CN114878175B - Outer culvert area synchronous regulating mechanism of inner culvert and outer culvert split-flow exhaust system - Google Patents
Outer culvert area synchronous regulating mechanism of inner culvert and outer culvert split-flow exhaust system Download PDFInfo
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- CN114878175B CN114878175B CN202210400213.8A CN202210400213A CN114878175B CN 114878175 B CN114878175 B CN 114878175B CN 202210400213 A CN202210400213 A CN 202210400213A CN 114878175 B CN114878175 B CN 114878175B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 title claims description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000008844 regulatory mechanism Effects 0.000 claims 5
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 12
- 238000002955 isolation Methods 0.000 description 6
- 238000009991 scouring Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
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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
-
- 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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model belongs to the aeroengine test field, in particular to outer culvert area synchronous adjustment mechanism of internal and external culvert reposition of redundant personnel exhaust system, every induced air pipe all is connected with the speed reduction diffuser pipe, every speed reduction diffuser pipe all has one section to be the parallel section of axis with the axis of outer culvert gas-collecting device, the inner chamber of every parallel section articulates through the pivot respectively has discoid valve, the wall of parallel section is passed respectively to the one end of every pivot and at wall outside fixed connection rotary rod, every rotary rod articulates a actuating lever respectively, all actuating levers all articulate same major structure, the axial effort carries out axial motion by the actuator, thereby drive actuating lever, the rotary rod, the pivot drives the valve and rotates, the synchronous accurate regulation of outer culvert area has been realized.
Description
Technical Field
The application belongs to the field of aeroengine tests, and in particular relates to an external culvert area synchronous adjusting mechanism of an internal and external culvert split-flow exhaust system.
Background
With the continued development of aeroweapons, the need for high performance of aeroengines is also becoming more and more stringent as the design capacity and manufacturing level increases. Accordingly, there is a need for better testing means to test the actual performance of various components of an aircraft engine. In order to efficiently test the actual performance of the aero-engine, an exhaust device for internal and external culvert diversion is designed, and the exhaust device can be used for diversion and independent exhaust of the internal culvert and the external culvert of the aero-engine, so that the simulation of the severe environment of the engine operation is realized. The exhaust device can realize the bypass exhaust of the internal and external culverts, but can not independently adjust the exhaust area of the external culverts. In order to expand the working envelope of the exhaust device and improve the actual performance test precision of the component, the independent and accurate adjustable function of the exhaust area of the culvert is required to be realized. Meanwhile, in the prior art, the outer culvert is discharged through exhaust pipes uniformly distributed in the circumferential direction, and the synchronous and adjustable exhaust pipes are required to be ensured. In addition, the exhaust speed of the external air flow in the air collection cavity is high, the air flow needs to be decelerated, so that the scouring of the air flow to the pipeline is reduced, and the working stability of the component is improved. The invention provides an external culvert area synchronous adjusting mechanism, which solves the problems.
Disclosure of Invention
In order to solve the above-mentioned problem, this application provides an outer culvert area synchro adjustment mechanism of interior and exterior culvert reposition of redundant personnel exhaust system, is connected with interior and exterior culvert reposition of redundant personnel stand-alone type exhaust structure, interior and exterior culvert reposition of redundant personnel stand-alone type exhaust structure includes:
a convergent section with a ring cavity structure, which is connected with an engine exhaust port and is provided with an outer ring cavity and an inner cavity positioned in the center of the outer ring cavity,
the outer culvert gas collection device is connected with the convergence section and is provided with a closed gas collection cavity and a gas collection inner cavity positioned in the center of the closed gas collection cavity, the closed gas collection cavity is communicated with the outer annular cavity, and the gas collection inner cavity is communicated with the inner cavity;
the engine outer culvert gas flows into the outer annular cavity and the closed gas collection cavity, the engine inner culvert gas flows into the inner cavity and the gas collection cavity, the gas collection cavity gradually converges to be closed along the gas flow direction, one side of the gas collection cavity, which is far away from the inner culvert gas, is provided with a plurality of circumferentially distributed gas guide pipes, and the outer culvert gas is discharged through the gas guide pipes; the joint of the inner cavity and the gas collection inner cavity is provided with a circular seam, part of outer culvert gas enters the inner cavity through the circular seam, the outer annular cavity is isolated from the inner cavity through an inner culvert isolating annular cavity, and the inner culvert isolating annular cavity is an annular cavity formed by arranging a first annular wall and a second annular wall in a clearance manner;
the method is characterized in that: each gas-inducing pipe is connected with a speed-reducing diffusion pipe, each speed-reducing diffusion pipe is provided with a parallel section with an axis parallel to the axis of the external gas-collecting device, the inner cavity of each parallel section is hinged with a disc-shaped valve through a rotating shaft, one end of each rotating shaft penetrates through the wall surface of the parallel section and is fixedly connected with a rotating rod outside the wall surface, each rotating rod is hinged with a driving rod, all the driving rods are hinged with the same main body structure, and the main body structure is axially moved by an axial acting force provided by an actuator, so that the driving rods, the rotating rods and the rotating shaft drive the valve to rotate. That is, the valve rotates along with the rotating shaft, and the rotating rod is connected with the rotating shaft, and the rotating rod is controlled to rotate through the driving rod to drive the opening and closing of the valve, meanwhile, the angle of the rotating rod and the angle of the valve are in one-to-one correspondence, and the angle of the valve and the culvert area are in one-to-one correspondence, so that the accurate adjustment of the culvert area is realized.
