JPH03294605A - Quick cooling device for steam turbine - Google Patents
Quick cooling device for steam turbineInfo
- Publication number
- JPH03294605A JPH03294605A JP9519690A JP9519690A JPH03294605A JP H03294605 A JPH03294605 A JP H03294605A JP 9519690 A JP9519690 A JP 9519690A JP 9519690 A JP9519690 A JP 9519690A JP H03294605 A JPH03294605 A JP H03294605A
- Authority
- JP
- Japan
- Prior art keywords
- cooling medium
- steam turbine
- cooling
- casing
- jacket
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 50
- 239000002826 coolant Substances 0.000 claims abstract description 87
- 239000004020 conductor Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 description 6
- 239000002470 thermal conductor Substances 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、蒸気タービンを運転停止した後急速に冷却す
る装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for rapidly cooling a steam turbine after it has been shut down.
蒸気タービン、特に発電用蒸気タービンは一般に、定期
的に分解点検作業を実施する必要がある。Steam turbines, particularly steam turbines for power generation, generally require periodic overhaul work.
この分解点検作業の際には先ず、蒸気タービンに連結さ
れた発電機を電力系統から解列（遮断）し、そして蒸気
タービンの運転を停止する。その後、蒸気タービン各部
の金属温度が成る程度まで（例えば約１５０°Ｃまで）
低下するのを待ってから分解（開放）作業を開始する。During this overhaul work, first, the generator connected to the steam turbine is disconnected (cut off) from the power system, and then the operation of the steam turbine is stopped. After that, the metal temperature of each part of the steam turbine reaches a certain level (for example, up to about 150°C).
Wait for it to drop before starting disassembly (opening).
なぜなら、蒸気タービンの温度がまだ高いうちに蒸気タ
ービンを分解すると、作業に危険や困難を伴うことにな
り、また蒸気タービン各部が急激にかつ不均一に冷却さ
れるため、ケーシング（車室）等に歪みを生じたり、局
部的に大きな応力を生ずるからである。This is because if the steam turbine is disassembled while its temperature is still high, the work will be dangerous and difficult, and each part of the steam turbine will be cooled rapidly and unevenly, so the casing (casing) etc. This is because it may cause distortion or locally large stress.
蒸気タービン、特に大容量の蒸気タービンは、その構成
部品であるケーシング、ロータ（回転体）および各種付
属機器等が厚肉の重量物であるため、質量が大きく、熱
容量が大である。また、運転中の熱損失を少なくするよ
う、ケーシングが石綿等の厚い（約２００〜２５０ｍｍ
）保温材で被覆されているため、熱が放散しにくい。更
に、運転停止後の蒸気タービンの冷却は従来は自然冷却
によって行われている。Steam turbines, especially large-capacity steam turbines, have large mass and large heat capacity because their constituent parts, such as a casing, a rotor, and various accessories are thick and heavy. In addition, to reduce heat loss during operation, the casing is made of thick material such as asbestos (approximately 200 to 250 mm).
) Since it is covered with heat insulating material, it is difficult for heat to dissipate. Furthermore, cooling of the steam turbine after shutdown has conventionally been performed by natural cooling.
そのため、運転停止後の蒸気タービンの冷却速度が非常
に緩慢であり、第５図の曲線Ａで示すように、運転停止
時の温度（約４００°Ｃ）から分解可能温度（約１５０
°Ｃ）まで冷却するのに、６００■機では約７日を要し
ている。この期間が分解点検作業の待ち時間となってお
り、分解点検作業の効率を非常に悪くしている。Therefore, the cooling rate of the steam turbine after the shutdown is very slow, and as shown by curve A in Figure 5, the temperature at the time of shutdown (approximately 400°C) is reduced to the decomposable temperature (approximately 150°C).
It takes about 7 days for the 600cm machine to cool down to 12°F (°C). This period is the waiting time for the overhaul work, which greatly reduces the efficiency of the overhaul work.
そこで、本発明は、蒸気タービンのケーシング等に有害
な歪みを与えず、また冷却時に発生する各部応力を許容
範囲内に保ちつつ、蒸気タービンを迅速に冷却し、分解
作業開始までの待ち時間を大幅に短縮することができる
蒸気タービンの急速冷却装置を提供することを目的とす
るものである。Therefore, the present invention cools the steam turbine quickly, without causing harmful distortion to the steam turbine casing, etc., and while keeping the stress in each part generated during cooling within the allowable range, and reducing the waiting time until the start of disassembly work. It is an object of the present invention to provide a rapid cooling device for a steam turbine that can be significantly shortened.
