CN104454034A - Fast-inserting type double-sealed variable nozzle turbocharger - Google Patents
Fast-inserting type double-sealed variable nozzle turbocharger Download PDFInfo
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- CN104454034A CN104454034A CN201410769180.XA CN201410769180A CN104454034A CN 104454034 A CN104454034 A CN 104454034A CN 201410769180 A CN201410769180 A CN 201410769180A CN 104454034 A CN104454034 A CN 104454034A
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Abstract
The invention belongs to the field of turbocharger, particularly relates to a fast-inserting type double-sealed variable nozzle turbocharger. The fast-inserting type double-sealed variable nozzle turbocharger comprises a fast-inserting type double-sealed flow-directed integral turbocharger variable nozzle assembly, a volute casing, a turbine, a screw adjusting pin and a vent valve. The fast-inserting type double-sealed flow-directed integral turbocharger variable nozzle assembly comprises a volute end sealing ring, a turbine countervane base, a device with twelve vanes, vanes main supporting base, an intermediate cover, a drive ring, a track ring, vane locating pins and four screws. The fast-inserting type double-sealed variable nozzle turbocharger has the advantages that many places on the structure are modified and multi-separation is changed to riveting to apply to the turbocharger, location is reliable, assembling relationship of components and parts is simplified. Assembly accuracy is improved, components and parts are reduced and manufacturing cost is reduced, assembly is easy to operate, efficiency is high and popularization is available.
Description
Technical field
The invention belongs to field of turbochargers, specifically a kind of push-in double-sealing variable nozzle turbocharger.
Background technique
Technology for Turbocharger Manufacturing improves density of the induced air by turbosupercharger, can improve the combination properties such as the power character of motor, Economy and exhaust index comprehensively, injects strong impetus, be described as second milestone in internal combustion engine development history to motor.
In order to improve the economic performance of turbosupercharger, many producers have carried out large quantifier elimination in recent years, and result of study shows that variable nozzle ring cross-sectional turbosupercharger is one of most effective method.
Abroad, variable-nozzle cross section turbosupercharger is ripe gradually is also introducing to the market gradually.Domestic, in this series products also most treatment research stage, main cause is the material of its vital part nozzle ring, design, processing and manufacture do not pass a test.
Supercharging technology is one of the major measure improving engine power performance, and most widely used be adopt turbocharging technology.Turbosupercharger is the energy utilizing motor combustion gas, mechanical work is become by turbine, drive turbine wheel transmission, the compressor impeller coaxial with turbine wheel also runs up with same speed, after compresses fresh air, send into cylinder, improve air density and the aeration quantity of cylinder, thus improve the power of motor, improve the combustion condition of fuel oil, make fuel oil Thorough combustion, thus fuel consume is reduced, decrease the ratio of Toxic in the waste gas entering air, and then finally realize environmental protection and energy saving, improve the effect of engine power.
But vehicle turbocharger should have broader operating range, because when time of engine low speed, the energy provided due to waste gas is little, and the rotating speed of turbosupercharger is too low, be difficult to provide applicable boost pressure and sufficient air inflow, be also just difficult to produce larger torque; Be again motor when running up, because delivery temperature and pressure are very high, pressurized machine may be caused to exceed the speed limit.In addition, delayed due to pressurized machine response, makes the response of the response ratio air inflow supply of in transient process oil mass supply fast, and therefore causes the transient response performance of motor difference and acceleration of smoldering.In order to address these problems, people have employed all multi-methods such as reducing pressurized machine rotary inertia, installation exhaust vent valve, auxiliary air injection, adjustment nozzle ring aperture.The method of nozzle ring aperture is regulated to have been widely recognized because of improve with the obvious advantage of its engine performance.Adopt variable nozzle ring turbosupercharger compared with the common pressurized machine of employing, the low speed torque of motor, smoke intensity and oil consumption are obtained for improvement.
Variable-nozzle pressurized machine (VNT) is realized and the optimum Match of diesel engine under every speed operating mode by the flow area changing turbine.All operating points can have good mating with motor, make the performance of motor can reach better.Be furnished with an adjustable nozzle ring, it changes the flow area of turbine by regulating the variable tongue piece position on nozzle ring.Thus make it at the little turbine of low speed time image one rapid-action at the high efficiency large turbine of high speed time image one.Turbine efficiency when making motor can not only keep high speed, and turbine efficiency when can improve low speed, by reducing turbine flow area, can farthest reduce turbo-lag phenomenon.Also can reduce the friction of waste gas when flow at high speed and make motor export larger power.Use variable-nozzle pressurized machine, low speed torque performance and the acceleration performance of motor can be improved, and significantly reduce the exhaust smoke of motor.The structure of variable nozzle turbocharger is that fixed nozzle is changed into adjustable nozzle, can be divided into axial flow and radial-flow type two kinds under normal circumstances.Axial flow variable nozzle turbocharger is mainly used in big-block engine, and turbine efficiency is high.The main application area of radial-flow type variable nozzle turbocharger is medium and small motor.Variable-nozzle cross section of the present invention turbosupercharger belongs to radial-flow type variable nozzle turbocharger.
