JPH0293502U - - Google Patents
Info
- Publication number
- JPH0293502U JPH0293502U JP192189U JP192189U JPH0293502U JP H0293502 U JPH0293502 U JP H0293502U JP 192189 U JP192189 U JP 192189U JP 192189 U JP192189 U JP 192189U JP H0293502 U JPH0293502 U JP H0293502U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- positioner
- flapper
- feedback
- processing unit
- 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
- 230000008713 feedback mechanism Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図ａおよびｂは本考案に係るポジシヨナの
ゼロ・スパン調整装置の要部を示す縦断面図と横
断面図、第２図は同じく本考案におけるゼロ・ス
パン調整装置のストツパ部分を示す斜視図、第３
図はポジシヨナのゼロ・スパン調整装置の全体を
示す断面図、第４図はブロツク図、第５図は他の
実施例を示す斜視図、第６図は従来のポジシヨナ
のゼロ・スパン調整装置を示す断面図である。
４…パイロツトリレー、５…バルブ、６…操作
器、１１…弁軸、１８…ケース、３２…ノズル・
ストツパ機構、３３…フイードバツク機構、３４
…中央処理装置、３５…フラツパ、３６…フイー
ドバツクレバー、３７…ポテンシヨメータ、３８
…ストツパ。
Figures 1a and b are longitudinal and cross-sectional views showing the main parts of the zero-span adjustment device for a positioner according to the present invention, and Figure 2 is a perspective view showing a stopper portion of the zero-span adjustment device according to the present invention. Figure, 3rd
The figure is a sectional view showing the entire zero and span adjustment device for a positioner, FIG. 4 is a block diagram, FIG. 5 is a perspective view showing another embodiment, and FIG. 6 is a diagram showing a conventional zero and span adjustment device for a positioner. FIG. 4... Pilot relay, 5... Valve, 6... Operator, 11... Valve stem, 18... Case, 32... Nozzle.
Stopper mechanism, 33... Feedback mechanism, 34
... central processing unit, 35 ... flapper, 36 ... feedback lever, 37 ... potentiometer, 38
...Stotsupa.
Claims (1)
を圧電アクチユエータからなるフラツパの揺動変
位に変換し、これをノズル・フラツパ機構によつ
て検出し、このノズル・フラツパ機構で検出した
ノズル背圧をパイロツトリレーによつて増幅し、
バルブ駆動圧力としてバルブの操作器に出力する
と共に、バルブ実動作量をフイードバツク機構を
介し電気信号として前記中央処理装置に伝達し前
記フラツパを平衝させるポジシヨナであつて、こ
のポジシヨナのフイードバツク機構を、前記バル
ブの弁軸に着脱自在に連結された回動用のフイー
ドバツクレバーと、このフイードバツクレバーに
連結されかつ前記中央処理装置に接続された弁リ
フト検出用のセンサとによつて構成し、このうち
フイードバツクレバーを回動方向の２位置に規制
するストツパを前記ポジシヨナのケースに設けた
ことを特徴とするポジシヨナのゼロ・スパン調整
装置。 The electric signal from the central processing unit that receives the input signal is converted into a swinging displacement of a flapper made of a piezoelectric actuator, which is detected by a nozzle flapper mechanism, and the nozzle back pressure detected by this nozzle flapper mechanism is used as a pilot. amplified by a relay,
A positioner that outputs valve driving pressure to a valve operating device and transmits the actual valve operating amount as an electric signal to the central processing unit via a feedback mechanism to balance the flapper, the feedback mechanism of this positioner comprising: The valve includes a rotational feedback lever detachably connected to the valve shaft of the valve, and a valve lift detection sensor connected to the feedback lever and connected to the central processing unit. . A zero/span adjustment device for a positioner, characterized in that a stopper for restricting the feedback lever to two positions in the rotational direction is provided in the case of the positioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP192189U JPH0293502U (en) | 1989-01-11 | 1989-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP192189U JPH0293502U (en) | 1989-01-11 | 1989-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293502U true JPH0293502U (en) | 1990-07-25 |
Family
ID=31202233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP192189U Pending JPH0293502U (en) | 1989-01-11 | 1989-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013130237A (en) * | 2011-12-21 | 2013-07-04 | Azbil Corp | Method and device for detecting fixation of rotary shaft of angle sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6232202B2 (en) * | 1975-06-13 | 1987-07-13 | Goodrich Co B F |
-
1989
- 1989-01-11 JP JP192189U patent/JPH0293502U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6232202B2 (en) * | 1975-06-13 | 1987-07-13 | Goodrich Co B F |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013130237A (en) * | 2011-12-21 | 2013-07-04 | Azbil Corp | Method and device for detecting fixation of rotary shaft of angle sensor |
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