JP2001271606A - Oval deformation preventing casing - Google Patents
Oval deformation preventing casingInfo
- Publication number
- JP2001271606A JP2001271606A JP2000090415A JP2000090415A JP2001271606A JP 2001271606 A JP2001271606 A JP 2001271606A JP 2000090415 A JP2000090415 A JP 2000090415A JP 2000090415 A JP2000090415 A JP 2000090415A JP 2001271606 A JP2001271606 A JP 2001271606A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- divided
- casing
- flange connection
- deformation
- 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.)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蒸気タービン、ま
た、ガスタービンとその圧縮機等の車室において、オー
バル変形を防止する車室に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing for preventing oval deformation in a casing such as a steam turbine, a gas turbine and a compressor thereof.
【０００２】[0002]
【従来の技術】従来の蒸気タービン、また、ガスタービ
ンとその圧縮機等（以下「タービン等」という）の車室
につき、一般的なタービン車室を例に図５および図６に
基づき説明する。図５（ａ）はタービン車室をロータの
中心軸方向に見た模式的な断面図であり、図５（ｂ）は
同図（ａ）中Ｂ−Ｂ矢視縦断面図である。2. Description of the Related Art A conventional steam turbine, and a cabin of a gas turbine and its compressor (hereinafter referred to as "turbine, etc.") will be described with reference to FIGS. . FIG. 5A is a schematic cross-sectional view of the turbine casing viewed in the direction of the center axis of the rotor, and FIG. 5B is a vertical cross-sectional view taken along the line BB in FIG.
【０００３】タービン車室１は、通常、ロータ６の中心
軸回りに概ね対称的に２分割して構成され、上部車室１
ａと下部車室１ｂとをそれぞれの上下接続フランジ部２
でボルト３によって締結した構造となっている。タービ
ン車室１の内面には静翼４等の静止系が設けられ、それ
と同心にタービン車室１内には動翼５を取りつけたロー
タ６等の回転系が水平に貫装され、回転可能に支承され
ている。[0003] The turbine casing 1 is generally divided into two parts symmetrically about the center axis of the rotor 6.
a and the lower casing 1b are connected to the upper and lower connection flanges 2 respectively.
With a bolt 3 for fastening. A stationary system such as a stationary blade 4 is provided on the inner surface of the turbine casing 1, and a rotating system such as a rotor 6 having a moving blade 5 mounted on the turbine casing 1 concentrically with the stationary system, and is rotatable. It is supported by
【０００４】このようなタービン車室１において、ター
ビン運転時には、タービン車室１内部で静止系と回転系
との間に高温、高圧のガスや、蒸気等の流体ａが流れ
る。このとき、静止系と回転系のクリアランスが狭けれ
ば狭いほど漏れる流体が少なくなり、より多くのエネル
ギを回転系に伝えることができ、高効率となる。In such a turbine casing 1, during turbine operation, a fluid a such as high-temperature, high-pressure gas or steam flows between the stationary system and the rotating system inside the turbine casing 1. At this time, the smaller the clearance between the stationary system and the rotating system is, the smaller the leaked fluid is, so that more energy can be transmitted to the rotating system, resulting in high efficiency.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記のよ
うな従来のタービン等の車室においては、流体ａの温度
が上昇する過程（起動時）では、上下接続フランジ部２
は、車室の断面上他の一般部に比較して、熱容量が大き
くまた外表面の面積が広く熱の発散量が大きいので温ま
り難く、起動時では上下接続フランジ部２の温度は他の
一般部よりも低い。また、この傾向は起動時のみなら
ず、熱の発散量の違いから定常運転時等にも少なからず
現れる。However, in the case of the above-described conventional cabin of a turbine or the like, the upper and lower connection flange portions 2 are not used in the process of increasing the temperature of the fluid a (at the time of startup).
As compared with other general parts in the cross section of the passenger compartment, it has a large heat capacity, a large outer surface area, and a large amount of heat dissipation, so that it is difficult to warm up. Lower than part. In addition, this tendency appears not only at the time of startup but also at the time of steady operation or the like due to a difference in the amount of heat dissipation.
【０００６】またさらに、上下接続フランジ部２はボル
ト締結されているため、タービン車室の他の一般部とで
は剛性に差が生じている。Further, since the upper and lower connection flange portions 2 are bolted, there is a difference in rigidity from other general portions of the turbine casing.
【０００７】この温度差および剛性差により、タービン
の運転時には上下が締結されたタービン車室１の上下方
向と左右方向の変形量の違いがあり、図６に示すような
オーバル変形と呼ばれる断面が楕円形になる変形を生ず
る。Due to the temperature difference and the rigidity difference, during operation of the turbine, there is a difference in the amount of deformation between the up-down direction and the left-right direction of the turbine casing 1 in which the upper and lower portions are fastened, and a cross section called oval deformation as shown in FIG. Oval deformation occurs.
【０００８】図６はタービン車室１の中心軸方向に見た
模式的断面図であって、図６中、破線で示すのはオーバ
ル変形前のタービン車室１、実線で示すのはオーバル変
形後のタービン車室１であり、オーバル変形によってタ
ービン車室１の上下方向の径Ｄ１と、左右方向の径Ｄ２
が異なることになる。FIG. 6 is a schematic cross-sectional view of the turbine casing 1 as viewed in the central axis direction. In FIG. 6, a broken line indicates the turbine casing 1 before the oval deformation, and a solid line indicates the oval deformation. The turbine casing 1 is located at the rear, and the diameter D1 of the turbine casing 1 in the vertical direction and the diameter D2 of the turbine casing 1 in the horizontal direction due to the oval deformation.
Will be different.
【０００９】一方、ロータ６等の回転系は回転している
ため中心軸より最も離れている点が実質的なロータ外径
となるので、静止系と回転系とのクリアランスにおい
て、楕円の長軸側のクリアランスＣａと短軸側のクリア
ランスＣｂとの間に差が生じる。On the other hand, since the rotating system such as the rotor 6 is rotating, the point farthest from the center axis has a substantial rotor outer diameter. Therefore, in the clearance between the stationary system and the rotating system, the major axis of the ellipse is formed. A difference occurs between the clearance Ca on the side of the side and the clearance Cb on the side of the short axis.
【００１０】従って、車室にオーバル変形が起きること
を想定した場合、運転中の回転系と静止系との接触を回
避するためには、装置構成上のクリアランスを、想定さ
れる短軸側のクリアランスＣｂに合わせて決定しなけれ
ばならず、一方その場合、長軸側のクリアランスＣａは
過大となり、タービンの効率の低下を来すこととなっ
た。Therefore, when it is assumed that an oval deformation occurs in the vehicle cabin, in order to avoid contact between the rotating system and the stationary system during operation, the clearance in the device configuration must be reduced on the assumed short axis side. It must be determined according to the clearance Cb. In that case, however, the clearance Ca on the long axis side becomes excessively large, resulting in a decrease in turbine efficiency.
