JPS63143303A - Cradle of nozzle diaphragm of turbine - Google Patents
Cradle of nozzle diaphragm of turbineInfo
- Publication number
- JPS63143303A JPS63143303A JP28894886A JP28894886A JPS63143303A JP S63143303 A JPS63143303 A JP S63143303A JP 28894886 A JP28894886 A JP 28894886A JP 28894886 A JP28894886 A JP 28894886A JP S63143303 A JPS63143303 A JP S63143303A
- Authority
- JP
- Japan
- Prior art keywords
- cradle
- turbine
- nozzle diaphragm
- pedestal
- pedestals
- 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.)
- Granted
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 44
- 238000009434 installation Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 15
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は主として蒸気タービンの定期点検の際に使用さ
れる、タービン用ノズルダイヤフラム受台に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a nozzle diaphragm pedestal for a turbine, which is mainly used during periodic inspection of a steam turbine.
蒸気タービンは、その営業運転に入ってからたとえば２
年毎に定期検査を行なうのが通例になっており、その検
査の際にはタービンの上半車室を取外し、ノズルダイヤ
フラムの上半及び下半を本体より取外してタービン各部
の点検を行なうが、この時取外したノズルダイヤフラム
は、その建家内のクレーンの可動範囲の関係上、タービ
ン本体近傍のタービン運転床面に並べられている。For example, a steam turbine has two
It is customary to conduct periodic inspections every year, and during these inspections, the upper half of the turbine casing is removed, the upper and lower halves of the nozzle diaphragm are removed from the main body, and each part of the turbine is inspected. Due to the movable range of the crane in the building, the nozzle diaphragms that were removed at this time were lined up on the turbine operating floor near the turbine main body.
一方、近年蒸気タービンは容量的に大きなものが採用さ
れてきており、例えば１．ＯＯＯＭＷ級蒸気タービンで
は第１０図のごとく１台の高圧タービン１と、１台の中
圧タービン２及び２台の低圧タービン３とが串状に連ら
なっており、またノズルダイヤフラム４は第１１図に示
されるように水平部より２分割構造になっており、これ
をタービン運転床面に置く場合は、ノズルダイヤフラム
４を傷つけないように、まくら木１７上に載置している
のが現状である。On the other hand, in recent years, steam turbines with larger capacities have been adopted; for example, 1. In the OOOMW class steam turbine, as shown in FIG. As shown in the figure, it has a two-part structure from the horizontal part, and when it is placed on the turbine operating floor, it is currently placed on sleepers 17 to avoid damaging the nozzle diaphragm 4. be.
しかしながら、高圧タービン１と中圧夕−ビン２、低圧
タービン３のノズルダイヤフラム４の数は上半、下半合
計で約１１４枚前後に及びこれらを載置するスペースが
膨大となり、そのためにタービンの連室の大きさを計画
した場合非常に大きな連室を必要とし不経済であるとい
う問題があった。However, the number of nozzle diaphragms 4 of the high-pressure turbine 1, intermediate-pressure turbine 2, and low-pressure turbine 3 is approximately 114 in total in the upper and lower halves, and the space to place them becomes enormous. When planning the size of the continuous rooms, there was a problem in that it required a very large continuous room, which was uneconomical.
そこで、タービンから取外されたノズルダイヤフラムを
そのタービン組立状態と同じ順序で、しかも上半は反転
、下半ば同方向に載置可能とする受台を設け、タービン
運転床面のスペースを減少させ、タービン連室の大きさ
を小さくすると共に、ノズルダイヤフラムの上半と下半
の分割面及び表裏の点検を容易にさせ、更にこのノズル
ダイヤフラム受台の形状を面素な形にして、ノズルダイ
ヤフラムをその受台に載置した状態で２段以上積み重ね
ておくことにより、タービン運転床面の占拠面積を減少
するようにしたノズルダイヤフラム受台が既に知られて
いる。Therefore, we installed a pedestal that allows the nozzle diaphragm removed from the turbine to be placed in the same order as the turbine was assembled, with the upper half inverted and the lower half in the same direction, thereby reducing the space on the turbine operating floor. In addition to reducing the size of the turbine continuous chamber, it is easy to inspect the dividing surface of the upper and lower halves of the nozzle diaphragm and the front and back sides, and the shape of the nozzle diaphragm pedestal is made into a square shape. A nozzle diaphragm pedestal is already known in which the area occupied by the turbine operating floor is reduced by stacking two or more layers of nozzle diaphragms placed on the pedestal.
