JP2016211467A - Gas turbine with water-cooled bulkhead - Google Patents

Gas turbine with water-cooled bulkhead Download PDF

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JP2016211467A
JP2016211467A JP2015097014A JP2015097014A JP2016211467A JP 2016211467 A JP2016211467 A JP 2016211467A JP 2015097014 A JP2015097014 A JP 2015097014A JP 2015097014 A JP2015097014 A JP 2015097014A JP 2016211467 A JP2016211467 A JP 2016211467A
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Prior art keywords
turbine
compressor
bearing
gas turbine
water
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JP2015097014A
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Japanese (ja)
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識 岩瀬
Satoru Iwase
識 岩瀬
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Toyota Motor Corp
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Toyota Motor Corp
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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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Abstract

PROBLEM TO BE SOLVED: To efficiently block the propagation of heat to a compressor from a turbine by a bulkhead which is arranged between the compressor and the turbine, and to obtain a cooling effect to a bearing when the bearing is supported by the bulkhead, in a gas turbine in which the compressor and the turbine are arranged back to back.SOLUTION: Cooling water which absorbs heat propagated to a compressor side from a turbine side while traversing a bulkhead is made to intrude into the bulkhead, and a water channel which exerts a cooling action even to a bearing is formed.SELECTED DRAWING: Figure 1

Description

本発明は、ガスタービンに係り、特に圧縮機とタービンの間を仕切る隔壁の改良に係る。   The present invention relates to a gas turbine, and more particularly to an improvement of a partition wall that partitions between a compressor and a turbine.

圧縮機とタービンとが互に背中合わせに配置されたガスタービンに於いて、圧縮機とタービンの間にヒートインシュレータとして作用する隔壁を設けることが下記の特許文献１に記載されている。   In a gas turbine in which a compressor and a turbine are arranged back to back, it is described in Patent Document 1 below that a partition wall acting as a heat insulator is provided between the compressor and the turbine.

特開平８-３３０７６４号公報JP-A-8-330764

本発明は、圧縮機とタービンとが互に背中合わせに配置されたガスタービンに於いて、圧縮機とタービンの間に設けた隔壁によりタービンから圧縮機への熱の伝播をより効果的に遮断すると共に、かかる隔壁により軸受が支持される場合に軸受に対する冷却効果をも得ることができるようにすることを課題としている。   In the gas turbine in which the compressor and the turbine are arranged back to back, the present invention more effectively blocks the propagation of heat from the turbine to the compressor by the partition wall provided between the compressor and the turbine. At the same time, it is an object to provide a cooling effect for the bearing when the bearing is supported by the partition wall.

上記の課題を解決すべく、本発明は、圧縮機とタービンとが互に背中合わせに配置されたガスタービンにして、前記圧縮機と前記タービンの間に延在し且ガスタービンの回転軸を該圧縮機と該タービンの間にて支持する軸受を支持する隔壁を備え、該隔壁内には該隔壁を横切って前記タービンの側から前記圧縮機の側へ伝播する熱を途中で吸収する冷却水を通すと共に前記軸受に対しても冷却作用を及ぼす水路が設けられていることを特徴とするガスタービンを提案するものである。   In order to solve the above-mentioned problems, the present invention provides a gas turbine in which a compressor and a turbine are arranged back to back, and extends between the compressor and the turbine, and the rotation shaft of the gas turbine is disposed in the gas turbine. A partition that supports a bearing that supports between the compressor and the turbine is provided, and in the partition, cooling water that absorbs heat that propagates from the turbine side to the compressor side across the partition. In addition, the present invention proposes a gas turbine characterized in that a water channel is provided for passing the cooling and also for the bearing.

前記水路に通される冷却水としては、電動車輌に於いて主動力用電動機およびインバータを冷却する冷却水が流用されてよい。   As the cooling water passed through the water channel, cooling water for cooling the main power motor and the inverter may be used in the electric vehicle.

上記の如く、圧縮機とタービンとが互に背中合わせに配置されたガスタービンが、前記圧縮機と前記タービンの間に延在し且ガスタービンの回転軸を該圧縮機と該タービンの間にて支持する軸受を支持する隔壁を備え、該隔壁内に該隔壁を横切って前記タービンの側から前記圧縮機の側へ伝播する熱を途中で吸収する冷却水を通すと共に前記軸受に対しても冷却作用を及ぼす水路が設けられれば、圧縮機とタービンとが互に背中合わせに配置されたガスタービンに於けるタービンから圧縮機への熱の伝播をよりよく遮断して圧縮機の温度上昇を抑え、その作動効率を向上させると共に、ガスタービンの回転軸を圧縮機とタービンの間にて支持する軸受をより効果的に冷却することにより、かかる軸受の耐久性を高めることができる。   As described above, the gas turbine in which the compressor and the turbine are arranged back to back extends between the compressor and the turbine, and the rotating shaft of the gas turbine is interposed between the compressor and the turbine. A partition wall for supporting the bearing is provided, and cooling water that absorbs heat that is propagated from the turbine side to the compressor side across the partition wall is passed through the partition wall, and the bearing is also cooled. If a water channel that acts is provided, the heat transfer from the turbine to the compressor in the gas turbine in which the compressor and the turbine are arranged back to back is better blocked, and the temperature rise of the compressor is suppressed. While improving the operating efficiency, more effectively cooling the bearing that supports the rotating shaft of the gas turbine between the compressor and the turbine, the durability of the bearing can be enhanced.

圧縮機とタービンとが互に背中合わせに配置されるような小型のガスタービンは電動車輌にレンジエクステンダーとして用いられるが、そのような場合、電動車輌に於いては、主動力用電動機およびインバータを冷却する冷却水循環装置が設けられるので、かかるガスタービンが電動車輌のレンジエクステンダーとして用いられる場合には、前記冷却水循環装置の水を前記水路に通す冷却水として流用すれば、上記の隔壁冷却用に新たな冷却水循環装置を設けなくても済む。   Small gas turbines in which the compressor and turbine are placed back to back are used as range extenders in electric vehicles. In such cases, the main power motor and inverter are cooled in the electric vehicle. When the gas turbine is used as a range extender of an electric vehicle, if the water of the cooling water circulation device is diverted as the cooling water passing through the water channel, the cooling water circulation device is newly added for cooling the partition wall. It is not necessary to provide a cooling water circulation device.

本発明による水冷隔壁を備えたガスタービンを一つの実施例について示す一部断面による概略図である。It is the schematic by the partial cross section which shows the gas turbine provided with the water cooling partition by this invention about one Example.

図１に於いて、１は圧縮機、２はタービンであり、両者は背中合わせに同軸に配置されており、隔壁３がそれらの間に延在するよう設けられている。隔壁３は、図示の実施例では圧縮機のインペラと一体の軸部４とタービンのロータと一体の軸部５と両者に跨る軸部材６とからなるガスタービン回転軸を圧縮機１とタービン２の間にて支持する軸受７を、その周りから支持している。尚、図示の実施例では、軸受７は、空気通路８を経て圧入され、タービン１と隔壁３の間の空隙９を通って排出される空気流により潤滑される空気軸受である。   In FIG. 1, 1 is a compressor, 2 is a turbine, both are coaxially arranged back to back, and a partition wall 3 is provided so as to extend between them. In the illustrated embodiment, the partition wall 3 has a gas turbine rotating shaft composed of a shaft portion 4 integral with the impeller of the compressor, a shaft portion 5 integral with the rotor of the turbine, and a shaft member 6 straddling both of the compressor 1 and the turbine 2. The bearing 7 which supports between is supported from the circumference | surroundings. In the illustrated embodiment, the bearing 7 is an air bearing that is press-fitted through the air passage 8 and is lubricated by the air flow discharged through the gap 9 between the turbine 1 and the partition wall 3.

隔壁３には、タービン２の側から圧縮機１の側へ伝播する熱を途中で吸収する冷却水を通すと共に軸受７に対しても冷却作用を及ぼす水路１０が設けられている。水路１０には、図には示されていない外部の冷却水循環装置により入口１０iから出口１０eへ向けて冷却水が流されるようになっている。   The partition wall 3 is provided with a water passage 10 through which cooling water that absorbs heat that is propagated from the turbine 2 side to the compressor 1 side is passed and that also exerts a cooling action on the bearing 7. Cooling water flows through the water channel 10 from the inlet 10i to the outlet 10e by an external cooling water circulation device not shown in the drawing.

かかる水路１０により隔壁３内に冷却水流が形成されることにより、タービン２の側から圧縮機１の側へ伝播する熱が途中で吸収され、圧縮機の温度が低く抑えられることにより圧縮機の作動効率を向上させることができる。またかかる水路１０によって軸受７に対し冷却作用を及ぼすことにより、軸受７の耐久性を高めることができる。   By forming a cooling water flow in the partition wall 3 by the water channel 10, heat propagating from the turbine 2 side to the compressor 1 side is absorbed in the middle, and the compressor temperature is suppressed to a low level. The operating efficiency can be improved. Moreover, the durability of the bearing 7 can be improved by exerting a cooling action on the bearing 7 by the water channel 10.

以上に於いては本発明を一つの実施例について詳細に説明したが、かかる実施例について本発明の範囲内にて種々の変更が可能であることは当業者にとって明らかであろう。   While the invention has been described in detail with reference to an embodiment thereof, it will be apparent to those skilled in the art that various modifications can be made to the embodiment without departing from the scope of the invention.

１…圧縮機、２…タービン、３…隔壁、４…圧縮機インペラと一体の軸部、５…タービンロータと一体の軸部、６…軸部材、７…軸受、８…空気通路、９…空隙、１０…水路、１０i…水路入口、１０e…水路出口   DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Turbine, 3 ... Partition, 4 ... Shaft part integral with compressor impeller, 5 ... Shaft part integral with turbine rotor, 6 ... Shaft member, 7 ... Bearing, 8 ... Air passage, 9 ... Air gap, 10 ... water channel, 10i ... water channel inlet, 10e ... water channel outlet

Claims (1)

圧縮機とタービンとが互に背中合わせに配置されたガスタービンにして、前記圧縮機と前記タービンの間に延在し且ガスタービンの回転軸を該圧縮機と該タービンの間にて支持する軸受を支持する隔壁を備え、該隔壁内には該隔壁を横切って前記タービンの側から前記圧縮機の側へ伝播する熱を途中で吸収する冷却水を通すと共に前記軸受に対しても冷却作用を及ぼす水路が設けられていることを特徴とするガスタービン。   A gas turbine in which a compressor and a turbine are arranged back to back, and a bearing that extends between the compressor and the turbine and supports a rotating shaft of the gas turbine between the compressor and the turbine And a cooling water that absorbs the heat that propagates from the turbine side to the compressor side across the partition wall and that also cools the bearing. A gas turbine characterized in that a water channel is provided.
JP2015097014A 2015-05-12 2015-05-12 Gas turbine with water-cooled bulkhead Pending JP2016211467A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58124602U (en) * 1982-02-18 1983-08-24 三菱自動車工業株式会社 Turbo supercharger cooling system
JPS6147435U (en) * 1984-09-03 1986-03-29 石川島播磨重工業株式会社 Turbocharger bearing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58124602U (en) * 1982-02-18 1983-08-24 三菱自動車工業株式会社 Turbo supercharger cooling system
JPS6147435U (en) * 1984-09-03 1986-03-29 石川島播磨重工業株式会社 Turbocharger bearing device

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