CN112031923B

CN112031923B - Two-stage supercharging system connection mode

Info

Publication number: CN112031923B
Application number: CN202010788763.2A
Authority: CN
Inventors: 王振彪; 张炜
Original assignee: China North Engine Research Institute Tianjin
Current assignee: China North Engine Research Institute Tianjin
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-06-07
Anticipated expiration: 2040-08-07
Also published as: CN112031923A

Abstract

The invention provides a two-stage supercharging system connection mode which comprises a connecting pipe and a fixed pipe, wherein the end part of the connecting pipe is fixedly provided with a fixed plate, the end part of the fixed pipe is fixedly provided with a supporting plate, and the free end of a rubber pad arranged at the free end of the supporting plate is embedded in an embedding groove formed in the fixed plate; a plurality of limiting rods arranged on the side wall of the caulking groove of the fixed plate are inserted into the grooves arranged on the conical surface of the rubber pad; the lateral wall inner edge of caulking groove has set firmly a plurality of stoppers along its circumference, and the lateral wall inclined plane butt of stopper is in the free end inner edge of rubber pad. According to the two-stage supercharging system connection mode, the limiting rod is inserted into the groove, so that the inner side wall of the rubber pad is extruded and expanded, and the rubber pad is stably arranged inside the supporting plate; the inside wall of rubber pad receives the extrusion deformation of gag lever post and stopper, makes the rubber pad inner circle extruded between gag lever post, fixed plate and stopper, prevents that the skew damage condition from appearing in the rubber pad, guarantees the sealed effect between fixed plate and the backup pad.

Description

Two-stage supercharging system connection mode

Technical Field

The invention belongs to the technical field of electromechanics, relates to a two-stage supercharging system, and particularly relates to a connection mode of the two-stage supercharging system.

Background

The two-stage supercharging technology is a two-stage supercharging system formed by connecting a turbocharger or a mechanical supercharger in series with a second-stage supercharger. By applying the two-stage supercharging system, higher air inlet pressure can be obtained, and the dynamic property and plateau adaptability of the engine are improved.

However, when the traditional two-stage supercharging system is connected and matched for use, a connecting pipeline between the high-pressure stage supercharger and the low-pressure stage supercharger is sealed through the gasket, the gasket is easy to vibrate for a long time, the offset loss occurs, the phenomena of smoke leakage and air leakage occur, the sealing effect is poor, and the performance of the engine is reduced.

Disclosure of Invention

In view of this, the present invention provides a two-stage supercharging system connection method, which is convenient for the installation and fixation of the turbocharger and the pipeline, and improves the sealing effect between the turbocharger and the pipeline.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a two-stage supercharging system connection mode comprises a connecting pipe and a fixed pipe, wherein a fixed plate is fixedly arranged at the end part of the connecting pipe, a supporting plate is fixedly arranged at the end part of the fixed pipe, through holes are formed in the middle parts of the fixed plate and the supporting plate, and the fixed plate is fixedly connected with the supporting plate in a sealing mode;

the free end of the supporting plate is fixedly provided with an annular rubber pad, the rubber pad is positioned in an annular notch formed in the side wall of the through hole of the supporting plate, the outer edge of the free end of the rubber pad contracts inwards in a conical shape, and the conical free end of the rubber pad is embedded in a conical embedding groove formed in the fixing plate;

a plurality of grooves are formed in the conical surface of the rubber pad along the circumferential direction of the conical surface, a plurality of limiting rods are fixedly arranged on the side wall of the embedded groove of the fixing plate, and the limiting rods are inserted into the grooves;

the lateral wall of caulking groove is followed its circumference and has set firmly a plurality of stoppers, the lateral wall of stopper is the inside inclined plane that contracts of tip, the inclined plane butt of stopper in the free end inner edge of rubber pad.

Furthermore, the number of the limiting rods and the limiting blocks is two, and the two limiting rods and the two limiting blocks are symmetrically distributed relative to the fixing plate.

Further, the groove bottom of the groove is conical.

Furthermore, the free end of the limiting rod is a reverse taper bulge.

Further, be equipped with a plurality of fixed blocks along its circumference on the lateral wall of caulking groove, the fixed block is the triangle-shaped toper, the fixed block is located between gag lever post and the stopper.