しかしながら、上記蒸気タービンの定期点検は通常２年
に１度の割で行なわれ、通常運転時にはこれらノズルダ
イヤフラム受台は使用されずに保管されることになるの
で、その保管時にできるだけ分解、組立が簡単で、しか
もその保管スペースを要しないことが望まれている。However, regular inspections of the steam turbines mentioned above are normally carried out once every two years, and these nozzle diaphragm pedestals are stored unused during normal operation, so they should be disassembled and reassembled as much as possible during storage. It is desired that it be simple and that it does not require storage space.
本発明は前記のごとき要望にこたえるためになされたも
のであり、蒸気タービンの検査時にノズルダイヤフラム
をタービン組立状態と同じ順序で、しかも上半は反転、
下半ば同方向に載置するノズルダイヤフラム受台を設け
ることにより、タービン運転床面の必要スペースを少な
くすると共に、タービン運転時における上記ノズルダイ
ヤフラム受台を簡単な操作で分解、積重ねを行ない、し
かも最少保管スペースに収納できるようにすることによ
りタービン連室を小さくすることを目的としたものであ
る。The present invention was made in response to the above-mentioned needs, and when inspecting a steam turbine, the nozzle diaphragm is placed in the same order as in the turbine assembly state, and the upper half is inverted.
By providing the nozzle diaphragm pedestals placed in the same direction in the lower half, the space required on the turbine operation floor is reduced, and the nozzle diaphragm pedestals can be easily disassembled and stacked during turbine operation. The purpose is to reduce the size of the turbine compartment by allowing it to be stored in the minimum storage space.
上記の目的を達成するため、本発明のタービン用ノズル
ダイヤフラム受台は、タービン１台分のノズルダイヤフ
ラムをタービン組立状態と同じ順序で、しかも上半は反
転、下半ば同方向に載置可能な受台を、差し込み構造に
より連結可能な左右２分割受台から構成し、かつその２
分割受台の一方の受台内の上方から他方の受台の底部が
収納されるように形成すると共に、そのように収納され
たタービン１台分の上半または下半用受台を複数台が積
重ね保管可能に構成されることを特徴としたものである
。In order to achieve the above object, the nozzle diaphragm holder for a turbine of the present invention is capable of mounting the nozzle diaphragm for one turbine in the same order as in the turbine assembled state, with the upper half inverted and the lower half in the same direction. The pedestal consists of a left and right 2-piece pedestal that can be connected by a plug-in structure, and
One split pedestal is formed so that the bottom of the other pedestal is accommodated from above, and a plurality of pedestals for the upper half or lower half of one turbine are housed in this way. It is characterized by being configured so that they can be stacked and stored.
以下図面を参照して本発明の詳細な説明するが、第１図
は本発明の一実施例におけるノズルダイヤフラム受台の
平面図、第２図は第１図の正面図、第３図は第２図の側
面図、第４図、第５図、第６図、第７図は第１図のノズ
ルダイヤフラム受台を収納しながら積重ねていく手順を
示す側面図、第８閲は第７図の正面図、第９図は第８図
の平面図である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view of a nozzle diaphragm holder in an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. Figure 2 is a side view, Figure 4, Figure 5, Figure 6, and Figure 7 are side views showing the procedure for stacking the nozzle diaphragm holders in Figure 1 while storing them, and Figure 8 is Figure 7. FIG. 9 is a plan view of FIG. 8.
まず、この実施例は第１Ｏ図に示すごとき４台のタービ
ンからなる蒸気タービンのノズルダイヤフラムの点検に
使用されるものである。First, this embodiment is used to inspect the nozzle diaphragm of a steam turbine consisting of four turbines as shown in FIG. 1O.
これら一連のタービンの内、高圧タービン１及び中圧タ
ービン２用のノズルダイヤフラム受台は小形であり、保
管スペースの面で問題にする程でもないので、まず本発
明の主目的である低圧タービン３の２台分についてその
詳細を説明する。Among these series of turbines, the nozzle diaphragm pedestals for the high-pressure turbine 1 and the intermediate-pressure turbine 2 are small and do not pose a problem in terms of storage space. The details of the two units will be explained below.
