JPS6119902A - Steam turbine - Google Patents
Steam turbineInfo
- Publication number
- JPS6119902A JPS6119902A JP14049984A JP14049984A JPS6119902A JP S6119902 A JPS6119902 A JP S6119902A JP 14049984 A JP14049984 A JP 14049984A JP 14049984 A JP14049984 A JP 14049984A JP S6119902 A JPS6119902 A JP S6119902A
- Authority
- JP
- Japan
- Prior art keywords
- turbine
- compressor
- thrust
- axial
- flow compressor
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、地熱発電プラントにおける蒸気タービンに
関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a steam turbine in a geothermal power plant.
従来の技術
地熱発電プラントにおける蒸気タービン（以下地熱蒸気
タービンという）は、低温、かつ低圧の蒸気を使用する
ために、その出力の割に蒸気流量が多く、したがって、
大容量のものには二車室四分流排気式地熱蒸気タービン
が従来は採用されているが、しかるに、その容量、ある
いは復水器の真空度によっては、前記二車室四分流排気
式タービンでは排気面積が過剰となり、さシとて一車室
二分流排気式では排気面積が不足する場合があり、その
ような場合には三分流」ノド仏式が適当と４二るけれど
も、二分流排気−車室と単流排気−車室とを繋いで構成
してなるものでは、つぎに述べるような不具合があると
されている。すなわち、■単流排気部における推力が平
衡せず、■これを平衡させる目的で推力平衡項を配設さ
せると漏洩損失のために効率の低下が生じ、壕だ前記不
平衡推力に耐えるように推力軸受を大形にすると軸受損
失が大きくなってまた効率低下が起きる。一方、地熱蒸
気タービンに利用される蒸気中には不凝縮性のガスが大
量に含まれていることが多いという特徴がある。このよ
うな場合には前記ガスを復水中から抽出するために大容
量のガス抽出器を使用しなければならないが、該ガス抽
出器には蒸気エゼクタ、あるいは高効率の多段ラジアル
ブロワ、ロータリ真空ポンプ等が採用されており、ガス
量が多い場合は前記ガス抽出器と復水器とを結ぶガス抽
出管が大口径のものになって該復水器周辺の配管配置を
困難にさせている。また、ガス量が極めて多い場合には
、ガス抽出器に多段軸流圧縮機を利用することが考えら
れるが、この場合、例えば復水器圧力が０ 、１ ｋｇ
／ｃｄａｂｓのとき段数が２０段以上になるなど段数が
増大し、高圧側の翼高さが低くなって効率が低下し、さ
らに中間冷却器を付設するためには段落途中で分断しな
ければならずに構造が複雑になるなどの理由から従来採
用されていない。Conventional technology Steam turbines in geothermal power plants (hereinafter referred to as geothermal steam turbines) use low-temperature and low-pressure steam, so the steam flow rate is large relative to their output.
Conventionally, a two-casing four-part flow exhaust type geothermal steam turbine has been adopted for large-capacity turbines, but depending on the capacity or the degree of vacuum of the condenser, There are cases where the exhaust area becomes excessive and the exhaust area becomes insufficient with a single casing and two-way exhaust system. A device constructed by connecting a vehicle compartment and a single-flow exhaust system to the vehicle compartment is said to have the following problems. In other words, the thrust in the single-flow exhaust section is not balanced, and if a thrust balancing term is provided for the purpose of balancing this, the efficiency will decrease due to leakage loss, and the trench will not be able to withstand the unbalanced thrust. Increasing the size of the thrust bearing increases bearing loss and reduces efficiency. On the other hand, the steam used in geothermal steam turbines is characterized in that it often contains large amounts of non-condensable gas. In such cases, a large-capacity gas extractor must be used to extract the gas from the condensate, and the gas extractor may be equipped with a steam ejector, a highly efficient multi-stage radial blower, or a rotary vacuum pump. etc. are adopted, and when the amount of gas is large, the gas extraction pipe connecting the gas extractor and the condenser has a large diameter, making it difficult to arrange piping around the condenser. In addition, if the amount of gas is extremely large, it may be possible to use a multi-stage axial flow compressor for the gas extractor, but in this case, for example, if the condenser pressure is 0, 1 kg
/cdabs, the number of stages increases, such as 20 stages or more, and the height of the high-pressure side blades becomes low, reducing efficiency.Furthermore, in order to install an intercooler, it is necessary to divide the stage in the middle. Conventionally, this method has not been adopted due to the complexity of the structure.
発明の解決しようとする問題点
この発明は、三分流排気式地熱蒸気タービンにおける推
力の不平衡およびその復水器周辺の配管配置の困難を解
決することにある。Problems to be Solved by the Invention The object of the present invention is to solve the unbalance of thrust in a three-part exhaust type geothermal steam turbine and the difficulty in arranging piping around the condenser.
