JPS62245112A - Method and apparatus for measuring flow amount of powder - Google Patents
Method and apparatus for measuring flow amount of powderInfo
- Publication number
- JPS62245112A JPS62245112A JP8909586A JP8909586A JPS62245112A JP S62245112 A JPS62245112 A JP S62245112A JP 8909586 A JP8909586 A JP 8909586A JP 8909586 A JP8909586 A JP 8909586A JP S62245112 A JPS62245112 A JP S62245112A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- light
- pipe
- gas
- flow rate
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 13
- 238000000691 measurement method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、粉体流量測定方法およびその装置に関し、
特に粉体の付着および粉体流れの乱れによる、流量の測
定精度の低下を防止するのに好適な粉体流量測定方法お
よびその装置の改良にかかるものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and device for measuring a powder flow rate,
In particular, the present invention relates to improvements in a method and device for measuring a powder flow rate suitable for preventing deterioration in flow rate measurement accuracy due to adhesion of powder and disturbance of powder flow.
粉体の連続的な流れの量、すなわち粉体流量を知ること
は連続プロセスのコントロールには重要なことである。Knowing the amount of continuous flow of powder, ie, the powder flow rate, is important for controlling continuous processes.
そして、この粉体流量量測定する方法としては直接、固
相の流量を計測する方法と、固体流と気体流からなる、
いわゆる固気相系中の固相の流量を計測する方法とがあ
る。There are two methods to measure the powder flow rate: one is to directly measure the solid phase flow rate, and the other is to measure the solid phase flow rate, which consists of a solid flow and a gas flow.
There is a method of measuring the flow rate of the solid phase in a so-called solid-gas phase system.
従来、固気相系の流量計としては、所謂、差圧式あるい
は電気式の流量計があった。Conventionally, solid-gas phase flowmeters include so-called differential pressure type or electric type flowmeters.
ところで、粉体の流量を固体−気体流として測定する方
法としては、例えば第２図あるいは第３図に示すような
方法が考えられる。By the way, as a method for measuring the flow rate of powder as a solid-gas flow, for example, a method as shown in FIG. 2 or 3 can be considered.
すなわち、第２図に示す方法は、矢印Ｐ方向に気体−粉
体流を流し、その流れと垂直な方向から光量測定素子５
７により、粉体５２に光を照射しその反射光の光量から
、粉体流量量測定する方法である。That is, in the method shown in FIG. 2, a gas-powder flow is caused to flow in the direction of arrow P, and the light amount measuring element 5 is
7, the powder 52 is irradiated with light and the powder flow rate is measured from the amount of reflected light.
また、第３図に示す方法は、粉体流を流す方向は第２図
の方法と同様であるが、測定口５６への粉体５２の付着
を防止するため、気体流は光を照射する方向と同じ、粉
体流と垂直な矢印Ｑ方向から流す方法である。In the method shown in FIG. 3, the direction in which the powder flow is the same as the method shown in FIG. 2, but in order to prevent the powder 52 from adhering to the measurement port 56, the gas flow is irradiated with light. This is a method of flowing from the direction of arrow Q, which is perpendicular to the powder flow.
なお、第２図および第３図において、５４は粉体流通パ
イプ、５５は光量測定素子５７の設置用パイプ、５７２
は光量測定素子５７を構成する発光素子、５７４は同じ
く受光素子である。In addition, in FIGS. 2 and 3, 54 is a powder distribution pipe, 55 is a pipe for installing the light amount measuring element 57, and 572 is a powder distribution pipe.
574 is a light emitting element constituting the light amount measuring element 57, and 574 is a light receiving element.
また、第２図において、５８は設置用パイプ５５内へ粉
体５２が流入するのを防止するため、測定口５６に取り
付けられたガラス板である。Moreover, in FIG. 2, 58 is a glass plate attached to the measurement port 56 in order to prevent the powder 52 from flowing into the installation pipe 55.
