JP6773633B2

JP6773633B2 - Upper bearing structure, vertical rotary electric machine, and vertical rotary electric machine system

Info

Publication number: JP6773633B2
Application number: JP2017240876A
Authority: JP
Inventors: 横山　大輔; 大輔横山; 健児池永
Original assignee: Toshiba Mitsubishi Electric Industrial Systems Corp
Current assignee: Toshiba Mitsubishi Electric Industrial Systems Corp
Priority date: 2017-12-15
Filing date: 2017-12-15
Publication date: 2020-10-21
Anticipated expiration: 2037-12-15
Also published as: JP2019108909A

Description

本発明は、上部軸受構造体、立形回転電機、および立形回転電機システムに関する。 The present invention relates to an upper bearing structure, a vertical rotary electric machine, and a vertical rotary electric machine system.

回転軸を鉛直方向とする立形回転電機において、回転子等の回転部分は、上部軸受部と下部軸受部によって回転可能に支持されている。通常、上部軸受部は、回転電機の回転部分の自重を支持するスラスト軸受と、径方向の荷重を支持するすべり軸受けであるジャーナル軸受を有する。また、下部軸受部は、ジャーナル軸受を有する。 In a vertical rotary electric machine whose rotation axis is in the vertical direction, a rotating portion such as a rotor is rotatably supported by an upper bearing portion and a lower bearing portion. Usually, the upper bearing portion has a thrust bearing that supports the weight of the rotating portion of the rotary electric machine and a journal bearing that is a slide bearing that supports a load in the radial direction. Further, the lower bearing portion has a journal bearing.

上部軸受部において、特にスラスト軸受の摺動部は発熱量が大きいことから、通常、上部軸受は油槽内で潤滑油中に浸漬されている（特許文献１）。油槽内では、ロータシャフトに取り付けられたランナが回転する。運転中は、ランナが回転することによって、潤滑油が油槽中を循環する。スラスト軸受等で発生した熱は、潤滑油に移行し、油槽の表面において、外気との熱交換により熱が放散される。 In the upper bearing portion, particularly the sliding portion of the thrust bearing generates a large amount of heat, so that the upper bearing is usually immersed in lubricating oil in an oil tank (Patent Document 1). In the oil tank, the runner attached to the rotor shaft rotates. During operation, the rotating runner causes the lubricating oil to circulate in the oil tank. The heat generated in the thrust bearing or the like is transferred to the lubricating oil, and the heat is dissipated on the surface of the oil tank by heat exchange with the outside air.

特許第３６６３６５８号公報Japanese Patent No. 3663658

上部軸受部での発熱が大きくなると、油槽の外側表面からの放熱のみでは、容量的に限界が出てくる。このため、たとえば、油槽中に熱交換用の伝熱管を内蔵して、外部の冷却器との間で、冷却水などの冷却媒体を循環させる方法、油槽中から外気への熱移動のためのヒートパイプを設ける方法、油槽の外側面を強制冷却の熱交換器の伝熱面にする方法などが考えられる。 When the heat generated in the upper bearing portion becomes large, there is a limit in capacity only by heat dissipation from the outer surface of the oil tank. For this reason, for example, a method of incorporating a heat transfer tube for heat exchange in the oil tank and circulating a cooling medium such as cooling water with an external cooler, for heat transfer from the oil tank to the outside air. A method of providing a heat pipe, a method of using the outer surface of the oil tank as a heat transfer surface of a heat exchanger for forced cooling, and the like can be considered.

しかしながら、このように、立形回転電機の一部として、あるいは立形回転電機と一体に熱交換のための装置を設ける場合、構造が複雑化し、また、これらの追加装置の自重分、スラスト軸受への荷重を増大させ発熱量も増加するなど、問題が多い。また、冷却媒体に水を用いようとすると、国によっては、水の使用に制限が設けられている、あるいは、水質上の問題があるなど、実現が難しい場合がある。 However, when a device for heat exchange is provided as a part of the vertical rotary electric machine or integrally with the vertical rotary electric machine in this way, the structure becomes complicated, and the weight of these additional devices and the thrust bearing There are many problems such as increasing the load on the bearing and increasing the amount of heat generated. In addition, it may be difficult to use water as a cooling medium because some countries have restrictions on the use of water or there are problems with water quality.

したがって、システムを複雑化するようなことなく、潤滑油の冷却能力を向上する方法を提供することが望まれている。 Therefore, it is desired to provide a method for improving the cooling capacity of the lubricating oil without complicating the system.

そこで、本発明は、立形回転電機の上部軸受構造の冷却能力を、簡素化された構成によって向上させることを目的とする。 Therefore, an object of the present invention is to improve the cooling capacity of the upper bearing structure of a vertical rotary electric machine by a simplified configuration.

上述の目的を達成するため、本発明に係る上部軸受構造体は、軸が鉛直方向に延びるロータシャフトを有する立形回転電機の回転子を回転可能に支持し、軸方向の荷重を支持するスラスト軸受と、前記軸方向に垂直な方向の荷重を支持するジャーナル軸受と、前記スラスト軸受および前記ジャーナル軸受の潤滑および冷却のための潤滑油を収納する環状の静止固定された上部油槽と、前記ロータシャフトに取り付けられて前記スラスト軸受に前記軸方向の荷重を伝達するランナと、前記潤滑油を駆動する潤滑油ポンプと、を備える上部軸受構造体であって、前記上部油槽は、前記ロータシャフトと径方向の間隙をおいて配され上方に延びた円筒状の油槽径方向内側筒と、前記油槽径方向内側筒の径方向外側に配されて、上方に延びた筒状の油槽径方向外側筒と、前記油槽径方向内側筒の下端と前記油槽径方向外側筒の下端とを接続する平板状の油槽底板と、を有し、前記ランナは、前記ロータシャフトに取り付けられて径方向外側に拡がるランナ上部円板部と、前記ランナ上部円板部の下面に接続し、下方に延びるランナ円筒部と、を有し、前記潤滑油ポンプは、前記ランナ円筒部の径方向外側に取り付けられて潤滑油駆動要素を具備する潤滑油ポンプ回転部と、前記潤滑油ポンプ回転部の径方向外側に配されて、前記ロータシャフトが回転中に、前記潤滑油ポンプ回転部とともに前記潤滑油を駆動する潤滑油ポンプ静止部と、を有し、前記潤滑油ポンプ回転部は、前記ランナ円筒部に取り付けられて径方向外側に拡がる環状円板形状の上部環状板と、前記上部環状板によりそれぞれの上端を支持されて、前記潤滑油駆動要素として設けられ前記ランナ円筒部の径方向外側に周方向に互いに間隔をおいて配された複数の羽根と、前記上部環状板と同様の外径を有し前記上部環状板より径の大きな開口を有し、前記複数の羽根の下端と結合する下部環状板と、を具備し、前記潤滑油ポンプ静止部は、前記潤滑油ポンプ回転部の径方向外側に連通する静止部内部空間を形成する静止部容器と、前記静止部内部空間と前記油槽径方向外側筒の外側とを連通させる吐出管と、を具備する、ことを特徴とする。 In order to achieve the above object, the upper bearing structure according to the present invention is a thrust that rotatably supports a rotor of a vertical rotary electric machine having a rotor shaft whose shaft extends in the vertical direction and supports an axial load. A bearing, a journal bearing that supports a load in the direction perpendicular to the axial direction, an annular statically fixed upper oil tank that stores a lubricating oil for lubricating and cooling the thrust bearing and the journal bearing, and the rotor. An upper bearing structure including a runner attached to a shaft and transmitting a load in the axial direction to the thrust bearing and a lubricating oil pump for driving the lubricating oil, wherein the upper oil tank is the rotor shaft. A cylindrical oil tank radial inner cylinder arranged with a radial gap and extending upward, and a tubular oil tank radial outer cylinder arranged on the radial outer side of the oil tank radial inner cylinder and extending upward. And a flat plate-shaped oil tank bottom plate connecting the lower end of the oil tank radial inner cylinder and the lower end of the oil tank radial outer cylinder, and the runner is attached to the rotor shaft and expands radially outward. It has a runner upper disk portion and a runner cylindrical portion connected to the lower surface of the runner upper disk portion and extends downward, and the lubricating oil pump is attached to the radially outer side of the runner cylindrical portion for lubrication. Lubricating that drives the lubricating oil together with the lubricating oil pump rotating portion while the rotor shaft is rotating, which is arranged on the radial outer side of the lubricating oil pump rotating portion and the lubricating oil pump rotating portion including the oil driving element. an oil pump stationary part, was closed, the lubricating oil pump rotating portion includes an upper annular plate of annular circular plate shape extending radially outward is attached to the runner cylindrical portion, each of the upper end by the upper annular plate A plurality of blades that are supported and provided as the lubricating oil driving element and are arranged radially outward of the runner cylindrical portion at intervals in the circumferential direction, and have an outer diameter similar to that of the upper annular plate. A lower annular plate having an opening having a diameter larger than that of the upper annular plate and connecting to the lower ends of the plurality of blades is provided, and the lubricating oil pump stationary portion communicates radially outward of the lubricating oil pump rotating portion. It is characterized by including a stationary portion container that forms an internal space of the stationary portion, and a discharge pipe that communicates the internal space of the stationary portion with the outside of the oil tank radial outer cylinder .

また、本発明に係る立形回転電機は、本発明の上記の上部軸受構造体と、前記回転子と、前記回転子の回転子鉄心の径方向外側に配されて静止固定された円筒状の固定子鉄心と前記固定子鉄心の内周面に形成され鉛直方向に貫通し周方向に互いに間隔をおいて設けられた複数の固定子スロットを貫通する固定子巻線とを有する固定子と、前記ロータシャフトの下部の径方向荷重を支持する下部軸受部と、を備えることを特徴とする。 Further, the vertical rotary electric machine according to the present invention has a cylindrical shape in which the upper bearing structure of the present invention, the rotor, and the rotor core of the rotor are arranged and statically fixed to the outside in the radial direction. A stator having a stator core and a stator winding formed on the inner peripheral surface of the stator core and penetrating in the vertical direction and penetrating a plurality of stator slots provided at intervals in the circumferential direction. It is characterized by including a lower bearing portion that supports a radial load on the lower portion of the rotor shaft.

また、本発明に係る立形回転電機システムは、本発明の上記の立形回転電機と、前記潤滑油を冷却する冷却器と、前記立形回転電機から前記冷却器までの前記潤滑油の通路となる冷却器入口配管と、前記冷却器から前記立形回転電機までの前記潤滑油の通路となる冷却器出口配管と、を備えることを特徴とする。 Further, the vertical rotary electric machine system according to the present invention includes the vertical rotary electric machine of the present invention, a cooler for cooling the lubricating oil, and a passage of the lubricating oil from the vertical rotary electric machine to the cooler. A cooler inlet pipe and a cooler outlet pipe serving as a passage for the lubricating oil from the cooler to the vertical rotary electric machine are provided.

本発明によれば、立形回転電機の上部軸受構造の冷却能力を、簡素化された構成によって向上させることができる。 According to the present invention, the cooling capacity of the upper bearing structure of a vertical rotary electric machine can be improved by a simplified configuration.

第１の実施形態に係る立形回転電機システムの構成を示す立断面図である。It is a vertical sectional view which shows the structure of the vertical rotary electric machine system which concerns on 1st Embodiment. 第１の実施形態に係る上部軸受構造体の構成を示す立断面図である。It is a vertical sectional view which shows the structure of the upper bearing structure which concerns on 1st Embodiment. 第１の実施形態に係る上部軸受構造体の構成を示す図２のＩＩＩ−ＩＩＩ線矢視断面図である。FIG. 2 is a cross-sectional view taken along the line III-III of FIG. 2 showing the configuration of the upper bearing structure according to the first embodiment. 第１の実施形態に係る上部軸受構造体における潤滑油ポンプの潤滑油ポンプ回転部の構成を示す斜視図である。It is a perspective view which shows the structure of the lubricating oil pump rotating part of the lubricating oil pump in the upper bearing structure which concerns on 1st Embodiment. 第１の実施形態に係る上部軸受構造体の構成を示す図２のＶ−Ｖ線矢視断面図である。FIG. 2 is a cross-sectional view taken along the line VV of FIG. 2 showing a configuration of an upper bearing structure according to the first embodiment. 第１の実施形態に係る上部軸受構造体における潤滑油ポンプの潤滑油ポンプ静止部の構成を示す斜視図である。It is a perspective view which shows the structure of the lubricating oil pump rest part of the lubricating oil pump in the upper bearing structure which concerns on 1st Embodiment. 第２の実施形態に係る上部軸受構造体の構成を示す立断面図である。It is a vertical sectional view which shows the structure of the upper bearing structure which concerns on 2nd Embodiment. 第２の実施形態に係る上部軸受構造体における潤滑油ポンプの詳細を示す立断面図である。It is a vertical sectional view which shows the detail of the lubricating oil pump in the upper bearing structure which concerns on 2nd Embodiment. 第２の実施形態に係る上部軸受構造体における潤滑油ポンプの第１の変形例を示す部分立断面図である。It is a partial vertical sectional view which shows the 1st modification of the lubricating oil pump in the upper bearing structure which concerns on 2nd Embodiment. 第２の実施形態に係る上部軸受構造体における潤滑油ポンプの第２の変形例を示す部分立断面図である。It is a partial vertical sectional view which shows the 2nd modification of the lubricating oil pump in the upper bearing structure which concerns on 2nd Embodiment.

以下、図面を参照して、本発明の実施形態に係る上部軸受構造体、立形回転電機、および立形回転電機システムについて説明する。ここで、互いに同一または類似の部分には、共通の符号を付して、重複説明は省略する。 Hereinafter, the upper bearing structure, the vertical rotary electric machine, and the vertical rotary electric machine system according to the embodiment of the present invention will be described with reference to the drawings. Here, common reference numerals are given to parts that are the same as or similar to each other, and duplicate description will be omitted.

［第１の実施形態］
図１は、第１の実施形態に係る立形回転電機システムの構成を示す立断面図である。 [First Embodiment]
FIG. 1 is a vertical sectional view showing a configuration of a vertical rotary electric machine system according to a first embodiment.

立形回転電機システム６００は、上部軸受構造体１００を有する立形回転電機５００と、冷却器４１０と、立形回転電機５００から冷却器４１０までの冷却のための潤滑油１０８（図２）の通路となる冷却器入口配管４２０と、冷却器４１０から立形回転電機５００までの冷却された潤滑油１０８の通路となる冷却器出口配管４３０とを備える。 The vertical rotary electric machine system 600 includes a vertical rotary electric machine 500 having an upper bearing structure 100, a cooler 410, and a lubricating oil 108 (FIG. 2) for cooling from the vertical rotary electric machine 500 to the cooler 410. A cooler inlet pipe 420 serving as a passage and a cooler outlet pipe 430 serving as a passage for the cooled lubricating oil 108 from the cooler 410 to the vertical rotary electric machine 500 are provided.

ここで、冷却器４１０は、潤滑油１０８を冷却媒体で冷却するもので、たとえば、潤滑油１０８と外気の間で熱交換するラジエータや、潤滑油１０８と水との熱交換器と水の冷却のためのたとえば冷却塔とを組み合わせたものなど、通常の冷却装置を用いることができる。 Here, the cooler 410 cools the lubricating oil 108 with a cooling medium, for example, a radiator that exchanges heat between the lubricating oil 108 and the outside air, a heat exchanger between the lubricating oil 108 and water, and cooling of water. Ordinary cooling devices can be used, for example in combination with a cooling tower.

冷却器入口配管４２０の冷却器４１０との接続端と反対側の端部には、立形回転電機５００側との接続のための油槽出口フランジ４２１が設けられている。また、冷却器入口配管４２０には冷却器入口弁４２２が設けられている。 An oil tank outlet flange 421 for connecting to the vertical rotary electric machine 500 side is provided at an end of the cooler inlet pipe 420 opposite to the connection end with the cooler 410. Further, the cooler inlet pipe 420 is provided with a cooler inlet valve 422.

冷却器出口配管４３０の冷却器４１０との接続端と反対側の端部には、立形回転電機５００側との接続のための油槽入口フランジ４３１が設けられている。また、冷却器出口配管４３０には冷却器出口弁４３２が設けられている。 An oil tank inlet flange 431 for connecting to the vertical rotary electric machine 500 side is provided at an end of the cooler outlet pipe 430 opposite to the connection end with the cooler 410. Further, the cooler outlet pipe 430 is provided with a cooler outlet valve 432.

冷却器入口弁４２２および冷却器出口弁４３２は、冷却器４１０のメンテナンス等の際に閉止するためのものである。なお、図１には図示していないが、上部軸受構造体１００側にも、上部軸受構造体１００のメンテナンス時の隔離のために、同様の止め弁を設けてもよい。 The cooler inlet valve 422 and the cooler outlet valve 432 are for closing the cooler 410 during maintenance or the like. Although not shown in FIG. 1, a similar stop valve may be provided on the upper bearing structure 100 side for isolation during maintenance of the upper bearing structure 100.

立形回転電機５００は、回転子１０、固定子２０、フレーム５０、下部軸受部４０、および上部軸受構造体１００を有する。 The vertical rotary electric machine 500 includes a rotor 10, a stator 20, a frame 50, a lower bearing portion 40, and an upper bearing structure 100.

回転子１０は、回転軸（以下、軸という）が鉛直方向に延びたロータシャフト１１と、ロータシャフト１１の径方向外側に取り付けられた回転子鉄心１２を有する。 The rotor 10 has a rotor shaft 11 having a rotating shaft (hereinafter referred to as a shaft) extending in the vertical direction, and a rotor core 12 attached to the radial outer side of the rotor shaft 11.

