CN113029574B - Length-adjustable planar cascade test section wallboard - Google Patents
Length-adjustable planar cascade test section wallboard Download PDFInfo
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- CN113029574B CN113029574B CN202110305923.8A CN202110305923A CN113029574B CN 113029574 B CN113029574 B CN 113029574B CN 202110305923 A CN202110305923 A CN 202110305923A CN 113029574 B CN113029574 B CN 113029574B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
Abstract
The invention discloses a length-adjustable planar cascade test section wallboard. The wall plate of the plane blade grid test section comprises a rotating plate, a length adjuster, a guide rail pair and a translation plate; the rotating plate is a straight plate, the front end of the rotating plate is a fixed end, the fixed end is fixed at the outlet of the spray pipe through a pin shaft, and the rear end of the rotating plate is a free end; the upper surface of the rotating plate is provided with a guide rail. The translational plate is the other straight plate, a sliding block is fixed on the upper surface of the translational plate, and the sliding block is clamped on the guide rail. The fixed end of the length adjuster is arranged on the upper surface of the rotating plate, and the moving end of the length adjuster is connected with the rear end of the translation plate through a pin shaft. The length adjuster drives the sliding block on the translation plate to move along the guide rail, so that the translation plate moves back and forth. This plane cascade test section wallboard can realize test section wallboard length adjustment according to the experimental condition of cascade, and the simple operation, the location is simple, and the length adjustment precision is high, can save experimental preparation time, improves test efficiency.
Description
Technical Field
The invention belongs to the field of basic research test equipment of aero-engines, and particularly relates to a length-adjustable planar cascade test section wallboard.
Background
The aerodynamic profile of the rotor/stator blades determines the aerodynamic performance of the aircraft turbine (including fan/compressor and turbine) and the gas turbine, which are key components for maintaining the thermodynamic cycle and generating thrust. In order to design high-performance aero jet engines and gas turbines, the design method and flow characteristics of the turbine need to be studied on the cascade (two-dimensional blade profile) level. In order to carry out the test research on the flow aerodynamic characteristics of the cascade channels under the real flight condition on the ground, ground equipment capable of simulating parameters such as the flow Mach number, the Reynolds number and the like of the cascade channels in the actual flight must be built so as to ensure that a large amount of aerodynamic performance test research and technical verification can be carried out under the condition close to the actual working state, so that the flow mechanism, characteristics and rules in the cascade channels can be analyzed and researched, and a new design scheme is verified.
At present, a plane cascade test device is usually adopted for carrying out blade cascade tests of aeroengine impellers (comprising a fan/compressor and a turbine) and gas turbines at home and abroad, and because the range of the airflow angle at the inlet of the cascade test is large, the length of upper and lower wall plates at a test section is required to be adjusted according to the airflow angle at the inlet of the test section in order to ensure the uniformity of flow fields of a cascade test piece in front of and behind the cascade and also consider the requirement of exhausting at the outlet of the cascade under the condition of different airflow angles at the inlet of the cascade. The length adjustment of the upper wall plate and the lower wall plate of the existing plane cascade test section is realized by depending on the combination of a plurality of sets of wall plates with different lengths connected with the outlet of the spray pipe, and the length adjustment mode of the wall plates brings many defects that 1, when the test state is changed, the upper wall plate and the lower wall plate of the test section with different lengths need to be replaced, the operation is very inconvenient, the labor intensity is high, and the test efficiency is low; 2. the length of the upper and lower wall plates of the test section can not be freely and continuously adjusted, and partial test conditions can not be realized. 3. The length specifications of the upper wall plate and the lower wall plate are multiple, the combination working condition is complex, the flow channel step difference is easily caused, and the smooth quality is influenced.
At present, the development of a planar cascade test section wall plate with continuously adjustable length is urgently needed, the continuous adjustment of the lengths of the upper wall plate and the lower wall plate of the test section is realized under the conditions of different inlet airflow angles of the cascade test, and the requirements of basic research and technical verification of advanced aero-engine turbine and gas turbine blade cascade aerodynamic performance tests are met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a planar cascade test section wallboard with continuously adjustable length.
The invention relates to a length-adjustable planar cascade test section wallboard which is characterized by comprising a rotating plate, a length adjuster, a guide rail, a translation plate and a sliding block;
the rotating plate is a straight plate, the front end of the rotating plate is a fixed end, the fixed end is fixed at the outlet of the spray pipe through a pin shaft, and the rear end of the rotating plate is a free end; the upper surface of the rotating plate is provided with a guide rail;
the translational plate is the other straight plate, a sliding block is fixed on the upper surface of the translational plate, and the sliding block is clamped on the guide rail;
the fixed end of the length adjuster is arranged on the upper surface of the rotating plate, and the moving end of the length adjuster is connected with the rear end of the translation plate through a pin shaft;
the length adjuster drives the sliding block on the flat moving plate to move along the guide rail, so that the flat moving plate can move back and forth.