この目的は、冷却媒体通路を有するジャケットによって
蒸気タービンのケーシングを被覆し、前記冷却媒体通路
を冷却媒体供給装置に接続したことによって達成される
。This object is achieved by covering the casing of the steam turbine with a jacket having cooling medium passages, which are connected to a cooling medium supply device.
更に、蒸気タービンのケーシングの表面に熱伝導体層を
被覆形成し、冷却媒体通路を有するジャケットによって
前記熱伝導体層を被覆し、前記冷却媒体通路を冷却媒体
供給装置に接続したことによっても達成される。Furthermore, this can also be achieved by forming a heat conductor layer on the surface of the casing of the steam turbine, covering the heat conductor layer with a jacket having a cooling medium passage, and connecting the cooling medium passage to a cooling medium supply device. be done.
更に、冷却媒体を蒸気タービンの内部に流すための装置
を備えていることによっても達成される。Furthermore, this is achieved by providing a device for flowing a cooling medium into the interior of the steam turbine.
上記の蒸気タービン外部からの急速冷却装置と内部から
の急速冷却装置の両方を、蒸気タービンに備え付けるこ
とによっても、上記目的を達成することができる。The above object can also be achieved by equipping the steam turbine with both the above-described quick cooling device from the outside of the steam turbine and the quick cooling device from the inside.
本発明による蒸気タービンの急速冷却装置は、タービン
の運転停止後、ジャケット内の冷却媒体通路に冷却媒体
（空気等）を流し、蒸気タービンを外部から強制冷却す
る。The rapid cooling device for a steam turbine according to the present invention causes a cooling medium (air or the like) to flow through a cooling medium passage in a jacket after the turbine has stopped operating, and forcibly cools the steam turbine from the outside.
本発明による他の蒸気タービン象、速冷却装置は蒸気タ
ービンの内部に冷却媒体（空気等）を流し、内部から強
制冷却する。Another aspect of the steam turbine according to the present invention, the rapid cooling device, flows a cooling medium (such as air) into the interior of the steam turbine to perform forced cooling from the inside.
蒸気タービンの運転中は、ジャケットの冷却媒体通路に
冷却媒体を流さず、冷却媒体通路内に空気を停滞させた
り、通路内を真空にすることにより、熱の放散を防ぎ、
保温の役目をもたせることができる。During operation of the steam turbine, the cooling medium is not allowed to flow through the cooling medium passage of the jacket, and air is allowed to stagnate in the cooling medium passage, and the inside of the passage is vacuumed to prevent heat dissipation.
It can also serve as a heat insulator.
次に、図に示した実施例に基づいて本発明の詳細な説明
する。Next, the present invention will be explained in detail based on the embodiment shown in the drawings.
本発明の第１実施例による象、速冷却装置を備えた高中
圧蒸気タービン１を第１図に示す。この蒸気タービンは
高圧タービンと中圧タービンが一体となっていて、一つ
のケーシング２内に収容されている。輪郭だけを示した
蒸気タービン１は見やすくするためハツチングが付けで
ある。２は蒸気タービン１０ケーシング（車室）、３は
主蒸気入口、４は図示していない高圧タービン（蒸気タ
ービン１内の左側に配置されている）を通過した後の蒸
気の高圧出口である。高圧出口４から出た蒸気は蒸気タ
イ−ビン１の外部に配置された図示していないボイラの
再熱器を通過して再熱され、そして再熱蒸気人口５から
再び蒸気タービン１内に入り、右側に配置された図示し
ていない中圧タービンに達する。蒸気は更に、中圧出口
６から出て、蒸気タービン１の外部に設けられた図示し
ていない低圧タービンを経て復水器に達する。第１図に
おいて、７および８は抽出口である。FIG. 1 shows a high and intermediate pressure steam turbine 1 equipped with a rapid cooling device according to a first embodiment of the present invention. This steam turbine includes a high-pressure turbine and an intermediate-pressure turbine, which are housed in a single casing 2. The steam turbine 1 whose outline is only shown is hatched to make it easier to see. 2 is a casing (casing) of the steam turbine 10, 3 is a main steam inlet, and 4 is a high-pressure outlet for steam after passing through a high-pressure turbine (disposed on the left side of the steam turbine 1), not shown. The steam exiting from the high-pressure outlet 4 passes through a reheater of a boiler (not shown) located outside the steam tie-bin 1 and is reheated, and then enters the steam turbine 1 again from the reheat steam port 5. , reaching an intermediate-pressure turbine (not shown) located on the right. The steam further exits from the intermediate pressure outlet 6, passes through a low pressure turbine (not shown) provided outside the steam turbine 1, and reaches the condenser. In FIG. 1, 7 and 8 are extraction ports.
