CN113819487B - Transient adjustable distortion generating device for coupling air inlet residual rotation angle and temperature distribution - Google Patents
Transient adjustable distortion generating device for coupling air inlet residual rotation angle and temperature distribution Download PDFInfo
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- CN113819487B CN113819487B CN202110942446.6A CN202110942446A CN113819487B CN 113819487 B CN113819487 B CN 113819487B CN 202110942446 A CN202110942446 A CN 202110942446A CN 113819487 B CN113819487 B CN 113819487B
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- 238000010168 coupling process Methods 0.000 title claims abstract description 65
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 65
- 230000008878 coupling Effects 0.000 title claims abstract description 64
- 238000009826 distribution Methods 0.000 title claims abstract description 36
- 230000001052 transient effect Effects 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 125
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000000112 cooling gas Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 11
- 230000003993 interaction Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 11
- 238000009828 non-uniform distribution Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00012—Details of sealing devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a transient adjustable distortion generating device with coupled air inlet residual rotation angle and temperature distribution, belonging to the technical field of afterburners of gas turbines; each coupling blade is provided with six independent driving mechanisms, the installation angle, the torsion angle and the cooling air flow temperature of different coupling blades can be independently adjusted in real time through the adjusting mechanism, and a complex extreme coupling flow field with temperature distribution and residual rotation angle non-uniform distribution existing at an inlet of an actual afterburner can be generated in real time at the real engine maneuvering speed. The tail edge of the coupling blade can be twisted to expand the mode range of generating the flow field profile with uneven temperature, the reproducibility of the coupling blade with high degree of freedom to the high residual spin angle area is enhanced, the distorted flow field profile is not required to be subjected to reduced order approximation, the target residual spin angle and temperature distribution coupling distortion air inlet flow field can be obtained on the time-space scale without stopping, and the transient residual spin angle and temperature distribution coupling distortion simulation is realized.
Description
Technical Field
The invention belongs to the technical field of afterburners of gas turbines, and particularly relates to a transient adjustable distortion generating device with coupled air inlet residual rotation angle and temperature distribution.
Background
The integrated afterburner divides the support means of the conventional turbine components into the afterburner for integrated design so that the integrated afterburner inlet section is advanced to the turbine power outlet section. The afterburner has more severe air inlet conditions, and the air inlet residual rotation angle is uneven in the radial direction and the circumferential direction due to the non-uniformity of the turbine operation and the wake flow effect generated by the rotation of the turbine blades; the uneven turbine outlet temperature distribution is caused by cooling the turbine wall with cooling gas and discontinuous fuel injection from the main combustion chamber. The above factors together lead to the intake condition of the integrated afterburner inlet being of a strong swirl non-uniform (non-uniform intake swirl and non-uniform intake temperature distribution), which is one of the important factors affecting the stable operation of the afterburner.
Under the real flight condition, the inlet airflow parameters of the afterburner simultaneously have the distortion of the residual swirl angle and the inlet air temperature distribution, the flow fields are not simple superposition of two distortion flow fields, and the traditional residual swirl distortion generating device can only generate a single inlet distortion flow field and can not simulate the effect of the coupling of the two distortion flow fields on the afterburner. The flow fields generated by the existing adjustable residual rotation or temperature distortion generating devices are only similar to the reduced order of the real inlet flow fields, and cannot reproduce the transient complex extreme distortion flow fields under the actual flight working conditions, so that the experimental requirements of researching the residual rotation angle and temperature distribution coupling distortion characteristics and simulating the intake residual rotation angle and temperature distribution coupling distortion flow fields in real time cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention discloses a transient adjustable distortion generating device for coupling an intake residual rotation angle and temperature distribution, which is an intelligent adjustable intake residual rotation angle and temperature distribution distortion generating device for the torsion angle and the installation angle of a blade and the temperature of the cold air flow released by the tail edge of the blade, and solves the problem that the coupled intake flow field of complex extreme residual rotation angle and temperature which are unevenly distributed along the radial direction and the circumferential direction under the actual working condition of an afterburner inlet can not be generated in real time at present.
