JP4241867B2 - Equipment installation equipment - Google Patents

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JP4241867B2
JP4241867B2 JP2007272157A JP2007272157A JP4241867B2 JP 4241867 B2 JP4241867 B2 JP 4241867B2 JP 2007272157 A JP2007272157 A JP 2007272157A JP 2007272157 A JP2007272157 A JP 2007272157A JP 4241867 B2 JP4241867 B2 JP 4241867B2
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steel
turbine
generator
bearing
pressure turbine
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JP2008032025A (en
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龍太郎 馬越
哲 小西
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Mitsubishi Heavy Industries Ltd
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Description

本発明は、蒸気タービンプラントにおけるタービン発電機、ディーゼル発電機、多段圧縮機等の複数台の機器を１個の鋼製架台上に固定してなる機器の据付装置における鋼製架台の構造に関する。   The present invention relates to a structure of a steel pedestal in a device installation apparatus in which a plurality of devices such as a turbine generator, a diesel generator, and a multistage compressor in a steam turbine plant are fixed on one steel pedestal.

図３は、蒸気タービン及びこれに駆動される発電機（以下タービン発電機という）の１例を示す概略側面図である。   FIG. 3 is a schematic side view showing an example of a steam turbine and a generator driven by the steam turbine (hereinafter referred to as a turbine generator).

図３に示すタービン発電機は、タンデム型低圧４フロー再熱タービンであり、図３において、２は高圧タービン、３は中圧タービン、４は第１低圧タービン、５は第２低圧タービン、６は発電機、１０は復水器である。また６１は高圧タービン２の回転軸である高圧タービン軸、６２は中圧タービン３の回転軸である中圧タービン軸、６３ａ及び６３ｂは第１低圧タービン４及び第２低圧タービン５の回転軸である低圧タービン軸、６４は発電機６の回転軸である発電機軸であり、これらの各軸を串状に連結して、タンデム型タービン発電機を構成し、タービン架台５１１（図１７参照）上に取付けている。 The turbine generator shown in FIG. 3 is a tandem low-pressure four-flow reheat turbine. In FIG. 3, 2 is a high-pressure turbine, 3 is a medium-pressure turbine, 4 is a first low-pressure turbine, 5 is a second low-pressure turbine, 6 Is a generator and 10 is a condenser. Reference numeral 61 denotes a high-pressure turbine shaft that is a rotating shaft of the high-pressure turbine 2, 62 denotes an intermediate-pressure turbine shaft that is a rotating shaft of the intermediate-pressure turbine 3, and 63 a and 63 b denote rotating shafts of the first low-pressure turbine 4 and the second low-pressure turbine 5. A low-pressure turbine shaft 64 is a generator shaft that is a rotating shaft of the generator 6, and these shafts are connected in a skewer shape to constitute a tandem turbine generator on the turbine mount 511 (see FIG. 17) . Installed on.

２１及び２２は上記高圧タービン軸６１を支持する No.１（＃１）軸受及び No.２（＃２）軸受、２３及び２４は上記中圧タービン軸６２を支持する No.３（＃３）軸受及び No.４（＃４）軸受、２５及び２６は上記低圧タービン軸６３ａを支持する No.５（＃５）軸受及び No.６（＃６）軸受、２７及び２８は上記低圧タービン軸６３ｂを支持する No.７（＃７）軸受及び No.８（＃８）軸受、２９ａ及び２９ｂは上記発電機軸６４を支持する No.９（＃１０）軸受及び No.１０（＃１０）軸受である。   21 and 22 are No. 1 (# 1) bearings and No. 2 (# 2) bearings that support the high-pressure turbine shaft 61, and 23 and 24 are No. 3 (# 3) that support the intermediate-pressure turbine shaft 62. Bearings and No. 4 (# 4) bearings, 25 and 26 support the low pressure turbine shaft 63a, No. 5 (# 5) bearings and No. 6 (# 6) bearings, and 27 and 28 indicate the low pressure turbine shaft 63b. No. 7 (# 7) bearing and No. 8 (# 8) bearing, and 29a and 29b are No. 9 (# 10) bearing and No. 10 (# 10) bearing that support the generator shaft 64. is there.

そして、上記タービン発電機の各軸受２１〜２８，２９ａ，２９ｂは、高圧タービン２、中圧タービン３、第１低圧タービン４、第２低圧タービン５及び発電機６の重量が、これら各軸受にその軸受容量に応じて負荷されるように、各軸受の上下方向位置をシム等を介して調整されて、つまりアライメントを施されて上記タービン架台５１１（図１７参照）に固定されている。 And each bearing 21-28, 29a, 29b of the said turbine generator has the weight of the high pressure turbine 2, the intermediate pressure turbine 3, the 1st low pressure turbine 4, the 2nd low pressure turbine 5, and the generator 6 in these each bearing. The vertical position of each bearing is adjusted via a shim or the like so as to be loaded according to the bearing capacity, that is, aligned and fixed to the turbine mount 511 (see FIG. 17) .

図１７は従来のタービン発電機における低圧タービン及び復水器を軸平行方向に視たる図（図３のＡ−Ａ矢視図）である。図１７に示すように、上記復水器１０は第１，第２低圧タービン４，５の下部に伸縮継手７１を介して取付けられている。そして上記復水器１０はその下面を基礎架台５０に固定され、上記のようにタービン架台５１１に取付けられた第１，第２低圧タービン４，５との熱膨張差は上記伸縮継手７１によって吸収するようになっている。 FIG. 17 is a view (a view taken along the line AA in FIG. 3) of a low-pressure turbine and a condenser in a conventional turbine generator as viewed in an axial parallel direction. As shown in FIG. 17, the condenser 10 is attached to lower portions of the first and second low-pressure turbines 4 and 5 via expansion joints 71. The condenser 10 has its lower surface fixed to the foundation frame 50, and the expansion joint 71 absorbs the difference in thermal expansion between the first and second low-pressure turbines 4 and 5 attached to the turbine frame 511 as described above. It is supposed to be.

また、図７は鋼製の共通架台（鋼製架台１）上に取付けたタービン発電機の１例を示す。図７におけるタービン発電機の構成及び軸受の配置は図３と同様であり、図３と同一の部材は同一の符号にて示す。尚、１１１はタービン発電機用の計器である。 FIG. 7 shows an example of a turbine generator mounted on a common steel stand (steel stand 1). The configuration of the turbine generator and the arrangement of the bearings in FIG. 7 are the same as those in FIG. 3, and the same members as those in FIG. 3 are denoted by the same reference numerals. Reference numeral 111 denotes a turbine generator instrument.

図７に示すように、タービン発電機を共通の鋼製架台１に取付けて据付けるようにした据付装置にあっては、基礎架台５０上に弾性支持した鋼製架台１上にタービン発電機を固定していることから、後述する理由により、図１７に示すような伸縮継手７１を設けていない。   As shown in FIG. 7, in the installation apparatus in which the turbine generator is installed on the common steel gantry 1, the turbine generator is mounted on the steel gantry 1 elastically supported on the foundation gantry 50. Since it is fixed, the expansion joint 71 as shown in FIG. 17 is not provided for the reason described later.

しかしながら、図１７に示されるような従来の復水器の取付構造及びかかる取付構造に基づく軸受のアライメント方法による場合は次のような問題点がある。 However, the conventional condenser mounting structure as shown in FIG. 17 and the bearing alignment method based on the mounting structure have the following problems.

上記タービン発電機の運転時において、復水器１０内の真空による下向きの真空荷重が第１，第２低圧タービン４，５及び復水器１０に作用する。図１７に示す従来のものにおいては、低圧タービン４，５と復水器１０との間に伸縮継手７１が介装されているため、低圧タービン側に掛かる上記真空荷重は低圧タービン４，５が固定されたタービン架台５１１で受けている。従って、タービン架台５１１に鋼製架台１を用いる場合には、鋼製架台１の剛性がコンクリート架台等よりも小さく、変形能が大きいことから、鋼製架台１のみで上記真空荷重を受けるのが強度上困難である。このため、上記鋼製架台１を用いる場合には、上記伸縮継手７１を設けずに、低圧タービン４，５と復水器１０とを直結することにより上記真空荷重は鋼製架台１及び復水器１０のいずれにも作用しない。 During the operation of the turbine generator, a downward vacuum load due to the vacuum in the condenser 10 acts on the first and second low-pressure turbines 4 and 5 and the condenser 10. In the conventional system shown in FIG. 17 , since the expansion joint 71 is interposed between the low pressure turbines 4 and 5 and the condenser 10, the vacuum load applied to the low pressure turbine side is reduced by the low pressure turbines 4 and 5. It is received by a fixed turbine mount 511. Therefore, when the steel mount 1 is used for the turbine mount 511, the steel mount 1 is less rigid than the concrete mount and has a large deformability. It is difficult in strength. Therefore, when the steel mount 1 is used, the vacuum load is reduced by connecting the low pressure turbines 4 and 5 and the condenser 10 directly without providing the expansion joint 71. It does not act on any of the vessels 10.

然るに、上記のように、鋼製架台１にタービン発電機を据付け、伸縮継手７１を用いない据付構造にあっては、上記タービン発電機の運転中において、上記復水器１０は上方に熱膨張するとともに、タービン発電機が固定される鋼製架台１も鋼材からなるため、コンクリート架台に較べて架台１自体の熱変形が大きくなる。このため、従来の方法のように、タービン発電機の冷態時における軸受荷重をベースとしてアライメントを行なう場合は、タービン発電機の運転中においては、上記復水器１０の熱膨張や鋼製架台の熱変形及び上記真空荷重による変形によって、架台１の上記各軸受２１〜２８，２９ａ，２９ｂ取付部が上下に変位して、各軸受の軸受荷重が、当初のアライメント時から変化し、軸受荷重の不均一が生じて軸受の摩耗や焼付きを引き起こすこととなる。   However, as described above, in the installation structure in which the turbine generator is installed on the steel mount 1 and the expansion joint 71 is not used, the condenser 10 is thermally expanded upward during the operation of the turbine generator. At the same time, since the steel gantry 1 to which the turbine generator is fixed is also made of steel, the cradle 1 itself is more thermally deformed than the concrete gantry. For this reason, when the alignment is performed based on the bearing load when the turbine generator is cold as in the conventional method, during the operation of the turbine generator, the thermal expansion of the condenser 10 or the steel frame is performed. The bearings 21 to 28, 29a, and 29b of the gantry 1 are displaced up and down due to the thermal deformation and the deformation due to the vacuum load, and the bearing load of each bearing is changed from the initial alignment time. This causes non-uniformity of the bearing and causes wear and seizure of the bearing.

従って本発明に係る他の第１検討課題は、鋼製架台によりタービン発電機を支持するようにした蒸気タービンプラントにおいて、復水器の真空荷重を鋼製架台の過大な変形を伴うことなく支持可能とするとともに、復水器の熱膨張や鋼製架台の熱変形による軸受荷重の過大化及びこれに伴う軸受の摩耗焼付き等の不具合の発生を防止することにある。   Accordingly, another first study subject according to the present invention is to support the vacuum load of the condenser without excessive deformation of the steel gantry in the steam turbine plant in which the turbine generator is supported by the steel gantry. It is possible to prevent the occurrence of problems such as excessive bearing load due to the thermal expansion of the condenser and thermal deformation of the steel pedestal, and the accompanying bearing seizure of the bearing.

次に、図７に示されるような、鋼製架台１上に蒸気タービンプラントの各機器を固定した型式の蒸気タービンプラントにあっては、鋼製架台１がコンクリート架台等に較べて熱伝導率が格段に大きく、熱によって変形し易い。   Next, in a steam turbine plant of a type in which each device of the steam turbine plant is fixed on a steel mount 1, as shown in FIG. 7, the steel mount 1 has a higher thermal conductivity than a concrete mount. Is remarkably large and easily deformed by heat.

このため、上記蒸気タービンプラントにおいては、蒸気配管や各軸受部７，８，９，２１１等を潤滑して昇温された潤滑油が通流する排油管からの熱が鋼製架台１に伝達され、これによって鋼製架台１が熱変形を起こし易くなる。 Therefore, in the steam turbine plant, heat from the oil drain pipe through which the lubricating oil heated by lubricating the steam pipes and the bearings 7 , 8 , 9, 211, etc. flows is transmitted to the steel gantry 1. As a result, the steel mount 1 is likely to be thermally deformed.