Preferably, the axes of the rotating shafts are located in the same plane and intersect with the central axis of the external air collecting device, and the main body structure comprises a rigid ring, so that the rotation angle can be controlled by the ring, and the transmission angle is reasonable.
Preferably, the number of the actuators comprises a plurality of actuators, and the actuators are uniformly distributed along the circumferential direction of the external air collecting device.
Preferably, the drive rod and the rotary rod are not in the same straight line at the stroke limit position of the actuator, so that dead points of the mechanism are avoided.
Preferably, the ring is located outside all of the speed reducing diffuser pipes or inside all of the speed reducing diffuser pipes.
Preferably, the axis of the speed reducing diffusion pipe is a straight line, and a switching section is connected between the air entraining pipe and the speed reducing diffusion pipe and used for changing the radial flow of the air flow of the external air into the axial flow.
Preferably, the speed reducing diffuser pipe is an expansion section between the connecting part of the speed reducing diffuser pipe and the switching section and between the speed reducing diffuser pipe and the parallel section, and the expansion section gradually expands along the air flow direction.
Preferably, the number of the speed reducing diffuser pipes is 4 to 10.
The advantages of the present application include: the invention provides an outer culvert area synchronous regulating mechanism, which solves the problem that the outer culvert air flow is too fast to exhaust by arranging a valve in a speed reducing diffuser pipe, so that the outer culvert air is adjustable and controllable, a plurality of valves can be synchronously regulated by a circumferential pipeline through the same main structure, and the problems of asynchronous valve control and accurate regulation of the exhaust area are solved.
Drawings
FIG. 1 is a perspective view of a synchronous adjustment mechanism according to a preferred embodiment of the present application;
FIG. 2 is a schematic view of an open state of a shutter mechanism according to a preferred embodiment of the present application;
FIG. 3 is a schematic view showing a shutter mechanism in a closed state according to a preferred embodiment of the present application;
FIG. 4 is a schematic illustration of the attachment of a preferred embodiment actuator cylinder to a body structure (91);
FIG. 5 is a perspective view of an internal and external culvert split-flow independent exhaust structure;
FIG. 6 is a cross-sectional view of the convergent section (1) and the culvert gas collection device (2);
FIG. 7 is a perspective view of the auxiliary installation cylinder (4) and the connotation outlet (5);
wherein, a-inner cavity, B-gas collecting inner cavity, c-circular seam, d-inner and outer culvert isolation circular cavity, A-outer circular cavity, B-closed gas collecting cavity, Y-inner culvert gas of engine, X-outer culvert gas, 1-convergence section 1, 2-outer culvert gas collecting device 2, 3-inner and outer culvert isolation ring 3, 4-auxiliary installation cylinder, 5-inner culvert outlet, 21-rectification grille, 22-cone section, 23-straight section, 24-induced air pipe, 25-rear installation edge, 32-first circular wall, 33-second circular wall, 34-tail section, 41-including cylinder, 42-installation edge, 43-auxiliary installation section, 51-installation edge, 52-convergence cylinder, 53-reinforcement ring, 6-switching section 6, 7-speed reducing diffusion pipe, 8-valve mechanism, 9-rigid driving mechanism, 71-expansion section, 72-parallel section, 81-rotating shaft, 82-valve, 83-rotating rod, 84-driving rod, 91-main body structure, 92-installation ear, 93-actuator.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the following describes the technical solutions in the embodiments of the present application in more detail 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 some, but not all, of the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
As shown in fig. 5 to 7, the present application includes a convergent section 1 having a ring cavity structure, the convergent section 1 connects the exhaust device with the engine main unit through a mounting edge and rectifies and compresses the outer culvert airflow, the convergent section 1 has an outer ring cavity a and an inner cavity a located at the center of the outer ring cavity a,
