JPS628488Y2 - - Google Patents
Info
- Publication number
- JPS628488Y2 JPS628488Y2 JP1982060047U JP6004782U JPS628488Y2 JP S628488 Y2 JPS628488 Y2 JP S628488Y2 JP 1982060047 U JP1982060047 U JP 1982060047U JP 6004782 U JP6004782 U JP 6004782U JP S628488 Y2 JPS628488 Y2 JP S628488Y2
- Authority
- JP
- Japan
- Prior art keywords
- elastic diaphragm
- magnet
- magnetic
- slit disk
- optical pulse
- 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
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Optical Transform (AREA)
Description
【考案の詳細な説明】
本考案は容積型流量計などの回転子からの回転
に連動する磁性スリツト円板と弾性隔膜上に設け
た磁石との磁気吸引作用による前記弾性隔膜の位
置変化を光学的に検出するようにした光パルス検
出器に関する。[Detailed description of the invention] The present invention optically detects the change in the position of the elastic diaphragm due to the magnetic attraction between a magnetic slit disk that is linked to the rotation from the rotor of a positive displacement flowmeter, and a magnet provided on the elastic diaphragm. The present invention relates to an optical pulse detector that detects optical pulses.
容積型流量計において、流量に比例したパルス
を検出するに際し、回転子に埋設した磁石により
リードスイツチを作動させるとか、或いは同心円
上に発信パルス数に応じて切欠部または開孔部を
設けたスリツト円板を回転子からの出力軸に連結
すると共に該スリツト円板を高周波誘導磁界を断
続するとかして流量に比例したパルスを発信させ
る流量発信器が用いられている。ところで、これ
ら従来装置は駆動源に電気を用いているので、引
火性の強い流体を取扱う石油工場などで使用する
場合には防爆構造としなければならず、その結果
構成が複雑となるばかりでなく、価格的にも高価
となる欠点があつた。 In positive displacement flowmeters, when detecting pulses proportional to the flow rate, a reed switch is actuated by a magnet embedded in the rotor, or a slit with a notch or opening in a concentric circle according to the number of emitted pulses is used. A flow rate transmitter is used in which a disk is connected to an output shaft from a rotor, and a high frequency induced magnetic field is applied to the slit disk intermittently to emit a pulse proportional to the flow rate. By the way, these conventional devices use electricity as their driving source, so if they are used in oil factories that handle highly flammable fluids, they must be constructed to be explosion-proof, which not only makes the configuration complicated but also However, it also had the disadvantage of being expensive.
本考案の目的は上記の欠点を解決するにあり、
引火性の強い流体とか腐蝕性の強い流体を取扱う
場所においても安全に使用することのできる光学
式流量発信器を提供するにある。 The purpose of this invention is to solve the above drawbacks,
An object of the present invention is to provide an optical flow rate transmitter that can be safely used even in places where highly flammable or corrosive fluids are handled.
つぎに本発明の構成を図に示す一実施例に基づ
いて説明する。図において、1は容積型流量計の
回転子(図示せず)からの回転を伝える出力軸、
2は軸受、3は出力軸1に連動する磁性スリツト
円板であつて、その周縁近傍には切欠または透孔
を設けてある。4はダイヤフラムなどの弾性隔膜
で、その周縁を筐体5,6に挾んで張設してあ
る。7は磁石であつて、前記弾性隔膜の磁性スリ
ツト円板を設けた側のほぼ中央に固着してある。
8は弾性隔膜の磁石と反対側に形成した光学的反
射面であつて、その表面は鏡面仕上げとしてあ
る。9はバンドル型光フアイバである。91は投
光フアイバの端面、92は受光フアイバの端面で
あり、これら端面は前記反射面へ投光し、その反
射光を受光する適正位置に固定してある。10は
光源、11は光電素子である。 Next, the configuration of the present invention will be explained based on an embodiment shown in the drawings. In the figure, 1 is an output shaft that transmits rotation from a rotor (not shown) of a positive displacement flowmeter;
2 is a bearing, and 3 is a magnetic slit disk that is interlocked with the output shaft 1, and a cutout or a through hole is provided near the periphery of the disk. Reference numeral 4 denotes an elastic diaphragm such as a diaphragm, the periphery of which is stretched between the casings 5 and 6. Reference numeral 7 denotes a magnet, which is fixed approximately at the center of the elastic diaphragm on the side where the magnetic slit disk is provided.
Reference numeral 8 denotes an optically reflective surface formed on the opposite side of the elastic diaphragm from the magnet, and its surface is mirror-finished. 9 is a bundle type optical fiber. Reference numeral 91 designates an end face of the light emitting fiber, and 92 represents an end face of the light receiving fiber. These end faces are fixed at appropriate positions for projecting light onto the reflecting surface and receiving the reflected light. 10 is a light source, and 11 is a photoelectric element.
上記説明において、第3図に示すように弾性隔
膜4を磁性材で構成するとともに磁石7をスリツ
ト円板3に固着することにより、両者を磁気吸引
させるようにしてもよい。また、9のバンドル型
光フアイバは、91,92の投光、受光フアイバ
素線はランダム構成とした1本の束にしたもので
もよい。 In the above description, as shown in FIG. 3, the elastic diaphragm 4 may be made of a magnetic material and the magnet 7 may be fixed to the slit disk 3 so that both may be magnetically attracted. Further, the bundle type optical fiber 9 may be a single bundle in which the light emitting and light receiving fibers 91 and 92 are arranged randomly.
