Connecting device and engine turbocharging system

Abstract

The utility model provides a connecting device and an engine turbocharging system, and relates to the technical field of engine connecting structures. The connecting device comprises a first connecting structure and a second connecting structure, the first connecting structure comprises a flange end and a first connecting pipe connected with the flange end, and the flange end is used for being connected with a turbocharger of an engine; the first end of the telescopic part is connected with the first connecting pipe; the second end of the telescopic part is connected with the second connecting pipe; and the air outlet structure is connected with the second connecting pipe. The connecting device disclosed by the utility model has flexibility, solves the problem that the corrugated pipe does not have a telescopic function in engineering machinery of a large-tonnage vehicle type, and improves the stability of an engine turbocharging system.

Description

Technical Field

[0001] The utility model relates to the technical field of engine connection structures, in particular to a connection device and an engine turbocharging system. Background Art

[0002] In the prior art engine turbocharger system, the turbocharger and the post-processing system need to be connected through a bellows, but the bellows in the prior art are all fixed structures and do not have a telescopic function. On the other hand, the bellows structure in the automotive field is used in larger tonnage engineering machinery, such as 8-ton models, and the bellows structure in the automotive field cannot be well applied. Utility Model Content

[0003] The embodiment of the utility model provides a connection device and an engine turbocharger system to solve the problem that the bellows has no telescopic function in engineering machinery of a larger tonnage type.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The present invention provides a connection device for use in an engine turbocharger system, comprising:

[0006] A first connection structure, the first connection structure comprising a flange end and a first connection pipe connected to the flange end, the flange end being used to be connected to a turbocharger of an engine;

[0007] a telescopic portion, a first end of which is connected to the first connecting pipe;

[0008] a second connecting pipe, to which the second end of the telescopic portion is connected;

[0009] An air outlet structure is connected to the second connecting pipe.

[0010] Optionally, the telescopic portion is in a natural state and has an axial length of a first preset length, and with the first preset length as the origin, the telescopic range of the telescopic portion (2) in the axial direction is between a negative value of a second preset length and a positive value of the second preset length;

[0011] Wherein, the first preset length is greater than the second preset length.

[0012] Optionally, the telescopic portion is in a natural state and has a radial length of a third preset length, and with the third preset length as the origin, the telescopic range of the telescopic portion in the radial direction is between a negative value of a fourth preset length and a positive value of the fourth preset length;

[0013] Wherein, the third preset length is greater than the fourth preset length, and the second preset length is greater than the fourth preset length.

[0014] Optionally, the second connecting pipe is connected to the air outlet structure via a third connecting pipe.

[0015] Optionally, the connecting device further comprises:

[0016] A heat-insulating layer covers the outer surface of the third connecting pipe.

[0017] Optionally, the material of the thermal insulation layer is network-attached aluminum foil fiberglass cloth.

[0018] Optionally, a plurality of folds are provided on the outer surface of the telescopic part, or the outer surface of the telescopic part is in a cylindrical spiral structure.

[0019] The present utility model also provides an engine turbocharging system, comprising the connection device as described above, and further comprising:

[0020] turbochargers and aftertreatment systems;

[0021] The turbocharger is connected to the flange end of the connecting device;

[0022] The post-processing system is connected to the gas outlet structure of the connecting device.

[0023] The beneficial effects of the utility model are:

[0024] The connection device of the utility model comprises: a first connection structure, the first connection structure comprises a flange end and a first connection pipe connected to the flange end, the flange end is used to connect to the turbocharger of the engine; a telescopic part, the first end of the telescopic part is connected to the first connection pipe; a second connection pipe, the second end of the telescopic part is connected to the second connection pipe; an air outlet structure, the air outlet structure is connected to the second connection pipe. The connection device of the utility model has telescopicity, which solves the problem that the bellows does not have a telescopic function in engineering machinery of larger tonnage, and improves the stability of the engine turbocharger system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram showing the structure of a connecting device provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram showing the structure of the outer surface of the telescopic part provided by an embodiment of the utility model;

[0027] Figure 3 for Figure 1 Schematic diagram of some structures in ;

[0028] Figure 4 A schematic diagram showing the structure of an engine turbocharging system provided by an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] First connection structure 1; flange end 11; first connection pipe 12;

[0031] Telescopic part 2;

[0032] Second connecting pipe 3;

[0033] Exhaust structure 4;

[0034] The third connecting pipe 5;

[0035] Insulation layer 6;

[0036] folds 7;

[0037] Turbocharger 8;

[0038] Aftertreatment system 9;

[0039] Connecting device 10. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the utility model. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. In addition, for clarity and brevity, the description of known functions and structures is omitted.