The invention is realized in the following way:
The transient adjustable distortion generating device for coupling the residual rotation angle and the temperature distribution of the air inlet is characterized by comprising an annular casing, wherein a plurality of coupling blades are arranged in the annular casing; the coupling blade is divided into three parts, including a blade front edge, a blade main body and a blade tail edge which is obliquely arranged; the blade trailing edge acts as a cooling gas nozzle which can twist to expand the range of flow field profile modes that can produce temperature non-uniformities. The tail edge of the torsionally-rotatable blade is used as a cooling air release component to couple the residual swirl angle of the air intake with the distortion of temperature distribution, so that the problem that the conventional afterburner cannot generate the complicated extreme residual swirl angle and the coupled air intake flow field with the temperature unevenly distributed along the radial direction and the circumferential direction under the real working condition in real time is solved.
The blade tail edge is divided into four tail edge sections, namely a first tail edge section, a second tail edge section, a third tail edge section and a fourth tail edge section; no interaction exists between the tail edge sections; the hollow cylindrical rotating mechanism comprises a first hollow cylindrical rotating mechanism, a second hollow cylindrical rotating mechanism, a third hollow cylindrical rotating mechanism and a fourth hollow cylindrical rotating mechanism; the first tail edge section, the second tail edge section, the third tail edge section and the fourth tail edge section are respectively welded with the first hollow cylindrical rotating mechanism, the second hollow cylindrical rotating mechanism, the third hollow cylindrical rotating mechanism and the fourth hollow cylindrical rotating mechanism;
The first hollow cylindrical rotating mechanism, the second hollow cylindrical rotating mechanism, the third hollow cylindrical rotating mechanism and the fourth hollow cylindrical rotating mechanism are respectively connected with the stepping motor by penetrating through the outer casing through the second arc-shaped opening, and the adjusting signals are output through the set program to drive the hollow cylindrical rotating mechanism to do circumferential rotation within the range of +/-30 degrees along the center line of the second arc-shaped opening, so that the tail edge angle of the coupling blade can be adjusted in real time along the radial direction.
Further, a rectangular runner is arranged in the tail edge of the blade; a hollow cylindrical mechanism runner is arranged in the hollow cylindrical rotating mechanism; specifically, the centers of the first trailing edge section, the second trailing edge section, the third trailing edge section and the fourth trailing edge section are respectively and correspondingly provided with a first rectangular flow passage, a second rectangular flow passage, a third rectangular flow passage and a fourth rectangular flow passage;
The center of the first hollow cylindrical rotating mechanism, the second hollow cylindrical rotating mechanism, the third hollow cylindrical rotating mechanism and the fourth hollow cylindrical rotating mechanism are respectively and correspondingly provided with a first hollow cylindrical mechanism runner, a second hollow cylindrical mechanism runner, a third hollow cylindrical mechanism runner and a fourth hollow cylindrical mechanism runner.
Further, the first rectangular runner, the second rectangular runner, the third rectangular runner, the fourth rectangular runner, the first hollow cylindrical mechanism runner, the second hollow cylindrical mechanism runner, the third hollow cylindrical mechanism runner and the fourth hollow cylindrical mechanism runner are correspondingly connected, cooling gas with adjustable flow and temperature is provided for each hollow cylindrical mechanism runner and is released through each trailing edge rectangular runner, the cooling gas speed and the high-temperature main flow speed are kept approximately equal to inhibit temperature gradient dissipation, and further a temperature uneven flow field with obvious profile is formed at the tail edge of the blade.
Further, the front edge end part of the blade is welded with a first cylindrical rotating mechanism, a second cylindrical rotating mechanism and a hollow cylindrical rotating mechanism; the first cylindrical rotating mechanism is hinged with the blade main body at the same time; the first cylindrical rotating mechanism is connected with the stepping motor through the first arc-shaped opening, passes through the external casing and is connected with the stepping motor, and an adjusting signal is output through a set program to drive the first cylindrical rotating mechanism to do circumferential rotation along the center line of the first arc-shaped opening, so that the real-time adjustment of the front edge of the blade of the coupled blade within a range of +/-15 degrees is realized;
The second cylindrical rotating mechanism is welded with the blade main body at the same time, a circular opening is formed in the joint of the second cylindrical rotating mechanism and the front edge of the blade, the second cylindrical rotating mechanism is connected with the stepping motor through the circular opening, and the second cylindrical rotating mechanism is driven to circumferentially rotate along the fixed shaft by outputting an adjusting signal through a set program, so that real-time adjustment of the installation angle of the coupled blade within a range of +/-25 degrees is realized.
Further, the blade front edge, the blade main body, the first tail edge section, the second tail edge section, the third tail edge section and the fourth tail edge section of the coupling blade form six independent driving mechanisms, so that the torsion angle of the coupling blade is adjustable along the radial direction.
Further, the coupled blade planar shape is tapered to maintain a constant angle from the blade root to the blade tip, and each blade assembly is removable for maintenance or replacement.
Further, the first arc-shaped opening and the second arc-shaped opening both use arc-shaped sealing sheets as sealing devices, and the angles of the arc-shaped sealing sheets are more than twice the angles of the first arc-shaped opening and the second arc-shaped opening; and a graphite packing is used as a sealing measure between the circular opening and the second cylindrical rotating mechanism.
According to the invention, the front edge of the blade is welded with the cylindrical rotating mechanism, the cylindrical rotating mechanism is hinged with the blade main body at the same time, the cylindrical rotating mechanism passes through the external casing through the arc-shaped opening and can be connected with the stepping motor, and the cylindrical rotating mechanism is driven to circumferentially rotate along the center line of the arc-shaped opening by outputting an adjusting signal through a set program, so that the real-time adjustment of the angle of the front edge of the coupled blade within a range of +/-15 degrees is realized. The blade main body and the cylindrical rotating mechanism are welded, the cylindrical rotating mechanism is connected with the stepping motor through the circular opening of the external casing, and the cylindrical rotating mechanism is driven to circumferentially rotate along the fixed shaft by outputting an adjusting signal through a set program, so that real-time adjustment of the installation angle of the coupling blade within a range of +/-25 degrees is realized. The tail edge of the blade is divided into four tail edge sections, each tail edge section has no interaction, each tail edge section is welded with a hollow cylindrical rotating mechanism, the hollow cylindrical rotating mechanism passes through an external casing through an arc-shaped opening and is connected with a stepping motor, and an adjusting signal is output through a set program to drive each cylindrical rotating mechanism to do circumferential rotation within a range of +/-30 degrees along the center line of the arc-shaped opening, so that the tail edge angle of the coupled blade can be adjusted in real time along the radial direction.
A rectangular flow passage is arranged in the center of the tail edge section of the blade, the rectangular flow passage is connected with flow passages in the hollow cylindrical rotating mechanisms, cooling gas with adjustable flow and temperature is provided for each hollow cylindrical mechanism and is released through each tail edge flow passage, and the cooling gas speed is kept approximately equal to the high-temperature main flow speed so as to inhibit temperature gradient dissipation, so that a temperature uneven flow field with obvious profile is formed. The stepping motors matched with the three parts of each coupling blade in the device are controlled by an automatic control terminal program, all blade functions can be driven simultaneously, the control terminal stores the required displacement and cooling air flow temperature data of each coupling blade mechanism in a required residual rotation angle and temperature distribution coupling distortion mode, and according to the required distortion flow field mode, an adjusting signal is further transmitted to the stepping motors and a cooling air supply system to be adjusted in real time. The adjusting mechanism for driving the blades to rotate is arranged outside the casing and is connected with the coupling residual rotating blades through the driving mechanism, so that the mutual influence between the adjusting device and the flow field in the casing is avoided.