The opening angle that existing variable-nozzle cross section turbosupercharger controls water conservancy diversion blade face needs first with reference to a series of engine operation condition (such as valve opening, engine speed, atmospheric pressure and water temperature etc.), control unit of engine will calculate most suitable turbocharger pressure, ECU is fed back to afterwards by position feedback device, and the guide vane sectional area size calculated required for current pressurized machine, pressurized machine internal regulation bar position is changed by degree of vacuum afterwards by vacuum governor, and promote variable tongue piece inclination or vertical angle drive nozzle ring on nozzle ring, nozzle ring links inner guide vane more afterwards, regulate the angle of its On/Off, thus realize variable cross section technology, meet low speed torque performance and the acceleration performance of motor.
As shown in Figures 1 and 2, it comprises a driving ring, three supporting wheels, three support wheel shafts, 11 driven rocking arms, 11 blades, blade seat, three step pins and a nozzle carrier to existing turbocharger variable nozzle ring.Supporting wheel is arranged on blade seat by supporting wheel shaft, adopts Spielpassung between supporting wheel and support wheel shaft, supports between wheel shaft and blade seat and adopts Spielpassung.Blade and driven rocking arm are arranged on blade seat by being welded and fixed, and adopt Spielpassung between blade and blade seat.Driving ring is assemblied in the draw-in groove of 3 supporting wheels.Step pin is arranged in the pin hole on blade seat, and the pin hole on step pin and blade seat adopts Spielpassung.Nozzle carrier is provided with three be used for nozzle carrier being arranged in the screw hole on turbocharger middle body.
Accompanying drawing 3 is the schematic diagram that existing variable nozzle ring is arranged in turbosupercharger, and it comprises intermediate, spiral case, bleed valve, nozzle ring, blade seat is arranged on turbocharger middle body by step pin, and the pin hole on step pin and turbocharger middle body adopts Spielpassung.Nozzle carrier is arranged on turbocharger middle body by screw.
Existing variable nozzle ring has the following disadvantages: one be most of component is all separation member, and component assembling is loaded down with trivial details, and efficiency is low, and to final assembly, personnel have higher requirements; Two is when installing variable nozzle ring in turbosupercharger, not only nozzle carrier 8 will be arranged on turbocharger middle body by screw, and to position limit pin be assembled on turbocharger middle body, which adds bearing support manufacturing procedure and assembly process, add number of spare parts simultaneously.
Honeywell Inc. discloses the variable nozzle component of turbocharger with blade seal ring in Chinese patent CN 102828785A, blade seal ring pushes the near-end of blade to by discarding pressure reduction, and therefore blade is pushed to relative nozzle wall, thus the far-end of described blade is close to described wall, cause reducing at the near-end of blade and the gap of far-end or closing.
Known complete closable spray nozzle device in Japanese patent publication JP-A-2002-038964.Build variable nozzle device by pivotable blade, make the geometrical construction of runner be adjustable.The blade that pivotable vane tip is adjacent adjacent respectively, makes almost to be closed completely by the runner of nozzle.
Summary of the invention
The present invention is directed to the deficiencies in the prior art part, propose a kind of push-in double-sealing variable nozzle turbocharger.
The invention provides following technological scheme:
Push-in double-sealing variable nozzle turbocharger, it comprises push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger, volute, turbine, screw adjustment pin and bleed valve, push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger comprises whirlpool end seal ring, turborotor seat, 12 impeller assemblys, the main supporting base of blade, intermediate gland, driving ring, orbit ring, blade locating stud and four screws, turbine end seal ring is located at turborotor seat end, and impeller assembly comprises blade assembly, sharf, blade assembly is fixed on sharf, sharf and blade assembly are distributed on the both sides of the main supporting base of blade and turborotor seat, driving ring is provided with 13 fluting shapes, 12 blades are located in fluting respectively, remain a fluting to be connected with the initiatively rocking arm of intermediate, four screws are respectively by turborotor seat, the main supporting base of blade, intermediate gland, driving ring and orbit ring riveted joint are fixed as one, and blade locating stud is connected between driving ring and main supporting base fixing.
Described whirlpool end seal ring comprises two, is located at respectively in two seal grooves on the external cylindrical surface of turborotor seat front end.
