JPH11285190A - Shielding plate of turbine generator and its manufacture - Google Patents
Shielding plate of turbine generator and its manufactureInfo
- Publication number
- JPH11285190A JPH11285190A JP8457398A JP8457398A JPH11285190A JP H11285190 A JPH11285190 A JP H11285190A JP 8457398 A JP8457398 A JP 8457398A JP 8457398 A JP8457398 A JP 8457398A JP H11285190 A JPH11285190 A JP H11285190A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- turbine generator
- welding groove
- face
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はタービン発電機のコ
イルエンド部に発生する磁束回路を遮蔽するためのター
ビン発電機のシールド板およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield plate of a turbine generator for shielding a magnetic flux circuit generated at a coil end of the turbine generator and a method of manufacturing the shield plate.
【０００２】[0002]
【従来の技術】図３はタービン発電機の概略構成を示す
部分断面図である。図３に示すように、タービン発電機
は、ロータ５と、ロータ５に沿って延びる円筒状の鉄心
３と、鉄心３内を貫通して延びるコイル２と、鉄心３の
端部に設けられた磁性体からなる押え板４とを備えてい
る。また押え板４には、コイルエンド部２ａに発生する
磁束回路の鉄心３への侵入により押え板４が加熱するこ
とを防止するため、銅等の非磁性体からなるシールド板
１が覆われている。2. Description of the Related Art FIG. 3 is a partial sectional view showing a schematic configuration of a turbine generator. As shown in FIG. 3, the turbine generator is provided at a rotor 5, a cylindrical core 3 extending along the rotor 5, a coil 2 extending through the core 3, and an end of the core 3. And a holding plate 4 made of a magnetic material. The presser plate 4 is covered with a shield plate 1 made of a non-magnetic material such as copper in order to prevent the presser plate 4 from being heated by the intrusion of the magnetic flux circuit generated in the coil end portion 2a into the iron core 3. I have.
【０００３】図４は図３に示すシールド板１をIV方向か
ら見た部分正面図である。図３および図４に示すよう
に、シールド板１は、押え板４の形状に対応した複雑な
形状をなしており、中空状の円錐台形状部品１ａと、円
錐台形状部品１ａの下端部が受け入れられる略円形の開
口部を有するドーナツ形状平板部品１ｂとを備えてい
る。ここで、シールド板１が延性に富む銅等からなる場
合には、平板を銅工および曲げ加工により整形するとと
もに円錐部分を絞り出すことにより円錐台形状部品１ａ
を形成することができる。しかしながら、このような絞
り加工によりドーナツ形状平板部品１ｂの部分までをも
絞り出すことは困難であるので、円錐台形状部品１ａお
よびドーナツ形状平板部品１ｂをそれぞれ別々に製作し
た後、溶接開先６の位置で円錐台形状部品１ａとドーナ
ツ形状平板部品１ｂとを溶接して一体化している。FIG. 4 is a partial front view of the shield plate 1 shown in FIG. As shown in FIGS. 3 and 4, the shield plate 1 has a complicated shape corresponding to the shape of the holding plate 4, and has a hollow frustoconical part 1 a and a lower end of the frustoconical part 1 a. And a donut-shaped flat part 1b having a substantially circular opening to be received. Here, when the shield plate 1 is made of ductile copper or the like, the flat plate is shaped by copper work and bending, and the conical portion is squeezed out to form a truncated conical part 1a.
Can be formed. However, it is difficult to squeeze out even the donut-shaped flat part 1b by such drawing, so that the frustoconical part 1a and the donut-shaped flat part 1b are separately manufactured, and then the welding groove 6 is formed. At the position, the truncated conical part 1a and the donut-shaped flat part 1b are welded and integrated.
