JPS6151645B2 - - Google Patents
Info
- Publication number
- JPS6151645B2 JPS6151645B2 JP7749679A JP7749679A JPS6151645B2 JP S6151645 B2 JPS6151645 B2 JP S6151645B2 JP 7749679 A JP7749679 A JP 7749679A JP 7749679 A JP7749679 A JP 7749679A JP S6151645 B2 JPS6151645 B2 JP S6151645B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- accumulator
- steam
- control valve
- pressure
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】
本発明は熱水タービンの変圧運転方法の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a variable pressure operating method for a hot water turbine.
従来、熱水タービン１（第１図）を部分負荷運
転する場合に熱水加減弁２の絞り運転をすると熱
水入口管３内での気液２相分離や熱水加減弁直後
の熱水入口管３の内面のエロージヨンを起し、効
率ならびに機械の寿命の点から好ましくない。 Conventionally, when the hot water turbine 1 (Fig. 1) is operated under partial load, when the hot water control valve 2 is throttled, gas-liquid two-phase separation occurs in the hot water inlet pipe 3, and hot water immediately after the hot water control valve is operated. This causes erosion of the inner surface of the inlet pipe 3, which is undesirable from the viewpoint of efficiency and machine life.
このため熱水タービンの前部にアキユムレータ
４を置き、熱水タービン１に２相流ノズルと蒸気
加減弁５を設けて、蒸気加減弁５によりアキユム
レータ４内の圧力を負荷に応じて変える変圧運転
方法が提案されている。しかしこの方法にはつぎ
の欠点がある。 For this purpose, an accumulator 4 is placed at the front of the hot water turbine, and a two-phase flow nozzle and a steam control valve 5 are installed in the hot water turbine 1, and the steam control valve 5 changes the pressure inside the accumulator 4 according to the load. A method is proposed. However, this method has the following drawbacks.
(1) 熱水流量とアキユムレータ圧力とを簡単な関
数近似（第１図右上に略示）している。(1) The hot water flow rate and the accumulator pressure are approximated by a simple function (schematically shown in the upper right of Figure 1).
(2) 熱水流量の計測には誤差がともなう。(2) Measurement of hot water flow rate involves errors.
(3) 熱水温度が変つた場合には特性がずれる。(3) Characteristics shift when hot water temperature changes.
このため微小な高周波の変動は熱水加減弁全開
位置付近で熱水加減弁をアキユムレータレベルに
よつて開閉する必要があり定圧運転の欠点が残
る。 For this reason, small high-frequency fluctuations require opening and closing of the hot water control valve depending on the accumulator level near the fully open position of the hot water control valve, which remains a drawback of constant pressure operation.
また熱水温度が定格から外れると特性がずれる
ため安定した運転が出来なくなる。 Furthermore, if the hot water temperature deviates from the rated range, the characteristics will deviate, making stable operation impossible.
本発明は従来提案の上述の欠点を改善し、変圧
運転の制御装置を単純化して精度ならびに応答性
を向上することを目的とする。 The present invention aims to improve the above-mentioned drawbacks of the conventional proposals, simplify the control device for variable voltage operation, and improve accuracy and responsiveness.
すなわち本発明よれば、熱水加減弁は全開口に
固定してアキユムレータのレベルを蒸気加減弁で
制御するものである。これによりアキユムレータ
圧力は発生熱水量に対応する最適変圧運転圧力に
自動的に制御されるのである。 That is, according to the present invention, the hot water control valve is fixed at its full opening, and the level of the accumulator is controlled by the steam control valve. As a result, the accumulator pressure is automatically controlled to the optimum variable pressure operating pressure corresponding to the amount of hot water generated.
以下本発明を添付図面第２図に例示したその好
適な実施例についての詳述である。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to a preferred embodiment thereof, which is illustrated in FIG. 2 of the accompanying drawings.