然るに、上記蒸気タービンプラントにおいては、従来、蒸気配管はタービンの回転中心に関して左、右方向にほぼ対称に配置されている一方で、上記排油管は各軸受部から出された枝管を上記架台１の１側に取付けられ、前後に延設された排油主管を通して油タンクに戻される構造となっている。   However, in the steam turbine plant, conventionally, the steam pipes are arranged substantially symmetrically in the left and right directions with respect to the rotation center of the turbine, while the oil drain pipes have branch pipes extending from the respective bearing portions. 1 is attached to one side, and is configured to be returned to the oil tank through a drained oil main pipe extending in the front-rear direction.

このため、上記従来の蒸気タービンプラントにあっては、排油主管が鋼製架台１の片側に配設されているため、鋼製架台１は、同排油主管が取付けられた側の熱変形がこれと反対側よりも大きくなって、タービン回転軸心に関して非対称に変形することとなり、軸受のアライメントの変動や軸振動の増大等の不具合を誘発する。   For this reason, in the conventional steam turbine plant, since the oil drain main pipe is disposed on one side of the steel gantry 1, the steel gantry 1 is thermally deformed on the side where the oil drain main pipe is attached. Becomes larger than the opposite side and deforms asymmetrically with respect to the turbine rotation axis, causing problems such as fluctuations in bearing alignment and increase in shaft vibration.

従って本発明に係る他の第２検討課題は、鋼製架台上に蒸気タービン及び発電機を取付けてなる蒸気タービンプラントにおいて、鋼製架台周りの配管の不均一による鋼製架台の片寄った熱変形及びこれによって引き起される軸受アライメントの変動や軸振動の増大等の不具合の発生を防止することにある。   Therefore, another second examination subject according to the present invention is that, in a steam turbine plant in which a steam turbine and a generator are mounted on a steel mount, the thermal deformation of the steel mount offset due to uneven piping around the steel mount. Another object of the present invention is to prevent the occurrence of problems such as changes in bearing alignment and increased shaft vibration caused by this.

次に、ガスタービンあるいは蒸気タービン（以下タービンという）で発電機を駆動するタービン発電プラントにおいては、タービンと発電機とを連結した据付状態における全長が長く、かつ大重量であるため、発電所の据付構造は高剛性の据付構造となっている。   Next, in a turbine power plant in which a generator is driven by a gas turbine or a steam turbine (hereinafter referred to as a turbine), the total length in the installed state in which the turbine and the generator are connected is long and heavy. The installation structure is a highly rigid installation structure.

図１８は上記タービン発電プラントの据付構造の１例を示す概略正面図（回転軸心に平行方向に観たる図）であり、図１８において１１０は発電所の建屋、１１１は同建屋内の機器操作用床部、１１２はコンクリート架台である。１１３は上記タービンと発電機とを直結してなるタービン発電機であり、同タービン発電機１１３は上記コンクリート架台１１２上に固定されている。 FIG. 18 is a schematic front view showing one example of the installation structure of the turbine power plant (viewed in a direction parallel to the rotation axis). In FIG. 18, 110 is a building of the power plant, and 111 is equipment in the same building. The operation floor portion 112 is a concrete mount. A turbine generator 113 is formed by directly connecting the turbine and the generator. The turbine generator 113 is fixed on the concrete mount 112.

上記タービン発電機１１３を製作工場にて製作し、船舶車両等の輸送機関で発電所まで運搬して、建屋１１０内の据付場所に据付けるにあたっては、従来は製作工場内でタービン及び発電機を製作し、両者を工場内の運転架台上にて連結して所定の性能及び強度確認試験運転を行った後、上記運転架台からタービン及び発電機を取外し上記輸送機関に搭載して上記据付場所まで運搬し、図１８に示すように、タービン及び発電機をコンクリート架台１１２上においてアライメント調整等の所定の調整を行って連結し、上記架台１１２上に固定していた。   When the turbine generator 113 is manufactured at a manufacturing plant, transported to a power plant by a transportation vehicle such as a marine vehicle, and installed at the installation location in the building 110, conventionally, the turbine and the generator are installed in the manufacturing plant. After manufacturing and connecting the two on the operation platform in the factory and performing the specified performance and strength confirmation test operation, the turbine and the generator are removed from the operation platform and mounted on the transportation system to the installation location. As shown in FIG. 18, the turbine and the generator are connected by performing predetermined adjustment such as alignment adjustment on the concrete mount 112, and fixed on the mount 112.

しかしながら、上記従来の方法にあっては、製作工場内の運転架台上でタービンと発電機とをアライメント調整等の所定の調整を行なって連結して各種試験運転を行なった後、両者を切り離して輸送機関に搭載、運搬し、据付場所（発電所の建屋１１０内）のコンクリート架台１１２において再度タービン及び発電機を上記所定の調整を行って据付けるため、据付場所での据付工事及び製作工場から据付場所までの輸送に多大な工数を要するとともに、他の関連機器の据付工事と錯綜して据付作業能率が低下するという問題点を有している。   However, in the above conventional method, the turbine and the generator are connected by performing predetermined adjustments such as alignment adjustment on the operation stand in the production factory, and after performing various test operations, the two are disconnected. Since the turbine and the generator are installed with the above-mentioned predetermined adjustments again on the concrete mount 112 at the installation location (in the power plant building 110), they are installed and transported in the transportation facility. In addition to requiring a great number of man-hours for transportation to the installation site, there is a problem that the installation work efficiency is reduced due to the complicated construction of other related equipment.

また上記従来の方法にあっては、タービン発電機１１３をコンクリート架台１１２上に固定するため、地震時の発生荷重が大きくなり、地震の影響を直接受け易い。   Further, in the above conventional method, since the turbine generator 113 is fixed on the concrete mount 112, the generated load at the time of the earthquake becomes large and it is easy to be directly affected by the earthquake.

そこで本発明の発明者らは特願平１０−１７６１６３号にて上記複数の機器を単一の鋼製架台に取付け、固定して双方が一体化されたモジュール体となし、同モジュール体を据付場所の建屋等の据付用構造物に固定する方法を提案した。   Therefore, the inventors of the present invention, in Japanese Patent Application No. 10-176163, attach the above-mentioned plurality of devices to a single steel pedestal and fix them to form a module body in which both are integrated, and the module body is installed. A method of fixing to the building structure such as the building of the place was proposed.

しかしながら上記方法は複数の機器を単一の鋼製架台に取付けて、輸送し据付ける方法であるため、低圧４フローの再熱蒸気タービン等の軸方向に連結される機器の数が多く、全長の長いプラントの場合には適用困難なことがある。   However, since the above method is a method in which a plurality of devices are mounted on a single steel pedestal, transported and installed, the number of devices connected in the axial direction such as a low-pressure 4-flow reheat steam turbine is large. In the case of a long plant, it may be difficult to apply.

従って、本発明に係る他の第３検討課題は、軸方向に連結される機器の数が多く、全長の長いプラントであっても、上記機器を鋼製架台に取付けての輸送及び据付工事の工数を従来方法よりも大幅に低減するとともに、他の工事との錯綜等を回避して据付作業能率を向上し、輸送、据付コストを低減することにある。   Therefore, another third examination subject according to the present invention is that the number of devices connected in the axial direction is large, and even in a plant with a long overall length, transportation and installation work with the above devices mounted on a steel mount In addition to significantly reducing the number of man-hours compared to the conventional method, it is intended to improve the installation work efficiency by avoiding complications with other works, and to reduce transportation and installation costs.

次に、近年、火力プラントにおいては、蒸気タービン及び発電機を１個の鋼製架台上に固定し、同鋼製架台を複数のばね機構及び粘性摩擦ダンパからなる制振ダンパを介して基礎架台上に据付ける据付方法が採用されてきている。   Next, in recent years, in a thermal power plant, a steam turbine and a generator are fixed on a single steel pedestal, and the steel pedestal is connected to a basic gantry via a vibration damper comprising a plurality of spring mechanisms and viscous friction dampers. The installation method which installs on the top has been adopted.

かかる鋼製架台を用いた蒸気タービン及び発電機（以下タービン発電機と称する）の一例としては、図７に示すように、多数の鋼板を溶接して構成された鋼製架台１上に、高圧タービン２、中圧タービン３、２組の低圧タービン４，５及び発電機６を直列に配置して、これらを上記架台１に固定してなるものがある。尚、１０は上記２組の低圧タービン４，５の下部に連結された復水器である。   As an example of a steam turbine and a generator (hereinafter referred to as a turbine generator) using such a steel gantry, as shown in FIG. 7, a high pressure is provided on a steel gantry 1 formed by welding a number of steel plates. There is a turbine 2, an intermediate pressure turbine 3, two sets of low pressure turbines 4, 5 and a generator 6 arranged in series and fixed to the gantry 1. Reference numeral 10 denotes a condenser connected to the lower part of the two sets of low-pressure turbines 4 and 5.

また、７は中圧タービンと第１段低圧タービン４との間の軸受部、８は第１段低圧タービン４と第２段低圧タービン５との間の軸受部、９は第２段低圧タービン５と発電機６との間の軸受部である。さらに、１１１は上記タービン発電機の各種計測用の計器で、同計器１１１は上記鋼製架台１の上記高圧タービン２近傍の位置に固定されている。   7 is a bearing portion between the intermediate pressure turbine and the first stage low pressure turbine 4, 8 is a bearing portion between the first stage low pressure turbine 4 and the second stage low pressure turbine 5, and 9 is a second stage low pressure turbine. 5 is a bearing portion between 5 and the generator 6. Further, reference numeral 111 denotes an instrument for various measurements of the turbine generator. The instrument 111 is fixed at a position in the vicinity of the high-pressure turbine 2 of the steel mount 1.

図１９〜図２０には上記鋼製架台２０１の従来の１例が示されており、図１９は平面視図（図２０のＢ−Ｂ矢視図）、図２０は図１９のＡ−Ａ矢視図である。図１９〜図２０において、２１１はタービン２〜５を取付けるためのスペースであるタービン取付用空間、２２１は発電機６を取付けるためのスペースである発電機取付用空間である。   19 to 20 show a conventional example of the steel pedestal 201. FIG. 19 is a plan view (viewed along arrow BB in FIG. 20), and FIG. 20 is an AA view in FIG. It is an arrow view. 19 to 20, reference numeral 211 denotes a turbine mounting space that is a space for mounting the turbines 2 to 5, and 221 is a generator mounting space that is a space for mounting the generator 6.

７１は床板、７２は底板、７３は前面板、７４は後面板、７５，７６は側面板であり、この鋼製架台２０は、上記各板を鋼板で構成し、この鋼板をそのまま直接にあるいは所定の形状に折り曲げて溶接し、内部に強度部材としての複数の鋼板製リブ７７を適宜設けて上記各板に溶接することによって箱状に形成されている。   71 is a floor plate, 72 is a bottom plate, 73 is a front plate, 74 is a rear plate, 75 and 76 are side plates, and this steel mount 20 is configured by forming each plate from a steel plate directly or directly. A plurality of steel plate ribs 77 as strength members are appropriately provided inside and welded to the respective plates by being bent into a predetermined shape and welded.

しかしながら図１９〜図２０に示されるような従来の鋼製架台を用いるタービン発電機の据付構造には次のような問題点がある。   However, the conventional turbine generator installation structure using the steel mount as shown in FIGS. 19 to 20 has the following problems.

鋼製架台２０１は、上記のように多数の鋼板を溶接して成り、コンクリート架台等に較べて軽量でかつ所要の剛性を備えているが、鋼板の溶接構造であるため、同鋼製架台２０１自体の固有振動数が高くなり、タービン発電機の定格回転数に近い値になる。   The steel cradle 201 is formed by welding a number of steel plates as described above, and is lighter and has a required rigidity as compared with a concrete cradle or the like. The natural frequency of itself becomes high and becomes a value close to the rated rotational speed of the turbine generator.

このため、上記従来の鋼製架台２０１を用いた据付構造にあっては、鋼製架台２０１の固有振動数とタービン発電機の軸回転数とが同期することがあり、かかる現象が発生すると、タービン発電機の軸振動と鋼製架台２０１の固有振動との共振が発生し、軸受の摩耗あるいは焼付きや、回転軸の破損等を引き起す。   For this reason, in the installation structure using the conventional steel cradle 201, the natural frequency of the steel cradle 201 and the shaft rotation speed of the turbine generator may be synchronized. Resonance between the shaft vibration of the turbine generator and the natural vibration of the steel pedestal 201 occurs, causing bearing wear or seizure, damage to the rotating shaft, and the like.

従って本発明の目的は、鋼製架台を用いた機器の据付装置において、鋼製架台の剛性を上げて固有振動数を上昇させ、鋼製架台の固有運動数が軸回転数と同期するのを回避して共振の発生を防止し、軸受の摩耗、焼付きや軸の損傷の発生を防止することにある。   Accordingly, an object of the present invention is to increase the natural frequency by increasing the rigidity of the steel pedestal in the equipment installation apparatus using the steel pedestal so that the natural frequency of the steel pedestal is synchronized with the shaft rotational speed. It is to avoid the occurrence of resonance by avoiding bearing wear, seizure and shaft damage.

特開２０００−００９２９３号（特願平１０−１７６１６３号）公報JP 2000-009293 A (Japanese Patent Application No. 10-176163)

本発明は上記を鑑み、鋼製架台を用いた機器の据付装置において、鋼製架台の剛性を上げて固有振動数を上昇させ、鋼製架台の固有運動数が軸回転数と同期するのを回避して共振の発生を防止し、軸受の摩耗、焼付きや軸の損傷の発生を防止することを課題とする。   In view of the above, the present invention, in an apparatus installation apparatus using a steel cradle, increases the natural frequency by increasing the rigidity of the steel cradle, and the natural frequency of the steel cradle is synchronized with the shaft rotational speed. It is an object to prevent the occurrence of resonance by avoiding the occurrence of bearing wear, seizure, and shaft damage.

本発明は上記のような課題を解決するものであり、上記の目的を達成する手段は請求項１〜４に記載の通りである。 The present invention solves the above-mentioned problems, and means for achieving the above object is as described in claims 1 to 4 .

即ち請求項１の手段は、タービン、発電機を含む複数の機器を、鋼材を溶接してなる鋼製架台に固定するようにした機器の据付装置において、上記鋼製架台は複数のばね機構及び制振ダンパを介して基礎架台に防振・耐震支持され、少なくとも上記機器の軸受部の下方に位置する空間部に、同鋼製架台の軸線方向には所定の部分の長さで、幅方向には同鋼製架台の全幅に亘ってコンクリートを充填して構成されたことにある。
また、請求項２の手段は、請求項１に記載の機器の据付装置において、上記鋼製架台は、前記タービンを取付けるためのタービン取付用空間、及び前記発電機を取付けるための発電機取付用空間を備え、コンクリートを充填した前記空間部は、前記鋼製架台の上側の床板の下面と下側の底板の上面との間の空間部であることを特徴とする機器の据付装置である。 In other words, the means of claim 1 is a device installation apparatus in which a plurality of devices including a turbine and a generator are fixed to a steel mount formed by welding steel materials, wherein the steel mount includes a plurality of spring mechanisms and It is vibration-proof and earthquake-proof supported by the foundation gantry via a vibration damper, and at least a space located below the bearing part of the above equipment in the axial direction of the steel gantry with the length of a predetermined part in the width direction Is constructed by filling concrete over the entire width of the steel frame.
According to a second aspect of the present invention, there is provided the equipment installation apparatus according to the first aspect, wherein the steel pedestal includes a turbine mounting space for mounting the turbine and a generator mounting for mounting the generator. The apparatus according to claim 1, wherein the space portion provided with a space and filled with concrete is a space portion between a lower surface of an upper floor plate and an upper surface of a lower bottom plate of the steel mount.

上記手段によれば、鋼製架台の、機器の重量が集中して負荷される軸受部の下方に位置する空間部にコンクリートが充填されているため、上記コンクリート充填空間部の剛性が増大する。これにより、上記鋼製架台は苛酷な荷重条件下にある、軸受部を支持する部位の変形が抑制されるとともに、上記剛性の増大によって固有振動数が上昇し、上記鋼製架台の固有振動数を機器の軸回転数と同期することなく、軸回転数よりも常に上位に保持することが可能となる。従って、上記手段によれば、鋼製架台の固有振動数と機器の軸回転数との同期による共振の発生を防止することができる。   According to the above means, since the concrete is filled in the space portion located below the bearing portion on which the weight of the equipment is concentrated and loaded, the rigidity of the concrete filling space portion is increased. As a result, deformation of the portion that supports the bearing portion under severe load conditions is suppressed, and the natural frequency increases due to the increase in rigidity, so that the natural frequency of the steel mount is increased. Can be always kept higher than the shaft rotational speed without synchronizing with the shaft rotational speed of the device. Therefore, according to the above means, it is possible to prevent the occurrence of resonance due to the synchronization between the natural frequency of the steel mount and the shaft rotational speed of the device.

請求項３の手段は、請求項１又は２の手段に加えて上記鋼製架台は、上記軸受部の下方空間に連なる長手方向前後の空間部にコンクリートを充填してなる。 According to a third aspect of the present invention, in addition to the means of the first or second aspect , the steel pedestal is formed by filling a space portion in the longitudinal direction continuous with the space below the bearing portion with concrete.

上記手段によれば、機器の軸受部におけるローリング荷重の支持部の剛性が増大し、ローリング荷重に対する鋼製架台の強度が増大する。   According to the above means, the rigidity of the support portion of the rolling load in the bearing portion of the device is increased, and the strength of the steel pedestal against the rolling load is increased.

請求項４の手段は、請求項１ないし３のいずれかの手段に加えて上記鋼製架台は、上記機器に付設される計器の取付部の下方に位置する空間部にコンクリートを充填してなる。 According to a fourth aspect of the present invention, in addition to the means of any one of the first to third aspects , the steel mount is formed by filling concrete in a space located below a mounting portion of a meter attached to the device. .

上記手段によれば、鋼製架台の、計器の重量を支持する部位の剛性が増大し、計器の重量による架台の局部的な変形が防止される。   According to the above means, the rigidity of the portion of the steel cradle that supports the weight of the instrument is increased, and local deformation of the cradle due to the weight of the instrument is prevented.

本発明は以上のように構成されており、請求項１〜４の発明によれば、以下の効果を奏する。 This invention is comprised as mentioned above and according to invention of Claims 1-4 , there exists the following effect.

即ち請求項１〜４の発明によれば、鋼製架台は、機器の重量が集中する軸受部の下方の空間部にコンクリートが充填されているので、同空間部の剛性が増大する。 That is, according to the first to fourth aspects of the present invention, since the steel mount is filled with concrete in the space below the bearing portion where the weight of the equipment is concentrated, the rigidity of the space is increased.

これにより、鋼製架台は苛酷な荷重条件下にある軸受部を支持する部位の変形が抑制されるとともに、上記剛性の増大によって固有振動数が上昇し、機器の軸回転数よりも常に上位に保持することが可能となって、荷重に応じて剛性のバランスがとれた鋼製架台が得られる。従って、本発明によれば、機器の軸回転数との同期による共振の発生を防止することができ、軸受の焼付きや回転軸の損傷の発生を防止することができる。   This suppresses the deformation of the part that supports the bearing part under severe load conditions in the steel mount, and the increase in the rigidity increases the natural frequency, which is always higher than the shaft rotation speed of the equipment. It becomes possible to hold, and a steel gantry with a balanced stiffness according to the load can be obtained. Therefore, according to the present invention, it is possible to prevent the occurrence of resonance due to synchronization with the shaft rotational speed of the device, and it is possible to prevent the occurrence of seizure of the bearing and damage to the rotating shaft.

また特に請求項３のように構成すれば、鋼製架台の軸受部におけるローリング荷重の支持部の剛性が増大し鋼製架台のローリング荷重に対する強度を増大することができる。 In particular, if configured as in claim 3 , the rigidity of the support portion of the rolling load in the bearing portion of the steel pedestal increases, and the strength of the steel pedestal against the rolling load can be increased.

さらに請求項４のように構成すれば、鋼製架台の、計器を支持する部位の剛性が増大し、計器の重量による架台の局部的な変形の発生を防止することができる。 Furthermore, if it comprises like Claim 4 , the rigidity of the site | part which supports a meter of a steel stand increases, and generation | occurrence | production of the local deformation | transformation of a stand by the weight of a meter can be prevented.

以下図面を参照して本発明の実施形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図３は本発明が適用される蒸気タービン発電機の１例を示す概略側面図である。   FIG. 3 is a schematic side view showing an example of a steam turbine generator to which the present invention is applied.

図３において、２は高圧タービン、３は中圧タービン、４は第１低圧タービン、５は第２低圧タービン、６は発電機、１０は復水器である。また６１は高圧タービン２の回転軸である高圧タービン軸、６２は３の回転軸である中圧タービン軸、６３ａ及び６３ｂは第１低圧タービン４及び第２低圧タービン５の回転軸である低圧タービン軸、６４は発電機６の回転軸である発電機軸であり、これらの各軸を串状に連結して、タンデム型タービン発電機を構成している。   In FIG. 3, 2 is a high-pressure turbine, 3 is a medium-pressure turbine, 4 is a first low-pressure turbine, 5 is a second low-pressure turbine, 6 is a generator, and 10 is a condenser. Reference numeral 61 denotes a high-pressure turbine shaft that is a rotating shaft of the high-pressure turbine 2, 62 denotes an intermediate-pressure turbine shaft that is a rotating shaft of 3, and 63 a and 63 b denote low-pressure turbines that are rotating shafts of the first low-pressure turbine 4 and the second low-pressure turbine 5. A shaft 64 is a generator shaft which is a rotating shaft of the generator 6, and these shafts are connected in a skewer shape to constitute a tandem turbine generator.

２１及び２２は上記高圧タービン軸６１を支持する No.１（＃１）軸受及び No.２（＃２）軸受、２３及び２４は上記中圧タービン軸６２を支持する No.３（＃３）軸受及び No.４（＃４）軸受、２５及び２６は上記低圧タービン軸６３ａを支持する No.５（＃５）軸受及び No.６（＃６）軸受、２７及び２８は上記低圧タービン軸６３ｂを支持する No.７（＃７）軸受及び No.８（＃８）軸受、２９ａ及び２９ｂは上記発電機軸６４を支持する No.９（＃９）軸受及び No.１０（＃１０）軸受である。   21 and 22 are No. 1 (# 1) bearings and No. 2 (# 2) bearings that support the high-pressure turbine shaft 61, and 23 and 24 are No. 3 (# 3) that support the intermediate-pressure turbine shaft 62. Bearings and No. 4 (# 4) bearings, 25 and 26 support the low pressure turbine shaft 63a, No. 5 (# 5) bearings and No. 6 (# 6) bearings, and 27 and 28 indicate the low pressure turbine shaft 63b. No. 7 (# 7) bearing and No. 8 (# 8) bearing, and 29a and 29b are No. 9 (# 9) bearing and No. 10 (# 10) bearing that support the generator shaft 64. is there.

上記タービン発電機の各軸受２１，２２，２３，２４，２５，２６，２７，２８，２９ａ，２９ｂは後述するようなアライメント方法によって、鋼製架台１上に取付けられている。   The bearings 21, 22, 23, 24, 25, 26, 27, 28, 29a and 29b of the turbine generator are mounted on the steel mount 1 by an alignment method as will be described later.

図７は上記タービン発電機を鋼製架台１上への取付状態を示す外観斜視図である。図７におけるタービン発電機の構成及び軸受の配置は図３と同様であり、図３と同一の部材は同一の符号にて示す。尚、１１１はタービン発電機用の計器である。 FIG. 7 is an external perspective view showing a state in which the turbine generator is mounted on the steel mount 1. The configuration of the turbine generator and the arrangement of the bearings in FIG. 7 are the same as those in FIG. 3, and the same members as those in FIG. 3 are denoted by the same reference numerals. Reference numeral 111 denotes a turbine generator instrument.

図１〜図２は本発明に係り本発明者が検討した第１検討例の蒸気タービンプラントの据付構造を示し、図１は図３のＡ−Ａ線矢視図、図２は図１のＺ部及びＹ部、つまりばね機構及び制振ダンパの構造図である。   1 to 2 show the installation structure of the steam turbine plant of the first examination example examined by the present inventor according to the present invention, FIG. 1 is a view taken along the line AA in FIG. 3, and FIG. FIG. 3 is a structural diagram of a Z part and a Y part, that is, a spring mechanism and a vibration damper.

図１において、第１低圧タービン４及び第２低圧タービン５は、上記のように、鋼製架台１上に固定されている。そして上記第１，第２低圧タービン４，５の下端には上記復水器１０が、図６に示すような伸縮継手７１を介することなく、直接固定されている。   In FIG. 1, the first low-pressure turbine 4 and the second low-pressure turbine 5 are fixed on the steel mount 1 as described above. The condenser 10 is directly fixed to the lower ends of the first and second low-pressure turbines 4 and 5 without using an expansion joint 71 as shown in FIG.

また、上記鋼製架台１は、並列に配置された複数のばね機構４０及び複数の制振ダンパ３０を介して基礎架台５０に弾性及び防振支持されている。さらに、上記復水器１０は、その下端と基礎架台５０との間に、複数のばね機構４０及び制振ダンパ３０を並列に配置して、これらばね機構４０及び制振ダンパ３０により弾性及び防振支持されている。   Further, the steel pedestal 1 is elastically and vibration-proof supported by the base pedestal 50 through a plurality of spring mechanisms 40 and a plurality of vibration dampers 30 arranged in parallel. Further, the condenser 10 has a plurality of spring mechanisms 40 and damping dampers 30 arranged in parallel between the lower end thereof and the foundation frame 50, and these spring mechanisms 40 and damping dampers 30 provide elasticity and prevention. It is supported by vibration.

上記ばね機構４０及び制振ダンパ３０の詳細を示す図２において、上記ばね機構４０は、上部ばね受４０ａ、下部ばね受４０ｂ、上部ばね受４０ａと下部ばね受４０ｂとの間に複数個並列に設けられたばね（圧縮ばね）４０ｇ、及び同ばね４０ｇの取付荷重を調整するための調整ボルト４０ｅからなる。そして、同ばね機構４０は上部ばね受４０ｂと鋼製架台１あるいは復水器１０との間に粘着ばね受シート４０ｃを介装するとともに、下部ばね受４０ａと基礎架台５０との間に粘着シート４０ｄを介装して、上記鋼製架台１あるいは復水器１０と基礎架台５０との間に挿入されている。   In FIG. 2 showing the details of the spring mechanism 40 and the damping damper 30, a plurality of the spring mechanisms 40 are arranged in parallel between the upper spring receiver 40a, the lower spring receiver 40b, and the upper spring receiver 40a and the lower spring receiver 40b. A spring (compression spring) 40g provided, and an adjustment bolt 40e for adjusting the mounting load of the spring 40g. The spring mechanism 40 has an adhesive spring receiving sheet 40c interposed between the upper spring receiver 40b and the steel mount 1 or the condenser 10, and an adhesive sheet between the lower spring receiver 40a and the basic mount 50. The steel frame 1 or the condenser 10 and the foundation frame 50 are inserted via 40d.

一方、上記制振ダンパ３０は、上部ケース３０ａと下部ケース３０ｂとの間に形成される密閉空間内にシリコン油等の粘性流体３０ｃを封入してなる。そして、上記上部ケース３０ａは上記鋼製架台１あるいは復水器１０の下面に溶接され（ボルト締めでも可）、下部ケース３０ｂは複数のボルト３０ｅにより上記基礎架台５０に固定されている。   On the other hand, the damping damper 30 is formed by sealing a viscous fluid 30c such as silicon oil in a sealed space formed between the upper case 30a and the lower case 30b. The upper case 30a is welded to the lower surface of the steel pedestal 1 or the condenser 10 (it may be bolted), and the lower case 30b is fixed to the basic pedestal 50 by a plurality of bolts 30e.

上記のように構成されたタービン発電機の据付構造において、タービン発電機の運転中、鋼製架台１には、タービン発電機を構成する各機器の重量のみが下向きに作用し、真空荷重を受けることはない。   In the turbine generator installation structure configured as described above, during operation of the turbine generator, only the weight of each device constituting the turbine generator acts downward on the steel mount 1 and receives a vacuum load. There is nothing.

これによって、従来のもののような鋼製架台１に上記真空荷重による過大な荷重が作用するのを防止できる。   Thereby, it is possible to prevent an excessive load due to the vacuum load from acting on the steel pedestal 1 like the conventional one.

上記のようにタービン発電機の運転中、復水器１０の熱膨張によって、復水器１０及びこれが固定された第１低圧タービン４及び第２低圧タービン５に上下方向の変位が生ずるが、鋼製架台１及び復水器１０をばね機構４０及び制振ダンパ３０を介して基礎架台５０に支持しているので、上記ばね機構４０及び制振ダンパ３０からなる弾性、防振支持機構によって上記のような上下方向の変位は吸収され、この上下方向変位により、鋼製架台１に過大荷重が掛かることは無い。   During the operation of the turbine generator as described above, the condenser 10 and the first low-pressure turbine 4 and the second low-pressure turbine 5 to which the condenser 10 is fixed cause vertical displacement due to the thermal expansion of the condenser 10. Since the cradle 1 and the condenser 10 are supported by the base gantry 50 via the spring mechanism 40 and the vibration damper 30, the elastic and vibration-damping support mechanism including the spring mechanism 40 and the vibration damper 30 described above is used. Such vertical displacement is absorbed, and this vertical displacement does not apply an excessive load to the steel mount 1.

次に上記第１検討例に係るタービン発電機の軸受のアライメント方法について説明する。上記復水器１０は、上記のように、その熱膨張により上方に変位する。また上記鋼製架台１は鋼材を溶接してなるため、同架台１自体が温度上昇によって熱変形を起こすとともに、上記のように真空荷重Ｆ等の力による変形も生ずる。従って、上記鋼製架台１は上記復水器１０の熱膨張による変形及び同架台１自体の変形によって、全体として上方に変位することとなる。   Next, the turbine generator bearing alignment method according to the first study example will be described. As described above, the condenser 10 is displaced upward due to its thermal expansion. Further, since the steel pedestal 1 is formed by welding steel materials, the cradle 1 itself undergoes thermal deformation due to a temperature rise, and also deforms due to a force such as a vacuum load F as described above. Therefore, the steel pedestal 1 is displaced upward as a whole by deformation due to thermal expansion of the condenser 10 and deformation of the gantry 1 itself.

図４は上記鋼製架台１の軸方向における上記変位の状況を示す。図４においてＡは変位０（ゼロ）の基準となるアライメント、Ｂは運転中における架台１の実際の変位量、＃１〜＃１０は No.１軸受２１〜 No.１０軸受２９ｂの位置を夫々示す。   FIG. 4 shows the state of the displacement in the axial direction of the steel mount 1. 4, A is an alignment serving as a reference for displacement 0 (zero), B is an actual displacement amount of the gantry 1 during operation, and # 1 to # 10 are positions of No. 1 bearing 21 to No. 10 bearing 29b, respectively. Show.

図４に明らかなように、上記鋼製架台１は、運転中全体として上方に変位し、その変位量は、復水器１０の熱膨張の影響を受ける第１，第２低圧タービン４，５（ＬＰ１，ＬＰ２）近傍が最も大きくなる。   As apparent from FIG. 4, the steel mount 1 is displaced upward as a whole during operation, and the amount of displacement is affected by the thermal expansion of the condenser 10, the first and second low-pressure turbines 4, 5. The vicinity of (LP1, LP2) is the largest.

このため本検討例においては、タービン発電機の冷態時、つまり据付時における各軸受２１〜２９ｂのアライメントつまり、軸受の上下方向位置を図４のＡ線に示す基準アライメントから、Ｂ線に示す変位量Ｓだけ低い位置に設定し、これにより、各軸受２１〜２９ｂのアライメントは図４のＢ線に対称なＣ線となる。   For this reason, in the present study example, the alignment of the bearings 21 to 29b when the turbine generator is in a cold state, that is, during installation, that is, the vertical position of the bearing is indicated by the B line from the reference alignment shown by the A line in FIG. The position is set to a position lower by the displacement amount S, whereby the alignment of the bearings 21 to 29b is a C line symmetrical to the B line in FIG.

上記検討例によれば、タービン発電機の各軸受のアライメントを鋼製架台１の運転中における変位量に相当する量だけ、基準アライメントＡに対して低い位置に設定しているので、タービン発電機の運転中には、図４のＢ線に示すような鋼製架台１の上方への変位によって各軸受２１〜２９ｂのアライメントは上記基準アライメントＡの位置となる。   According to the above examination example, the alignment of each bearing of the turbine generator is set at a position lower than the reference alignment A by an amount corresponding to the displacement amount during operation of the steel gantry 1. During the operation, the alignment of the bearings 21 to 29b becomes the position of the reference alignment A due to the upward displacement of the steel gantry 1 as shown by line B in FIG.

これにより、タービン発電機の各軸受２１〜２９ｂの軸受荷重は上記基準アライメントＡ線にて設定された正規の軸受荷重に維持され、特定の軸受の軸受荷重が過大化してその軸受の摩耗や焼付きを誘発するのが回避される。   As a result, the bearing load of each of the bearings 21 to 29b of the turbine generator is maintained at a normal bearing load set by the reference alignment A line, and the bearing load of a specific bearing becomes excessive and wear or burnt of the bearing. Inducing sticking is avoided.

次に図５〜図６は本発明に係り本発明者が検討した第２検討例の蒸気タービンプラントの配管構造を示し、図５はその平面図、図６は図５のＡ矢視図である。また図７は上記配管構造が用いられる蒸気タービンプラントの外観斜視図である。   Next, FIG. 5 to FIG. 6 show the piping structure of the steam turbine plant of the second examination example examined by the inventor according to the present invention, FIG. 5 is a plan view thereof, and FIG. is there. FIG. 7 is an external perspective view of a steam turbine plant in which the piping structure is used.

図７において、１は鋼材を溶接してなる鋼製架台、２は高圧タービン、３は中圧タービン、４は第１低圧タービン、５は第２低圧タービン、６は発電機、１０は復水器、１１１は計器である。   In FIG. 7, 1 is a steel mount made by welding steel materials, 2 is a high-pressure turbine, 3 is a medium-pressure turbine, 4 is a first low-pressure turbine, 5 is a second low-pressure turbine, 6 is a generator, and 10 is condensate. Instrument 111 is an instrument.

また２１１は高圧タービン２の前側の軸受部、７は中圧タービン３と第１低圧タービン４との間の軸受部、８は第１低圧タービン４と第２低圧タービン５との間の軸受部、９は第２低圧タービン５と発電機６との間の軸受部である。上記のような蒸気タービンプラントの各機器が固定された鋼製架台１は、複数のばね機構及び制振ダンパ（何れも図示省略）を介して基礎架台（図示省略）に取付けられている。以上の基本とする構成は従来のものと同様である。   Reference numeral 211 denotes a bearing portion on the front side of the high-pressure turbine 2, 7 denotes a bearing portion between the intermediate-pressure turbine 3 and the first low-pressure turbine 4, and 8 denotes a bearing portion between the first low-pressure turbine 4 and the second low-pressure turbine 5. , 9 is a bearing portion between the second low-pressure turbine 5 and the generator 6. The steel gantry 1 to which each device of the steam turbine plant as described above is fixed is attached to a base gantry (not shown) via a plurality of spring mechanisms and damping dampers (all not shown). The basic configuration described above is the same as the conventional one.

この検討例おいては図７に示す蒸気タービンプラントの配管構造を改良している。
即ち、図５〜図６において、１は鋼製架台で、同鋼製架台１上には図７と同様に、高圧タービン２、中圧タービン３、第１低圧タービン４、第２低圧タービン５及び発電機６が串状に連結されて固定されている。１７は油タンクで、基礎架台５３上に固定されている。 In this examination example, the piping structure of the steam turbine plant shown in FIG. 7 is improved.
That is, in FIGS. 5 to 6, reference numeral 1 denotes a steel mount, and the high pressure turbine 2, the intermediate pressure turbine 3, the first low pressure turbine 4, and the second low pressure turbine 5 are placed on the steel mount 1 as in FIG. 7. And the generator 6 is connected and fixed in the shape of a skewer. Reference numeral 17 denotes an oil tank that is fixed on the foundation frame 53.

１１及び１２は、上記鋼製架台１の左側部及び右側部に夫々取付けられた左列排油管及び右列排油管である。上記左列排油管１１及び右列排油管１２には、上記高圧タービン２、中圧タービン３、第１低圧タービン４、第２低圧タービン５、及び発電機６の各軸受部２１，７，８，９等の潤滑部から排出された潤滑油が左列及び右列の各枝管１４及び１５を通って流入するようになっている。   Reference numerals 11 and 12 denote a left row oil drain pipe and a right row oil drain pipe respectively attached to the left side and right side of the steel gantry 1. The left row drain pipe 11 and the right row drain pipe 12 include bearings 21, 7, 8 of the high pressure turbine 2, intermediate pressure turbine 3, first low pressure turbine 4, second low pressure turbine 5, and generator 6. , 9 etc., the lubricating oil discharged from the lubricating portions flows through the branch pipes 14 and 15 in the left and right rows.

上記右列排油管１２は、連通管１３を介して左列排油管１１と連通され、同連通管１３による合流部の下流には集合管１６が設けられ、同集合管１６の出口は上記油タンク１７に接続されている。   The right row oil drain pipe 12 communicates with the left row oil drain pipe 11 via a communication pipe 13, and a collecting pipe 16 is provided downstream of the joining portion by the communication pipe 13. It is connected to the tank 17.

そして、上記左列排油管１１と右列排油管１２とは、図２に示すように、これらの中心線３１，３２が蒸気タービンプラントの回転軸心３０１に対して同一距離Ｓ（ほぼ同一距離であればよい）になるように、また、好ましくは管径や管長も左、右方向（上記回転軸心３０１に直角な水平方向）に対称に設置されている。また上記左側の枝管１４及び右側の枝管１５についても、その数、管長、管径ともに上記回転軸心３０１に対して対称に設けられている。   As shown in FIG. 2, the left row oil drain pipe 11 and the right row oil drain pipe 12 have their center lines 31 and 32 having the same distance S (substantially the same distance) with respect to the rotation axis 301 of the steam turbine plant. In addition, the pipe diameter and the pipe length are preferably set symmetrically in the left and right directions (horizontal direction perpendicular to the rotation axis 301). The left branch pipe 14 and the right branch pipe 15 are also provided symmetrically with respect to the rotational axis 301 in terms of the number, pipe length, and pipe diameter.

上記のように構成された蒸気タービンプラントにおいて、上記各タービンの軸受部２１，７，８，９（図３参照）等の潤滑部を潤滑して昇温された潤滑油（排油）は、左右の各枝管１４，１５を通って左列排油管１１及び右列排油管１２に流入する。そして右列排油管１２を流れた潤滑油は連通管１３を通り、その下流部で左列排油管１１からの潤滑油と合流し、集合管１６を経て油タンク１７に戻される。   In the steam turbine plant configured as described above, the lubricating oil (waste oil) heated by lubricating the lubricating parts such as the bearing parts 21, 7, 8, 9 (see FIG. 3) of each turbine is The oil flows into the left row drain pipe 11 and the right row drain pipe 12 through the left and right branch pipes 14 and 15. The lubricating oil that has flowed through the right row drain pipe 12 passes through the communication pipe 13, merges with the lubricating oil from the left row drain pipe 11 at a downstream portion thereof, and returns to the oil tank 17 through the collecting pipe 16.

上記排油時において、蒸気タービンプラント各部を潤滑した後の潤滑油即ち排油の温度が上昇するため、左列及び右列排油管１１及び１２、並びに左側及び右側の枝管１４及び１５の温度が上昇し、これらの配管が取付けられている鋼製架台１の温度も上昇する。   Since the temperature of the lubricating oil, that is, the drained oil after lubricating each part of the steam turbine plant rises at the time of the draining, the temperatures of the left and right row drain pipes 11 and 12 and the left and right branch pipes 14 and 15 are increased. Rises, and the temperature of the steel gantry 1 to which these pipes are attached also rises.

然るに本検討例においては、上記のように鋼製架台１の回転軸心３０１に対称に、左列排油管１１及び右列排油管１２を設けるとともに、左側の枝管１４及び右側の枝管１５を設けているので、これらの配管が取付けられている鋼製架台１の温度も、上記回転軸心３０に対して左側と右側とで略同一温度となる。   However, in the present study example, the left row drain pipe 11 and the right row drain pipe 12 are provided symmetrically to the rotation axis 301 of the steel mount 1 as described above, and the left branch pipe 14 and the right branch pipe 15 are provided. Therefore, the temperature of the steel gantry 1 to which these pipes are attached is also substantially the same on the left side and the right side with respect to the rotation axis 30.

これによって上記鋼製架台１の上記排油管系の温度上昇による熱変形も回転軸心３０に対して左、右で略同一となり、従来のもののような非対称な熱変形による軸アライメントの変動や軸振動の増大等の不具合の発生が回避される。   As a result, the thermal deformation caused by the temperature rise of the oil drain pipe system of the steel pedestal 1 is substantially the same on the left and right with respect to the rotation axis 30. The occurrence of problems such as increased vibration is avoided.

尚、この検討例では、排油管系を、鋼製架台１の上記回転軸心３０１に対して対称に設けたが、これに加えて蒸気管や鋼製架台１の加熱源となる他の配管類も上記回転軸心３０１に対して対称に設けることができる。   In this examination example, the oil drain pipe system is provided symmetrically with respect to the rotation axis 301 of the steel gantry 1, but in addition to this, the steam pipe and other piping serving as a heating source of the steel gantry 1 are provided. The kind can also be provided symmetrically with respect to the rotation axis 301.

さらに、本検討例はここに示すようなタンデム型低圧４フロー再熱タービンに限らず、蒸気タービンを鋼製架台に支持するようにしたあらゆる蒸気タービンプラントに適用できる。   Furthermore, this study example is not limited to the tandem low-pressure four-flow reheat turbine as shown here, but can be applied to any steam turbine plant in which the steam turbine is supported on a steel mount.

次に図８〜図１３は本発明に係り本発明者が検討した第３検討例の蒸気タービンプラントの据付構造及び輸送手段を示し、図８は蒸気タービンプラントの据付状態を示す要部側面図、図９は上記据付状態を示す外観斜視構成図、図１０は鋼製架台の連結部を示す拡大側面図、図１１は図１０のＡ−Ａ矢視図、図１２はモジュール体の船舶での輸送時を示す概略斜視図、図１３は上記輸送時におけるモジュール体の固定手段を示す側面図である。   Next, FIGS. 8 to 13 show the installation structure and transportation means of the steam turbine plant of the third examination example examined by the present inventor according to the present invention, and FIG. 8 is a side view of the main part showing the installation state of the steam turbine plant. 9 is an external perspective configuration diagram showing the installation state, FIG. 10 is an enlarged side view showing a connecting portion of a steel mount, FIG. 11 is an AA arrow view of FIG. 10, and FIG. FIG. 13 is a side view showing the fixing means for the module body during the transportation.

図８〜図９において、２は高圧タービン、３は中圧タービン、４は第１低圧タービン、５は第２低圧タービン、６は発電機、１０は復水器である。また６１は高圧タービン２の回転軸である高圧タービン軸、６２は中圧タービン３の回転軸である中圧タービン軸、６３ａ及び６３ｂは第１低圧タービン４及び第２低圧タービン５の回転軸である低圧タービン軸、６４は発電機６の回転軸である発電機軸であり、これらの各軸を串状に連結して、タンデム型蒸気タービン発電機を構成している。   8 to 9, 2 is a high-pressure turbine, 3 is an intermediate-pressure turbine, 4 is a first low-pressure turbine, 5 is a second low-pressure turbine, 6 is a generator, and 10 is a condenser. Reference numeral 61 denotes a high-pressure turbine shaft that is a rotating shaft of the high-pressure turbine 2, 62 denotes an intermediate-pressure turbine shaft that is a rotating shaft of the intermediate-pressure turbine 3, and 63 a and 63 b denote rotating shafts of the first low-pressure turbine 4 and the second low-pressure turbine 5. A certain low-pressure turbine shaft 64 is a generator shaft that is a rotating shaft of the generator 6, and these shafts are connected in a skewer shape to constitute a tandem steam turbine generator.

２１及び２２は上記高圧タービン軸６１を支持する No.１（＃１）軸受及び No.２（＃２）軸受、２３及び２４は上記中圧タービン軸６２を支持する No.３（＃３）軸受及び No.４（＃４）軸受、２５及び２６は上記低圧タービン軸６３ａを支持する No.５（＃５）軸受及び No.６（＃６）軸受、２７及び２８は上記低圧タービン軸６３ｂを支持する No.７（＃７）軸受及び No.８（＃８）軸受、２９ａ及び２９ｂは上記発電機軸６４を支持する No.９（＃９）軸受及び No.１０（＃１０）軸受である。   21 and 22 are No. 1 (# 1) bearings and No. 2 (# 2) bearings that support the high-pressure turbine shaft 61, and 23 and 24 are No. 3 (# 3) that support the intermediate-pressure turbine shaft 62. Bearings and No. 4 (# 4) bearings, 25 and 26 support the low pressure turbine shaft 63a, No. 5 (# 5) bearings and No. 6 (# 6) bearings, and 27 and 28 indicate the low pressure turbine shaft 63b. No. 7 (# 7) bearing and No. 8 (# 8) bearing, and 29a and 29b are No. 9 (# 9) bearing and No. 10 (# 10) bearing that support the generator shaft 64. is there.

また、図９において、２１１は上記高圧タービン２の前部の軸受部、７は中圧タービン３と第１低圧タービン４との間の軸受部、８は第１低圧タービン４と第２低圧タービン５との間の軸受部、９は第２低圧タービン５と発電機６との間の軸受部、４５は発電機６の後部の軸受部である。   In FIG. 9, 211 is a bearing portion at the front of the high pressure turbine 2, 7 is a bearing portion between the intermediate pressure turbine 3 and the first low pressure turbine 4, and 8 is a first low pressure turbine 4 and a second low pressure turbine. Reference numeral 5 denotes a bearing portion, reference numeral 9 denotes a bearing portion between the second low-pressure turbine 5 and the generator 6, and reference numeral 45 denotes a rear bearing portion of the generator 6.

１は鋼製架台であり、軸方向において、前部架台１０１、中央架台１０２及び後部架台１０３に３分割され、これらを後述するように、ボルト３４によって連結して構成される。そして上記鋼製架台１を構成する前部架台１０１には、高圧タービン２及び中圧タービン３が No.１軸受２１、 No.２軸受２２、No.３軸受２３及び No.４軸受２４を介して固定され、中央架台１０２には第１，第２低圧タービン４，５が No.５軸受２５、 No.６軸受２６、No.７軸受２７及び No.８軸受２８を介して固定され、さらに後部架台１０３には、発電機６が、 No.９軸受、及び No.１０軸受を介して固定されている。   Reference numeral 1 denotes a steel gantry, which is divided into three parts in the axial direction: a front gantry 101, a central gantry 102, and a rear gantry 103, which are connected by bolts 34 as will be described later. A high pressure turbine 2 and a medium pressure turbine 3 are passed through a No. 1 bearing 21, a No. 2 bearing 22, a No. 3 bearing 23 and a No. 4 bearing 24 on the front frame 101 constituting the steel frame 1. The first and second low-pressure turbines 4 and 5 are fixed to the central frame 102 via No. 5 bearing 25, No. 6 bearing 26, No. 7 bearing 27 and No. 8 bearing 28, and The generator 6 is fixed to the rear frame 103 via No. 9 bearings and No. 10 bearings.

そして、上記前部架台１０１には高圧タービン２、中圧タービン３及びこれらに付属する全ての部材、並びに配管及び配線が、中央架台１０２には第１，第２低圧タービン４，５及びこれらに付属する全ての部材、並びに配管及び配線が、さらに後部架台１０３には発電機６及びこれに付属する全ての部材並びに配管及び配線が、これら各架台１０１，１０２，１０３を切り離して運搬可能なように取付けられている。１０４は前部架台１０１と中央架台１０２との結合部、１０５は中央架台１０２と後部架台１０３との結合部である。 The front frame 101 includes the high-pressure turbine 2, the intermediate-pressure turbine 3, and all the members attached thereto, as well as piping and wiring. The central frame 102 includes the first and second low-pressure turbines 4, 5 and these. All the attached members, piping and wiring, and further, the rear frame 103 can be transported with the generator 6 and all the members, piping and wiring attached thereto separated from these frames 101, 102, 103. Installed on. Reference numeral 104 denotes a coupling portion between the front frame 101 and the central frame 102, and reference numeral 105 denotes a coupling portion between the central frame 102 and the rear frame 103.

尚、上記鋼製架台１の分割態様は、この検討例の態様に限らず、２分割でも、４分割以上でもよく、また分割された各架台には上記検討例の態様に限らず、所要数の機器を固定できる。   In addition, the division | segmentation aspect of the said steel mount 1 is not restricted to the aspect of this examination example, 2 division | segmentation or 4 divisions or more may be sufficient, and each division | segmentation base is not restricted to the aspect of the said examination example, A required number Can be fixed.

上記のようにして３つの架台１０１，１０２，１０３が結合された鋼製架台１は複数のばね機構４０及び制振ダンパ３０を介して基礎架台５０に据付けられる。 The steel frame 1 in which the three frames 101, 102, 103 are coupled as described above is installed on the foundation frame 50 via the plurality of spring mechanisms 40 and the vibration damper 30.

上記ばね機構４０は、図１３あるいは図８に示すように、上部ばね受４０ａ（図２参照）、下部ばね受４０ｂ（図２参照）、上部ばね受４０ａと下部ばね受４０ｂとの間に複数個並列に設けられたばね（圧縮ばね）４０ｇ、及び同ばね４０ｇの取付荷重を調整するための調整ボルト４０ｅ（図２参照）からなる。そして、同ばね機構４０は上部ばね受４０ａと鋼製架台１との間に粘着ばね受シート４０ｃを介装するとともに、下部ばね受４０ｂと基礎架台５０との間に粘着シート４０ｄを介装して、上記鋼製架台１と基礎架台５０との間に挿入されている。 As shown in FIG. 13 or FIG. 8, the spring mechanism 40 includes an upper spring receiver 40a (see FIG. 2) , a lower spring receiver 40b (see FIG. 2) , and a plurality of spring mechanisms 40 between the upper spring receiver 40a and the lower spring receiver 40b. A spring (compression spring) 40g provided in parallel with each other and an adjustment bolt 40e (see FIG. 2) for adjusting the mounting load of the spring 40g. Then, through with the spring mechanism 40 is interposed an adhesive spring receiver sheet 40c between the upper spring receiver 40 a and the steel frame 1, an adhesive sheet 40d between the lower spring receiver 40 b and the base pedestal 50 And inserted between the steel frame 1 and the foundation frame 50 .

一方、上記制振ダンパ３０は、図１３あるいは図８に示すように、上部ケース３０ａと下部ケース３０ｂとの間に形成される密閉空間内にシリコン油等の粘性流体３０ｃ（図２参照）を封入してなる。そして、上記上部ケース３０ａは上記鋼製架台１の下面に溶接され（ボルト締めでも可）、下部ケース３０ｂは複数のボルト３０ｅ（図２参照）により上記基礎架台５０に固定されている。 On the other hand, as shown in FIG. 13 or FIG. 8, the damping damper 30 applies a viscous fluid 30c (see FIG. 2) such as silicone oil in a sealed space formed between the upper case 30a and the lower case 30b . Enclosed. The upper case 30a is welded to the lower surface of the steel mount 1 (bolt tightening is also possible), and the lower case 30b is fixed to the base mount 50 with a plurality of bolts 30e (see FIG. 2) .

上記鋼製架台１における分割された各架台の結合態様の詳細を図１０〜図１１に示す。図１０〜図１１は前部架台１０１と中央架台１０２との結合部１０４を示しているが、中央架台１０２と後部架台１０３との結合部１０５もこれと同様な構成である。   The detail of the coupling | bonding aspect of each divided | segmented mount in the said steel mounts 1 is shown in FIGS. 10 to 11 show the connecting portion 104 between the front frame 101 and the central frame 102, the connecting portion 105 between the central frame 102 and the rear frame 103 has the same configuration.

図１０〜図１１において、３２，３３は前部架台１０１及び中央架台１０２の連結板でその連結面は平滑に仕上げられている。３１は上記中圧タービン軸６２と第１低圧タービン軸６３ａとを連結するカップリングである。上記連結板３２，３３には、図１１に示すように、それらの周に沿って複数の結合用ボルト３４がほぼ等間隔で配設され、上記連結板３２，３３を締め付けている。３５は位置決め用のピンで、上記ボルト３４のピッチ線上に２個以上設けられて、前部架台１０１と中央架台１０２との上下面を同一面になるように合わせている。 10 to 11, reference numerals 32 and 33 denote connection plates for the front frame 101 and the center frame 102, and the connection surfaces thereof are finished smoothly. Reference numeral 31 denotes a coupling that connects the intermediate-pressure turbine shaft 62 and the first low-pressure turbine shaft 63a. As shown in FIG. 11 , a plurality of coupling bolts 34 are arranged on the connecting plates 32 and 33 along the circumference thereof at substantially equal intervals, and the connecting plates 32 and 33 are fastened. Two or more positioning pins 35 are provided on the pitch line of the bolt 34 so that the upper and lower surfaces of the front frame 101 and the central frame 102 are aligned with each other.

上記のように構成された蒸気タービンプラントの製作工場での組立て、据付場所への輸送、及び据付場所における据付方法について説明する。   The assembly at the manufacturing plant of the steam turbine plant configured as described above, transportation to the installation site, and the installation method at the installation site will be described.

先ず製作工場においては、前部架台１０１、中央架台１０２、及び後部架台１０３を別個に製作し、治具等によりその上面及び下面が同一平面になるように合わせ、ピン３５にて位置決めしておく。次いで前部架台１０１には高圧タービン２、中圧タービン３及び配管、配線を含むこれの付属部材を取付けあるいは固定し、中央架台１０２には第１，第２低圧タービン４，５及び配管、配線を含む付属部材を取付け、あるいは固定し、さらに後部架台１０３には発電機６及び配管、配線を含む付属部材を固定あるいは取付ける。   First, in the manufacturing factory, the front frame 101, the central frame 102, and the rear frame 103 are separately manufactured, and the upper surface and the lower surface thereof are aligned with a jig or the like and positioned with the pins 35. . Next, the front frame 101 is attached or fixed to the high pressure turbine 2, the intermediate pressure turbine 3, and the pipes and wiring attachments, and the central frame 102 is attached to the first and second low pressure turbines 4, 5 and the piping and wiring. Attached members including are attached or fixed, and further, attached members including the generator 6 and piping and wiring are fixed or attached to the rear frame 103.

そして、図１２に示されるような、上記前部架台１０１、中央架台１０２及び後部架台１０３に上記のようにして各機器を配管、配線とともに取付けあるいは固定してなるモジュール体５０１を、図１０に示すように、ボルト３４及びピン３５によって結合して、工場内の運転設備に取付け、所定の試運転を行なう。   Then, as shown in FIG. 12, a module body 501 in which each device is attached or fixed to the front frame 101, the central frame 102 and the rear frame 103 together with piping and wiring as described above is shown in FIG. As shown, they are connected by bolts 34 and pins 35 and attached to operating equipment in the factory to perform a predetermined test run.

上記試運転後、ボルト３４を取外して各架台１０１，１０２，１０３単位のモジュール体５０１に分割し、各モジュール体５０１毎に船舶（輸送機関）に搭載する。 After the trial operation, the bolt 34 is removed and divided into the module bodies 501 of the respective bases 101, 102, and 103, and each module body 501 is mounted on a ship (transportation engine).

図１２は上記モジュール体５０１を船舶の船体５１に仮固定して据付場所まで輸送する際の斜視図である。図５において、モジュール体５０１を構成する前部架台１０１上に、高圧タービン２及び中圧タービン３、並びに配管、配線を含む付属品を固定してなるモジュール体５０１は、船体５１のフレーム５３上にスペーサ５２を介して次の手法によって仮固定される。 FIG. 12 is a perspective view when the module body 501 is temporarily fixed to the hull 51 of the ship and transported to the installation place. In FIG. 5, a module body 501 in which accessories including a high pressure turbine 2 and an intermediate pressure turbine 3 and piping and wiring are fixed on a front frame 101 constituting the module body 501 is provided on a frame 53 of a hull 51. Are temporarily fixed by spacers 52 by the following method.

即ち、上記モジュール体５０１を船舶の船体５１に仮固定する際には、図１３に示すように、モジュール体５０１を構成する鋼製架台１（つまり図１２の場合は前部架台１０１）の下面と船体のフレーム５３との間に少なくとも４個の固定用スペーサ５２を挿入し、ボルト５２ａで鋼製架台１及びフレーム５３に締め付ける。ばね機構４０については、図１３に示すように、同ばね機構４０に粘着シート４０ｃ，４０ｄを挿入した状態で仮固定用ボルト４０ｈを、フレーム５３からばね機構４０及び鋼製架台１まで挿通して３者を一体に締め付ける。 That is, when the module body 501 is temporarily fixed to the hull 51 of the ship, as shown in FIG. 13, the lower surface of the steel gantry 1 constituting the module body 501 (that is, the front gantry 101 in the case of FIG. 12). And at least four fixing spacers 52 are inserted between the frame 53 and the hull frame 53 and fastened to the steel frame 1 and the frame 53 with bolts 52a. With respect to the spring mechanism 40, as shown in FIG. 13 , the temporary fixing bolt 40h is inserted from the frame 53 to the spring mechanism 40 and the steel mount 1 with the adhesive sheets 40c and 40d inserted into the spring mechanism 40. Tighten all three together.

この際において、上記固定用ボルト４０ｈは専用ボルトを用いて、あるいは、ばね機構４０のばね４０ｇのばね荷重を調節する複数のボルトのうち、適当な数本をフレーム５３、ばね機構４０及びモジュール体５０１の鋼製架台１に挿通可能なように長尺にして用いても良い。   At this time, the fixing bolt 40h is an exclusive bolt, or among the plurality of bolts for adjusting the spring load of the spring 40g of the spring mechanism 40, an appropriate number of bolts are used for the frame 53, the spring mechanism 40 and the module body. You may use it elongate so that it can penetrate the steel mount 1 of 501.

また制振ダンパ３０については、空間３０ｆ内の粘性流体３０ｃを抜き出した状態で取付ける。この場合、上記のように同制振ダンパ３０の上部ケース３０ａは鋼製架台１に溶接等によって固定されているので下部ケース３０ｂの下面はフレーム５３上に載せるのみでよい。   The damping damper 30 is attached in a state where the viscous fluid 30c in the space 30f is extracted. In this case, since the upper case 30a of the vibration damper 30 is fixed to the steel mount 1 by welding or the like as described above, the lower surface of the lower case 30b only needs to be placed on the frame 53.

以上のような仮固定状態にて、上記モジュール体５０１は据付場所まで輸送される。かかる輸送時において、海面の波浪等により船体５１が揺動しても、モジュール体５０１は上記のようにして船体のフレーム５３に堅固に固定されているので、支障無く輸送できる。   In the temporarily fixed state as described above, the module body 501 is transported to the installation location. During such transportation, even if the hull 51 swings due to sea waves or the like, the module body 501 is firmly fixed to the frame 53 of the hull as described above, so that it can be transported without any trouble.

次に据付場所（発電所）に上記タービン発電機を据付けるにあたっては、図１２〜図１３に示す船舶の船体５１への仮固定状態から固定用のスペーサ５２を取り外すとともに、ばね機構４０を仮固定しているボルト４０ｈを抜き出し、鋼製架台（前部架台１０１等）上に上記機器を取付けてなる上記各モジュール体５０１を基礎架台５０上に置く。 When installing the turbine generator to the next installation site (plant), in conjunction with removing the spacer 52 for fixing the temporarily fixed state to the ship hull 51 shown in FIGS. 12 13, the spring mechanism 40 tentative The fixed bolts 40 h are extracted, and the module bodies 501 each having the above-described devices attached on a steel frame (front frame 101 or the like) are placed on the basic frame 50 .

そして、図８に示すように、各モジュール体５０１の前部架台１０１と中央架台１０２との結合部１０４、中央架台１０２と後部架台１０３との結合部１０５を図１０及び図１１に示すようにボルト３４及びピン３５を介して連結する。そして、上記のように連結された鋼製架台１の下面と基礎架台５０との間に上記ばね機構４０及び制振ダンパ３０を挿入する。 As shown in FIG. 8, as shown in FIGS. 10 and 11, the connecting portion 104 of the front frame 101 and the central frame 102 of each module body 501 and the connecting portion 105 of the central frame 102 and the rear frame 103 are shown. They are connected via bolts 34 and pins 35. And the said spring mechanism 40 and the damping damper 30 are inserted between the lower surface of the steel mount 1 connected as mentioned above, and the foundation mount 50. FIG.

上記ばね機構４０は、ばね荷重調整用のボルト４０ｅの長さを調節することによりばね４０ｇの取付荷重を設定し、上部ばね受４０ａと鋼製架台１との間に粘着シート４０ｃを挿み込むとともに、下部ばね受４０ｂと基礎架台５０との間に粘着シート４０ｄを挿み込むことによって、上記鋼製架台１と基礎架台５０との間に所要の取付荷重で以って介装される。 The spring mechanism 40 sets the attachment load of the spring 40g by adjusting the length of the bolt 40e for adjusting the spring load, and inserts the adhesive sheet 40c between the upper spring receiver 40a and the steel mount 1. At the same time, the adhesive sheet 40d is inserted between the lower spring holder 40b and the foundation pedestal 50 , so that the steel pedestal 1 and the foundation pedestal 50 are interposed with a required mounting load.

また上記制振ダンパ３０は、所定の制振性能が得られるようにその量を設定して粘性流体３０ｃを封入し、上記鋼製架台１と基礎架台５０との間に介装する。 The damping damper 30 is set so as to obtain a predetermined damping performance, encloses the viscous fluid 30c, and is interposed between the steel gantry 1 and the foundation gantry 50 .

以上のように、この検討例においては、製作工場内で、蒸気タービンプラントを構成する機器を分割された鋼製架台１０１，１０２，１０３の夫々に分けて取付けてモジュール体５０１とし、このモジュール体５０１のまま船舶等の輸送機関のフレーム５３上に仮固定して据付場所まで輸送する。 As described above, in this study example, in the manufacturing plant, the equipment constituting the steam turbine plant is divided and attached to each of the divided steel bases 101, 102, and 103 to form a module body 501, and this module body. The 501 is temporarily fixed on a frame 53 of a transportation facility such as a ship and transported to an installation location.

そして据付場所においては、鋼製架台即ち前部架台１０１、中央架台１０２、後部架台１０３及びこれらの架台に取付けられた機器類からなる上記各モジュール体５０１を連結してばね機構４０及び制振ダンパを介して基礎架台５０上に据付けるようにしたので、製作工場内で試運転を行った蒸気タービンプラントの構成機器を取外すことなく、鋼製架台１０１〜１０３と一本化したモジュール体５０１として輸送し、据付場所に据付ることができ、製作工場における、輸送のため蒸気タービンプラント機器類の取外し作業が不要となって、製作工場から据付場所までの輸送に要する工数が低減されるとともに、据付時における蒸気タービンプラントの鋼製架台１への再取付け及びアライメント調整が省略され、据付工数が低減される。 At the installation location, the steel frame, that is, the front frame 101, the central frame 102, the rear frame 103, and the modules 501 composed of the devices attached to these frames are connected to each other to connect the spring mechanism 40 and the vibration damper. Since it is installed on the foundation gantry 50 via the slab, it is transported as a module body 501 integrated with the steel gantry 101 to 103 without removing the components of the steam turbine plant that has been trial run in the production factory. It can be installed at the installation site, and it is not necessary to remove the steam turbine plant equipment for transportation at the production plant, reducing the number of man-hours required for transportation from the production plant to the installation site. Reinstallation of the steam turbine plant to the steel mount 1 and alignment adjustment at this time are omitted, and the number of installation steps is reduced.

また、蒸気タービンプラントを構成する各機器を１台あるいは複数台に分け、軸方向に分割された鋼製架台即ち前部架台１０１、中央架台１０２あるいは後部架台１０３に夫々取付けモジュール体化し、このモジュール体５０１毎に輸送して、据付場所にて各モジュール体５０１を連結するので、図８の実施形態に示すようなタービンの数が多く全長の長い蒸気タービンプラントであっても、容易に鋼製架台１を用いたモジュール体化による輸送及び据付けを上記のような少ない作業工数で以って行なうことができる。 Further, each device constituting the steam turbine plant is divided into one or a plurality of units, and each module is attached to a steel frame divided in the axial direction, that is, the front frame 101, the central frame 102, or the rear frame 103. and transporting each body 501, so connecting each module 501 at the installation site, be a long steam turbine plant number of many full length of the turbine as shown in the embodiment of FIG. 8, easily made of steel Transportation and installation by modularization using the gantry 1 can be performed with a small number of work steps as described above.

次に図１４〜図１６は請求項１〜４の発明に対応する一実施形態に係る蒸気タービンプラントの据付装置を示し、図１４は蒸気タービン発電機の据付装置の要部外観斜視図、図１５は鋼製架台の斜視図、図１６は上記鋼製架台のコンクリート充填部の概略側面図である。 Next, FIGS. 14 to 16 show a steam turbine plant installation device according to an embodiment corresponding to the first to fourth aspects of the present invention. FIG. 14 is a perspective view of the main part of the steam turbine generator installation device. 15 is a perspective view of the steel pedestal, and FIG. 16 is a schematic side view of the concrete filling portion of the steel pedestal.

図１４において、１は多数の鋼板を溶接してなる鋼製架台で詳細な構成は後述する。上記鋼製架台１上には、高圧タービン２、中圧タービン３、２組の低圧タービン４，５及び発電機６が直列に配置、固定され、タービン発電機を構成している。１０は上記２組の低圧タービン４，５の下部に連結された復水器である。   In FIG. 14, reference numeral 1 denotes a steel mount formed by welding a large number of steel plates, and the detailed configuration will be described later. On the steel pedestal 1, a high-pressure turbine 2, an intermediate-pressure turbine 3, two sets of low-pressure turbines 4, 5 and a generator 6 are arranged and fixed in series to constitute a turbine generator. Reference numeral 10 denotes a condenser connected to the lower part of the two sets of low-pressure turbines 4 and 5.

また、７は中圧タービンと第１段低圧タービン４との間の軸受部、８は第１段低圧タービン４と第２段低圧タービン５との間の軸受部、９は第２段低圧タービン５と発電機６との間の軸受部である。さらに、１１は上記タービン発電機の各種計測用の計器で、同計器１１は上記鋼製架台１の上記高圧タービン２近傍の位置に固定されている。そして上記タービン発電機が固定された鋼製架台１は複数のばね機構及び制振ダンパ（何れも図示省略）を介して基礎架台（図示省略）に防振・耐震支持されている。   7 is a bearing portion between the intermediate pressure turbine and the first stage low pressure turbine 4, 8 is a bearing portion between the first stage low pressure turbine 4 and the second stage low pressure turbine 5, and 9 is a second stage low pressure turbine. 5 is a bearing portion between 5 and the generator 6. Furthermore, 11 is an instrument for various measurements of the turbine generator, and the instrument 11 is fixed at a position in the vicinity of the high-pressure turbine 2 of the steel mount 1. The steel gantry 1 to which the turbine generator is fixed is supported on a base gantry (not shown) by a plurality of spring mechanisms and damping dampers (all not shown).

上記鋼製架台１の詳細を示す図１５〜図１６において、１ａは上記高圧タービン２及び中圧タービン３を取付けるための高中圧取付用空間、１ｂ及び１ｃは第１低圧タービン４及び第２低圧タービン５を取付けるための低圧タービン取付用空間、１ｄは発電機６を取付けるための発電機取付用空間である。   15-16 which show the detail of the said steel mount 1, 1a is the space for high and medium pressure attachment for attaching the said high pressure turbine 2 and the intermediate pressure turbine 3, 1b and 1c are the 1st low pressure turbine 4 and the 2nd low pressure A low-pressure turbine mounting space for mounting the turbine 5, 1 d is a generator mounting space for mounting the generator 6.

上記鋼製架台１は、上記のように、多数の鋼板を溶接して構成されており、上記タービン発電機が取付けられる上部側の床板２１１、上記ばね機構や制振ダンパが取付けられる底板２２１の間に、多数の縦板２３１及び中板２４１を結合して、全体として箱形に構成される。２１ａは上記タービン発電機の取付面となる床面、２２ａは上記ばね機構及び制振ダンパの取付面となる床面である。   As described above, the steel pedestal 1 is formed by welding a number of steel plates, and includes an upper floor plate 211 to which the turbine generator is attached, and a bottom plate 221 to which the spring mechanism and damping damper are attached. A large number of vertical plates 231 and intermediate plates 241 are connected to each other to form a box shape as a whole. 21a is a floor surface that serves as a mounting surface for the turbine generator, and 22a is a floor surface that serves as a mounting surface for the spring mechanism and damping damper.

１ｅは上記中圧タービン３と第１低圧タービン４との間の軸受部７の取付面となる軸受取付面、１ｆは上記第１低圧タービン４と第２低圧タービン５との間の軸受部８の取付面となる軸受取付面、１ｇは上記第２低圧タービン５と発電機６との間の軸受部９の取付面となる軸受取付面である。また、１ｈは上記計器１１を取付けるための計器取付面である。   Reference numeral 1e denotes a bearing mounting surface serving as a mounting surface of the bearing portion 7 between the intermediate pressure turbine 3 and the first low pressure turbine 4, and reference numeral 1f denotes a bearing portion 8 between the first low pressure turbine 4 and the second low pressure turbine 5. A bearing mounting surface 1 g is a bearing mounting surface that is a mounting surface of the bearing portion 9 between the second low-pressure turbine 5 and the generator 6. Reference numeral 1h denotes a meter mounting surface for mounting the meter 11.

上記鋼製架台１において、上記タービン発電機の重量が集中的に負荷される軸受取付面１ｅ，１ｆ，１ｇの下側の空間部（タービン発電機の軸線方向の長さが、夫々ａ1 ，ａ2 ，ａ3 ）には、コンクリート２４ａ，２４ｂ，２４ｃが充填されている。 In the steel pedestal 1, the space below the bearing mounting surfaces 1e, 1f, 1g on which the weight of the turbine generator is intensively loaded (the length in the axial direction of the turbine generator is a 1 , a 2 , a 3 ) are filled with concrete 24a, 24b, 24c.

このコンクリート２４ａ，２４ｂ，２４ｃは、図１６に示されるように、鋼製架台１の上側の床板２１１の下面と下側の底板２２１の上面との間の空間部に、架台の長手方向（軸線方向）には上記のようにａ1 ，ａ2 ，ａ3 の長さで、幅方向には架台１の全幅に亘って充填され、各鋼板との間に隙間が形成されないよう、密に充填されている。 As shown in FIG. 16, the concrete 24 a, 24 b, 24 c is placed in the space between the lower surface of the upper floor plate 211 and the upper surface of the lower bottom plate 221 of the steel frame 1 in the longitudinal direction (axis line In the direction), the length is a 1 , a 2 , a 3 as described above, and in the width direction, the entire width of the gantry 1 is filled, so that no gap is formed between each steel plate. Has been.

