CN109538307B - Adjust air current machine casket - Google Patents

Adjust air current machine casket Download PDF

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Publication number
CN109538307B
CN109538307B CN201811538286.3A CN201811538286A CN109538307B CN 109538307 B CN109538307 B CN 109538307B CN 201811538286 A CN201811538286 A CN 201811538286A CN 109538307 B CN109538307 B CN 109538307B
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China
Prior art keywords
adjustable
casing
blade
adjustable blade
vane
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CN201811538286.3A
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CN109538307A (en
Inventor
王雅谋
王相平
肖珊
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AECC Shenyang Engine Research Institute
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AECC Shenyang Engine Research Institute
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Priority to CN201811538286.3A priority Critical patent/CN109538307B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/042—Air intakes for gas-turbine plants or jet-propulsion plants having variable geometry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/057—Control or regulation

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The application belongs to the technical field of aero-engine design, and particularly relates to an airflow adjusting casing which comprises an adjustable blade (1) and a casing body, wherein the adjustable blade is divided into an upper adjustable blade (4) and a lower adjustable blade (5), and the upper adjustable blade (4) and the lower adjustable blade (5) can rotate respectively; the separation device (8) is arranged between the upper adjustable blade (4) and the lower adjustable blade (5), and the separation device (8) is connected with the fixed support plate (3). The utility model provides an adjust air current machine casket is through a plurality of adjustable blades that the segmentation set up in the footpath, and more careful accent has received the air current of adjustable blade export direction to better and rotor blade's profile matching.