問題点を解決するための手段
この発明は、同車室内にａタービンおよびｂタービンを
、また他の同車室内にＣタービンおよび軸流圧縮機を夫
々結軸収容して各タービンを発電機に同軸に結合させる
とともに、両車室を復水器に、さらに該復水器を前記圧
縮機に夫々接続させ、ついで該圧縮機を中間冷却器を経
て輻流圧縮機に接続させて゛なるものである。Means for Solving the Problems This invention provides a system in which an A turbine and a B turbine are connected and housed in the same vehicle compartment, and a C turbine and an axial flow compressor are respectively connected and housed in the same vehicle compartment, and each turbine is used as a generator. They are connected coaxially, and both compartments are connected to a condenser, and the condenser is connected to the compressor, and then the compressor is connected to the radial compressor via an intercooler. be.
作用
したがって、この発明の構成によれば、この発明に係る
地熱蒸気タービンは三分流排気式タービンであるが、全
体としては二車室四分流排気式タービンを構成しており
、その軸流圧縮機がガス抽出を行々うとともに、中間冷
却器によってドレ／が分離されたガスは輻流圧縮機で処
理される。Operation Therefore, according to the configuration of the present invention, the geothermal steam turbine according to the present invention is a three-part flow exhaust type turbine, but as a whole constitutes a two-casing, four-part flow exhaust type turbine, and the axial flow compressor thereof performs gas extraction, and the gas separated from the drain/drain by the intercooler is processed by the radial compressor.
実施例
つぎに、この発明の実施例を図面によって説明すると、
図面において、同図は地熱蒸気タービンとして過熱蒸気
型、あるいはシングルフラッシュ型のものを図例してい
るが、図示しないダブルフラッシュ型のものにも適用で
きることはいう壕でもなく、すなわち、Ａ車室１および
Ｂ車室２の二車室から構成し、前記Ａ車室は周知の複流
地熱蒸気タービンと同様にａタービン３およびｂタービ
ン４の二で？−流に形成させるとともに、前記Ｂ車室は
単流のＣタービン５および単流の軸流圧縮機６から構成
してあり、前記各タービンは軸流圧縮機および発電機１
９に同軸に直結している。前記Ｃタービンはその高圧側
（入口側）がＢ車室２の中央側に、また前記軸流圧縮機
はその高圧側（吐出側）がＢ車室２の中央側に向くよう
に配置させ、前記Ａ車室およびＢ車室はそのタービン排
気ロアを排気ダクト８によって復水器９に接続させると
ともに、前記Ｂ車室の軸流圧縮機吸気口１０を抽気ダク
ト１１を経て復水器９のガス抽出口１２に接続させ、さ
らに軸流圧縮機吸気口１３をガス抽出管１４を介して中
間冷却器１５ｉＣ接続させるとともに、該中間冷却器を
他のガス抽出管１６を介して輻流圧縮機１７に接続させ
、また前記中間冷却器で発生したドレンをドレン管２ｏ
によって復水器９に回収させ、さらにまた前記輻流圧縮
機で圧縮されたガスはガス排出管２１を経て大気に放出
され、あるいは図示しないガス処理装置に送流されるよ
う釦なっているもので、主蒸気は主蒸気入口管１８を経
て前記Ａ車室のａタービン３およびｂタービン４、なら
びに前記Ｂ車室のＣタービン５に夫々導入され、前記各
々のタービンを流れた蒸気は動力を発生して同軸結合の
軸流圧縮機６および発電機１９を駆動させてから、排気
ロアがら排気ダクト８を経て復水器９に流入して冷却さ
れて凝縮するが、前記復水器のガス抽出口１２から抽出
された非凝縮性ガスは抽気ダクト１１を経通して軸流圧
縮機吸気口１０から前記軸流圧縮機に入って圧縮されて
から、その吐出口１３から吐出され、ついで該吐出ガス
はガス抽出管】４を経て中間冷却器１５に導入されて冷
却されるが、その際に生じるドレンはドレン管２０を経
通して前記復水器に回収されるとともに、前記ガスはカ
ス抽出管１６から輻流圧縮機１７にさらに導入されて圧
縮された後に、ガス排出管２Ｊから大気放出されるか、
またはガス処理装置に送られて処理される。なお、前記
軸流圧縮機を第１図においては多段のものを示したが、
単段軸流圧縮機を二基以上組合せて使用してもよく、捷
た同図においては、軸流圧縮機６の吐出流路に一段の中
間冷却器１５を介在させて二段の輻流圧縮機１７を配置
しているが、該輻流圧縮機の段数を一段、あるいは三段
でもよく、また前記輻流圧縮機が二段以上の場合には中
間冷却器１５を二段以上にしてもよく、さらに輻流圧縮
機６に代えてロータ・り真空ポンプを使用しても効果に
変わシがない。Embodiments Next, embodiments of the present invention will be explained with reference to the drawings.