Further, the fixing plate and the supporting plate are fixedly connected through a bolt and a nut, a spring is sleeved on the periphery of the bolt, and the spring is located between the nut and the supporting plate.

Compared with the prior art, the invention has the beneficial effects that:

(1) this two-stage supercharging system connected mode, gag lever post peg graft in the recess, make the bottom extrusion recess's of gag lever post lateral wall, make the inside wall of rubber pad receive the extrusion inflation, make the inside wall of rubber pad extrusion annular breach to make the stable inside of installing in the backup pad of rubber pad.

(2) This second grade turbocharging system connected mode, the inside wall of rubber pad receive the extrusion deformation of gag lever post and stopper, make the rubber pad inner circle by being extruded between gag lever post, fixed plate and stopper, prevent that the skew damage condition from appearing in the rubber pad, increase the stability of rubber pad between fixed plate and backup pad, guarantee the sealed effect between fixed plate and the backup pad.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an overall structure of a two-stage supercharging system according to the present invention;

FIG. 2 is a schematic cross-sectional view of a joint between a fixing plate and a supporting plate according to a two-stage supercharging system connection method of the present invention;

fig. 3 is a schematic cross-sectional structural view of a two-stage supercharging system connection mode of the present invention, wherein the two-stage supercharging system connection mode is a mode of connecting a fixing plate and a support plate by bolts.

Description of reference numerals:

1-a turbocharger body; 2, fixing a plate; 3-a support plate; 4-fixing the tube; 5-bolt; 6-protective cover; 7-rubber pad; 8-a limiting block; 9-a limiting rod; 10-fixing blocks; 11-a groove; 12-a mounting seat; 13-a spring; 14-a connecting tube; 15-caulking groove; 16-cylindrical grooves; 17-annular gap.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail below with reference to the following examples with reference to the attached drawings:

as shown in fig. 1 to 3, a two-stage supercharging system connection mode includes a connecting pipe 14 and a fixing pipe 4 with the same inner diameter, the connecting pipe 14 is communicated with a turbocharger body 1, in order to facilitate fixing a position, a plurality of mounting seats 12 are fixedly arranged on a side wall of the turbocharger body 1, and a protection cover 6 is connected to a pipeline opening end of the turbocharger body 1 in a threaded manner and used for preventing impurities from entering;

in order to communicate and fix the connecting pipe 14 and the fixed pipe 4, the end part of the connecting pipe 14 is fixedly provided with a fixed plate 2, the end part of the fixed pipe 4 is fixedly provided with a support plate 3, the middle parts of the fixed plate 2 and the support plate 3 are respectively provided with a through hole, the diameter of each through hole is the same as the inner diameter of the connecting pipe 14 and the inner diameter of the fixed pipe 4, and the fixed plate 2 is fixedly connected with the support plate 3 in a sealing way;

four corners of the fixed plate 2 and the supporting plate 3 are provided with jacks for inserting screws, the fixed plate 2 and the supporting plate 3 are fixedly connected through bolts 5 and nuts, in order to prevent the loose nuts from causing the insecure connection, the periphery of each bolt 5 is sleeved with a compression spring 13, the springs 13 are positioned between the nuts and the supporting plate 3, and the peripheries of the jacks at the end parts of the supporting plates 3 are provided with cylindrical grooves 16 for accommodating the springs 13;

in order to ensure the tightness of the connection between the fixed plate 2 and the supporting plate 3, the free end of the supporting plate 3 is fixedly provided with an annular rubber pad 7, the rubber pad 7 is positioned in an annular gap 17 formed on the side wall of the through hole of the supporting plate 3, in order to ensure the smoothness of gas circulation, the inner diameter of the rubber pad 7 is the same as the diameter of the through hole, the outer edge of the free end of the rubber pad 7 is contracted inwards in a conical shape, and the conical free end of the rubber pad 7 is embedded in a conical embedding groove 15 formed in the fixed plate 2;

