JPS633247B2 - - Google Patents
Info
- Publication number
- JPS633247B2 JPS633247B2 JP16496282A JP16496282A JPS633247B2 JP S633247 B2 JPS633247 B2 JP S633247B2 JP 16496282 A JP16496282 A JP 16496282A JP 16496282 A JP16496282 A JP 16496282A JP S633247 B2 JPS633247 B2 JP S633247B2
- Authority
- JP
- Japan
- Prior art keywords
- band
- band piece
- flow path
- regulating member
- type flowmeter
- 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.)
- Expired
Links
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/54—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by means of chains, flexible bands or wires introduced into and moved by, the flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Description
【発明の詳細な説明】
本発明は本発明者等が昭和57年特許願第112525
号（特開昭59−5917号公報）により開示したバン
ド型流量計に関する。[Detailed Description of the Invention] The present invention was made by the present inventors in patent application No. 112525 filed in 1982.
The present invention relates to a band-type flowmeter disclosed in No. (Japanese Unexamined Patent Publication No. 59-5917).
このバンド型流量計は内部に断面矩形状の流路
を有する筐体内に可撓性のあるバンド片を屈曲さ
せて設け、これが上記流路内を通過する流体によ
つて波状に振動するよう構成し、上記バンド片の
振動数を検出して流体の流量を知るものである
が、この流量計には上記バンド片の下流側固定部
が流体の通過に伴うバンド片の波状の振動によつ
て疲労破壊を起すという問題点があつた。 This band-type flowmeter has a flexible band piece bent inside a housing that has a flow path with a rectangular cross section, and is configured to vibrate in a wave-like manner due to the fluid passing through the flow path. The flow rate of the fluid is determined by detecting the frequency of the band piece, but in this flow meter, the downstream fixed part of the band piece detects the vibration frequency of the band piece due to the wave-like vibration of the band piece as the fluid passes through. There was a problem that fatigue failure occurred.
本発明は叙上の観点に立つてなされたものであ
り、バンド片が疲労破壊を起すことがなく、長期
にわたり使用できるバンド型流量計を提供するこ
とを目的とする。 The present invention has been made based on the above-mentioned viewpoints, and an object of the present invention is to provide a band-type flowmeter that can be used for a long period of time without causing fatigue failure of the band pieces.
而して、本発明の要旨とするところは下流側バ
ンド片固定部近傍の流路内に流体を自由に流通さ
せる複数の流通孔と、バンド片固定部から上流側
に向かつてＶ字型に開き、固定部から筐体壁に至
るバンド片振幅規制面とを有するバンド片規制部
材を設け、これによりバンド片の下流端部分の振
動領域を限定し、その疲労破壊を防止することに
ある。 Therefore, the gist of the present invention is to provide a plurality of flow holes that allow fluid to flow freely in the flow path near the downstream side band piece fixing part, and a V-shaped hole extending from the band piece fixing part toward the upstream side. An object of the present invention is to provide a band piece regulating member that opens and has a band piece amplitude regulating surface extending from a fixed portion to a housing wall, thereby limiting the vibration region of the downstream end portion of the band piece and preventing fatigue failure thereof.
以下図面にもとづいて本発明の構成の詳細を説
明する。 The details of the configuration of the present invention will be explained below based on the drawings.
第１図は本発明にかかるバンド型流量計の一実
施例を示す一部破断斜視図、第２図は本発明の他
の一実施例を示す説明図、第３図は第２図中のＸ
−Ｘ線に沿つた断面図、第４図は第２図に示した
バンド片振幅規制面の変更例を示す説明図、第５
図は本発明のさらに別の実施例を示す説明図、第
６図はバンド片規制部材の作用説明図である。 FIG. 1 is a partially cutaway perspective view showing one embodiment of a band type flowmeter according to the present invention, FIG. 2 is an explanatory diagram showing another embodiment of the present invention, and FIG. X
- A cross-sectional view taken along the X-ray;
The figure is an explanatory view showing still another embodiment of the present invention, and FIG. 6 is an explanatory view of the operation of the band piece regulating member.
尚、各図中、同一の符号を付したものは同一又
は同等の機能を有する構成要素を示している。 In each figure, the same reference numerals indicate components having the same or equivalent functions.
