CN115727009A - Self-sensing variable-camber stator blade - Google Patents
Self-sensing variable-camber stator blade Download PDFInfo
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- CN115727009A CN115727009A CN202211606456.3A CN202211606456A CN115727009A CN 115727009 A CN115727009 A CN 115727009A CN 202211606456 A CN202211606456 A CN 202211606456A CN 115727009 A CN115727009 A CN 115727009A
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- stator blade
- variable
- camber stator
- blade
- variable camber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention aims to provide a self-sensing variable-camber stator blade, which comprises a variable-camber stator blade front section, a variable-camber stator blade rear section, a top rotating disc and a bottom rotating disc, wherein a gap is formed between the variable-camber stator blade front section and the variable-camber stator blade rear section, the top rotating disc and the bottom rotating disc are respectively positioned at the upper end and the lower end of the variable-camber stator blade front section and are integrated with the variable-camber stator blade front section into a whole, the variable-camber stator blade rear section is arranged between the top rotating disc and the bottom rotating disc through a fixed bearing, a rotating bearing is arranged outside the fixed bearing, and the variable-camber stator blade rear section is driven to rotate through driving the rotating bearing. The intelligent self-adaptive control system can acquire the inflow parameters in real time, analyze the airflow and the engine operation parameters through the intelligent self-adaptive control system, and adjust the geometric shapes of the blades in time to adapt to different actual conditions, thereby improving the stability and the working efficiency of the compressor under the non-design working condition.
Description
Technical Field
The invention relates to a compressor, in particular to a compressor blade.
Background
With the development of modern science and technology, engines are also required to face more and worse working environments, and in order to enable the engines to safely and efficiently cope with various actual running conditions, a control system with high self-adaption capability is designed, environmental parameters are detected in real time, the geometric shapes of engine components are intelligently adjusted, and the efficiency and the working range are improved, which is always an important subject in the field of the engines. The adjustable stator blade is one of the effective methods for improving the surge margin and efficiency of the gas compressor and expanding the stable working range of the gas compressor, generally comprises two sections or three sections, adapts to the change of an attack angle by adjusting the angle of the front section blade, improves the performance of an interstage flow field, and provides better air flow conditions for a back row rotor by controlling and changing the outlet air flow angle of the back section blade.
However, when the compressor is in an off-design condition, the conventional adjustable stator blade cannot provide a proper geometric shape in time to optimize a flow field and improve efficiency, and stability and operation performance of the compressor under other operation conditions are limited. Therefore, a novel stator blade control structure which has high self-adaptive capacity, intelligently adjusts the geometric shape of the blade and widens the stable working range of the gas compressor is needed.
Disclosure of Invention
The invention aims to provide a self-sensing variable camber stator blade which can be intelligently adjusted according to the incoming flow conditions and the running state of a gas compressor, change the geometric shape of the blade and improve the stable working range and the working efficiency of the gas compressor.
The purpose of the invention is realized as follows:
the invention relates to a self-sensing variable camber stator blade, which is characterized in that: including variable camber stator blade anterior segment, variable camber stator blade back end, the top carousel, the bottom carousel, variable camber stator blade anterior segment, form the crack between the variable camber stator blade back end, top carousel and bottom carousel are located the upper and lower both ends of variable camber stator blade anterior segment respectively and with variable camber stator blade anterior segment structure as an organic whole, variable camber stator blade back end passes through fixing bearing and installs between top carousel and bottom carousel, the fixing bearing outside sets up swivel bearing, it is rotatory to drive variable camber stator blade back end through driving swivel bearing.
The present invention may further comprise:
1. and adjusting the relative positions of the fixed bearing and the rotary bearing so as to adjust the distance of a crack between the front section of the variable-camber stator blade and the rear section of the variable-camber stator blade.
2. Set up probe measurement pipeline hole on the carousel of top, set up blade leading edge integral type measuring equipment mounting hole on the variable camber stator blade anterior segment, blade leading edge integral type measuring equipment mounting hole links to each other with probe measurement pipeline hole.