そこで、第１図から第３図に示すごとく、タービン１台
分の上半または下半のノズルダイヤフラム４をそのター
ビン組立状態と同じ順序で、しかも上半は反転、下半ば
同方向に載置できる受台１０は中央部が挟まり両端部に
向かうにしたがうて拡大する枠組みからなっており、こ
の受台１０に載置されるノズルダイヤフラム４の全荷重
は第３図に示す中央部の２本の主柱５の２点にゴムパッ
ド１６を介して支持されるようになっており、受台１０
の両側に設けられた支柱９は、ノズルダイヤフラム４の
点検個所の内で特に重要な分割面の点検用としてこの受
台１０の上部に設けられた点検歩廊８を支持するために
立設されている。Therefore, as shown in Figures 1 to 3, the nozzle diaphragms 4 of the upper or lower half of one turbine are placed in the same order as in the assembled state of the turbine, with the upper half inverted and the lower half placed in the same direction. The resulting pedestal 10 consists of a frame that is sandwiched at the center and expands toward both ends. It is supported at two points on the main pillar 5 of the cradle 10 via rubber pads 16.
The pillars 9 provided on both sides of the nozzle diaphragm 4 are erected to support an inspection walkway 8 provided at the top of the pedestal 10 for inspecting the dividing surface, which is particularly important among the inspection points of the nozzle diaphragm 4. There is.
また、この点検歩廊８の各側面には、ノズルダイヤフラ
ム４の倒れ止め用のゴムパッド１６が各ノズルダイヤフ
ラム４毎に４個所設けられている。Further, on each side of the inspection walkway 8, four rubber pads 16 are provided for each nozzle diaphragm 4 to prevent the nozzle diaphragm 4 from falling.
なお、倒れ止め用部材にゴムパッド１６を用いたのは、
組立時において嵌め合部となるノズルダイヤフラム４の
側面を損傷しないようにするためである。In addition, the rubber pad 16 was used as the member for preventing falling.
This is to prevent damage to the side surface of the nozzle diaphragm 4, which is the fitting portion, during assembly.
ここで、受台１０の使用時には、ノズルダイヤフラム４
の主たる荷重は、２本の主柱５にて支持され、支柱９に
対してはわずかにガイドローラ６及び倒れ止め用のゴム
パッド１６が吊り込み時に接触する摩擦または転り抵抗
程度の力がかかるだけであり、周囲の支柱９及び上部の
点検歩廊８用枠材等の強度は積重ね時における最下段の
受台にかかる荷重で計算されるだけでよい。Here, when using the cradle 10, the nozzle diaphragm 4
The main load is supported by the two main pillars 5, and a slight force is applied to the pillars 9 to the extent of the friction or rolling resistance that the guide rollers 6 and rubber pads 16 for preventing falling come into contact with during lifting. Therefore, the strength of the surrounding pillars 9 and the upper frame material for the inspection walkway 8 need only be calculated based on the load applied to the lowermost pedestal when stacked.
また、上記点検歩廊８は、積重ね時の重量軽減のためと
、点検時に下側の様子が見やすいようにするための目的
で、その床材にエキスパンドメタルを使用しており、更
に、積重ね時に荷重の等分布化をはかるため、支柱つな
ぎ材１５を使用することで、エキスバンドメタルを変形
させないようにしている。In addition, the inspection walkway 8 uses expanded metal for its flooring in order to reduce the weight when stacking and to make it easier to see what is underneath during inspection. In order to distribute the metal evenly, the support support 15 is used to prevent the expanded metal from deforming.
そこで、本発明では上記受台１０を矢印Ｍで示す中央部
で分割した２分割受台１０Ａ、１０Ｂから構成し、その
中央の分割部には相互に嵌合する差込部１１を有する構
造とし、この差込部１１には図示されていない掛金方式
により、左右の２分割受台１０Ａ、ＩＯＢの連結及び切
離しをクレーン１２で行なう操作のみで容易に行なえる
ようにしている。Therefore, in the present invention, the above-mentioned pedestal 10 is constituted by two divided pedestals 10A and 10B divided at the center indicated by arrow M, and the central divided portion has a structure in which an insertion portion 11 that fits into each other is provided. The insertion portion 11 has a latch system (not shown), so that the left and right two-part pedestals 10A and IOB can be easily connected and disconnected only by operating the crane 12.