the external culvert gas collection device 2 is connected with the convergence section 1, the external culvert gas collection device 2 is provided with a closed gas collection cavity B and a gas collection cavity B positioned at the center of the closed gas collection cavity B, the closed gas collection cavity B is communicated with the external ring cavity A, and the gas collection cavity B is communicated with the cavity a; the outer culvert gas-collecting device 2 is used as a part for collecting outer culvert gas flow and discharging, and specifically, the outer culvert gas-collecting device 2 comprises a rectifying grating 21, a cone section 22, a straight section 23, a rear mounting edge 25 and a gas-guiding pipe 24, the rectifying grating 21 has the effect of rectifying and supporting the outer culvert gas flow, the rectifying grating 21, the cone section 22 and the straight section 23 form a closed gas-collecting cavity B, a gas-collecting cavity B is formed on the inner side of the straight section 23, the mounting edge 25 is used for connecting an auxiliary mounting cylinder 5 after space design, and the gas-guiding pipe 24 is uniformly distributed on the cone section 22, so that the outer culvert gas flow is uniformly and stably discharged.
The outer culvert gas X of the engine flows into the outer annular cavity A and the closed gas collection cavity B, the inner culvert gas Y of the engine flows into the inner cavity a and the gas collection cavity B, the gas collection cavity B gradually converges to be closed along the gas flow direction, one side of the gas collection cavity B, far away from the inner culvert gas Y, is provided with a plurality of circumferentially distributed gas guide pipes 24, and the outer culvert gas X is discharged through the gas guide pipes 24; the joint of the inner cavity a and the gas collection inner cavity b is provided with a circular seam c, and part of external culvert gas X enters the inner cavity b through the circular seam c.
The inner culvert isolation ring 3 is used as a component for isolating the outer culvert gas X and the inner culvert gas Y and comprises a mounting edge 31, a first annular wall 32, a second annular wall 33 and a tail section 34, wherein the mounting edge 31 is used for fixing an inner culvert isolation annular cavity c, the outer annular cavity A is isolated from an inner cavity a through the inner culvert isolation annular cavity c, the first annular wall 32, the second annular wall 33 and the tail section 34 form a structure with good rigidity, the inner culvert and the outer culvert can be isolated, the working stability is ensured, the inner culvert isolation ring 3 and the outer culvert gas collecting device 2 form an annular seam c, and part of the outer culvert gas can flow into the inner culvert gas flow through the annular seam c for cooling related structures.
The auxiliary installation cylinder body 4 is used as a runner piece of the connotation air flow and a part for fixing the exhaust device and the test bench, and comprises a cylinder body 41, an installation edge 42 and an auxiliary installation joint 43, wherein the cylinder body 41 is used as the runner of the connotation air flow, the installation edge 42 is connected with a front end rear end part, and the auxiliary installation joint 43 is used for fixing the exhaust device on the bench to avoid overlong cantilever and improve the stability of the device.
The connotation outlet 5 is used as a component for discharging connotation air flow and maintaining the state of the engine host, and comprises a mounting edge 51, a convergence cylinder 52 and an exhaust outlet area reinforcing ring 53, wherein the mounting edge 51 is connected with a front end part, the convergence cylinder 52 accelerates the connotation air flow, the exhaust outlet area reinforcing ring 53 has rigidity and is welded at the outlet of the convergence cylinder 52 and is used for resisting deformation caused by scouring of connotation air flow, so that the area of the connotation exhaust outlet is ensured to be maintained at a fixed value, and the state of the engine host is further maintained to be stable;
wherein, the outer culvert gas collecting device 2 is connected and is installed the outer culvert area synchronous adjustment mechanism of inside and outside culvert reposition of redundant personnel formula exhaust system, and changeover portion 6, speed reduction diffusion pipe 7, valve mechanism 8, rigidity actuating mechanism 9 constitute. The method comprises the following steps: the switching section 6 is used as a component for turning the air flow and is connected with an external air flow exhaust pipe 24 of the exhaust system to realize the turning of the external air flow, and the radial flow is changed into the axial flow.
