Anti-surge valve buffer bushing mounting structure

Abstract

The invention relates to an anti-surge valve buffer bush mounting structure which comprises a turbocharger, an anti-surge valve mounting end face is arranged on the outer side of the turbocharger, an air inlet pipeline is arranged in the turbocharger, a buffer bush is mounted on the outer end face of the air inlet pipeline, and the buffer bush extends out of the anti-surge valve mounting end face. The size h of the portion, extending out of the anti-surge valve mounting end face, of the buffering bush is 1.0 + / -0.1 mm. The buffer bushing is made of a tetrafluoroethylene material, so that the service life of the valve assembly is prolonged while the impact abnormal noise is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of turbochargers and relates to an anti-surge valve buffer bushing installation structure. Background Art

[0002] Turbochargers are key components of modern high-performance engines. They increase the engine's power and torque by increasing the intake pressure. However, under certain operating conditions, turbochargers may experience surge problems. Surge is an unstable operating state that can cause damage to the turbocharger and the entire engine system. To solve this problem, turbochargers are usually equipped with anti-surge valves.

[0003] The anti-surge valve is used as a protective device for turbocharged engines. When the supercharger is working under high boost pressure and the throttle is closed, a very high pressure will be generated in the intercooler pipe, causing the compressor to stop. The anti-surge valve opens to balance the pressure before and after the compressor, avoiding supercharger surge and protecting the supercharger.

[0004] The anti-surge valve can effectively prevent the turbocharger from surging and protect the engine system from damage. At the same time, it can also improve the reliability and durability of the turbocharger and extend its service life.

[0005] When the turbocharger is accelerated, the supercharger will compress a large amount of air and push it in through the throttle. When the throttle is suddenly released, the throttle will close at the same time, but the supercharger will still run at high speed by inertia, generating compressed air in the intake pipe. To avoid engine surge, the anti-surge valve will discharge the residual compressed air. During the opening and closing process of the anti-surge valve, it will hit the casing and generate a sharp abnormal noise. Summary of the invention

[0006] The object of the present invention is to provide an anti-surge valve buffer bushing installation structure, which can solve the problem of generating sharp abnormal noise and also prolong the service life of the valve component.

[0007] According to the technical solution provided by the present invention: an anti-surge valve buffer bushing installation structure includes a turbocharger, the outer side of the turbocharger is an anti-surge valve installation end face, an intake pipe is provided in the turbocharger, a buffer bushing is installed on the outer end face of the intake pipe, and the buffer bushing extends out of the anti-surge valve installation end face.

[0008] As a further improvement of the present invention, the dimension h of the buffer sleeve extending from the anti-surge valve installation end face is 1.0±0.1 mm.

[0009] As a further improvement of the present invention, the buffer bushing is provided with a buffer portion, an axial front limiting portion, a first axial anti-slip claw, a second axial anti-slip claw, and an axial rear limiting portion in sequence, and a vent hole runs through the middle of the buffer bushing.

[0010] As a further improvement of the present invention, the end of the intake pipe is a bushing installation cavity, which is sequentially an axial front limit groove, a first axial anti-dropout claw installation groove, a second axial anti-dropout claw installation groove, and an axial rear limit groove.

[0011] As a further improvement of the present invention, the axial front limiting groove, the first axial anti-slip claw installation groove, the second axial anti-slip claw installation groove, and the axial rear limiting groove are respectively embedded with the axial front limiting portion, the first axial anti-slip claw, the second axial anti-slip claw, and the axial rear limiting portion.

[0012] As a further improvement of the present invention, the embedded axial front limiting portion and the axial front limiting groove are interference fit.

[0013] As a further improvement of the present invention, a first annular surface is formed between the axial front limit portion and the first axial anti-detachment claw, and a second annular surface is formed between the first axial anti-detachment claw and the second axial anti-detachment claw; the first annular surface and the bushing installation cavity are interference fit.

[0014] As a further improvement of the present invention, the buffer portion is in an arc shape.

[0015] As a further improvement of the present invention, the second annular surface is smaller than the first annular surface.

[0016] The positive effects of this application are: The buffer bushing of the present invention adopts tetrafluoroethylene material, which has no precedent in the traditional shell structure; while reducing the abnormal noise of impact, it is firmly connected with the turbocharger and also increases the service life of the valve component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the turbocharger of the present invention.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle.

[0020] Figure 4 for Figure 3 A magnified schematic diagram of area B.

[0021] Figure 5 It is a schematic structural diagram of the buffer bushing of the present invention.

[0022] Figure 1-Figure 5It includes a turbocharger 1, an anti-surge valve mounting end face 1-1, an intake pipe 1-2, an axial front limit groove 1-3, a first axial anti-detachment claw mounting groove 1-4, a second axial anti-detachment claw mounting groove 1-5, an axial rear limit groove 1-6, a buffer bushing 2, a buffer portion 2-1, an axial front limit portion 2-2, a first axial anti-detachment claw 2-3, a second axial anti-detachment claw 2-4, an axial rear limit portion 2-5, a first annular surface 2-6, a second annular surface 2-7, a vent hole 2-8, etc. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0027] like Figure 1 As shown, the present invention is an anti-surge valve buffer bushing installation structure, including a turbocharger 1, the outer side of the turbocharger 1 is an anti-surge valve installation end face 1-1, an intake pipe 1-2 is provided in the turbocharger 1, a buffer bushing 2 is installed on the outer end face of the intake pipe 1-2, and the buffer bushing 2 extends out of the anti-surge valve installation end face 1-1.