蒸気タービン１のケーシング２はジャケット１０によっ
て被覆されている。このジャケット１０はケーシング２
との間に冷却媒体通路１１を形成している。冷却媒体通
路１１は図示していない仕切り板によって仕切られ、冷
却媒体が一様に流れるようになっている。ジャケットカ
バー１１には冷却媒体人口１２と冷却媒体出口１３が形
成されている。この冷却媒体人口１２と冷却媒体出口１
３の数や配置位置は任意に選択可能である。The casing 2 of the steam turbine 1 is covered by a jacket 10 . This jacket 10 has a casing 2
A cooling medium passage 11 is formed between the two. The cooling medium passage 11 is partitioned by a partition plate (not shown) so that the cooling medium flows uniformly. A cooling medium outlet 12 and a cooling medium outlet 13 are formed in the jacket cover 11 . This cooling medium population 12 and cooling medium outlet 1
The number and arrangement position of 3 can be arbitrarily selected.
冷却媒体人口１２は冷却媒体人口弁１４と熱交換器１５
を経て冷却媒体輸送装置１６に接続されている。冷却媒
体輸送装置１６には更に、冷却媒体流量制御弁１７が付
設されている。The coolant population 12 includes a coolant population valve 14 and a heat exchanger 15
It is connected to the cooling medium transport device 16 via. The coolant transport device 16 is further provided with a coolant flow rate control valve 17 .
この冷却媒体人口弁１４、熱交換器１５、冷却媒体輸送
装置１６および冷却媒体流量制御弁１７等は、冷却媒体
供給装置を形成している。冷却媒体人口弁１４と、冷却
媒体の温度を制御する熱交換器１５は必ずしも必要では
ない。冷却媒体輸送装置１６は、冷却媒体が空気または
その他の気体であるときには、プロワであり、液体であ
るときにはポンプである。冷却媒体流量制御弁１７は冷
却媒体が空気またはその他の気体であるときには、−船
釣に、図示のようにブロワ１６の入口側に設けられ、液
体であるときにはポンプ１６の出口側に設けられる。冷
却媒体流量制御弁１７は自動式でも手動式でもよく、形
式は問わない。The coolant artificial valve 14, the heat exchanger 15, the coolant transport device 16, the coolant flow rate control valve 17, and the like form a coolant supply device. The cooling medium valve 14 and the heat exchanger 15 for controlling the temperature of the cooling medium are not necessarily required. The cooling medium transport device 16 is a blower when the cooling medium is air or other gas, and a pump when the cooling medium is a liquid. When the coolant is air or other gas, the coolant flow control valve 17 is provided on the inlet side of the blower 16 as shown in the figure, and when the coolant is a liquid, it is provided on the outlet side of the pump 16. The coolant flow rate control valve 17 may be of an automatic type or a manual type, and the type does not matter.
冷却媒体としては、気体（例えば空気）と液体（例えば
水や油等）を使用する。Gas (for example, air) and liquid (for example, water, oil, etc.) are used as the cooling medium.