The speed reducing diffuser pipe 7 is used as a component for reducing the air flow and comprises an expansion section 71 and a parallel section 72, the expansion section 71 is connected with the switching section 6 and used for expanding and diffusing the air flow to reduce the scouring of the air flow to the flow passage, and the parallel section 72 is provided with the valve mechanism 3.
Valve mechanism 8 is as the part that realizes outer culvert outlet area control, including pivot 81, valve 82, rotary rod 83, actuating lever 84, and pivot 81 installs the exit at speed reduction diffuser 7, and valve 82 rotates along with pivot 81, and rotary rod 83 links to each other with pivot 81, and the rotary rod 83 is rotated through actuating lever 84 control rotary rod 83, drives opening and shutting of valve, and simultaneously, rotary rod angle and valve angle are one-to-one, and valve angle and outer culvert area are one-to-one, have realized outer accurate the regulation of culvert area.
The rigid driving structure 9 is used as a component for realizing synchronous adjustment of the circumferential valve mechanism, and comprises a main body structure 91, a mounting lug 92 and an actuator 93, wherein the main body structure 91 has good rigidity, the circumferential mounting lug 92 is connected with all driving rods 84, and the driver 93 pulls the main body structure 91 to translate along the axial direction so as to drive all valves to synchronously open and close, so that synchronous adjustment of the outer culvert area is realized.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in 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 (9)
1. An external culvert area synchronous regulating mechanism of an internal and external culvert split-flow exhaust system is connected with an internal and external culvert split-flow independent exhaust structure, and is characterized in that: the inner and outer culvert split-flow independent exhaust structure comprises:
a convergent section (1) with a ring cavity structure, which is connected with an engine exhaust port, the convergent section (1) is provided with an outer ring cavity (A) and an inner cavity (a) positioned at the center of the outer ring cavity (A),
the external culvert gas collection device (2) is connected with the convergence section (1), the external culvert gas collection device (2) is provided with a closed gas collection cavity (B) and a gas collection cavity (B) positioned at the center of the closed gas collection cavity (B), the closed gas collection cavity (B) is communicated with the outer ring cavity (A), and the gas collection cavity (B) is communicated with the inner cavity (a);
the external culvert gas (X) of the engine flows into the external annular cavity (A) and the closed gas collection cavity (B), the internal culvert gas (Y) of the engine flows into the inner cavity (a) and the gas collection cavity (B), the closed gas collection cavity (B) gradually converges to be closed along the gas flow direction, one side of the closed gas collection cavity (B) far away from the internal culvert gas (Y) of the engine is provided with a plurality of circumferentially distributed gas-guiding pipes (24), and the external culvert gas (X) is discharged through the gas-guiding pipes (24); the joint of the inner cavity (a) and the gas collection inner cavity (b) is provided with a circular seam (c), part of external culvert gas (X) enters the gas collection inner cavity (b) through the circular seam (c), the external circular cavity (A) and the inner cavity (a) are isolated through an internal culvert isolating circular cavity (d), and the internal culvert isolating circular cavity (d) is a circular cavity formed by the clearance arrangement of a first circular wall (32) and a second circular wall (33);
every induced air pipe (24) all is connected with speed reduction diffuser pipe (7), every speed reduction diffuser pipe (7) all has one section be the axis with the axis parallel section (72) of outer culvert gas-collecting device (2), the inner chamber of every parallel section (72) articulates through pivot (81) respectively has discoid valve (82), the wall of parallel section (72) is passed respectively to one end of every pivot (81) and in wall outside fixed connection rotary rod (83), every rotary rod (83) articulates a actuating lever (84) respectively, all actuating levers (84) all articulate same major structure (91), major structure (91) are provided axial effort by actuator (93) and are carried out axial motion, thereby drive actuating lever (84), rotary rod (83), pivot (81) drive valve (82) rotation.
