JP4936029B2 - Support structure for rotating machinery - Google Patents

Support structure for rotating machinery Download PDF

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JP4936029B2
JP4936029B2 JP2010000978A JP2010000978A JP4936029B2 JP 4936029 B2 JP4936029 B2 JP 4936029B2 JP 2010000978 A JP2010000978 A JP 2010000978A JP 2010000978 A JP2010000978 A JP 2010000978A JP 4936029 B2 JP4936029 B2 JP 4936029B2
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support structure
rotating machine
rotary machine
machine
turbocharger
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JP2011140892A (en
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知幸 岩崎
宏基 嶋屋
信一郎 栃尾
良輔 末長
守男 近藤
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Mitsui Engineering and Shipbuilding Co Ltd
Mitsui E&S Holdings Co Ltd
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Mitsui Engineering and Shipbuilding Co Ltd
Mitsui E&S Holdings Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Description

本発明は、内燃機関のターボチャージャに対して同軸に連結した回転機械の支持構造に関する。   The present invention relates to a support structure for a rotary machine connected coaxially to a turbocharger of an internal combustion engine.

従来、ターボチャージャを備えた内燃機関があるが、このターボチャージャは、内燃機関の排ガスエネルギによって駆動されるタービンと、上記タービンによって駆動され、圧縮空気を送るコンプレッサを有する。その際、ターボチャージャに対し、そのコンプレッサ側軸端に回転機械が連結されている装置が知られている（特許文献１）。回転機械は、発電機又は電動機として運転される。   Conventionally, there is an internal combustion engine provided with a turbocharger. This turbocharger has a turbine driven by exhaust gas energy of the internal combustion engine and a compressor that is driven by the turbine and sends compressed air. At that time, a device is known in which a rotating machine is connected to the compressor side shaft end of the turbocharger (Patent Document 1). The rotating machine is operated as a generator or an electric motor.

図５は、特許文献１に開示されている従来の回転機械の支持構造を示す構成図である。
図５において、矢印Ｘは軸方向、Ｙは水平方向、Ｚは垂直方向を表す。ターボチャージャ２は、ターボチャージャ２に具備された固定脚１２によって内燃機関上の設置床１に設置されている。ターボチャージャ２と回転機械７との間に吸気サイレンサ６が配置される。ターボチャージャ２は、コンプレッサ３とタービン４を有し、回転機械７は、回転子８、回転機械フレーム（以下、「フレーム」）９を有する。フレーム９は、ターボチャージャ２の吸気サイレンサ６の同芯位置にオーバハングしてフランジ部１０で結合され、回転子８は、いずれか一方にスプラインを有する中間軸１１を介してターボチャージャ回転軸５と連結されるか、又は伸縮可能な継手で連結される。 FIG. 5 is a configuration diagram showing a conventional support structure for a rotary machine disclosed in Patent Document 1. As shown in FIG.
In FIG. 5, an arrow X represents an axial direction, Y represents a horizontal direction, and Z represents a vertical direction. The turbocharger 2 is installed on the installation floor 1 on the internal combustion engine by a fixed leg 12 provided in the turbocharger 2. An intake silencer 6 is disposed between the turbocharger 2 and the rotary machine 7. The turbocharger 2 includes a compressor 3 and a turbine 4, and the rotating machine 7 includes a rotor 8 and a rotating machine frame (hereinafter “frame”) 9. The frame 9 overhangs at the concentric position of the intake silencer 6 of the turbocharger 2 and is connected by a flange portion 10. They are connected or connected by an extendable joint.