次に、上記左右の２分割受台１０Ａ、ＩＯＢの一方の２
分割受台１０Ａの外形寸法を他方の２分割受台１０Ｂよ
りも小さく形成し、２分割受台１０Ｂの上方から他方の
２分割受台１０Ａを、各連結部を同じ方向にしてクレー
ン１２を用いて積重ねた時、２分割受台１０Ｂ内に２分
割受台１０Ａの底部が収納されるようにしている。Next, the left and right two-split cradle 10A, one of the two IOBs,
The outer dimensions of the split pedestal 10A are formed smaller than the other two-part pedestal 10B, and the other two-part pedestal 10A is moved from above the two-part pedestal 10B with each connecting part in the same direction using the crane 12. When stacked, the bottom of the two-part pedestal 10A is accommodated within the two-part pedestal 10B.
ここで、第８図に示すクレーン１２の吊金具１３Ａ、１
３Ｂと第９図ニ示す受台１０Ａ、１０Ｂに設けた吊金具
１８Ａ、１８Ｂとは、それぞれ使用勝手の同一方向のみ
、即ち吊金具１３Ａ及び１８Ａ側のみを赤ペンキなどで
着色しており、クレーンエ２の操作時に赤色の吊金具１
３Ａ、１８Ａ同志を合わせて吊り上げることにより重心
吊りができ、受台１０Ａを受台１０Ｂに積重ねる際にも
傾斜しないでスムースに収納できるような考慮を払って
いる。Here, the hanging fittings 13A, 1 of the crane 12 shown in FIG.
3B and the hanging fittings 18A and 18B installed on the pedestals 10A and 10B shown in FIG. When operating step 2, the red hanging bracket 1
By lifting 3A and 18A together, the center of gravity can be lifted, and consideration has been given so that when stacking the pedestal 10A on the pedestal 10B, it can be stored smoothly without tilting.
なお、ノズルダイヤフラム４は、第３図に示す２点鎖線
のごとく、タービン組立状態と同じ順序で、しかも上半
は反転、下半ば同方向、つまり分割面を上向きにした状
態で載置されるので、その分割面及び左右両面からの点
検が容易に行なわれると共に、点検時にタービン運転床
面を占有するスペースを最小限にすることができる。The nozzle diaphragm 4 is placed in the same order as in the turbine assembled state, as shown by the two-dot chain line in FIG. Therefore, inspection from the divided plane and from both the right and left sides can be easily carried out, and the space occupied on the turbine operation floor during inspection can be minimized.
また、上記受台１０の各構成部材は、従来Ｈ型鋼を使用
していたが、本実施例では角パイプを使用することによ
り軽量化をはかると共に、剛性を高めることができ、普
通タービンの寿命である３０年間この受台ＩＯを長期使
用しても充分それに耐えうるようにしているが、角パイ
プを使用した場合には、Ｈ型鋼の場合に比べて片面腐食
であるため、強度の低下を防止可能であり、再塗装の回
数も減らしうると共に、その塗装面積も約半分ですむと
いう利点がある。In addition, each component of the pedestal 10 conventionally used H-shaped steel, but in this embodiment, square pipes are used to reduce weight and increase rigidity, which can extend the lifespan of a normal turbine. This pedestal IO has been designed to be able to withstand long-term use for 30 years, but when using a square pipe, it suffers from corrosion on one side compared to H-beam steel, so there is a risk of a decrease in strength. It has the advantage that it can be prevented, the number of times repainting can be reduced, and the area to be painted can be reduced by about half.
次に、上記第１図から第３図に示した受台１０を使用し
ないタービン運転時においては、第４図に実線で示すご
とく、タービン１台分の上半もしくは、下半のノズルダ
イヤフラム４の受台１０を構成する２分割受台１０Ａ、
ＩＯＢを積重ねてセットする。Next, when the turbine is operated without using the cradle 10 shown in FIGS. 1 to 3 above, as shown by the solid line in FIG. A two-part pedestal 10A constituting the pedestal 10,
Stack and set the IOBs.
第４図の上方の２点鎖線は、受台１０Ａ、１０Ｂを１セ
ツトにするためにクレーン１２を用いて受台１０Ａが受
台１０Ｂに吊り込まれる過程を示したものである。The upper two-dot chain line in FIG. 4 shows the process of hoisting the pedestal 10A onto the pedestal 10B using the crane 12 in order to make the pedestals 10A and 10B into one set.
