CN201236724Y

CN201236724Y - Light titanium alloy turbosupercharger

Info

Publication number: CN201236724Y
Application number: CNU200820014069XU
Authority: CN
Inventors: 刘天成
Original assignee: FENGCHENG TAIPINGYANG SHENLONG TURBOCHARGER Co Ltd
Current assignee: FENGCHENG TAIPINGYANG SHENLONG TURBOCHARGER Co Ltd
Priority date: 2008-07-17
Filing date: 2008-07-17
Publication date: 2009-05-13
Anticipated expiration: 2018-07-17

Abstract

The utility model provides a light titanium alloy turbocharger, which comprises a turbine, an intermediate and an air compressor, wherein, a spiral case is made of light titanium alloy; a turbine is welded at the front end of a wheel shaft; a shaft diameter and an axle distance are required to be redesigned, friction is needed to be reduced, and the flexibility of a wheel shaft is required to be improved in order to enable the wheel shaft and the turbine operate normally in a matching manner as the weight of the turbine changes; a flexible friction resistance point is arranged at the middle part of the wheel shaft; the intermediate is fixedly connected with the spiral case through a bolt; two non-locating bearings are arranged at the middle part of the wheel shaft, positioned at the two ends of the intermediate, and embedded in the bearing support hole of the intermediate; and an air compressor casing is fixedly connected with the intermediate through a bolt. The turbocharger has the advantages that the design is scientific as the flexible friction resistance point is well arranged on the wheel shaft; the low-speed performance respond is quick; the inert mass is small; the service life is long; and the like. The turbocharger further has the advantages that the overall efficiency is high; the practicability is stronger; imported superchargers are replaced; the overall structure is compact; the material consumption is low; the cost is low; the performance is steady; and the maintenance is convenient, therefore, the turbocharger is suitable for being used with an engine.

Description

A kind of light titanium alloy turbocharger

Technical field

The utility model relates to pressurized machine, concrete is, and turbine and wheel shaft adopt light titanium alloy to make, a kind of dynamical turbosupercharger that still can stable operation under High Temperature High Pressure and environment mal-condition.

Background technique

Science and technology development has greatly promoted the development and the raising of motor industry, and the pressurized machine that also making accordingly matches with motor uses also constantly upgrades and developed faster.Though the air intake pressurized of motor is a mature technique comparatively, the kind of pressurized machine also is varied, yet under the condition of concrete environment and use, sometimes the work that pressurized machine can not be reliable and stable, so that can not be in best working state, the pressure ratio that often shows output power and required charge flow rate can not be synchronous, sometimes have to by strengthening fuel feeding and strengthening the rotating speed that discharge capacity increases pressurized machine for the pressure ratio traffic requirement that satisfies lower-speed state, in order to improve air inflow and suction pressure, yet limitation because of turbine commentaries on classics amount and material, wanting speedup neither lead-pipe cinch, the operating temperature of adding booster turbine can reach 500-950 degree, and this not general again material can bear.

General booster turbine weight is big, and the inertia that cause startup, rotates is big, thereby brings a series of problems, and is low such as low speed efficient, improves revolution difficulty etc.People make turbine with other material by every means, thereby eliminate existing shortcoming of general pressurized machine and deficiency, but, adopting light titanium alloy to make turbine certainly will differ widely with original weight, if still use original wheel shaft not to be complementary certainly, relate to the variation of two ends equinoctial point and the variation issue of surface friction drag, therefore, to do the calculating of the moment of abundant calculating and axle to axle system

The turbine that adopts light titanium alloy to make is worked abroad and is just got somewhere with the matter at present, though domestic proposing of having on using also do not implemented and solved some relevant technical problems.

Summary of the invention

There is the not enough problem that wheel shaft and turbine are not complementary that can occur when intending adopting New Type Material making turbine in the purpose of this utility model in order to solve at present to improving turbosupercharger, and provide the efficient height, turbine has adopted light titanium alloy to make to solve low speed response to reach the technical problem that turbine and wheel shaft are complementary soon, has a kind of light titanium alloy turbocharger of advantage such as in light weight, that inertia is little, the life-span is long.

The technological scheme that adopts is:

A kind of light titanium alloy turbocharger comprises turbo machine, intermediate, gas compressor;

Described turbo machine comprises volute, turbine, wheel shaft; Turbine is welded on the front end of wheel shaft, is integral by being welded to connect, and at the rear portion of turbine one thermal baffle is set, and thermal baffle is between turbine and intermediate;

Described intermediate and volute are bolted to connection, the intermediate portion of wheel shaft is positioned at intermediate, the wheel shaft intermediate portion is provided with two floating bearings, two floating bearings are positioned at the two ends of intermediate, and be embedded in the bearing saddle bore of intermediate, a thrust bearing is installed at the middle part of wheel shaft, and thrust bearing is arranged in the thrust shaft block hole at the rear portion of intermediate;

Described gas compressor comprises casing, impeller and back plate; Casing and back plate are fastenedly connected by screw, and back plate and intermediate are fastenedly connected by screw, and impeller set is located at the rear end of wheel shaft and is fastenedly connected by screw; Its structure outline is:

Described turbine and blade adopt light titanium alloy to make, and light titanium alloy is a TiAl base alloy shaping material;

Described light titanium alloy turbine is because the variation of turbine weight, and the redesign diameter of axle, wheelbase are reduced friction and improved the flexibility of wheel shaft; Therefore at the wheel shaft middle part 1 flexible friction resistance point is set.

Above-mentioned flexible friction resistance point is an annular groove.

Working principle and characteristics:

The utility model turbosupercharger turbosupercharger with general on structure, principle is identical substantially, maximum difference is: this turbocharger turbine and blade are selected high elastic modulus for use, and good high-temperature intensity, creep resistant and oxidation resistant light titanium alloy are made.Because of the weight of light titanium alloy turbine reduces to 1/3, thereby the inertia of turbine reduces widely, wheel shaft and turbine can appropriate coupling be operated, in advance go out flexible friction resistance point in the middle part of wheel shaft designing and calculating, the coupling that wheel shaft and turbine are good has improved the overall technology performance of pressurized machine, has saved the energy effectively, make equipment be in normal running state all the time simultaneously, also improved working life.Reduced the resistance of waste gas in volute flow passage of motor widely, increased the discharge value of gas, the power that is injected on the turbine bucket is increased greatly, make the displacement variation gas compressor thereupon fast response of pressurized machine, thereby improved efficiency of turbocharger widely with motor.

The advantage of this turbosupercharger is:

1 selected for use in light weight, high-quality light titanium alloy with good high-temperature intensity, plasticity, creep resistant and anti-oxidation characteristics is manufactured turbine, again wheel shaft is carried out the designing and calculating diameter of axle and an axle square at the variation of turbine weight, set flexible friction resistance point, complete machine has the low-speed performance response soon, advantages such as inertia is little, and the life-span is long.

2, the turbine made of new material and with the wheel shaft precision height of its coupling, adopted advanced process equipment and accurate detection means to guarantee the machining high-precision of component.Strengthened dynamic balance accuracy, guaranteed that pressurized machine long-time continuous under high temperature and high pressure environment runs up, overall efficiency reaches 80%.

3, pressurized machine running steadily and has energy-conservationly, reduces the advantage of discharge of poisonous waste in the waste gas.

The not available advantages of common pressurized machine such as the utility model design science, the response of reasonable, original, low-speed performance are fast, and inertia is little, and the life-span is long.Improved the efficient of complete machine, reduced the discharging of engine exhaust, practicability is stronger, has replaced the inlet plenum device.Compact overall structure, consumptive material are few, with low cost, stable performance, reliable, easy to maintenance, the utility model suitable with the supporting use of motor.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is turbine of the present utility model and axle assembly structural representation.

Fig. 3 is A-A cross-sectional schematic of Fig. 2.

Embodiment

A kind of light titanium alloy turbocharger comprises turbo machine, intermediate 4, gas compressor.

Turbo machine comprise volute 1, turbine 2, wheel shaft 13; Turbine 2 adopts light titanium alloy to make with wheel shaft 13, and light titanium alloy is a TiAl base alloy shaping material.Turbine 2 is welded on the front end of wheel shaft 13, be integral by being welded to connect, light titanium alloy turbine 2 is because the variation of weight also will make wheel shaft 13 and turbine 2 appropriate coupling operate, need the redesign diameter of axle, wheelbase, reduce friction and improve the flexibility of wheel shaft; Therefore at wheel shaft 13 middle parts 1 flexible friction resistance point 14 is set, flexible friction resistance point 14 is to be provided with annular groove at the middle part of wheel shaft 13; One thermal baffle 3 is set at the rear portion of turbine 2, thermal baffle 3 is between turbine 2 and intermediate 4, intermediate 4 and volute 1 are fixedlyed connected by screw, the intermediate portion of wheel shaft 13 is positioned at intermediate 4, the intermediate portion of wheel shaft 13 is provided with 6, two floating bearings 6 of two floating bearings and is positioned at the two ends of intermediate 4, and is embedded in the bearing saddle bore 5 of intermediate 4, a thrust bearing 12 is installed at the middle part of wheel shaft 13, and thrust bearing 12 is arranged in the thrust shaft block hole 9 at the rear portion of intermediate 4; Thrust bearing 12 is replaced mutually with thrust ring 7.

Gas compressor comprises casing 8, impeller 15 and back plate 10; Casing 8 and back plate 10 are fastenedly connected by screw, and back plate 10 and intermediate 4 are fastenedly connected by screw, and impeller 15 is set on the rear end of wheel shaft 13 and is fastenedly connected by screw; Impeller 15 is positioned at the inside center place of casing 8; Be provided with seal ring and support 11 between back plate 10 and impeller 15, the top of seal ring support 11 is provided with seal ring.

Claims

1, a kind of light titanium alloy turbocharger comprises turbo machine, intermediate (4), gas compressor;

Described turbo machine comprises volute (1), turbine (2), wheel shaft (13); Turbine (2) is welded on the front end of wheel shaft (13), is integral by being welded to connect, and at the rear portion of turbine (2) thermal baffle (3) is set, and thermal baffle (3) is positioned between turbine (2) and the intermediate (4);

Described intermediate (4) is bolted to connection with volute (1), the intermediate portion of wheel shaft (13) is positioned at intermediate (4), the intermediate portion of wheel shaft (13) is provided with two floating bearings (6), two floating bearings (6) are positioned at the two ends of intermediate (4), and be embedded in the bearing saddle bore (5) of intermediate (4), a thrust bearing (12) is installed at the middle part of wheel shaft (13), and thrust bearing (12) is arranged in the thrust shaft block hole (9) at the rear portion of intermediate (4);

Described calming the anger comprises casing (8), impeller (15) and back plate; Casing (8) and back plate are fastenedly connected by screw, and back plate is connected by bolton with intermediate (4), and impeller (15) is set in the rear end of wheel shaft (13) and is fastenedly connected by screw; It is characterized in that:

Described turbine (2) adopts light titanium alloy to make with wheel shaft (13);

The middle part of described wheel shaft (13) is provided with a flexible friction resistance point (14).

2, a kind of light titanium alloy turbocharger according to claim 1 is characterized in that: above-mentioned flexible friction resistance point (14) is an annular groove.