2. The culvert area synchronous regulation mechanism of the culvert and culvert split-flow exhaust system of claim 1, characterized in that the axes of the rotating shafts (81) are located in the same plane and intersect with the central axis of the culvert gas collection device (2).
3. The culvert area synchronization adjustment mechanism of an inner culvert split-flow exhaust system of claim 2, wherein the body structure (91) includes a rigid ring.
4. The culvert area synchronous regulation mechanism of the culvert and culvert split-flow exhaust system of claim 1, wherein the number of the actuators (93) comprises a plurality of actuators, and the actuators (93) are uniformly distributed along the circumferential direction of the culvert gas collection device (2).
5. The mechanism for simultaneous adjustment of the culvert area of an internal and external culvert split-flow exhaust system according to claim 1, characterized in that the driving rod (84) and the rotating rod (83) are not on the same straight line at the stroke limit position of the actuator (93).
6. A culvert area synchronous regulation mechanism of an internal and external culvert split-flow exhaust system as claimed in claim 3, characterized in that said ring is located outside all the speed reducing diffuser pipes (7) or said ring is located inside all the speed reducing diffuser pipes (7).
7. The outer culvert area synchronous regulation mechanism of the inner culvert and outer culvert split-flow exhaust system according to claim 1, characterized in that the axis of the speed reducing diffusion pipe (7) is a straight line, a switching section (6) is connected between the air entraining pipe (24) and the speed reducing diffusion pipe (7), and the switching section (6) is used for changing the radial flow of the air flow of the outer culvert gas (X) into the axial flow.
8. The mechanism for synchronously adjusting the outer culvert area of the inner culvert and outer culvert split-flow exhaust system according to claim 7, wherein the speed reducing diffuser pipe (7) is an expansion section (71) between the connecting part of the speed reducing diffuser pipe and the switching section (6) and the parallel section (72), and the expansion section (71) is gradually expanded along the airflow direction.
9. The outer culvert area synchronous regulation mechanism of the inner culvert and outer culvert split-flow exhaust system of claim 1, wherein the number of the speed reducing diffuser pipes (7) is 4-10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210400213.8A CN114878175B (en) | 2022-04-15 | 2022-04-15 | Outer culvert area synchronous regulating mechanism of inner culvert and outer culvert split-flow exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210400213.8A CN114878175B (en) | 2022-04-15 | 2022-04-15 | Outer culvert area synchronous regulating mechanism of inner culvert and outer culvert split-flow exhaust system |
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| CN114878175A CN114878175A (en) | 2022-08-09 |
| CN114878175B true CN114878175B (en) | 2024-02-23 |
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| CN116183234B (en) * | 2023-04-27 | 2023-06-30 | 中国航发四川燃气涡轮研究院 | Double-deck steady voltage room that admits air of high altitude platform |
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| CN107882652A (en) * | 2017-11-10 | 2018-04-06 | 中国航发沈阳发动机研究所 | Sphere restrains omnidirectional's vector spray and has its aero-engine |
| CN108019295A (en) * | 2017-12-15 | 2018-05-11 | 中国航发沈阳发动机研究所 | A kind of aero-engine flow-disturbing denoising device |
| CN109209965A (en) * | 2018-08-27 | 2019-01-15 | 中国航发沈阳发动机研究所 | A kind of double duct compressibility bypass ratio regulation devices and method |
| CN109339875A (en) * | 2018-09-21 | 2019-02-15 | 南京航空航天大学 | A kind of mixing diffuser of band bypass bleed |
| CN110081187A (en) * | 2019-03-29 | 2019-08-02 | 张美华 | It is a kind of for adjusting the valve of air quantity of central air conditioner size |
| CN110374909A (en) * | 2019-07-19 | 2019-10-25 | 中国航发沈阳发动机研究所 | It is a kind of for become circulation Compressor test outer culvert be vented air collecting chamber device |
| CN112824665A (en) * | 2019-11-21 | 2021-05-21 | 中国航发商用航空发动机有限责任公司 | Culvert spray pipe driving device, culvert spray pipe assembly and airflow output area adjusting method |
| CN113236441A (en) * | 2021-04-28 | 2021-08-10 | 中国科学院工程热物理研究所 | Turbine shaft-fan dual-mode engine and adjusting method thereof |
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| CN114878175A (en) | 2022-08-09 |
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