第２図に図示のような熱水発生器８の出口側に
は熱水温度制御弁７を設け、その後にアキユムレ
ータ４を設けてある。このアキユムレータ４の下
部の熱水出口には熱水入口管３を接続し、熱水弁
３′、手動式の熱水加減弁２′を経て熱水タービン
１の蒸気アンスト式ノズルの熱水側入口に至る。
またアキユムレータ４の上部の蒸気出口には蒸気
入口管６を接続し、蒸気止弁６′、蒸気加傾弁５
を経て上記熱水タービン１のアシスト式蒸気ノズ
ルの蒸気側入口に至る。蒸気加減弁５はアキユム
レータ４のレベル検出器LCに接続される。すな
わち蒸気加減弁５によつてアキユムレータ４のレ
ベル制御を実施するのである。なお、参照番号９
はフラツシユ蒸気タービン、１０は発電機、１１
は復水器、１２はフラツシユである。 A hot water temperature control valve 7 is provided on the outlet side of the hot water generator 8 as shown in FIG. 2, followed by an accumulator 4. A hot water inlet pipe 3 is connected to the hot water outlet at the bottom of the accumulator 4, and the hot water is passed through a hot water valve 3' and a manual hot water control valve 2' to the hot water side of the steam unloaded nozzle of the hot water turbine 1. Reach the entrance.
In addition, a steam inlet pipe 6 is connected to the steam outlet at the upper part of the accumulator 4, and a steam stop valve 6' and a steam inclining valve 5 are connected.
and then reaches the steam side inlet of the assisted steam nozzle of the hot water turbine 1. The steam control valve 5 is connected to the level detector LC of the accumulator 4. That is, the level of the accumulator 4 is controlled by the steam control valve 5. In addition, reference number 9
is a flash steam turbine, 10 is a generator, 11
is a condenser, and 12 is a flash.
この作用について詳述すれば次のとおりであ
る。 This effect will be explained in detail as follows.
熱水発生器８出口熱水量（温度、圧力を一定と
仮定する）をＧt、アキユムレータ４内部の圧力
をｐ、熱水タービン１入口熱水量をＧw、熱水タ
ービン１入口蒸気量をＧsとすると、熱水加減弁
２′の開度が一定のとき、Ｇtとｐはつぎのように
１対１の対応をする。 The amount of hot water at the outlet of the hot water generator 8 (assuming constant temperature and pressure) is G t , the pressure inside the accumulator 4 is p, the amount of hot water at the inlet of the hot water turbine 1 is G w , the amount of steam at the inlet of the hot water turbine 1 is G Assuming that s , when the opening degree of the hot water control valve 2' is constant, Gt and p have a one-to-one correspondence as follows.
Ｇs／Ｇt＝ｘ ｘはアキユムレータ４にてフラ
ツシユして発生する蒸気の割合
ｘ＝f1（ｐ） f1（ｐ）は蒸気の性質によつて
決まる関数
ＧW＝f2（ｐ） f2（ｐ）は熱水加減弁２′の開
度によつて決まる関数
Ｇt＝Ｇs＋Ｇw
これより Ｇt＝xGt＋f2（ｐ）
＝f1（ｐ）Ｇt＋f2（ｐ）
∴ Ｇt＝ｆ２（ｐ）／１−ｆ１（ｐ）
すなわち熱水加減弁２′の開度を一定に保ち、
蒸気加減弁５にてアキユムレータ４内部の圧力を
発生熱水量に対応する値に保つことによつて熱水
タービン１の変圧運転ができる。 G s /G t = x x is the proportion of steam generated by flashing in the accumulator 4 x = f 1 (p) f 1 (p) is a function determined by the properties of the steam G W = f 2 (p) f 2 (p) is a function determined by the opening degree of the hot water control valve 2' G t = G s + G w From this, G t = xG t + f 2 (p) = f 1 (p) G t + f 2 ( p) ∴ G t = f 2 (p)/1-f 1 (p) In other words, keeping the opening degree of the hot water control valve 2' constant,
By maintaining the pressure inside the accumulator 4 at a value corresponding to the amount of generated hot water using the steam control valve 5, variable pressure operation of the hot water turbine 1 is possible.
