CN103671222A - Power-driven gas compressor of novel structure - Google Patents

Power-driven gas compressor of novel structure Download PDF

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Publication number
CN103671222A
CN103671222A CN201310687861.7A CN201310687861A CN103671222A CN 103671222 A CN103671222 A CN 103671222A CN 201310687861 A CN201310687861 A CN 201310687861A CN 103671222 A CN103671222 A CN 103671222A
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CN
China
Prior art keywords
power
rotor
bearing
gas compressor
driven
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
Application number
CN201310687861.7A
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Chinese (zh)
Inventor
陆育良
胡积友
梁波
孙俊
沈进军
王峰
张皎
罗欣洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jincheng Nanjing Electromechanical Hydraulic Pressure Engineering Research Center Aviation Industry Corp of China
AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
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AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
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Publication date
Application filed by AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems filed Critical AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority to CN201310687861.7A priority Critical patent/CN103671222A/en
Publication of CN103671222A publication Critical patent/CN103671222A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a power-driven gas compressor of a novel structure. The power-driven gas compressor serves as an important component of a power-driven environment control system, and is an indispensable core product of the power-driven environment control system applied to future all-electric aircrafts. A rotor system of a civil power-driven gas compressor is commonly supported with a ball bearing, and the power-driven gas compressor supported with the ball bearing needs a special oil supply structure to guarantee lubrication and cooling of lubricating oil to a bearing, so that the power-driven gas compressor is complex in structure, large in weight and poor in ball bearing reliability at the high rotation speed, and the requirements of the power-driven environment control system are difficultly met by the power-driven gas compressor of a traditional structure. According to the power-driven gas compressor of the novel structure, the rotor system is supported with an air bearing support. The power-driven gas compressor has the advantages of being simple in structure, high in reliability, good in high-temperature high-speed performance and the like, a two-stage compression structural mode is further adopted for the gas compressor, the high supercharging ratio can be obtained on the premise that the compact structures of products are guaranteed, and the compact, efficient and weight-reduction requirements and the like of the power-driven environment control system are accordingly met.