【００１１】このようなタービン車室１のオーバル変形
の問題に対して、従来は、例えば図５に示すようにター
ビン車室１の上下接続フランジ部２と他の一般部との温
度差を小さくするために、タービン車室１に断熱材７を
卷き付けてくるむことで熱の外部への発散を防ぎ、特に
起動時にも温まりやすくしたりしているが、翼環など複
雑な形状部では断熱材７でくるむことが困難であり、十
分な効果を上げ難かった。In order to solve the problem of the oval deformation of the turbine casing 1, conventionally, as shown in FIG. 5, for example, the temperature difference between the upper and lower connection flange portions 2 of the turbine casing 1 and other general parts is reduced. In order to prevent the heat from escaping to the outside by wrapping the heat insulating material 7 around the turbine casing 1 to make it easier to warm up, especially at the time of startup, in the case of a complicated shape such as a blade ring, It was difficult to wrap with the heat insulating material 7, and it was difficult to achieve a sufficient effect.
【００１２】そして、以上の問題は蒸気タービン、ガス
タービンともに同様であり、タービン部の車室のみなら
ず、ガスタービンにおける圧縮機側の車室においても同
様であった。[0012] The above problems are the same for both the steam turbine and the gas turbine, and not only in the casing of the turbine section, but also in the casing of the gas turbine on the compressor side.
【００１３】本発明はかかる従来のタービン等の車室に
おけるオーバル変形を防止することのできるオーバル変
形防止車室を提供することを課題とするものである。An object of the present invention is to provide an oval deformation preventing cabin capable of preventing oval deformation in such a conventional cabin of a turbine or the like.
【００１４】[0014]
【課題を解決するための手段】（１）本発明は上述の課
題を解決するためになされたものであって、その第１の
手段として、内部にロータが貫装される車室において、
同車室を前記ロータの中心軸回りに４分割し、それぞれ
の分割面を相互のフランジ接続部としてなることを特徴
とするオーバル変形防止車室を提供するものである。Means for Solving the Problems (1) The present invention has been made to solve the above-mentioned problems, and as a first means, in a vehicle interior in which a rotor is inserted,
An object of the invention is to provide an oval deformation-preventing cabin, wherein the cabin is divided into four parts around the center axis of the rotor, and each of the divided surfaces serves as a flange connection part.
【００１５】第１の手段によれば、車室のロータの中心
軸回りの各フランジ接続部と他の一般部との熱容量と熱
の発散の違いからくる温度分布と、構造の違いからくる
剛性の分布を、熱変形上実質的に４方向に等しくするこ
とが可能となり、その結果オーバル変形を起こすことが
なくなる。According to the first means, the temperature distribution resulting from the difference in heat capacity and heat dissipation between each flange connection portion around the central axis of the rotor in the vehicle compartment and other general portions, and the rigidity resulting from the difference in structure. Can be made substantially equal in four directions due to thermal deformation, so that oval deformation does not occur.
【００１６】（２）また、第２の手段として、内部にロ
ータが貫装される車室において、同車室を前記ロータの
中心軸回りに２分割し、それぞれの分割面を相互のフラ
ンジ接続部とするとともに、分割された各車室の外面の
前記フランジ接続部の中間位置に同フランジ接続部と熱
容量と熱発散が同等となるような突設部材を延設固定し
てなることを特徴とするオーバル変形防止車室を提供す
るものである。(2) As a second means, in a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into two around the central axis of the rotor, and each divided surface is connected to each other by flange connection. And a projecting member extending and fixing the same heat capacity and heat dissipation as those of the flange connection portion at an intermediate position of the flange connection portion on the outer surface of each of the divided compartments. To provide a vehicle room for preventing oval deformation.
【００１７】第２の手段によれば、車室のロータの中心
軸回りの各フランジ接続部および突設部材固定部と他の
一般部との熱容量と熱の発散の違いからくる温度分布
を、熱変形上実質的に４方向に等しくすることが可能と
なり、その結果オーバル変形を起こすことがななる。According to the second means, the temperature distribution resulting from the difference in heat capacity and heat dissipation between each flange connection portion and the protruding member fixing portion and the other general portion around the central axis of the rotor in the vehicle compartment, Thermal deformation can be made substantially equal in four directions, so that oval deformation does not occur.
【００１８】（３）第３の手段としては、内部にロータ
が貫装される車室において、内部にロータが貫装される
車室において、同車室を前記ロータの中心軸回りに２分
割し、それぞれの分割面を相互のフランジ接続部とする
とともに、分割された各車室の前記フランジ接続部の中
間位置と同フランジ接続部の近傍位置とに別個に熱媒流
体が供給される伝熱管を設けてなることを特徴とするオ
ーバル変形防止車室を提供するものである。(3) As a third means, in a vehicle compartment in which a rotor is penetrated, in a vehicle compartment in which a rotor is penetrated, the vehicle compartment is divided into two around the central axis of the rotor. Each of the divided surfaces serves as a flange connection portion, and the heat medium fluid is separately supplied to an intermediate position of the flange connection portion and a position near the flange connection portion in each of the divided compartments. An object of the present invention is to provide an oval deformation prevention cabin characterized by having a heat tube.
【００１９】第３の手段によれば、車室のロータの中心
軸回りの各フランジ接続部と他の一般部との熱容量と熱
の発散の違いからくる温度分布を、分割された各車室の
フランジ接続部の中間位置に設けた伝熱管あるいはフラ
ンジ接続部の近傍位置に設けた伝熱管の一方または双方
に別個に熱媒流体を供給することにより、熱変形上実質
的に４方向に等しくすることが可能となり、その結果オ
ーバル変形を起こすことがなくなる。According to the third means, the temperature distribution resulting from the difference between the heat capacity and the heat dissipation between each flange connection portion around the central axis of the rotor in the vehicle compartment and the other general portions is divided into each divided vehicle compartment. By separately supplying the heat transfer fluid to one or both of the heat transfer tube provided at the intermediate position of the flange connection portion and the heat transfer tube provided at the position near the flange connection portion, the heat transfer is substantially equal in four directions. As a result, oval deformation does not occur.
【００２０】（４）第４の手段としては、内部にロータ
が貫装される車室において、同車室を前記ロータの中心
軸回りに２分割し、それぞれの分割面を相互のフランジ
接続部とするとともに、分割された各車室の前記フラン
ジ接続部を含む外面に隙間を介して板状ケースを取り付
け、同隙間が前記外面を覆うとともに同外面との間に密
閉された空間を形成してなること特徴とするオーバル変
形防止車室を提供するものである。(4) As a fourth means, in a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into two around the central axis of the rotor, and each divided surface is connected to a flange connection portion of each other. At the same time, a plate-like case is attached to the outer surface of each of the divided compartments including the flange connection portion via a gap, and the gap covers the outer surface and forms a sealed space between the outer surface and the outer surface. An object of the present invention is to provide an oval deformation-preventing cabin characterized by the following.
【００２１】第４の手段によれば、車室のロータの中心
軸回りの各フランジ接続部と他の一般部との熱容量と熱
の発散の違いからくる温度分布を、分割された各車室の
前記フランジ接続部を含む外面に隙間を介して板状ケー
スを取り付け同隙間が前記外面を覆うとともに同外面と
の間に密閉された空間を形成することにより車室全体の
外面から外部への熱の発散を抑制して、熱変形上実質的
に全周等しくすることが可能となり、その結果オーバル
変形を起こすことがなくなる。According to the fourth means, the temperature distribution resulting from the difference in heat capacity and heat dissipation between each flange connection portion around the central axis of the rotor in the vehicle compartment and other general portions is divided into each of the divided vehicle compartments. A plate-like case is attached to the outer surface including the flange connection portion through a gap, and the gap covers the outer surface and forms a sealed space between the outer surface and the outer surface of the entire vehicle compartment to form an external space. It is possible to suppress heat dissipation and make the entire circumference substantially equal in thermal deformation, and as a result, oval deformation does not occur.