このような構成の本考案装置を容積型流量計に
適用した場合の動作について図を参照しながら説
明する。 The operation when the device of the present invention having such a configuration is applied to a positive displacement flowmeter will be described with reference to the drawings.
被測定流体が流れる配管に取付けた流量計の回
転子が回転すると、その回転は出力軸1に伝達さ
れる。出力軸1には磁性スリツト円板3が設けら
れているので、回転子の回転に伴なつて切欠また
は透孔の有無、即ち磁性体の有無が繰り返され
る。この磁性体と磁石との磁気吸引の繰り返しに
対応して弾性隔膜上に形成した反射面の位置が変
化する。したがつて流量に比例して光の入射、反
射が繰り返され、この変化が光電素子によつて光
パルスとして検出される。 When the rotor of the flowmeter attached to the pipe through which the fluid to be measured rotates, the rotation is transmitted to the output shaft 1. Since the output shaft 1 is provided with a magnetic slit disk 3, as the rotor rotates, the presence or absence of notches or through holes, that is, the presence or absence of magnetic material, is repeated. The position of the reflective surface formed on the elastic diaphragm changes in response to repeated magnetic attraction between the magnetic body and the magnet. Therefore, incidence and reflection of light are repeated in proportion to the flow rate, and this change is detected as a light pulse by a photoelectric element.
上述したように、回転検出に電気を用いていな
いので、可燃性ガス、石油プラントあるいは炭鉱
のように電気放電によつて爆発の恐れある場所で
の計測に従来の防爆型検出器よりも簡便にかつ安
全に流量の検出ができる。 As mentioned above, since electricity is not used to detect rotation, it is easier than conventional explosion-proof detectors to take measurements in places where there is a risk of explosion due to electrical discharge, such as flammable gas, oil plants, or coal mines. And the flow rate can be detected safely.
第1図は本考案の要部構成を示す一実施例、第
2図は第1図のスリツト円板のA−A断面図、第
3図は本考案の他の実施例である。
3……スリツト円板、4……弾性隔膜、7……
磁石、9……バンドル型光フアイバ。
FIG. 1 is an embodiment showing the main structure of the present invention, FIG. 2 is a sectional view taken along the line AA of the slit disk of FIG. 1, and FIG. 3 is another embodiment of the present invention. 3... Slit disk, 4... Elastic diaphragm, 7...
Magnet, 9... bundle type optical fiber.
Claims (1)
膜の一側に磁石を固着すると共に該弾性隔膜の
他側に鏡面仕上げした反射面を形成し、前記磁
石にて磁気吸引される位置にて回転自在に軸支
された磁性スリツト円板を対向配置し、前記反
射面へ光源を投光し反射光を受光するバンドル
型光フアイバを配設し、前記磁性スリツト円板
の回転に伴なう磁気吸引による弾性隔膜上の鏡
面の位置変化を上記バンドル型光フアイバによ
り光パルスとして検出するようにしたことを特
徴とする光パルス検出器。 (2) 弾性隔膜を磁性材で構成すると共にスリツト
円板に磁石を固着したことを特徴とする実用新
案登録請求の範囲第(1)項記載の光パルス検出
器。[Claims for Utility Model Registration] (1) The periphery of an elastic diaphragm is sandwiched between housings, a magnet is fixed to one side of the elastic diaphragm, and a reflective surface with a mirror finish is formed on the other side of the elastic diaphragm. , magnetic slit disks that are rotatably supported in a position that is magnetically attracted by the magnet are arranged opposite each other, and a bundle type optical fiber that projects a light source onto the reflective surface and receives the reflected light is provided. An optical pulse detector, characterized in that a change in the position of a mirror surface on an elastic diaphragm due to magnetic attraction caused by rotation of the magnetic slit disk is detected as an optical pulse by the bundle type optical fiber. (2) The optical pulse detector according to claim (1) of the utility model registration, characterized in that the elastic diaphragm is made of a magnetic material and a magnet is fixed to the slit disk.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6004782U JPS58162018U (en) | 1982-04-23 | 1982-04-23 | optical pulse detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6004782U JPS58162018U (en) | 1982-04-23 | 1982-04-23 | optical pulse detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58162018U JPS58162018U (en) | 1983-10-28 |
JPS628488Y2 true JPS628488Y2 (en) | 1987-02-27 |
Family
ID=30070311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6004782U Granted JPS58162018U (en) | 1982-04-23 | 1982-04-23 | optical pulse detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58162018U (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56104216A (en) * | 1980-01-25 | 1981-08-19 | Moritetsukusu:Kk | Converter of displacement, pressure or vibration |
JPS5733357A (en) * | 1980-08-08 | 1982-02-23 | Sumitomo Electric Ind Ltd | Vehicle speed sensor |
JPS5733356A (en) * | 1980-08-08 | 1982-02-23 | Sumitomo Electric Ind Ltd | Vehicle speed sensor |
-
1982
- 1982-04-23 JP JP6004782U patent/JPS58162018U/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56104216A (en) * | 1980-01-25 | 1981-08-19 | Moritetsukusu:Kk | Converter of displacement, pressure or vibration |
JPS5733357A (en) * | 1980-08-08 | 1982-02-23 | Sumitomo Electric Ind Ltd | Vehicle speed sensor |
JPS5733356A (en) * | 1980-08-08 | 1982-02-23 | Sumitomo Electric Ind Ltd | Vehicle speed sensor |
Also Published As
Publication number | Publication date |
---|---|
JPS58162018U (en) | 1983-10-28 |
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