CN2253397Y

CN2253397Y - Vehicle turbosupercharger

Info

Publication number: CN2253397Y
Application number: CN 96231486
Authority: CN
Inventors: 费传华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-21
Filing date: 1996-03-21
Publication date: 1997-04-30
Anticipated expiration: 2006-03-21

Abstract

The utility model relates to a turbosupercharger which uses waste gas exhausted by an engine for pressurization. The utility model is characterized in that two turbines and two air compressor impellers are arranged on a rotary shaft, the turbines and the air compressor impellers are mutually matched and are installed at both ends of the rotary shaft, a thermal baffle is arranged between each pair of running wheels, an aperture of a larynx of each turbine air inlet casing is provided with a nozzle blade and an adjusting ring, two turbine air inlet casings and two air compressor casings are symmetrically arranged at both sides of a middle casing, and are connected in sequence. The utility model makes full use of pulse energy of waste gas which is exhausted by an engine, the arrangement of bearings is far from a high-temperature zone simultaneously, the defect of superheating of the bearings in operation is overcome, and the pressure adjustment of the pressurization is convenient and reliable.

Description

Vehicle turbocharger

The utility model relates to the vehicle turbocharger that a kind of waste gas that utilizes diesel engine or petrol engine to discharge carries out supercharging.

Existing all kinds of axial flow, radial-flow turbocharger, its air compressor wheel and turbine all respectively are one, and air compressor wheel and turbine are loaded in the rotating shaft, install rotating shaft bearing be furnished with four kinds of forms: one, external support-two bearing is positioned at the two ends of rotating shaft; Two, internal support-two bearing is between two active wheels; Three, interior external support-two bearings is arranged between an end and two active wheels of rotating shaft; Four, cantilever support-two active wheel is made one, and the rotating shaft cantilever support is on two bearings.Plant in the setting type of bearing at first three, a bearing is arranged near turbine, bearing is heated greatlyyer in the running, influences bearing working.For the 4th kind of bearing setting type, though bearing is far away from turbine, bearing is heated less, and the cantilever force of rotating shaft makes the stable bad of rotating shaft apart from big, and in addition, the mechanism of the air displacement size of its adjusting gas inlet housing of the pressurized machine of above-mentioned various structures is complicated.Also have the deficiency that interruption air feed and air displacement overlap each other simultaneously.

The purpose of this utility model is to provide a kind of vehicle turbocharger rational in infrastructure, and it makes bearing far away from the high-temperature zone, and it is bigger to avoid bearing to be heated, and its air displacement size of regulating gas inlet housing is convenient and reliable.

The purpose of the utility model is realized by following technological scheme:

This vehicle turbocharger, by gas inlet housing 1, turbine 5, compressor casing 12, compositions such as compressor impeller 11 and intermediate casing 15 and rotating shaft 20, turbine 5 and compressor impeller 11 lay respectively in gas inlet housing 1 and the compressor casing 12 and all are loaded in the rotating shaft 20, rotating shaft 20 is loaded on the bearing support 16 that is connected in the intermediate casing 15 by bearing 25, turbine 5 and the compressor impeller 11 be located in the rotating shaft 20 respectively are two, the sense of rotation of two turbines 5 and two compressor impellers 11 is opposite, turbine 5 and compressor impeller 11 pairings are loaded on the two ends of rotating shaft 20, and turbine 5 is positioned at the outside, two gas inlet housings 1 and compressor casing 12 are arranged symmetrically in the both sides of intermediate casing 15 and join successively, 11 of turbine 5 and compressor impellers are separated with thermal baffle 8, the middle part of thermal baffle 8 is embedded with an interstage sleeve 10, interstage sleeve 10 is loaded in the rotating shaft 20, the two ends of interstage sleeve 10 and turbine 5 and compressor impeller 11 are close to, be positioned at thermal baffle 8 on the side of gas inlet housing 1 and be installed with along the uniform nozzle vane 7 of the annular aditus laryngis of gas inlet housing 1, the aditus laryngis place of gas inlet housing 1 also is provided with regulating ring 6, regulating ring 6 places in the circular groove 1a on the gas inlet housing 1 aditus laryngis place shell wall, extension bar 2 passes gas inlet housing 1 and joins with regulating ring 6, radially have groove 2a on the extension bar 2, be installed with wedge-shaped blocks 3 in the groove 2a, spring 4 is connected on extension bar 2 and the gas inlet housing 1, at the two ends of bearing support 16 end cap 13 is housed, has suction port 15b on the intermediate casing 15.

The utility model is specially adapted to the supercharging of six cylinder engine, the waste gas that this vehicle turbocharger is discharged six pulse shape motors is divided equally to two gas inlet housings and is carried out exhaust, in each gas inlet housing, form three pulse exhaust forms, promptly overcome the deficiency that interruption air feed and exhaust overlap each other, utilized the pulse energy of the waste gas of each cylinder discharge of motor again fully.Simultaneously, the setting of gas inlet housing aditus laryngis place regulating ring can move regulating ring by regulating extension bar, in the control gas inlet housing exhaust flow through the speed at aditus laryngis place, and then control boost pressure.And owing to adopted the active wheel of two groups of symmetric arrangement, so can make bearing far away from turbine when the bearing of rotating shaft is set, the thermal baffle that is provided with between two active wheels has avoided bearing to be heated than the deficiency that influences bearing working greatly in addition.

Description of drawings:

Fig. 1 is the utility model one embodiment's a structural drawing;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the I portion enlarged view of Fig. 1;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the setting type figure of thermal baffle top nozzle blade.

Below in conjunction with drawings and Examples the utility model is further specified.

As shown in Figure 1, the gas inlet housing 1 of this turbosupercharger and the structure of compressor casing 12 are with existing known identical, and gas inlet housing 1 adopts 360 ° of intake types of single channel, and gas inlet housing 1 adopts V-

type shroud ring

9,22 to be connected with 12 of compressor casings and compressor casing 12 respectively with 15 of intermediate casings.Two turbines 5 are the runoff radial inflow, and two compressor impellers 11 are centrifugal for sweepback, and the sense of rotation of the sense of rotation of two turbines 1 and two compressor impellers 11 is opposite.The thermal baffle 8 that turbine 6 and compressor impeller are 11 adopts engineering plastics.Thermal baffle 8 is an one with nozzle vane 7 on it, the thickness of nozzle vane 7 be gas inlet housing 1 the aditus laryngis width 2/5, the setting type of being located at the nozzle vane 7 on the thermal baffle 8 is as shown in Figure 5.End cap 13 adopts screw 17 to be connected with 16 of bearing supports.25 of two bearings are separated with the axle sleeve 18 that is enclosed within the rotating

shaft

20,25 of two bearings also are equipped with preloading spring 14, pass in rotating shaft 20 on the section of stretching out of bearing 25 seal ring seat 26 is housed, seal ring seat 26 be provided be flabellum shape get rid of tank deck rank 24 and two sealed step 26a, between end cap 13 and two sealed step 26a, be provided with seal ring 23, be drilled with oil inlet hole 13a on the end cap 13, oil inlet hole 13a leads to sealed step 26a and gets rid of the space of 24 formation in tank deck rank.Get rid of tank deck rank 24 and sealed step 26a and seal ring seat 26 on the seal ring seat 26 are one, and get rid of tank deck rank 24 and mill into flabellum shape, shown in Fig. 3,4.The lubricant oil that the time enters this space in work is got rid of to bearing 25 it is lubricated by the tank deck rank 24 of getting rid of of rotation.

The bearing 25 that is loaded on 20 of bearing support 16 and rotating shafts is three circle rolling bearings.The employing of three circle rolling bearings, the stability when having increased rotating shaft 20 high speed rotating.Below intermediate casing 15 and the bearing support 16 that is attached thereto, have spill port 15c.Be pressed with nut 21 on the turbine 6 at rotating shaft 20 two ends, be lined with pad 19 in seal ring seat 26 and 11 of compressor impellers.

As shown in Figure 2, the wedge-shaped blocks 3 in the action extension bar 2 can make the regulating ring 6 that is positioned at gas inlet housing 1 aditus laryngis place move.Wedge-shaped blocks 3 can be linked to each other with the chock plate tie rod of automobile, by in driving, handling chock plate tie rod action wedge-shaped blocks 3.When regulating ring 6 when thermal baffle 7 directions move, the exhaust passage section of gas inlet housing 1 aditus laryngis is reduced, herein exhaust velocity increases, and then the speed of rotating shaft is improved, boost pressure improves.Otherwise the passage section at aditus laryngis place increases, and exhaust velocity is with low, and boost pressure reduces.Can regulate the boost pressure of this pressurized machine as required.

Claims

1, a kind of vehicle turbocharger, by gas inlet housing (1), turbine (5), compressor casing (12), compressor impeller (11) and intermediate casing (15) and rotating shaft compositions such as (20), turbine (5) and compressor impeller (11) lay respectively in gas inlet housing (1) and the compressor casing (12) and all are loaded in the rotating shaft (20), rotating shaft (20) is loaded on the bearing support (16) that is connected in the intermediate casing (15) by bearing (25), it is characterized in that: turbine (5) and the compressor impeller (11) be located in the rotating shaft (20) respectively are two, the sense of rotation of two turbines (5) and two compressor impellers (11) is opposite, turbine (5) and compressor impeller (11) pairing are loaded on the two ends of rotating shaft (20), and turbine (5) is positioned at the outside, two gas inlet housings (1) and compressor casing (12) are arranged symmetrically in the both sides of intermediate casing (15) and join successively, be separated with thermal baffle (8) between turbine (5) and compressor impeller (11), the middle part of thermal baffle (8) is embedded with an interstage sleeve (10), interstage sleeve (10) is loaded in the rotating shaft (20), the two ends of interstage sleeve (10) and turbine (5) and compressor impeller (11) are close to, be positioned at thermal baffle (8) on the side of gas inlet housing (1) and be installed with along the uniform nozzle vane (7) of the annular aditus laryngis of gas inlet housing (1), the aditus laryngis place of gas inlet housing (1) also is provided with regulating ring (6), regulating ring (6) places in the circular groove (1a) on gas inlet housing (1) the aditus laryngis place shell wall, extension bar (2) passes gas inlet housing (1) and joins with regulating ring (6), radially have groove (2a) on the extension bar (2), be installed with wedge-shaped blocks (3) in the groove (2a), spring (4) is connected on extension bar (2) and the gas inlet housing (1), at the two ends of bearing support (16) end cap (13) is housed, has suction port (15b) on the intermediate casing (15).

2, vehicle turbocharger according to claim 1, it is characterized in that: the section of stretching out of passing bearing (25) in rotating shaft (20) is with seal ring seat (26), seal ring seat (26) be provided be flabellum shape get rid of tank deck rank (24) and two sealed step (26a), between end cap (13) and two sealed step (26a), be provided with seal ring (23), be drilled with oil inlet hole (13a) on the end cap (13), oil inlet hole (13a) leads to sealed step (26a) and gets rid of the space that forms between tank deck rank (24).

3, vehicle turbocharger according to claim 1 is characterized in that: the bearing (25) that is loaded between bearing support (16) and rotating shaft (20) is three circle rolling bearings.

4, vehicle turbocharger according to claim 1 is characterized in that: the below at intermediate casing (15) and the bearing support (16) that is attached thereto has spill port (15c).