しかしながら、これまで考えられている粉体流量測定方
法は以下のような問題がある。However, the powder flow rate measurement methods considered so far have the following problems.
すなわち、前者の方法は、ガラス板５８の下面５８２に
粉体５２が付着し、光量量測定することができないとい
う問題がある。That is, the former method has a problem in that the powder 52 adheres to the lower surface 582 of the glass plate 58, making it impossible to measure the amount of light.
また、後者の方法は、粉体流通パイプ５４内の粉体流と
気体流の交差する部分５４２で、粉体流に乱れが生じ易
く正確な流量測定ができないという問題がある。Furthermore, the latter method has a problem in that the powder flow tends to be disturbed at the intersection 542 of the powder flow and the gas flow in the powder distribution pipe 54, making it impossible to accurately measure the flow rate.
また、前者および後者の方法に共通して、粉体流通パイ
プ５４内へ粉体５２が付着するという問題や、粉体流通
パイプ５４断面内の粉体流の疎密分布が不明であるとい
う問題がある。In addition, the former and latter methods commonly have the problem of the powder 52 adhering to the inside of the powder distribution pipe 54 and the problem that the density distribution of the powder flow within the cross section of the powder distribution pipe 54 is unclear. be.
さらに、高速な粉体流（１０〜２０ｍ／ｓ）によって、
測定口５６、場合によっては光量測定素子５７が摩耗し
て測定をすることができな（なるという問題がある。Furthermore, by high-speed powder flow (10-20 m/s),
There is a problem in that the measurement port 56 and, in some cases, the light amount measurement element 57 are worn out and cannot be measured.
従って、本発明の目的は、反射光検知方式の粉体流量の
測定方法において、粉体流量の測定精度を向上すること
にある。Therefore, an object of the present invention is to improve the measurement accuracy of powder flow rate in a powder flow rate measurement method using reflected light detection.
このため、本発明にかかる粉体流量測定方法およびその
装置は、粉体流が当たらないように、気体流通パイプ内
の流出方向手前側に配置した光量測定素子の発光部から
粉体へ光を照射し、その反射光を受光部で検知すること
により、その光量から粉体流量量測定するようにしたこ
とを特徴とするものである。For this reason, the method and device for measuring the flow rate of powder according to the present invention emit light from the light emitting part of the light amount measuring element placed on the front side in the outflow direction in the gas distribution pipe to the powder so as not to be hit by the powder flow. The powder flow rate is measured from the amount of light by irradiating the powder and detecting the reflected light with a light receiving section.
具体的には、本発明にかかる第１の発明は、ストレート
パイプの一方から気体を流通させ、前記ストレートパイ
プに略直角に取り付けた粉体供給パイプから粉体を供給
することにより、前記気体と前記粉体の交差部分で、該
気体の流通により該粉体を吹き飛ばすとともに、前記交
差部分の上流側に設けた光量測定素子から前記粉体に光
を照射して、その反射光の光量から粉体流量量測定する
ことを特徴とする粉体流量測定方法である。Specifically, in the first aspect of the present invention, the gas and At the intersection of the powder, the powder is blown away by the flow of the gas, and the powder is irradiated with light from a light intensity measuring element provided upstream of the intersection, and the amount of reflected light is used to measure the powder. This is a powder flow rate measuring method characterized by measuring the body flow rate.