【０００４】図５（ａ）（ｂ）は従来のタービン発電機
のシールド板およびその製造方法を説明するための図で
ある。ここで、図５（ａ）は従来のシールド板の断面図
（図４のIII−III線参照）、図５（ｂ）は図５（ａ）の
Ｃ部分の拡大図である。図５（ａ）（ｂ）に示すよう
に、従来においては、円錐台形状部品１ａの下端部１３
の曲げＲ止まりに位置する端面とドーナツ形状平板部品
１ｂの開口部の端面とを対向させて溶接開先６を形成す
るとともに、溶接開先６の裏側にセラミックス材料から
なる裏当て材８を配置し、溶接開先６の位置で円錐台形
状部品１ａとドーナツ形状平板部品１ｂとを溶接して一
体化している。なお、このようにして一体化されたシー
ルド板１は、溶接金属７の仕上げ整形および機械加工が
施された後、図３に示すような状態に組み立てられる。FIGS. 5A and 5B are diagrams for explaining a conventional shield plate of a turbine generator and a method of manufacturing the shield plate. Here, FIG. 5A is a sectional view of a conventional shield plate (see the line III-III in FIG. 4), and FIG. 5B is an enlarged view of a portion C in FIG. 5A. As shown in FIGS. 5 (a) and 5 (b), conventionally, the lower end portion 13 of the frusto-conical part 1a is formed.
The welding groove 6 is formed by making the end face located at the end of the bending R face the end face of the opening of the donut-shaped flat part 1b, and a backing material 8 made of a ceramic material is arranged on the back side of the welding groove 6. At the position of the welding groove 6, the frusto-conical component 1a and the donut-shaped flat component 1b are welded and integrated. The shield plate 1 integrated in this manner is assembled in a state as shown in FIG. 3 after the finish shaping and machining of the weld metal 7 are performed.
【０００５】[0005]
【発明が解決しようとする課題】上述したように、従来
においては、円錐台形状部品１ａの下端部１３の曲げＲ
止まりに位置する端面とドーナツ形状平板部品１ｂの開
口部の端面とを対向させて溶接開先６を形成するととも
に、溶接開先６の裏側にセラミックス材料からなる裏当
て材８を配置し、溶接開先６の位置で円錐台形状部品１
ａとドーナツ形状平板部品１ｂとを溶接して一体化して
いる。As described above, in the prior art, the bending radius R of the lower end portion 13 of the frusto-conical part 1a has been conventionally known.
A welding groove 6 is formed by making the end face located at the stop face the end face of the opening of the donut-shaped flat part 1b, and a backing material 8 made of a ceramic material is arranged behind the welding groove 6 to perform welding. Frusto-conical part 1 at groove 6
a and the donut-shaped flat plate part 1b are integrated by welding.
【０００６】しかしながら、従来のシールド板１では、
溶接開先６が曲げＲ部に位置しているので、形状変化に
起因する溶接欠陥が発生し易く、また曲げＲ部にかかる
溶接金属７表面を機械加工により仕上げ整形することが
困難であるという問題がある。[0006] However, in the conventional shield plate 1,
Since the welding groove 6 is located at the bending R portion, it is easy to generate a welding defect due to a change in shape, and it is difficult to finish and shape the surface of the welding metal 7 over the bending R portion by machining. There's a problem.
【０００７】また、溶接開先６の裏側に配置された裏当
て材８がセラミックス材料からなるので、大電流ＭＩＧ
（metal inert gas ）溶接法等により片面溶接する場合
に裏当て材８の一部が溶融してしまうというおそれがあ
り、また裏当て材８が溶融しないように電流値を下げた
場合には溶接開先６で十分な溶融がなされないという問
題がある。Further, since the backing material 8 disposed on the back side of the welding groove 6 is made of a ceramic material, a large current MIG can be obtained.
(Metal inert gas) When one-side welding is performed by a welding method or the like, there is a possibility that a part of the backing material 8 is melted, and when the current value is reduced so that the backing material 8 is not melted, welding is performed. There is a problem that the groove 6 does not melt sufficiently.
