円弧部１６
に滑らかに接続する拡大壁部１７と、さらに前記
拡大壁部１７に滑らかに接続し、且つ下流側で前
記絞り流路部１３に接続する副円弧部１８とから
構成され、さらに前記拡大壁部１７が流路方向で
前記ターゲツト２０の位置に相当する位置まで下
流側ほど流路を拡大させる構成の流体振動形流量
計であつて、 前記ノズル８のノズル内流路Ｌ２が、ノズル入
口端面９ｔと前記ノズル噴出面１１との間を連結
する一対の直線状内壁８ｗの間に形成されるもの
であり、 前記ノズル内流路Ｌ２の幅が、ノズル噴出面１
１に向かつて変化して構成され、そのノズルの噴
出部の幅をｗｏ、ノズルの吸引部の幅をｗｉとし
た場合のｗｉ／ｗｏが、０．９〜１．２以内であ
る流体振動形流量計。 ２ 前記ノズル噴出面１１と前記ノズル入口端面
９ｔとの離間距離であるノズル整流長さをＮｌ、
前記主円弧部１６の半径をＲ、前記副円弧部１８
の中心の前記ノズル噴出面１１からの流路方向離
間距離をＬ、前記副円弧部１８の中心のノズル軸
心からの流路横断方向離間距離をｘ、前記副円弧
部１８の半径をｒ、前記ターゲツト２０の幅をＴ
ｗ、前記ターゲツト２０の先端位置の前記ノズル
噴出面１１からの流路方向離間距離をＴｌ、前記
絞り流路部１３の幅をＰとすると、前記Ｎｌ，ｗ
ｏ，Ｒ，Ｌ，ｘ，ｒ，Ｔｗ，Ｔｌ，Ｐが、 Ｎｌ／ｗｏ＝４．６５〜６．２５ Ｒ／ｗｏ＝３．１〜５．３ Ｌ／Ｒ＝１．５ ｘ／Ｒ＝０．７〜０．８ ｒ／Ｒ＝０．４５〜０．５６ Ｔｗ／ｗｏ＝１．５６〜２．００ Ｔｌ／Ｒ＝０．９４〜１．１ Ｐ／Ｒ＝１．２４〜１．６２ の関係にある請求項１記載の流体振動形流量計。 ３ 前記ノズル８の上流側に流入流体を貯留する
貯留部６が設けられ、この貯留部６に対して前記
流入流体が前記ノズル入口端面９ｔにほぼ平行に
流入する構成とされている請求項２記載の流体振
動形流量計。[Claims for Utility Model Registration] 1. A nozzle 8 having a nozzle ejection surface 11 perpendicular to the flow path is arranged in the flow path, and an enlarged area symmetrical to the axis of the nozzle 8 on the ejection side of the nozzle 8. A channel enlarged section 12 having a channel inner wall surface 15 is provided, and a target 20 is provided at the center of the channel in the channel enlarged section 12 to prevent the jet flow ejected from the nozzle 8 from moving straight. Enlarged section 1
2, a throttle channel section 13 having a channel width narrower than the rear end of the enlarged channel section 12 is provided on the downstream side of the enlarged channel section 12, and the inner wall surface 15 of the enlarged channel is connected to the nozzle ejection surface 11. The contacting main arc portion 16 and the main arc portion 16
It is composed of an enlarged wall part 17 that smoothly connects to the enlarged wall part 17, and a sub-circular part 18 that further smoothly connects to the enlarged wall part 17 and connects to the throttle channel part 13 on the downstream side, and further includes an enlarged wall part 18. Reference numeral 17 is a fluid vibrating flowmeter having a configuration in which the flow path is expanded toward the downstream side to a position corresponding to the position of the target 20 in the flow path direction, and the nozzle internal flow path L2 of the nozzle 8 is connected to the nozzle inlet end face 9t. It is formed between a pair of linear inner walls 8w that connect the nozzle ejection surface 11 and
1, and where wi/wo is within 0.9 to 1.2, where wo is the width of the ejection part of the nozzle and wi is the width of the suction part of the nozzle. Flowmeter. 2. The nozzle rectification length, which is the separation distance between the nozzle ejection surface 11 and the nozzle inlet end surface 9t, is Nl,
The radius of the main arc portion 16 is R, and the sub arc portion 18 is
The distance in the flow path direction from the center of the nozzle ejection surface 11 is L, the distance in the flow path cross direction from the nozzle axis to the center of the sub-arc part 18 is x, and the radius of the sub-arc part 18 is r. The width of the target 20 is T
w, the distance in the flow path direction of the tip position of the target 20 from the nozzle ejection surface 11 is Tl, and the width of the throttle flow path section 13 is P, then the Nl,w
o, R, L, x, r, Tw, Tl, P are Nl/wo=4.65-6.25 R/wo=3.1-5.3 L/R=1.5 x/R= 0.7-0.8 r/R=0.45-0.56 Tw/wo=1.56-2.00 Tl/R=0.94-1.1 P/R=1.24-1. 62. The fluid vibratory flowmeter according to claim 1, which has the following relationship. 3. A storage section 6 for storing inflow fluid is provided on the upstream side of the nozzle 8, and the inflow fluid flows into the storage section 6 substantially parallel to the nozzle inlet end surface 9t. The fluid vibrating flowmeter described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990127661U JP2524595Y2 (en) | 1990-11-29 | 1990-11-29 | Fluid vibration type flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990127661U JP2524595Y2 (en) | 1990-11-29 | 1990-11-29 | Fluid vibration type flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485120U true JPH0485120U (en) | 1992-07-23 |
| JP2524595Y2 JP2524595Y2 (en) | 1997-02-05 |
Family
ID=31875152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990127661U Expired - Fee Related JP2524595Y2 (en) | 1990-11-29 | 1990-11-29 | Fluid vibration type flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2524595Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317517A (en) * | 1989-06-14 | 1991-01-25 | Toshihiko Shiyakouchi | Method and apparatus for generating vibration of fluid |
-
1990
- 1990-11-29 JP JP1990127661U patent/JP2524595Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317517A (en) * | 1989-06-14 | 1991-01-25 | Toshihiko Shiyakouchi | Method and apparatus for generating vibration of fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2524595Y2 (en) | 1997-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |