CN103993916A - Power turbine output shaft system - Google Patents
Power turbine output shaft system Download PDFInfo
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- CN103993916A CN103993916A CN201410174180.5A CN201410174180A CN103993916A CN 103993916 A CN103993916 A CN 103993916A CN 201410174180 A CN201410174180 A CN 201410174180A CN 103993916 A CN103993916 A CN 103993916A
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- rolling bearing
- bearing
- oil
- turbine
- output shaft
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Abstract
The invention discloses a power turbine output shaft system. A floating bearing and a double-parallel rolling bearing are arranged on a turbine shaft and sleeved with a middle body, a back plate is fixed to the portion, located on the motor side, of one end face of the middle body, a bearing end cover is installed between the back plate and the middle body, a closed air chamber is formed by the back plate, a flange of a motor shell and a sleeve through end face matching, a main oil way and a double-parallel rolling bearing lubricating oil way which is communicated with the main oil way are formed in the middle body, a floating bearing lubricating oil way is communicated with the double-parallel rolling bearing lubricating oil way, a rolling bearing lubricating oil way communicated with the double-parallel rolling bearing lubricating oil way is formed in the bearing end cover, lubricating oil is led from the engine side to the end face of an engine side rolling bearing through the rolling bearing lubricating oil way, and a plurality of cooling fins are arranged on the turbine side of the back plate. By means of the power turbine output shaft system, the bearings can be effectively lubricated, and meanwhile the lubricating oil can be prevented from leaking in the axial direction and thermal insulation can be effectively achieved.
Description
Technical field
The present invention relates to power turbine, relate generally to power turbine output shaft system.
Background technique
Using power turbine to reclaim thermal technology's machinery exhaust overbottom pressure energy is one of current method of improving system thermal efficiency of taking measures outward at machine.Take diesel engine as example, and it is to slattern by exhaust that the fuel oil energy that sprays into cylinder has 30% left and right, can use power turbine generation technology or power turbine machinery coupling technique that the energy Partial Conversion in used heat is become to electric energy or mechanical energy.The electric energy changing into can be incorporated to the electrical network of car load, meets the energy consumption demand of vehicle mounted electric annex; The mechanical coupling of power turbine is to be increased and to be turned round by reducing gear reduction of speed, then by power coupling to engine crankshaft or be used for driving the annexes such as water pump, fan.
The most close with power turbine on motor is turbosupercharger.Turbocharging technology progresses into vehicular engine field from aeroengine after the war one, has become one of standard configuration of modern diesel engines at present, all very ripe in principle, hardware, use.There are a lot of famous turbosupercharger MANUFACTURER to carry out design, manufacture and the coupling work of turbosupercharger for each large motor and main engine factory both at home and abroad.Turbosupercharger itself is very compact, an accurate equipment, and working environment is very harsh owing to being accompanied by the environment such as high temperature, vibration.The rotating speed that is up to 200,000 rpms has all proposed stern challenge to the rotational stability under its manufacture, dynamic balancing and complex environment, lubricated, heat insulation etc.The technology for Turbocharger Manufacturing of current maturation is for these problems provide detailed reliable solution and accepted the test of actual use.And power turbine is as a kind of relatively new technology, due to the difference of its major function and object, at aspects such as design, uses, also there is being different from the feature of conventional turbine pressurized machine.
Power turbine output shaft end need to connect high-speed engine or be high deceleration Xiang Deng mechanism, not far just adjacent with the bearing of driven-mechanism with axle head distance, the thermal radiation that hot fluid working medium in turbine case produces and the conduction of heat vertically can produce to the bearing of driven member power input shaft end the thermal effect of annex, the thermal effect of these annexes is outside the heat load of considering when driven member designs, from the extra heat load of turbo machine, can cause the inefficacy of these bearings, experiment safety and system cost are brought to huge problem and loss.The difference that power turbine is compared turbosupercharger maximum is that the load of turbo machine is different, charger turbine load is gas compressor, and the load of power turbine can be high-speed engine or reducing gear (as high deceleration case), it is larger that gas compressor rotary inertia is compared in these loads, and driven member in the course of the work axle system can be flexible vertically, and bearing is produced to certain axial and radial force.In addition, traditional turbosupercharger is provided with corresponding oil sealing in order to prevent the lubricant oil oil of altering vertically, and turbosupercharger generally there will not be axially alter oil another major reason be the balance of whirlpool end and pressure side gas pressure.The air pressure balance at two ends has effectively prevented lubricant oil play vertically.But in power turbine system, because its output shaft end does not exist the fluid with pressure, and be directly atmospheric pressure.The pressure imbalance at lubricant oil two ends is easy to cause lubricant oil along axially oozing out pto＝power take-off end.The leakage of lubricant oil not only can cause the minimizing gradually of lubricants capacity, and the lubricant oil of leakage waits and also can cause very large hidden danger the safety of experimental system.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, providing a kind of can carry out effectively lubricating to bearing, can prevent that lubricant oil from revealing vertically and effectively heat insulation power turbine output shaft system simultaneously.
