CN219244940U

CN219244940U - Vibration test tool of vortex reduction device

Info

Publication number: CN219244940U
Application number: CN202223467237.XU
Authority: CN
Inventors: 陈磊磊; 陈海洋; 张寅敏
Original assignee: Suzhou Wanbo Ruitai Testing Technology Co ltd
Current assignee: Suzhou Wanbo Ruitai Testing Technology Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-23
Anticipated expiration: 2032-12-21

Abstract

The vibration test tool for the vortex reduction device comprises a base and a plurality of U-shaped pressing blocks, wherein annular protrusions are formed on the base, a plurality of supporting protrusions which are distributed at equal angles are formed on the periphery of each annular protrusion, a caulking groove is formed between every two adjacent supporting protrusions, threaded holes which are communicated with the caulking grooves are formed in each annular protrusion, and a jacking bolt is arranged in each threaded hole; the U-shaped pressing blocks are arranged in the caulking grooves in a one-to-one correspondence mode, and the opening ends of the U-shaped pressing blocks are outwards arranged to form a circular supporting structure. The vibration test tool for the vortex reduction device has the advantages of high structural rigidity and good frequency response characteristic; the supporting ring is supported by the U-shaped pressing block through the jacking bolts to simulate centrifugal force, so that the vortex reduction pipe is tightly attached to the supporting ring, and the working condition of the vortex reduction pipe in a rotating state is simulated for testing the mode shape of the vortex reduction device in a centrifugal force state.

Description

Vibration test tool of vortex reduction device

Technical Field

The utility model relates to the technical field of vibration tests, in particular to a vibration test tool of a vortex reduction device.

Background

The advanced aeroengine at the present stage adopts a mode of perforating holes between compressor stages to realize radial air entraining to axial direction, but in the radial air entraining process, because air flows from a high radius to a low radius, free vortex development is more severe, the generated pressure loss is larger, and the development of vortex can be effectively weakened by installing a vortex reduction device, so that the pressure loss in the radial inner flow process is reduced.

The vortex reduction device is designed to be put into production and needs to perform a plurality of performance tests, wherein the mode shape of the vortex reduction device under the centrifugal force state is a very important link. The existing test tool is complex in structure or can not meet the simulation centrifugal stress state.

Therefore, in order to solve the above-mentioned problems, it is necessary to design a vibration test tool for the vortex reduction device.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a vibration test tool for a vortex reduction device. To achieve the above and other related objects, the present utility model provides the following technical solutions: the vibration test tool for the vortex reduction device comprises a base and a plurality of U-shaped pressing blocks, wherein annular protrusions are formed on the base, a plurality of supporting protrusions which are distributed at equal angles are formed on the periphery of each annular protrusion, a caulking groove is formed between every two adjacent supporting protrusions, threaded holes which are communicated with the caulking grooves are formed in each annular protrusion, and a jacking bolt is arranged in each threaded hole; the U-shaped pressing blocks are arranged in the caulking grooves in a one-to-one correspondence mode, and the opening ends of the U-shaped pressing blocks are outwards arranged to form a circular supporting structure.

The preferable technical scheme is as follows: the vortex reduction device comprises a support ring and a plurality of vortex reduction tubes, wherein the support ring is sleeved on the outer side of the circular support structure, a plurality of U-shaped pressing blocks and a plurality of vortex reduction tube installation cavities are formed between the support ring, the vortex reduction tubes are installed in the vortex reduction tube installation cavities in a one-to-one correspondence mode, one ends of the vortex reduction tubes are abutted against the U-shaped pressing blocks, and the other ends of the vortex reduction tubes are abutted against the inner rings of the support ring.

The preferable technical scheme is as follows: the base is provided with a plurality of mounting holes for being connected with the vibrating table, and the plurality of mounting holes are distributed in an annular equal angle around the center of the annular bulge.

The preferable technical scheme is as follows: the jacking end of the jacking bolt is outwards arranged and props against the bottom end of the U-shaped pressing block.

The preferable technical scheme is as follows: the axis of the jacking bolt is coincident with the center of the annular bulge.

The preferable technical scheme is as follows: the base, the annular protrusion and the supporting protrusion are of an integrated structure.