Further, the pin shaft is replaced by a hinge.
Furthermore, the upper surface of the rear section of the rotating plate is fixed with a rotary connecting seat, and a through hole in the rotary connecting seat is used for installing an angle adjuster, so that the angle adjustment of the rotating plate around a rear end pin shaft is realized.
Further, the length adjuster is a pull rod or an electric cylinder.
Furthermore, the guide rail is a linear guide rail.
Furthermore, the tail plate is installed at the rear end of the flat plate, a pull rod connecting seat is installed on the upper surface of the tail plate, and a through hole of the pull rod connecting seat is used for installing a pull rod to realize auxiliary support of the flat plate.
The length-adjustable planar cascade test section wall plate is arranged in the height-adjustable planar cascade test section, and is matched with the acoustic velocity spray pipe with the adjustable outlet height, so that the joint and continuous adjustment of the outlet height of the acoustic velocity spray pipe and the height and length of the upper wall plate and the lower wall plate of the test section can be conveniently and rapidly realized, and the requirements of various planar cascade acoustic velocity aerodynamic performance test researches and technical verifications are met.
The planar cascade test section wall plate with the continuously adjustable length is convenient and fast to operate, can conveniently and fast realize the continuous adjustment of the lengths of the upper wall plate and the lower wall plate of the planar cascade test section, can save the test preparation time, ensures the flow field quality and improves the test efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a length-adjustable planar cascade test segment wall panel of the present invention.
In the figure, 1, a rotating plate 2, a length adjuster 3, a guide rail 4, a rotating connecting seat 5, a pull rod connecting seat 6, a tail plate 7, a translation plate 8 and a sliding block.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the length-adjustable wall plate for the planar cascade test section comprises a rotating plate 1, a length adjuster 2, a guide rail 3, a translation plate 7 and a slide block 8;
the rotating plate 1 is a straight plate, the front end of the rotating plate 1 is a fixed end, the fixed end is fixed at the outlet of the spray pipe through a pin shaft, and the rear end of the rotating plate 1 is a free end; the upper surface of the rotating plate 1 is provided with a guide rail 3;
the translational plate 7 is another straight plate, a sliding block 8 is fixed on the upper surface of the translational plate 7, and the sliding block 8 is clamped on the guide rail 3;
the fixed end of the length regulator 2 is arranged on the upper surface of the rotating plate 1, and the moving end of the length regulator 2 is connected with the rear end of the translation plate 7 through a pin shaft;
the length adjuster 2 drives the sliding block 8 on the translation plate 7 to move along the guide rail 3, so that the translation plate 7 moves back and forth.
Further, the pin shaft is replaced by a hinge.
Furthermore, the upper surface of the rear section of the rotating plate 1 is fixed with a rotating connecting seat 4, and a through hole in the rotating connecting seat 4 is used for installing an angle adjuster, so that the angle adjustment of the rotating plate 1 around a rear end pin shaft is realized.
Further, the length adjuster 2 is a pull rod or an electric cylinder.
Further, the guide rail 3 is a linear guide rail.
Furthermore, the rear end of the flat movable plate 7 is provided with a tail plate 6, the upper surface of the tail plate 6 is provided with a pull rod connecting seat 5, and a through hole of the pull rod connecting seat 5 is used for installing a pull rod, so that the auxiliary support of the flat movable plate 7 is realized.
Example 1
The length-adjustable plane cascade test section wallboard of this embodiment is installed on the upper and lower wallboard of height-adjustable plane cascade test section, realizes that wallboard length adjustment, length control scope about the test section: 0 to 400 mm.