Described driving ring is also provided with the opening slot of 12 V-shapeds.
Advantage of the present invention is on the nozzle ring basis of digesting and assimilating conventional model, in structure, many places change makes many places separation into riveted joint and is applied to pressurized machine, location is reliable, component assembly relation simplifies, improve assembly precision. decrease component and reduce cost of production, assembling easily operates, efficiency is high, adapts to promote; Variable-area turbocharger maintains the high intrinsic advantage of existing variable nozzle ring turbocharger efficiency, can solve again supercharged diesel engine low-speed big, bad start acceleration performance and acceleration and the specific question such as smolder.
Accompanying drawing explanation
Fig. 1 is existing variable nozzle ring structural representation;
Fig. 2 is existing variable nozzle ring structural representation;
Fig. 3 is the schematic diagram that existing variable nozzle ring is arranged in turbosupercharger;
Fig. 4 is the detonation configuration schematic diagram of this push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger;
Fig. 5 is variable-nozzle assembly structural representation provided by the invention
Fig. 6 is that the A-A of Fig. 7 is to sectional view;
Fig. 7 is structural representation provided by the invention;
Fig. 8 coordinates schematic diagram for inserting formula double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger with bleed valve.
Embodiment
Push-in double-sealing variable nozzle turbocharger as shown in Figure 7, it comprises push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger, volute, turbine, screw adjustment pin and bleed valve 13, nozzle assembly loads in the pin-and-hole on the end face of side, intermediate 16 whirlpool by locating stud 14, realize the axially locating of nozzle ring 11, rotary spray nozzle ring 11, make the screw adjustment pin 15 on the aperture aligning volute 12 on intermediate gland cylinder, this screw adjustment pin 15 uses red copper pad 17 to seal, screw adjustment pin 15 can be tightened, until nozzle ring circumferencial direction can not rotate, now nozzle ring 11 location in movement assembling completely.3rd step assembling volute, nozzle ring 11 is pushed down in volute hole of topping bar, and is tightened together by intermediate spiral case nozzle ring with three pressing plates 18 and six screws 19.As Fig. 4, Fig. 5, shown in Fig. 6, a kind of push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger, by two whirlpool end seal rings 2, a turborotor seat 1, 12 impeller assemblys, a main supporting base 3 of blade, an intermediate gland 4, a driving ring 5, an orbit ring 8, a blade locating stud 10, four screw compositions 9, impeller assembly comprises blade assembly 6 and sharf 7, driving ring 5 end face has two kinds of opening slots, driving ring 5 outer ring has the opening slot of 12 wide V-types, opening slot driving ring 3 circumferencial direction spacing in intermediate gland 4 time reduce between mismatch error, driving ring 5 inner ring has 13 opening slots, wherein 12 impeller assemblys kept a grip on by 12 opening slots, the initiatively rocking arm on intermediate kept a grip on by a remaining opening slot, 12 impeller assemblys realize the folding change of nozzle under the drive of driving ring 5, orbit ring 8 is riveted with remaining parts in nozzle ring, and the single-way moving of the step surface restriction driving ring 5 of rule distribution on it, intermediate gland 4 has equally 11 press the rightabout movements of wrapping and limiting driving rings 5,
Intermediate gland 4 is except completing the unidirectional restriction in driving ring 5 movement process, and large cylindrical flange is used for being fixed in turbosupercharger, external cylindrical surface has an aperture, is fixed in turbosupercharger again by nozzle ring 5;
Turborotor seat 1, front end external cylindrical surface has two seal grooves, each groove is built with a whirlpool end seal ring 2, this structure reaches sealing effect with after the combination of volute endoporus, the inner arc surface of turborotor seat 1 is identical with the steel wheel molded line curved surface curvature matched, complete the derivation of high-temp waste gas, in 12 holes that 12 impeller assemblys assist fulcrum to be arranged on turborotor seat 1 end face, its end face also has the hole that four are not uniform, assist fulcrum hole point-blank with adjacent impeller assembly and the center of circle of face, go side circle; Turborotor seat 1, the main supporting base 3 of blade, intermediate gland 4. driving ring 5 and orbit ring 8 are riveted into one by four screws 9;
Impeller assembly comprises blade assembly 6 and sharf 7, sharf 7 and blade assembly 6 are distributed on the both sides of the main supporting base 3 of blade and turborotor seat 1, a corresponding blade 6 of sharf 7, is fixedly mounted on the main supporting base 3 of blade and turborotor seat 1 by riveted joint between sharf 7 and blade 6;
Blade locating stud 10 has two effects, one is the assembling and positioning of driving ring 5 in turbosupercharger, two is break points of the maximum opening of impeller assembly, blade locating stud 10 is in driving ring 5 and blade main supporting base 3 interference fit joint, through remaining adjacent parts, the minimum aperture of impeller assembly holds realization constrained each other by the whole story of adjacent two blade assemblies 6.
Claims (3)
1. push-in double-sealing variable nozzle turbocharger, it comprises push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger, volute, turbine, screw adjustment pin and bleed valve, is characterized in that: push-in double-sealing water conservancy diversion integrated type variable nozzle component of turbocharger comprises whirlpool end seal ring, turborotor seat, 12 impeller assemblys, the main supporting base of blade, intermediate gland, driving ring, orbit ring, blade locating stud and four screws, turbine end seal ring is located at turborotor seat end, and impeller assembly comprises blade assembly, sharf, blade assembly is fixed on sharf, sharf and blade assembly are distributed on the both sides of the main supporting base of blade and turborotor seat, driving ring is provided with 13 fluting shapes, 12 blades are located in fluting respectively, remain a fluting to be connected with the initiatively rocking arm of intermediate, four screws are respectively by turborotor seat, the main supporting base of blade, intermediate gland, driving ring and orbit ring riveted joint are fixed as one, and blade locating stud is connected between driving ring and main supporting base fixing.
2. push-in double-sealing variable nozzle turbocharger according to claim 1, is characterized in that: described whirlpool end seal ring comprises two, is located at respectively in two seal grooves on the external cylindrical surface of turborotor seat front end.
3. push-in double-sealing variable nozzle turbocharger according to claim 1, is characterized in that: described driving ring is also provided with the opening slot of 12 V-shapeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769180.XA CN104454034B (en) | 2014-12-12 | 2014-12-12 | Push-in double containment variable-nozzle turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769180.XA CN104454034B (en) | 2014-12-12 | 2014-12-12 | Push-in double containment variable-nozzle turbocharger |
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| CN104454034A true CN104454034A (en) | 2015-03-25 |
| CN104454034B CN104454034B (en) | 2016-07-06 |
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| CN201410769180.XA Active CN104454034B (en) | 2014-12-12 | 2014-12-12 | Push-in double containment variable-nozzle turbocharger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104863649A (en) * | 2015-05-29 | 2015-08-26 | 无锡科博增压器有限公司 | Split type turbine shell for supercharger |
| CN106870018A (en) * | 2017-04-11 | 2017-06-20 | 奕森科技（上海）有限公司 | A kind of turbocharger variable nozzle ring and its assembly method |
| CN107035427A (en) * | 2017-04-11 | 2017-08-11 | 奕森科技（上海）有限公司 | A kind of variable nozzle component of turbocharger and its assembly method |
| CN107100677A (en) * | 2017-04-07 | 2017-08-29 | 奕森科技（上海）有限公司 | A kind of nozzle ring assemblies of fixed blade and adjustable vane combination |
| CN107524482A (en) * | 2017-07-14 | 2017-12-29 | 同济大学 | A kind of double scroll turbine shrouds of combined type |
| CN112392590A (en) * | 2020-03-23 | 2021-02-23 | 长城汽车股份有限公司 | Control method and device for variable-section turbocharger and vehicle |
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| US20020119039A1 (en) * | 2001-02-27 | 2002-08-29 | Yasuaki Jinnai | Adjustable nozzle mechanism for variable capacity turbine and its production method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863649A (en) * | 2015-05-29 | 2015-08-26 | 无锡科博增压器有限公司 | Split type turbine shell for supercharger |
| CN107100677A (en) * | 2017-04-07 | 2017-08-29 | 奕森科技（上海）有限公司 | A kind of nozzle ring assemblies of fixed blade and adjustable vane combination |
| CN106870018A (en) * | 2017-04-11 | 2017-06-20 | 奕森科技（上海）有限公司 | A kind of turbocharger variable nozzle ring and its assembly method |
| CN107035427A (en) * | 2017-04-11 | 2017-08-11 | 奕森科技（上海）有限公司 | A kind of variable nozzle component of turbocharger and its assembly method |
| CN107035427B (en) * | 2017-04-11 | 2023-02-28 | 奕森科技(江苏)有限公司 | Variable nozzle assembly of turbocharger and assembly method thereof |
| CN107524482A (en) * | 2017-07-14 | 2017-12-29 | 同济大学 | A kind of double scroll turbine shrouds of combined type |
| CN112392590A (en) * | 2020-03-23 | 2021-02-23 | 长城汽车股份有限公司 | Control method and device for variable-section turbocharger and vehicle |
| CN112392590B (en) * | 2020-03-23 | 2022-05-06 | 长城汽车股份有限公司 | Control method and device for variable-section turbocharger and vehicle |
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| CN104454034B (en) | 2016-07-06 |
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