このような構成により、運転時において、高温の排ガスでタービン４が駆動されるターボチャージャ２に、固定脚１２を基点として軸方向Ｘと垂直方向Ｚへの熱伸びが発生する。しかしながら、フレーム９は、ターボチャージャ２の吸気サイレンサ６の同芯位置にオーバハングしてフランジ部１０で結合され、内燃機関上の設置床１には固定されていないので、フレーム９は、ターボチャージャ２に追従して軸方向と垂直方向に移動することができ、回転機械７は、ターボチャージャ２の熱伸びによる影響を受けない支持構造となっている。   With such a configuration, during operation, the turbocharger 2 in which the turbine 4 is driven by high-temperature exhaust gas generates thermal expansion in the axial direction X and the vertical direction Z with the fixed leg 12 as a base point. However, since the frame 9 overhangs at the concentric position of the intake silencer 6 of the turbocharger 2 and is coupled by the flange portion 10 and is not fixed to the installation floor 1 on the internal combustion engine, the frame 9 is not attached to the turbocharger 2. The rotary machine 7 has a support structure that is not affected by the thermal expansion of the turbocharger 2.

特開２００７−１６２６５４号公報JP 2007-162654 A

しかしながら、上記従来の回転機械７の支持構造は、回転機械７の重量によっては固定部である吸気サイレンサ６が変形し、ターボチャージャ２の軸芯と回転機械７の軸芯にずれが生じ、振動等の発生により、安定した運転ができなくなる可能性がある。また、吸気サイレンサ６の変形によりフランジ部１０に過大な応力が発生し、やはり安定した運転ができなくなる可能性がある。また、内燃機関上の設置床１の振動により吸気サイレンサ６及び回転機械７の振動が大きくなることがあり、吸気サイレンサ６及び回転機械７の取付け部が破損する危険がある。   However, in the conventional support structure of the rotating machine 7, the intake silencer 6 which is a fixed portion is deformed depending on the weight of the rotating machine 7, and the shaft core of the turbocharger 2 and the shaft core of the rotating machine 7 are displaced, causing vibration. If this occurs, stable operation may not be possible. Moreover, excessive stress is generated in the flange portion 10 due to the deformation of the intake silencer 6, and there is a possibility that stable operation cannot be performed. Further, the vibration of the intake silencer 6 and the rotary machine 7 may increase due to the vibration of the installation floor 1 on the internal combustion engine, and there is a risk that the mounting portion of the intake silencer 6 and the rotary machine 7 is damaged.

本発明の目的は、内燃機関のターボチャージャの熱伸びに追従するように常に回転機械をその重量に相当する一定の力で支持し、ターボチャージャと回転機械を常に安定して運転することができる回転機械の支持構造を提供することにある。   An object of the present invention is to always support a rotating machine with a constant force corresponding to its weight so as to follow the thermal expansion of a turbocharger of an internal combustion engine, and to always stably operate the turbocharger and the rotating machine. The object is to provide a support structure for a rotating machine.

上記課題を解決するため、本発明の回転機械の支持構造は、設置床に第１の支持部材により固定された内燃機関のターボチャージャにオーバーハングして取付けられ、かつ同軸に連結した回転機械の支持構造において、前記設置床と前記回転機械との間に、前記回転機械を前記回転機械の重量に相当する一定の力で常に下から押圧し上下移動可能に支持する第２の支持部材を設けたことを特徴とする。 In order to solve the above-described problems, a rotating machine support structure according to the present invention is an overhang attached to a turbocharger of an internal combustion engine fixed to the installation floor by a first support member and is coaxially connected. In the support structure, a second support member is provided between the installation floor and the rotary machine so that the rotary machine is always pressed from below with a constant force corresponding to the weight of the rotary machine so as to be vertically movable. It is characterized by that.

本発明より、回転機械と設置床の間に、回転機械の重量を支える支持部材を設けることにより、内燃機関のターボチャージャの熱伸びに追従し、ターボチャージャと回転機械を常に安定して運転することが可能となる。   According to the present invention, by providing a support member that supports the weight of the rotating machine between the rotating machine and the installation floor, it is possible to follow the thermal expansion of the turbocharger of the internal combustion engine and always operate the turbocharger and the rotating machine stably. It becomes possible.