3. The tail part of the front section of the variable camber stator blade, the shape of the crack and the initial position of the rotary bearing are concentric circles.
4. The top turntable is connected with the top actuating mechanism and is driven by the top actuating mechanism to rotate.
The invention has the advantages that: the intelligent self-adaptive control system can acquire the inflow parameters in real time, analyze the airflow and the engine operation parameters through the intelligent self-adaptive control system, and adjust the geometric shapes of the blades in time to adapt to different actual conditions, thereby improving the stability and the working efficiency of the compressor under the non-design working condition.
Drawings
FIG. 1 is a schematic view of the process of adjusting blade camber according to the present invention;
FIG. 2 is a schematic view of the present invention mounted to a hub;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a top view of a blade of the present invention;
FIG. 5 is a sectional view of a blade leading edge probe mounting opening.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-5, in the present embodiment, a self-sensing variable camber stator blade is provided, and fig. 2 is a general schematic diagram according to an embodiment of the present invention, and includes a casing hub 1, a self-sensing variable camber stator blade 2, a top actuator 3 and an intelligent adaptive control system 4, where the top actuator 3 is connected to the self-sensing variable camber stator blade 2, and is installed on the casing hub 1, and a pipeline connects the top actuator 3 to the intelligent adaptive control system 4, and the intelligent adaptive control system 4 determines an optimal geometry of the self-sensing variable camber stator blade 2 by analyzing and measuring environmental operating parameters and operating condition data of a combustion engine, and drives the blade to rotate by the top actuator 3 to complete the blade geometry. Fig. 3 and 4 are schematic diagrams and structural diagrams of a self-sensing variable camber stator blade 2, which includes a front section 5, a rear section 6, a top and bottom rotary table 7, a blade front edge integrated measuring device mounting hole 8, a measuring device pipeline hole 9, a blade rear section fixed bearing 10, and a blade rear section rotating bearing 11, wherein the rotary table 7 and the front section 5 of the variable camber stator blade are integrated, and the top actuating mechanism 3 drives the rotary table 7 to rotate to drive the blade to rotate, so as to change the windward angle of the front section of the blade; the rear blade section 6 is arranged between the top rotating disk 3 and the bottom rotating disk 7 through a fixed bearing 10, and the rear blade section 6 is driven to rotate through a driving rotating bearing 11 to change the bending degree of the blade; the gap distance between the front section and the rear section of the blade can be adjusted by adjusting the relative positions of the fixed bearing 10 and the rotary bearing 11; the blade front edge integrated measuring equipment mounting hole 8 is a cylindrical hole, is connected with the probe measuring pipeline hole 9 in the front section of the blade and is used for mounting a three-hole or five-hole probe and a measuring pipeline, and a cross section view at the measuring equipment pipeline hole 9 is shown in fig. 5; the shape of the tail part and the seam path of the front blade section 5 and the initial position of the rotary bearing 11 of the rear blade section are concentric circles.
In the practical use process, the intelligent self-adaptive control system obtains inflow parameters through the measurement of a three-hole probe or a five-hole probe installed in an integrated measuring equipment installation hole 8 at the front edge of the blade, obtains the optimal blade geometric parameters under the current working condition through the comprehensive analysis of the operation parameters of a compressor, adjusts the windward angle of the front section 5 of the blade through the rotation of a driving turntable 7, adjusts the angle of the rear section 6 of the blade through the rotation of a driving rotating bearing 11, and finally adjusts the relative position of a fixed bearing 10 and the rotating bearing 11 through the driving adjustment, adjusts the distance between the front end and the rear end of the blade, and completes the adjustment of the blade geometric parameters; when the working condition changes, the geometric parameters of the blades are adjusted through the steps, and therefore the self-sensing self-adaptive function under different environment states is achieved. According to the invention, the angle of attack of airflow can be controlled within a proper range by adjusting the angle of the front section of the stator blade, the airflow loss is effectively reduced, the uniformity and the stability of a flow field are both increased, the direction of outlet airflow can meet the requirement of a rear-row rotor on the direction of inlet airflow by adjusting the angle of the rear section of the stator blade, so that the compressor can stably work for a long time, the speed of crack jet flow can be adjusted by adjusting the crack distance of the front end and the rear end of the blade, the formation of a boundary layer of a suction surface of the rear section of the blade is inhibited to a certain extent, and the performance and the stability of the compressor can be effectively improved.
The intelligent self-adaptive control system comprises a driving actuating mechanism capable of adjusting the relative position of each section of blade through a rotating shaft, an analysis device capable of analyzing and obtaining inflow parameters, and a control system capable of determining the optimal geometric shape of the blade through the inflow parameters and the operating condition data of the gas compressor;
the blade integrated measuring equipment is arranged in the middle of the front edge of the first blade section facing the wind direction in the blade height direction, and representative incoming flow parameters of a main flow area are obtained;
the chord-direction installation position of the blade integrated measuring equipment is ensured to be capable of accurately measuring the incoming flow condition within the geometric shape change range of the blade, and if the incoming flow attack angle range is too large, a plurality of airflow detecting holes can be installed in the chord direction;
the blade integrated measuring equipment has the advantages that the airflow probing hole is not too large, the measuring equipment is installed, the change of the molded line of the surface of the blade is reduced, and the damage of the wall surface to the flow of the surface of the blade is reduced;
a hole for mounting a measuring pipeline is reserved in the first section of the blade facing the wind direction and is communicated with an external airflow analysis device of the compressor, and the measuring data is accurately acquired while the rotation of the blade is not influenced;
the driving executing mechanism has a manual control and adjustment function and an anti-locking function, so that the intelligent self-adaptive control system is prevented from being broken down and being incapable of being adjusted manually;
the intelligent self-adaptive control system has learning and predicting capability, and can predict the optimal blade geometric shape and control the driving actuating mechanism to adjust the blade geometric shape according to the actual running condition after inputting the optimal blade geometric shape under enough number of different working conditions and different inflow parameters.
Claims (5)
1. A self-sensing variable camber stator blade is characterized in that: including variable camber stator blade anterior segment, variable camber stator blade back end, the top carousel, the bottom carousel, variable camber stator blade anterior segment, form the crack between the variable camber stator blade back end, top carousel and bottom carousel are located the upper and lower both ends of variable camber stator blade anterior segment respectively and are as an organic whole structure with variable camber stator blade anterior segment, variable camber stator blade back end passes through fixed bearing and installs between top carousel and bottom carousel, the fixed bearing outside sets up swivel bearing, it is rotatory to drive variable camber stator blade back end through driving swivel bearing.
2. A self-sensing variable camber stator vane as claimed in claim 1, wherein: and adjusting the relative positions of the fixed bearing and the rotary bearing so as to adjust the distance of a crack between the front section of the variable-camber stator blade and the rear section of the variable-camber stator blade.
3. A self-sensing variable camber stator vane as claimed in claim 1, wherein: the top turntable is provided with a probe measuring pipeline hole, the front section of the variable camber stator blade is provided with a blade front edge integrated measuring equipment mounting hole, and the blade front edge integrated measuring equipment mounting hole is connected with the probe measuring pipeline hole.
4. A self-sensing variable camber stator vane as claimed in claim 1, wherein: the tail part of the front section of the variable camber stator blade, the shape of the crack and the initial position of the rotary bearing are concentric circles.
5. A self-sensing variable camber stator vane as claimed in claim 1, wherein: the top turntable is connected with the top actuating mechanism and is driven by the top actuating mechanism to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211606456.3A CN115727009A (en) | 2022-12-12 | 2022-12-12 | Self-sensing variable-camber stator blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211606456.3A CN115727009A (en) | 2022-12-12 | 2022-12-12 | Self-sensing variable-camber stator blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115727009A true CN115727009A (en) | 2023-03-03 |
Family
ID=85301321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211606456.3A Pending CN115727009A (en) | 2022-12-12 | 2022-12-12 | Self-sensing variable-camber stator blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115727009A (en) |
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2022
- 2022-12-12 CN CN202211606456.3A patent/CN115727009A/en active Pending
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