また、第２の発明は、一方向に気体が流通されるストレ
ートパイプと、前記ストレートパイプに略直角に取り付
けられ、粉体が供給される粉体供給パイプと、前記気体
と前記粉体の交差部分の上流側に設けられ、粉体に光を
照射する光量測定素子とからなり、前記気体の流通によ
り前記粉体を吹き飛ばすとともに、前記粉体の反射光の
光量から粉体流量量測定することを特徴とする粉体流量
測定装置である。Further, a second invention provides a straight pipe through which gas flows in one direction, a powder supply pipe attached at a substantially right angle to the straight pipe and through which powder is supplied, and an intersection between the gas and the powder. A light amount measuring element is provided on the upstream side of the part and irradiates the powder with light, and the powder is blown away by the flow of the gas and the powder flow rate is measured from the amount of light reflected from the powder. This is a powder flow rate measurement device characterized by:
上記の構成にかかる本発明の詳細な説明すると、光量測
定素子が気体流中にあり、しかも粉体流の流入位置手前
側にあるため、粉体の付着を防止でき粉体流量を正確に
測定することができる。A detailed explanation of the present invention having the above configuration is that since the light amount measuring element is in the gas flow and is located in front of the inflow position of the powder flow, adhesion of powder can be prevented and the powder flow rate can be accurately measured. can do.
以下、本発明の一実施例を図面に基づいて詳細に説明す
る。Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.
第１図は本発明にかかる粉体流量測定装置の概略構成を
示す部分断面図である。FIG. 1 is a partial sectional view showing a schematic configuration of a powder flow rate measuring device according to the present invention.
粉体流量測定装置１は、ストレートパイプ２と、粉体供
給パイプ４と、光量測定素子６と、演算部７と、表示部
８および発光電源９から構成されている。The powder flow rate measuring device 1 includes a straight pipe 2, a powder supply pipe 4, a light amount measuring element 6, a calculation section 7, a display section 8, and a light emitting power source 9.
ストレートパイプ２は一方向（第１図においては矢印Ａ
方向）に気体を流通させるためのものである。そして、
粉体供給パイプ４はストレートパイプ２に略直角に取り
付けられている。The straight pipe 2 is oriented in one direction (arrow A in Figure 1).
This is to allow gas to flow in the direction (direction). and,
The powder supply pipe 4 is attached to the straight pipe 2 at a substantially right angle.
粉体供給パイプ４が取り付けられたストレートパイプ２
内のすぐ上流側にはエジェクタ２２が取り付けられてい
る。エジェクタ２２は気体流を絞り流速を上げるための
ものである。Straight pipe 2 with powder supply pipe 4 attached
An ejector 22 is attached immediately upstream inside. The ejector 22 is used to throttle the gas flow and increase the flow velocity.
粉体供給パイプ４は粉体４２を供給するためのものであ
る。そして、粉体供給パイプ４から供給された粉体４２
はエジェクタ２２を通過してきた気体流により矢印Ｂ方
向に吹き飛ばされる。The powder supply pipe 4 is for supplying powder 42. Then, the powder 42 supplied from the powder supply pipe 4
is blown off in the direction of arrow B by the gas flow passing through the ejector 22.
光量測定素子６は、気体流により吹き飛ばされる粉体４
２に光を照射して、その反射光の光量を検知するための
もので、エジェクタ２２の貫通穴２２２の内部に配設さ
れている。The light quantity measuring element 6 detects the powder 4 blown away by the gas flow.
This is for irradiating light onto the ejector 2 and detecting the amount of reflected light, and is disposed inside the through hole 222 of the ejector 22.
そして、光量測定素子６は発光部６２と受光部６４が一
体とされた公知の構造を有するものである。なお、光量
測定素子６としては例えばフォトセンサーを使用するこ
とができる。The light amount measuring element 6 has a known structure in which a light emitting section 62 and a light receiving section 64 are integrated. Note that as the light amount measuring element 6, for example, a photosensor can be used.
そして、発光部６２は配線６６により発光電源９に接続
されるとともに、受光部６４は配線６８により演算部７
に接続されている。The light emitting section 62 is connected to the light emitting power source 9 through wiring 66, and the light receiving section 64 is connected to the calculation section 7 through wiring 68.
It is connected to the.
演算部７は光量測定素子６により検知された光量から粉
体流量を計算するためのもので、公知のＣＰＵユニット
から構成されている。The calculation section 7 is for calculating the powder flow rate from the amount of light detected by the light amount measurement element 6, and is composed of a known CPU unit.
すなわち、演算部７は光量測定素子６の受光部６４から
入力された光量データをカウントし、演算部７が有する
光量−粉体流量の検量線と比較照合して粉体流量を算出
する。That is, the calculation section 7 counts the light amount data inputted from the light receiving section 64 of the light amount measurement element 6, and compares the data with a calibration curve of light amount-powder flow rate which the calculation section 7 has to calculate the powder flow rate.
表示部８は演算部７から出力された粉体流量をデジタル
表示するためのもので、公知の表示回路を内蔵するもの
である。The display section 8 is for digitally displaying the powder flow rate outputted from the calculation section 7, and has a built-in known display circuit.
次に、上記の構成にかかる粉体流量測定装′Ｘ！ＬＬを
使用して粉体流量量測定する方法について説明する。Next, the powder flow rate measuring device 'X! A method of measuring powder flow rate using LL will be explained.
まず、ストレートパイプ２の上流側から気体を流通させ
、粉体供給パイプ４から粉体４２を供給する。First, gas is caused to flow from the upstream side of the straight pipe 2, and powder 42 is supplied from the powder supply pipe 4.
これにより、粉体４２は気体流と交差する部分４２２で
気体流により吹き飛ばされる。そこで、この交差部分４
２２に位置する粉体４２に光量測定素子６の発光部６２
から光を照射する。As a result, the powder 42 is blown away by the gas flow at a portion 422 where it intersects with the gas flow. Therefore, this intersection 4
The light emitting part 62 of the light amount measuring element 6 is attached to the powder 42 located at 22.
Emits light from.
そして、この粉体４２の反射光から光量測定素子６の受
光部６４でその光量を検知し、さらにその光量から演算
部７で粉体流量を算出し表示部８にデジタル表示する。The amount of light reflected from the powder 42 is detected by the light receiving section 64 of the light amount measuring element 6, and the powder flow rate is calculated from the amount of light by the calculation section 7 and displayed digitally on the display section 8.
このようにして、粉体流量量測定することができる。In this way, the powder flow rate can be measured.
以上、本発明の特定の実施例について説明したがこれに
限定されるものではなく、特許請求の範囲に記載した範
囲内で当業者が実施可能な種々の別な態様が考えられる
。Although specific embodiments of the present invention have been described above, the present invention is not limited thereto, and various other embodiments that can be implemented by those skilled in the art are possible within the scope of the claims.
例えば、上記の実施例においては光量測定素子としてフ
ォトセンサーを使用したが、フォトセンサーでなくても
フォトダイオード、フォトトランジスタあるいはＣＤＳ
等を使用してもよい。For example, in the above embodiment, a photosensor was used as the light amount measuring element, but instead of a photosensor, a photodiode, a phototransistor, or a CDS can be used.
etc. may also be used.
以上説明したように、本発明にかかる粉体流量測定方法
およびその装置は、気体流通パイプ内の流出方向手前側
に配置した光量測定素子の発光部から粉体へ光を照射し
、その反射光を受光部で検知することにより、その光量
から粉体流量量測定するようにしたため、粉体流量の測
定精度を向上することができる。As explained above, the powder flow rate measuring method and device according to the present invention irradiates light onto the powder from the light emitting part of the light amount measuring element arranged on the front side in the outflow direction in the gas flow pipe, and the reflected light Since the powder flow rate is measured from the amount of light by detecting the light with the light receiving unit, the measurement accuracy of the powder flow rate can be improved.
また、光量測定素子が気体流中に位置しているため粉体
の付着が防止できるとともに、測定状態を常時一定に維
持することができる。Furthermore, since the light amount measuring element is located in the gas flow, adhesion of powder can be prevented and the measurement state can be maintained constant at all times.
また、エジェクタ中に光量測定素子が位置しているため
素子の摩耗を防止することができる。Furthermore, since the light amount measuring element is located in the ejector, wear of the element can be prevented.