[0041] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0042] The utility model aims to solve the problem that the bellows in engineering machinery with a larger tonnage have no telescopic function, and provides a connecting device and an engine turbocharger system.

[0043] Reference Figure 1 As shown, the embodiment of the utility model provides a connection device, which is applied to an engine turbocharger system, comprising:

[0044] A first connection structure 1, the first connection structure 1 comprising a flange end 11 and a first connection pipe 12 connected to the flange end 11, the flange end 11 being used to connect to a turbocharger of an engine;

[0045] A telescopic part 2, wherein a first end of the telescopic part 2 is connected to the first connecting pipe 12;

[0046] A second connecting pipe 3, to which the second end of the telescopic part 2 is connected;

[0047] An air outlet structure 4 connected to the second connecting pipe 3 .

[0048] In the embodiment of the utility model, the flange end 11 is used to connect with the turbocharger of the engine, and the flange end 11 is provided with a plurality of bolt mounting holes, and the flange end 11 is connected with the turbocharger of the engine through the bolt mounting holes and the corresponding bolts. Optionally, the bolt mounting holes are set to six, and the plurality of bolt mounting holes are spaced and distributed in the edge area of ​​the flange end 11. In actual use, the turbocharger of the engine is connected with the flange end 11 and the first connecting pipe 12 by bolts. Once a failure occurs, the maintenance of the turbocharger can be achieved by removing the bolts, which improves the convenience of maintenance. Here, the first connecting pipe 12 is a hard metal material. It should be noted that the first connecting structure 1 of the utility model is the intake end of the high-temperature gas. The second connecting pipe 3 is also a hard metal material, and the material of the second connecting pipe 3 can be the same as that of the first connecting pipe 12, or it can be set to a different material. The outlet structure 4 of the utility model is used to connect the post-processing system, and the outlet structure 4 is the outlet end of the high-temperature gas.

[0049] The telescopic part 2 of the utility model is connected to the first connecting pipe 12 and the second connecting pipe 3 respectively. The telescopic part 2 has a shock-absorbing effect, which can buffer the different-frequency vibrations between the engine's turbocharger and the after-treatment system, and can avoid the problem of the fixed bellows in the prior art being torn due to the different-frequency vibrations of the engine and the after-treatment system, thereby improving the stability of the engine's turbocharger system.

[0050] Reference Figure 2 As shown, optionally, a plurality of wrinkles 7 are provided on the outer surface of the telescopic part 2, or the outer surface of the telescopic part 2 is in a cylindrical spiral structure.

[0051] In the embodiment of the utility model, as required, the outer surface of the telescopic part 2 is provided with a plurality of folds 7, or the outer surface of the telescopic part 2 is a cylindrical spiral structure, which can achieve the stretching or compression of the telescopic part 2. Of course, the telescopic part 2 can also be telescopic in the radial direction.

[0052] Optionally, the cross section of the telescopic part 2 is circular, and the cross-sectional areas at both ends of the telescopic part 2 are smaller than the cross-sectional area of ​​the middle part of the telescopic part 2 .

[0053] Optionally, the telescopic part 2 is in a natural state and its axial length is a first preset length. With the first preset length as the origin, the telescopic range of the telescopic part (2) in the axial direction is between the negative value of the second preset length and the positive value of the second preset length; wherein the first preset length is greater than the second preset length.

[0054] In the embodiment of the utility model, the first preset length is preferably 18.5 mm, and the length of the telescopic part 2 in the natural state and in the axial direction is 18.5 mm, that is, the length of the telescopic part 2 when it is not compressed is 18.5 mm. The telescopic range of the telescopic part 2 in the axial direction is [-a, a], a represents the second preset length, and the second preset length is preferably 18 mm. The telescopic range along the axial direction is [-18, 18], that is, the maximum compression along the axial direction is 18 mm, and the maximum stretching along the axial direction is also 18 mm.

[0055] Optionally, the telescopic part 2 is in a natural state and has a radial length of a third preset length. With the third preset length as the origin, the telescopic range of the telescopic part 2 in the radial direction is between a negative value of a fourth preset length and a positive value of the fourth preset length.

[0056] Wherein, the third preset length is greater than the fourth preset length, and the second preset length is greater than the fourth preset length.

[0057] In the embodiment of the utility model, the third preset length is the length in the natural state and in the radial direction. If the telescopic range of the telescopic part 2 in the radial direction is expressed as [-b, b], b represents the fourth preset length; the fourth preset length is preferably 16 mm, the third preset length is greater than 16 mm, and the telescopic range in the radial direction is [-16, 16], that is, the maximum compression amount in the radial direction is 16 mm, and the maximum stretching amount in the axial direction is also 16 mm. Here, the radial direction and the axial direction are perpendicular to each other.

[0058] The utility model can avoid the problem of tearing due to the different frequency vibrations of the engine and the post-processing by means of the two telescopic ranges set as above, and can ensure the static rigidity of the telescopic part 2.

[0059] Reference Figure 3 As shown, optionally, the second connecting pipe 3 and the air outlet structure 4 are connected via a third connecting pipe 5 .

[0060] In the embodiment of the utility model, the second connecting pipe 3 is connected to the air outlet structure 4 through the third connecting pipe 5. The third connecting pipe 5 is also made of hard metal. The third connecting pipe 5 has a certain curvature, and the curvature range can be set between 45° and 65°. Through the design of this curvature, the installation space between the engine and the after-treatment system can be saved.

[0061] Optionally, the connecting device further comprises:

[0062] The thermal insulation layer 6 covers the outer surface of the third connecting pipe 5 .

[0063] Optionally, the material of the thermal insulation layer 6 is a network-attached aluminum foil glass fiber cloth.

[0064] In the embodiment of the utility model, the insulation layer 6 is a 15 mm thick network aluminum foil fiberglass cloth, which is wrapped around the outer surface of the third connecting pipe 5, and can effectively prevent the ambient air temperature from increasing, and play a protective role to prevent scalding maintenance personnel.

[0065] In summary, the connection device of the utility model can not only meet the circulation function of high-temperature air, but also buffer vibration, and because of the added thermal insulation layer, it can effectively prevent the surrounding air temperature from increasing.

[0066] Reference Figure 4 As shown, the embodiment of the utility model also provides an engine turbocharging system, including Figures 1 to 3 The connecting device shown also includes:

[0067] Turbocharger 8 and aftertreatment system 9;

[0068] The turbocharger 8 is connected to the flange end of the connecting device 10;

[0069] The post-processing system 9 is connected to the gas outlet structure of the connecting device 10 .

[0070] In the embodiment of the utility model, the connecting device 10 is respectively connected to the turbocharger 8 and the post-processing system 9, which can not only meet the circulation function of high-temperature air, but also buffer vibration, and because the thermal insulation layer is added, it can effectively prevent the surrounding air temperature from increasing.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the protection scope of the present invention.

Claims

1. A connection device, characterized in that: Applied to engine turbocharging systems, including: A first connection structure (1), the first connection structure (1) comprising a flange end (11) and a first connection pipe (12) connected to the flange end (11), the flange end (11) being used to be connected to a turbocharger of an engine; A telescopic part (2), wherein a first end of the telescopic part (2) is connected to the first connecting pipe (12); a second connecting pipe (3), the second end of the telescopic part (2) being connected to the second connecting pipe (3); An air outlet structure (4), wherein the air outlet structure (4) is connected to the second connecting pipe (3).

2. The connection device according to claim 1, characterized in that: The telescopic part (2) is in a natural state and has an axial length of a first preset length. With the first preset length as the origin, the telescopic range of the telescopic part (2) in the axial direction is between a negative value of the second preset length and a positive value of the second preset length; Wherein, the first preset length is greater than the second preset length.

3. The connection device according to claim 2, characterized in that: The telescopic part (2) is in a natural state and has a radial length of a third preset length. With the third preset length as the origin, the telescopic range of the telescopic part (2) in the radial direction is between a negative value of a fourth preset length and a positive value of the fourth preset length; Wherein, the third preset length is greater than the fourth preset length, and the second preset length is greater than the fourth preset length.

4. The connection device according to claim 1, characterized in that: The second connecting pipe (3) and the air outlet structure (4) are connected via a third connecting pipe (5).

5. The connection device according to claim 4, characterized in that: The connecting device also includes: A thermal insulation layer (6), the thermal insulation layer covering the outer surface of the third connecting pipe (5).

6. The connection device according to claim 5, characterized in that: The material of the thermal insulation layer (6) is a network of aluminum foil-covered glass fiber cloth.

7. The connection device according to claim 1, characterized in that: The outer surface of the telescopic part (2) is provided with a plurality of folds (7), or the outer surface of the telescopic part (2) is in a cylindrical spiral structure.

8. An engine turbocharger system, characterized in that: The connecting device according to any one of claims 1 to 7 further comprises: Turbocharger (8) and aftertreatment system (9); The turbocharger (8) is connected to the flange end of the connecting device; The post-processing system (9) is connected to the gas outlet structure of the connecting device.

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