上記構造の急速冷却装置を備えた蒸気タービンは、蒸気
タービンの分解点検作業を行うために運転を停止した後
、ジャケット１０内の冷却媒体通路１１に冷却媒体を流
すことにより、外部から強制冷却される。冷却媒体によ
る強制冷却により、冷却速度が高まり、運転停止から分
解可能温度（約１５０°Ｃ）になるまでの冷却時間が大
幅に短縮され、例えば前述の６００ｈ機では、第５図に
おいて曲線Ｂで示すように、約１日で分解可能温度まで
冷却することができる。従って、分解点検作業のための
待ち時間が非常に短くなり、分解点検作業の効率が向上
する。また、冷却が均一にかつ徐々に行われるので、ケ
ーシング等に有害な歪みを与えることがなく、冷却時に
発生する各部応力は許容範囲内に保たれる。更に、冷却
媒体の流量と温度を制御し、冷却媒体通路１１内で冷却
媒体が均一に流れるように冷却媒体通路１１を形成する
ことにより、冷却速度を一定にすることができ、かつ歪
みや応力の発生を一層抑えることができる。A steam turbine equipped with a rapid cooling device having the above structure is forcibly cooled from the outside by flowing a cooling medium through the cooling medium passage 11 in the jacket 10 after the operation is stopped for overhauling and inspecting the steam turbine. Ru. Forced cooling with a cooling medium increases the cooling rate and significantly shortens the cooling time from shutdown to reaching the decomposable temperature (approximately 150°C).For example, in the 600h machine mentioned above, curve B in Figure 5 As shown, it can be cooled to a decomposable temperature in about one day. Therefore, the waiting time for disassembly and inspection work becomes extremely short, and the efficiency of disassembly and inspection work is improved. Further, since cooling is performed uniformly and gradually, no harmful distortion is caused to the casing, etc., and stress in each part generated during cooling is kept within an allowable range. Furthermore, by controlling the flow rate and temperature of the cooling medium and forming the cooling medium passage 11 so that the cooling medium flows uniformly within the cooling medium passage 11, the cooling rate can be kept constant, and distortion and stress can be kept constant. The occurrence of this can be further suppressed.
蒸気タービンの運転中は、ジャケット１０の冷却媒体通
路１１に冷却媒体を流さず、冷却媒体通路１１内に空気
を停滞させたり、通路１１内を真空にすることにより、
熱の放散を防ぎ、保温の役目をもたせることができる。During operation of the steam turbine, the cooling medium is not allowed to flow through the cooling medium passage 11 of the jacket 10, and air is allowed to stagnate within the cooling medium passage 11, or the inside of the passage 11 is evacuated.
It can prevent heat dissipation and serve as a heat insulator.
第２図と第３図は、本発明の第２実施例による急速冷却
装置を備えた蒸気タービンの縦断面と横断面を示してい
る。2 and 3 show longitudinal and cross-sections of a steam turbine equipped with a rapid cooling device according to a second embodiment of the invention.
この第２実施例による急速冷却装置は、前述の第１実施
例の急速冷却装置と異なり、蒸気タービン１のケーシン
グ２の表面に、熱伝導体層１８が被覆形成され、この熱
伝導体層１８とシャケ・ント１０の間に冷却媒体通路１
１が形成されている。The rapid cooling device according to the second embodiment differs from the rapid cooling device according to the first embodiment described above in that a heat conductor layer 18 is formed on the surface of the casing 2 of the steam turbine 1, and this heat conductor layer 18 Cooling medium passage 1 between
1 is formed.
この熱伝導体層１８により、蒸気タービン１のケーシン
グ２が複雑な外形形状をしているときでも、冷却媒体を
均一に流す冷却媒体通路１１を容易に作ることができる
。すなわち、ケーシング２の外形形状が複雑であるとき
には、ケーシング２の表面の全部または一部に適宜厚さ
の熱伝導体層１８を密着被覆し、ケーシング２の凸凹を
補正して、熱伝導体層１８の外形形状を滑らかにするこ
とにより、この熱伝導体層１８とジャケット１ｏの間に
均一な厚さの冷却媒体通路１１を形成することができ、
ケーシング２に合わせてジャケット１０を複雑な形に形
成する必要がなくなる。熱伝導体層１８は例えば銅、鉄
等の金属粉末または金属板からなっている。With this heat conductor layer 18, even when the casing 2 of the steam turbine 1 has a complicated external shape, it is possible to easily create the cooling medium passage 11 through which the cooling medium flows uniformly. That is, when the external shape of the casing 2 is complex, the thermal conductor layer 18 of an appropriate thickness is tightly coated on all or part of the surface of the casing 2, and the irregularities of the casing 2 are corrected. By smoothing the external shape of 18, it is possible to form a cooling medium passage 11 with a uniform thickness between this thermal conductor layer 18 and the jacket 1o,
There is no need to form the jacket 10 into a complicated shape to match the casing 2. The thermal conductor layer 18 is made of metal powder or metal plate, such as copper or iron.