さて、上記の圧力にアキユムレータ４内圧力を
制御すれば発生熱水量Ｇtに対応したアキユムレ
ータ４圧力ｐに応じて蒸気量Ｇsが発生し、蒸気
加減弁５を通じて熱水タービン１に流入する。一
方残つた熱水量Ｇwはそのときアキユムレータ４
圧力ｐと熱水加減弁２′開度にて過下足なく熱水
タービン１に流入する。すなわち上記の圧力にア
キユムレータ４圧力を制御すればアキユムレータ
４内の熱水レベルは一定で変化しない。これより
上記関数によつて熱水量封測値から間接的に与え
られるアキユムレータ４圧力設定値を用いて蒸気
加減弁５によつてアキユムレータ４圧力を制御す
るよりは、直接蒸気加減弁５を用いてアキユムレ
ータ４レベルを制御する方が制御の最終目的に合
つておりより単純で直接的である。 Now, if the internal pressure of the accumulator 4 is controlled to the above-mentioned pressure, the amount of steam G s will be generated according to the pressure p of the accumulator 4 corresponding to the amount of generated hot water G t , and will flow into the hot water turbine 1 through the steam control valve 5 . On the other hand, the remaining amount of hot water G w is then
At the pressure p and the opening degree of the hot water control valve 2', the hot water flows into the hot water turbine 1 without too much or too little. That is, if the pressure of the accumulator 4 is controlled to the above-mentioned pressure, the hot water level in the accumulator 4 is constant and does not change. Therefore, rather than controlling the accumulator 4 pressure using the steam regulator 5 using the accumulator 4 pressure set value that is indirectly given from the hot water amount seal measurement value by the above function, it is possible to directly use the steam regulator 5. Controlling the accumulator 4 level is simpler and more direct as it meets the ultimate control objective.
このように、本発明によれば、変圧運転の制御
装置が簡単になる（圧力設定値関数発生器が不
要）。また熱水温度の変化などの外乱があつても
正確な制御が可能である。さらに制御の応答性が
良いという著しい利点が得られるのである。 Thus, according to the present invention, the control device for variable voltage operation is simplified (no pressure set value function generator is required). Furthermore, accurate control is possible even in the presence of disturbances such as changes in hot water temperature. Furthermore, the significant advantage of good control responsiveness is obtained.
第１図は従来提案の熱水タービンの変圧運転方
法を説明する系統図、第２図は本発明方法の同様
な図である。
１……熱水タービン、２，２′……熱水加減
弁、３……熱水入口管、３′……熱水止弁、４…
…アキユムレータ、５……蒸気加減弁、６……蒸
気入口管、７……温度制御弁、８……熱水発生
器、９……フラツシユ蒸気タービン、１０……発
電機、１１……復水器、１２………フラツシユ。
FIG. 1 is a system diagram illustrating a conventional method of variable pressure operation of a hot water turbine, and FIG. 2 is a similar diagram of the method of the present invention. 1...Hot water turbine, 2, 2'...Hot water control valve, 3...Hot water inlet pipe, 3'...Hot water stop valve, 4...
... Accumulator, 5 ... Steam control valve, 6 ... Steam inlet pipe, 7 ... Temperature control valve, 8 ... Hot water generator, 9 ... Flash steam turbine, 10 ... Generator, 11 ... Condensate Vessel, 12...Flatsushiyu.
Claims (1)
ータのレベルを蒸気加減弁によつて制御すること
により自動的に発生熱水量に応じたアキユムレー
タ圧力制御を行なうことを特徴とする、熱水ター
ビンの変圧運転方法。1. A method for variable pressure operation of a hot water turbine, which is characterized by automatically controlling the pressure of the accumulator according to the amount of generated hot water by controlling the level of the accumulator using a steam control valve during partial load operation of the hot water turbine. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749679A JPS562414A (en) | 1979-06-21 | 1979-06-21 | Variable pressure driving system for hot water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749679A JPS562414A (en) | 1979-06-21 | 1979-06-21 | Variable pressure driving system for hot water turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS562414A JPS562414A (en) | 1981-01-12 |
| JPS6151645B2 true JPS6151645B2 (en) | 1986-11-10 |
Family
ID=13635576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7749679A Granted JPS562414A (en) | 1979-06-21 | 1979-06-21 | Variable pressure driving system for hot water turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS562414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015518935A (en) * | 2012-05-24 | 2015-07-06 | ブルース アイ． ベン | Pressure power unit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088806A (en) * | 1983-10-21 | 1985-05-18 | Mitsui Eng & Shipbuild Co Ltd | Waste heat recoverer for internal-combustion engine |
| JPS60187704A (en) * | 1984-03-07 | 1985-09-25 | Mitsubishi Heavy Ind Ltd | Hot water power generation plant |
-
1979
- 1979-06-21 JP JP7749679A patent/JPS562414A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015518935A (en) * | 2012-05-24 | 2015-07-06 | ブルース アイ． ベン | Pressure power unit |
| JP2015522740A (en) * | 2012-05-24 | 2015-08-06 | ブルース アイ． ベン | Pressure power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS562414A (en) | 1981-01-12 |
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