CN111963483A

CN111963483A - Elastically-connected two-stage supercharging pipeline diffuser

Info

Publication number: CN111963483A
Application number: CN202010789618.6A
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: 2020-11-20
Anticipated expiration: 2040-08-07
Also published as: CN111963483B

Abstract

The invention provides an elastically-connected two-stage supercharging pipeline diffuser which comprises a sleeve pipe, wherein the sleeve pipe is coaxially and fixedly connected with a diffuser body; two arc-shaped fixing plates are arranged in the sleeve along the axial direction of the sleeve, two sliding rods are vertically inserted into the side wall of the pipeline in a sliding manner, the end parts of the sliding rods are fixedly connected with a positioning plate, compression springs are sleeved on the peripheries of the sliding rods, and the springs are positioned between the fixing plates and the sleeve; the inner side wall of the sleeve is fixedly provided with a guide rod which is inserted in the insertion hole of the fixing plate in a sliding manner. The elastically connected two-stage supercharging pipeline diffuser limits the position of a two-stage supercharging pipeline from the circumferential direction through a compression spring and an arc-shaped fixing plate, so that the two-stage supercharging pipeline is stably clamped between the two fixing plates, and the position of the two-stage supercharging pipeline is limited from the axial direction through a guide rod; the friction force is increased by the elastic gasket arranged on the inner wall of the fixing plate and the rubber block arranged in the groove, a certain buffering effect is achieved, and the secondary pressurizing pipeline clamped by the fixing plate is prevented from loosening due to mechanical vibration.

Description

Elastically-connected two-stage supercharging pipeline diffuser

Technical Field

The invention belongs to the technical field of electromechanics, and relates to a diffuser structure, in particular to an elastically-connected two-stage supercharging pipeline diffuser.

Background

The air flow speed at the outlet of the two-stage supercharging system is high, and if the air flow speed is reduced and the air pressure is further improved, a diffuser is selected to increase the flow area, so that the diffusion effect is obvious. The outlet pipeline of the secondary supercharging system is connected with the diffuser, the pipeline is complex in spatial arrangement structure, the thermal deformation is serious in the working state, and the vibration of an engine and the supercharger easily causes the looseness of the joint of the secondary supercharging system and the diffuser, so that the faults of air leakage, pressure loss and the like are caused.

Disclosure of Invention

In view of the above, the present invention is directed to overcome the above-mentioned drawbacks of the prior art, and to provide an elastically connected two-stage supercharging pipeline diffuser, which facilitates the installation and connection of a two-stage supercharging system and the diffuser.

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

an elastically connected two-stage supercharging pipeline diffuser comprises a sleeve, wherein the sleeve is coaxially and fixedly connected with a diffuser body, and the inner diameter of the sleeve is larger than the diameter of a through hole formed in the middle of the diffuser body;

the inner part of the sleeve is provided with two arc-shaped fixed plates along the axial direction, the side, close to the wall, of the sleeve of each arc-shaped positioning plate is a convex surface, two sliding rods are vertically inserted into the side wall of the pipeline in a sliding mode, the end parts of the sliding rods are fixedly connected with the positioning plates, compression springs are sleeved on the peripheries of the sliding rods, and the springs are located between the fixed plates and the sleeve;

the guide rod is fixedly arranged on the inner side wall of the sleeve and is parallel to the slide rod, the guide rod is located at the free end of the sleeve, and the guide rod is inserted into the insertion hole formed in the fixing plate in a sliding mode.

Furthermore, a plurality of elastic gaskets are fixedly arranged on the side wall of the concave surface of the two fixing plates, and the elastic gaskets are uniformly distributed on the side wall of the concave surface of the fixing plate.

Further, the section of the elastic gasket is of an S-shaped structure.

Furthermore, a groove is formed in the side wall of the free end of the guide rod and located on one side, close to the diffuser body, of the guide rod, and a plurality of rubber blocks are fixedly arranged in the groove.

Furthermore, the rubber blocks are uniformly distributed on the upper side wall and the lower side wall of the groove, the positions of the rubber blocks arranged on the upper side wall and the lower side wall are opposite, and the number of the rubber blocks is more than or equal to three.

Further, the free end of the rubber block is wedge-shaped.

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

(1) this elastic connection's second grade booster pipe diffuser, through compression spring and curved fixed plate from the position of circumference limited second grade booster pipe, produce the interior thrust that lasts through the spring to the fixed plate, make second grade booster pipe by firm centre gripping between two fixed plates to from axial limited second grade booster pipe's position through the guide arm.

(2) This elastic connection's second grade booster pipeline diffuser, set up the block rubber through the elastic gasket that the fixed plate inner wall was established in with the recess and increase frictional force, avoid second grade booster pipeline to take place to slide, keep the steadiness of its position, elastic gasket and block rubber can play certain cushioning effect simultaneously, avoid being become flexible because of mechanical vibration by the second grade booster pipeline of fixed plate centre gripping.

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 diagram of the overall structure of a resiliently coupled two-stage booster duct diffuser according to the present invention;

FIG. 2 is a schematic cross-sectional view of a resiliently coupled two-stage booster duct diffuser according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic cross-sectional view of a resiliently coupled two-stage booster duct diffuser according to the present invention.

Description of reference numerals:

1-a diffuser body; 2-a sleeve; 21-a slide hole; 22-cylindrical grooves; 3-a slide bar; 4-diffuser blades; 5-pores; 6, fixing a plate; 61-a jack; 7-a spring; 8-a guide rod; 9-a through hole; 10-a groove; 11-a rubber block; 12-resilient gasket.

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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 4, an elastically connected two-stage supercharging pipeline diffuser comprises a sleeve 2, the sleeve 2 is coaxially and fixedly connected with a diffuser body 1, the inner diameter of the sleeve 2 is larger than the diameter of a through hole 9 formed in the middle of the diffuser body 1, the two-stage supercharging pipeline is inserted into the through hole 9 until extending into the inner cavity of the sleeve 2, a plurality of diffuser blades 4 are fixedly arranged on the side wall of the diffuser body 1, the diffuser blades 4 are radially and uniformly distributed along a spoke type, a plurality of air holes 5 are formed in the outer ring of the diffuser body 1 along the circumferential direction, and the air holes 5 are formed between adjacent diffuser blades 4 and extend along the axial direction of the diffuser body 1;

in order to fix the position of the secondary supercharging pipeline, two symmetrical arc-shaped fixing plates 6 are arranged inside the sleeve 2 along the axial direction of the sleeve, the side, close to the wall, of the sleeve 2 of each arc-shaped positioning plate is a convex surface, the diameter of the concave surface of each arc-shaped positioning plate is matched with the outer diameter of the secondary supercharging pipeline to be clamped, two sliding rods 3 are vertically inserted into the side wall of the pipeline in a sliding mode, the positions of the two sliding rods 3 are symmetrical, the end portions of the sliding rods 3 are fixedly connected with the middle of the convex surface of the positioning plate, compression springs 7 are sleeved on the peripheries of the sliding rods 3, the springs 7 are located between the fixing plates 6 and the sleeve 2 and used for providing inward thrust for the fixing plates 6, and cylindrical grooves 22 for;

in order to increase the friction force between the fixing plates 6 and the outer walls of the inserted two-stage supercharging pipelines, a plurality of elastic gaskets 12 are fixedly arranged on the side walls of the concave surfaces of the two fixing plates 6, the elastic gaskets 12 are uniformly distributed on the side walls of the concave surfaces of the fixing plates 6, and in order to increase the buffering amplitude, the sections of the elastic gaskets 12 are of S-shaped structures;

two guide rods 8 are symmetrically and fixedly arranged on the inner side wall of the sleeve 2, the two guide rods 8 are parallel to the slide rod 3, the guide rods 8 are positioned at the free end of the sleeve 2, the guide rods 8 are slidably inserted into the insertion holes 61 formed in the fixed plate 6, and the guide rods 8 and the slide rod 3 can provide a guiding effect for the movement of the fixed plate 6;