第２実施例の場合には更に、冷却媒体通路１１を仕切っ
て冷却媒体の流れを均一にするために、ジャケット１０
と熱伝導体層１８またはケーシング２との間に仕切り板
１９が設けられている。なお、仕切り板１９′の間隔を
狭くしてその間に熱伝導体層１８′を充填することがで
きる。この仕切り板１９．１９’と熱伝導体層１８′は
補強材を兼ねる。In the case of the second embodiment, a jacket 10 is further used to partition the cooling medium passage 11 and make the flow of the cooling medium uniform.
A partition plate 19 is provided between the heat conductor layer 18 or the casing 2. Note that the interval between the partition plates 19' can be narrowed and the thermal conductor layer 18' can be filled between them. The partition plates 19, 19' and the heat conductor layer 18' also serve as reinforcing materials.
更に、冷却媒体人口１２は冷却媒体の流れを均一にする
ために、仕切り板１９．１９’の位置やジャケット１０
の形状を考慮して最適位置に設けられている（第２図で
は上側の冷却媒体人口１２と下側の冷却媒体入口１２′
が設けられている）。Furthermore, the cooling medium population 12 is adjusted by adjusting the positions of the partition plates 19 and 19' and the jacket 10 in order to make the flow of the cooling medium uniform.
(In Figure 2, the upper cooling medium inlet 12 and the lower cooling medium inlet 12'
).
０
更に、運転中の熱の放散を防ぐため、ジャケット１０は
石綿等の厚い保温材２０によって被覆されている。Further, in order to prevent heat dissipation during operation, the jacket 10 is covered with a thick heat insulating material 20 such as asbestos.
第４図は、本発明の第３実施例による象、速冷却装置を
備えた蒸気タービンを示している。この急速冷却装置は
前記の第１，２実施例による外部冷却式のものと異なり
、蒸気タービン１を内部から強制冷却するものである。FIG. 4 shows a steam turbine equipped with a rapid cooling device according to a third embodiment of the invention. This rapid cooling device is different from the external cooling type devices according to the first and second embodiments described above, and is one that forcibly cools the steam turbine 1 from inside.
この急速冷却装置は、２個所から冷却媒体を蒸気タービ
ン内に供給し、２個所から排出する。先ず、高圧タービ
ン側では、高圧出口４から冷却媒体を入れ、高圧タービ
ンの中を通過させて主蒸気人口３から出す。中圧タービ
ン側では、中圧出口６から入れ、中圧タービンの中を通
過させて再熱蒸気人ロアから出す。第４図において、１
４は冷却媒体人口弁、１５は熱交換器、１６はブロワ、
１７は冷却媒体流量制御弁である。冷却媒体輸送用のブ
ロワ１６と流量制御弁１７は図示例では、冷却媒体の出
口側に設置されているが、入口側に設置してもよい。冷
却媒体人口弁１４と熱交換器１５は必ずしも必要ではな
い。This rapid cooling device supplies cooling medium into the steam turbine from two locations and discharges it from two locations. First, on the high-pressure turbine side, a cooling medium is introduced from the high-pressure outlet 4, passed through the high-pressure turbine, and discharged from the main steam outlet 3. On the intermediate-pressure turbine side, the reheating steam enters through the intermediate-pressure outlet 6, passes through the intermediate-pressure turbine, and exits from the reheat steam lower. In Figure 4, 1
4 is a cooling medium population valve, 15 is a heat exchanger, 16 is a blower,
17 is a coolant flow rate control valve. Although the blower 16 and the flow rate control valve 17 for transporting the coolant are installed on the outlet side of the coolant in the illustrated example, they may be installed on the inlet side. The coolant artificial valve 14 and the heat exchanger 15 are not necessarily required.
この第３実施例による急速冷却装置の場合には、蒸気タ
ービン停止後、冷却媒体を蒸気タービン内に冷却媒体を
流す。その際、冷却媒体の流量や温度を制御しながら供
給することが望ましい。蒸気タービン１は冷却媒体によ
って内部から迅速にかつ均一に強制冷却される。In the case of the rapid cooling device according to the third embodiment, after the steam turbine is stopped, the cooling medium is caused to flow into the steam turbine. At that time, it is desirable to supply the cooling medium while controlling its flow rate and temperature. The steam turbine 1 is forcedly cooled quickly and uniformly from the inside by the cooling medium.