A kind of power turbine output shaft of the present invention is, it comprises two rolling bearings side by side of the output shaft end that is arranged on the floating bearing at turbine shaft turbine end place and is arranged on turbine shaft, at described floating bearing and two rolling bearing overcoat side by side, there is intermediate, be sleeved on that the backboard at output shaft end place of turbine shaft is close-fitting to be fixed on the end face that intermediate is positioned at motor side, fixing two side by side bearing (ball) cover that rolling bearing is used is arranged between backboard and intermediate, the sleeve of two ends band positioning spigot is installed between backboard flange and the flange of electric machine casing, backboard flange, the flange of electric machine casing and sleeve are coordinated and are formed an airtight air chamber by end face, a mechanical bleed valve is installed in the lower end of air chamber, described air chamber is connected with source of the gas, on described intermediate, have and the main oil gallery being connected for oil circuit, the return opening being connected with return tube and the two rolling bearing lubrication oil ducts side by side that are connected with main oil gallery, two rolling bearing lubrication oil ducts arranged side by side directly lead to two rolling bearings side by side near the rolling bearing of turbine pusher side by lubricated branch road oil duct, floating bearing oil leab be connected with two rolling bearing lubrication oil ducts side by side and export directly lead to floating bearing lubricating oil inlet to lubricate, on described bearing (ball) cover, having the lubricant oil being communicated with two rolling bearing lubrication oil ducts arranged side by side enters oilhole and enters with lubricant oil the rolling bearing lubrication oil duct that oilhole is communicated with, the generator side roll bearing face of rolling bearing lubrication oil duct from generating pusher side guiding lubricant oil to two rolling bearings arranged side by side, on backboard turbine pusher side, be provided with a plurality of radiating fins.
Advantage of the present invention:
(1) two rolling bearings side by side of clutch end can guarantee the relatively large generator loading steady running of rotary inertia of its connection, have stronger load capacity.The floating bearing of impeller end can be taken away the waste-gas heat in volute with larger lubricants capacity.Play the effect of the heat insulation effective barrier of first.
(2) design of asymmetric oil leab, honours the demand of lubricants capacity according to disalignment, taken into full account especially the cooling action of lubricant oil except lubricated, at floating bearing place, is lubricated and takes away most heat simultaneously.
(3) radiating fin dispelling the heat on reinforced backboard can further will fall from the heat dissipation that turbine end heat is conducted and thermal radiation brings.Reduce the waiting time of heat on power turbine casing as far as possible, reduce the heat load of bearing, the hot safety of assurance system.