第１図中、１はその内部に軸直角断面が矩形の
流路を有する中空の筐体、１ａは筐体１の流入
口、１ｂは筐体１の流出口、１ｃ〜１ｆは筐体１
の内壁、２は筐体１内に波状に屈曲した状態で収
納されたバンド片、２ａはバンド片２の上流側の
端辺を取り付けた固定軸、２ｂはバンド片２の下
流側の端辺を取り付けた固定軸、２ｃ，２ｄはバ
ンド片２の長手方向の端辺、３は上記バンド片の
振動を検知するため筐体１の側壁上に取り付けた
検出器、４は筐体１の下流側バンド片固定軸２ｂ
近傍の流路内に設けたバンド片規制部材である。 In FIG. 1, 1 is a hollow casing having a flow path with a rectangular cross section perpendicular to the axis, 1a is an inlet of the casing 1, 1b is an outlet of the casing 1, and 1c to 1f are the casing 1.
, 2 is a band piece stored in the housing 1 in a wave-like bent state, 2a is a fixed shaft to which the upstream end of the band piece 2 is attached, and 2b is the downstream end of the band piece 2 2c and 2d are the longitudinal ends of the band piece 2, 3 is a detector attached to the side wall of the housing 1 to detect the vibration of the band piece, and 4 is the downstream side of the housing 1. Side band piece fixing shaft 2b
This is a band piece regulating member provided in a nearby flow path.
固定軸２ａ，２ｂの両端は筐体１の内壁１ｃ及
び１ｄに取り付けられている。ここで固定軸２ａ
及び２ｂの端部を取り付ける場合に必ずしも筐体
内壁へ固着せず、例えば固定軸２ａ，２ｂの端部
を回動自在に筐体内壁へ軸支してもよく、バンド
片２の上流側及び下流側端辺の位置が筐体１に対
して変動しないような取り付け方であればよい。
但し、場合によつては両端を弾性的に支承した
り、微小距離移動可能に支持してもよい。 Both ends of the fixed shafts 2a and 2b are attached to the inner walls 1c and 1d of the housing 1. Here, the fixed shaft 2a
When attaching the ends of the fixed shafts 2a and 2b, they are not necessarily fixed to the inner wall of the housing. For example, the ends of the fixed shafts 2a and 2b may be rotatably supported on the inner wall of the housing. Any mounting method may be used as long as the position of the downstream end side does not change with respect to the housing 1.
However, depending on the case, both ends may be supported elastically or supported so as to be movable over a minute distance.
バンド片２の軸方向の長さはバンド片２の両面
がその波の頂点部において筐体１の内壁１ｅ及び
１ｆと接触するよう固定軸２ａと固定軸２ｂとの
距離よりも長く設定されている。またバンド片２
の長手方向の両端辺２ｃ及び２ｄは筐体１の内壁
１ｃ及び１ｄに接触している。 The length of the band piece 2 in the axial direction is set to be longer than the distance between the fixed shaft 2a and the fixed shaft 2b so that both sides of the band piece 2 come into contact with the inner walls 1e and 1f of the housing 1 at the peaks of the waves. There is. Also band piece 2
Both longitudinal end sides 2c and 2d of are in contact with the inner walls 1c and 1d of the housing 1.
バンド片規制部材４は平板を格子状に組み合せ
て構成され、下流側固定軸２ｂ近傍の流路内に筐
体１の軸直角断面における流路全体にわたつて設
けられている。 The band piece regulating member 4 is constructed by combining flat plates in a lattice shape, and is provided in the flow path near the downstream fixed shaft 2b over the entire flow path in the axis-perpendicular cross section of the housing 1.
流通孔４ａはバンド片規制部材４中に筐体１の
軸方向と平行に十数〜数十個設けられ、その断面
の形状は矩形であり、且つその大きさは同一であ
る。 More than ten to several tens of communication holes 4a are provided in the band piece regulating member 4 in parallel with the axial direction of the housing 1, and their cross-sectional shapes are rectangular and their sizes are the same.
バンド片固定部材４の上流側端面は上流側にＶ
字型に開いておりバンド片振幅規制面を形成して
いる。 The upstream end surface of the band piece fixing member 4 has a V shape on the upstream side.
It is open in the shape of a letter and forms a band piece amplitude regulating surface.
この振幅規制面は平面であり、両斜面間のなす
角はバンド片２が略正弦波状に振動せしめ得るよ
う設定されている。このためには斜面の傾斜をバ
ンド片２が第６図に示す静止位置２′にあるとき
のバンド片固定部における接線方向に設定するこ
とが推奨される。 This amplitude regulating surface is a flat surface, and the angle formed between both slopes is set so that the band piece 2 can vibrate in a substantially sinusoidal manner. For this purpose, it is recommended that the slope be set in the tangential direction at the band piece fixing portion when the band piece 2 is in the rest position 2' shown in FIG.