Compared with the prior art, the invention has the beneficial effects that:
The invention designs a transient adjustable distortion generating device for coupling an intake residual rotation angle and temperature distribution, which aims to instantly generate a complex extreme coupling flow field with non-uniform distribution of temperature and residual rotation angle existing at an inlet of an actual afterburner at the maneuvering speed of a real engine so as to solve the problems existing in the traditional distortion generating device.
The device controls the torsion angle of the front edge of the blade, the installation angle of the blade and the torsion angles of the tail edges of the blade in the wingspan direction through a program under the condition of no interruption test, and simultaneously solves the problem that the complicated extreme residual rotation angle and the complicated extreme residual rotation angle which are unevenly distributed along the radial direction and the circumferential direction under the actual working condition of the afterburner inlet can not be generated in real time at present through adjusting the cold air quantity and the cold air temperature released by the tail edges of the blade.
According to the transient adjustable distortion generating device for coupling the residual rotation angle and the temperature distribution of the air inlet, disclosed by the invention, the coupling simulation of complex extreme residual rotation angle and temperature distribution distortion in an actual engine system is realized on the premise of not performing reduced approximation, the flow field high-temperature area is equal to the number of blades, and the test requirement of researching the coupling distortion characteristics of the transient residual rotation angle and the temperature distribution in the future is met.
Each coupling blade is provided with six independent driving mechanisms, a stepping motor is controlled in real time through program setting, the installation angle and the torsion angle of different coupling blades can be independently adjusted in real time through an adjusting mechanism, the reproduction capability of the coupling blade with high degrees of freedom on a high residual spin angle area is enhanced, the distortion flow field profile is not required to be reduced, and a target residual spin distortion air inlet flow field can be obtained on a time-space scale under the condition of no shutdown.
Different temperature gradient distributions are obtained by changing the temperature and the flow of the cooling gas, the tail edge of the coupling blade can be twisted to enlarge the range of a profile mode capable of generating a temperature non-uniform flow field, and meanwhile, the cooling gas flowing in the blade enables the generating device to simulate a temperature distortion flow field of an actual afterburner under a high-temperature working condition so as to study the performance of the afterburner under the low-cost safety condition before a flight test.
Drawings
FIG. 1 is a schematic diagram of a transient adjustable distortion generating device with coupled air intake residual rotation angle and temperature distribution;
FIG. 2 is a schematic diagram of a transient adjustable distortion generating device coupled blade structure with coupling of the air intake residual rotation angle and the temperature distribution;
FIG. 3 is an enlarged schematic view of a portion of the transient adjustable distortion generator adjustment mechanism with coupled air intake residual rotation angle and temperature profile;
FIG. 4 is an internal cross-sectional view of a transient adjustable distortion generating device coupled blade with an inlet air clearance angle and a temperature;
FIG. 5 is a diagram of three exemplary torsional configuration variations of a coupled blade;
The device comprises a 1-annular casing, 2-coupling blades, 3-blade front edges, 4-blade bodies, 5-blade tail edges, 6-first cylindrical rotating mechanisms, 7-second cylindrical rotating mechanisms, 8-hollow cylindrical rotating mechanisms, 9-first arc-shaped openings, 10-circular openings, 11-second arc-shaped openings, 12-arc-shaped sealing sheets, 13-rectangular runners, 14-hollow cylindrical mechanism runners, 5-1-first tail edge sections, 5-2-second tail edge sections, 5-3-third tail edge sections, 5-4-fourth tail edge sections, 8-1-first hollow cylindrical rotating mechanisms, 8-2-second hollow cylindrical rotating mechanisms, 8-3-third hollow cylindrical rotating mechanisms, 8-4-fourth hollow cylindrical rotating mechanisms, 13-1-first rectangular runners, 13-2-second rectangular runners, 13-3-third rectangular runners, 13-4-fourth hollow cylindrical mechanism runners, 14-1-first hollow cylindrical mechanism runners, 14-2-second rectangular runners, 14-3-fourth hollow cylindrical mechanism runners, 14-3-hollow cylindrical mechanism runners and 14-fourth hollow cylindrical mechanism runners.