(4) between generator and power turbine, the design of air chamber can ingeniously utilize the pressurized air of motor air pump, while is in conjunction with the use of mechanical bleed valve, maintain the certain pressure of clutch end, effectively prevent that the lube shaft causing due to pressure reduction is to leakage, reduce lubricating oil consumption.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that a kind of power turbine output shaft of the present invention is;
Fig. 2 a is the side view of the reinforced backboard of heat radiation in the structure shown in Fig. 1 of the present invention;
Fig. 2 b is the front view of the backboard shown in 2a;
Fig. 2 c is that the backboard A-A shown in 2a is to sectional view;
Fig. 3 a is the plan view of the bearing (ball) cover with oil leab in the structure shown in Fig. 1 of the present invention;
Fig. 3 b is the A-A sectional view of the bearing (ball) cover shown in Fig. 3 a.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of power turbine output shaft of the present invention is as shown in drawings, it comprises two rolling bearings 1 side by side of the output shaft end that is arranged on the floating bearing 6 at turbine shaft turbine end place and is arranged on turbine shaft, at described floating bearing 6 and two rolling bearing 1 overcoat side by side, there is intermediate 3, be sleeved on that the backboard 16 at output shaft end place of turbine shaft is close-fitting to be fixed on the end face that intermediate 3 is positioned at motor side, fixing two bearing (ball) cover 11 of rolling bearing 1 use is side by side arranged between backboard and intermediate, the sleeve 18 of two ends band positioning spigot is installed between backboard flange and the flange 22 of electric machine casing 10, backboard flange, the flange of electric machine casing and sleeve are coordinated and are formed an airtight air chamber by end face, a mechanical bleed valve 19 is installed in the lower end of air chamber, described air chamber is connected with source of the gas, on described intermediate 3, have and the main oil gallery 4 being connected for oil circuit, the return opening 9 being connected with return tube and the two rolling bearing lubrication oil ducts 2 side by side that are connected with main oil gallery 4, two rolling bearing lubrication oil ducts 2 arranged side by side directly lead to two rolling bearings side by side near the rolling bearing of turbine pusher side by lubricated branch road oil duct, floating bearing oil leab 5 be connected with two rolling bearing lubrication oil ducts 2 side by side and export directly lead to floating bearing 6 lubricating oil inlet to lubricate, on described bearing (ball) cover, having the lubricant oil being communicated with two rolling bearing lubrication oil ducts 2 arranged side by side enters oilhole 27 and enters with lubricant oil the rolling bearing lubrication oil duct 15 that oilhole 27 is communicated with, the generator side roll bearing face of rolling bearing lubrication oil duct from generating pusher side guiding lubricant oil to two rolling bearings 1 arranged side by side, on backboard turbine pusher side, be provided with a plurality of radiating fins 14.The opening that bearing (ball) cover is opened rolling bearing lubrication oil duct can be provided with plug, and plug construction bolt hole 30, for plug is installed, is used for preventing that lubricant oil from outwards overflowing from oil leab.In figure, 7 is impeller, and 8 is the floating bearing snap ring that fixedly floating bearing is used, and 13 is turbo machine axle head spline, and 20 is generator axle head spline, 21 coupling of answering for connecting turbo machine axle head spline and generator axle head spline.
Air chamber is used for preventing that lubricant oil is vertically because pressure imbalance causes revealing, and the source of the gas of preferred air chamber can come from the air pump 17 that motor carries.Motor is air pump work in running, and high-pressure air enters into air chamber and maintains indoor certain pressure.The effect of machinery bleed valve 19 is that to maintain room pressure certain, and when overpressure, valve spring is compressed, and valve is opened automatically, and gas pressure reduces.When being reduced to prescribed threshold, spring deformation recovers, valve closing.So maintain air chamber defined gas pressure.Pressure balance in room pressure and intermediate, prevents that lubricant oil from revealing vertically.
Preferred floating bearing oil leab diameter is larger, and floating bearing oil leab 5 diameters are 3mm-5mm.Guarantee can set up and prevent that the oil film of dry friction from appearring in bearing in the time of the running of axle system, utilize larger flow of lubrication to take away the heat that in spiral case, waste gas passes over simultaneously.For rolling bearing, adopt relatively thin fuel feeding oil duct, two rolling bearing lubrication oil duct 2 diameters arranged side by side are 2mm-3mm.Also the frictional loss that will avoid lubricant oil too much to bring when meeting rolling bearing lubrication demand.
As preferred embodiment of the present invention, on the junction surface of described bearing (ball) cover and intermediate, along even circumferential 3 positioning boss 29 that distribute, on the junction surface of described intermediate and bearing (ball) cover, be provided with the positioning hole coordinating with positioning boss.Can guarantee that like this lubricant oil enters oilhole 27 and keeps relative position relation with the two rolling bearing lubrication oil ducts side by side 2 on intermediate.
Preferably, the radiating fin thickness on backboard turbine pusher side is 1mm, on backboard with 2 ° uniformly at intervals, amount to 180.After backboard installation, fin can will pass to backboard and the turbine pusher side heat loss due to radiant heat transfer in ambient atmosphere effectively.
Larger for power turbine institute bringing onto load rotary inertia in apparatus of the present invention, and the axial and radial expansion problem that exists axle to be in operation process, adopted turbine end to use floating bearing, output shaft end is used the distribution forms of two rolling bearings arranged side by side.Adopt the benefit of this layout to be, the floating bearing of the first turbine end is in order to maintain lubricant film, need relatively large lubricants capacity, more flow of lubrication can be taken away waste gas heat conduction and thermal radiation vertically, after traditional thermal baffle, the effective barrier of second that anti-locking system heat load is excessive.Two rolling bearings arranged side by side are arranged in output shaft end, can guarantee the load capacity of power turbine shaft, and can in High Rotation Speed, keep rotational stability.In addition, rolling bearing can bear certain axially and radial force, can tolerate vertically and radially flexible of axle system in certain limit.