また、第５図は第４図で１セツトにした受台１０の上に
、第４図と同様に積重ねられた別の受台１０を積重ねる
状態を示したものであり、この１セツトになった受台１
０を吊り上げるには、積重ね後、下側になった受台１０
Ｂをクレーン１２で吊り上げるようにしている。Moreover, FIG. 5 shows a state in which another pedestal 10 is stacked on top of the pedestal 10 that has been made into one set in FIG. 4 in the same manner as in FIG. The pedestal that became 1
To lift up the cradle 10, which is on the lower side after stacking
B is lifted up by a crane 12.
同様にして第６図の過程を経て、第７図に示すように、
タービン２台分の上半用受台２セツト、下半用受台２セ
ツト、合計４セツトの受台１０を次々と積重ねていく。Similarly, after going through the process shown in Figure 6, as shown in Figure 7,
A total of four sets of pedestals 10, two sets of pedestals for the upper half of two turbines and two sets of pedestals for the lower half, are stacked one after another.
なお、第３図の受台に設けられたガイドローラ６は、第
１３図に示す形状を有し、第１２図、第１４図及び第１
５図に示すようなＵ型すポート７に取外し可能に装着さ
れている。Note that the guide roller 6 provided on the pedestal in FIG. 3 has the shape shown in FIG.
It is removably attached to a U-shaped port 7 as shown in Figure 5.
これらのガイドローラ６は、ノズルダイヤフラム４の取
出し時に、このガイドローラ６が浮上がって脱落しない
ように第１４図及び第１５図に示すごとくＵ形すポート
７を傾斜して取付けており、また上記のごとく各２分割
受台１０Ａ、ＩＯＢの積重ねの邪魔にならないようにこ
れらガイドローラ６を取外す際にも、ボルト締等の構造
でないので簡単に取外しができ、支柱９の下方に取付け
られているガイドローラ収納ポケット１４に入れること
ができる。These guide rollers 6 have U-shaped ports 7 installed at an angle, as shown in FIGS. 14 and 15, so that the guide rollers 6 do not float up and fall off when the nozzle diaphragm 4 is taken out. As mentioned above, when removing the guide rollers 6 so as not to interfere with the stacking of the two-split pedestals 10A and IOBs, they can be easily removed since they do not have a structure such as bolt tightening, and they can be easily removed by attaching them to the bottom of the support column 9. It can be placed in the guide roller storage pocket 14.
このガイドローラ収納ポケット１４は長さの異なるガイ
ドローラ６を使用時に間違いない位置に取付けられるよ
うに使用場所ごとに設けられている。The guide roller storage pockets 14 are provided at each use location so that guide rollers 6 of different lengths can be installed in the correct position during use.
なお、このようなガイドローラ６を採用したのは、クソ
シッン材としてゴム板を固定してガイドしていた従来の
ものが摩擦抵抗であったのに対し、このガイドローラ６
を使用することにより、このガイド部分が転がり抵抗に
なるので、クレーンによる位置決め操作が容易になると
共に、受台ｌＯに無理な荷重がかからないようにするた
めである。In addition, the reason why such a guide roller 6 was adopted was that the conventional guide roller used a fixed rubber plate as a thin material and was guided by frictional resistance, but this guide roller 6
By using the guide portion, the guide portion becomes a rolling resistance, which facilitates the positioning operation using the crane, and also prevents an unreasonable load from being applied to the pedestal IO.
以上のどと（、各ノズルダイヤフラム４ごとの受台１０
を順次積重ねて保管することになるが、地震を考慮して
重心を下げ、保管高さをできるだけ低くするために、受
台の原形をくずさずに、上下に嵌め込む方式を採用して
おり、例えば本実施例では第８図に示す矢印Ｘが２分割
受台１０Ａ、ＩＯＢの２段重ねの重心高さであり、矢印
Ｙが２分割受台１０Ａ、ＩＯＢの８段重ね、即ち低圧タ
ービン３の２台分４セツトの受台１０の重心高さであり
、重心が低くなっている。(10 cradle 10 for each nozzle diaphragm 4)
These are stacked one on top of the other for storage, but in order to lower the center of gravity and keep the storage height as low as possible in consideration of earthquakes, we have adopted a method in which the cradle is inserted into the top and bottom without destroying its original shape. For example, in this embodiment, the arrow X shown in FIG. 8 is the height of the center of gravity of the two-part pedestal 10A and the IOB stacked in two stages, and the arrow Y is the height of the center of gravity of the two-part pedestal 10A and the eight stacked IOBs, that is, the low-pressure turbine 3. This is the height of the center of gravity of four sets of pedestals 10 for two cars, and the center of gravity is low.