本発明の実施形態１における回転機械の支持構造を示す図。The figure which shows the support structure of the rotary machine in Embodiment 1 of this invention. 同実施形態１における支持部材付近を水平方向Ｙから見た詳細図。3 is a detailed view of the vicinity of a support member in the first embodiment when viewed from a horizontal direction Y. FIG. 本発明の実施形態２における回転機械の支持構造を示す。The support structure of the rotary machine in Embodiment 2 of this invention is shown. 同実施形態２における支持部材付近を水平方向Ｙから見た詳細図。FIG. 5 is a detailed view of the vicinity of a support member in the second embodiment when viewed from a horizontal direction Y. 同実施形態２における支持部材付近を軸方向Ｘから見た詳細図。FIG. 6 is a detailed view of the vicinity of a support member in the second embodiment when viewed from an axial direction X. 本発明の実施形態３における回転機械の支持構造を示す図。The figure which shows the support structure of the rotary machine in Embodiment 3 of this invention. 同実施形態３における支持部材付近を水平方向Ｙから見た詳細図。FIG. 6 is a detailed view of the vicinity of a support member in the third embodiment when viewed from the horizontal direction Y. 本発明の実施形態４における回転機械の支持構造を示す図。The figure which shows the support structure of the rotary machine in Embodiment 4 of this invention. 同実施形態４における回転機械を軸方向Ｘから見た詳細図。The detailed view which looked at the rotary machine in the same Embodiment 4 from the axial direction X. FIG. 従来の回転機械の支持構造を示す図。The figure which shows the support structure of the conventional rotary machine.

以下、本発明の実施形態について、図面を参照して説明する。従来の技術と同一の構成部分には同一符号を付け、説明を省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those in the conventional technology are denoted by the same reference numerals, and description thereof is omitted.

（実施形態１）
図１ａは、本実施形態における回転機械の支持構造を示した図であり、図１ｂは、支持部材付近を水平方向Ｙから見た詳細図である。
図１ａにおいて、従来の技術と同様に、ターボチャージャ２は、第１の支持部材である固定脚１２によって内燃機関上の設置床１に設置されている。回転機械７は、ターボチャージャ２に同軸で連結されている。フレーム９は、ターボチャージャ２の吸気サイレンサ６の同芯位置にフランジ部１０により結合される。回転子８は、中間軸１１を介してターボチャージャ回転軸５と連結される。 (Embodiment 1)
FIG. 1A is a view showing a support structure for a rotating machine in the present embodiment, and FIG. 1B is a detailed view of the vicinity of a support member as viewed from the horizontal direction Y. FIG.
In FIG. 1a, as in the prior art, the turbocharger 2 is installed on the installation floor 1 on the internal combustion engine by a fixed leg 12 as a first support member. The rotating machine 7 is coaxially connected to the turbocharger 2. The frame 9 is coupled to the concentric position of the intake silencer 6 of the turbocharger 2 by a flange portion 10. The rotor 8 is connected to the turbocharger rotating shaft 5 via the intermediate shaft 11.

本実施形態では、回転機械７は、内燃機関上の設置床１に第２の支持部材（以下、「支持部材」）１３により垂直方向Ｚに支持されている。図１ｂにおいて、支持部材１３は、流体により作動されるピストンとシリンダにより構成される。このように構成された支持部材１３は、流体供給装置１６から流体をシリンダ１４内に供給し、ピストン１５を垂直方向Ｚ、すなわち、回転機械７を下方から上方に押し上げる機構を有している。回転機械７の重量をピストン１５で支えるためには、ピストン１５の断面積をＳ、回転機械７の重量をＭ、流体供給装置１６からの流体の圧力をＰとすると、次式の関係を満足させればよい。
Ｍ＝Ｐ×Ｓ In the present embodiment, the rotary machine 7 is supported in the vertical direction Z by a second support member (hereinafter referred to as “support member”) 13 on the installation floor 1 on the internal combustion engine. In FIG. 1b, the support member 13 is composed of a piston and a cylinder operated by a fluid. The support member 13 configured as described above has a mechanism for supplying fluid from the fluid supply device 16 into the cylinder 14 and pushing up the piston 15 in the vertical direction Z, that is, the rotary machine 7 from below to above. In order to support the weight of the rotating machine 7 with the piston 15, if the cross-sectional area of the piston 15 is S, the weight of the rotating machine 7 is M, and the pressure of the fluid from the fluid supply device 16 is P, the following relationship is satisfied. You can do it.
M = P × S

