CN214465117U - Wide-chord hollow fan blade with pressure sensing holes for test aero-engine - Google Patents
Wide-chord hollow fan blade with pressure sensing holes for test aero-engine Download PDFInfo
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- CN214465117U CN214465117U CN202120359168.7U CN202120359168U CN214465117U CN 214465117 U CN214465117 U CN 214465117U CN 202120359168 U CN202120359168 U CN 202120359168U CN 214465117 U CN214465117 U CN 214465117U
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- pressure sensing
- fan blade
- blade
- detection pipeline
- pressure
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- 238000012360 testing method Methods 0.000 title claims description 7
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 229920001187 thermosetting polymer Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses an experimental aeroengine wide string hollow fan blade of using with pressure sensing hole, including the fan blade main part, the fan blade main part includes the leaf basin face and the leaf back, is provided with the pressure sensing hole on the leaf basin face, and the pressure sensing hole is provided with the detection pipeline end, and the fan blade main part is inside to be separated by the baffle and to form the cavity structure, and the cavity structure includes trapezoidal cavity and central cavity, is provided with the pressure detection pipeline in the central cavity, pressure detection pipeline and detection pipeline end-to-end connection, the utility model discloses can measure the pressure value along the different positions of leaf height between the blade to can use more accurate numerical analysis engine performance can not be heated under blade operational environment and soften, drop and can not cause the damage to the engine by the suction engine, can save the cost when satisfying the requirement, the utility model discloses simple structure, practical convenient, job stabilization, And (4) safety.
Description
Technical Field
The utility model relates to a fan blade field especially relates to an experimental aeroengine wide-chord hollow fan blade with pressure sensing hole.
Background
The fan is positioned at the forefront of the turbofan engine and applies work to incoming flow, so that the effect of air pressurization is achieved. The supercharging ratio can be set according to requirements when the engine is designed. After the tester is manufactured, the designed pressure ratio needs to be verified, and therefore, the pressure at each station needs to be measured. Due to increasingly strict environmental protection policies and increasingly competitive aviation transportation markets, the engine with the large bypass ratio is continuously developed due to the advantages of low oil consumption and low emission, and the fan blades are also developed towards the direction of the wide-chord hollow blades;
the variable length widen of fan blade leads to the flow field activity space grow between the blade, need measure the air current pressure between the blade, know the motion law of air current between the fan, analyze its influence to aspects such as engine surge, gas circuit performance, and the fan is as rotor mechanism, can not place fixed probe between the blade, regard as supercharging device again, install additional along with blade pivoted attached probe then can exert an influence to supercharging performance, for solving above-mentioned problem, provide one kind and do not change original fan performance design index, can obtain measured data's solution again.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the technical problem who exists among the prior art, provide an experimental aeroengine broad-string hollow fan blade with pressure sensing hole.
In order to achieve the above purpose, the utility model provides a technical scheme is: the wide-chord hollow fan blade with the pressure sensing holes for the test aero-engine comprises a fan blade main body, wherein the fan blade main body comprises a blade basin surface and a blade back surface, the blade basin surface is provided with the pressure sensing holes, the pressure sensing holes comprise a first pressure sensing hole, a second pressure sensing hole and a third pressure sensing hole which are distributed along the blade height, the pressure sensing holes are provided with tail ends of detection pipelines, the tail ends of the detection pipelines are made of thermosetting plastic, the inside of the fan blade main body is separated by a partition plate to form a cavity structure, the cavity structure comprises a trapezoidal cavity and a central cavity, pressure detection pipelines are arranged in the central cavity, air guide parts of the pressure detection pipelines, located in the central cavity, are made of heat-resistant rubber materials, and the pressure detection pipelines are connected with the tail ends of the detection pipelines.
Preferably, the detection pipeline end comprises a detection pipeline end, a second detection pipeline end and a third detection pipeline end, and the pressure detection pipeline comprises a detection pipeline, a second detection pipeline and a third detection pipeline.
Preferably, two ends of the fan blade body are called a blade root and a blade tip, the pressure sensing holes are distributed along the blade height, the distance between the first pressure sensing hole and the blade root is 10% to 30% of the blade height, the distance between the second pressure sensing hole and the blade root is 50% of the blade height, and the distance between the third pressure sensing hole and the blade tip is 10% to 30% of the blade height.