また、最下段の受台１０が最も大きな積載荷重となるが
、１セツト毎の積重ね順序が順不同になっても各メンバ
ーが充分耐えられるように、各低圧タービン３用のノズ
ルダイヤフラム支持用の受台１０の支柱中間部には、支
柱つなぎ材１５及び積重ね時のベース兼用のビーム等を
設は荷重の等分布をはかるようにしている。In addition, although the lowest stage pedestal 10 has the largest load, the pedestals for supporting the nozzle diaphragm of each low-pressure turbine 3 are designed so that each member can sufficiently withstand even if the stacking order of each set is out of order. At the middle of the column of the stand 10, a column connecting material 15 and a beam that also serves as a base when stacked are installed to ensure equal distribution of load.
なお、各受台１０ごとに、クレーン１２用の吊金具の取
外しや、地震対策用のローブ結索のための昇降用アルミ
梯子２３を第９図などに示すごとく設けている。In addition, as shown in FIG. 9, an aluminum ladder 23 for lifting and lowering is provided for each pedestal 10 for removing the hanging fitting for the crane 12 and for tying lobes for earthquake countermeasures.
なお、高圧タービンｌ及び中圧タービン２用のノズルダ
イヤフラム受台については、第１６図の平面図、第１７
図の正面図及び第１８図の側面図に示すごとく、高圧用
受台２ｏを上部に１段、そして中圧用受台２１をその下
部に２段積重ねるようにし、この場合もクレーン１２に
てそれぞれ吊り上げるようにしているが、これらの高圧
用受台２０笈び中圧用受台２１の構造及び積重ねの手順
史にはその保管方法などは前記低圧タービン３用の受台
１０と同様であり、その説明は省略する。Note that the nozzle diaphragm pedestals for the high-pressure turbine 1 and the intermediate-pressure turbine 2 are shown in the plan view of FIG.
As shown in the front view of the figure and the side view of FIG. Although they are each lifted up, the structure of the high-pressure pedestal 20 and the medium-pressure pedestal 21, the procedure for stacking them, and the storage method thereof are the same as those for the pedestal 10 for the low-pressure turbine 3. The explanation will be omitted.
以上に説明したごとく、本発明のタービン用ノズルダイ
ヤフラム受台を採用すれば、タービンの寿命約３０年の
長期にわたって２年に１回の定期点検時に使用される受
台の組立、分解作業が、従来ボルト組立されていたもの
を一新して、殆んど使用状態に近い状態で保管されてい
るものをクレーンを使用して配置すれば、そのまま使用
できると共に、組立部材の照合、ボルト組立等のわずら
れしさから開放され、永年使用するために作業者が点検
毎にかわっても何等支障を感じることなく、組立、分解
、保管に要する時間も殆んど受台の運搬時間だけですむ
ので、大幅に工数、時間を節減できると同時に、猫の手
もかりたいシャフトダウン時に手間を省略して点検時間
を短縮できることは大きなメリットである。As explained above, if the turbine nozzle diaphragm pedestal of the present invention is adopted, the assembly and disassembly work of the pedestal used during periodic inspections once every two years over the long life of the turbine of about 30 years will be possible. By refurbishing items that were previously assembled with bolts and using a crane to place items that are stored in almost used condition, they can be used as is, and also allow for collation of assembly parts, bolt assembly, etc. Since it can be used for a long time, there is no problem even if the operator changes every time it is inspected, and the time required for assembly, disassembly, and storage is almost the same as transporting the cradle. Therefore, it is a great advantage to be able to save a lot of man-hours and time, and at the same time, it is possible to shorten the inspection time by omitting the trouble when the shaft is down, which requires the help of a cat.
従って、本発明のタービン用ノズルダイヤフラム受台を
採用することにより、ノズルダイヤフラム点検が非常に
容易にでき、しかもタービン運転床面の必要スペースを
少なくできるという効果があり、また、タービン運転時
には利用されない遊休スペース、つまり各階吹抜きの吊
り上げゾーンを利用してノズルダイヤフラム受台を立体
的に保管でき連室を受０台保管スペース確保の目的で特
に広くしなくてすむといった経済的メリットがあり、そ
の分だけ連室スペースの有効利用がはかれることになる
。Therefore, by adopting the nozzle diaphragm holder for a turbine of the present invention, the nozzle diaphragm can be inspected very easily, and the space required on the turbine operation floor can be reduced. There are economic advantages in that the idle space, that is, the lifting zone of the atrium on each floor, can be used to store the nozzle diaphragm cradle three-dimensionally, and the consecutive rooms do not have to be particularly large in order to secure storage space for 0 pedestals. This will allow for more effective use of shared room space.
また、ノズルダイヤフラム積載時にはタービン組立状態
と同じ順序で、しかも上半は反転、下半ば同方向に載置
されるので、クレーン操作が容易になり効率的な作業が
できる。Furthermore, when loading the nozzle diaphragm, the upper half is reversed and the lower half is loaded in the same direction as in the turbine assembly, making crane operation easier and more efficient.
更に、各受台にかかる外力をできる範囲で少なくする構
造にしていると同時に、積重ねによる保管時にも荷重の
等分化をはかることにより、受台重量を大幅に軽量化で
きるという経済メリットもある。Furthermore, the structure reduces the external force applied to each pedestal as much as possible, and at the same time, the weight of the pedestals can be significantly reduced by dividing the load evenly during storage by stacking, which has the economic advantage of being able to significantly reduce the weight of the pedestals.
第１図は本発明の一実施例におけるノズルダイヤフラム
受台の平面図、第２図は第１図の正面図、第３図は第２
図の側面図、第４図、第５図、第６図及び第７図は第１
図のノズルダイヤフラム受台を収納しながら積重ねてい
く手順を示す側面図、第８図は第７図の正面図、第９図
は第８図の平面図、第１０図は蒸気タービンの配置説明
図、第１１図は実施例のノズルダイヤフラムの点検時の
載置状態を示す斜視図、第１２図は第３図の受台の要部
拡大の側面図、第１３図は第３図のガイドローラの一部
破断で示す拡大の平面図、第１４図は第１２図のＵ形す
ポートを示す側面図、第１５図は第１４図の正面図、第
１６図、第１７図及び第１８図は高圧用及び中圧用ター
ビンの受台の積重ね状態を示しており、第１６図はその
平面図、第１７図は正面図、そして第１８図は側面図を
示している。
４・・・ノズルダイヤフラム、１０・・・受台、１０Ａ
、ＩＯＢ・・・２分割受台、１１・・・差込部、１２・
・・クレーン。FIG. 1 is a plan view of a nozzle diaphragm holder according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG.
The side view of the figure, Figure 4, Figure 5, Figure 6, and Figure 7 are
Figure 8 is a front view of Figure 7, Figure 9 is a plan view of Figure 8, Figure 10 is an explanation of the arrangement of the steam turbine. Figure 11 is a perspective view showing the nozzle diaphragm of the embodiment in a state in which it is placed during inspection, Figure 12 is an enlarged side view of the main part of the cradle in Figure 3, and Figure 13 is the guide in Figure 3. 14 is a side view showing the U-shaped port in FIG. 12; FIG. 15 is a front view of FIG. 14; FIGS. 16, 17, and 18. The figures show the stacked state of the pedestals of high-pressure and intermediate-pressure turbines, with FIG. 16 showing a plan view, FIG. 17 showing a front view, and FIG. 18 showing a side view. 4... Nozzle diaphragm, 10... cradle, 10A
, IOB...2-split cradle, 11...insertion part, 12.
··crane.