すなわち、流体供給装置１６から流体を常に一定の圧力Ｐとなるように供給することで、回転機械７が上下方向に移動した場合においても、ピストン１５は、常に回転機械７の重量を支えながら垂直方向に追従して動くことが可能となる。   That is, by supplying the fluid from the fluid supply device 16 so as to always have a constant pressure P, the piston 15 is always vertical while supporting the weight of the rotating machine 7 even when the rotating machine 7 moves in the vertical direction. It is possible to move following the direction.

このような構成により、ターボチャージャ２の運転時に、ターボチャージャ２に熱伸びが発生した場合においても、回転機械７は、支持部材１３によって重量を支えられながら、垂直方向Ｚの熱伸びに追従することができる。吸気サイレンサ６の強度に関係なくターボチャージャ２と回転機械７の軸芯は常に同芯に保たれ、安定した運転が可能となる。また、吸気サイレンサ１６と回転機械７の取付け部に過大な応力が発生することがなく、安定した運転が可能となる。図１ａでは、回転機械として発電機を図示しているが、電動機、減速機等としてもよい。   With such a configuration, even when thermal expansion occurs in the turbocharger 2 during operation of the turbocharger 2, the rotating machine 7 follows the thermal expansion in the vertical direction Z while being supported by the support member 13. be able to. Regardless of the strength of the intake silencer 6, the shaft cores of the turbocharger 2 and the rotating machine 7 are always kept concentric and stable operation is possible. In addition, an excessive stress is not generated at the attachment portion of the intake silencer 16 and the rotary machine 7, and stable operation is possible. In FIG. 1a, a generator is illustrated as a rotating machine, but an electric motor, a speed reducer, or the like may be used.

（実施形態２）
図２ａは、本実施形態における回転機械を連結したターボチャージャの支持構造を示す図であり、図２ｂは、支持部材付近を水平方向Ｙから見た詳細図、図２ｃは、支持部材付近を軸方向Ｘから見た詳細図である。 (Embodiment 2)
FIG. 2A is a view showing a support structure of a turbocharger connected to a rotating machine in this embodiment, FIG. 2B is a detailed view of the vicinity of the support member as viewed from the horizontal direction Y, and FIG. FIG. 5 is a detailed view seen from a direction X.

図２ａにおいて、実施形態１に記載の支持構造に加えて、回転機械７の下部に取付けたレール状部材１７に支持部材１３のピストン１５を接触させて回転機械７を支持する。図２ｂ、図２ｃにおいて、支持部材１３のピストン１５の先端が、回転機械７に取付けたレール状部材１７の凹部に嵌り、回転機械７の軸方向Ｘにスライドできる機構としている。ピストン１５の先端は半球状にすると接触抵抗が小さくなり、より効果的であるが、形状を限定するものではない。また、レール状部材１７をフレーム９に固定した別部材とせず、直接フレーム９に形成してもよい。   In FIG. 2 a, in addition to the support structure described in the first embodiment, the piston 15 of the support member 13 is brought into contact with a rail-like member 17 attached to the lower part of the rotary machine 7 to support the rotary machine 7. 2B and 2C, the tip of the piston 15 of the support member 13 is fitted in the recess of the rail-like member 17 attached to the rotary machine 7 so as to be slidable in the axial direction X of the rotary machine 7. If the tip of the piston 15 is hemispherical, the contact resistance is reduced and more effective, but the shape is not limited. Further, the rail-shaped member 17 may be formed directly on the frame 9 instead of being a separate member fixed to the frame 9.