また上記コンクリート２４ａ〜２４ｃは、上記軸受取付面１ｅ，１ｆ，１ｇの下側の空間に加えて、夫々の空間から長手方向において前後に所定距離ｂ1 及びｃ1 ，ｂ2 及びｃ2 ，ｂ3 及びｃ3 延長して（幅は適宜設定する）充填され、軸受部近傍の剛性、特にローリング荷重に対する剛性を上昇させている。 Also the concrete 24a~24c, said bearing mounting surface 1e, 1f, in addition to the lower space of 1g, the predetermined distance b 1 and c 1 back and forth in the longitudinal direction from the respective spaces, b 2 and c 2, b 3 and c 3 are extended (the width is set as appropriate) to increase the rigidity in the vicinity of the bearing, particularly the rigidity against the rolling load.

さらに、上記鋼製架台１は計器取付面１ｈの下側空間部にも、その長手方向の一定長さ即ち上記計器１１１の重量が掛かる部分の長さｄと幅ｅとに亘り、コンクリート２４ｄが上記軸受部と同様な形態で充填されている。   Further, the steel pedestal 1 has a constant length in the longitudinal direction, i.e., a length d and a width e of the portion where the weight of the instrument 111 is applied, in the lower space portion of the instrument mounting surface 1h. It is filled in the same form as the bearing.

上記のように構成された鋼製架台１において、タービン発電機の重量が集中して負荷される軸受取付面１ｅ，１ｆ，１ｇの下側の空間部にコンクリート２４ａ，２４ｂ，２４ｃが充填されているため、上記軸受部７，８，９を支持する部位の剛性が増大する。   In the steel mount 1 configured as described above, concrete 24a, 24b, and 24c are filled in the space below the bearing mounting surfaces 1e, 1f, and 1g on which the weight of the turbine generator is concentrated and loaded. Therefore, the rigidity of the part that supports the bearing parts 7, 8, and 9 increases.

これにより、鋼製架台１は、苛酷な荷重条件下にある軸受部７，８，９を支持する部位の変形が抑制されるとともに、上記剛性の増大によって固有振動数が上昇する。そして、上記コンクリート２４ａ〜２４ｃの充填量及び充填位置を適宜設定することにより、上記固有振動数をタービン発電機の運転軸回転数（定格回転数）よりも常時上位に保持することができ鋼製架台１の固有振動数と軸回転数との同期による共振の発生を防止できる。   As a result, in the steel pedestal 1, deformation of a portion that supports the bearing portions 7, 8, and 9 under severe load conditions is suppressed, and the natural frequency increases due to the increase in rigidity. Then, by appropriately setting the filling amount and filling position of the concrete 24a to 24c, the natural frequency can always be kept higher than the operating shaft rotational speed (rated rotational speed) of the turbine generator. It is possible to prevent the occurrence of resonance due to the synchronization between the natural frequency of the gantry 1 and the rotational speed of the shaft.

また、上記鋼製架台１は、軸受取付面１ｅ，１ｆ，１ｇの下部空間に連なる長手方向の一定長さ（ｂ1 及びｃ1 ，ｂ2 及びｃ2 ，ｂ3 及びｃ3 ）に亘ってコンクリート２４ａ〜２４ｃを充填しているので、各軸受部７，８，９におけるローリング荷重の支持部の剛性が増大し、ローリング荷重に対する鋼製架台１の強度が向上する。 The steel pedestal 1 extends over a certain length in the longitudinal direction (b 1 and c 1 , b 2 and c 2 , b 3 and c 3 ) connected to the lower space of the bearing mounting surfaces 1e, 1f and 1g. Since concrete 24a-24c is filled, the rigidity of the support part of the rolling load in each bearing part 7,8,9 increases, and the intensity | strength of the steel mount 1 with respect to a rolling load improves.

さらに、上記鋼製架台１は計器１１１の重量が負荷される部位にもコンクリートを充填しているので、この部分の剛性が増大し、計器１１の重量による架台１の局部的な変形が回避される。 Furthermore, since the steel pedestal 1 is filled with concrete even in the portion where the weight of the instrument 111 is loaded, the rigidity of this part increases, and local deformation of the pedestal 1 due to the weight of the instrument 11 is avoided. that.

本発明に係り本発明者が検討した第１検討例の低圧タービン及び復水器の軸心に直角方向に視たる図（図３のＡ−Ａ線矢視図）。FIG. 4 is a view (a view taken along the line A-A in FIG. 3) as viewed in a direction perpendicular to the axis of the low-pressure turbine and condenser of the first study example examined by the present inventors in connection with the present invention. 上記第１検討例におけるばね機構及び制振ダンパの詳細断面図（図１のＺ部及びＹ部詳細図）。The detailed sectional view of the spring mechanism and damping damper in the above-mentioned 1st examination example (Z section and Y section detailed drawing of Drawing 1). 本発明が適用される蒸気タービンプラントの概略側面図。1 is a schematic side view of a steam turbine plant to which the present invention is applied. 上記第１検討例における作用説明用線図。The action explanatory view in the above-mentioned 1st examination example. 本発明に係り本発明者が検討した第２検討例の蒸気タービンプラントの排油管の配置を示す概略平面図。The schematic plan view which shows arrangement | positioning of the oil drain pipe of the steam turbine plant of the 2nd study example which this inventor examined in connection with this invention. 図５のＡ矢視図。FIG. 6 is an A arrow view of FIG. 5. 鋼製架台に取付けられた蒸気タービンプラントの１例を示す外観斜視図。The external appearance perspective view which shows an example of the steam turbine plant attached to the steel mount frame. 本発明に係り本発明者が検討した第３検討例の蒸気タービンプラントの据付状態を示す要部側面図。The principal part side view which shows the installation state of the steam turbine plant of the 3rd examination example which this inventor examined in connection with this invention. 上記第３検討例における蒸気タービンプラントの据付状態を示す外観斜視図。The external appearance perspective view which shows the installation state of the steam turbine plant in the said 3rd examination example. 上記第３検討例における鋼製架台の連結部を示す側面図。The side view which shows the connection part of the steel mounts in the said 3rd examination example. 図１０のＡ−Ａ矢視図。FIG. 11 is an AA arrow view of FIG. 10. 上記第３検討例におけるモジュール体の輸送時の仮固定状態を示す要部斜視図。The principal part perspective view which shows the temporarily fixed state at the time of transport of the module body in the said 3rd examination example. 上記輸送時におけるモジュール体の固定状態を示す側面図。The side view which shows the fixed state of the module body at the time of the said transport. 本発明の一実施形態に係る蒸気タービン発電機の据付装置の要部外観斜視図。The principal part external appearance perspective view of the installation apparatus of the steam turbine generator which concerns on one Embodiment of this invention. 上記実施形態における鋼製架台の外観斜視図。The external appearance perspective view of the steel frame in the said embodiment. 上記実施形態における鋼製架台の要部側面図。The principal part side view of the steel frame in the said embodiment. 従来の復水器の取付構造を示す図１応当図。FIG. 1 is an applied diagram showing a conventional condenser mounting structure. 従来の蒸気タービンプラントの据付構造を示す正面図。The front view which shows the installation structure of the conventional steam turbine plant. 従来の鋼製架台の垂直方向断面図（図５のＢ−Ｂ線断面図）。Sectional drawing of the perpendicular direction of the conventional steel mount frame (BB sectional view of FIG. 5). 図１９のＡ−Ａ線断面図。AA line sectional view of Drawing 19.

符号の説明Explanation of symbols

１ 鋼製架台
２ 高圧タービン
３ 中圧タービン
４ 第１低圧タービン
５ 第２低圧タービン
６ 発電機
７，８，９、２１１ 軸受部
１０ 復水器
１１ 左列排油管
１２ 右列排油管
１３ 連通管
１４，１５ 枝管
１６ 集合管
１７ 油タンク
２１ No.１軸受
２２ No.２軸受
２３ No.３軸受
２４ No.４軸受
２４ａ〜２４ｄ コンクリート
２５ No.５軸受
２６ No.６軸受
２７ No.７軸受
２８ No.８軸受
２９ａ No.９軸受
２９ｂ No.１０軸受
３０ 制振ダンパ
３２，３３ 連結板
３４ ボルト
３５ ピン
４０ ばね機構
５０ 基礎架台
５１ 船体
５２ スペーサ
５３ フレーム
６１ 高圧タービン軸
６２ 中圧タービン軸
６３ａ，６３ｂ 低圧タービン軸
６４ 発電機軸
１０１ 前部架台
１０２ 中央架台
１０３ 後部架台
１０４，１０５ 結合部
５０１ モジュール体 DESCRIPTION OF SYMBOLS 1 Steel mount frame 2 High pressure turbine 3 Medium pressure turbine 4 1st low pressure turbine 5 2nd low pressure turbine 6 Generator 7,8,9,211 Bearing part 10 Condenser 11 Left row oil pipe 12 Right row oil pipe 13 Communication pipe 14, 15 Branch pipe 16 Collecting pipe 17 Oil tank 21 No. 1 bearing 22 No. 2 bearing 23 No. 3 bearing 24 No. 4 bearing 24a-24d Concrete 25 No. 5 bearing 26 No. 6 bearing 27 No. 7 bearing 28 No. 8 bearing 29a No. 9 bearing 29b No. 10 bearing 30 Damping damper 32, 33 Connecting plate 34 Bolt 35 Pin 40 Spring mechanism 50 Foundation frame 51 Hull 52 Spacer 53 Frame 61 High pressure turbine shaft 62 Medium pressure turbine shaft 63a 63b Low pressure turbine shaft 64 Generator shaft 101 Front mount 102 Central mount 103 Rear mount 104, 105 Coupling portion 501 Module body

Claims (4)

タービン、発電機を含む複数の機器を、鋼材を溶接してなる鋼製架台に固定するようにした機器の据付装置において、上記鋼製架台は複数のばね機構及び制振ダンパを介して基礎架台に防振・耐震支持され、少なくとも上記機器の軸受部の下方に位置する空間部に、同鋼製架台の軸線方向には所定の部分の長さで、幅方向には同鋼製架台の全幅に亘ってコンクリートを充填して構成されたことを特徴とする機器の据付装置。 In an apparatus installation apparatus in which a plurality of devices including a turbine and a generator are fixed to a steel frame formed by welding steel materials, the steel frame is a base frame via a plurality of spring mechanisms and vibration dampers. In the space part located at least under the bearing part of the above equipment at least in the axial direction of the steel stand, the length of the predetermined part in the axial direction, and the full width of the steel stand in the width direction An apparatus installation device characterized by being filled with concrete over a space. 請求項１に記載の機器の据付装置において、上記鋼製架台は、前記タービンを取付けるためのタービン取付用空間、及び前記発電機を取付けるための発電機取付用空間を備え、コンクリートを充填した前記空間部は、前記鋼製架台の上側の床板の下面と下側の底板の上面との間の空間部であることを特徴とする機器の据付装置。   The equipment installation apparatus according to claim 1, wherein the steel mount includes a turbine mounting space for mounting the turbine and a generator mounting space for mounting the generator, and the concrete is filled with concrete. The apparatus according to claim 1, wherein the space portion is a space portion between a lower surface of the upper floor plate and an upper surface of the lower bottom plate of the steel mount. 上記鋼製架台は、上記軸受部の下方空間に連なる長手方向前後の空間部にコンクリートを充填してなる請求項１又は２に記載の機器の据付装置。   The equipment installation apparatus according to claim 1 or 2, wherein the steel cradle is filled with concrete in a space portion in the longitudinal direction continuous to a space below the bearing portion. 上記鋼製架台は、上記機器に付設される計器の取付部の下方に位置する空間部にコンクリートを充填してなる請求項１ないし３のいずれかに記載の機器の据付装置。   The equipment installation apparatus according to any one of claims 1 to 3, wherein the steel cradle is filled with concrete in a space portion located below a mounting portion of an instrument attached to the equipment.
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CN103140652A (en) * 2011-01-19 2013-06-05 三菱重工业株式会社 Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment

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JP5583233B2 (en) * 2013-02-08 2014-09-03 三菱重工業株式会社 Vibration support base

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CN103140652A (en) * 2011-01-19 2013-06-05 三菱重工业株式会社 Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment
CN103140652B (en) * 2011-01-19 2015-06-10 三菱日立电力***株式会社 Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment
US9726045B2 (en) 2011-01-19 2017-08-08 Mitsubishi Hitachi Power Systems, Ltd. Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment

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