Description

Adjust air current machine casket
Technical Field
The application belongs to the technical field of aero-engine design, and particularly relates to an airflow adjusting casing.
Background
In order to improve the surge margin of the engine, measures such as multiple rotors, air bleed, rotor blade front stator blade rotation (hereinafter referred to as adjustable blade) and the like are generally adopted. The conventional measure that the angle of a stator blade in front of a rotor blade can be rotated is that the whole adjustable blade rotates along the blade height at the same time under a common condition, namely, the adjustable blade 1 rotates around an upper shaft neck and a lower shaft neck under a certain rotating speed, so that the airflow direction of an inlet of the rotor blade is changed, the airflow attack angle is more matched with the blade profile of the rotor blade, and the purpose of improving the surge margin of an engine is achieved as shown in figure 2.
When the measure of improving the surge margin of the engine by using the adjustable blade in fig. 2 is adopted, the angle of the airflow change of the rotor blade from the blade root to the blade tip is the same, and actually, the front edge of the rotor blade in pneumatic design is spatially twisted (has a spiral angle), and along with the change of the rotating speed, the airflow angle adjusted by the adjustable blade is not matched with the blade profile of the rotor blade, so that the limitation exists.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The utility model aims at providing an adjust air current machine casket to solve the unmatched problem of adjustable blade to the direction of air current regulation and rotor blade profile.
The technical scheme of the application is as follows:
a tuning flow cartridge for tuning the flow direction of a rotor blade inlet air, comprising:
the adjustable blade is rotatably connected between the upper casing and the lower casing;
the airflow regulating casing specifically further comprises:
the adjustable blades are divided into an upper adjustable blade and a lower adjustable blade, and the upper adjustable blade and the lower adjustable blade can rotate respectively;
the separation device is arranged between the upper adjustable blade and the lower adjustable blade and is connected with the fixed support plate.
According to at least one embodiment of the present application, the separating device includes a bracket and a shaft sleeve connected to one end of the bracket, the other end of the bracket is connected to the fixing support plate, and the shaft sleeve is rotatably connected to the upper adjustable blade and the lower adjustable blade, respectively.
According to at least one embodiment of the present application, the means of attachment of the bracket to the fixation plate includes a fixed attachment or a removable attachment.
According to at least one embodiment of the application, the fixed connection comprises welding or riveting.
According to at least one embodiment of the application, the detachable connection comprises a bolt connection.
According to at least one embodiment of the present application, the upper adjustable blade and the lower adjustable blade respectively have a rotation shaft or a rotation axis, and both ends of the rotation shaft or the rotation axis are respectively connected to the upper casing and the shaft sleeve in a matching manner or connected to the lower casing and the shaft sleeve in a matching manner.
According to at least one embodiment of the application, two bearings are arranged in the shaft sleeve, one of the two bearings is in fit connection with one end of the rotating shaft of the upper adjustable blade, and the other of the two bearings is in fit connection with one end of the rotating shaft of the lower adjustable blade.
According to at least one embodiment of the present application, a driving device is respectively disposed at one end of the upper adjustable blade connected to the upper casing and one end of the lower adjustable blade connected to the lower casing, and is used for driving the upper adjustable blade and the lower adjustable blade to rotate.
According to at least one embodiment of the present application, the upper adjustable blade and the lower adjustable blade are respectively provided with a knob angle adapted to the rotor blade for adjusting an angle of the air flow.
According to at least one embodiment of the application, the position of the separating means between the upper and lower adjustable blades is set according to the twist angle of the rotor blade, facilitating the adjustment of the angle of the air flow.
The application has at least the following beneficial technical effects:
the utility model provides an adjust air current machine casket is through a plurality of adjustable blades that the segmentation set up in the footpath, and more careful accent has received the air current of adjustable blade export direction to better and rotor blade's profile matching.
Drawings
FIG. 1 is a partial schematic view of a conditioning flow case provided herein;
FIG. 2 is a partial schematic view of a prior art regulated airflow casing of the present application.
Wherein:
1-adjustable blade, 2-rotor blade, 3-fixed support plate, 4-upper adjustable blade, 5-lower adjustable blade, 6-upper casing, 7-lower casing and 8-separation device.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "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 merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1-2.
The present application is a flow regulating casing for regulating the direction of the air flow at the inlet of a rotor blade 2, as shown in fig. 1, the flow regulating casing of the prior art comprising:
the adjustable vane type air conditioner comprises an upper casing 6, a lower casing 7, a fixed support plate 3 and an adjustable vane 1, wherein the fixed support plate 3 and the adjustable vane 1 are connected between the upper casing 6 and the lower casing 7;
the regulated flow casing of the present application further comprises:
the adjustable blade 1 is divided into an upper adjustable blade 4 and a lower adjustable blade 5, and the upper adjustable blade 4 and the lower adjustable blade 5 can rotate respectively;
the separation device 8 is arranged between the upper adjustable blade 4 and the lower adjustable blade 5, and the separation device 8 is connected with the fixed support plate 3.
In the present embodiment, as shown in fig. 1, the adjustable airflow casing provided by the present application divides the adjustable blade 1 into an upper adjustable blade 4 and a lower adjustable blade 5, and increases and changes the adjustment of the adjustable blade 1 to the outlet airflow direction, so that the outlet airflow direction is more matched with the rotor blade profile. And a separating device 8 is additionally arranged between the upper adjustable blade 4 and the lower adjustable blade 5, so that a mounting position is erected for mounting the upper adjustable blade 4 and the lower adjustable blade 5, and meanwhile, the upper adjustable blade 4 and the lower adjustable blade 5 can be separated, so that air flows regulated by the two adjustable blades are isolated and cannot be interfered with each other.
In the present embodiment, it can be understood that the adjustable blade 1 can also be divided into a plurality of adjustable blades in the radial direction, for example, the vertical direction in fig. 1 and 2 is the radial direction, and the plurality of adjustable blades perform finer adjustment on the air flow, and accordingly, the number of the separating devices 8 is increased. In the embodiments of the present application, the regulated flow casing of the present application will be explained in terms of two adjustable vanes.
According to at least one embodiment of the present application, the separating device 8 comprises a bracket and a bushing connected to one end of the bracket, the other end of the bracket is connected to the fixed support plate 3, and the bushing is rotatably connected to the upper adjustable blade 4 and the lower adjustable blade 5, respectively. In this embodiment, the support may be a tube or some other supporting component, which serves as a rotational support for the upper adjustable blade 4 and the lower adjustable blade 5.
According to at least one embodiment of the present application, the connection of the bracket to the fixing plate 3 comprises a fixed connection or a detachable connection. Fixed connection is including welding or riveting, adopts fixed connection can make the support with be connected more reliably and firmly between the fixed extension board 3, but fixed connection can make the limitation of support mounting bigger, and the replaceability also has the limitation, so can also consider to adopt and can dismantle the connection, can carry out dismouting, maintenance or adjustment etc. according to actual conditions. In the embodiment, the detachable connection is realized by adopting a bolt connection.
According to at least one embodiment of this application, go up adjustable blade 4 with adjustable blade 5 has axis of rotation (or axis of rotation) respectively down, the both ends of axis of rotation cooperate respectively to be connected to go up receiver 6/down receiver 7 or on the axle sleeve, go up adjustable blade 4 with adjustable blade 5 can rotate around its own axis of rotation respectively down, realizes the regulation to the air current, and the axle sleeve plays the effect of support.
According to at least one embodiment of the present application, two bearings are disposed in the shaft sleeve, and the two bearings are respectively connected with one end of the rotating shaft or the rotating axis of the upper adjustable blade 4 and the lower adjustable blade 5 in a matching manner. The mounting of the bearing reduces the rotational friction of the upper adjustable blade 4 and the lower adjustable blade 5, making the rotation more portable.
According to at least one embodiment of the present application, the end of the upper adjustable blade 4 connected to the upper casing 6 and the end of the lower adjustable blade 5 connected to the lower casing 7 are respectively provided with a driving device or a transmission device for driving the rotation of the upper adjustable blade 4 and the lower adjustable blade 5. For example, a gear is provided at the end of the rotating shaft of the upper adjustable vane 4, and the gear is directly connected to a motor and driven by the motor. Or the gear is directly meshed with another gear to transmit power. It will be appreciated that a chain drive or belt drive is also possible. It will be appreciated that the operation of the drive means or transmission means does not interfere with the rotation of the upper and lower adjustable vanes 4, 5.
According to at least one embodiment of the application, go up adjustable blade 4 with adjustable blade 5 is provided with the adaptation respectively down the knob angle of rotor blade 2 for adjust the angle of air current, go up adjustable blade 4 with adjustable blade 5's knob angle is confirmed according to actual conditions and actual demand down.
According to at least one embodiment of the present application, the position of the separation means 8 between the upper adjustable vane 4 and the lower adjustable vane 5 is set according to the twist angle of the rotor blade 2, facilitating the adjustment of the angle of the air flow.
The utility model provides an adjust air current machine casket is through a plurality of adjustable blades that the segmentation set up in the footpath, and more careful accent has received the air current of adjustable blade export direction to better and rotor blade's profile matching.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A regulating airflow housing for regulating the airflow direction at the inlet of a rotor blade (2), comprising:
the adjustable vane type air compressor comprises an upper casing (6), a lower casing (7), and a fixed support plate (3) and an adjustable vane (1) which are connected between the upper casing (6) and the lower casing (7), wherein the adjustable vane (1) is rotatably connected between the upper casing (6) and the lower casing (7);
it is characterized by comprising:
the adjustable blades (1) are divided into an upper adjustable blade (4) and a lower adjustable blade (5), and the upper adjustable blade (4) and the lower adjustable blade (5) can rotate respectively;
the separation device (8) is arranged between the upper adjustable blade (4) and the lower adjustable blade (5), and the separation device (8) is connected with the fixed support plate (3).
2. A regulated flow casing according to claim 1, wherein said partition means (8) comprises a bracket and a bushing connected to one end of said bracket, the other end of said bracket being connected to said fixed support (3), said bushing being rotatably connected to said upper adjustable vane (4) and to said lower adjustable vane (5), respectively.
3. A conditioning flow casing according to claim 2, characterized in that the connection of the bracket to the fixing plate (3) comprises a fixed connection or a removable connection.
4. The regulated airflow casing according to claim 3 wherein said fixed connection comprises welding or riveting.
5. The regulated airflow casing of claim 3 wherein said removable connection comprises a bolted connection.
6. The regulated flow casing according to claim 2, characterized in that said upper (4) and lower (5) adjustable blades have respective rotation axes, both ends of which are fittingly connected to said upper casing (6) and to said sleeve, respectively, or fittingly connected to said lower casing (7) and to said sleeve, respectively.
7. The regulated flow casing according to claim 6, wherein two bearings are provided in said sleeve, one of said two bearings being in mating connection with one end of the rotational shaft of said upper adjustable vane (4) and the other of said two bearings being in mating connection with one end of the rotational shaft of said lower adjustable vane (5).
8. The regulated flow casing according to claim 1, wherein the end of the upper adjustable vane (4) connected to the upper casing (6) and the end of the lower adjustable vane (5) connected to the lower casing (7) are provided with drive means for driving the rotation of the upper adjustable vane (4) and the lower adjustable vane (5), respectively.
9. The conditioning flow box according to claim 1, characterized in that said upper (4) and lower (5) adjustable blades are provided with a turn angle adapted to the rotor blade (2), respectively, for adjusting the angle of the flow.
10. The conditioning flow box according to claim 1, characterized in that the position of said partition means (8) between said upper (4) and lower (5) adjustable blades is set according to the twist angle of said rotor blade (2), facilitating the adjustment of the angle of the flow.
CN201811538286.3A 2018-12-16 2018-12-16 Adjust air current machine casket Active CN109538307B (en)

