JPS5666493A - Rotor blade controlling device for rotor blade control type axial-flow fan - Google Patents
Rotor blade controlling device for rotor blade control type axial-flow fanInfo
- Publication number
- JPS5666493A JPS5666493A JP14132579A JP14132579A JPS5666493A JP S5666493 A JPS5666493 A JP S5666493A JP 14132579 A JP14132579 A JP 14132579A JP 14132579 A JP14132579 A JP 14132579A JP S5666493 A JPS5666493 A JP S5666493A
- Authority
- JP
- Japan
- Prior art keywords
- air amount
- rotor blade
- fluctuation
- flow fan
- control type
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
PURPOSE: To provide the rotor blade controlling system for the rotor blade control type axial-flow fan, which is provided with a dead time generating means in its hydraulic circuit for operating the rotor blades, so that it may not respond to short-period fluctuation of air amount but it is operated to move the blades in case that fluctuation in the air amount, having periods longer than a predetermined time length, is caused in controlling the amount of air to be supplied to a thermal power plant or the like.
CONSTITUTION: An actually measured air amount (q) at the time is compared with an instructed air amount Q in a controller 17 and the output signal of the controller 17 is given to an actuator 13. Here, if fluctuation is caused in the actually measured air amount (q) and resultantly an arm of actuator 13 is moved vertically at short periods although the average air amount indicates correctly the instructed air amount Q, it only causes lateral movement of a piston 22 of a dead time generating means 20. Therefore, it is prevented that hydraulic pressure is acted to a control cylinder 6.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14132579A JPS608357B2 (en) | 1979-11-02 | 1979-11-02 | Moving blade control device for variable moving blade axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14132579A JPS608357B2 (en) | 1979-11-02 | 1979-11-02 | Moving blade control device for variable moving blade axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5666493A true JPS5666493A (en) | 1981-06-04 |
| JPS608357B2 JPS608357B2 (en) | 1985-03-02 |
Family
ID=15289296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14132579A Expired JPS608357B2 (en) | 1979-11-02 | 1979-11-02 | Moving blade control device for variable moving blade axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608357B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541924A (en) * | 2013-10-24 | 2014-01-29 | 浙江理工大学 | Automatic test system of axial flow fans |
| CN113339354A (en) * | 2021-08-02 | 2021-09-03 | 中国电建集团透平科技有限公司 | Moving blade adjusting device of axial flow fan |
-
1979
- 1979-11-02 JP JP14132579A patent/JPS608357B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541924A (en) * | 2013-10-24 | 2014-01-29 | 浙江理工大学 | Automatic test system of axial flow fans |
| CN113339354A (en) * | 2021-08-02 | 2021-09-03 | 中国电建集团透平科技有限公司 | Moving blade adjusting device of axial flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS608357B2 (en) | 1985-03-02 |
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