Description

A kind of dynamoelectric compressor of new structure
Technical field
Dynamoelectric compressor is the vitals of electronic environmental control system, is that following electric aircraft uses the indispensable core product of electronic environmental control system.
Background technique
Adopt dynamoelectric compressor more more effective than traditional bleed air system: it need not cancel the bleed air system of environmental control system from motor extracting energy, needn't carry out pre-cold-peace pressure adjusting and cause energy dissipation, improved the fuel penalty of motor; Pressurized gas is provided by required pressure by the dynamoelectric compressor of variable-speed, has reduced the compensatory loss of performance of aircraft, realizes the optiumum control of environmental control system operation.Meanwhile, contribute to the compactness of environmental control system, efficient and weight reduction, become one of development trend of full electricity/how electric aircraft environmental control system.
Dynamoelectric compressor does not also start application on military aircraft, rotor-support-foundation system on civilian use electric gas compressor generally adopts ball bearing to support, adopt the dynamoelectric compressor that ball bearing supports to need special oil supply structure to guarantee the lubrication and cooling of lubricant oil to bearing, so its complicated structure, and weight is larger, under high rotating speed, the reliability of ball bearing is poor, so the dynamoelectric compressor of conventional construction is difficult to meet the needs of electronic environmental control system.
The invention discloses a kind of dynamoelectric compressor of new structure, on rotor-support-foundation system, adopted air bearings support, there is the advantages such as simple in structure, reliability is high, high temperature and high speed performance is good, this gas compressor also adopts the structural type of two-stage compression, can guarantee under the prerequisite of product with compact structure, to obtain higher pressure ratio, thereby meet the requirements such as compact, the efficient and loss of weight of electronic environmental control system.
Summary of the invention
Object of the present invention: the dynamoelectric compressor that designs a kind of high supercharging pressure level, high efficiency, high reliability
Technological scheme of the present invention:
A dynamoelectric compressor for new structure, comprises rotor-support-foundation system, spiral case, electric machine casing, dividing plate, and wherein, rotor-support-foundation system comprises one-level impeller 18, sencond stage impeller 3, left nut 2, right nut 19, minor axis 16, major axis 6, jack shaft 11, rotor; Rotor comprises magnet ring 12 and protecting jacket 13.
Wherein, one-level impeller 18, sencond stage impeller 3 lay respectively at rotor two ends, and one-level impeller 18 is fixed on jack shaft 11 right-hand members by right nut 19 and minor axis 16, and sencond stage impeller 3 is fixed on jack shaft 11 left ends by left nut 2 and major axis 6; One-level spiral case 20, secondary spiral case 1 adopt integrated design with vane diffuser, radial bearing 9 has two groups of left and right, be arranged on respectively between major axis 6 and left clapboard 7 and between minor axis 16 and right clapboard 15, thrust bearing 5 is arranged between rotor left end major axis 6 and bearing support 4, left clapboard 7; Rotor and jack shaft 11 adopt integrated design; magnet ring 12 is pressed on jack shaft 11 by interference fit, and the outer protecting jacket 13 that has one deck titanium alloy of magnet ring 12, is characterized in that; rotor adopts air bearings support, and thrust bearing 5 and radial bearing 9 are pneumatic bearing.
Also comprise exhaust sealing ring 14 and bearing seal ring 17, exhaust sealing ring 14 is arranged on left clapboard 7 and right clapboard 15, bearing seal ring 17 is arranged on bearing support 4 and right clapboard 15, the required air of described thrust bearing 5 and radial bearing 9 work derives from the clearance leakage between impeller outlet and vane diffuser, and air mass flow can be by regulating the control of the radial clearance of 6 of exhaust sealing ring 14, bearing seal ring 17 and minor axis 16, major axis.
Beneficial effect of the present invention: the rotor-support-foundation system of the dynamoelectric compressor that the present invention is designed adopts air bearings support, pneumatic bearing does not need the necessary lubricant oil of conventional ball bearings, its work and lubricant medium are all air, so it can not produce any pollution to aircraft environmental control system, the advantage such as that pneumatic bearing also has is simple in structure, reliability is high, high temperature and high speed performance is good.The rotor of air bearings support adopts pull bar to add the structural type of sleeve, can greatly increase the critical speed of rotation of rotor-support-foundation system like this, thereby guarantee that gas compressor there will not be critical phenomenon in whole operating range, this has also improved the functional reliability of dynamoelectric compressor largely.Gas compressor adopts two stage compression, and I and II impeller lays respectively at rotor two ends, and this structure is relatively conducive to the balance of whole rotor-support-foundation system, also can guarantee under the prerequisite of its high supercharging pressure level, the assurance of larger limit the integrally-built compactedness of product.
Accompanying drawing explanation:
Fig. 1 is the two stage compression work schematic diagram of dynamoelectric compressor;
Wherein, 1-secondary spiral case, 3-sencond stage impeller, 18-one-level impeller, 20-one-level spiral case, 21-one-level compressor inlet, 22-one-level blower outlet, the import of 23-two-stage compressor, the outlet of 24-two-stage compressor.
Fig. 2 is the structural representation of dynamoelectric compressor rotor-support-foundation system;
Wherein, the left nut of 2-, 3-sencond stage impeller, 6-major axis, 11-axle, 12-magnet ring, 13-protecting jacket, 16-minor axis, 18-one-level impeller, the right nut of 19-.
Fig. 3 is the tap air channel of pneumatic bearing in dynamoelectric compressor;
Wherein, 5-thrust bearing, 9-radial bearing, 14-exhaust sealing ring, 17-bearing seal ring.
Fig. 4 is the structural representation of dynamoelectric compressor.
Wherein, 1-secondary spiral case, the left nut of 2-, 3-sencond stage impeller, 4-bearing support, 5-thrust bearing, 6-major axis, 7-left clapboard, 8-housing, 9-radial bearing, 10-motor stator, 11-axle, 12-magnet ring, 13-protecting jacket, 14-exhaust sealing ring, 15-right clapboard, 16-minor axis, 17-bearing seal ring, 18-one-level impeller, the right nut of 19-, 20-one-level spiral case.
Embodiment
Below in conjunction with Figure of description, the present invention is described in further detail.Refer to Figure of description 1~3.
The designed dynamoelectric compressor of the present invention adopts the structural type of two stage compression, its structural representation is shown in Fig. 1, first ram-air enters one-level compression process, and air obtains more pressure energy via one-level impeller 18, one-level Diffuser and one-level spiral case 20, and its temperature and pressure is all raise; From one-level spiral case 20 High Temperature High Pressure air out, through after radiator cooling, enter two-stage compression process, via sencond stage impeller 3, secondary Diffuser and secondary spiral case 1, the pressure of gas is further raise, to such an extent as to reaches the required state of environmental control system.According to current fighter plane electronic equipment increase, heat load, increase, the feature that environmental control system refrigeration demand amount is increased, the pressure ratio of centrifugal compressor and efficiency are had higher requirement, the gas compressor of two stage compression structure is just meeting this requirement, it can obtain than the higher pressure ratio of one-level compression, two stage compression structure can also can reduce largely the physical dimension of whole product when guaranteeing its high supercharging pressure level, makes that its weight is lighter, more compact structure.
The rotor-support-foundation system structural representation of the dynamoelectric compressor that the present invention is designed is shown in Fig. 2; one-level impeller 18, sencond stage impeller 3 lay respectively at rotor two ends; one-level impeller 18 is fixed on right-hand member by right nut 19 and minor axis 16; sencond stage impeller 3 is fixed on left end by left nut 2 and major axis 6; rotor and compressor rotor adopt integrated design; magnet ring 12 as rotor is pressed on jack shaft 11 by interference fit, and outside also has the protecting jacket 13 of one deck titanium alloy.The rotating shaft of air bearings support adopts pull bar to add the structural type of cannulated sleeve axle, can greatly increase the critical speed of rotation of rotor-support-foundation system like this, thereby guarantee that gas compressor there will not be critical phenomenon in whole operating range, this has also improved the functional reliability of dynamoelectric compressor largely.
Fig. 3 has provided the bleed structure of the pneumatic bearing in the designed dynamoelectric compressor of the present invention, thrust bearing 5 and radial bearing 9 are pneumatic bearing, the required air of its work derives from the clearance leakage between the vane diffuser on impeller outlet and spiral case, leakage air has elevated pressures, it is by bearing seal ring 17 and length, the gap of short sleeve between centers enters pneumatic bearing, finally again by exhaust sealing ring 14 and length, the lower electric machine casing inside of gap feed pressure of short sleeve between centers, external one of electric machine casing is the cooling fan assembly of motor, under the pumping action of fan, the air of electric machine casing inside is always in a low-pressure state, this has also guaranteed that the high-pressure air being leaked out by impeller outlet and vane diffuser can flow into electric machine casing via seal clearance continuously, thereby also guaranteed the continuity of pneumatic bearing tap air channel.The required air mass flow of pneumatic bearing can regulate by the control of the radial clearance between seal ring and quill, and this pneumatic bearing bleed mode does not increase extra bleed structure, thereby has guaranteed to large extent the compactedness of product structure.

Claims (2)

1. the dynamoelectric compressor of a new structure, comprise rotor-support-foundation system, spiral case, electric machine casing, dividing plate, wherein, rotor-support-foundation system comprises one-level impeller [18], sencond stage impeller [3], left nut [2], right nut [19], minor axis [16], major axis [6], jack shaft [11], rotor; Rotor comprises magnet ring [12] and protecting jacket [13],
Wherein, one-level impeller [18], sencond stage impeller [3] lay respectively at rotor two ends, one-level impeller [18] is fixed on jack shaft [11] right-hand member by right nut [19] and minor axis [16], and sencond stage impeller [3] is fixed on jack shaft [11] left end by left nut [2] and major axis [6]; One-level spiral case [20], secondary spiral case [1] adopt integrated design with vane diffuser, radial bearing [9] has two groups of left and right, be arranged on respectively between major axis [6] and left clapboard [7] and between minor axis [16] and right clapboard [15], thrust bearing [5] is arranged between rotor left end major axis [6] and bearing support [4], left clapboard [7]; Rotor and jack shaft [11] adopt integrated design; it is upper that magnet ring [12] is pressed in jack shaft [11] by interference fit, and the outer protecting jacket [13] that has one deck titanium alloy of magnet ring [12], is characterized in that; rotor adopts air bearings support, and thrust bearing [5] and radial bearing [9] are pneumatic bearing.
2. the dynamoelectric compressor of new structure according to claim 1, it is characterized in that, also comprise exhaust sealing ring [14] and bearing seal ring [17], exhaust sealing ring [14] is arranged on left clapboard [7] and right clapboard [15], bearing seal ring [17] is arranged on bearing support [4] and right clapboard [15], described thrust bearing [5] and radial bearing [9] the required air of working derives from the clearance leakage between impeller outlet and vane diffuser, air mass flow can be passed through exhaust sealing ring [14], bearing seal ring [17] and minor axis [16], the control of the radial clearance between major axis [6] regulates.
CN201310687861.7A 2013-12-13 2013-12-13 Power-driven gas compressor of novel structure Pending CN103671222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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CN103671222A true CN103671222A (en) 2014-03-26

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976146A (en) * 2015-06-19 2015-10-14 同济大学 Two-stage supercharging direct-drive air compressor for fuel cell engine
CN105889096A (en) * 2016-05-06 2016-08-24 同济大学 Two-stage series pressurization direct-driven centrifugal air compressor of fuel cell engine
CN106286338A (en) * 2015-06-02 2017-01-04 上海优耐特斯压缩机有限公司 The structure that the centrifugal compressor leakage air using high-speed electric expreess locomotive is cooled down
CN112503025A (en) * 2020-02-28 2021-03-16 长城汽车股份有限公司 Air compressor and vehicle
CN112901527A (en) * 2021-02-04 2021-06-04 广东智空动力科技有限公司 Air bearing compressor

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US3942908A (en) * 1974-05-03 1976-03-09 Norwalk-Turbo, Inc. Gas turbine driven high speed centrifugal compressor unit
CN87204726U (en) * 1987-10-30 1988-08-17 益阳县谢林机电配件厂 Dual-aperture integral body oil-retaining bearing
EP1217219A2 (en) * 2000-12-15 2002-06-26 Cooper Cameron Corporation Direct drive compressor assembly
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KR20090043161A (en) * 2007-10-29 2009-05-06 삼성테크윈 주식회사 Bearing system and the fabrication method of the same
CN102135104A (en) * 2011-04-22 2011-07-27 爱科腾博(大连)科技有限公司 Turbo compressor
CN103089405A (en) * 2013-01-09 2013-05-08 北京理工大学 Rotor clutch type motor-driven power generation turbocharger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942908A (en) * 1974-05-03 1976-03-09 Norwalk-Turbo, Inc. Gas turbine driven high speed centrifugal compressor unit
CN87204726U (en) * 1987-10-30 1988-08-17 益阳县谢林机电配件厂 Dual-aperture integral body oil-retaining bearing
EP1217219A2 (en) * 2000-12-15 2002-06-26 Cooper Cameron Corporation Direct drive compressor assembly
CN201062591Y (en) * 2007-02-09 2008-05-21 盐城双菊风机有限公司 Outer-rotor centrifugal fan axle bed
KR20090043161A (en) * 2007-10-29 2009-05-06 삼성테크윈 주식회사 Bearing system and the fabrication method of the same
CN102135104A (en) * 2011-04-22 2011-07-27 爱科腾博(大连)科技有限公司 Turbo compressor
CN103089405A (en) * 2013-01-09 2013-05-08 北京理工大学 Rotor clutch type motor-driven power generation turbocharger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286338A (en) * 2015-06-02 2017-01-04 上海优耐特斯压缩机有限公司 The structure that the centrifugal compressor leakage air using high-speed electric expreess locomotive is cooled down
CN104976146A (en) * 2015-06-19 2015-10-14 同济大学 Two-stage supercharging direct-drive air compressor for fuel cell engine
CN104976146B (en) * 2015-06-19 2017-09-26 同济大学 A kind of fuel battery engines directly drive air compressor with two-step supercharging
CN105889096A (en) * 2016-05-06 2016-08-24 同济大学 Two-stage series pressurization direct-driven centrifugal air compressor of fuel cell engine
CN105889096B (en) * 2016-05-06 2019-10-18 同济大学 The two-stage series connection pressurization of fuel battery engines is straight to drive centrifugal air compressor
CN112503025A (en) * 2020-02-28 2021-03-16 长城汽车股份有限公司 Air compressor and vehicle
CN112901527A (en) * 2021-02-04 2021-06-04 广东智空动力科技有限公司 Air bearing compressor

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Application publication date: 20140326