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CN109538307B true CN109538307B (en) 2022-03-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110064615B (en) * 2019-05-14 2022-07-22 中国航发沈阳发动机研究所 Flow passage cleaning device and cleaning method
CN113898419A (en) * 2021-10-10 2022-01-07 中国航发沈阳发动机研究所 Air inlet casing structure and assembling method thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4947642A (en) * 1988-04-11 1990-08-14 Mtu Motoren- Und Turbinen-Union Munchen Gmbh Propfan turbo-engine
US5261787A (en) * 1992-01-17 1993-11-16 Impsa International, Inc. Water turbines and water flow transition members therefor
CN101319683A (en) * 2007-06-08 2008-12-10 通用电气公司 Rotatable guiding blade and related method
CN104295326A (en) * 2014-09-16 2015-01-21 萍乡市德博科技发展有限公司 Rivet structure for spacer sleeve on cross-section-variable nozzle ring of turbocharger

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3207736B2 (en) * 1995-12-29 2001-09-10 三菱重工業株式会社 Wind direction control device in wind tunnel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947642A (en) * 1988-04-11 1990-08-14 Mtu Motoren- Und Turbinen-Union Munchen Gmbh Propfan turbo-engine
US5261787A (en) * 1992-01-17 1993-11-16 Impsa International, Inc. Water turbines and water flow transition members therefor
CN101319683A (en) * 2007-06-08 2008-12-10 通用电气公司 Rotatable guiding blade and related method
CN104295326A (en) * 2014-09-16 2015-01-21 萍乡市德博科技发展有限公司 Rivet structure for spacer sleeve on cross-section-variable nozzle ring of turbocharger

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