固定子２０は、回転子鉄心１２の径方向外側に間隙を介して配されて静止固定された円筒状の固定子鉄心２１と、固定子鉄心２１の内周面に形成され鉛直方向に貫通し周方向に互いに間隔をおいて設けられた複数の固定子スロット（図示せず）を貫通する固定子巻線２２とを有する。 The stator 20 is formed on the inner peripheral surface of the stator core 21 and the cylindrical stator core 21 which is arranged and fixed statically on the outer side in the radial direction of the rotor core 12 and penetrates in the vertical direction. It has a stator winding 22 that penetrates a plurality of stator slots (not shown) provided at intervals in the circumferential direction.

フレーム５０は、回転子鉄心１２および固定子２０を収納する。フレーム５０は上下に延びたフレーム筒部５０ａと、フレーム筒部５０ａの下端に接続し中央にロータシャフト１１が貫通する開口が形成された平板上のフレーム底板５０ｂと、フレーム筒部５０ａの上端に接続し中央に開口が形成されたフレーム上板５０ｃとを有する。 The frame 50 houses the rotor core 12 and the stator 20. The frame 50 is formed at the frame cylinder portion 50a extending vertically, the frame bottom plate 50b on a flat plate connected to the lower end of the frame cylinder portion 50a and having an opening through which the rotor shaft 11 penetrates in the center, and the upper end of the frame cylinder portion 50a. It has a frame top plate 50c that is connected and has an opening formed in the center.

下部軸受部４０は、上部軸受構造体１００とともに、回転子１０を回転可能に支持している。下部軸受部４０は、軸方向に垂直な方向、すなわち径方向の荷重を支持する。下部軸受部４０は、フレーム底板５０ｂとともに潤滑油１０８を貯留する下部油槽４１と、下部油槽４１中にあってロータシャフト１１の下部の径方向荷重を支持するジャーナル軸受４２とを有する。 The lower bearing portion 40 rotatably supports the rotor 10 together with the upper bearing structure 100. The lower bearing portion 40 supports a load in the direction perpendicular to the axial direction, that is, in the radial direction. The lower bearing portion 40 has a lower oil tank 41 for storing the lubricating oil 108 together with the frame bottom plate 50b, and a journal bearing 42 in the lower oil tank 41 for supporting the radial load of the lower portion of the rotor shaft 11.

図２は、第１の実施形態に係る上部軸受構造体の構成を示す立断面図である。 FIG. 2 is a vertical cross-sectional view showing the configuration of the upper bearing structure according to the first embodiment.

上部軸受構造体１００は、ランナ１１０、上部油槽１０５、スラスト軸受１３０、ジャーナル軸受１４０、および潤滑油ポンプ２００を有する。 The upper bearing structure 100 includes a runner 110, an upper oil tank 105, a thrust bearing 130, a journal bearing 140, and a lubricating oil pump 200.

ランナ１１０は、ロータシャフト１１に取り付けられて、ロータシャフト１１からの荷重をスラスト軸受１３０に伝達する機能と、上部油槽１０５内の潤滑油１０８を撹拌する機能を有する。ランナ１１０は、ロータシャフト１１に取り付けられて径方向外側に拡がる環状円板のランナ上部円板部１１１と、ランナ上部円板部１１１の外縁に接続し下方に延びた円筒状のランナ円筒部１１２とを有し、ランナ上部円板部１１１とランナ円筒部１１２は一体に形成されている。ランナ円筒部１１２は、軸方向に下部のランナ下部円筒部１１２ｂと上部のランナ上部円筒部１１２ａとを有する。ランナ下部円筒部１１２ｂの外径および内径は、ランナ上部円筒部１１２ａの外径および内径に比べて、それぞれ大きくなっている。 The runner 110 is attached to the rotor shaft 11 and has a function of transmitting the load from the rotor shaft 11 to the thrust bearing 130 and a function of stirring the lubricating oil 108 in the upper oil tank 105. The runner 110 includes a runner upper disk portion 111 of an annular disk attached to the rotor shaft 11 and extending outward in the radial direction, and a cylindrical runner cylindrical portion 112 connected to the outer edge of the runner upper disk portion 111 and extending downward. The runner upper disk portion 111 and the runner cylindrical portion 112 are integrally formed. The runner cylindrical portion 112 has a lower runner lower cylindrical portion 112b and an upper runner upper cylindrical portion 112a in the axial direction. The outer diameter and inner diameter of the runner lower cylindrical portion 112b are larger than the outer diameter and inner diameter of the runner upper cylindrical portion 112a, respectively.

ランナ１１０のランナ上部円筒部１１２ａには、径方向に貫通し、ランナ円筒部１１２の径方向内側と外側の上部油槽１０５内とを連通する少なくとも一つの連通孔１１４が形成されている。連通孔１１４は、潤滑油ポンプ２００より上方に形成されている。なお、連通孔１１４は、潤滑油ポンプ２００の後述する潤滑油ポンプ回転部２１０に連通していてもよい。 The runner upper cylindrical portion 112a of the runner 110 is formed with at least one communication hole 114 that penetrates in the radial direction and communicates with the inside of the upper oil tank 105 in the radial direction of the runner cylindrical portion 112 and the outer side. The communication hole 114 is formed above the lubricating oil pump 200. The communication hole 114 may communicate with the lubricating oil pump rotating portion 210 described later of the lubricating oil pump 200.

上部油槽１０５は、上部油槽１０５の径方向外側を構成する油槽径方向外側筒１０５ａ、径方向内側を構成する油槽径方向内側筒１０５ｂ、底部を構成する油槽底板１０５ｃ、および上部カバー蓋１０５ｄを有する。 The upper oil tank 105 has an oil tank radial outer cylinder 105a forming the radial outer side of the upper oil tank 105, an oil tank radial inner cylinder 105b forming the radial inner side, an oil tank bottom plate 105c forming the bottom, and an upper cover lid 105d. ..

油槽底板１０５ｃは、中央にロータシャフト１１が貫通する開口が形成された平板であり、フレーム５０のフレーム上板５０ｃに形成された開口を塞ぐようにフレーム上板５０ｃ上に取り付けられている。 The oil tank bottom plate 105c is a flat plate having an opening through which the rotor shaft 11 penetrates in the center, and is mounted on the frame upper plate 50c so as to close the opening formed in the frame upper plate 50c of the frame 50.

油槽径方向内側筒１０５ｂは、油槽底板１０５ｃの開口の縁部近傍に接続し、ロータシャフト１１の径方向外側で、かつ、ランナ円筒部１１２の径方向内側に挟まれた環状の空間内を、上方に、ランナ上部円板部１１１の下面近傍にまで延びている。 The oil tank radial inner cylinder 105b is connected to the vicinity of the edge of the opening of the oil tank bottom plate 105c, and is inside an annular space sandwiched by the radial outside of the rotor shaft 11 and the radial inside of the runner cylindrical portion 112. It extends upward to the vicinity of the lower surface of the runner upper disk portion 111.

油槽径方向外側筒１０５ａは、下端が油槽底板１０５ｃと接続し、上方に筒状に延びている。側部には、戻り管１０５ｈの第１の端部が接続されており、戻り管１０５ｈの端部は上部油槽１０５内に開放している。戻り管１０５ｈの第２の端部には、冷却器出口配管４３０の油槽入口フランジ４３１と接続するフランジが設けられている。 The lower end of the oil tank radial outer cylinder 105a is connected to the oil tank bottom plate 105c and extends upward in a tubular shape. The first end of the return pipe 105h is connected to the side portion, and the end of the return pipe 105h is open to the inside of the upper oil tank 105. At the second end of the return pipe 105h, a flange for connecting to the oil tank inlet flange 431 of the cooler outlet pipe 430 is provided.

図３は、第１の実施形態に係る上部軸受構造体の構成を示す図２のＩＩＩ−ＩＩＩ線矢視断面図である。図２において、ランナ１１０のランナ円筒部１１２の下端と、スラスト軸受１３０との接触面で切断した断面図である。 FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2 showing the configuration of the upper bearing structure according to the first embodiment. FIG. 2 is a cross-sectional view taken along the contact surface between the lower end of the runner cylindrical portion 112 of the runner 110 and the thrust bearing 130.

スラスト軸受１３０は、複数の台板１３１、中央に開口を有する円板状のパッド支持部材１３２、および複数のスラストパッド１３３を有する。 The thrust bearing 130 has a plurality of base plates 131, a disc-shaped pad support member 132 having an opening in the center, and a plurality of thrust pads 133.

複数の台板１３１は、それぞれ、径方向に延びたほぼ直方体形状である。複数の台板１３１は油槽底板１０５ｃ上に、周方向に互いに間隔をあけて、放射状に取り付けられている。それぞれの台板１３１の径方向内側面１３１ａ（図２）と、油槽径方向内側筒１０５ｂの径方向外側面間には、間隙が形成されている。 Each of the plurality of base plates 131 has a substantially rectangular parallelepiped shape extending in the radial direction. The plurality of base plates 131 are radially mounted on the oil tank bottom plate 105c at intervals in the circumferential direction. A gap is formed between the radial inner surface 131a (FIG. 2) of each base plate 131 and the radial outer surface of the oil tank radial inner cylinder 105b.