この内部冷却式の急速冷却装置は、単独で蒸気タービン
１を冷却してもよいし、第１．２．３図に示した外部冷
却式の急速冷却装置と組み合わせて使用してもよい。組
み合わせて使用する場合には、外部（ケーシング等）と
内部（ロータ等）の温度差を非常に小さく保ちつつ、−
府会、速な冷却を行うことができる。This internal cooling type rapid cooling device may be used alone to cool the steam turbine 1, or may be used in combination with the external cooling type rapid cooling device shown in FIG. 1.2.3. When used in combination, -
Prefecture, fast cooling can be performed.
以上、本発明の実施例について説明したが、本発明は上
記実施例に限定されるものではない。例えば、第１図の
急速冷却装置のジャケラ）１０を、第２，３図の急速冷
却装置のように、保温材２゜で被覆することができる。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the jacket 10 of the rapid cooling device shown in FIG. 1 can be covered with a heat insulating material 2° as in the rapid cooling devices shown in FIGS. 2 and 3.
更に、上記のすべての実施例では、冷却媒体は蒸気ター
ビンを冷却した４゜
１
後大気に放出されるが（開放サイクル）、冷却後循環さ
せる（閉サイクル）ことができる。更に、前記の一体型
の高中圧タービンだけでなく、高圧タービンと中圧ター
ビンが独立し、ケーシングが分割された蒸気タービンや
、他のいろいろな蒸気タービンにも、本発明の象、速冷
却装置を適用可能である。Furthermore, in all the embodiments described above, the cooling medium is discharged to the atmosphere after cooling the steam turbine (open cycle), but it can be circulated after cooling (closed cycle). Furthermore, the present invention can be applied not only to the above-mentioned integrated high- and intermediate-pressure turbines, but also to steam turbines in which the high-pressure turbine and the intermediate-pressure turbine are independent and the casing is divided, as well as various other steam turbines. is applicable.
本発明による蒸気タービンの急速冷却装置は、タービン
ケーシングを被覆するジャケット内の冷却通路、および
または蒸気タービン内に、冷却媒体を流して強制冷却す
るようにしたので、蒸気タービンの部品に有害な歪みを
与えずに、かつ冷却時に発生ずる各部応力を許容範囲内
に保ちながら、蒸気タービンを運転停止後迅速に冷却し
、分解作業開始までの待ち時間を大幅に短縮することが
できる。The rapid cooling device for a steam turbine according to the present invention is configured to forcedly cool the cooling medium by flowing it through the cooling passage in the jacket covering the turbine casing and/or inside the steam turbine, thereby causing harmful damage to the parts of the steam turbine. The steam turbine can be quickly cooled down after the steam turbine has stopped operating, and the waiting time until the start of disassembly work can be significantly shortened, while maintaining stress in each part generated during cooling within an allowable range.
第１図は本発明の第１実施例による急速冷却装置を備え
た蒸気タービンの粗断面図、第２図は木２
発明の第２実施例による急速冷却装置を備えた蒸気ター
ビンの一部の縦断面図、第３図は第２図の蒸気タービン
の横断面図、第一４図は本発明の第３実施例による急速
冷却装置を備えた蒸気タービンを示す図、第５図は本発
明による急速冷却装置を備えた蒸気タービンと従来の蒸
気タービンの運転停止後の冷却温度を示すグラフである
。
■・・・蒸気タービン、 ２・・・ケーシング、１０
・・・ジャケット、 １１・・・冷却媒体通路、
１８・・・熱伝導体層FIG. 1 is a rough sectional view of a steam turbine equipped with a rapid cooling device according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view of the steam turbine of FIG. 2, FIG. 14 is a diagram showing a steam turbine equipped with a rapid cooling device according to a third embodiment of the present invention, and FIG. 5 is a cross-sectional view of the steam turbine of the present invention. 1 is a graph showing the cooling temperature after shutdown of a steam turbine equipped with a rapid cooling device according to the present invention and a conventional steam turbine. ■...Steam turbine, 2...Casing, 10
...jacket, 11...cooling medium passage,
18...Thermal conductor layer
Claims (4)
ービンのケーシングを被覆し、 前記冷却媒体通路を冷却媒体供給装置に接続したことを
特徴とする蒸気タービンの急速冷却装置。(1) A rapid cooling device for a steam turbine, characterized in that a casing of the steam turbine is covered with a jacket having a cooling medium passage, and the cooling medium passage is connected to a cooling medium supply device.