Although embodiments of the present invention have been disclosed above and described in considerable detail, this is not to be understood as a limitation of the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (5)
1. The length-adjustable planar cascade test section wallboard is characterized by comprising a rotating plate (1), a length adjuster (2), a guide rail (3), a translation plate (7) and a sliding block (8);
the rotating plate (1) is a straight plate, the front end of the rotating plate (1) is a fixed end, the fixed end is fixed at the outlet of the spray pipe through a pin shaft, and the rear end of the rotating plate (1) is a free end; the upper surface of the rotating plate (1) is provided with a guide rail (3);
the translational plate (7) is the other straight plate, a sliding block (8) is fixed on the upper surface of the translational plate (7), and the sliding block (8) is clamped on the guide rail (3);
the fixed end of the length regulator (2) is arranged on the upper surface of the rotating plate (1), and the moving end of the length regulator (2) is connected with the rear end of the translation plate (7) through a pin shaft;
the length regulator (2) drives the sliding block (8) on the translational plate (7) to move along the guide rail (3) to realize the forward and backward movement of the translational plate (7);
the upper surface of rotor plate (1) rear section fixed with swivelling joint seat (4), the through-hole on swivelling joint seat (4) is used for the installation angle regulator, realizes rotor plate (1) around the angle modulation of rear end round pin axle.
2. The length-adjustable planar cascade test section wall plate as claimed in claim 1, wherein the pin is replaced by a hinge.
3. The length-adjustable planar cascade test segment wall plate according to claim 1, wherein the length adjuster (2) is a tie rod or an electric cylinder.
4. The length-adjustable planar cascade test segment wall plate according to claim 1, characterized in that the guide rails (3) are linear guide rails.
5. The length-adjustable planar cascade test section wall plate as claimed in claim 1, wherein the rear end of the flat moving plate (7) is provided with a tail plate (6), the upper surface of the tail plate (6) is provided with a pull rod connecting seat (5), and the through hole of the pull rod connecting seat (5) is used for installing a pull rod to realize auxiliary support of the flat moving plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305923.8A CN113029574B (en) | 2021-03-23 | 2021-03-23 | Length-adjustable planar cascade test section wallboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110305923.8A CN113029574B (en) | 2021-03-23 | 2021-03-23 | Length-adjustable planar cascade test section wallboard |
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| CN113029574A CN113029574A (en) | 2021-06-25 |
| CN113029574B true CN113029574B (en) | 2022-06-24 |
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| CN104165070A (en) * | 2008-02-12 | 2014-11-26 | 三菱重工业株式会社 | Turbine blade-cascade endwall |
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| CN208443316U (en) * | 2018-06-11 | 2019-01-29 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of plane cascade test device that can continuously become blade tip clearance |
| CN110186688A (en) * | 2019-04-28 | 2019-08-30 | 南京航空航天大学 | Hole slot structure drawing-in type transonic turbine cascade turbine test platform leaf grating is bent tailgate |
| CN110530595A (en) * | 2019-07-19 | 2019-12-03 | 南京航空航天大学 | A kind of plane cascade test platform test section inlet system of the adjustable angle of attack |
| CN111289258A (en) * | 2020-03-20 | 2020-06-16 | 上海交通大学 | Static test device for straight reverse thrust cascade of aircraft engine |
| EP3772630A1 (en) * | 2019-08-06 | 2021-02-10 | Rolls-Royce Deutschland Ltd & Co KG | Heat exchanger blockage detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10962345B2 (en) * | 2018-05-23 | 2021-03-30 | General Electric Company | Tool and method for inspecting an annular space of an engine |
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2021
- 2021-03-23 CN CN202110305923.8A patent/CN113029574B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165070A (en) * | 2008-02-12 | 2014-11-26 | 三菱重工业株式会社 | Turbine blade-cascade endwall |
| CN104897406A (en) * | 2015-06-04 | 2015-09-09 | 大连海事大学 | Rotary stamping compressed rotor plane cascade experimental system |
| CN106404339A (en) * | 2016-11-28 | 2017-02-15 | 中国航空工业集团公司沈阳空气动力研究所 | Clipping wallboard device for transonic-speed test section |
| CN108775850A (en) * | 2018-06-11 | 2018-11-09 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of plane cascade test device and its test method that can continuously become blade tip clearance |
| CN208443316U (en) * | 2018-06-11 | 2019-01-29 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of plane cascade test device that can continuously become blade tip clearance |
| CN110186688A (en) * | 2019-04-28 | 2019-08-30 | 南京航空航天大学 | Hole slot structure drawing-in type transonic turbine cascade turbine test platform leaf grating is bent tailgate |
| CN110530595A (en) * | 2019-07-19 | 2019-12-03 | 南京航空航天大学 | A kind of plane cascade test platform test section inlet system of the adjustable angle of attack |
| EP3772630A1 (en) * | 2019-08-06 | 2021-02-10 | Rolls-Royce Deutschland Ltd & Co KG | Heat exchanger blockage detection |
| CN111289258A (en) * | 2020-03-20 | 2020-06-16 | 上海交通大学 | Static test device for straight reverse thrust cascade of aircraft engine |
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| CN113029574A (en) | 2021-06-25 |
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