第２図はバンド片規制部材が筐体１の軸直角方
向の断面に於て円形状の流通孔を有するバンド型
流量計の実施例を示す説明図である。 FIG. 2 is an explanatory view showing an embodiment of a band type flowmeter in which the band piece regulating member has a circular flow hole in a cross section in a direction perpendicular to the axis of the housing 1. FIG.
第２図中、４ｂはバンド片振幅規制面である。 In FIG. 2, 4b is a band piece amplitude regulating surface.
Ｖ字型に開いたバンド片振幅規制面４ｂの形状
は平面であり、両斜面間のなす角はバンド片２が
略正弦波状に振動せしめ得るよう設定されてい
る。 The V-shaped band piece amplitude regulating surface 4b has a flat shape, and the angle formed between both slopes is set so that the band piece 2 can vibrate in a substantially sinusoidal manner.
第３図は第２図中Ｘ−Ｘ線に沿つた断面図であ
る。 FIG. 3 is a sectional view taken along line X--X in FIG. 2.
流通孔４ｃの断面は円形状であり、バンド片規
制部材４中に筐体１の軸方向と平行に十数〜数十
個設けられ、その大きさは同一であり、流通孔間
の間隔は一定に設定される。 The cross-section of the communication holes 4c is circular, and dozens to several tens of them are provided in the band piece regulating member 4 in parallel to the axial direction of the housing 1, and their sizes are the same, and the intervals between the communication holes are Set to a constant value.
流通孔間の間隔はこれを広くすると圧力損失が
過大となるので可能な限り狭くすることが望まし
いが、間隔をあまり狭くすると強度が不足するの
でバンド片の振動による衝撃に十分耐えられるよ
う設定する。 It is desirable to make the spacing between the flow holes as narrow as possible, as widening the gap will result in excessive pressure loss. However, if the spacing is too narrow, the strength will be insufficient, so it should be set so that it can sufficiently withstand the impact caused by the vibration of the band piece. .
第４図は第２図に示したバンド片規制部材のバ
ンド片振幅規制面を曲面状に変更した例を示す説
明図である。 FIG. 4 is an explanatory diagram showing an example in which the band piece amplitude regulating surface of the band piece regulating member shown in FIG. 2 is changed into a curved surface.
バンド片規制面４ｄはバンド片固定部から上流
側に向かつてＶ字型に開いているが、両斜面の形
状を上流側に向かつて凸の曲面状とし、バンド片
２が第６図に示す静止位置２′にあるとき、これ
に軽く接するようにすると共にバンド片２が略正
弦波状に振動せしめ得るよう構成する。 The band piece regulating surface 4d is open in a V-shape toward the upstream side from the band piece fixing part, but the shape of both slopes is a curved surface that is convex toward the upstream side, and the band piece 2 is shown in FIG. When in the rest position 2', the band piece 2 is configured to lightly touch the rest position 2' and vibrate in a substantially sinusoidal manner.
第５図には一枚の金網５をＶ字型に折り曲げ、
その各端部を筐体内壁に固定して成るバンド片規
制部材が示されている。 In Fig. 5, a piece of wire mesh 5 is bent into a V shape,
A band piece regulating member having each end thereof fixed to the inner wall of the casing is shown.
金網５はバンド片固定部から上流側に向かつて
Ｖ字型に開いており、バンド片規制面を形成して
いる。 The wire mesh 5 opens in a V-shape toward the upstream side from the band piece fixing portion, and forms a band piece regulating surface.
金網５の各端部は筐体１の内壁に固定されてお
り、バンド片規制面の両斜面間のなす角はバンド
片２が略正弦波状に振動せしめ得るよう設定され
る。 Each end of the wire mesh 5 is fixed to the inner wall of the housing 1, and the angle formed between both slopes of the band piece regulating surface is set so that the band piece 2 can vibrate in a substantially sinusoidal manner.
尚、ここで金網５の代りに多数の孔を設けた平
板を同様にしてＶ字型に折り曲げ、これをバンド
片規制部材としてもよい。 Here, instead of the wire mesh 5, a flat plate provided with a large number of holes may be similarly bent into a V-shape, and this may be used as the band piece regulating member.
次に第６図により本発明の作用効果を説明す
る。 Next, the effects of the present invention will be explained with reference to FIG.
流入口１ａから流体が導入されると、バンド片
２は波状に振動するが、バンド片２が振動する際
に形成される波形は上流側と下流側とでは必ずし
も同一ではない。 When fluid is introduced from the inlet 1a, the band piece 2 vibrates in a wave-like manner, but the waveforms formed when the band piece 2 vibrates are not necessarily the same on the upstream and downstream sides.
即ち、流量が０であるときは曲線２′で示す如
く、上流側の波長λ1′と下流側の波形λ2′とは略等
しいが、流れが生じると曲線２″で示す如く、下
流側の波長λ2″は上流側の波長λ1″より短くなり、
バンド片２の固定軸２ｂ付近の部分は流れによつ
て下流側に押し流され、その波形は流体の導入前
の波形に比べて下流側にふくらむ傾向があり、さ
らには曲線２として示す如く固定軸２ｂより下
流に吹き流されることもある。 That is, when the flow rate is 0, the wavelength λ 1 ' on the upstream side and the waveform λ 2 ' on the downstream side are approximately equal, as shown by curve 2', but when a flow occurs, the wavelength λ 1 ' on the downstream side is approximately equal, as shown by curve 2''. The wavelength λ 2 ″ of is shorter than the wavelength λ 1 ″ of the upstream side,
The part of the band piece 2 near the fixed shaft 2b is swept downstream by the flow, and its waveform tends to swell downstream compared to the waveform before the introduction of the fluid, and as shown by curve 2, the fixed shaft It may also be blown downstream from 2b.
そのためバンド片の下流側固定部は上記バンド
片規制部材４が設けられていないと広角度にわた
り屈曲せしめられるのでバンド片２の振動により
短時間内で疲労を生じ、遂には破壊されて仕舞
う。 For this reason, if the band piece regulating member 4 is not provided, the downstream fixing portion of the band piece will be bent over a wide angle, causing fatigue within a short time due to the vibration of the band piece 2, and will eventually break.
バンド片規制部材４はかかる問題点に対処する
ために設けたものであり、固定軸２ｂ付近のバン
ド片の振動範囲を限定し、広角度にわたる屈曲を
抑え、その波形を一定に保つ作用があるので下流
側バンド片固定部の疲労破壊を防止することがで
きる。 The band piece regulating member 4 is provided to deal with this problem, and has the function of limiting the range of vibration of the band piece near the fixed shaft 2b, suppressing bending over a wide angle, and keeping the waveform constant. Therefore, fatigue failure of the downstream band piece fixing portion can be prevented.
本発明は叙上の如く構成されるから、本発明に
よるときは、簡単な構成でありながらバンド片の
疲労破壊が防止され、長時間の使用に耐え得る優
れたバンド型流量計を提供し得るものである。 Since the present invention is constructed as described above, it is possible to provide an excellent band-type flowmeter that has a simple construction but prevents fatigue failure of the band pieces and can withstand long-term use. It is something.
尚、本発明の構成は叙上の実施例に限定される
ものではなく、バンド片規制部材の構成、特にそ
の流通孔の形状は上記に実施例として示した矩形
状、円形状のものの他、六角形状、三角形状、
等々とすることができ、流通孔の数、大きさ、配
置及び流通孔間の間隔等は本発明の目的の範囲内
で自由に設計変更できるものであり、また全体の
形状、構造もブロツク状、板状、格子状、ハニカ
ム状等とすることができ、本発明はそれらの一切
を包摂するものである。 Note that the configuration of the present invention is not limited to the above-mentioned embodiments, and the configuration of the band piece regulating member, particularly the shape of its communication hole, may be rectangular or circular as shown in the above-mentioned embodiments. hexagonal, triangular,
etc., and the number, size, arrangement, and spacing between the communication holes can be freely changed within the scope of the purpose of the present invention, and the overall shape and structure can also be changed to block-like. , plate-like, lattice-like, honeycomb-like, etc., and the present invention encompasses all of them.
第１図は本発明にかかるバンド型流量計の一実
施例を示す一部破断斜視図、第２図は本発明の他
の一実施例を示す説明図、第３図は第２図中のＸ
−Ｘ線に沿つた断面図、第４図は第２図に示した
バンド片振幅規制面の変更例を示す説明図、第５
図は本発明のさらに別の実施例を示す説明図、第
６図はバンド片規制部材の作用説明図である。
１……筐体、２……バンド片、２ａ，２ｂ……
固定軸、３……検出器、４……バンド片規制部
材、４ａ，４ｃ……流通孔、４ｂ，４ｄ……バン
ド片規制面。
FIG. 1 is a partially cutaway perspective view showing one embodiment of a band type flowmeter according to the present invention, FIG. 2 is an explanatory diagram showing another embodiment of the present invention, and FIG. X
- A cross-sectional view taken along the X-ray;
The figure is an explanatory view showing still another embodiment of the present invention, and FIG. 6 is an explanatory view of the operation of the band piece regulating member. 1... Housing, 2... Band piece, 2a, 2b...
Fixed shaft, 3... Detector, 4... Band piece regulating member, 4a, 4c... Communication hole, 4b, 4d... Band piece regulating surface.
Claims (1)
いて上流側と下流側の両端辺を固定されその長さ
が流路中心線に沿つて測つた上記両固定位置間の
距離よりも長く上記流路内に屈曲させて設けられ
上記流路内を通過する流体によつて波状に振動せ
しめられる帯状の薄く且つ柔軟なバンド片と、上
記バンド片の振動数を検出する検出器とから構成
されるバンド型流量計において、下流側バンド片
固定部近傍の流路内に流体を自由に流通させる複
数の流通孔と、バンド片固定部から上流側に向か
つてＶ字型に開き、固定部から筐体壁に至るバン
ド片振幅規制面とを有するバンド片規制部材を設
けたことを特徴とする上記のバンド型流量計。 ２ バンド片規制部材が平板を格子状に組み合せ
たものであり、筐体の軸直角断面に於て矩形の流
通孔を有する特許請求の範囲第１項記載のバンド
型流量計。 ３ バンド片規制部材が筐体の軸直角断面に於て
円形の流通孔を有する特許請求の範囲第１項記載
のバンド型流量計。 ４ バンド片規制部材がＶ字型に折り曲げた金網
である特許請求の範囲第１項記載のバンド型流量
計。 ５ バンド片規制部材が多数の孔を設けたＶ字型
板状体である特許請求の範囲第１項記載のバンド
型流量計。[Scope of Claims] 1. A casing having a flow path therein, and both fixed positions in which both the upstream and downstream end sides of the flow path are fixed and the length thereof is measured along the center line of the flow path. detecting a band-shaped thin and flexible band piece that is bent in the flow path and vibrates in a wave-like manner by the fluid passing through the flow path, and the frequency of the band piece; In a band-type flowmeter, the flowmeter includes a plurality of flow holes that allow fluid to flow freely in the flow path near the downstream band fixing part, and a V-shaped flow path extending from the band fixing part toward the upstream side. The band type flowmeter described above is provided with a band piece regulating member that opens into a shape and has a band piece amplitude regulating surface extending from the fixed part to the housing wall. 2. The band type flowmeter according to claim 1, wherein the band piece regulating member is a combination of flat plates in a lattice shape, and has a rectangular flow hole in a cross section perpendicular to the axis of the housing. 3. The band type flowmeter according to claim 1, wherein the band piece regulating member has a circular flow hole in a cross section perpendicular to the axis of the housing. 4. The band-type flowmeter according to claim 1, wherein the band piece regulating member is a wire mesh bent into a V-shape. 5. The band type flowmeter according to claim 1, wherein the band piece regulating member is a V-shaped plate-like body provided with a large number of holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16496282A JPS5954920A (en) | 1982-09-24 | 1982-09-24 | Band type flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16496282A JPS5954920A (en) | 1982-09-24 | 1982-09-24 | Band type flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5954920A JPS5954920A (en) | 1984-03-29 |
| JPS633247B2 true JPS633247B2 (en) | 1988-01-22 |
Family
ID=15803173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16496282A Granted JPS5954920A (en) | 1982-09-24 | 1982-09-24 | Band type flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5954920A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2860126B2 (en) * | 1989-12-26 | 1999-02-24 | メージャーメント・テクノロジー・インターナショナル | Fluid flow meter |
| US9117468B1 (en) | 2013-03-18 | 2015-08-25 | Magnecomp Corporation | Hard drive suspension microactuator with restraining layer for control of bending |
-
1982
- 1982-09-24 JP JP16496282A patent/JPS5954920A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5954920A (en) | 1984-03-29 |
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