A turbocharger impeller acceleration device

Abstract

The utility model discloses a turbocharger impeller accelerating device realizes turbocharger impeller bleed air acceleration. Including the front section impeller cover shell, the rear section impeller cover shell, the front section impeller cover shell, rear section impeller cover shell all have the inner race, and the inner race between the front section impeller cover shell, rear section impeller cover shell is connected seal, and the rear section impeller cover shell has the outer race, and the outer edge of front section impeller cover shell, the outer race of rear section impeller cover shell is correspondingly equipped with the connecting flange, and the connecting flange on the front section impeller cover shell, rear section impeller cover shell is through fastener solid -state link, makes the front section impeller cover shell, rear section impeller cover shell and is connected as a whole, and the outer race of rear section impeller cover shell forms the gas passage with the inner race of front section impeller cover shell, rear section impeller cover shell, and the rear end of rear section impeller cover shell is provided with the air inlet hole of gas passage, and the front end of front section impeller cover shell is equipped with a plurality of injection holes, and injection hole is respectively communicated with the gas passage, the inner hole of front section impeller cover shell.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, and in particular to a turbocharger impeller acceleration device. Background Technology

[0002] Older diesel engine power systems using turbochargers produce significant pollution, especially during engine startup. Remodeling the engine or selecting a new turbocharger is time-consuming and doesn't guarantee satisfactory results. Therefore, a common, economical, and quicker adjustment method involves introducing compressed air into the turbocharger impeller to rapidly increase the rotor speed, providing more air to the engine, improving combustion, and reducing black smoke during startup. In practice, some turbochargers are designed with impeller acceleration bleed air in mind, incorporating bleed air channels and structures. However, others lack this design and corresponding bleed air channels and structures. To address the latter, this paper presents a novel and flexible turbocharger impeller acceleration device. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a turbocharger impeller acceleration device to achieve turbocharger impeller bleed air acceleration.

[0004] The purpose of this utility model is achieved as follows: A turbocharger impeller acceleration device includes a front impeller casing and a rear impeller casing. Both the front and rear impeller casings have inner rings, which are sealed together. The rear impeller casing has an outer ring. Connecting flanges are correspondingly provided on the outer edges of the front and rear impeller casings. The connecting flanges on the front and rear impeller casings are fixed together by fasteners, making the front and rear impeller casings a single unit. A gas channel is formed between the outer ring of the rear impeller casing and the inner rings of the front and rear impeller casings. An air inlet for the gas channel is provided at the rear end of the rear impeller casing. A plurality of injection holes are provided at the front end of the front impeller casing, which are respectively connected to the gas channel and the inner hole of the front impeller casing.

[0005] Preferably, the inner side of the connecting flange on the front impeller casing and the rear impeller casing is provided with a stepped structure for positioning, and the axial end face of the stepped structure fits in place.

[0006] Preferably, the connecting flanges on the front impeller casing and the rear impeller casing are mounted on the turbocharger by fasteners, and the rear end of the rear impeller casing is provided with a flange, which is mounted on the turbocharger by fasteners.

[0007] Preferably, the air inlet is arranged axially or radially, and the shape of the air inlet is elliptical, circular or square, and the air inlet is equipped with a hexagonal tube connector.

[0008] Preferably, the injection holes are inclined and face the outer edge of the turbocharger impeller.

[0009] Preferably, the front impeller casing and the rear impeller casing are connected by a concave-convex structure and sealed by a sealing ring.

[0010] Due to the adoption of the above technical solution, this utility model has the following beneficial effects: Under the suction of the turbocharger impeller, compressed air enters through the air inlet on the rear impeller casing, passes through the gas passage formed by the combination of the front and rear impeller casings, and is finally ejected through the injection hole, acting on the impeller near the outer diameter, using the kinetic energy of the compressed air to accelerate the rotor.

[0011] This structure is an independent complete set of structures that can be flexibly designed and adjusted according to turbochargers with different impeller sizes and spatial structures. It is easy to install and use, and provides a reference for turbocharger impeller bleed air acceleration. Attached Figure Description

[0012] Figure 1-1 This is a schematic diagram of the structure of this utility model; Figure 1-2 for Figure 1-1 AA sectional view; Figure 1-3 for Figure 1-2 A schematic diagram of direction A; Figure 1-4 for Figure 1-1 BB cross-sectional diagram; Figure 2-1 This is a schematic diagram showing the location of the hexagonal tube connector; Figure 2-2 for Figure 2-1 CC cross-sectional view.

[0013] Figure Labels In the attached diagram, 1 is the front impeller casing, 2 is the rear impeller casing, 3, 4, and 6 are fasteners, 5 is the sealing ring, 7 is the air inlet, 8 is the gas passage, 9 is the injection hole, and 10 is the hexagonal tube connector. Detailed Implementation

[0014] A turbocharger impeller acceleration device includes a front impeller housing 1 and a rear impeller housing 2. Both the front impeller housing 1 and the rear impeller housing 2 have inner rings, which are connected and sealed together. The rear impeller housing 2 has an outer ring. Connecting flanges are correspondingly provided on the outer edge of the front impeller housing 1 and the outer ring of the rear impeller housing 2. The connecting flanges on the front impeller housing 1 and the rear impeller housing 2 are fixed together by fasteners 3, so that the front impeller housing 1 and the rear impeller housing 2 are connected as a whole. A gas channel is formed between the outer ring of the rear impeller housing 2 and the inner rings of the front impeller housing 1 and the rear impeller housing 2. An air inlet for the gas channel is provided at the rear end of the rear impeller housing 2. A plurality of injection holes are provided at the front end of the front impeller housing 1, which are respectively connected to the gas channel and the inner hole of the front impeller housing 1.

[0015] The inner sides of the connecting flanges on the front impeller casing 1 and the rear impeller casing 2 are provided with stepped structures for positioning, and the axial end faces of the stepped structures are in close contact. The connecting flanges on the front impeller casing 1 and the rear impeller casing 2 are mounted on the turbocharger by fasteners 4. The rear end of the rear impeller casing 2 is provided with a flange, which is mounted on the turbocharger by fasteners 6. The air inlet is arranged axially or radially, and the shape of the air inlet is elliptical, circular, or square. The air inlet is equipped with a hexagonal pipe joint. The injection port is inclined and faces the outer edge of the turbocharger impeller. The front impeller casing 1 and the rear impeller casing 2 are connected by a concave-convex structure and sealed by a sealing ring 5.

[0016] Specifically: The turbocharger impeller acceleration device consists of a front impeller casing 1, a rear impeller casing 2, a sealing ring 5, and fasteners 3, 4, and 6. (See attached image) Figure 1-2 As shown, the front impeller casing and the rear impeller casing are connected as a whole by fasteners, forming the overall structure of the impeller acceleration device. Compressed air enters through the air inlet on the rear impeller casing, passes through the gas passage formed by the combination of the front and rear impeller casings, and is finally ejected through the injection hole, acting on the impeller near its outer diameter. The kinetic energy of the compressed air is used to accelerate the rotor. This structure is an independent, complete set, which can be flexibly designed and adjusted according to turbochargers with different impeller sizes and spatial structures, and is convenient to install and use.

[0017] (1) The turbocharger impeller acceleration device consists of a front impeller casing 1, a rear impeller casing 2, a sealing ring 5, and fasteners 3, 4, and 6, as shown in the figure. Figure 1-2 As shown.

[0018] (2) The front impeller casing and the rear impeller casing are fitted together on the outer ring with a stepped structure along the axial end face and a small radial clearance, and on the inner ring with a concave-convex structure. Figure 1-2The structure shown is one of the forms of this patent. The form of the front impeller cover protruding and the rear impeller cover recessed is also a structure claimed by this patent. A sealing ring 5 is set for sealing. The two are connected into a whole by fasteners 3, which constitute the overall structure of the impeller acceleration device.

[0019] (3) The front impeller casing has a stepped structure at the large end, providing an interface for the overall installation of the impeller acceleration device, and is connected by fastener 4. A set of injection holes is also provided near the outer circumference of the large end. The size of the injection holes is φd, the number is n, the positioning dimensions of the injection holes are x, y, z, and the tilt angle is a. See [reference needed]. Figure 1-1 and 1-4 .

[0020] (4) The rear impeller casing consists of two rings, inner and outer (see...). Figure 1-2 This, together with the front impeller casing, forms a gas passage (annular compressed air passage). A stepped structure is provided at the large end of the rear impeller casing, providing an interface for the overall installation of the impeller acceleration device, and is connected via fastener 6. An air inlet is also provided at the large end, providing an external compressed air intake; the shape of the air inlet can be elliptical (see...). Figure 1-3 (e.g., round or square) The air inlet is connected to the gas channel, and a smooth channel is provided.

[0021] If there are no other connecting parts at the large end of the rear impeller casing, the air inlet uses a hexagonal pipe joint for axial or radial air intake, see [link to relevant documentation]. Figure 2-1 and Figure 2-2 .

[0022] (5) During installation, first install the sealing ring 5, then assemble and install the front impeller cover and the rear impeller cover, and connect them into a whole with fasteners 3. Finally, install the acceleration device as a whole onto the booster and connect it with fasteners 4 and 6.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A turbocharger impeller acceleration device, characterized in that: The device includes a front impeller casing and a rear impeller casing. Both the front and rear impeller casings have inner rings, which are sealed together. The rear impeller casing has an outer ring. Connecting flanges are correspondingly provided on the outer edges of the front and rear impeller casings. The connecting flanges on the front and rear impeller casings are fixed together by fasteners, making the front and rear impeller casings a whole. A gas channel is formed between the outer ring of the rear impeller casing and the inner rings of the front and rear impeller casings. An air inlet for the gas channel is provided at the rear end of the rear impeller casing. Several injection holes are provided at the front end of the front impeller casing, which are respectively connected to the gas channel and the inner hole of the front impeller casing.

2. The turbocharger impeller acceleration device according to claim 1, characterized in that: The inner side of the connecting flange on the front impeller casing and the rear impeller casing is provided with a stepped structure for positioning, and the axial end face of the stepped structure fits in place.

3. The turbocharger impeller acceleration device according to claim 1, characterized in that: The connecting flanges on the front and rear impeller casings are mounted on the turbocharger using fasteners. The rear end of the rear impeller casing has a flange, which is mounted on the turbocharger using fasteners.

4. The turbocharger impeller acceleration device according to claim 1, characterized in that: The air intake is set along the axial or radial direction, and the shape of the air intake is elliptical, circular or square. The air intake is equipped with a hexagonal tube connector.

5. The turbocharger impeller acceleration device according to claim 1, characterized in that: The injection holes are angled and face the outer edge of the turbocharger impeller.

6. The turbocharger impeller acceleration device according to claim 1, characterized in that: The front impeller casing and the rear impeller casing are connected by a concave-convex structure and sealed by a sealing ring.

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