Claims (1)
１セットをタービン組立状態と同じ順序で、しかも上半
は反転、下半は同方向に載置可能な受台を、差し込み構
造により連結可能な左右２分割受台から構成し、かつそ
の２分割受台の一方の受台内の上方から他方の受台の底
部が収納されるように形成すると共に、そのように収納
されたタービン１台分の上半または下半受台の複数台分
が積重ね保管可能に構成されたタービンノズルダイヤフ
ラム受台。One set each of the upper and lower halves of the nozzle diaphragm for one turbine can be connected in the same order as the turbine assembly, with the upper half inverted and the lower half in the same direction using a cradle that can be connected using a plug-in structure. It is composed of a left and right split pedestal, and is formed so that the bottom of one of the two split pedestals is housed from above the other pedestal, and one turbine housed in such a manner. A turbine nozzle diaphragm holder configured so that multiple upper or lower half holders can be stacked and stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28894886A JPS63143303A (en) | 1986-12-05 | 1986-12-05 | Cradle of nozzle diaphragm of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28894886A JPS63143303A (en) | 1986-12-05 | 1986-12-05 | Cradle of nozzle diaphragm of turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63143303A true JPS63143303A (en) | 1988-06-15 |
| JPH0551761B2 JPH0551761B2 (en) | 1993-08-03 |
Family
ID=17736879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28894886A Granted JPS63143303A (en) | 1986-12-05 | 1986-12-05 | Cradle of nozzle diaphragm of turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63143303A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01310868A (en) * | 1988-06-10 | 1989-12-14 | Denki Kogyo Co Ltd | Strengthening of plate-shaped metal material |
| JPH09151706A (en) * | 1995-11-30 | 1997-06-10 | Sanzou Kikai Buhin Kako Center:Kk | Nozzle diaphragm receiving platform for turbine |
| WO2001012955A1 (en) * | 1999-08-11 | 2001-02-22 | Hitachi, Ltd. | Method of disassembling turbine equipment and the turbine equipment |
| US6837673B2 (en) | 2002-01-25 | 2005-01-04 | Hitachi, Ltd. | Turbine-unit disassembling method and turbine unit |
| JP2006274849A (en) * | 2005-03-28 | 2006-10-12 | Hitachi Plant Technologies Ltd | Cradle for turbine diaphragm upper half |
| JP2010159709A (en) * | 2009-01-09 | 2010-07-22 | Jfe Steel Corp | Carriage for carrying turbine stator vane, frame for gathering carriage for carrying a plurality of turbine stator vanes, carriage for carrying a plurality of turbine stator vanes, assembly of frame and polishing method of turbine stator vane |
| JP2020197158A (en) * | 2019-05-31 | 2020-12-10 | 三菱パワー株式会社 | Rotor assembly method, rotor disc holding jig, and rotor stand |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728741U (en) * | 1980-07-23 | 1982-02-15 | ||
| JPS5862935U (en) * | 1981-10-24 | 1983-04-27 | 日本エレクタ−・シエルフ株式会社 | Single storage shelf |
| JPS5873904U (en) * | 1981-11-13 | 1983-05-19 | 株式会社東芝 | Nozzle diaphragm cradle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629657A (en) * | 1979-08-16 | 1981-03-25 | Shirikoroi Kenkyusho:Kk | High silicon two phase stainless steel |
-
1986
- 1986-12-05 JP JP28894886A patent/JPS63143303A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728741U (en) * | 1980-07-23 | 1982-02-15 | ||
| JPS5862935U (en) * | 1981-10-24 | 1983-04-27 | 日本エレクタ−・シエルフ株式会社 | Single storage shelf |
| JPS5873904U (en) * | 1981-11-13 | 1983-05-19 | 株式会社東芝 | Nozzle diaphragm cradle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01310868A (en) * | 1988-06-10 | 1989-12-14 | Denki Kogyo Co Ltd | Strengthening of plate-shaped metal material |
| JPH09151706A (en) * | 1995-11-30 | 1997-06-10 | Sanzou Kikai Buhin Kako Center:Kk | Nozzle diaphragm receiving platform for turbine |
| WO2001012955A1 (en) * | 1999-08-11 | 2001-02-22 | Hitachi, Ltd. | Method of disassembling turbine equipment and the turbine equipment |
| US6609878B1 (en) | 1999-08-11 | 2003-08-26 | Hitachi, Ltd. | Method of disassembling turbine equipment and the turbine equipment |
| US6837673B2 (en) | 2002-01-25 | 2005-01-04 | Hitachi, Ltd. | Turbine-unit disassembling method and turbine unit |
| JP2006274849A (en) * | 2005-03-28 | 2006-10-12 | Hitachi Plant Technologies Ltd | Cradle for turbine diaphragm upper half |
| JP4706826B2 (en) * | 2005-03-28 | 2011-06-22 | 株式会社日立プラントテクノロジー | Turbine diaphragm upper half cradle |
| JP2010159709A (en) * | 2009-01-09 | 2010-07-22 | Jfe Steel Corp | Carriage for carrying turbine stator vane, frame for gathering carriage for carrying a plurality of turbine stator vanes, carriage for carrying a plurality of turbine stator vanes, assembly of frame and polishing method of turbine stator vane |
| JP2020197158A (en) * | 2019-05-31 | 2020-12-10 | 三菱パワー株式会社 | Rotor assembly method, rotor disc holding jig, and rotor stand |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0551761B2 (en) | 1993-08-03 |
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