In the drawing, the figure shows a superheated steam type or a single flash type geothermal steam turbine, but it does not imply that it can also be applied to a double flash type (not shown). The A casing consists of two casings, a casing 1 and a casing B 2, and the casing A has two casings, an a turbine 3 and a b turbine 4, similar to the well-known double flow geothermal steam turbine. - The B casing is composed of a single-flow C turbine 5 and a single-flow axial compressor 6, each of which is composed of an axial compressor and a generator 1.
It is directly connected coaxially to 9. The C turbine is arranged so that its high pressure side (inlet side) faces the center side of the B casing 2, and the axial flow compressor is arranged so that its high pressure side (discharge side) faces the center side of the B casing 2, The A casing and B casing have their turbine exhaust lowers connected to the condenser 9 through an exhaust duct 8, and the axial flow compressor intake port 10 of the B casing is connected to the condenser 9 through an air bleed duct 11. Furthermore, the axial flow compressor inlet 13 is connected to the intercooler 15iC via the gas extraction pipe 14, and the intercooler is connected to the radial compressor via another gas extraction pipe 16. 17, and the drain generated in the intercooler is connected to the drain pipe 2o.
The gas compressed by the radial compressor is discharged to the atmosphere through the gas discharge pipe 21, or is sent to a gas processing device (not shown) using a button. , the main steam is introduced through the main steam inlet pipe 18 into the A turbine 3 and the B turbine 4 in the A casing, and the C turbine 5 in the B casing, and the steam flowing through each of the turbines generates power. After that, the coaxially coupled axial flow compressor 6 and generator 19 are driven, and then the exhaust lower flows through the exhaust duct 8 into the condenser 9 where it is cooled and condensed. The non-condensable gas extracted from the port 12 passes through the bleed duct 11 and enters the axial compressor from the axial compressor inlet 10, is compressed, is discharged from its discharge port 13, and is then discharged from the discharge port 13. The gas is introduced into the intercooler 15 through the gas extraction pipe 4 and cooled, and the drain generated at this time is collected into the condenser through the drain pipe 20, and the gas is extracted with waste. After being further introduced into the radial compressor 17 through the pipe 16 and compressed, it is discharged into the atmosphere through the gas exhaust pipe 2J, or
Alternatively, it is sent to a gas processing device for processing. Although the axial flow compressor shown in FIG. 1 is a multi-stage one,
Two or more single-stage axial flow compressors may be used in combination, and in the same figure shown in FIG. Although the compressor 17 is arranged, the number of stages of the radial compressor may be one or three stages, and if the radial compressor has two or more stages, the intercooler 15 may be arranged in two or more stages. Moreover, even if a rotor vacuum pump is used in place of the radial compressor 6, the effect remains the same.
発明の効果
」二連したように、この発明は、三分流排気式タービン
であるが、Ａ車室１におけるＣタービン３およびｂター
ビン４は周知の複流蒸気タービンと同様に構成している
ので推力が平衡しており、またＢ車室２におけるＣター
ビン５を軸流圧縮機６に対向させて配置しているから推
力の一部が相殺されることによって、普通蒸気タービン
に装備されている程度の大きさの推力軸受を使用し、か
つ推力平衡壌の直径を増大しないで運転を行々えるのＣ
１そのタービン効率が低下することがなく、さらに復水
器９とガス抽出をする軸流圧縮機６の吸気口１０とを接
続するガス抽出配管は各タービン３．４．５と復水器９
間の排気ダクト８と同様の抽気ダクト１１となるから、
該復水器周辺の配管配置が無理がなく、容易に施工でき
るなど、この見切の産、業上の利用価値が極めて多大で
ある。"Effects of the Invention" As described above, the present invention is a three-part flow exhaust type turbine, but the C turbine 3 and the B turbine 4 in the A casing 1 are constructed in the same manner as the well-known double flow steam turbine, so that the thrust is reduced. are balanced, and since the C turbine 5 in the B casing 2 is arranged to face the axial flow compressor 6, part of the thrust is canceled out, so that the C turbine 5 in the B casing 2 is arranged to face the axial flow compressor 6, so that a part of the thrust is canceled out. It is possible to operate using a thrust bearing with a size of C and without increasing the diameter of the thrust balance shaft.
1. The gas extraction piping that connects the condenser 9 and the intake port 10 of the axial flow compressor 6 that extracts gas is connected to each turbine 3.4.5 and the condenser 9 without reducing the turbine efficiency.
Since the air bleed duct 11 is similar to the exhaust duct 8 between
The industrial value of this cut-off is extremely large, as the piping arrangement around the condenser is reasonable and can be easily constructed.