Preferably, the fan blade main body is in a twisted shape, and the cavity structures are symmetrically distributed along the central axis of the tangent plane of the fan blade main body
The utility model discloses beneficial effect:
1. the three pressure detecting holes distributed along the blade height of the utility model can measure the pressure values at different positions along the blade height between the blades by the hollow fan blade of the engine for testing, thereby more accurate numerical analysis of the engine performance can be used,
2. the utility model discloses well built-in pipeline of pressure detection pipeline is made by heat-resisting rubber, and it is more convenient to arrange, and the pressure detection pipeline end is made by thermosetting type plastics, can satisfy required intensity and rigidity in pressure sensing hole, simple to operate, and heat-resisting rubber and thermosetting type plastics low price can not be heated under blade operational environment and soften, drop and can not cause the damage to the engine by the suction engine, can save the cost when satisfying the requirement.
3. The utility model discloses simple structure, it is practical convenient, job stabilization, safety.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
FIG. 1 is a schematic diagram of the overall structure of the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the cavity structure of the preferred embodiment of the present invention;
fig. 3 is a partial cross-sectional view of the back of a fan blade according to a preferred embodiment of the present invention.
The attached drawings are marked as follows:
1-fan blade body 2-blade basin face 3-first pressure sensing hole 4-second pressure sensing hole 5-third pressure sensing hole 6-partition 7-trapezoidal cavity 8-central cavity 9-pressure detection pipeline 10-first detection pipeline tail end 11-second detection pipeline tail end 12-third detection pipeline tail end 13-first detection pipeline 14-second detection pipeline 15-third detection pipeline 16-blade back.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 3, the preferred embodiment of the present invention includes a fan blade main body 1, the fan blade main body 1 includes a basin surface 2 and a back surface 16, a pressure sensing hole is disposed on the basin surface 2, the pressure sensing hole includes a first pressure sensing hole 3, a second pressure sensing hole 4 and a third pressure sensing hole 5 distributed along the height of the fan blade, the pressure sensing hole is provided with a detection pipe end, the detection pipe end is made of thermosetting plastic, the detection pipe end is bonded to the pressure sensing hole so as to detect the pressure between the fan blades 1, the inside of the fan blade main body 1 is separated by a partition plate 6 to form a cavity structure, the cavity structure includes a trapezoidal cavity 7 and a central cavity 8, a pressure detection pipe 9 is disposed in the central cavity 8, the air guide portion of the pressure detection pipe 9 located in the central cavity 8 is made of heat-resistant rubber material, since the central cavity 8 is located at the center in the chord direction and has the largest space, and is located at the most suitable position for detecting the pressure, the pressure detection pipeline 9 is arranged in the central cavity 8, and the pressure detection pipeline 9 is connected with the tail end of the detection pipeline.
The utility model discloses in, at first, fan blade main part 1 does not take the blade of pressure detection function to derive by normal use, through drilling on normal blade central cavity 8, fill in pressure detection pipeline 9 by the pressure sensing hole again, the detection pipeline end that thermosetting plastic made is glued on the hole with powerful glue, later can scrape unnecessary powerful glue and repair the type around the hole, reduce the influence of protrusion to blade aerodynamic performance, can be accurate measure the pressure between the blade, secondly, because pressure detection pipeline 9 is cheap product, if there is the needs of dismantling the detection pipeline, can directly destroy the detection pipeline end that thermosetting plastic made, finally, the blade derives from normal blade, and the detection hole is very little does not influence normal use.
The utility model discloses a three pressure detection hole along leaf height distribution, make the utility model discloses can measure the pressure value at the different positions of leaf height between the blade, thereby can use more accurate numerical analysis engine performance, and pressure detection pipeline 9 is made by heat-resisting rubber, and it is more convenient to arrange, and the pressure detection pipeline end is made by thermosetting type plastics, can satisfy required intensity and rigidity in pressure sensing hole, simple to operate, and heat-resisting rubber and thermosetting type plastics low price can not be heated under blade operational environment and soften, drop and can not cause the damage to the engine by the suction engine, can save the cost when satisfying the requirement, the utility model discloses simple structure, practical convenient, job stabilization, safety.
