JPH0510931Y2 - - Google Patents
Info
- Publication number
- JPH0510931Y2 JPH0510931Y2 JP1987193591U JP19359187U JPH0510931Y2 JP H0510931 Y2 JPH0510931 Y2 JP H0510931Y2 JP 1987193591 U JP1987193591 U JP 1987193591U JP 19359187 U JP19359187 U JP 19359187U JP H0510931 Y2 JPH0510931 Y2 JP H0510931Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotation
- detected
- reflector
- plate provided
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
- Testing Of Balance (AREA)
Description
【考案の詳細な説明】
〔考案の利用分野〕
本考案は遠心分離機のように回転速度制御装置
を有する機器のロータ偏心回転検出を識別する装
置に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for identifying the detection of eccentric rotation of a rotor of a device having a rotation speed control device, such as a centrifugal separator.
従来の遠心分離機に装備されているロータ1の
偏心回転機構は第1図に示すように磁気センサ1
5をモータ軸の近傍におき、偏心によりシヤフト
が磁気センサ15に近づいたことを磁気に変化量
で検出し一定量以上になると検出する。この方法
は精度が悪く、シヤフトのわずかな偏心量を読む
には難かしい。
The eccentric rotation mechanism of the rotor 1 installed in a conventional centrifuge is equipped with a magnetic sensor 1 as shown in Fig. 1.
5 is placed near the motor shaft, and the fact that the shaft approaches the magnetic sensor 15 due to eccentricity is detected by the amount of change in magnetism, and when the amount exceeds a certain value, it is detected. This method has poor accuracy and is difficult to read the slight eccentricity of the shaft.
又、ロータ1の回転検出は1回転2パルス発生
する光学センサ16にて検出している。 The rotation of the rotor 1 is detected by an optical sensor 16 that generates two pulses per rotation.
ロータ1の偏心回転の検出ロータ1の回転を検
出するのを、別々のセンサで検出しているためコ
スト高となつている。尚、13と17はシユミツ
ト回路、14はCPUである。 Detection of eccentric rotation of the rotor 1 Since the rotation of the rotor 1 is detected using separate sensors, the cost is high. Note that 13 and 17 are Schmitt circuits, and 14 is a CPU.
〔考案の目的〕
本考案はロータの偏心回転検出をロータに実装
した菱形反射板を使つて光学的に検出し精度を高
めることにある。[Purpose of the invention] The purpose of the invention is to optically detect the eccentric rotation of the rotor using a diamond-shaped reflector mounted on the rotor to improve accuracy.
本考案は、ロータに菱形反射板を実装し、これ
を光学的に検出する機構を付加する。ロータの回
転数と反射板を通過する時間に相関があることに
着目し、ロータが偏心回転すると通過時間が変化
することにより偏心回転を検出するように工夫し
たものである。
The present invention mounts a diamond-shaped reflector on the rotor and adds a mechanism to optically detect it. Focusing on the fact that there is a correlation between the number of rotations of the rotor and the time it takes to pass through the reflector, this device is devised to detect eccentric rotation by changing the passing time when the rotor rotates eccentrically.
本考案を第2図〜第5図の実施で説明する。 The invention will be explained with reference to FIGS. 2-5.
菱形反射板3はロータの中心から距離rの位置
に取付られており、対辺の長さは各々l1,l2であ
る。 The rhombic reflecting plate 3 is mounted at a distance r from the center of the rotor, and the lengths of opposite sides are l 1 and l 2 , respectively.
光学センサ4で検出する菱形反射板からの信号
は、受信回路5にて波形整形し、カウンタ6を通
してCPU9に信号が送られる。 The signal from the rhombic reflector detected by the optical sensor 4 is waveform-shaped by the receiving circuit 5, and the signal is sent to the CPU 9 through the counter 6.
ロータ1がモータ2の駆動によりNrpmで回転
していると、ロータが偏心運動のないときは光学
センサ4は菱形反射板3の中央l1の長さ分の反射
光を検出している。検出時間t1は、
t1=l1/πr×60/N秒である。 When the rotor 1 is rotating at Nrpm driven by the motor 2, the optical sensor 4 detects reflected light corresponding to the length of the center l1 of the rhombic reflector plate 3 when the rotor is not eccentrically moving. The detection time t 1 is t 1 =l 1 /πr×60/N seconds.
この時間t1は、カウンタ6に入るクロツクによ
り計数される。今、ロータ1が負荷のアンバラン
スにより偏心運動を行うと、光学センサ4の検出
位置は菱形反射板の中央l1の位置から左右に偏心
量分ずれる。(第4図参照)。すなわち、光の検出
距離がl1からl1′になり検出時間t1′はt1′=l′/πr
・
60/N秒(t1>t1′)となる。 This time t 1 is counted by a clock entering counter 6. Now, when the rotor 1 performs an eccentric movement due to load imbalance, the detection position of the optical sensor 4 shifts from the center l1 position of the rhombic reflector to the left and right by the amount of eccentricity. (See Figure 4). In other words, the detection distance of light changes from l 1 to l 1 ′, and the detection time t 1 ′ becomes t 1 ′=l′/πr
・60/N seconds (t 1 > t 1 ').
この|t1−t1′|をCPU9にて計数し、一定の
値以上になつたときに異常信号を出力I/Fポー
ト11より出力し、異常表示LEDを点灯させる
ことによりロータのアンバランスによる回転異常
を検出できる。 The CPU 9 counts this |t 1 -t 1 ′|, and when it exceeds a certain value, an abnormality signal is output from the output I/F port 11, and the abnormality display LED is turned on to detect rotor imbalance. It is possible to detect rotational abnormalities due to
また、ロータの回転数検出はワンシヨツト7お
よびカウンタ8を介してCPU9にて検出できる。
反射板3からの信号は1回転に1回発生するため
受信回路5の立上りでワンシヨツト7が駆動し、
カウンタ8、CPU9を周期を計数することによ
りロータの回転数を計数できる。A/D変換10
はロータ回転数設定値を検出するものである。 Further, the rotational speed of the rotor can be detected by the CPU 9 via the one shot 7 and the counter 8.
Since the signal from the reflector plate 3 is generated once per rotation, the one shot 7 is driven at the rising edge of the receiving circuit 5.
By counting the cycles of the counter 8 and CPU 9, the number of rotations of the rotor can be counted. A/D conversion 10
is for detecting the rotor rotation speed setting value.
尚、菱形反射板の代りに、円板等でも計数時間
に差が出るものであればよい。 Note that a disc or the like may be used instead of the diamond-shaped reflector as long as it makes a difference in the counting time.
ロータのアンバランス運転によるロータの偏心
運動が検出でき、アンバランス運転によるロータ
シヤフト折損あるいはロータ離脱を防ぐことが出
来ると共に、ロータ回転検出とアンバランス運転
検出を1つのセンサで行うことができる。
Eccentric movement of the rotor due to unbalanced operation of the rotor can be detected, rotor shaft breakage or rotor separation due to unbalanced operation can be prevented, and rotor rotation and unbalanced operation can be detected with a single sensor.
第1図は従来技術のロータ部を示した正面図、
第2図本考案装置の正面図、第3図は同第2図に
おけるA−A矢視図、第4図は同回路図、第5図
は同光学センサの検出位置を示す説明図である。
1はロータ、2はモータ、3は反射板、4は光
学センサである。
Figure 1 is a front view showing the rotor section of the conventional technology;
Fig. 2 is a front view of the device of the present invention, Fig. 3 is a view taken along the line A-A in Fig. 2, Fig. 4 is a circuit diagram of the same, and Fig. 5 is an explanatory diagram showing the detection position of the optical sensor. . 1 is a rotor, 2 is a motor, 3 is a reflector, and 4 is an optical sensor.
Claims (1)
タに設けられ、該ロータの回転軸から放射方向の
距離に応じて放射方向と直角方向の反射長さが変
化する化学的反射板と、この反射板からの反射光
を検出する光学検出器並びに回路とを具備し、ロ
ータの回転検出およびアンバランスによる偏心回
転を検出する機能を具備したことを特徴とする遠
心分離器のロータ回転検出装置。 A rotor rotationally driven by a motor, a chemical reflection plate provided on the rotor and having a reflection length in a direction perpendicular to the radial direction that changes depending on a distance in the radial direction from the rotation axis of the rotor, and a chemical reflection plate provided on the rotor. 1. A rotor rotation detection device for a centrifugal separator, comprising: an optical detector and a circuit for detecting reflected light; and a function of detecting rotor rotation and eccentric rotation due to unbalance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987193591U JPH0510931Y2 (en) | 1987-12-21 | 1987-12-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987193591U JPH0510931Y2 (en) | 1987-12-21 | 1987-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0199448U JPH0199448U (en) | 1989-07-04 |
JPH0510931Y2 true JPH0510931Y2 (en) | 1993-03-17 |
Family
ID=31484374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987193591U Expired - Lifetime JPH0510931Y2 (en) | 1987-12-21 | 1987-12-21 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0510931Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125955B2 (en) * | 1981-07-06 | 1986-06-18 | Doriru Kuipu Inc | |
JPS6243651B2 (en) * | 1979-03-21 | 1987-09-16 | Rihitaa Gedeon Begiesuzechi Giaru Aaru Teii |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6125955U (en) * | 1984-07-20 | 1986-02-15 | 日立工機株式会社 | Safety mechanism of continuous centrifuge |
JPS6243651U (en) * | 1985-08-30 | 1987-03-16 |
-
1987
- 1987-12-21 JP JP1987193591U patent/JPH0510931Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6243651B2 (en) * | 1979-03-21 | 1987-09-16 | Rihitaa Gedeon Begiesuzechi Giaru Aaru Teii | |
JPS6125955B2 (en) * | 1981-07-06 | 1986-06-18 | Doriru Kuipu Inc |
Also Published As
Publication number | Publication date |
---|---|
JPH0199448U (en) | 1989-07-04 |
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