Detailed Description
The present invention will be described in further detail with reference to the following examples, for the purpose of making the objects, technical solutions, and effects of the present invention more apparent. It should be noted that the detailed description herein is for purposes of illustration only and is not intended to limit the invention.
Fig. 1 shows a transient adjustable distortion generating device for generating the coupling of the residual rotation angle and the temperature distribution of the actual air intake test condition of an afterburner, which consists of a ring-shaped casing 1, and a plurality of coupling blades 2 with six independent driving mechanisms are arranged in the casing. In the embodiment, the number of the coupling blades is 9, the geometric profiles of the blades are J5012, the coupling blades are uniformly arranged at intervals along the circumferential direction of the casing, and in an actual test, the parameters and the profile of the blade profile can be adjusted according to actual needs.
As shown in fig. 2 to fig. 4, according to the required distortion flow field mode, the control terminal invokes the required residual rotation angle and the required displacement of each coupling blade mechanism and the required cooling air flow temperature data in the temperature distribution coupling distortion mode, and the stepping motor and the cooling air supply system are controlled in real time to independently adjust six independent driving mechanisms of different coupling blades 2 in real time, so that the installation angle, the torsion angle and the released cooling air flow temperature of each coupling blade are changed in real time. The rotation angle of the front edge 3 of the coupling blade and the adjustable installation angle range of the main body 4 of the coupling blade are respectively limited by the arc lengths of the first arc-shaped opening 9 and the second arc-shaped opening 11 of the casing, and the angle of the second arc-shaped opening 11 in the embodiment is 25 degrees, so that the requirement of simulating the maximum residual rotation angle of the inlet of the actual integrated afterburner is met, and when the installation angle of the blade is adjusted to the maximum limit, the other end of the arc-shaped sealing piece 12 just covers the tail end of the groove, and the sealing effect of the casing is maintained. By distributing the temperature and flow of the cooling gas flowing through the rectangular flow channels 13 in each blade trailing edge 5 to obtain different temperature gradient distributions, the coupled blade trailing edges 5 are similar to cooling gas nozzles, can twist and expand the range of modes capable of generating a profile of a temperature-uneven flow field, and meanwhile, the cooling gas flowing in the blades enables the generating device to simulate the temperature distortion flow field of an actual afterburner under high-temperature working conditions.
When the temperature distortion flow field is simulated, six independent drives of the coupling blades can be kept to keep the rotation angle to be zero, and the uniformity of the residual rotation angle of the flow field is almost free from interference, as shown in the configuration A in fig. 5, only cooling gas is supplied, wherein the temperature flow of the cooling gas at the tail edge section of each coupling blade can be controlled independently, and the temperature distortion flow field with obvious profile is generated. When the generating of the residual spin distortion flow field is independently carried out, six independent driving mechanisms of different coupling blades are independently adjusted, as shown in a configuration B in fig. 5, and meanwhile, the tail edges of the coupling blades can supply air with the same temperature as the main flow, so that the temperature gradient in the Yu Xuan distortion flow field is avoided. According to the required transient distortion flow field mode, an adjusting signal can be transmitted to the stepping motor and the cooling gas supply system for immediate adjustment without disassembling and replacing the blades, and as shown in a C configuration in fig. 5, the flow is immediately converted into another residual rotation angle and temperature distribution coupling distortion mode, and the transient complex extreme distortion flow field under the actual flight working condition is reproduced.
