JPH0314505U - - Google Patents
Info
- Publication number
- JPH0314505U JPH0314505U JP6840789U JP6840789U JPH0314505U JP H0314505 U JPH0314505 U JP H0314505U JP 6840789 U JP6840789 U JP 6840789U JP 6840789 U JP6840789 U JP 6840789U JP H0314505 U JPH0314505 U JP H0314505U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- inputs
- outputs
- control circuit
- adder
- 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
- 239000000446 fuel Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本発明の実施例に係る変圧・貫流ボイ
ラの圧力制御装置の回路図、第２図は、従来の変
圧・貫流ボイラの圧力制御装置の回路図である。
１……発熱量指令（ＭＷＤ）、２，５，６，２
２……関数発生器、３，１１……圧力調節計、４
，８……加算器、７……高信号選択器、１０……
実際の圧力、１２……制限回路、１３……最低流
量ＳＧ、１４……水燃比上限到達検出回路、２１
……比較器、ａ……発電量指令、ｂ……ボイラ入
力指令値、ｃ……主蒸気圧力偏差信号、ｄ……ウ
エツト運転中の圧力調節信号。
FIG. 1 is a circuit diagram of a pressure control device for a variable pressure once-through boiler according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional pressure control device for a variable pressure once-through boiler. 1... Calorific value command (MWD), 2, 5, 6, 2
2...Function generator, 3, 11...Pressure controller, 4
, 8... Adder, 7... High signal selector, 10...
Actual pressure, 12... Limiting circuit, 13... Minimum flow rate SG, 14... Water-fuel ratio upper limit reaching detection circuit, 21
... Comparator, a ... Power generation command, b ... Boiler input command value, c ... Main steam pressure deviation signal, d ... Pressure adjustment signal during wet operation.
Claims (1)
領域における圧力制御回路Ｄを具備するボイラの
圧力制御装置において、 前記ウエツト領域における制御回路Ｗは制限回
路１２と水燃比上限到達検出回路１４を具備し、 前記制限回路１２は主蒸気圧力偏差△ＰＴを圧
力調節計１１とスイツチＢを介して入力するとと
もに関数発生器２２を介してボイラ入力指令値ｂ
を入力し、加算器８に信号ｄを出力し、 前記水燃比上限到達検出回路１４は関数発生器
２２の出力ｘと圧力調節計１１の出力ｙを入力し
、ドライ領域における圧力制御回路Ｄのスイツチ
Ａへ作動信号を出力し、 前記ドライ領域における圧力制御回路Ｄは比較
比２１と圧力調節計３と加算器４を具備し、 前記比較器２１は関数発生器２を介して発電量
指令ａを入力するとともに実際の圧力ＰＴに対応
する信号を入力し、 前記圧力調節器３は比較器２１からの出力ｃを
入力し、スイツチＡを介して加算器４に出力し、 前記加算器４はスイツチＡを介して圧力調節器
３からの信号を入力するとともに発電量指令ａを
入力し、ボイラ入力指令値ｂを出力し、 前記スイツチＡは水燃比上限到達検出回路１４
からの信号△Ｌによつても作動し、ドライ領域に
おいてのみ使用していた圧力制御回路Ｄをウエツ
ト領域の運転中に水燃比信号が上限に達した場合
にも作動させ、発生蒸気量を増加させるとともに
圧力の上昇を助長させることを特徴とする変圧・
貫流ボイラの圧力制御装置。[Claims for Utility Model Registration] In a boiler pressure control device comprising a pressure control circuit W in a wet region and a pressure control circuit D in a dry region, the control circuit W in the wet region has a limit circuit 12 and a water-fuel ratio upper limit detection circuit. The limiting circuit 12 inputs the main steam pressure deviation △PT via the pressure regulator 11 and switch B, and also inputs the boiler input command value b via the function generator 22.
and outputs a signal d to the adder 8. The water-fuel ratio upper limit reaching detection circuit 14 inputs the output x of the function generator 22 and the output y of the pressure regulator 11, and outputs the signal d to the adder 8. The pressure control circuit D in the dry region is equipped with a comparison ratio 21, a pressure regulator 3, and an adder 4, and the comparator 21 outputs a power generation amount command a through a function generator 2. and a signal corresponding to the actual pressure PT, the pressure regulator 3 inputs the output c from the comparator 21, and outputs it to the adder 4 via switch A; The switch A inputs the signal from the pressure regulator 3 through the switch A, inputs the power generation command a, and outputs the boiler input command value b.
The pressure control circuit D, which was used only in the dry region, is also activated when the water-fuel ratio signal reaches the upper limit during operation in the wet region, increasing the amount of steam generated. Transforming pressure, characterized by increasing pressure and promoting pressure rise
Pressure control device for once-through boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6840789U JPH0314505U (en) | 1989-06-12 | 1989-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6840789U JPH0314505U (en) | 1989-06-12 | 1989-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314505U true JPH0314505U (en) | 1991-02-14 |
Family
ID=31602822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6840789U Pending JPH0314505U (en) | 1989-06-12 | 1989-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187967A (en) * | 1983-03-23 | 1984-10-25 | 株式会社ブリヂストン | Sound blocking double sound structure |
-
1989
- 1989-06-12 JP JP6840789U patent/JPH0314505U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187967A (en) * | 1983-03-23 | 1984-10-25 | 株式会社ブリヂストン | Sound blocking double sound structure |
| JPH0437221B2 (en) * | 1983-03-23 | 1992-06-18 | Bridgestone Corp |
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