図面は、この発明の実施例を示す系統図である。
１・・Ａ車室、２・ＩＩＢ車室、３・拳ａタービン、４
・・ｂタービン、５・・Ｃタービン、６−・軸流圧縮機
、９・・復水器、１５゛・・中間冷却器、１７・・輻流
圧縮機、１８・・主蒸気入口管、１９・・発電機。
復代理人 木村正巳・：バ
＼１（、ｙ
（ほか２名）
手続補正書（自発）
昭和５９年 ８月２２日
特許庁長官 志 賀 学 殿
１、事件の表示 特願昭５９年１４０４９９号２、発
明の名称 蒸気タービン ′３、補正をす
る者 事件との関係 出願人名称 三菱重工業株
式会社
４、復代理人 〒１００東京都千代田区有楽町−丁目
８番１号日比谷パークビルヂング５１９号（電話２１３
−０６８６）５、補正の対象 明細書の「発明の詳
細な説明」の欄および図面
６、補正の内容
［Ａ）明細書を次のように訂正します。
（１）第２頁第１６行、「復水中」を「復水器」と訂正
。
（２）第３頁第９行Ｆしなければならずに」を「しなけ
ればならず」と訂正。
（３）第４頁第８行「−ビンを構成しており」を「−ピ
ンと同様の構成をしており」と訂正。
（４）第６頁第１８行「単段軸流圧縮機」を「単段輻流
圧縮機」と訂正。
（５）第′７頁第５行Ｆ輻流圧縮Ｗ１６」を「輻流圧縮
機１７」と訂正。
ＣＢ）図面中、排気ダクト８（図中右側のもの）の引出
線を別紙フビーに赤で示すように訂正します。The drawing is a system diagram showing an embodiment of the present invention. 1.A compartment, 2.IIB compartment, 3.Fist a turbine, 4
・・B turbine, 5・・C turbine, 6・・axial flow compressor, 9・・condenser, 15゛・・intercooler, 17・・radial flow compressor, 18・・main steam inlet pipe, 19... Generator. Sub-agent Masami Kimura: BA\1(,y (and 2 others) Procedural amendment (voluntary) August 22, 1980 Manabu Shiga, Commissioner of the Patent Office 1, Indication of case Patent application No. 140499 of 1982 2. Title of the invention Steam turbine '3. Person making the amendment Relationship to the case Applicant name Mitsubishi Heavy Industries, Ltd. 4. Sub-agent 519 Hibiya Park Building, 8-1 Yurakucho-chome, Chiyoda-ku, Tokyo 100 (Telephone number) 213
-0686) 5. Subject of amendment The "Detailed Description of the Invention" column of the specification and Drawing 6, Contents of amendment [A] The specification will be corrected as follows. (1) On page 2, line 16, "condensate" was corrected to "condenser." (2) Page 3, line 9, F “must” was corrected to “must”. (3) On page 4, line 8, "-consists of a bottle" was corrected to "-constitutes the same structure as a pin." (4) On page 6, line 18, "single stage axial flow compressor" was corrected to "single stage radial flow compressor". (5) Page '7, line 5, F radial compression W16' was corrected to 'radial compressor 17'. CB) In the drawing, correct the leader line of exhaust duct 8 (the one on the right side of the drawing) as shown in red in the attached sheet.
Claims (1)
車室内にｃタービンおよび軸流圧縮機を夫々結軸収容し
て各タービンを発電機に同軸に結合させるとともに、両
車室を復水器に、さらに該復水器を前記圧縮機に夫々接
続させることを特徴とする、地熱発電プラントにおける
蒸気タービン。The a-turbine and the b-turbine are housed in the same casing, and the c-turbine and the axial compressor are housed in the same casing, and each turbine is coaxially connected to the generator, and both casings are used for condensing water. A steam turbine in a geothermal power plant, characterized in that the condenser is connected to the compressor, and the condenser is connected to the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14049984A JPS6119902A (en) | 1984-07-09 | 1984-07-09 | Steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14049984A JPS6119902A (en) | 1984-07-09 | 1984-07-09 | Steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6119902A true JPS6119902A (en) | 1986-01-28 |
Family
ID=15270051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14049984A Pending JPS6119902A (en) | 1984-07-09 | 1984-07-09 | Steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119902A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346367A (en) * | 1986-08-12 | 1988-02-27 | 大同ほくさん株式会社 | Carbon monoxide separating purifier |
| JPS63169470A (en) * | 1986-12-29 | 1988-07-13 | 大同ほくさん株式会社 | Carbon monoxide separating purifier |
-
1984
- 1984-07-09 JP JP14049984A patent/JPS6119902A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346367A (en) * | 1986-08-12 | 1988-02-27 | 大同ほくさん株式会社 | Carbon monoxide separating purifier |
| JPS63169470A (en) * | 1986-12-29 | 1988-07-13 | 大同ほくさん株式会社 | Carbon monoxide separating purifier |
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