Due to the application of the technical scheme, the utility model has the following beneficial effects:

the vibration test tool for the vortex reduction device has the advantages of high structural rigidity and good frequency response characteristic; the supporting ring is supported by the U-shaped pressing block through the jacking bolts to simulate centrifugal force, so that the vortex reduction pipe is tightly attached to the supporting ring, and the working condition of the vortex reduction pipe in a rotating state is simulated for testing the mode shape of the vortex reduction device in a centrifugal force state.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1. It should be noted that, in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang," and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

as shown in fig. 1, the vibration test fixture for the vortex reduction device provided by the utility model comprises a base 1 and a plurality of U-shaped pressing blocks 2, wherein annular protrusions 11 are formed on the base 1, a plurality of supporting protrusions 12 which are distributed at equal angles are formed on the periphery of each annular protrusion 11, a caulking groove 13 is formed between every two adjacent supporting protrusions 12, threaded holes 14 which are communicated with the caulking grooves 13 are formed in each annular protrusion 11, and a jacking bolt (not shown) is arranged in each threaded hole 14; the plurality of U-shaped pressing blocks 2 are arranged in the plurality of caulking grooves 13 in a one-to-one correspondence manner, and the opening ends of the plurality of U-shaped pressing blocks 2 are outwards arranged to form a circular supporting structure.

The vortex reduction device comprises a support ring and a plurality of vortex reduction tubes, the support ring is sleeved on the outer side of the circular support structure, a plurality of vortex reduction tube installation cavities are formed between the plurality of U-shaped pressing blocks 2 and the support ring, the plurality of vortex reduction tubes are installed in the plurality of vortex reduction tube installation cavities in a one-to-one correspondence mode, one ends of the vortex reduction tubes are propped against the U-shaped pressing blocks 2, and the other ends of the vortex reduction tubes are propped against the inner rings of the support ring.

The base 1 is provided with a plurality of mounting holes 15 for being connected with the vibrating table, and the plurality of mounting holes 15 are distributed in a ring shape at equal angles around the center of the ring-shaped bulge 11 so as to simulate the vibration state in the actual operation process.

The jacking end of the jacking bolt is outwards arranged and propped against the bottom end of the U-shaped pressing block 2. The axis of the jack bolt coincides with the center of the annular protrusion 11 to simulate the centrifugal force during actual operation.

The base 1, the annular bulge 11 and the supporting bulge 12 are of an integrated structure, so that the integral structural rigidity of the tool is improved, and the frequency response characteristic of the tool is improved.

Therefore, the utility model has the following advantages:

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations which can be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the present utility model shall be covered by the appended claims.

Claims

1. The utility model provides a subtract vortex device vibration test frock which characterized in that: the device comprises a base and a plurality of U-shaped pressing blocks, wherein annular protrusions are formed on the base, a plurality of supporting protrusions which are distributed at equal angles are formed on the periphery of each annular protrusion, a caulking groove is formed between every two adjacent supporting protrusions, threaded holes which are communicated with the caulking grooves are formed in each annular protrusion, and jacking bolts are arranged in the threaded holes; the U-shaped pressing blocks are arranged in the caulking grooves in a one-to-one correspondence mode, and the opening ends of the U-shaped pressing blocks are outwards arranged to form a circular supporting structure.

2. The vortex reduction device vibration test tool according to claim 1, wherein: the vortex reduction device comprises a support ring and a plurality of vortex reduction tubes, wherein the support ring is sleeved on the outer side of the circular support structure, a plurality of U-shaped pressing blocks and a plurality of vortex reduction tube installation cavities are formed between the support ring, the vortex reduction tubes are installed in the vortex reduction tube installation cavities in a one-to-one correspondence mode, one ends of the vortex reduction tubes are abutted against the U-shaped pressing blocks, and the other ends of the vortex reduction tubes are abutted against the inner rings of the support ring.

3. The vortex reduction device vibration test tool according to claim 1, wherein: the base is provided with a plurality of mounting holes for being connected with the vibrating table, and the plurality of mounting holes are distributed in an annular equal angle around the center of the annular bulge.

4. The vortex reduction device vibration test tool according to claim 1, wherein: the jacking end of the jacking bolt is outwards arranged and props against the bottom end of the U-shaped pressing block.

5. The vortex reduction device vibration test tool according to claim 1, wherein: the axis of the jacking bolt is coincident with the center of the annular bulge.

6. The vortex reduction device vibration test tool according to claim 1, wherein: the base, the annular protrusion and the supporting protrusion are of an integrated structure.