パッド支持部材１３２は、ロータシャフト１１の軸芯に中心を有するように配された、中央に円形の開口を有する環状円板である。パッド支持部材１３２は、複数の台板１３１の全体の上に搭載されている。 The pad support member 132 is an annular disk having a circular opening in the center, which is arranged so as to have a center on the axis of the rotor shaft 11. The pad support member 132 is mounted on the entire plurality of base plates 131.

パッド支持部材１３２に形成された開口の内側面１３２ａと、油槽径方向内側筒１０５ｂの外表面との間にはギャップ１３２ｂが形成され、軸方向の環状流路を形成する。 A gap 132b is formed between the inner side surface 132a of the opening formed in the pad support member 132 and the outer surface of the inner cylinder 105b in the radial direction of the oil tank to form an annular flow path in the axial direction.

なお、台板１３１およびパッド支持部材１３２は、このような形状には限定されない。たとえば、台板１３１およびパッド支持部材１３２を合わせて１つの環状の支持台とし、径方向中心に向かう貫通孔を円周方向に配列したものでもよい。 The base plate 131 and the pad support member 132 are not limited to such a shape. For example, the base plate 131 and the pad support member 132 may be combined to form one annular support base, and through holes toward the center in the radial direction may be arranged in the circumferential direction.

以上のような台板１３１およびパッド支持部材１３２の構成により、互いに隣接する台板１３１間には、パッド支持部材１３２と油槽底板１０５ｃ（図２）とに上下を挟まれて、径方向外側から径方向内側に向かう流路１３１ｆが、それぞれ形成される。この流路は、パッド支持部材１３２と油槽径方向内側筒１０５ｂ間に形成され上方への環状流路となるギャップ１３２ｂに連通している。また、さらには、ランナ円筒部１１２に形成された連通孔１１４にも連通し、上部油槽１０５内での循環流路を形成する。 Due to the configuration of the base plate 131 and the pad support member 132 as described above, the pad support member 132 and the oil tank bottom plate 105c (FIG. 2) are sandwiched between the base plates 131 adjacent to each other from the outside in the radial direction. The flow paths 131f that go inward in the radial direction are formed respectively. This flow path communicates with a gap 132b formed between the pad support member 132 and the inner cylinder 105b in the radial direction of the oil tank to form an upward annular flow path. Further, it communicates with the communication hole 114 formed in the runner cylindrical portion 112 to form a circulation flow path in the upper oil tank 105.

複数のスラストパッド１３３は、パッド支持部材１３２上に、放射状に互いに周方向に間隔をあけて搭載されている。それぞれのスラストパッド１３３は、上面は平面であり、径方向および周方向のいずれにも移動しないように拘束されている。それぞれのスラストパッド１３３の下面のほぼ中央には径方向に延びた突起１３３ａが形成されている。また、スラストパッド１３３の突起１３３ａに対応するパッド支持部材１３２上の位置には、突起１３３ａに対応する溝（図示しない）が形成されている。この結果、それぞれのスラストパッド１３３は、突起１３３ａを支点に、周方向に傾くことができる。 The plurality of thrust pads 133 are mounted on the pad support member 132 at intervals in the circumferential direction radially. The upper surface of each thrust pad 133 is flat, and each thrust pad 133 is restrained so as not to move in either the radial direction or the circumferential direction. A protrusion 133a extending in the radial direction is formed substantially in the center of the lower surface of each thrust pad 133. Further, a groove (not shown) corresponding to the protrusion 133a is formed at a position on the pad support member 132 corresponding to the protrusion 133a of the thrust pad 133. As a result, each thrust pad 133 can be tilted in the circumferential direction with the protrusion 133a as a fulcrum.

複数のスラストパッド１３３の全体の上に、ランナ下部円筒部１１２ｂの下端が接触するようにランナ１１０が搭載されている。スラストパッド１３３とランナ１１０との間は、互いにスライド可能である。スラストパッド１３３には、ランナ１１０を介して、回転子１０の自重分のスラスト荷重が付加される。 The runner 110 is mounted on the entire plurality of thrust pads 133 so that the lower ends of the runner lower cylindrical portion 112b come into contact with each other. The thrust pad 133 and the runner 110 are slidable with each other. A thrust load corresponding to the weight of the rotor 10 is applied to the thrust pad 133 via the runner 110.

スラストパッド１３３の上でランナ下部円筒部１１２ｂの下端が周方向に移動すると、スラストパッド１３３は、前述のように周方向に向かって水平方向に対して傾くことから、ランナ下部円筒部１１２ｂの下端面と、スラストパッド１３３の上面との間の隙間に潤滑油１０８が導かれることになる。 When the lower end of the runner lower cylindrical portion 112b moves in the circumferential direction on the thrust pad 133, the thrust pad 133 tilts in the horizontal direction toward the circumferential direction as described above, so that it is below the runner lower cylindrical portion 112b. Lubricating oil 108 is guided to the gap between the end surface and the upper surface of the thrust pad 133.

パッド支持部材１３２上にはジャーナル軸受１４０（図２）が取り付けられている。ジャーナル軸受１４０は、ランナ１１０の径方向外側に配される中央に開口を有するジャーナル軸受円板部１４１およびジャーナル軸受円板部１４１の外縁に接続して下方に延びるジャーナル軸受円筒部１４２を有する。ジャーナル軸受円板部１４１およびジャーナル軸受円筒部１４２は一体に形成されている。ジャーナル軸受円板部１４１の開口部分は、ランナ円筒部１１２と接触し、ランナ円筒部１１２からの径方向の荷重を受けながら、ランナ円筒部１１２を回転可能に支持する。ジャーナル軸受円筒部１４２の下端は、パッド支持部材１３２と結合している。ジャーナル軸受円筒部１４２には、径方向外側に貫通する少なくとも一つの連通孔１４２ａが形成されている。 A journal bearing 140 (FIG. 2) is mounted on the pad support member 132. The journal bearing 140 has a journal bearing disc portion 141 having a central opening arranged on the radial outer side of the runner 110 and a journal bearing cylindrical portion 142 connected to the outer edge of the journal bearing disc portion 141 and extending downward. The journal bearing disk portion 141 and the journal bearing cylindrical portion 142 are integrally formed. The opening portion of the journal bearing disk portion 141 contacts the runner cylindrical portion 112 and rotatably supports the runner cylindrical portion 112 while receiving a radial load from the runner cylindrical portion 112. The lower end of the journal bearing cylindrical portion 142 is coupled to the pad support member 132. The journal bearing cylindrical portion 142 is formed with at least one communication hole 142a penetrating outward in the radial direction.

潤滑油ポンプ２００（図２）は、潤滑油ポンプ回転部２１０と、潤滑油ポンプ回転部２１０の径方向の外側に配された潤滑油ポンプ静止部２２０とを有する。潤滑油ポンプ回転部２１０と潤滑油ポンプ静止部２２０とは互いに機械的に分離されている。潤滑油ポンプ静止部２２０は、上部油槽１０５をリークタイトに貫通して外部に連通する吐出管２２４を有する。吐出管２２４の外側の端部には、冷却器入口配管４２０の端部に設けられた油槽出口フランジ４２１と接続するためのフランジ２２４ｆが設けられている。 The lubricating oil pump 200 (FIG. 2) has a lubricating oil pump rotating portion 210 and a lubricating oil pump stationary portion 220 arranged on the outer side in the radial direction of the lubricating oil pump rotating portion 210. The lubricating oil pump rotating portion 210 and the lubricating oil pump stationary portion 220 are mechanically separated from each other. The lubricating oil pump stationary portion 220 has a discharge pipe 224 that leak tightly penetrates the upper oil tank 105 and communicates with the outside. At the outer end of the discharge pipe 224, a flange 224f for connecting to the oil tank outlet flange 421 provided at the end of the cooler inlet pipe 420 is provided.

図４は、第１の実施形態に係る上部軸受構造体における潤滑油ポンプの潤滑油ポンプ回転部の構成を示す斜視図である。また、図５は、第１の実施形態に係る上部軸受構造体の構成を示す図２のＶ−Ｖ線矢視断面図である。 FIG. 4 is a perspective view showing a configuration of a lubricating oil pump rotating portion of the lubricating oil pump in the upper bearing structure according to the first embodiment. Further, FIG. 5 is a cross-sectional view taken along the line VV of FIG. 2 showing the configuration of the upper bearing structure according to the first embodiment.

潤滑油ポンプ回転部２１０は、円環状の外形を有し、ランナ１１０のランナ下部円筒部１１２ｂの径方向外側表面に取り付けられている。なお、取り付け場所は、ランナ上部円筒部１１２ａの径方向外側表面でもよい。すなわち、潤滑油ポンプ回転部２１０は、ランナ円筒部１１２の径方向外側表面に取り付けられている。潤滑油ポンプ回転部２１０は、潤滑油駆動要素としての羽根２１１、上部環状板２１３および下部環状板２１２を有する。 The lubricating oil pump rotating portion 210 has an annular outer shape and is attached to the radial outer surface of the runner lower cylindrical portion 112b of the runner 110. The mounting location may be the radial outer surface of the runner upper cylindrical portion 112a. That is, the lubricating oil pump rotating portion 210 is attached to the radial outer surface of the runner cylindrical portion 112. The lubricating oil pump rotating portion 210 has blades 211 as lubricating oil driving elements, an upper annular plate 213, and a lower annular plate 212.

上部環状板２１３は、ランナ円筒部１１２に取り付けられて、複数の羽根２１１を上方から支持している。 The upper annular plate 213 is attached to the runner cylindrical portion 112 and supports a plurality of blades 211 from above.

複数の羽根２１１は、互いに周方向に間隔をおいて配されている。複数の羽根２１１のそれぞれは、周方向および径方向外側に延びている。 The plurality of blades 211 are arranged at intervals in the circumferential direction. Each of the plurality of blades 211 extends outward in the circumferential direction and the radial direction.

下部環状板２１２は、上部環状板２１３と同様の外径を有し、上部環状板２１３より径の大きな回転部入口開口２１２ａを有し、ランナ円筒部１１２とともに潤滑油ポンプ入口開口２１４を形成する。下部環状板２１２は、複数の羽根２１１の下端と結合している。 The lower annular plate 212 has an outer diameter similar to that of the upper annular plate 213, has a rotating portion inlet opening 212a having a diameter larger than that of the upper annular plate 213, and forms a lubricating oil pump inlet opening 214 together with the runner cylindrical portion 112. .. The lower annular plate 212 is coupled to the lower ends of the plurality of blades 211.

したがって、複数の羽根２１１は、上下に上部環状板２１３および下部環状板２１２に挟まれている。羽根２１１の径方向外側は、潤滑油ポンプ静止部２２０の静止部内部空間２２５に向かって開放している。 Therefore, the plurality of blades 211 are vertically sandwiched between the upper annular plate 213 and the lower annular plate 212. The radial outer side of the blade 211 is open toward the stationary portion internal space 225 of the lubricating oil pump stationary portion 220.

以上のような構成により、潤滑油ポンプ２００の潤滑油ポンプ回転部２１０には、潤滑油ポンプ入口開口２１４から流入して、複数の羽根２１１間を流れ、径方向外側に流出する流路が形成されている。 With the above configuration, the lubricating oil pump rotating portion 210 of the lubricating oil pump 200 is formed with a flow path that flows in from the lubricating oil pump inlet opening 214, flows between the plurality of blades 211, and flows out radially outward. Has been done.

図６は、第１の実施形態に係る上部軸受構造体における潤滑油ポンプの潤滑油ポンプ静止部の構成を示す斜視図である。潤滑油ポンプ２００の潤滑油ポンプ静止部２２０は、静止部容器２２０ａおよび前述の吐出管２２４を有する。 FIG. 6 is a perspective view showing a configuration of a lubricating oil pump stationary portion of the lubricating oil pump in the upper bearing structure according to the first embodiment. The lubricating oil pump stationary portion 220 of the lubricating oil pump 200 has a stationary portion container 220a and the above-mentioned discharge pipe 224.

静止部容器２２０ａは、上部環状板２２１、下部環状板２２２、および静止部円筒部材２２３を有する。 The stationary portion container 220a has an upper annular plate 221, the lower annular plate 222 and the stationary portion cylindrical member 223.

上部環状板２２１と下部環状板２２２は、同形状、同寸法であり、互いに同心で上下に対向している。両者の外縁部は、静止部円筒部材２２３により結合されている。すなわち、潤滑油ポンプ静止部２２０は、径方向内側が開放され、静止部内部空間２２５を形成する環状の箱型である。なお、図６で示す潤滑油ポンプ静止部２２０は、静止部内部空間２２５の断面が、矩形形状であるが、これに限定されない。たとえば、円形あるいは楕円形、あるいは、四角形以外の多角形でもよい。 Upper annular plate 221 and the lower annular plate 222, the same shape, have the same dimensions and faces concentrically one above the other. The outer edges of both are connected by a stationary cylindrical member 223. That is, the lubricating oil pump stationary portion 220 is an annular box shape in which the inside in the radial direction is opened to form an internal space 225 of the stationary portion. In the lubricating oil pump stationary portion 220 shown in FIG. 6, the cross section of the stationary portion internal space 225 has a rectangular shape, but the present invention is not limited to this. For example, it may be a circle, an ellipse, or a polygon other than a quadrangle.

なお、図示しないが、静止部内部空間２２５の径方向入口、すなわち、潤滑油ポンプ回転部２１０の径方向出口に対向して、径方向外側から囲むように、周方向に互いに間隔をおいて複数の案内羽根を設けてもよい。案内羽根を設けることにより、静止部内部空間２２５内での潤滑油１０８の流れの乱れによる圧力損失の発生を低減し、駆動効率の低下を抑制することができる。 Although not shown, a plurality of units are spaced apart from each other in the circumferential direction so as to face the radial inlet of the stationary portion internal space 225, that is, the radial outlet of the lubricating oil pump rotating portion 210 and surround the stationary portion from the outside in the radial direction. Guide blades may be provided. By providing the guide blades, it is possible to reduce the occurrence of pressure loss due to the turbulence of the flow of the lubricating oil 108 in the stationary portion internal space 225 and suppress the decrease in driving efficiency.

以下に、以上のように構成された本実施形態に係る上部軸受構造体１００を中心に立形回転電機システム６００のロータシャフト１１の回転中における作用について説明する。 The operation of the rotor shaft 11 of the vertical rotary electric system 600 during rotation will be described below with the upper bearing structure 100 according to the present embodiment configured as described above as the center.

ロータシャフト１１の回転に伴い、ランナ１１０およびこれに取り付けられた潤滑油ポンプ回転部２１０が回転する。 As the rotor shaft 11 rotates, the runner 110 and the lubricating oil pump rotating portion 210 attached to the runner 110 rotate.

ランナ１１０が回転すると、油槽径方向内側筒１０５ｂとランナ円筒部１１２との間の環状空間内の潤滑油１０８が連れ回りすることにより、この部分の潤滑油１０８に遠心力がかかる。この結果、環状空間内の潤滑油１０８は、ランナ円筒部１１２に形成された連通孔１１４を介して、ランナ円筒部１１２の径方向の外側に流出する。 When the runner 110 rotates, the lubricating oil 108 in the annular space between the oil tank radial inner cylinder 105b and the runner cylindrical portion 112 rotates around, so that centrifugal force is applied to the lubricating oil 108 in this portion. As a result, the lubricating oil 108 in the annular space flows out of the runner cylindrical portion 112 in the radial direction through the communication hole 114 formed in the runner cylindrical portion 112.

また、ランナ１１０が回転することにより、ランナ下部円筒部１１２ｂの下端面の回転につれて潤滑油１０８が連れ回りすることにより、この部分の潤滑油に遠心力がかかる。この結果、パッド支持部材１３２と下部円筒部１１２ｂの下端面に挟まれた領域、すなわち、スラストパッド１３３が配されている空間内の潤滑油１０８は、ジャーナル軸受円筒部１４２に形成されている連通孔１４２ａを介して径方向の外側に流出する。 Further, as the runner 110 rotates, the lubricating oil 108 rotates as the lower end surface of the lower end surface of the runner lower cylindrical portion 112b rotates, so that centrifugal force is applied to the lubricating oil in this portion. As a result, the region sandwiched between the pad support member 132 and the lower end surface of the lower cylindrical portion 112b, that is, the lubricating oil 108 in the space where the thrust pad 133 is arranged, communicates with the journal bearing cylindrical portion 142. It flows out in the radial direction through the hole 142a.

これにつられて、ランナ１１０およびスラスト軸受１３０の内側の領域内の潤滑油１０８のインベントリのうち外側に流出した分を補償するように、上部油槽１０５内の外側部分から潤滑油１０８がランナ１１０の内側に流入する。すなわち、上部油槽１０５内のランナ１１０より外側の潤滑油１０８は、複数の台板１３１とパッド支持部材１３２により形成された複数の流路１３１ｆ内を径方向外側から径方向内側に流れ、油槽径方向内側筒１０５ｂとパッド支持部材１３２間のギャップ１３２ｂ部分の環状流路を通ってパッド支持部材１３２の上方に流出する。 As a result, the lubricating oil 108 from the outer portion of the upper oil tank 105 of the runner 110 is compensated for the outflow of the inventory of the lubricating oil 108 in the inner region of the runner 110 and the thrust bearing 130. It flows inward. That is, the lubricating oil 108 outside the runner 110 in the upper oil tank 105 flows from the radial outside to the radial inside in the plurality of flow paths 131f formed by the plurality of base plates 131 and the pad support member 132, and the oil tank diameter. It flows out above the pad support member 132 through the annular flow path of the gap 132b portion between the directional inner cylinder 105b and the pad support member 132.