According to the transient adjustable distortion generating device for coupling the residual swirl angle and the temperature distribution of the air inlet, the control terminal is used for adjusting the required displacement of each coupling blade mechanism and the temperature data of cooling air flow in the required residual swirl angle and temperature distribution coupling distortion mode according to the required distortion flow field mode, the stepping motor and the cooling air supply system are controlled in real time to independently adjust six independent driving mechanisms of different coupling blades in real time, and therefore the installation angle, the torsion angle and the temperature of the cooling air flow of each coupling blade are changed in real time, and the complex extreme coupling flow field with the temperature distribution and the uneven residual swirl angle distribution existing at the inlet of an actual afterburner is generated in real time at the real engine maneuvering speed.
The preferred embodiments of the present invention described above with reference to the accompanying drawings are only for illustrating the embodiments of the present invention, and not for limiting the purposes of the foregoing invention and the contents and scope of the appended claims, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the technical and protective scope of the present invention.
Claims (5)
1. The transient adjustable distortion generating device for coupling the residual rotation angle and the temperature distribution of air inlet is characterized by comprising an annular casing (1), wherein a plurality of coupling blades (2) are arranged in the annular casing (1); the coupling blade (2) is divided into three parts, including a blade front edge (3), a blade main body (4) and a blade tail edge (5) which is obliquely arranged; the tail edge (5) of the blade can be twisted;
The blade trailing edge (5) is divided into four trailing edge sections, namely a first trailing edge section (5-1), a second trailing edge section (5-2), a third trailing edge section (5-3) and a fourth trailing edge section (5-4); no interaction exists between the tail edge sections; the hollow cylindrical rotating mechanism (8) comprises a first hollow cylindrical rotating mechanism (8-1), a second hollow cylindrical rotating mechanism (8-2), a third hollow cylindrical rotating mechanism (8-3) and a fourth hollow cylindrical rotating mechanism (8-4); the first tail edge section (5-1), the second tail edge section (5-2), the third tail edge section (5-3), the fourth tail edge section (5-4) are respectively welded with the first hollow cylindrical rotating mechanism (8-1), the second hollow cylindrical rotating mechanism (8-2), the third hollow cylindrical rotating mechanism (8-3) and the fourth hollow cylindrical rotating mechanism (8-4);
The first hollow cylindrical rotating mechanism (8-1), the second hollow cylindrical rotating mechanism (8-2), the third hollow cylindrical rotating mechanism (8-3) and the fourth hollow cylindrical rotating mechanism (8-4) are respectively connected with the stepping motor by penetrating through the outer casing (1) through four second arc-shaped holes (11), and an adjusting signal is output through a set program to drive the hollow cylindrical rotating mechanism (8) to circumferentially rotate within a range of +/-30 degrees along the center line of the second arc-shaped holes (11), so that the angle of the tail edge (5) of the coupling blade can be adjusted in real time along the radial direction;
The first rectangular flow passage (13-1), the second rectangular flow passage (13-2), the third rectangular flow passage (13-3), the fourth rectangular flow passage (13-4) is correspondingly connected with the first hollow cylindrical mechanism flow passage (14-1), the second hollow cylindrical mechanism flow passage (14-2), the third hollow cylindrical mechanism flow passage (14-3) and the fourth hollow cylindrical mechanism flow passage (14-4), and by providing cooling gas with adjustable flow temperature for each hollow cylindrical mechanism flow passage, the cooling gas is released through each trailing edge rectangular flow passage, the cooling gas speed and the high-temperature main flow speed are kept approximately equal to inhibit temperature gradient dissipation, and further a temperature non-uniform flow field with obvious profile is formed at the tail edge of the blade;
a rectangular runner (13) is arranged in the tail edge (5) of the blade; a hollow cylindrical mechanism runner (14) is arranged inside the hollow cylindrical rotating mechanism (8); specifically, the centers of the first trailing edge section (5-1), the second trailing edge section (5-2), the third trailing edge section (5-3) and the fourth trailing edge section (5-4) are respectively and correspondingly provided with a first rectangular flow channel (13-1), a second rectangular flow channel (13-2), a third rectangular flow channel (13-3) and a fourth rectangular flow channel (13-4);
The novel hollow cylindrical rotating mechanism comprises a first hollow cylindrical rotating mechanism (8-1), a second hollow cylindrical rotating mechanism (8-2), a third hollow cylindrical rotating mechanism (8-3), a fourth hollow cylindrical rotating mechanism (8-4), wherein a first hollow cylindrical mechanism runner (14-1), a second hollow cylindrical mechanism runner (14-2), a third hollow cylindrical mechanism runner (14-3) and a fourth hollow cylindrical mechanism runner (14-4) are respectively and correspondingly arranged at the center of the fourth hollow cylindrical rotating mechanism (8-4).
2. The transient adjustable distortion generating device for coupling the residual rotation angle and the temperature distribution of the air inlet according to claim 1 is characterized in that a first cylindrical rotating mechanism (6), a second cylindrical rotating mechanism (7) and a hollow cylindrical rotating mechanism (8) are welded at the end part of the front edge (3) of the blade;
The first cylindrical rotating mechanism (6) is hinged with the blade main body (4) at the same time; the first cylindrical rotating mechanism (6) is connected with the front edge (3) of the blade, a first arc-shaped opening (9) is arranged at the joint of the first cylindrical rotating mechanism (6) and the front edge (3) of the blade, the first cylindrical rotating mechanism (6) passes through the outer casing (1) through the first arc-shaped opening (9) to be connected with a stepping motor, and an adjusting signal is output through a set program to drive the first cylindrical rotating mechanism (6) to perform circumferential rotation along the central line of the first arc-shaped opening (9), so that the front edge (3) of the blade coupled with the blade can be adjusted within a range of +/-15 degrees in real time;
The second cylindrical rotating mechanism (7) is welded with the blade main body (4) at the same time, a circular opening (10) is formed in the joint of the second cylindrical rotating mechanism (7) and the front edge (3) of the blade, the second cylindrical rotating mechanism (7) is connected with the stepping motor through the circular opening (10), and the second cylindrical rotating mechanism (7) is driven to circumferentially rotate along the fixed shaft by outputting an adjusting signal through a set program, so that real-time adjustment of the installation angle of the coupled blade within a range of +/-25 degrees is realized.
3. The transient adjustable distortion generating device for coupling the residual rotation angle and the temperature distribution of air intake according to claim 1 is characterized in that the torsion angle of the coupled blade (2) is adjustable along the radial direction by forming six independent driving mechanisms by the blade front edge (3), the blade main body (4), the first tail edge section (5-1), the second tail edge section (5-2), the third tail edge section (5-3) and the fourth tail edge section (5-4).
4. A transient adjustable distortion generating apparatus for coupling an inlet air clearance angle and a temperature profile according to claim 3, wherein the coupling blades (2) are tapered in plan shape to maintain a constant angle from the blade root to the blade tip, and each blade assembly is detachable for maintenance or replacement.
5. The transient adjustable distortion generating device with coupling of the residual rotation angle and the temperature distribution of air inlet according to claim 2, wherein the first arc-shaped opening (9) and the second arc-shaped opening (11) are respectively provided with an arc-shaped sealing piece (12) as a sealing device, and the angle of the arc-shaped sealing piece (12) is more than twice the angle of the first arc-shaped opening (9) and the second arc-shaped opening (11); and a graphite packing is used as a sealing measure between the circular opening (10) and the second cylindrical rotating mechanism (7).
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| CN112814949B (en) * | 2021-01-13 | 2022-01-21 | 南京航空航天大学 | Oblique-section type double-freedom-degree inlet adjustable guide vane suitable for wide bypass ratio variation range |
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2021
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| CN105332945A (en) * | 2015-12-08 | 2016-02-17 | 浙江理工大学 | Centrifugal fan impeller capable of adjusting splitting vanes |
| CN108119916A (en) * | 2016-11-30 | 2018-06-05 | 安萨尔多能源瑞士股份公司 | Vortex generator |
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