また、光量測定素子の数を増加させて気体流の流通断面
内に複数個配置すれば、特定位置における粉体の分布も
測定することができる。Furthermore, by increasing the number of light quantity measuring elements and arranging a plurality of them within the flow cross section of the gas flow, it is also possible to measure the distribution of powder at a specific position.
さらに、測定の応答性が良む、まためリアルタイムで測
定することができるというすぐれた効果を奏する。Furthermore, it has excellent effects in that it has good measurement responsiveness and can be measured in real time.
第１図は本発明にかかる粉体流量測定装置の概略構成を
示す部分断面図、第２図および第３図は従来の粉体流量
測定方法を概略的に示す断面図である。
ｉ −−−−−−一粉体流量測定装置
２−・−・−ストレートパイプ
４・・−・・・−粉体供給パイプ 。
６−・・−光量測定素子
４２・−−−−−・粉体
４２２・−・−交差部分
出願人 トヨタ自動車株式会社
第２図
第８図
↓FIG. 1 is a partial cross-sectional view showing a schematic configuration of a powder flow rate measuring device according to the present invention, and FIGS. 2 and 3 are cross-sectional views schematically showing a conventional powder flow rate measuring method. i ---------Powder flow rate measuring device 2---Straight pipe 4--Powder supply pipe. 6-...-Light amount measuring element 42--Powder 422--Intersection Applicant Toyota Motor Corporation Figure 2 Figure 8↓
Claims (2)
記ストレートパイプに略直角に取り付けた粉体供給パイ
プから粉体を供給することにより、前記気体と前記粉体
の交差部分で、該気体の流通により該粉体を吹き飛ばす
とともに、前記交差部分の上流側に設けた光量測定素子
から前記粉体に光を照射して、その反射光の光量から粉
体流量を測定することを特徴とする粉体流量測定方法。(1) By circulating gas from one side of a straight pipe and supplying powder from a powder supply pipe attached at a substantially right angle to the straight pipe, the gas is distributed at the intersection of the gas and the powder. The powder is blown away by the powder, and the powder is irradiated with light from a light intensity measurement element provided upstream of the intersection, and the powder flow rate is measured from the intensity of the reflected light. Flow measurement method.
前記ストレートパイプに略直角に取り付けられ、粉体が
供給される粉体供給パイプと、前記気体と前記粉体の交
差部分の上流側に設けられ、粉体に光を照射する光量測
定素子とからなり、前記気体の流通により前記粉体を吹
き飛ばすとともに、前記粉体の反射光の光量から粉体流
量を測定することを特徴とする粉体流量測定装置。(2) A straight pipe through which gas flows in one direction,
A powder supply pipe that is attached at a substantially right angle to the straight pipe and that supplies the powder; and a light amount measuring element that is provided upstream of the intersection of the gas and the powder and irradiates the powder with light. A powder flow rate measuring device characterized in that the powder is blown away by the gas flow and the powder flow rate is measured from the amount of light reflected by the powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8909586A JPS62245112A (en) | 1986-04-17 | 1986-04-17 | Method and apparatus for measuring flow amount of powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8909586A JPS62245112A (en) | 1986-04-17 | 1986-04-17 | Method and apparatus for measuring flow amount of powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62245112A true JPS62245112A (en) | 1987-10-26 |
Family
ID=13961319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8909586A Pending JPS62245112A (en) | 1986-04-17 | 1986-04-17 | Method and apparatus for measuring flow amount of powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62245112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012091911A (en) * | 2010-10-27 | 2012-05-17 | Sinfonia Technology Co Ltd | Conveyance apparatus |
-
1986
- 1986-04-17 JP JP8909586A patent/JPS62245112A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012091911A (en) * | 2010-10-27 | 2012-05-17 | Sinfonia Technology Co Ltd | Conveyance apparatus |
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