被覆形成し、 冷却媒体通路を有するジャケットによって前記熱伝導体
層を被覆し、 前記冷却媒体通路を冷却媒体供給装置に接続したことを
特徴とする蒸気タービンの急速冷却装置。(2) A heat conductor layer is coated on the surface of a casing of a steam turbine, the heat conductor layer is covered with a jacket having a cooling medium passage, and the cooling medium passage is connected to a cooling medium supply device. A rapid cooling system for steam turbines.
を備えていることを特徴とする、請求項（１）または請
求項（２）記載の蒸気タービンの急速冷却装置。(3) The rapid cooling system for a steam turbine according to claim (1) or claim (2), further comprising a device for flowing a cooling medium into the inside of the steam turbine.
を備えていることを特徴とする蒸気タービンの急速冷却
装置。(4) A rapid cooling device for a steam turbine, comprising a device for flowing a cooling medium into the interior of the steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519690A JPH03294605A (en) | 1990-04-12 | 1990-04-12 | Quick cooling device for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519690A JPH03294605A (en) | 1990-04-12 | 1990-04-12 | Quick cooling device for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03294605A true JPH03294605A (en) | 1991-12-25 |
Family
ID=14131002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9519690A Pending JPH03294605A (en) | 1990-04-12 | 1990-04-12 | Quick cooling device for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03294605A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008521005A (en) * | 2004-11-18 | 2008-06-19 | コーニング インコーポレイテッド | System and method for self-referencing a sensor in a micrometer sized depth flow chamber |
| US7611905B2 (en) | 2005-05-19 | 2009-11-03 | Fujifilm Corporation | Apparatus and method of assay in utilizing attenuated total reflection |
| US7999942B2 (en) | 2002-12-25 | 2011-08-16 | Bio-Rad Laboratories Inc. | Surface plasmon resonance sensor |
| US8916389B2 (en) | 2006-06-26 | 2014-12-23 | Nippon Telegraph And Telephone Corporation | Sensor element for SPR measurement |
| JP2015508472A (en) * | 2012-01-25 | 2015-03-19 | シーメンス アクティエンゲゼルシャフト | Method for controlling the cooling process of turbine components |
| KR102397965B1 (en) * | 2021-10-18 | 2022-05-16 | 파워테크솔루션 주식회사 | High-efficiency steam turbine cooling system using air heater |
-
1990
- 1990-04-12 JP JP9519690A patent/JPH03294605A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7999942B2 (en) | 2002-12-25 | 2011-08-16 | Bio-Rad Laboratories Inc. | Surface plasmon resonance sensor |
| US8363223B2 (en) | 2002-12-25 | 2013-01-29 | Bio-Rad Laboratories Inc. | Surface plasmon resonance sensor |
| US8743369B2 (en) | 2002-12-25 | 2014-06-03 | Bio-Rad Laboratories Inc. | Surface plasmon resonance sensor |
| JP2008521005A (en) * | 2004-11-18 | 2008-06-19 | コーニング インコーポレイテッド | System and method for self-referencing a sensor in a micrometer sized depth flow chamber |
| US7611905B2 (en) | 2005-05-19 | 2009-11-03 | Fujifilm Corporation | Apparatus and method of assay in utilizing attenuated total reflection |
| US8916389B2 (en) | 2006-06-26 | 2014-12-23 | Nippon Telegraph And Telephone Corporation | Sensor element for SPR measurement |
| JP2015508472A (en) * | 2012-01-25 | 2015-03-19 | シーメンス アクティエンゲゼルシャフト | Method for controlling the cooling process of turbine components |
| US9422832B2 (en) | 2012-01-25 | 2016-08-23 | Siemens Aktiengesellschaft | Method for controlling a cooling process of turbine components |
| KR102397965B1 (en) * | 2021-10-18 | 2022-05-16 | 파워테크솔루션 주식회사 | High-efficiency steam turbine cooling system using air heater |
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