【０００８】本発明はこのような点を考慮してなされた
ものであり、寸法精度が良好でかつ仕上げ整形が易し
く、また大電流ＭＩＧ溶接法等により片面溶接する場合
でも溶け込み不足のない品質的に好ましいタービン発電
機のシールド板およびその製造方法を提供することを目
的とする。The present invention has been made in view of the above points, and has good dimensional accuracy, easy finish shaping, and high quality without insufficient penetration even when one-side welding is performed by a large current MIG welding method or the like. It is an object of the present invention to provide a shield plate of a turbine generator and a method of manufacturing the same.
【０００９】[0009]
【課題を解決するための手段】本発明は、中空状の円錐
台形状部品と、前記円錐台形状部品の一側端部が受け入
れられる略円形の開口部を有するドーナツ形状平板部品
とを備え、前記円錐台形状部品の前記一側端部は曲げ部
と、この曲げ部から外方に延びるフランジ部とを有し、
このフランジ部の端面と前記ドーナツ形状平板部品の前
記開口部の端面とが溶接されていることを特徴とするタ
ービン発電機のシールド板を提供する。SUMMARY OF THE INVENTION The present invention comprises a hollow frustoconical part and a donut-shaped flat part having a substantially circular opening for receiving one end of the frustoconical part; The one end of the truncated cone-shaped part has a bent portion and a flange portion extending outward from the bent portion,
An end face of the flange portion and an end face of the opening of the donut-shaped flat part are welded to each other, and a shield plate for a turbine generator is provided.
【００１０】また本発明は、中空状の円錐台形状部品の
一側端部の端面とドーナツ形状平板部品の開口部の端面
とを対向させて溶接開先を形成する工程と、前記溶接開
先の裏側にカーボン材料からなる裏当て材を配置する工
程と、前記溶接開先の表側から前記円錐台形状部品と前
記ドーナツ形状平板部品とを片面溶接する工程とを含む
ことを特徴とするタービン発電機のシールド板の製造方
法を提供する。Further, the present invention provides a step of forming a welding groove by making an end face of one side end of a hollow frustoconical part face an end face of an opening of a donut-shaped flat part; A step of arranging a backing material made of a carbon material on the back side of the workpiece, and a step of performing one-side welding of the truncated cone-shaped part and the donut-shaped flat part from the front side of the welding groove. Provided is a method for manufacturing a shield plate of a machine.
【００１１】本発明によれば、溶接開先が円錐台形状部
品の曲げ部から十分に離れた位置にあり、余盛り溶接金
属が曲げ部にかかることなく平坦なフランジ部に位置す
るので、溶接金属表面を機械加工により容易に仕上げ整
形することができる。また、溶接開先が円錐台形状部品
の曲げ部から十分に離れた位置にあるので、形状変化に
起因する溶接欠陥が発生しにくい。According to the present invention, the welding groove is located at a position sufficiently distant from the bent portion of the truncated cone-shaped part, and the excess weld metal is located on the flat flange portion without hitting the bent portion. The metal surface can be easily finished and shaped by machining. Further, since the welding groove is located at a position sufficiently distant from the bent portion of the truncated cone-shaped part, welding defects due to the shape change are less likely to occur.
【００１２】また本発明によれば、溶接開先の裏側に耐
熱性に優れたカーボン材料からなる裏当て材が配置され
ているので、溶接開先から流出した多量の溶融金属を保
持することができ、このため大電流ＭＩＧ溶接法等によ
り溶け込み不足のない溶接条件で溶接を行うことができ
る。Further, according to the present invention, since the backing material made of a carbon material having excellent heat resistance is arranged on the back side of the welding groove, a large amount of molten metal flowing out of the welding groove can be held. For this reason, welding can be performed under a welding condition without insufficient penetration by a large current MIG welding method or the like.
【００１３】[0013]
【発明の実施の形態】第１の実施の形態 以下、図面を参照して本発明の実施の形態について説明
する。図１（ａ）（ｂ）は本発明によるタービン発電機
のシールド板およびその製造方法の第１の実施の形態を
説明するための図である。ここで、図１（ａ）はシール
ド板の断面図（図４のIII−III線参照）、図１（ｂ）は
図１（ａ）のＡ部分の拡大図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are views for explaining a first embodiment of a shield plate of a turbine generator and a method of manufacturing the shield plate according to the present invention. Here, FIG. 1A is a cross-sectional view of the shield plate (see the line III-III in FIG. 4), and FIG. 1B is an enlarged view of a portion A in FIG.