As a preferred embodiment of the present invention, it may also have the following additional technical features:
in this embodiment, survey the pipeline end including surveying pipeline end 10, No. two survey pipeline end 11 and No. three survey pipeline end 12, survey pipeline end 10, No. two survey pipeline end 11 and No. three survey pipeline end 12 and bond respectively on a pressure sensing hole 3, No. two pressure sensing holes 4, No. three pressure sensing holes 5, pressure detection pipeline 9 includes that a surveys pipeline 13, No. two survey pipeline 14, No. three survey pipeline 15, a survey pipeline 13, No. two survey pipeline 14, No. three survey pipeline 15 and survey pipeline end 10, No. two survey pipeline end 11 and No. three respectively and survey pipeline end 12 and be connected, can be more quick convenient survey the pressure value along the different positions of leaf height between the blade, increase work efficiency.
In this embodiment, blade root and apex are called to fan blade main part 1 both ends, the pressure sensing hole distributes along the leaf height, No. 3 pressure sensing holes are 10% to 30% leaf height apart from the blade root, No. two pressure sensing holes 4 are 50% leaf height apart from the blade root, No. three pressure sensing holes 5 are 10% to 30% leaf height apart from the apex, through the three pressure detection hole along the leaf height more even that distributes, make the utility model discloses can be more even measure the pressure value along the different positions of leaf height between the blade to can detect more accurate numerical value, improve the effect of analysis engine performance.
In this embodiment, the fan blade body 1 is a twisted shape, and the cavity structures are symmetrically distributed along the central axis of the section of the fan blade body 1, so that the mass distribution of the fan blade body 1 is more uniform, the generation of unnecessary torque is reduced, the local stress is reduced, and the working state of the fan blade body 1 is more stable.
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.
Claims (4)
1. The utility model provides an experimental aeroengine wide-chord hollow fan blade with pressure sensing hole which characterized in that: comprises a fan blade main body (1), the fan blade main body (1) comprises a blade basin surface (2) and a blade back surface (16), the leaf basin surface (2) is provided with pressure sensing holes, the pressure sensing holes comprise a first pressure sensing hole (3), a second pressure sensing hole (4) and a third pressure sensing hole (5) which are distributed along the leaf height, the pressure sensing hole is provided with a detection pipeline tail end which is made of thermosetting plastic, the interior of the fan blade main body (1) is separated by a clapboard (6) to form a cavity structure, the cavity structure comprises a trapezoidal cavity (7) and a central cavity (8), a pressure detection pipeline (9) is arranged in the central cavity (8), the air guide part of the pressure detection pipeline (9) positioned in the central cavity (8) is made of heat-resistant rubber materials, and the pressure detection pipeline (9) is connected with the tail end of the detection pipeline.
2. The wide-chord hollow fan blade with the pressure sensing holes for the test aeroengine as claimed in claim 1, characterized in that: the pressure detection pipeline (9) comprises a first detection pipeline (13), a second detection pipeline (14) and a third detection pipeline (15).
3. The wide-chord hollow fan blade with the pressure sensing holes for the test aeroengine as claimed in claim 1, characterized in that: the fan blade is characterized in that two ends of the fan blade body (1) are called a blade root and a blade tip, the pressure sensing holes are distributed along the blade height, the distance from the first pressure sensing hole (3) to the blade root is 10-30% of the blade height, the distance from the second pressure sensing hole (4) to the blade root is 50% of the blade height, and the distance from the third pressure sensing hole (5) to the blade tip is 10-30% of the blade height.
4. The wide-chord hollow fan blade with the pressure sensing holes for the test aeroengine as claimed in claim 1, characterized in that: the fan blade main body (1) is in a twisted shape, and the cavity structures are symmetrically distributed along the central axis of the section of the fan blade main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120359168.7U CN214465117U (en) | 2021-02-06 | 2021-02-06 | Wide-chord hollow fan blade with pressure sensing holes for test aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120359168.7U CN214465117U (en) | 2021-02-06 | 2021-02-06 | Wide-chord hollow fan blade with pressure sensing holes for test aero-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465117U true CN214465117U (en) | 2021-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120359168.7U Expired - Fee Related CN214465117U (en) | 2021-02-06 | 2021-02-06 | Wide-chord hollow fan blade with pressure sensing holes for test aero-engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465117U (en) |
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2021
- 2021-02-06 CN CN202120359168.7U patent/CN214465117U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |