Variable-section turbocharger structure

Abstract

The utility model discloses a variable-section turbocharger structure which comprises a turbocharger. The side edge of the turbocharger is provided with an air cylinder through an air cylinder base, the air cylinder is in butt joint with an air expansion shaft, a shaft body of the air expansion shaft extends into the turbocharger, the shaft body extending into the turbocharger is sleeved with a shaft sleeve, the outer side of the shaft sleeve is provided with a section umbrella through a synchronous part, and the section umbrella extends to a turbine air opening. And the air expansion shaft is synchronously connected with the shaft sleeve through the air expansion key. According to the variable-section turbocharger structure, fluid flow control is completed through the section umbrella body structure, and compared with a common tongue-shaped structure variable-section turbine transformer and a variable-nozzle-ring variable-section turbocharger, the pneumatic control type umbrella body structure adopted by the variable-section turbocharger structure is high in structural strength, and the shape of the control section is stable. And meanwhile, the turbine transformer is prevented from damaging the self structure in the process of changing the fluid cross section.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbochargers, and in particular relates to a variable cross-section turbocharger structure. Background Art

[0002] With the development of the automobile industry, the requirements for engine performance are constantly increasing. Traditional naturally aspirated engines have limitations in intake pressure and intake volume, making it difficult to meet the needs of high power and high efficiency. Turbocharging technology uses the exhaust gas discharged from the engine to drive the turbine, thereby increasing the intake pressure and intake volume, providing more oxygen for the engine, enabling it to burn more fuel, and thus improving engine power and efficiency.

[0003] Traditional turbochargers usually have a fixed intake duct cross-sectional area, which limits the optimization of intake air velocity and supercharging efficiency under different speed and load conditions. In order to achieve higher supercharging efficiency and a wider operating range under different working conditions, variable load surface turbocharging technology came into being.

[0004] Therefore, the present application provides a variable cross-section turbocharger structure, which completes fluid control flow through a cross-section umbrella structure. Compared with the conventional tongue-shaped variable cross-section turbocharger and the variable nozzle ring variable cross-section turbocharger, the pneumatic control umbrella structure adopted in the present application has high structural strength and stable control cross-section shape. At the same time, it avoids damage to the turbine transformer itself in the process of changing the fluid cross-section. Summary of the invention

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A variable cross-section turbocharger structure, comprising a turbocharger; a cylinder is mounted on the side of the turbocharger through a cylinder base, a gas expansion shaft is docked on the cylinder, a shaft body of the gas expansion shaft extends into the interior of the turbocharger, and a shaft sleeve is sleeved on the extended shaft body, a cross-section umbrella is mounted on the outer side of the shaft sleeve through a synchronous member, and the cross-section umbrella extends to the turbine air outlet;

[0007] The air expansion shaft is synchronously connected with the shaft sleeve through an air expansion key.

[0008] Furthermore, the umbrella body of the cross-section umbrella is provided with an expansion slot, and the expansion slot is in expansion contact with the wedge piece along the vertical direction of the air inflation axis, and the wedge piece has a conical structure.

[0009] Furthermore, a limiting protrusion is laterally extended from the top end of the wedge, and the limiting protrusion is in limiting contact with the end of the slot.

[0010] Furthermore, the shaft diameter of the gas expansion shaft between the two sets of shaft sleeves is smaller than the shaft diameter outside the shaft sleeves, and a track is provided along the middle shaft of the gas expansion shaft, and the track is in contact with the raised guide of the inner ring of the shaft sleeve.

[0011] Furthermore, an extension ring is provided at the inner end of the sleeve, and a bellows is installed between two groups of extension rings.

[0012] Furthermore, a base is installed between the root of the cross-section and the shaft sleeve.

[0013] The beneficial effects of the utility model are:

[0014] Compared with the prior art, the present application provides a variable cross-section turbocharger structure, which completes fluid control flow through a cross-section umbrella structure. Compared with the conventional tongue-shaped variable cross-section turbo transformer and the variable nozzle ring variable cross-section turbocharger, the pneumatic control umbrella structure adopted in the present application has high structural strength and stable control cross-section shape. At the same time, it avoids damage to the turbine transformer itself in the process of changing the fluid cross section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a variable cross-section turbocharger structure.

[0016] Figure 2 The utility model is a schematic diagram of the structure of a variable cross-section turbocharger structure cross-section mechanism.

[0017] Figure 3 The utility model is a schematic diagram of a wedge structure of a variable cross-section turbocharger.

[0018] List of Figure Symbols:

[0019] 1 is a turbocharger, 3 is a cylinder base, 4 is a cylinder, 5 is a gas expansion shaft, 6 is a synchronizer, 7 is a bellows, 8 is a shaft sleeve, 9 is a cross-section umbrella, 11 is a track, 12 is an expansion slot, 13 is an extension ring, 14 is a base, 15 is a wedge, and 16 is a limiting protrusion. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, a variable cross-section turbocharger structure includes a turbocharger; a cylinder 4 is installed on the side of the turbocharger 1 through a cylinder base 3, and the cylinder 4 is connected to a gas expansion shaft 5, the shaft body of the gas expansion shaft 5 extends into the interior of the turbocharger 1, and a sleeve 8 is mounted on the extended shaft body, and a cross-section umbrella 9 is installed on the outer side of the sleeve 8 through a synchronous member 6, and the cross-section umbrella 9 extends to the turbine air outlet; the gas expansion shaft 5 is synchronously connected with the sleeve 8 through a gas expansion key. The umbrella body of the cross-section umbrella 9 is provided with an expansion slot 12, and the expansion slot 12 is in expansion contact with a wedge 15 along the vertical direction of the gas expansion shaft 5, and the wedge 15 is a conical structure. Among them, the cylinder 4 is used as a pneumatic driving element, and can drive the sleeve 8 with the cross-section umbrella 9 along the direction of the gas expansion shaft 5 through the gas expansion key, and the sleeve 8 is used as a driving carrier structure. The cylinder 4 can also input the high-pressure gas required for gas expansion into the gas expansion shaft 5, and the gas expansion key is adapted to lift and drive the sleeve 8. During the movement, the cross-sectional umbrella 9 cooperates with the wedge 15 to expand the cross-sectional umbrella 9 and limit the fluid flow.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the top end of the wedge 15 extends laterally with a limiting protrusion 16, and the limiting protrusion 16 is in limiting contact with the end of the slot 12. The limiting protrusion 16 prevents the cross-section umbrella 9 from being damaged due to excessive expansion.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the shaft diameter of the gas expansion shaft 5 between the two sets of shaft sleeves 8 is smaller than the shaft diameter outside the shaft sleeve 8, and a track 11 is provided along the middle shaft of the gas expansion shaft 5, and the track 11 is in contact with the raised guide of the inner ring of the shaft sleeve 8. Among them, the small-sized shaft diameter structure in the middle section of the gas expansion shaft 5 is adapted to the installation process of the shaft sleeve 8 and other equipment, which is convenient for positioning.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the inner end of the sleeve 8 is provided with an extension ring 13, and a bellows 7 is installed between two sets of extension rings 13. The bellows 7 protects the middle section of the air shaft 5 to prevent the introduction of impurities or rust due to long-term use.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a base 14 is installed between the root of the cross-sectional umbrella 9 and the shaft sleeve 8. The design of the base 14 facilitates the installation of the cross-sectional umbrella 9.

[0026] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A variable cross-section turbocharger structure, comprising a turbocharger; wherein: A cylinder (4) is mounted on the side of the turbocharger (1) via a cylinder base (3); the cylinder (4) is butted with an air expansion shaft (5); the air expansion shaft (5) extends into the interior of the turbocharger (1); a shaft sleeve (8) is sleeved on the shaft body that extends into the turbocharger (1); a cross-sectional umbrella (9) is mounted on the outer side of the shaft sleeve (8) via a synchronous member (6); the cross-sectional umbrella (9) extends to the turbine air outlet; The gas expansion shaft (5) is synchronously connected to the shaft sleeve (8) via a gas expansion key.

2. A variable-section turbocharger structure according to claim 1, characterized in that: The umbrella body of the cross-section umbrella (9) is provided with an expansion slot (12), the expansion slot (12) is in expansion contact with a wedge piece (15) along the vertical direction of the inflation axis (5), and the wedge piece (15) is in a conical structure.

3. A variable-section turbocharger structure according to claim 2, characterized in that: A limiting protrusion (16) extends laterally from the top end of the wedge (15), and the limiting protrusion (16) is in limiting contact with the end of the slot (12).

4. The variable cross-section turbocharger structure according to claim 1, characterized in that: The diameter of the shaft body of the gas expansion shaft (5) between the two sets of shaft sleeves (8) is smaller than the diameter of the shaft outside the shaft sleeve (8), and a track (11) is provided along the middle section of the shaft body of the gas expansion shaft (5), and the track (11) is in guiding contact with the protrusion of the inner ring of the shaft sleeve (8).

5. A variable-section turbocharger structure according to claim 4, characterized in that: An extension ring (13) is provided at the inner end of the shaft sleeve (8), and a bellows (7) is installed between two groups of extension rings (13).

6. The variable-section turbocharger structure according to claim 1, characterized in that: A base (14) is installed between the root of the cross-section umbrella (9) and the shaft sleeve (8).

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