【００２２】（５）第５の手段としては、第４の手段の
オーバル変形防止車室において、前記密閉された空間内
に断熱材が挿入されてなること特徴とするオーバル変形
防止車室を提供するものである。(5) As a fifth means, there is provided an oval deformation prevention casing, wherein a heat insulating material is inserted into the closed space in the oval deformation prevention casing of the fourth means. Is what you do.
【００２３】第５の手段によれば、第４の手段の作用に
加え、密閉された空間内に挿入された断熱材によって断
熱効果がより高いものとなり、さらに車室のオーバル変
形が防止される。According to the fifth means, in addition to the operation of the fourth means, the heat insulating material inserted into the closed space has a higher heat insulating effect, and furthermore, the oval deformation of the vehicle compartment is prevented. .
【００２４】[0024]
【発明の実施の形態】図１に基づき、本発明の実施の第
１形態にかかるオーバル変形防止車室について説明す
る。図１はタービン車室をロータの中心軸方向に見た模
式的な断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, an oval deformation prevention cabin according to a first embodiment of the present invention will be described. FIG. 1 is a schematic sectional view of the turbine casing as viewed in the direction of the center axis of the rotor.
【００２５】なお、前述の従来のものと同じ部分には、
図１においても同一符号を付して示し、相互の関連を明
確にし本実施の形態の理解を容易にするとともに、説明
を省略し、従来例と異なる点を主に説明する。また、こ
のことは後述の他の実施の形態において同様とする。The same parts as those of the above-mentioned conventional one are:
In FIG. 1, the same reference numerals are given to clarify mutual relations to facilitate understanding of the present embodiment, and a description thereof will be omitted, and different points from the conventional example will be mainly described. This is the same in other embodiments described later.
【００２６】図１において、タービン車室１１は水平に
配設されたロータ６の中心軸を通る面で上下方向と左右
方向に４分割され、左上部車室１１ａと、右上部車室１
１ｂと、左下部車室１１ｃと、右下部車室１１ｄとで構
成されている。In FIG. 1, a turbine casing 11 is divided into four parts in the vertical and horizontal directions by a plane passing through the center axis of a horizontally disposed rotor 6, and the upper left casing 11a and the upper right casing 1 are separated.
1b, a lower left casing 11c, and a lower right casing 11d.
【００２７】左上部車室１１ａと右上部車室１１ｂ、お
よび左下部車室１１ｃと右下部車室１１ｄはそれぞれ左
右接続フランジ部１２でボルト３により締結され、左右
が締結されたものがさらに上下接続フランジ部２でボル
ト３により締結されるものである。The upper left casing 11a and the upper right casing 11b, and the lower left casing 11c and the lower right casing 11d are fastened by bolts 3 at left and right connecting flanges 12, respectively. The connection flange portion 2 is fastened by bolts 3.
【００２８】なお、図１においてタービン車室１１は、
水平に配されたロータ６の中心軸を通る水平面と鉛直面
とで上下方向と左右方向に４等分割されたものを例示し
たが、タービン等の構造によって、本実施の形態は必ず
しもそれに限られず、ロータ６の中心軸の水平と方向が
異なるもの、厳密な意味ではロータ６の中心軸を通らな
い面での分割によるものであってもよく、タービン車室
１１がロータ６の中心軸回りに概ね対称的に４分割され
るものである。In FIG. 1, the turbine casing 11 is
Although the horizontal plane passing through the center axis of the horizontally arranged rotor 6 and the vertical plane are illustrated as being divided into four equal parts in the vertical and horizontal directions, the present embodiment is not necessarily limited thereto by a structure such as a turbine. The horizontal direction of the central axis of the rotor 6 may be different from that of the central axis of the rotor 6 or, in a strict sense, by division on a surface that does not pass through the central axis of the rotor 6. It is roughly symmetrically divided into four parts.
【００２９】本実施の形態においては、タービン車室１
１はロータ６の中心軸方向にみた断面上で上下左右対称
の構造となっており、且つロータ６の中心軸回りに、各
フランジ部２、１２と他の一般部との熱容量と熱の発散
の違いからくる温度分布、及び構造の違いからくる剛性
の分布が、熱変形上実質的に上下左右４方向に等しくな
っており、タービン車室１１の上下方向と左右方向との
温度差および剛性差が少なくなるため、オーバル変形を
起こすことがなく、中心軸回りの変形の違いは極めて拘
束されたものとなり、上下、左右の変形量の差は大幅に
低減する。In this embodiment, the turbine casing 1
Reference numeral 1 denotes a structure which is symmetrical in the vertical and horizontal directions on a cross section as viewed in the direction of the central axis of the rotor 6, and has a heat capacity and heat dissipation between the flanges 2 and 12 and other general parts around the central axis of the rotor 6. The temperature distribution resulting from the difference in the temperature and the distribution of the rigidity resulting from the difference in the structure are substantially equal in four directions, up, down, left and right, due to thermal deformation. Since the difference is reduced, the oval deformation does not occur, and the difference in the deformation around the central axis is extremely restricted, and the difference in the amount of deformation in the vertical and horizontal directions is greatly reduced.
【００３０】したがって、従来オーバル変形によって生
じた問題を解消することができる。Therefore, the problem caused by the conventional oval deformation can be solved.
【００３１】また、この実施の形態においてはタービン
車室１が周方向に４つ車室部分１１ａ、１１ｂ、１１
ｃ、１１ｄに分割されるので、各部毎に取替ができる等
のメリットもある。In this embodiment, the turbine casing 1 has four casing sections 11a, 11b, 11 in the circumferential direction.
Since it is divided into c and 11d, there is also an advantage that it can be replaced for each unit.
【００３２】図２に基づき、本発明の実施の第２形態に
かかるオーバル変形防止車室について説明する。図２は
タービン車室を中心軸方向に見た模式的な断面図であ
る。Referring to FIG. 2, an oval deformation prevention cabin according to a second embodiment of the present invention will be described. FIG. 2 is a schematic cross-sectional view of the turbine casing as viewed in the center axis direction.
【００３３】図２において、タービン車室２１は上下に
２分して構成され、上部車室２１ａと下部車室２１ｂと
をそれぞれの上下接続フランジ部２で図示省略するボル
トによって締結した構造となっており、上部車室２１ａ
の上部中央と、下部車室２１ｂの下部中央の外面上に同
材質の突設部材８が固定されている。In FIG. 2, the turbine casing 21 is vertically divided into two parts, and the upper casing 21a and the lower casing 21b are fastened at their upper and lower connecting flanges 2 by bolts (not shown). The upper compartment 21a
A projecting member 8 of the same material is fixed to the upper center of the lower casing 21 and the outer surface of the lower center of the lower casing 21b.
【００３４】なお、図２においてタービン車室２１は、
水平に配されたロータ６の中心軸を通る水平面で上下方
向に２等分割されたものを例示したが、タービン等の構
造によって、本実施の形態は必ずしもそれに限られず、
ロータ６の中心軸の方向が水平と異なるもの、厳密な意
味ではロータ６の中心軸を通らない面での分割によるも
のであってもよく、タービン車室２１がロータ６の中心
軸回りに概ね対称的に２分割されるものにおけるもので
ある。In FIG. 2, the turbine casing 21 is
Although a horizontal plane passing through the center axis of the horizontally arranged rotor 6 is illustrated as being divided into two equal parts in the vertical direction, the present embodiment is not limited to this, depending on the structure of the turbine and the like.
The direction of the center axis of the rotor 6 may be different from the horizontal direction, or in a strict sense, may be a division on a surface that does not pass through the center axis of the rotor 6. This is for the case where the image is symmetrically divided into two.
【００３５】本実施の形態において、突設部材８はター
ビン車室２１に固定された状態で、締結された状態の上
下接続フランジ部２と熱容量および熱発散が実質的に等
しくなるようにその断面を設定するものとし、また、さ
らにタービン車室２１を径方向に拘束する剛性が締結さ
れた状態の上下接続フランジ部２と実質的に等しくする
ことが望ましい。なお、突設部材８はその条件を満たせ
ば必ずしもタービン車室２１と同材質でなくともよい。In the present embodiment, in the state where the projecting member 8 is fixed to the turbine casing 21, its cross section is substantially equal to that of the upper and lower connection flange portions 2 in the fastened state so that the heat capacity and heat dissipation are substantially equal. In addition, it is desirable that the rigidity for restraining the turbine casing 21 in the radial direction is substantially equal to the upper and lower connection flange portions 2 in a fastened state. The projecting member 8 does not necessarily have to be made of the same material as the turbine casing 21 as long as the condition is satisfied.
【００３６】以上のような本実施の形態のタービン車室
２１においては、タービン車室２１はロータ６の中心軸
方向にみた断面上で熱変形上実質的に上下左右対称の構
造となっており、ロータ６の中心軸回りの、タービン車
室２１の各上下接続フランジ部２および突設部材８の固
定部と他の一般部との熱容量と熱の発散の違いからくる
温度分布を、さらには構造の違いからくる剛性の分布
を、熱変形上実質的に４方向に等しくすることが可能と
なり、タービン車室２１の上下方向と左右方向との温度
差および剛性差が少なくなるため、オーバル変形を起こ
すことがなく、中心軸回りの変形の違いは極めて拘束さ
れたものとなり、上下、左右の変形量の差は大幅に低減
する。In the turbine casing 21 of the present embodiment as described above, the turbine casing 21 has a structure which is substantially vertically symmetrical in terms of thermal deformation on a cross section as viewed in the direction of the central axis of the rotor 6. The temperature distribution around the central axis of the rotor 6 due to the difference in heat capacity and heat divergence between the upper and lower connection flange portions 2 of the turbine casing 21 and the fixed portion of the projecting member 8 and other general portions. The distribution of rigidity due to the difference in structure can be made substantially equal in four directions due to thermal deformation, and the temperature difference and rigidity difference between the vertical direction and the horizontal direction of the turbine casing 21 are reduced. The difference between the deformations around the central axis is extremely restricted, and the difference between the vertical and horizontal deformation amounts is greatly reduced.
【００３７】したがって、従来オーバル変形によって生
じた問題を解消することができる。Therefore, the problem caused by the conventional oval deformation can be solved.
【００３８】図３に基づき、本発明の実施の第３形態に
かかるオーバル変形防止車室について説明する。図３は
タービン車室の模式的な斜視図である。Referring to FIG. 3, an oval deformation prevention cabin according to a third embodiment of the present invention will be described. FIG. 3 is a schematic perspective view of the turbine casing.
【００３９】図３において、タービン車室３１は上下に
２分して構成され、上部車室３１ａと下部車室３１ｂと
をそれぞれの上下接続フランジ部２で図示省略するボル
トによって締結した構造となっている。In FIG. 3, the turbine casing 31 is vertically divided into two parts, and the upper casing 31a and the lower casing 31b are fastened by respective upper and lower connection flanges 2 with bolts (not shown). ing.
【００４０】上部車室３１ａの外面上部には上部伝熱管
９ａが接触して取り付けられており、上部車室３１ａの
左右の外面側部には側部伝熱管１０ａが接触して取り付
けられている。一方、下部車室３１ｂの外面下部には下
部伝熱管９ｂが接触して取り付けられており、下部車室
３１ｂの左右の外面側部には側部伝熱管１０ｂが接触し
て取り付けられている。An upper heat transfer tube 9a is mounted in contact with an upper portion of the outer surface of the upper casing 31a, and side heat transfer tubes 10a are mounted in contact with left and right outer side portions of the upper casing 31a. . On the other hand, a lower heat transfer tube 9b is attached in contact with a lower portion of the outer surface of the lower casing 31b, and side heat transfer tubes 10b are attached in contact with left and right outer side portions of the lower casing 31b.
【００４１】上部伝熱管９ａ、下部伝熱管９ｂ、側部伝
熱管１０ａ、側部伝熱管１０ｂはそれぞれ図示しない熱
媒供給装置から熱媒流体の供給を受けるように配管され
ており、熱媒供給装置は、上部車室３１ａの上部及び左
右側部、下部車室３１ｂの下部及び左右側部の適宜な温
度検出器の検出メタル温度に基づき上部伝熱管９ａ、下
部伝熱管９ｂ、側部伝熱管１０ａ、側部伝熱管１０ｂへ
供給する熱媒流体の温度、流量を制御する。The upper heat transfer tube 9a, the lower heat transfer tube 9b, the side heat transfer tube 10a, and the side heat transfer tube 10b are each provided so as to receive a heat medium fluid from a heat medium supply device (not shown). The apparatus includes an upper heat transfer tube 9a, a lower heat transfer tube 9b, and a side heat transfer tube based on metal temperatures detected by appropriate temperature detectors at upper and left and right sides of the upper casing 31a, and at lower and left and right sides of the lower casing 31b. 10a, controls the temperature and flow rate of the heat transfer fluid supplied to the side heat transfer tube 10b.
【００４２】なお、図３においてタービン車室３１は、
水平に配されたロータ６の中心軸を通る水平面で上下方
向に２等分割されたものを例示したが、タービン等の構
造によって、本実施の形態は必ずしもそれに限られず、
ロータ６の中心軸の方向が水平と異なるもの、厳密な意
味ではロータ６の中心軸を通らない面での分割によるも
のであってもよく、タービン車室３１がロータ６の中心
軸回りに概ね対称的に２分割されるものにおけるもので
ある。In FIG. 3, the turbine casing 31 is
Although a horizontal plane passing through the center axis of the horizontally arranged rotor 6 is illustrated as being divided into two equal parts in the vertical direction, the present embodiment is not limited to this, depending on the structure of the turbine and the like.
The direction of the center axis of the rotor 6 may be different from the horizontal direction, or in a strict sense, may be a division on a surface that does not pass through the center axis of the rotor 6. This is for the case where the image is symmetrically divided into two.
【００４３】上記のような本実施の形態においては、タ
ービン車室３１の上下の温度、すなわち上部車室３１ａ
の上部の温度と下部車室３１ｂの下部の温度が、タービ
ン車室３１の左右側部の温度、すなわち上部車室３１ａ
の側部の温度と下部車室３１ｂの側部の温度より高い場
合は、上部伝熱管９ａと下部伝熱管９ｂに低温の冷却熱
媒流体を供給し、あるいは側部伝熱管１０ａと側部伝熱
管１０ｂに高温の加熱熱媒流体を供給する。また、その
両方を行う。（なお、ここで、「車室」の「温度」と
は、車室を構成する部材の温度、車室のメタル温度のこ
とである。）逆に、タービン車室３１の上下の温度が、
タービン車室３１の左右側部の温度より低い場合は、上
部伝熱管９ａと下部伝熱管９ｂに高温の加熱熱媒流体を
供給し、あるいは側部伝熱管１０ａと側部伝熱管１０ｂ
に低温の冷却熱媒流体を供給する。また、その両方を行
う。なお、供給される熱媒流体は水、空気、ガス、蒸気
等適宜なものを用いるものとする。In the present embodiment as described above, the upper and lower temperatures of the turbine casing 31, that is, the upper casing 31 a
The temperature of the upper part of the turbine casing and the temperature of the lower part of the lower casing 31b are the temperatures of the left and right sides of the turbine casing 31, that is, the upper casing 31a.
When the temperature of the side portion is higher than the temperature of the side portion of the lower casing 31b, a low-temperature cooling medium fluid is supplied to the upper heat transfer tube 9a and the lower heat transfer tube 9b, or the side heat transfer tube 10a and the side portion A high-temperature heating medium fluid is supplied to the heat pipe 10b. Also do both. (Here, “temperature” of the “cab” means the temperature of the members constituting the cabin and the metal temperature of the cabin.) On the contrary, the upper and lower temperatures of the turbine casing 31 are:
When the temperature is lower than the left and right sides of the turbine casing 31, a high-temperature heating medium fluid is supplied to the upper heat transfer pipe 9a and the lower heat transfer pipe 9b, or the side heat transfer pipe 10a and the side heat transfer pipe 10b are supplied.
Is supplied with a low-temperature cooling heat transfer fluid. Also do both. Note that the supplied heat medium fluid uses an appropriate fluid such as water, air, gas, or steam.
【００４４】本実施の形態によれば、タービン車室のロ
ータの中心軸回りの、各フランジ接続部と他の一般部と
の熱容量と熱の発散の違いからくる温度分布を、分割さ
れた各車室の外面のフランジ接続部の中間位置に設けた
上部、下部伝熱管９ａ、９ｂ、あるいはフランジ接続部
の近傍位置に設けた側部伝熱管１０ａ、１０ｂの一方ま
たは双方に別個に適宜な熱媒流体を供給することによ
り、熱変形上実質的に４方向に等しくすることが可能と
なり、その結果オーバル変形を起こすことがなく、中心
軸回りの変形の違いは極めて拘束されたものとなり、上
下、左右の変形量の差は大幅に低減し、オーバル変形に
よって生じた問題が解消される。According to the present embodiment, the temperature distribution around the central axis of the rotor of the turbine casing due to the difference in heat capacity and heat dissipation between each flange connection portion and other general portions is divided into respective divided portions. Appropriate heat is separately applied to one or both of the upper and lower heat transfer tubes 9a and 9b provided at intermediate positions of the flange connection portions on the outer surface of the vehicle cabin or the side heat transfer tubes 10a and 10b provided at positions near the flange connection portions. By supplying the medium fluid, thermal deformation can be made substantially equal in four directions. As a result, oval deformation does not occur, and the difference in deformation around the central axis is extremely restricted. The difference between the left and right deformation amounts is greatly reduced, and the problem caused by the oval deformation is eliminated.
【００４５】なお、本実施の形態においては、タービン
車室３１の上下と左右側部との温度の均一化のみなら
ず、上部、下部、左側部、右側部の温度を個々に調整で
きるので、タービン車室３１の上部の温度が下部の温度
より高くなるためにおこるタービ車室の上反り変形であ
る所謂キャットバック変形の防止も行うことが可能であ
る。In the present embodiment, not only can the temperatures of the upper, lower, left and right sides of the turbine casing 31 be equalized, but also the temperatures of the upper, lower, left and right sides can be individually adjusted. It is also possible to prevent so-called cat-back deformation, which is upward deformation of the turbi cab caused by the temperature of the top of the turbine cab 31 being higher than the temperature of the lower cab.
【００４６】なお本実施の形態における上部伝熱管９
ａ、下部伝熱管９ｂ、側部伝熱管１０ａ、側部伝熱管１
０ｂは上記のようにそれぞれタービン車室３１の外面に
接して固定されるものに限定されるものではなく、ター
ビン車室３１との熱交換が可能なように取り付けられ熱
媒流体の供給が行えるように設けられればよく、例えば
タービン車室３１の部材中に組み込まれ、あるいはロー
タ６等回転系との干渉が無いようにタービン車室３１の
内面に固定されるものであってもよい。The upper heat transfer tube 9 in the present embodiment
a, lower heat transfer tube 9b, side heat transfer tube 10a, side heat transfer tube 1
0b is not limited to the one fixed in contact with the outer surface of the turbine casing 31 as described above, but is mounted so as to be capable of exchanging heat with the turbine casing 31 to supply a heat medium fluid. For example, it may be incorporated in a member of the turbine casing 31 or fixed to the inner surface of the turbine casing 31 so as not to interfere with a rotating system such as the rotor 6.
【００４７】図４に基づき、本発明の実施の第４形態に
かかるオーバル変形防止車室について説明する。図４
（ａ）はタービン車室を中心軸方向に見た模式的な断面
図であり、図４（ｂ）は同図（ａ）中Ａ−Ａ矢視縦断面
図である。Referring to FIG. 4, an oval deformation preventing cabin according to a fourth embodiment of the present invention will be described. FIG.
FIG. 4A is a schematic cross-sectional view of the turbine casing viewed in the center axis direction, and FIG. 4B is a vertical cross-sectional view taken along the line AA in FIG.
【００４８】図４において、タービン車室４１は上下に
２分して構成され、上部車室４１ａと下部車室４１ｂと
をそれぞれの上下接続フランジ部２で図示省略するボル
トによって締結した構造となっている。In FIG. 4, the turbine casing 41 is vertically divided into two parts, and the upper casing 41a and the lower casing 41b are fastened to the upper and lower connecting flanges 2 by bolts (not shown) at the respective upper and lower connection flanges 2. ing.
【００４９】４０は上下接続フランジ部２を含めたター
ビン車室４１全体を囲うように取り付けられた板状ケー
スであり、板状ケース４０とタービン車室４１との隙間
４０ａはタービン車室４１全体を被う密閉された空間を
形成する。この密閉された空間には空気等の流体が封入
され、好ましくは複数に区切られている。Numeral 40 denotes a plate-like case which is attached so as to surround the entire turbine casing 41 including the upper and lower connection flanges 2. A gap 40 a between the plate-like case 40 and the turbine casing 41 is equal to the entire turbine casing 41. To form a closed space. A fluid such as air is sealed in the closed space, and is preferably divided into a plurality of sections.
【００５０】板状ケース４０はタービン車室４１にピン
ポイント支持部４０ｂで取り付けられており、板状ケー
ス４０の剛性がタービン車室４１の変形に影響を及ぼさ
ないようにしてある。The plate-like case 40 is attached to the turbine casing 41 by a pinpoint support portion 40b so that the rigidity of the plate-like case 40 does not affect the deformation of the turbine casing 41.
【００５１】なお、図４においてタービン車室４１は、
水平に配されたロータ６の中心軸を通る水平面で上下方
向に２等分割されたものを例示したが、タービン等の構
造によって、本実施の形態は必ずしもそれに限られず、
ロータ６の中心軸の方向が水平と異なるもの、厳密な意
味ではロータ６の中心軸を通らない面での分割によるも
のであってもよく、タービン車室４１がロータ６の中心
軸回りに概ね対称的に２分割されるものにおけるもので
ある。In FIG. 4, the turbine casing 41 is
Although a horizontal plane passing through the center axis of the horizontally arranged rotor 6 is illustrated as being divided into two equal parts in the vertical direction, the present embodiment is not limited to this, depending on the structure of the turbine and the like.
The direction of the center axis of the rotor 6 may be different from the horizontal direction, or in a strict sense, may be a division on a surface that does not pass through the center axis of the rotor 6. This is for the case where the image is symmetrically divided into two.
【００５２】以上のような本実施の形態においては、板
状ケース４０がタービン車室４１が直接外気と接触する
ことを絶つとともに、タービン車室４１と板状ケース４
０との隙間４０ａが形成する空間内の空気等の流体は密
閉されているため、対流の発生を抑制する効果があり、
隙間４０ａ内の自然対流のみが生じ、自然対流の熱伝達
率は小さいことから、タービン車室４１と流体との熱交
換はほとんど行われず、板状ケース４０、板状ケース４
０とタービン車室４１との隙間４０ａ、隙間４０ａ中の
密封流体が、合わせ強力な断熱効果を発揮するものとな
る。In this embodiment as described above, the plate-like case 40 prevents the turbine casing 41 from directly contacting the outside air, and the turbine casing 41 and the plate-like case 4
Since the fluid such as air in the space formed by the gap 40a with zero is sealed, there is an effect of suppressing the generation of convection,
Since only natural convection in the gap 40a occurs and the heat transfer coefficient of natural convection is small, heat exchange between the turbine casing 41 and the fluid hardly occurs, and the plate-like case 40 and the plate-like case 4
The gap 40a between the zero and the turbine casing 41, and the sealed fluid in the gap 40a exhibit a strong heat insulating effect.
【００５３】そのため、上下接続フランジ部２を含めた
タービン車室４１全体の外面から外部への熱の発散が極
めて抑制されるので、タービン起動時および定常運転時
において、タービン車室４１全体の温度差が減少し、タ
ービン車室４１の全周の温度の均一化を図ることができ
る。As a result, the diffusion of heat from the outer surface of the entire turbine casing 41 including the upper and lower connection flange portions 2 to the outside is extremely suppressed. The difference is reduced, and the temperature around the turbine casing 41 can be made uniform.
【００５４】その結果、タービン車室４１はオーバル変
形を起こすことがなく、中心軸回りの変形の違いは極め
て限定されたものとなり、上下、左右の変形量の差は大
幅に低減する。As a result, the turbine casing 41 does not undergo any oval deformation, the difference in deformation around the central axis is extremely limited, and the difference in the amount of vertical and horizontal deformation is greatly reduced.
【００５５】したがって、従来オーバル変形によって生
じた問題を解消することができる。Therefore, the problem caused by the conventional oval deformation can be solved.
【００５６】また本実施の形態においては、従来例で説
明したように断熱材７を卷いて固定するのではなく、板
状ケース４０を被せ、要所で固定するだけなので、ター
ビン車室４１を開ける際も板状ケース４０の着脱は容易
であり、作業上、工数上の問題も少ない。In the present embodiment, since the heat insulating material 7 is not wound and fixed as described in the conventional example, it is merely covered with the plate-shaped case 40 and fixed at important points. At the time of opening, the attachment and detachment of the plate-shaped case 40 is easy, and there is little problem in work and man-hour.
【００５７】なお、本実施の形態において、前記の隙間
４０ａが形成する密閉された空間内にグラスウール、石
膏等の断熱材を挿入したものとしてもよい。この場合、
断熱材は上記空間内に挿入するだけで、板状ケース４０
により極めて容易にタービン車室４１外面全体を被うよ
うに断熱材を装備することができ、断熱材によって断熱
効果がより高まり、オーバル変形防止効果がさらに向上
する。In this embodiment, a heat insulating material such as glass wool or gypsum may be inserted into a closed space formed by the gap 40a. in this case,
The heat insulating material is simply inserted into the space, and the plate-shaped case 40
Accordingly, the heat insulating material can be provided so as to cover the entire outer surface of the turbine casing 41 very easily, and the heat insulating material further enhances the heat insulating effect and further improves the oval deformation preventing effect.
【００５８】以上本発明の実施の形態を説明したが、上
記実施の形態に限定されるものではなく、本発明の範囲
内でその具体的構造に種々の変更を加えてよいことはい
うまでもない。Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above embodiment, and various changes may be made to the specific structure within the scope of the present invention. Absent.
【００５９】また、前述のとおり本発明の実施の形態
は、タービン部の車室の一般的な形態を例に模式的に図
示し説明したが、蒸気タービン、ガスタービンともにそ
の外部車室、内部車室に同様に適用でき、またタービン
部に限らずガスタービンの圧縮機部の車室にも同様に適
用できるものである。Further, as described above, the embodiment of the present invention has been schematically shown and described taking the general form of the casing of the turbine section as an example. The present invention can be similarly applied to a vehicle compartment, and is not limited to a turbine portion, and can be similarly applied to a compressor compartment of a gas turbine.
【００６０】[0060]
【発明の効果】（１） 請求項１の発明によれば、オー
バル変形防止車室を、内部にロータが貫装される車室に
おいて、同車室を前記ロータの中心軸回りに４分割し、
それぞれの分割面を相互のフランジ接続部としてなるよ
うに構成したので、車室のロータの中心軸回りの温度分
布と、剛性の分布を、熱変形上実質的に４方向に等しく
することが可能となり、その結果オーバル変形を起こす
ことがなく、中心軸回りの変形の違いは極めて拘束され
たものとなり、変形量の差は大幅に低減し、オーバル変
形によって生じた問題が解消される。(1) According to the first aspect of the invention, the oval deformation prevention casing is divided into four parts around the center axis of the rotor in the casing in which the rotor is inserted. ,
Since each divided surface is configured as a flange connection part, the temperature distribution around the center axis of the rotor of the vehicle compartment and the rigidity distribution can be made substantially equal in four directions due to thermal deformation. As a result, no oval deformation occurs, the difference in deformation around the central axis is extremely restricted, the difference in deformation amount is greatly reduced, and the problem caused by the oval deformation is solved.
【００６１】また、車室が周方向に４つ車室部分に分割
されるので、各部分毎に取替ができる等のメリットもあ
る。Further, since the vehicle compartment is divided into four compartments in the circumferential direction, there is an advantage that replacement can be made for each portion.