このような構成により、ターボチャージャ２の運転時に、回転機械７は、支持部材１３によって重量を支えられながら垂直方向Ｚに加え軸方向Ｘの熱伸びにも追従することができ、吸気サイレンサ６の強度に関係なく、ターボチャージャ２と回転機械７の軸芯は常に同芯に保たれ、安定した運転が可能となる。また、吸気サイレンサ６と回転機械７の取付け部に過大な応力が発生することなく、安定した運転が可能となる。   With such a configuration, during operation of the turbocharger 2, the rotating machine 7 can follow the thermal elongation in the axial direction X in addition to the vertical direction Z while being supported by the support member 13. Regardless of the strength, the shaft cores of the turbocharger 2 and the rotary machine 7 are always kept concentric, enabling stable operation. In addition, stable operation is possible without excessive stress being generated in the attachment portion of the intake silencer 6 and the rotary machine 7.

（実施形態３）
図３ａは、本実施形態における回転機械を連結したターボチャージャの支持構造を示した図であり、図３ｂは、支持部材付近を水平方向Ｙから見た詳細図である。
図３ａ、図３ｂにおいて、実施形態２における支持構造に加えて、空気のような流体を内在させたダンパ１８を内燃機関上の設置床１と回転機械７との間で垂直方向Ｚに取付け、両端を固定或いは図示しない自在継手等を介して設置する。なお、実施形態２における回転機械の支持構造に適用した例を示しているが、実施形態１における回転機械の支持構造に適用してもよい。 (Embodiment 3)
FIG. 3A is a view showing a support structure of a turbocharger connected to a rotating machine in the present embodiment, and FIG. 3B is a detailed view of the vicinity of the support member as viewed from the horizontal direction Y.
3a and 3b, in addition to the support structure in the second embodiment, a damper 18 containing a fluid such as air is attached in the vertical direction Z between the installation floor 1 on the internal combustion engine and the rotary machine 7, Both ends are fixed or installed through a universal joint (not shown). In addition, although the example applied to the support structure of the rotary machine in Embodiment 2 is shown, you may apply to the support structure of the rotary machine in Embodiment 1.

このような構成により、実施形態１又は２の効果に加え、ターボチャージャ２の運転時に、回転機械７の垂直方向Ｚの振動をダンパ１８によって減衰させることができるので、更に安定した運転が可能となる。   With such a configuration, in addition to the effects of the first or second embodiment, the vibration in the vertical direction Z of the rotary machine 7 can be damped by the damper 18 during the operation of the turbocharger 2, so that more stable operation is possible. Become.

（実施形態４）
図４ａは、本実施形態における回転機械を連結したターボチャージャの支持構造を示した図であり、図４ｂは、回転機械を軸方向Ｘから見た詳細図である。
図４ａ、図４ｂにおいて、実施形態２における支持構造に加えて、内燃機関上の設置床１と回転機械７の間で、一対のダンパ１８ａ，１８ｂを、軸方向直角面内で設置床１に向けて傾斜するように取付け、両端を固定或いは図示しない自在継手等を介して設置する。すなわち、一対のダンパ１８ａ，１８ｂの各々は、水平方向Ｙに対して角度θ傾斜して取付けられる。なお、実施形態２における支持構造に適用した例を示したが、実施形態１における支持構造に適用してもよい。 (Embodiment 4)
FIG. 4A is a view showing a support structure of a turbocharger connected to a rotating machine in the present embodiment, and FIG. 4B is a detailed view of the rotating machine as viewed from the axial direction X.
4a and 4b, in addition to the support structure in the second embodiment, a pair of dampers 18a and 18b are installed on the installation floor 1 in a plane perpendicular to the axial direction between the installation floor 1 on the internal combustion engine and the rotary machine 7. It is attached so that it inclines toward it, and both ends are fixed or installed via a universal joint (not shown). That is, each of the pair of dampers 18a and 18b is attached with an angle θ inclined with respect to the horizontal direction Y. In addition, although the example applied to the support structure in Embodiment 2 was shown, you may apply to the support structure in Embodiment 1.