【００１４】図１（ａ）（ｂ）に示すように、タービン
発電機のシールド板１は、中空状の円錐台形状部品１ａ
と、円錐台形状部品１ａの下端部１３が受け入れられる
略円形の開口部を有するドーナツ形状平板部品１ｂとを
備えている。円錐台形状部品１ａの下端部１３は曲げＲ
部（曲げ部）１５と、この曲げＲ部１５から外方に延び
るフランジ部１６とを有し、溶接開先６の位置でフラン
ジ部１６の端面とドーナツ形状平板部品１ｂの開口部の
端面とが溶接されている。なお、フランジ部１６は曲げ
Ｒ部１５からドーナツ形状平板部品１ｂの板厚以上の距
離Ｓだけ外方に延びている。すなわち、曲げＲ部１５の
曲げＲ止まりと溶接開先６との間の距離Ｓは次式（１）
のような関係にある。 （距離Ｓ）≧（ドーナツ形状平板部品１ｂの板厚） … （１）As shown in FIGS. 1 (a) and 1 (b), a shield plate 1 of a turbine generator has a hollow frustoconical part 1a.
And a donut-shaped flat part 1b having a substantially circular opening for receiving the lower end 13 of the truncated conical part 1a. The lower end 13 of the truncated conical part 1a is bent R
(A bent portion) 15 and a flange portion 16 extending outward from the bent R portion 15. At the position of the welding groove 6, the end face of the flange portion 16 and the end face of the opening of the donut-shaped flat plate part 1 b are formed. Are welded. Note that the flange portion 16 extends outward from the bent portion 15 by a distance S that is equal to or greater than the plate thickness of the donut-shaped flat plate part 1b. That is, the distance S between the bending R stop of the bending R portion 15 and the welding groove 6 is expressed by the following equation (1).
The relationship is as follows. (Distance S) ≧ (Thickness of donut shaped flat part 1b) (1)
【００１５】次に、このような構成からなるタービン発
電機のシールド板の製造方法について説明する。Next, a method of manufacturing a shield plate for a turbine generator having such a configuration will be described.
【００１６】まず、円錐台形状部品１ａの下端部１３の
端面とドーナツ形状平板部品１ｂの開口部の端面とを対
向させて溶接開先６を形成するとともに、溶接開先６の
裏側にカーボン材料からなる裏当て材９を配置する。な
お、図１（ｂ）に示すように、裏当て材９のうち溶接線
に対応する部分には１ｍｍ以上の深さの溝部１０が形成
されている。First, a welding groove 6 is formed with the end face of the lower end portion 13 of the frusto-conical part 1a and the end face of the opening of the donut-shaped flat part 1b facing each other. The backing material 9 made of is arranged. As shown in FIG. 1B, a groove 10 having a depth of 1 mm or more is formed in a portion of the backing material 9 corresponding to the welding line.
【００１７】そしてこの状態で、溶接開先６の表側から
円錐台形状部品１ａとドーナツ形状平板部品１ｂとを大
電流ＭＩＧ溶接法により片面溶接する。このとき、溶接
開先６は大電流ＭＩＧ溶接により溶融して溶融金属が重
力に従って下方に流出するが、このようにして流出した
溶融金属は溶接開先６の裏側に配置されたカーボン材料
の裏当て材９により保持される。また、溶融金属は溶接
開先６の表側にも溢れるが、このようにして溢れた溶融
金属はその表面張力等により保持され、冷却後は余盛り
溶接金属（表面ビード）となる。なお、この余盛り溶接
金属はタービン発電機の押え板４側に位置して押え板４
と接することとなるので、溶接金属７表面を機械加工に
より仕上げ整形する。In this state, the frusto-conical part 1a and the donut-shaped flat part 1b are welded on one side from the front side of the welding groove 6 by a large current MIG welding method. At this time, the welding groove 6 is melted by the large current MIG welding, and the molten metal flows downward according to gravity. The molten metal flowing out in this manner is applied to the back of the carbon material disposed on the back side of the welding groove 6. It is held by the patch 9. Further, the molten metal overflows on the front side of the welding groove 6, but the molten metal overflowing in this way is retained by its surface tension and the like, and after cooling, it becomes a surplus weld metal (surface bead). The extra weld metal is located on the presser plate 4 side of the turbine generator.