For the special circumstances of power turbine bearing and radiating requirements, for power turbine has designed the asymmetric oil leab that is different from conventional turbine pressurized machine.So-called asymmetric oil duct refers to for floating bearing and still adopts traditional oil duct layout type, and for two rolling bearings arranged side by side, in order to guarantee the effectively lubricating near backboard side roll bearing, is provided with oil leab on bearing cap.This oil duct is connected with the oil leab on intermediate, and lubricant oil can be lubricated rolling bearing from backboard side by the oil leab on bearing cap.For the rolling bearing near turbine pusher side, the oil leab of processing on intermediate can directly be lubricated it.In addition, for floating bearing, adopt thicker fuel feeding oil duct, guarantee can set up and prevent that the oil film of dry friction from appearring in bearing in the time of the running of axle system, utilize larger flow of lubrication to take away the heat that in spiral case, waste gas passes over simultaneously.For rolling bearing, adopt relatively thin fuel feeding oil duct, the frictional loss that also will avoid lubricant oil too much to bring when meeting rolling bearing lubrication demand.
In order to prevent that the high temperature heat source of turbine end from can have influence on the bearing of high-speed engine axle head by reasons such as axial heat conduction and thermal radiation, causes bearing cisco unity malfunction under hot environment.The backboard of power turbine has been carried out to design again.Traditional turbosupercharger backboard is to be used for installing compressor housings, need to have very high intensity to bear the weight of compressor housings and use the design of stiffening rib.Herein, power turbine backboard no longer needs to install compressor housings, and its requirement of strength is reduced, and can on backboard, design the function that more radiating fin is strengthened its heat radiation.Designed radiating fin thickness is 1mm, and along the circumferential direction often angle a slice is carried out layout twice.
Conventional turbine pressurized machine is because gas compressor and turbine end all exist gas pressure, can be to a certain extent pressure balance by two ends suppress lubricant oil leakage vertically.The clutch end of power turbine is to be connected with generator or reduction gears mechanism, therefore can not prevent by pressure balance the axial leakage of lubricant oil.For this reason, between power turbine backboard and high-speed electric expreess locomotive, by the flanged (FLGD) sleeve in two ends, by end face, coordinate and form an airtight air chamber.Can use the air pump of motor as the source of the gas of this air chamber, in the lower end of air chamber, a mechanical bleed valve is installed.When air chamber gas pressure surpasses setting value, valve is opened, and maintains room pressure certain.
The present invention is a kind of axle system of power turbine, comprise the two rolling bearings side by side of clutch end, the distribution form of impeller end floating bearing, takes into full account asymmetric oil leab lubricated and radiating requirements, and reinforced backboard and prevent that lube shaft is to the air chamber of revealing dispels the heat.For the axle system of power turbine system supports, lubricated, cooling, heat insulation, lubricant oil leakproof problem provides a kind of reliable technological scheme.
Claims (5)
1. a power turbine output shaft is, it is characterized in that: it comprises two rolling bearings side by side of the output shaft end that is arranged on the floating bearing at turbine shaft turbine end place and is arranged on turbine shaft, at described floating bearing and two rolling bearing overcoat side by side, there is intermediate, be sleeved on that the backboard at output shaft end place of turbine shaft is close-fitting to be fixed on the end face that intermediate is positioned at motor side, fixing two side by side bearing (ball) cover that rolling bearing is used is arranged between backboard and intermediate, the sleeve of two ends band positioning spigot is installed between backboard flange and the flange of electric machine casing, backboard flange, the flange of electric machine casing and sleeve are coordinated and are formed an airtight air chamber by end face, a mechanical bleed valve is installed in the lower end of air chamber, described air chamber is connected with source of the gas, on described intermediate, have and the main oil gallery being connected for oil circuit, the return opening being connected with return tube and the two rolling bearing lubrication oil ducts side by side that are connected with main oil gallery, two rolling bearing lubrication oil ducts arranged side by side directly lead to two rolling bearings side by side near the rolling bearing of turbine pusher side by lubricated branch road oil duct, floating bearing oil leab be connected with two rolling bearing lubrication oil ducts side by side and export directly lead to floating bearing lubricating oil inlet to lubricate, on described bearing (ball) cover, having the lubricant oil being communicated with two rolling bearing lubrication oil ducts arranged side by side enters oilhole and enters with lubricant oil the rolling bearing lubrication oil duct that oilhole is communicated with, the generator side roll bearing face of rolling bearing lubrication oil duct from generating pusher side guiding lubricant oil to two rolling bearings arranged side by side, on backboard turbine pusher side, be provided with a plurality of radiating fins.