このような構成により、機械装置の運転時において実施形態１又は２の効果に加え、垂直方向Ｚの振動に加え水平方向Ｙの振動も減衰させることができるので、更に安定した運転が可能となる。取付け角度θは垂直方向Ｚと水平方向Ｙの振動モードを勘案し、任意に設定すればよい。   With such a configuration, in addition to the effects of the first or second embodiment during operation of the mechanical device, vibration in the horizontal direction Y in addition to vibration in the vertical direction Z can be attenuated, and thus more stable operation is possible. . The attachment angle θ may be arbitrarily set in consideration of the vibration modes in the vertical direction Z and the horizontal direction Y.

１…内燃機関上の設置床、２…ターボチャージャ、３…コンプレッサ、４…タービン、５…ターボチャージャ回転軸、６…吸気サイレンサ、７…回転機械、８…回転子、９…フレーム、１０…フランジ、１１…中間軸、１２…固定脚（第１の支持部材）、１３…第２の支持部材、１４…シリンダ、１５…ピストン、１６…流体供給装置、１７…レール状部材、１８，１８ａ，１８ｂ…ダンパ。   DESCRIPTION OF SYMBOLS 1 ... Installation floor on internal combustion engine, 2 ... Turbocharger, 3 ... Compressor, 4 ... Turbine, 5 ... Turbocharger rotating shaft, 6 ... Intake silencer, 7 ... Rotating machine, 8 ... Rotor, 9 ... Frame, 10 ... Flange, 11 ... intermediate shaft, 12 ... fixed leg (first support member), 13 ... second support member, 14 ... cylinder, 15 ... piston, 16 ... fluid supply device, 17 ... rail-like member, 18, 18a , 18b ... Damper.

Claims (5)

設置床に第１の支持部材により固定された内燃機関のターボチャージャにオーバーハングして取付けられ、かつ同軸に連結した回転機械の支持構造において、
前記設置床と前記回転機械との間に、前記回転機械を前記回転機械の重量に相当する一定の力で常に下から押圧し上下移動可能に支持する第２の支持部材を設けたことを特徴とする回転機械の支持構造。 In a support structure for a rotating machine that is attached to a turbocharger of an internal combustion engine that is fixed to an installation floor by a first support member in an overhanging manner and that is connected coaxially,
A second support member is provided between the installation floor and the rotary machine, the second support member supporting the rotary machine so that the rotary machine is always pressed from below with a constant force corresponding to the weight of the rotary machine so as to be movable up and down. Support structure for rotating machinery. 前記第２の支持部材は、流体により作動されるピストンとシリンダからなることを特徴とする請求項１に記載の回転機械の支持構造。   The rotating machine support structure according to claim 1, wherein the second support member includes a piston and a cylinder operated by a fluid. 前記回転機械に前記第２の支持部材と係合するレール部を設け、前記回転機械を軸方向にスライド可能としたことを特徴とする請求項１又は２に記載の回転機械の支持構造。   The support structure for a rotary machine according to claim 1, wherein a rail portion that engages with the second support member is provided in the rotary machine, and the rotary machine is slidable in an axial direction. 前記設置床と前記回転機械との間に、前記回転機械の振動を減衰するダンパを垂直方向に取付けたことを特徴とする請求項１ないし３のいずれかに記載の回転機械の支持構造。   The rotating machine support structure according to any one of claims 1 to 3, wherein a damper for attenuating vibration of the rotating machine is vertically installed between the installation floor and the rotating machine. 前記設置床と前記回転機械との間に、前記回転機械の振動を減衰する一対のダンパを傾斜させて取付けたことを特徴とする請求項１ないし３のいずれかに記載の回転機械の支持構造。   The rotating machine support structure according to any one of claims 1 to 3, wherein a pair of dampers for damping vibrations of the rotating machine are attached to be inclined between the installation floor and the rotating machine. .
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