Therefore, the surface of the weld metal 7 is finished and shaped by machining.
【００１８】本発明の第１の実施の形態によれば、溶接
開先６が円錐台形状部品１ａの曲げＲ部１５から十分に
離れた位置にあり、余盛り溶接金属（表面ビード）が円
錐台形状部品１ａの曲げＲ部１５にかかることなく平坦
なフランジ部１６に位置するので、溶接金属７表面を機
械加工により容易に仕上げ整形することができる。ま
た、溶接開先６が曲げＲ部１５から十分に離れた位置に
あるので、形状変化に起因する溶接欠陥が発生しにく
い。According to the first embodiment of the present invention, the welding groove 6 is located at a position sufficiently distant from the bending R portion 15 of the truncated conical part 1a, and the excess weld metal (surface bead) is conical. The surface of the weld metal 7 can be easily finished and shaped by machining because it is located on the flat flange portion 16 without being applied to the bending R portion 15 of the trapezoidal component 1a. Further, since the welding groove 6 is located at a position sufficiently distant from the bending R portion 15, a welding defect due to a change in shape is less likely to occur.
【００１９】また本発明の第１の実施の形態によれば、
溶接開先６の裏側に耐熱性に優れたカーボン材料からな
る裏当て材９が配置されているので、溶接開先６から流
出した多量の溶融金属を保持することができ、このため
大電流ＭＩＧ溶接法等により溶け込み不足のない溶接条
件で溶接を行うことができる。また、裏当て材９のうち
溶融金属に直接接する部分には溝部１０が形成されてい
るので、凸状の良好な裏波ビードを形成することがで
き、このため凹状の裏波ビードの場合に多発する溶接欠
陥を防止することができる。According to the first embodiment of the present invention,
Since the backing material 9 made of a carbon material having excellent heat resistance is disposed on the back side of the welding groove 6, a large amount of molten metal flowing out of the welding groove 6 can be retained, and thus a large current MIG can be obtained. Welding can be performed under welding conditions that do not cause insufficient penetration by a welding method or the like. In addition, since the groove 10 is formed in a portion of the backing material 9 that is in direct contact with the molten metal, a good convex backside bead can be formed. Therefore, in the case of a concave backside bead, Frequent welding defects can be prevented.
【００２０】なお上述した第１の実施の形態において
は、裏当て材９に１ｍｍ以上の深さの溝部１０を形成し
たが、溝部１０の深さは溶接中の電流値等に応じて任意
に設定することができる。In the first embodiment described above, the groove 10 having a depth of 1 mm or more is formed in the backing material 9, but the depth of the groove 10 can be arbitrarily determined according to the current value during welding or the like. Can be set.
【００２１】第２の実施の形態 次に、図２（ａ）（ｂ）により、本発明によるタービン
発電機のシールド板の製造方法の第２の実施の形態につ
いて説明する。本発明の第２の実施の形態は、裏当て材
と溶接開先との間に金属板を挿入して溶接を行うように
した点を除いて、他は図１（ａ）（ｂ）に示す第１の実
施の形態と略同一である。本発明の第２の実施の形態に
おいて、図１（ａ）（ｂ）に示す第１の実施の形態と同
一部分には同一符号を付して詳細な説明は省略する。な
お、図２（ａ）はシールド板の断面図（図４のIII−III
線参照）、図２（ｂ）は図２（ａ）のＢ部分の拡大図で
ある。Second Embodiment Next, a second embodiment of the method for manufacturing a shield plate of a turbine generator according to the present invention will be described with reference to FIGS. The second embodiment of the present invention is the same as that shown in FIGS. 1A and 1B except that a metal plate is inserted between a backing material and a welding groove to perform welding. This is substantially the same as the first embodiment shown. In the second embodiment of the present invention, the same portions as those in the first embodiment shown in FIGS. 1A and 1B are denoted by the same reference numerals, and detailed description is omitted. FIG. 2A is a cross-sectional view of the shield plate (III-III in FIG. 4).
