JPS5514429A - Coaling quantity control system at boiler - Google Patents
Coaling quantity control system at boilerInfo
- Publication number
- JPS5514429A JPS5514429A JP8611178A JP8611178A JPS5514429A JP S5514429 A JPS5514429 A JP S5514429A JP 8611178 A JP8611178 A JP 8611178A JP 8611178 A JP8611178 A JP 8611178A JP S5514429 A JPS5514429 A JP S5514429A
- Authority
- JP
- Japan
- Prior art keywords
- value
- boiler
- coaling
- signal
- pulverizer
- 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
Abstract
PURPOSE: To prevent pressure fluctuation of main steam by maintaining the coaling quantity of all of the pulverizers into the boiler at a prescribed value at all times, in the system where coaling quantity from pulverizers into the boiler is controlled.
CONSTITUTION: In order to maintain the pressure of main steam at a constant value after the operation of coal feeder A is started, value (a) plus value (b) is substracted from value (c) during time t4; where value (c) is an amount of coal supplied from feeder A to pulverizer A' during time t3, value (b) is an amount of coal supplied from feeder A to pulverizer A' during time t4, and value (c) is an amount of coal fed to boiler from pulverizer B'WF' which have already started operation. In order to satisfy the above relation, signal d is generated setting t2, t4 and Y rpm, where secular change of pulverizer A' is taken into consideration. Signal d is supplied to the feeder A for starting operation, then, at the same time, the same signal and signal b which is the rotation instruction signal for the feeders BWF are sent to each of the feeders BWF thru the adder H and the controller PI. During the time t4, revolutions of the feeders BWF are reduced and subsequently, coaling quantity of all of the pulverizers into the boiler is maintained at a prescribed value.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8611178A JPS5514429A (en) | 1978-07-17 | 1978-07-17 | Coaling quantity control system at boiler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8611178A JPS5514429A (en) | 1978-07-17 | 1978-07-17 | Coaling quantity control system at boiler |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5514429A true JPS5514429A (en) | 1980-01-31 |
Family
ID=13877582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8611178A Pending JPS5514429A (en) | 1978-07-17 | 1978-07-17 | Coaling quantity control system at boiler |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5514429A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE32284E (en) * | 1976-01-15 | 1986-11-11 | Xerox Corporation | Document storage and transport apparatus |
US5430536A (en) * | 1993-10-12 | 1995-07-04 | Xerox Corporation | Automatic duplex and simplex document handler for electronic input |
-
1978
- 1978-07-17 JP JP8611178A patent/JPS5514429A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE32284E (en) * | 1976-01-15 | 1986-11-11 | Xerox Corporation | Document storage and transport apparatus |
US5430536A (en) * | 1993-10-12 | 1995-07-04 | Xerox Corporation | Automatic duplex and simplex document handler for electronic input |
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