【００６２】（２）請求項２の発明によれば、オーバル
変形防止車室を、内部にロータが貫装される車室におい
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の外面の前記フランジ接続部の中間位
置に同フランジ接続部と熱容量と熱発散が同等となるよ
うな突設部材を延設固定してなるように構成したので、
車室のロータの中心軸回りの温度分布を、熱変形上実質
的に４方向に等しくすることが可能となり、その結果オ
ーバル変形を起こすことがなく、中心軸回りの変形の違
いは極めて拘束されたものとなり、変形量の差は大幅に
低減し、オーバル変形によって生じた問題が解消され
る。(2) According to the second aspect of the present invention, the oval deformation prevention casing is divided into two around the center axis of the rotor in the casing in which the rotor is inserted. And the split surface of
Since the projecting member having the same heat capacity and heat dissipation as the flange connection portion and the heat dissipation is made to be extended and fixed at an intermediate position of the flange connection portion on the outer surface of each divided compartment,
The temperature distribution around the center axis of the rotor of the vehicle cabin can be made substantially equal in four directions due to thermal deformation. As a result, oval deformation does not occur, and the difference in deformation around the center axis is extremely restricted. The difference in the amount of deformation is greatly reduced, and the problem caused by the oval deformation is eliminated.
【００６３】（３）請求項３の発明によれば、オーバル
変形防止車室を、内部にロータが貫装される車室におい
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の前記フランジ接続部の中間位置と同
フランジ接続部の近傍位置とに別個に熱媒流体が供給さ
れる伝熱管を設けてなるように構成したので、車室のロ
ータの中心軸回りの温度分布を、分割された各車室のフ
ランジ接続部の中間位置に設けた伝熱管あるいはフラン
ジ接続部の近傍位置に設けた伝熱管の一方または双方に
別個に熱媒流体を供給することにより、熱変形上実質的
に４方向に等しくすることが可能となり、その結果オー
バル変形を起こすことがなく、中心軸回りの変形の違い
は極めて拘束されたものとなり、変形量の差は大幅に低
減し、オーバル変形によって生じた問題が解消される。(3) According to the third aspect of the invention, the oval deformation prevention casing is divided into two around the center axis of the rotor in the casing in which the rotor is inserted. And the split surface of
Since the heat transfer pipe to which the heat medium fluid is supplied is separately provided at an intermediate position of the flange connection portion and a position near the flange connection portion of each of the divided vehicle compartments, the rotor of the vehicle compartment has The temperature distribution around the central axis is separately supplied to one or both of the heat transfer pipe provided at the intermediate position of the flange connection part of each divided compartment and the heat transfer pipe provided at the position near the flange connection part. By doing so, it is possible to make the thermal deformation substantially equal in four directions, and as a result, oval deformation does not occur, the difference in deformation around the central axis is extremely restricted, and the difference in the amount of deformation is This greatly reduces the problem caused by the oval deformation.
【００６４】また、上記のような構成を用いて、車室の
上部の温度が下部の温度より高くなるためにおこる車室
の上反り変形である所謂キャットバック変形の防止も行
うことが可能である。Further, by using the above-described configuration, it is possible to prevent so-called cat-back deformation, which is a warping deformation of the cabin caused by the temperature of the upper portion of the cabin being higher than the temperature of the lower portion. is there.
【００６５】（４）請求項４の発明によれば、オーバル
変形防止車室を、内部にロータが貫装される車室におい
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の前記フランジ接続部を含む外面に隙
間を介して板状ケースを取り付け、同隙間が前記外面を
覆うとともに同外面との間に密閉された空間を形成して
なるように構成したので、車室のロータの中心軸回りの
温度分布を、分割された各車室の前記フランジ接続部を
含む外面に板状ケースを取り付け外面との間に密閉され
た空間を形成することにより車室全体の外面から外部へ
の熱の発散を抑制して、熱変形上実質的に全周等しくす
ることが可能となり、その結果オーバル変形を起こすこ
とがなく、中心軸回りの変形の違いは極めて拘束された
ものとなり、変形量の差は大幅に低減し、オーバル変形
によって生じた問題が解消される。(4) According to the fourth aspect of the present invention, the oval deformation prevention casing is divided into two around the center axis of the rotor in the casing in which the rotor is inserted. And the split surface of
A plate-like case is attached to the outer surface of each of the divided vehicle compartments including the flange connection portion via a gap, so that the gap covers the outer surface and forms a sealed space between the outer surface and the outer surface. Since the temperature distribution around the center axis of the rotor in the vehicle compartment is configured, a plate-shaped case is attached to the outer surface including the flange connection portion of each of the divided vehicle compartments to form a sealed space between the outer surface and the plate-like case. As a result, it is possible to suppress heat dissipation from the outer surface of the entire vehicle compartment to the outside, and to make the entire circumference substantially equal in terms of thermal deformation, and as a result, oval deformation does not occur, and the difference in deformation around the central axis Is extremely constrained, the difference in the amount of deformation is greatly reduced, and the problem caused by the oval deformation is eliminated.
【００６６】また、板状ケースを被せ、要所で固定する
だけなので、車室を開ける際も板状ケースの着脱は容易
である。Further, since the plate-shaped case is simply covered and fixed at important points, it is easy to attach and detach the plate-shaped case even when opening the cabin.
【００６７】（５）請求項５の発明によれば、請求項４
に記載のオーバル変形防止車室において、前記密閉され
た空間内に断熱材が挿入されてなるように構成したの
で、請求項４の発明の効果に加え、断熱材は上記空間内
に挿入するだけでよいので容易に装備でき、挿入された
断熱材によって断熱効果がより高くなり、さらに車室の
オーバル変形防止効果が向上する。(5) According to the invention of claim 5, claim 4
Since the heat insulating material is inserted into the closed space in the oval deformation preventing vehicle described in the above, in addition to the effect of the invention of claim 4, the heat insulating material is only inserted into the space. The heat insulating effect can be enhanced by the inserted heat insulating material, and the effect of preventing oval deformation of the passenger compartment can be further improved.
【図１】本発明の実施の第１形態にかかるオーバル変形
防止車室の説明図であり、タービン車室をロータの中心
軸方向に見た模式的な断面図である。FIG. 1 is an explanatory diagram of an oval deformation prevention casing according to a first embodiment of the present invention, and is a schematic cross-sectional view of a turbine casing viewed in a direction of a center axis of a rotor.
【図２】本発明の実施の第２形態にかかるオーバル変形
防止車室の説明図であり、タービン車室をロータの中心
軸方向に見た模式的な断面図である。FIG. 2 is an explanatory diagram of an oval deformation prevention casing according to a second embodiment of the present invention, and is a schematic cross-sectional view of a turbine casing viewed in a direction of a center axis of a rotor.
【図３】本発明の実施の第３形態にかかるオーバル変形
防止車室の説明図であり、タービン車室の模式的な斜視
図である。FIG. 3 is an explanatory view of an oval deformation prevention casing according to a third embodiment of the present invention, and is a schematic perspective view of a turbine casing.
【図４】本発明の実施の第４形態にかかるオーバル変形
防止車室の説明図であり、（ａ）はタービン車室をロー
タの中心軸方向に見た模式的な断面図、（ｂ）は（ａ）
中Ａ−Ａ矢視縦断面図である。FIG. 4 is an explanatory view of an oval deformation prevention casing according to a fourth embodiment of the present invention, where (a) is a schematic cross-sectional view of the turbine casing as viewed in a direction of a center axis of a rotor, and (b). Is (a)
FIG. 4 is a vertical sectional view taken along the line AA in FIG.
【図５】従来の一般的なタービン車室の説明図であり、
（ａ）はタービン車室をロータの中心軸方向に見た模式
的な断面図、（ｂ）は（ａ）中Ｂ−Ｂ矢視縦断面図であ
る。FIG. 5 is an explanatory view of a conventional general turbine casing.