2 (b) is an enlarged view of a portion B in FIG. 2 (a).
【００２２】図２（ａ）（ｂ）に示すように、まず、円
錐台形状部品１ａの下端部１３の端面とドーナツ形状平
板部品１ｂの開口部の端面とを対向させて溶接開先６を
形成するとともに、溶接開先６の裏側にカーボン材料か
らなる裏当て材１２と、溶接開先６とともに溶融する厚
さ１ｍｍ以上の薄板銅板（金属板）１１とを配置する。
なお、図２（ｂ）に示すように、裏当て材１２の表面に
は図１（ｂ）に示すような溝部１０は形成されていな
い。As shown in FIGS. 2 (a) and 2 (b), first, the end face of the lower end portion 13 of the truncated conical part 1a and the end face of the opening of the donut-shaped flat part 1b are opposed to each other to form the welding groove 6. At the same time, a backing material 12 made of a carbon material and a thin copper plate (metal plate) 11 having a thickness of 1 mm or more that are melted together with the welding groove 6 are arranged on the back side of the welding groove 6.
As shown in FIG. 2B, the groove 10 as shown in FIG. 1B is not formed on the surface of the backing material 12.
【００２３】そしてこの状態で、溶接開先６の表側から
円錐台形状部品１ａとドーナツ形状平板部品１ｂとを大
電流ＭＩＧ溶接法により片面溶接する。このとき、溶接
開先６は大電流ＭＩＧ溶接により溶融して溶融金属が重
力に従って下方に流出するが、このようにして流出した
溶融金属は溶接開先６の裏側に配置されたカーボン材料
の裏当て材１２および薄板銅板１１により保持される。
なお、薄板銅板１１は、溶接前には溶接開先６と裏当て
材１２との間の間隔を保って図１（ｂ）に示すような溝
部１０に相当する間隙を形成する働きをし、溶接中には
溶接開先６の下方に位置する部分が溶融して溶接金属７
の一部となる。In this state, the frusto-conical part 1a and the donut-shaped flat part 1b are single-side welded from the front side of the welding groove 6 by a large current MIG welding method. At this time, the welding groove 6 is melted by the large current MIG welding, and the molten metal flows downward according to gravity. The molten metal flowing out in this manner is applied to the back of the carbon material disposed on the back side of the welding groove 6. It is held by the patch 12 and the thin copper plate 11.
In addition, the thin copper plate 11 has a function of forming a gap corresponding to the groove 10 as shown in FIG. 1B while maintaining a gap between the welding groove 6 and the backing material 12 before welding. During welding, a portion located below the welding groove 6 is melted and weld metal 7 is welded.
Become a part of.
【００２４】本発明の第２の実施の形態によれば、裏当
て材１２と溶接開先６との間に薄板銅板１１が配置され
ているので、上述した第１の実施の形態と同様に、凸状
の良好な裏波ビードを形成することができ、このため凹
状の裏波ビードの場合に多発する溶接欠陥を防止するこ
とができる。According to the second embodiment of the present invention, since the thin copper plate 11 is arranged between the backing material 12 and the welding groove 6, the same as in the above-described first embodiment. In this case, it is possible to form a good convex backside bead, so that welding defects that occur frequently in the case of a concave backside bead can be prevented.
【００２５】なお上述した第２の実施の形態において
は、薄板銅板１１と溶接開先６との間に隙間を設けてい
ないが、溶接開先６から所定間隔だけ離間して薄板銅板
１１を配置するようにしてもよい。In the above-described second embodiment, no gap is provided between the thin copper plate 11 and the welding groove 6, but the thin copper plate 11 is arranged at a predetermined distance from the welding groove 6. You may make it.
【００２６】[0026]
【発明の効果】以上説明したように本発明によれば、溶
接開先が円錐台形状部品の曲げ部から十分に離れた位置
にあり、余盛り溶接金属が曲げ部にかかることなく平坦
なフランジ部に位置するので、溶接金属表面を機械加工
により容易に仕上げ整形することができる。また、溶接
開先が円錐台形状部品の曲げ部から十分に離れた位置に
あるので、形状変化に起因する溶接欠陥が発生しにく
い。As described above, according to the present invention, the welding groove is located at a position sufficiently distant from the bent portion of the truncated cone-shaped part, and the flat welded metal is not welded to the bent portion. Since it is located at the portion, the weld metal surface can be easily finished and shaped by machining. Further, since the welding groove is located at a position sufficiently distant from the bent portion of the truncated cone-shaped part, welding defects due to the shape change are less likely to occur.
【００２７】また本発明によれば、溶接開先の裏側に耐
熱性に優れたカーボン材料からなる裏当て材が配置され
ているので、溶接開先から流出した多量の溶融金属を保
持することができ、このため大電流ＭＩＧ溶接法等によ
り溶け込み不足のない溶接条件で溶接を行うことができ
る。Further, according to the present invention, since the backing material made of a carbon material having excellent heat resistance is arranged on the back side of the welding groove, a large amount of molten metal flowing out of the welding groove can be held. For this reason, welding can be performed under a welding condition without insufficient penetration by a large current MIG welding method or the like.
【図１】本発明によるタービン発電機のシールド板およ
びその製造方法の第１の実施の形態を説明するための
図。FIG. 1 is a view for explaining a first embodiment of a shield plate of a turbine generator and a method of manufacturing the shield plate according to the present invention.
【図２】本発明によるタービン発電機のシールド板の製
造方法の第２の実施の形態を説明するための図。FIG. 2 is a view for explaining a second embodiment of the method for manufacturing the shield plate of the turbine generator according to the present invention.
【図３】タービン発電機の概略構成を示す部分断面図。FIG. 3 is a partial sectional view showing a schematic configuration of a turbine generator.
【図４】図３に示すタービン発電機のシールド板をIV方
向から見た部分正面図。FIG. 4 is a partial front view of the shield plate of the turbine generator shown in FIG. 3 as viewed from an IV direction.
【図５】従来のタービン発電機のシールド板およびその
製造方法を説明するための図。FIG. 5 is a view for explaining a conventional shield plate of a turbine generator and a method of manufacturing the shield plate.
１ シールド板 １ａ 円錐台形状部品 １ｂ ドーナツ形状平板部品 ２ コイル ２ａ コイルエンド部 ３ 鉄心 ４ 押え板 ５ ロータ ６ 溶接開先 ７ 溶接金属 ８，９，１２ 裏当て材 １０ 溝部 １１ 薄板銅板（金属板） １３ 下端部（一側端部） １５ 曲げＲ部（曲げ部） １６ フランジ部 DESCRIPTION OF SYMBOLS 1 Shield plate 1a Frusto-conical part 1b Donut shaped flat part 2 Coil 2a Coil end part 3 Iron core 4 Holding plate 5 Rotor 6 Welding groove 7 Weld metal 8, 9, 12 Backing material 10 Groove 11 Thin copper plate (metal plate) 13 Lower end (one side end) 15 Bend R (bend) 16 Flange
Claims (6)
の開口部を有するドーナツ形状平板部品とを備え、 前記円錐台形状部品の前記一側端部は曲げ部と、この曲
げ部から外方に延びるフランジ部とを有し、このフラン
ジ部の端面と前記ドーナツ形状平板部品の前記開口部の
端面とが溶接されていることを特徴とするタービン発電
機のシールド板。1. A frustoconical part having a hollow shape, and a donut-shaped flat part having a substantially circular opening in which one end of the frustoconical part is received, the one of the frustoconical parts being provided. The side end portion has a bent portion and a flange portion extending outward from the bent portion, and an end face of the flange portion and an end face of the opening of the donut-shaped flat plate part are welded. Turbine generator shield plate.