[0028] The dimension h of the buffer bushing 2 extending from the anti-surge valve mounting end surface 1-1 is 1.0±0.1 mm.

[0029] like Figure 5 As shown, the buffer bushing 2 is provided with a buffer portion 2-1, an axial front limiting portion 2-2, a first axial anti-slip claw 2-3, a second axial anti-slip claw 2-4, and an axial rear limiting portion 2-5 in sequence, and a vent hole 2-8 runs through the middle of the buffer bushing 2.

[0030] like Figure 2-Figure 4 As shown, the end of the intake pipe 1-2 is a bushing installation cavity, and the bushing installation cavity is sequentially an axial front limit groove 1-3, a first axial anti-dropout claw installation groove 1-4, a second axial anti-dropout claw installation groove 1-5, and an axial rear limit groove 1-6.

[0031] The axial front limiting groove 1-3, the first axial anti-detachment claw installation groove 1-4, the second axial anti-detachment claw installation groove 1-5, and the axial rear limiting groove 1-6 are respectively embedded with the axial front limiting portion 2-2, the first axial anti-detachment claw 2-3, the second axial anti-detachment claw 2-4, and the axial rear limiting portion 2-5.

[0032] The embedded axial front limiting portion 2 - 2 and the axial front limiting groove 1 - 3 are interference fit to prevent the buffer bushing 2 and the turbocharger 1 from rotating relative to each other.

[0033] A first annular surface 2-6 is formed between the axial front limit portion 2-2 and the first axial anti-separation claw 2-3, and a second annular surface 2-7 is formed between the first axial anti-separation claw 2-3 and the second axial anti-separation claw 2-4. The first annular surface 2-6 is interference fit with the bushing installation cavity.

[0034] The buffer portion 2 - 1 is in an arc shape, and can contact the valve of the anti-surge valve more gently.

[0035] The size of the second annular surface 2-7 is smaller than that of the first annular surface 2-6, so as to facilitate the first axial anti-slip claw 2-3 and the second axial anti-slip claw 2-4 to be installed into the bushing installation cavity.

[0036] The buffer bushing 2 is made of tetrafluoroethylene material, which reduces the impact noise and increases the service life of the valve component.

[0037] The working process of the present invention is as follows: When the buffer bushing 2 is subjected to axial impact by the valve in the anti-surge valve, the buffer portion 2-1 absorbs the impact, the axial front limit portion 2-2 and the axial rear limit portion 2-5 prevent the buffer bushing 2 from moving into the intake pipe 1-2, and the first axial anti-detachment claw 2-3 and the second axial anti-detachment claw 2-4 prevent the buffer bushing 2 from escaping from the turbocharger 1.

[0038] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An anti-surge valve buffer bushing installation structure, comprising a turbocharger (1), the outer side of the turbocharger (1) being an anti-surge valve installation end surface (1-1), and an intake pipe (1-2) being provided in the turbocharger (1), characterized in that: A buffer bushing (2) is installed on the outer end surface of the intake pipe (1-2), and the buffer bushing (2) extends out of the anti-surge valve installation end surface (1-1).

2. The anti-surge valve buffer bushing installation structure according to claim 1, characterized in that: The dimension h of the buffer bushing (2) extending from the anti-surge valve mounting end surface (1-1) is 1.0±0.1 mm.

3. The anti-surge valve buffer bushing installation structure according to claim 1, characterized in that: The buffer bushing (2) is provided with a buffer portion (2-1), an axial front limiting portion (2-2), a first axial anti-dropping claw (2-3), a second axial anti-dropping claw (2-4), and an axial rear limiting portion (2-5) in sequence, and a vent hole (2-8) runs through the middle of the buffer bushing (2).

4. The anti-surge valve buffer bushing installation structure according to claim 3, characterized in that: The end of the air intake duct (1-2) is a bushing installation cavity, which is composed of an axial front limit groove (1-3), a first axial anti-dropout claw installation groove (1-4), a second axial anti-dropout claw installation groove (1-5), and an axial rear limit groove (1-6).

5. The anti-surge valve buffer bushing installation structure according to claim 4, characterized in that: The axial front limiting groove (1-3), the first axial anti-detachment claw installation groove (1-4), the second axial anti-detachment claw installation groove (1-5), and the axial rear limiting groove (1-6) are respectively embedded with the axial front limiting portion (2-2), the first axial anti-detachment claw (2-3), the second axial anti-detachment claw (2-4), and the axial rear limiting portion (2-5).

6. The anti-surge valve buffer bushing installation structure according to claim 4, characterized in that: The embedded axial front limiting portion (2-2) and the axial front limiting groove (1-3) are in interference fit.

7. The anti-surge valve buffer bushing installation structure according to claim 4, characterized in that: A first annular surface (2-6) is provided between the axial front limiting portion (2-2) and the first axial anti-detachment claw (2-3), and a second annular surface (2-7) is provided between the first axial anti-detachment claw (2-3) and the second axial anti-detachment claw (2-4); the first annular surface (2-6) and the bushing installation cavity are in interference fit.

8. The anti-surge valve buffer bushing installation structure according to claim 3, characterized in that: The buffer portion (2-1) is in an arc shape.

9. The anti-surge valve buffer bushing installation structure according to claim 1, characterized in that: The second annular surface (2-7) is smaller in size than the first annular surface (2-6).

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