2. power turbine output shaft according to claim 1 system, is characterized in that: the radiating fin thickness on backboard turbine pusher side is 1mm, on backboard with 2 ° uniformly at intervals.
3. power turbine output shaft according to claim 1 and 2 is, it is characterized in that: described floating bearing oil leab diameter is 3mm-5mm, and two rolling bearing lubrication oil duct diameters arranged side by side are 2mm-3mm.
4. power turbine output shaft according to claim 3 is, it is characterized in that: on the junction surface of described bearing (ball) cover and intermediate, along even circumferential 3 positioning boss that distribute, on the junction surface of described intermediate and bearing (ball) cover, be provided with the positioning hole coordinating with positioning boss.
5. power turbine output shaft according to claim 4 is, it is characterized in that: the source of the gas of air chamber comes from the air pump that motor carries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174180.5A CN103993916A (en) | 2014-04-28 | 2014-04-28 | Power turbine output shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174180.5A CN103993916A (en) | 2014-04-28 | 2014-04-28 | Power turbine output shaft system |
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| Publication Number | Publication Date |
|---|---|
| CN103993916A true CN103993916A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410174180.5A Pending CN103993916A (en) | 2014-04-28 | 2014-04-28 | Power turbine output shaft system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358619A (en) * | 2014-10-21 | 2015-02-18 | 罗显平 | Device for converting kinetic energy of waste gas of gas engine into output power |
| CN109441567A (en) * | 2019-01-02 | 2019-03-08 | 广西玉柴机器股份有限公司 | The output shafting of power turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5906098A (en) * | 1996-07-16 | 1999-05-25 | Turbodyne Systems, Inc. | Motor-generator assisted turbocharging systems for use with internal combustion engines and control method therefor |
| CN101202455A (en) * | 2006-12-15 | 2008-06-18 | 上海通运汽车科技有限公司 | Automobile back-up power apparatus |
| CN101413425A (en) * | 2008-11-17 | 2009-04-22 | 江阴市万事兴汽车部件制造有限公司 | Intermediate body assembly for turbocharger |
| CN201581983U (en) * | 2009-07-31 | 2010-09-15 | 芜湖杰锋汽车动力系统有限公司 | Generating system for exhaust-driven gas turbine of engine |
| CN103746493A (en) * | 2014-01-07 | 2014-04-23 | 天津大学 | Main shaft sealing device of high-speed turbine-generator applied to ORC (organic Rankine cycle) |
-
2014
- 2014-04-28 CN CN201410174180.5A patent/CN103993916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5906098A (en) * | 1996-07-16 | 1999-05-25 | Turbodyne Systems, Inc. | Motor-generator assisted turbocharging systems for use with internal combustion engines and control method therefor |
| CN101202455A (en) * | 2006-12-15 | 2008-06-18 | 上海通运汽车科技有限公司 | Automobile back-up power apparatus |
| CN101413425A (en) * | 2008-11-17 | 2009-04-22 | 江阴市万事兴汽车部件制造有限公司 | Intermediate body assembly for turbocharger |
| CN201581983U (en) * | 2009-07-31 | 2010-09-15 | 芜湖杰锋汽车动力系统有限公司 | Generating system for exhaust-driven gas turbine of engine |
| CN103746493A (en) * | 2014-01-07 | 2014-04-23 | 天津大学 | Main shaft sealing device of high-speed turbine-generator applied to ORC (organic Rankine cycle) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358619A (en) * | 2014-10-21 | 2015-02-18 | 罗显平 | Device for converting kinetic energy of waste gas of gas engine into output power |
| CN109441567A (en) * | 2019-01-02 | 2019-03-08 | 广西玉柴机器股份有限公司 | The output shafting of power turbine |
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Application publication date: 20140820 |