ナツ形状平板部品の板厚以上の距離だけ外方に延びてい
ることを特徴とする請求項１記載のタービン発電機のシ
ールド板。2. The shield plate for a turbine generator according to claim 1, wherein said flange portion extends outward from said bent portion by a distance equal to or greater than the plate thickness of said donut-shaped flat part.
とドーナツ形状平板部品の開口部の端面とを対向させて
溶接開先を形成する工程と、 前記溶接開先の裏側にカーボン材料からなる裏当て材を
配置する工程と、 前記溶接開先の表側から前記円錐台形状部品と前記ドー
ナツ形状平板部品とを片面溶接する工程とを含むことを
特徴とするタービン発電機のシールド板の製造方法。3. A step of forming a welding groove by making an end face of one side end of a hollow truncated conical part face an end face of an opening of a donut-shaped flat part, and forming a welding groove on the back side of the welding groove. A step of disposing a backing material made of a carbon material, and a step of performing one-side welding of the truncated cone-shaped part and the donut-shaped flat part from the front side of the welding groove, and a shield for a turbine generator, Plate manufacturing method.
には所定深さの溝部が形成されていることを特徴とする
請求項３記載のタービン発電機のシールド板の製造方
法。4. The method for manufacturing a shield plate for a turbine generator according to claim 3, wherein a groove having a predetermined depth is formed in a portion of said backing material corresponding to the welding line.
記溶接開先とともに溶融する所定厚さの金属板が挿入さ
れていることを特徴とする請求項３記載のタービン発電
機のシールド板の製造方法。5. The turbine generator according to claim 3, wherein a metal plate having a predetermined thickness that is melted together with the welding groove is inserted between the backing material and the welding groove. Manufacturing method of shield plate.
請求項５記載のタービン発電機のシールド板の製造方
法。6. The method for manufacturing a shield plate for a turbine generator according to claim 5, wherein said metal plate is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8457398A JPH11285190A (en) | 1998-03-30 | 1998-03-30 | Shielding plate of turbine generator and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8457398A JPH11285190A (en) | 1998-03-30 | 1998-03-30 | Shielding plate of turbine generator and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11285190A true JPH11285190A (en) | 1999-10-15 |
Family
ID=13834427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8457398A Pending JPH11285190A (en) | 1998-03-30 | 1998-03-30 | Shielding plate of turbine generator and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11285190A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100999847B1 (en) | 2003-05-23 | 2010-12-13 | 두산중공업 주식회사 | The shell joining method and the shell joining jig attached to the end of bucket at the end of steam turbine |
| JP2012251644A (en) * | 2011-06-06 | 2012-12-20 | Toshiba Corp | Generator foundation stand and magnetic shield thereof |
| CN114942580A (en) * | 2022-06-23 | 2022-08-26 | 深圳市芯科盈科技有限公司 | Energy storage formula protective structure of intelligence wrist-watch |
-
1998
- 1998-03-30 JP JP8457398A patent/JPH11285190A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100999847B1 (en) | 2003-05-23 | 2010-12-13 | 두산중공업 주식회사 | The shell joining method and the shell joining jig attached to the end of bucket at the end of steam turbine |
| JP2012251644A (en) * | 2011-06-06 | 2012-12-20 | Toshiba Corp | Generator foundation stand and magnetic shield thereof |
| CN114942580A (en) * | 2022-06-23 | 2022-08-26 | 深圳市芯科盈科技有限公司 | Energy storage formula protective structure of intelligence wrist-watch |
| CN114942580B (en) * | 2022-06-23 | 2024-05-24 | 深圳市芯科云科技有限公司 | Energy storage type protection structure of intelligent watch |
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