in order to increase the stability of location between second grade supercharged pipeline and guide arm 8, seted up recess 10 on the lateral wall of 8 free ends of guide arm, this recess 10 is located guide arm 8 and is close to one side of diffuser body 1 for the tip mouth of pipe of joint second grade supercharged pipeline, a plurality of rubber blocks 11 have set firmly in the recess 10, a plurality of rubber blocks 11 equipartitions are in the last lateral wall and the lower lateral wall of recess 10, it is relative and the equal more than or equal to three of the quantity of rubber block 11 with the relative position of the rubber block 11 that the lower lateral wall established, for making the grafting of second grade supercharged pipeline easier, the free end of rubber block 11 is the wedge.

During the assembly process, firstly, the spring 7 is sleeved on the periphery of the slide rod 3, then the slide rods 3 fixedly arranged on the convex surfaces of the two fixing plates 6 are respectively inserted into the slide holes 21 formed on the side wall of the pipeline, meanwhile, the guide rod 8 is inserted into the insertion hole 61 formed on the fixing plate 6, the two fixing plates 6 are pushed to move towards the direction close to the sleeve 2, when the gap between the two fixing plates is enough to accommodate the secondary supercharging pipeline, the end part of the secondary supercharging pipeline is inserted into the through hole 9 of the diffuser body 1 until the end part enters between the two fixing plates 6, the end part is inserted into the groove 10 of the guide rod 8, the fixing plate 6 is loosened, the concave side wall provided with the elastic gasket 12 extrudes the secondary supercharging pipeline, and the secondary supercharging pipeline is stably clamped between the two fixing plates.

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. The two-stage supercharging pipeline diffuser in elastic connection is characterized by comprising a sleeve (2), wherein the sleeve (2) is coaxially and fixedly connected with a diffuser body (1), and the inner diameter of the sleeve (2) is larger than the diameter of a through hole (9) formed in the middle of the diffuser body (1);

two arc-shaped fixing plates (6) are arranged in the sleeve (2) along the axial direction of the sleeve, the side, close to the wall, of the sleeve (2) of each arc-shaped positioning plate is a convex surface, two sliding rods (3) are vertically inserted into the side wall of the pipeline in a sliding mode, the end portions of the sliding rods (3) are fixedly connected with the positioning plates, compression springs (7) are sleeved on the peripheries of the sliding rods (3), and the springs (7) are located between the fixing plates (6) and the sleeve (2);

the guide rod (8) is fixedly arranged on the inner side wall of the sleeve (2), the guide rod (8) is parallel to the sliding rod (3), the guide rod (8) is located at the free end of the sleeve (2), and the guide rod (8) is inserted into an insertion hole (61) formed in the fixing plate (6) in a sliding mode.

2. The resiliently coupled two-stage booster duct diffuser of claim 1, wherein: a plurality of elastic gaskets (12) are fixedly arranged on the concave side walls of the two fixing plates (6), and the elastic gaskets (12) are uniformly distributed on the concave side walls of the fixing plates (6).

3. The resiliently coupled two-stage booster duct diffuser of claim 2, wherein: the section of the elastic gasket (12) is of an S-shaped structure.

4. The resiliently coupled two-stage booster duct diffuser of claim 1, wherein: the diffuser is characterized in that a groove (10) is formed in the side wall of the free end of the guide rod (8), the groove (10) is located on one side, close to the diffuser body (1), of the guide rod (8), and a plurality of rubber blocks (11) are fixedly arranged in the groove (10).

5. The resiliently coupled two-stage booster duct diffuser of claim 4, wherein: the rubber blocks (11) are uniformly distributed on the upper side wall and the lower side wall of the groove (10), the positions of the rubber blocks (11) arranged on the upper side wall and the lower side wall are opposite, and the number of the rubber blocks (11) is more than or equal to three.

6. The resiliently coupled two-stage booster duct diffuser of claim 5, wherein: the free end of the rubber block (11) is wedge-shaped.