パッド支持部材１３２の上方に流出した潤滑油１０８は、複数のスラストパッド１３３とこれと接触しながらスライドするランナ下部円筒部１１２ｂとの接触面を保護し、かつ、発生する熱を除去する。また、潤滑油１０８は、ランナ円筒部１１２とジャーナル軸受１４０間の接触面を保護し、かつ、発生する熱を除去する。このように、上部油槽１０５内の循環流路における潤滑油１０８の循環が生し、スラスト軸受１３０およびジャーナル軸受１４０において発生する熱が潤滑油１０８に移行する。 The lubricating oil 108 flowing out above the pad support member 132 protects the contact surface between the plurality of thrust pads 133 and the runner lower cylindrical portion 112b that slides while in contact with the thrust pads 133, and removes the generated heat. Further, the lubricating oil 108 protects the contact surface between the runner cylindrical portion 112 and the journal bearing 140, and removes the generated heat. In this way, the circulation of the lubricating oil 108 in the circulation flow path in the upper oil tank 105 is generated, and the heat generated in the thrust bearing 130 and the journal bearing 140 is transferred to the lubricating oil 108.

また、ロータシャフト１１の回転に伴い、潤滑油ポンプ２００の潤滑油ポンプ回転部２１０が回転すると、潤滑油ポンプ２００の下部環状板２１２とランナ円筒部１１２との間の潤滑油ポンプ入口開口２１４から、潤滑油ポンプ回転部２１０の下方の潤滑油１０８が潤滑油ポンプ回転部２１０に流入する。潤滑油ポンプ回転部２１０に流入した潤滑油１０８は、複数の羽根２１１の間を流れながら径方向外側に移行し、潤滑油ポンプ回転部２１０の径方向外側から流出する。 Further, when the lubricating oil pump rotating portion 210 of the lubricating oil pump 200 rotates with the rotation of the rotor shaft 11, the lubricating oil pump inlet opening 214 between the lower annular plate 212 of the lubricating oil pump 200 and the runner cylindrical portion 112 , The lubricating oil 108 below the lubricating oil pump rotating portion 210 flows into the lubricating oil pump rotating portion 210. The lubricating oil 108 that has flowed into the lubricating oil pump rotating portion 210 moves radially outward while flowing between the plurality of blades 211, and flows out from the radial outside of the lubricating oil pump rotating portion 210.

潤滑油ポンプ回転部２１０の径方向外側に流出した潤滑油１０８は、潤滑油ポンプ静止部２２０内の静止部内部空間２２５に流入する。潤滑油１０８が潤滑油ポンプ静止部２２０内に流入後、潤滑油１０８の流速は、低下するため、静圧が増加する。したがって、潤滑油ポンプ静止部２２０内では、高い圧力が維持され、潤滑油ポンプ静止部２２０内空間の潤滑油１０８は、吐出管２２４から冷却器入口配管４２０側に流出する。 The lubricating oil 108 that has flowed out in the radial direction of the lubricating oil pump rotating portion 210 flows into the stationary portion internal space 225 in the lubricating oil pump stationary portion 220. After the lubricating oil 108 flows into the stationary portion 220 of the lubricating oil pump, the flow velocity of the lubricating oil 108 decreases, so that the static pressure increases. Therefore, a high pressure is maintained in the stationary portion 220 of the lubricating oil pump, and the lubricating oil 108 in the space inside the stationary portion 220 of the lubricating oil pump flows out from the discharge pipe 224 to the cooler inlet pipe 420 side.

冷却器入口配管４２０を経由して冷却器４１０に流入した潤滑油１０８は、冷却器４１０において冷却された後に、冷却器出口配管４３０およびこれに接続する戻り管１０５ｈを経由して、上部油槽１０５内に流入する。このように、上部軸受構造体１００と冷却器４１０との間の循環流路における、潤滑油１０８の循環および冷却作用が生ずる。 The lubricating oil 108 that has flowed into the cooler 410 via the cooler inlet pipe 420 is cooled in the cooler 410, and then passes through the cooler outlet pipe 430 and the return pipe 105h connected to the cooler outlet pipe 430, and then the upper oil tank 105. Inflow into. In this way, the circulation and cooling action of the lubricating oil 108 occurs in the circulation flow path between the upper bearing structure 100 and the cooler 410.

以上のように、立形回転電機５００の運転状態においては、ロータシャフト１１の回転により、上部油槽１０５内の潤滑油１０８について、上部油槽１０５内の第１の循環および外部の冷却器との間の第２の循環が形成される。第１の循環によって、スラスト軸受１３０およびジャーナル軸受１４０において生じた熱が潤滑油１０８に移行する。また、第２の循環によって、潤滑油１０８に移行した熱が、冷却器において除去される。 As described above, in the operating state of the vertical rotary electric machine 500, the rotation of the rotor shaft 11 causes the lubricating oil 108 in the upper oil tank 105 to be between the first circulation in the upper oil tank 105 and the external cooler. A second cycle of The heat generated in the thrust bearing 130 and the journal bearing 140 is transferred to the lubricating oil 108 by the first circulation. Further, the heat transferred to the lubricating oil 108 is removed in the cooler by the second circulation.

スラスト軸受等において生じた熱を除去するために、外部に新たにポンプを設けることは、その軸受部の冷却手段、軸受部のシール手段等をさらに設ける必要があり、設備が大掛かりとならざるを得ない。 In order to remove the heat generated in the thrust bearing, etc., if a new pump is provided outside, it is necessary to further provide cooling means for the bearing part, sealing means for the bearing part, etc., and the equipment must be large-scale. I don't get it.

本実施形態に係る立形回転電機５００においては、上部軸受構造体１００にポンプ機能を内蔵させることにより、ポンプ自身の冷却やシールなどの手段を不要とし、簡素化された構成によって冷却能力を向上させることができる。 In the vertical rotary electric machine 500 according to the present embodiment, by incorporating a pump function in the upper bearing structure 100, means such as cooling and sealing of the pump itself are not required, and the cooling capacity is improved by a simplified configuration. Can be made to.

［第２の実施形態］
図７は、第２の実施形態に係る上部軸受構造体の構成を示す立断面図である。また、図８は、潤滑油ポンプの詳細を示す立断面図である。 [Second Embodiment]
FIG. 7 is a vertical sectional view showing the configuration of the upper bearing structure according to the second embodiment. Further, FIG. 8 is a vertical sectional view showing details of the lubricating oil pump.

本第２の実施形態においては、第１の実施形態における潤滑油ポンプ２００に代えて、潤滑油ポンプ３００が設けられている。その他の点においては、第１の実施形態と同様である。 In the second embodiment, the lubricating oil pump 300 is provided in place of the lubricating oil pump 200 in the first embodiment. In other respects, it is the same as that of the first embodiment.

本実施形態における潤滑油ポンプ３００は、潤滑油ポンプ回転部３１０および潤滑油ポンプ静止部３２０を有する。 The lubricating oil pump 300 in this embodiment has a lubricating oil pump rotating portion 310 and a lubricating oil pump stationary portion 320.

潤滑油ポンプ回転部３１０は、回転部円筒部材３１１を有する。回転部円筒部材３１１は、ランナ円筒部１１２の径方向外側に取り付けられており、外形は、中央に軸方向に貫通する開口が形成された、円環状である。また、回転部円筒部材３１１は、自重を軽減するために、中空に形成されている。 The lubricating oil pump rotating portion 310 has a rotating portion cylindrical member 311. The rotating portion cylindrical member 311 is attached to the radial outer side of the runner cylindrical portion 112, and the outer shape is an annular shape having an axially penetrating opening formed in the center. Further, the rotating portion cylindrical member 311 is formed to be hollow in order to reduce its own weight.

回転部円筒部材３１１の側面には、潤滑油駆動要素としてのスパイラル流路３１３が形成されている。スパイラル流路３１３は、回転部円筒部材３１１の側面の下端から上端にわたって連通するように、らせん状に形成されている。なお、スパイラル流路３１３は、１本には限らない。周方向に互いにずれた複数のスパイラル流路３１３が形成されていてもよい。 A spiral flow path 313 as a lubricating oil driving element is formed on the side surface of the rotating portion cylindrical member 311. The spiral flow path 313 is formed in a spiral shape so as to communicate from the lower end to the upper end of the side surface of the rotating portion cylindrical member 311. The number of spiral flow paths 313 is not limited to one. A plurality of spiral flow paths 313 that are displaced from each other in the circumferential direction may be formed.

潤滑油ポンプ静止部３２０は、潤滑油ポンプ回転部３１０を囲むように形成された静止部容器３２０ａおよび吐出管３２６を有する。静止部容器３２０ａは、下部環状板３２１、上部環状板３２２、および下部環状板３２１の外縁および上部環状板３２２の外縁を接続する静止部円筒部材３２３を有する。上部環状板３２２の上部には、環状の出口空間室３２５が形成されている。吐出管３２６は、出口空間室３２５内の空間と上部油槽１０５の外部とを連通する。吐出管３２６の油槽径方向外側筒１０５ａをリークタイトに貫通している。 The lubricating oil pump stationary portion 320 has a stationary portion container 320a and a discharge pipe 326 formed so as to surround the lubricating oil pump rotating portion 310. The rest container 320a has a lower annular plate 321 and an upper annular plate 322, and a stationary cylindrical member 323 that connects the outer edge of the lower annular plate 321 and the outer edge of the upper annular plate 322. The upper portion of the upper annular plate 322, annular outlet space chamber 325 is formed. The discharge pipe 326 communicates the space inside the outlet space chamber 325 with the outside of the upper oil tank 105. It leak tightly penetrates the outer cylinder 105a in the radial direction of the oil tank of the discharge pipe 326.

下部環状板３２１の径方向外側の部分には、潤滑油１０８が潤滑油ポンプ３００内に流入するための複数の入口開口３２４が形成されている。ここで、入口開口３２４は、下部環状板３２１の外周部の一部に周方向に間隔をおいて複数の切欠きを形成し、静止部円筒部材３２３との間に形成することでもよい。あるいは、一部、静止部円筒部材３２３との接続部を残して、ほぼ全周に入口開口３２４を形成してもよい。 A plurality of inlet openings 324 for flowing the lubricating oil 108 into the lubricating oil pump 300 are formed in the radial outer portion of the lower annular plate 321. Here, the inlet opening 324 may be formed by forming a plurality of notches at a part of the outer peripheral portion of the lower annular plate 321 at intervals in the circumferential direction and forming the inlet opening 324 between the inlet and the cylindrical member 323. Alternatively, the inlet opening 324 may be formed on substantially the entire circumference, leaving a part of the connection portion with the stationary cylindrical member 323.

回転部円筒部材３１１の径方向外側の、最外部分の面である径方向最外面３１２は、潤滑油ポンプ静止部３２０の静止部円筒部材３２３の内面３２３ａとは、同軸に配されて、ギャップ３１２ａを介して対向している。ギャップ３１２ａは、潤滑油ポンプ３００の性能を確保する上では、できるだけ小さいことが好ましい。一方、径方向最外面３１２と静止部円筒部材３２３の内面３２３ａとが接触することにより、振動の発生あるいは、カジリの発生をもたらすことは、立形回転電機５００の機能に悪影響を与えることから避けなければならない。したがって、部品の製作誤差、組み立て誤差を考慮して、ギャップ３１２ａの値を設定する。 The radial outermost surface 312, which is the outermost surface of the rotating portion cylindrical member 311 in the radial direction, is arranged coaxially with the inner surface 323a of the stationary portion cylindrical member 323 of the lubricating oil pump stationary portion 320, and has a gap. They face each other via 312a. The gap 312a is preferably as small as possible in order to ensure the performance of the lubricating oil pump 300. On the other hand, the contact between the outermost surface 312 in the radial direction and the inner surface 323a of the stationary cylindrical member 323 to cause vibration or galling is avoided because it adversely affects the function of the vertical rotary electric machine 500. There must be. Therefore, the value of the gap 312a is set in consideration of the manufacturing error and the assembly error of the parts.

スパイラル流路３１３の断面は、径方向外側に開放された矩形形状である。ここで、スパイラル流路３１３の形成の際には、図８に示すように、回転部円筒部材３１１の表面を切削加工することにより、スパイラル流路３１３を形成してもよい。あるいは、図示を省略するが、矩形断面の長く延びた流路形成用の部材を、円筒形状の回転部円筒部材３１１の表面に巻き付けることにより形成してもよい。巻き付ける場合、流路形成用の部材が回転部円筒部材３１１の表面から浮くことは、ギャップ３１２ａの均一化の観点では表面位置の不均一は好ましくない。また、潤滑油ポンプ３００の性能確保上は、リークの存在は好ましくない。しかしながら、リークを完全にゼロにすることは必ずしも必要ではなく、リークの存在等を考慮して設計することでもよい。 The cross section of the spiral flow path 313 has a rectangular shape that is open to the outside in the radial direction. Here, when forming the spiral flow path 313, as shown in FIG. 8, the spiral flow path 313 may be formed by cutting the surface of the rotating portion cylindrical member 311. Alternatively, although not shown, a member for forming a flow path having a long rectangular cross section may be wound around the surface of a cylindrical rotating portion cylindrical member 311. In the case of winding, the fact that the member for forming the flow path floats from the surface of the rotating portion cylindrical member 311 is not preferable from the viewpoint of making the gap 312a uniform. Further, the presence of a leak is not preferable for ensuring the performance of the lubricating oil pump 300. However, it is not always necessary to completely eliminate the leak, and the design may be made in consideration of the existence of the leak and the like.

あるいは、ギャップを形成する必要のない構成とすることでもよい。すなわち、スパイラル流路３１３が形成されている径方向部分のみ、回転部円筒部材３１１を本体部分と径方向の円筒状部分とに区分し、円筒状部分は本体部分とは別の、たとえば、カーボン系材料製、あるいはピストンリング等に用いられる低合金鋼製として、静止部円筒部材３２３の内面３２３ａと密着させ、内面３２３ａ上を摺動させるようにしてもよい。駆動対象が潤滑油１０８であることから、接触面の安定皮膜の確保の点で有利である。 Alternatively, the configuration may be such that it is not necessary to form a gap. That is, only in the radial portion where the spiral flow path 313 is formed, the rotating portion cylindrical member 311 is divided into a main body portion and a radial cylindrical portion, and the cylindrical portion is different from the main body portion, for example, carbon. It may be made of a system material or a low alloy steel used for a piston ring or the like, and may be brought into close contact with the inner surface 323a of the stationary cylindrical member 323 and slid on the inner surface 323a. Since the driving target is the lubricating oil 108, it is advantageous in terms of securing a stable film on the contact surface.

潤滑油ポンプ静止部３２０の上部には、環状の出口空間室３２５が形成されている。出口空間室３２５は、冷却器４１０側に潤滑油を送る際の潤滑油ポンプ３００の出口プレナムとなっており、第１の実施形態における潤滑油ポンプ２００の潤滑油ポンプ静止部２２０内の空間と同様に、動圧を静圧に変換する部分である。なお、出口空間室３２５内の下方に、周方向に互いに間隔をおいて複数の案内羽根（図示せず）を設けて、出口空間室３２５に流入する潤滑油１０８の乱れによる圧力損失の増加を抑制する構成でもよい。 An annular outlet space chamber 325 is formed above the stationary portion 320 of the lubricating oil pump. The outlet space chamber 325 serves as an outlet plenum of the lubricating oil pump 300 when sending lubricating oil to the cooler 410 side, and is a space in the lubricating oil pump stationary portion 220 of the lubricating oil pump 200 in the first embodiment. Similarly, it is the part that converts dynamic pressure into static pressure. In addition, a plurality of guide blades (not shown) are provided below the outlet space chamber 325 at intervals in the circumferential direction to increase the pressure loss due to the disturbance of the lubricating oil 108 flowing into the outlet space chamber 325. It may be a structure that suppresses.

図９は、潤滑油ポンプの第１の変形例を示す部分立断面図である。本第１の変形例では、スパイラル流路３１４の断面形状は、第２の実施形態におけるスパイラル流路３１３の断面形状より、径方向外側に拡がった形状である。径方向最外面３１２の面積が狭くなっている分、第２の実施形態におけるスパイラル流路３１３より流路断面積が大きくなっている。また、断面が径方向外側に拡がっている分、切削加工がしやすい形状である。 FIG. 9 is a partial vertical sectional view showing a first modification of the lubricating oil pump. In the first modification, the cross-sectional shape of the spiral flow path 314 is a shape that extends radially outward from the cross-sectional shape of the spiral flow path 313 in the second embodiment. Since the area of the outermost surface 312 in the radial direction is narrowed, the cross-sectional area of the flow path is larger than that of the spiral flow path 313 in the second embodiment. In addition, since the cross section extends outward in the radial direction, the shape is easy to cut.

図１０は、潤滑油ポンプの第２の変形例を示す部分立断面図である。本第２の変形例では、スパイラル流路３１５の断面形状は、第２の実施形態におけるスパイラル流路３１３の断面形状に比べて、径方向内側が丸い曲面状になっている。滑らかな凹曲面状のスパイラル流路３１５であるため、切削加工がしやすい形状である。 FIG. 10 is a partial vertical sectional view showing a second modification of the lubricating oil pump. In the second modification, the cross-sectional shape of the spiral flow path 315 is a curved surface having a rounded inner diameter in the radial direction as compared with the cross-sectional shape of the spiral flow path 313 in the second embodiment . Since a spiral flow path 315 synovial Rakana concavely curved, a cutting workable shape.

［その他の実施形態］
以上、本発明の実施形態を説明したが、実施形態は例として提示したものであり、発明の範囲を限定することは意図していない。 [Other Embodiments]
Although the embodiments of the present invention have been described above, the embodiments are presented as examples and are not intended to limit the scope of the invention.

さらに、実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 Further, the embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. The embodiments and modifications thereof are included in the scope and the gist of the invention as well as the invention described in the claims and the equivalent scope thereof.

１０…回転子、１１…ロータシャフト、１２…回転子鉄心、２０…固定子、２１…固定子鉄心、２２…固定子巻線、４０…下部軸受部、４１…下部油槽、４２…ジャーナル軸受、５０…フレーム、５０ａ…フレーム筒部、５０ｂ…フレーム底板、５０ｃ…フレーム上板、１００…上部軸受構造体、１０５…上部油槽、１０５ａ…油槽径方向外側筒、１０５ｂ…油槽径方向内側筒、１０５ｃ…油槽底板、１０５ｄ…上部カバー蓋、１０５ｈ…戻り管、１０８…潤滑油、１１０…ランナ、１１１…ランナ上部円板部、１１２…ランナ円筒部、１１２ａ…ランナ上部円筒部、１１２ｂ…ランナ下部円筒部、１１４…連通孔、１３０…スラスト軸受、１３１…台板、１３１ａ…径方向内側面、１３１ｆ…流路、１３２…パッド支持部材、１３２ａ…内側面、１３２ｂ…ギャップ、１３３…スラストパッド、１３３ａ…突起、１４０…ジャーナル軸受、１４１…ジャーナル軸受円板部、１４２…ジャーナル軸受円筒部、１４２ａ…連通孔、２００…潤滑油ポンプ、２１０…潤滑油ポンプ回転部、２１１…羽根（潤滑油駆動要素）、２１２…下部環状板、２１２ａ…回転部入口開口、２１３…上部環状板、２１４…潤滑油ポンプ入口開口、２２０…潤滑油ポンプ静止部、２２０ａ…静止部容器、２２１…上部環状板、２２２…下部環状板、２２３…静止部円筒部材、２２４…吐出管、２２４ｆ…フランジ、２２５…静止部内部空間、３００…潤滑油ポンプ、３１０…潤滑油ポンプ回転部、３１１…回転部円筒部材、３１２…径方向最外面、３１２ａ…ギャップ、３１３、３１４、３１５…スパイラル流路（潤滑油駆動要素）、３２０…潤滑油ポンプ静止部、３２０ａ…静止部容器、３２１…下部環状板、３２２…上部環状板、３２３…静止部円筒部材、３２３ａ…内面、３２４…入口開口、３２５…出口空間室、３２６…吐出管、４１０…冷却器、４２０…冷却器入口配管、４２１…油槽出口フランジ、４２２…冷却器入口弁、４３０…冷却器出口配管、４３１…油槽入口フランジ、４３２…冷却器出口弁、５００…立形回転電機、６００…立形回転電機システム 10 ... rotor, 11 ... rotor shaft, 12 ... rotor core, 20 ... stator, 21 ... stator core, 22 ... stator winding, 40 ... lower bearing, 41 ... lower oil tank, 42 ... journal bearing, 50 ... frame, 50a ... frame cylinder, 50b ... frame bottom plate, 50c ... frame top plate, 100 ... upper bearing structure, 105 ... upper oil tank, 105a ... oil tank radial outer cylinder, 105b ... oil tank radial inner cylinder, 105c ... Oil tank bottom plate, 105d ... Top cover lid, 105h ... Return pipe, 108 ... Lubricating oil, 110 ... Runner, 111 ... Runner upper disk part, 112 ... Runner cylinder part, 112a ... Runner upper cylinder part, 112b ... Runner lower cylinder Part, 114 ... Communication hole, 130 ... Thrust bearing, 131 ... Base plate, 131a ... Radial inner surface, 131f ... Flow path, 132 ... Pad support member, 132a ... Inner surface, 132b ... Gap, 133 ... Thrust pad, 133a ... Projection, 140 ... Journal bearing, 141 ... Journal bearing disk part, 142 ... Journal bearing cylindrical part, 142a ... Communication hole, 200 ... Lubricating oil pump, 210 ... Lubricating oil pump rotating part, 211 ... Blade (lubricating oil driving element) ), 212 ... lower annular plate, 212a ... rotating section inlet opening, 213 ... upper annular plate, 214 ... lubricating oil pump inlet opening, 220 ... lubricating oil pump stationary unit, 220a ... stationary unit container, 221 ... upper annular plate, 222 ... lower annular plate, 223 ... the stationary part cylindrical member, 224 ... discharge pipe, 224f ... flange, 225 ... stationary portion internal space, 300 ... lubricating oil pump, 310 ... lubricating oil pump rotating unit, 311 ... rotating part cylindrical member , 312 ... Radial outermost surface, 312a ... Gap, 313, 314, 315 ... Spiral flow path (lubricating oil driving element), 320 ... Lubricating oil pump stationary part, 320a ... Static part container, 321 ... Lower annular plate, 322 ... Upper annular plate, 323 ... stationary cylindrical member, 323a ... inner surface, 324 ... inlet opening, 325 ... outlet space chamber, 326 ... discharge pipe, 410 ... cooler, 420 ... cooler inlet pipe, 421 ... oil tank outlet flange, 422 ... Cooler inlet valve, 430 ... Cooler outlet piping, 431 ... Oil tank inlet flange, 432 ... Cooler outlet valve, 500 ... Vertical rotary electric machine, 600 ... Vertical rotary electric machine system

Claims

A thrust bearing that rotatably supports the rotor of a vertical rotary electric machine having a rotor shaft whose shaft extends in the vertical direction and supports an axial load.
A journal bearing that supports the load in the direction perpendicular to the axial direction,
An annular statically fixed upper oil tank containing lubricating oil for lubricating and cooling the thrust bearing and the journal bearing,
A runner attached to the rotor shaft to transmit the axial load to the thrust bearing,
The lubricating oil pump that drives the lubricating oil and
It is an upper bearing structure provided with
The upper oil tank
A cylindrical oil tank radial inner cylinder that is arranged with a radial gap from the rotor shaft and extends upward.
A tubular oil tank radial outer cylinder arranged on the radial outer side of the oil tank radial inner cylinder and extending upward,
A flat plate-shaped oil tank bottom plate connecting the lower end of the oil tank radial inner cylinder and the lower end of the oil tank radial outer cylinder,
Have,
The runner
The upper disk of the runner, which is attached to the rotor shaft and extends outward in the radial direction,
A runner cylindrical portion connected to the lower surface of the runner upper disk portion and extending downward,
Have,
The lubricating oil pump
A lubricating oil pump rotating portion mounted on the radial outer side of the runner cylindrical portion and provided with a lubricating oil driving element,
A lubricating oil pump stationary portion, which is arranged on the radial outer side of the lubricating oil pump rotating portion and drives the lubricating oil together with the lubricating oil pump rotating portion while the rotor shaft is rotating,
Have a,
The lubricating oil pump rotating part is
An annular disk-shaped upper annular plate that is attached to the runner cylinder and extends outward in the radial direction,
A plurality of blades having their upper ends supported by the upper annular plate and provided as the lubricating oil driving element and arranged radially outward of the runner cylindrical portion at intervals in the circumferential direction.
A lower annular plate having an outer diameter similar to that of the upper annular plate and having an opening having a diameter larger than that of the upper annular plate and connecting to the lower ends of the plurality of blades.
Equipped with
The stationary part of the lubricating oil pump
A stationary container that forms an internal space of the stationary unit that communicates with the radial outside of the rotating portion of the lubricating oil pump.
A discharge pipe that communicates the internal space of the stationary portion with the outside of the outer cylinder in the radial direction of the oil tank.
Equipped with
An upper bearing structure characterized by that.

The upper bearing structure according to claim 1 , wherein a return pipe for communicating the space inside the oil tank radial outer cylinder to the outside is attached to the oil tank radial outer cylinder .

The upper bearing structure according to claim 1 or 2 , wherein the runner cylindrical portion is formed with a communication hole penetrating in the radial direction .

Upper bearing structure according to any one of claims 1 to claim 3, characterized in that said journal bearing is communicating hole penetrating in the radial direction are formed.

The upper bearing structure according to any one of claims 1 to 4.
With the rotor
A cylindrical stator core arranged statically and fixed to the outside in the radial direction of the rotor core of the rotor and a stator core formed on the inner peripheral surface of the stator core, penetrating in the vertical direction and spaced apart from each other in the circumferential direction. A stator having a stator winding penetrating a plurality of stator slots provided, and a stator
A lower bearing portion that supports the radial load at the lower portion of the rotor shaft, and
A vertical rotary electric machine characterized by being equipped with.

The vertical rotary electric machine according to claim 5 and
A cooler that cools the lubricating oil and
A cooler inlet pipe that serves as a passage for the lubricating oil from the vertical rotary electric machine to the cooler,
A cooler outlet pipe that serves as a passage for the lubricating oil from the cooler to the vertical rotary electric machine,
A vertical rotary electric system characterized by being equipped with.