in order to stabilize the position of the rubber pad 7, two grooves 11 are symmetrically arranged on the conical surface of the rubber pad 7, two limiting rods 9 are symmetrically arranged on the side wall of an embedding groove 15 of the fixed plate 2, the grooves 11 and the limiting rods 9 are symmetrically distributed to ensure the stress balance of the rubber pad 7, the limiting rods 9 are inserted into the grooves 11, the end parts of the limiting rods 9 are abutted against and extrude the groove bottoms of the grooves 11 to enable the groove bottoms to expand and deform, so that the inner side walls of the annular notches 17 are extruded to prevent the groove bottoms from shifting, in order to enable the expanded volume to be larger, the groove bottoms of the grooves 11 are conical, and the free ends of the limiting rods 9 are inverted conical protrusions;

in order to further ensure the sealing performance of the rubber pad 7, a plurality of limiting blocks 8 are fixedly arranged on the inner edge of the side wall of the embedded groove 15 along the circumferential direction of the embedded groove, the outer side wall of each limiting block 8 is an inclined surface with an inward-contracted end part, in the assembling process, the inclined surface of each limiting block 8 is abutted against and extrudes the inner edge of the free end of the rubber pad 7, and the inner edge of the end part of the rubber pad 7 is extruded to the outer periphery so as to be confined between the limiting rod 9 and the limiting block 8 and cannot move;

in order to further increase the positioning stability, a plurality of fixing blocks 10 are arranged on the side wall of the embedded groove 15 along the circumferential direction of the side wall, the fixing blocks 10 are in a triangular cone shape and are located between the limiting rod 9 and the limiting block 8, and the fixing blocks 10 abut against the end portion of the rubber pad 7, so that the extrusion effect on the rubber pad 7 can be increased, and meanwhile, the effect of increasing friction force is achieved.

Note: the fixing means not explicitly described herein may be a common fixing means such as a screw connection, an adhesive, or a welding, as required.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A two-stage supercharging system connection mode comprises a connecting pipe (14) and a fixed pipe (4), and is characterized in that a fixed plate (2) is fixedly arranged at the end part of the connecting pipe (14), a supporting plate (3) is fixedly arranged at the end part of the fixed pipe (4), through holes are formed in the middle parts of the fixed plate (2) and the supporting plate (3), and the fixed plate (2) is fixedly connected with the supporting plate (3) in a sealing manner;

the free end of the supporting plate (3) is fixedly provided with an annular rubber pad (7), the rubber pad (7) is positioned in an annular notch (17) formed in the side wall of the through hole of the supporting plate (3), the outer edge of the free end of the rubber pad (7) is contracted inwards in a conical shape, and the conical free end of the rubber pad (7) is embedded in a conical embedding groove (15) formed in the fixing plate (2);

a plurality of grooves (11) are formed in the conical surface of the rubber pad (7) along the circumferential direction of the conical surface, a plurality of limiting rods (9) are fixedly arranged on the side wall of the caulking groove (15) of the fixing plate (2), and the limiting rods (9) are inserted into the grooves (11);

a plurality of limiting blocks (8) are fixedly arranged along the circumferential direction of the inner edge of the side wall of the embedded groove (15), the outer side wall of each limiting block (8) is an inclined surface with an inward-contracted end part, and the inclined surface of each limiting block (8) is abutted against the inner edge of the free end of the rubber pad (7);

be equipped with a plurality of fixed blocks (10) along its circumference on the lateral wall of caulking groove (15), fixed block (10) are the triangle-shaped toper, fixed block (10) are located between gag lever post (9) and stopper (8).

2. The two-stage supercharging system connection method according to claim 1, wherein: the quantity of gag lever post (9) and stopper (8) is two, two gag lever post (9) and two stopper (8) homogeneous phase is for fixed plate (2) symmetric distribution.

3. The two-stage supercharging system connection method according to claim 1, wherein: the groove bottom of the groove (11) is conical.

4. The two-stage supercharging system connection method according to claim 1, wherein: the free end of the limiting rod (9) is a reverse taper bulge.

5. The two-stage supercharging system connection method according to claim 1, wherein: fixed plate (2) with through bolt (5) and nut fixed connection between backup pad (3), the periphery cover of bolt (5) is equipped with spring (13), spring (13) are located between nut and backup pad (3).