(A) is a schematic cross-sectional view of the turbine casing as viewed in the direction of the center axis of the rotor, and (b) is a vertical cross-sectional view taken along the line BB in (a).
【図６】オーバル変形の説明図であり、タービン車室を
ロータの中心軸方向に見た模式的断面図である。FIG. 6 is an explanatory diagram of an oval deformation, and is a schematic cross-sectional view of a turbine casing as viewed in a direction of a center axis of a rotor.
１ タービン車室 １ａ 上部車室 １ｂ 下部車室 ２ 上下接続フランジ部 ３ ボルト ４ 静翼 ５ 動翼 ６ ロータ ７ 断熱材 ８ 突設部材 ９ａ 上部伝熱管 ９ｂ 下部伝熱管 １０ａ 側部伝熱管 １０ｂ 側部伝熱管 １１ タービン車室 １１ａ 左上部車室 １１ｂ 右上部車室 １１ｃ 左下部車室 １１ｄ 右下部車室 １２ 左右接続フランジ部 ２１ タービン車室 ２１ａ 上部車室 ２１ｂ 下部車室 ３１ タービン車室 ３１ａ 上部車室 ３１ｂ 下部車室 ４１ タービン車室 ４１ａ 上部車室 ４１ｂ 下部車室 ４０ 板状ケース ４０ａ 隙間 ４０ｂ ピンポイント支持部 DESCRIPTION OF SYMBOLS 1 Turbine casing 1a Upper casing 1b Lower casing 2 Upper and lower connection flange part 3 Bolt 4 Stator blade 5 Rotor blade 6 Rotor 7 Insulating material 8 Projecting member 9a Upper heat transfer pipe 9b Lower heat transfer pipe 10a Side heat transfer pipe 10b Side part Heat transfer tube 11 Turbine casing 11a Upper left casing 11b Upper right casing 11c Lower lower casing 11d Lower right casing 12 Left and right connection flange 21 Turbine casing 21a Upper casing 21b Lower casing 31 Turbine casing 31a Upper car Chamber 31b Lower casing 41 Turbine casing 41a Upper casing 41b Lower casing 40 Plate case 40a Gap 40b Pinpoint support
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 栄作 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 (72)発明者 赤城 弘一 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂製作所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Eisaku Ito 2-1-1 Shinhama, Arai-machi, Takasago City, Hyogo Prefecture Inside the Takasago Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Koichi Akagi 2-1-1, Araimachi, Takarai City, Hyogo Prefecture No. 1 Inside Mitsubishi Heavy Industries, Ltd. Takasago Factory
Claims (5)
て、同車室を前記ロータの中心軸回りに４分割し、それ
ぞれの分割面を相互のフランジ接続部としてなることを
特徴とするオーバル変形防止車室。An oval characterized in that in a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into four around the central axis of the rotor, and each divided surface serves as a flange connection part for each other. Deformation prevention compartment.
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の外面の前記フランジ接続部の中間位
置に同フランジ接続部と熱容量と熱発散が同等となるよ
うな突設部材を延設固定してなることを特徴とするオー
バル変形防止車室。2. In a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into two around a central axis of the rotor, and each divided surface is used as a flange connection portion.
Oval deformation prevention characterized by extending and fixing a projecting member having the same heat capacity and heat dissipation as the flange connection part and the flange connection part at an intermediate position of the flange connection part on the outer surface of each divided compartment. Cabin.
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の前記フランジ接続部の中間位置と同
フランジ接続部の近傍位置とに別個に熱媒流体が供給さ
れる伝熱管を設けてなることを特徴とするオーバル変形
防止車室。3. In a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into two around the central axis of the rotor, and each of the divided surfaces serves as a flange connection portion.
An oval deformation-prevention cabin, wherein a heat transfer tube to which a heat medium fluid is separately supplied is provided at an intermediate position between the flange connection portions and a position near the flange connection portion in each of the divided compartments.
て、同車室を前記ロータの中心軸回りに２分割し、それ
ぞれの分割面を相互のフランジ接続部とするとともに、
分割された各車室の前記フランジ接続部を含む外面に隙
間を介して板状ケースを取り付け、同隙間が前記外面を
覆うとともに同外面との間に密閉された空間を形成して
なること特徴とするオーバル変形防止車室。4. In a vehicle compartment in which a rotor is inserted, the vehicle compartment is divided into two around a center axis of the rotor, and each divided surface is used as a flange connection portion.
A plate-like case is attached to the outer surface of each of the divided compartments including the flange connection portion via a gap, and the gap forms a sealed space between the outer surface and the outer surface. Oval deformation prevention cabin.
において、前記密閉された空間内に断熱材が挿入されて
なること特徴とするオーバル変形防止車室。5. The oval deformation preventing vehicle room according to claim 4, wherein a heat insulating material is inserted into the closed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000090415A JP2001271606A (en) | 2000-03-29 | 2000-03-29 | Oval deformation preventing casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000090415A JP2001271606A (en) | 2000-03-29 | 2000-03-29 | Oval deformation preventing casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001271606A true JP2001271606A (en) | 2001-10-05 |
Family
ID=18606024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000090415A Pending JP2001271606A (en) | 2000-03-29 | 2000-03-29 | Oval deformation preventing casing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001271606A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014311A (en) * | 2006-06-30 | 2008-01-24 | Alstom Technology Ltd | Fluid machine |
| JP2009174531A (en) * | 2008-01-22 | 2009-08-06 | General Electric Co <Ge> | Turbine casing equipped with fake flange |
| JP2010084762A (en) * | 2008-09-30 | 2010-04-15 | General Electric Co <Ge> | Method and apparatus for matching thermal mass and stiffness of bolted split rings |
| JP2018066362A (en) * | 2016-10-21 | 2018-04-26 | 三菱重工業株式会社 | Steam turbine and temperature control method |
| CN110847983A (en) * | 2019-11-25 | 2020-02-28 | 东方电气集团东方汽轮机有限公司 | Cylinder wall temperature control method |
| JP2021076039A (en) * | 2019-11-06 | 2021-05-20 | 株式会社東芝 | Steam turbine casing, steam turbine, steam turbine system, preheating method for steam turbine casing, and steam turbine casing preheating control system |
-
2000
- 2000-03-29 JP JP2000090415A patent/JP2001271606A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014311A (en) * | 2006-06-30 | 2008-01-24 | Alstom Technology Ltd | Fluid machine |
| JP2009174531A (en) * | 2008-01-22 | 2009-08-06 | General Electric Co <Ge> | Turbine casing equipped with fake flange |
| JP2010084762A (en) * | 2008-09-30 | 2010-04-15 | General Electric Co <Ge> | Method and apparatus for matching thermal mass and stiffness of bolted split rings |
| CN101713303A (en) * | 2008-09-30 | 2010-05-26 | 通用电气公司 | Method and apparatus for matching the thermal mass and stiffness of bolted split rings |
| JP2018066362A (en) * | 2016-10-21 | 2018-04-26 | 三菱重工業株式会社 | Steam turbine and temperature control method |
| JP2021076039A (en) * | 2019-11-06 | 2021-05-20 | 株式会社東芝 | Steam turbine casing, steam turbine, steam turbine system, preheating method for steam turbine casing, and steam turbine casing preheating control system |
| CN110847983A (en) * | 2019-11-25 | 2020-02-28 | 东方电气集团东方汽轮机有限公司 | Cylinder wall temperature control method |
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