CN109519282B - Integral inertia particle separator based on wall surface rebound characteristic and aero-engine - Google Patents
Integral inertia particle separator based on wall surface rebound characteristic and aero-engine Download PDFInfo
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- CN109519282B CN109519282B CN201811317659.4A CN201811317659A CN109519282B CN 109519282 B CN109519282 B CN 109519282B CN 201811317659 A CN201811317659 A CN 201811317659A CN 109519282 B CN109519282 B CN 109519282B
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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
- F02C7/05—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles
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Abstract
The invention discloses an integral inertia particle separator based on wall surface rebound property, which comprises: the central body is coaxially arranged from outside to inside, the front half section of the central body and the front half section of the outer body are encircled to form an air inlet channel, the rear half section of the central body and the inner wall surface of the flow divider are encircled to form a main flow channel, and the rear half section of the outer body and the outer wall surface of the flow divider are encircled to form a clearing flow channel; the inner wall surface of the outer shell is coated with a first coating, and the first coating is made of an impact-resistant energy-absorbing material. According to the invention, the inner wall surface of the outer shell is coated with the coating made of the impact-resistant energy-absorbing material, so that impact energy of particles entering the particle separator is absorbed by the coating after the particles impact the outer shell, the rebound speed of the particles is reduced, the particles are difficult to return to the main flow passage and are discharged out of the machine along the clearing flow passage, and the separation efficiency of the particles is improved. The invention also provides an aircraft engine comprising the integral inertial particle separator.
Description
Technical Field
The invention relates to the field of aircraft engines and particle separators, in particular to an integral inertial particle separator based on wall surface rebound characteristics. Furthermore, the invention relates to an aircraft engine comprising the above-mentioned particle separator.
Background
Helicopters are often required to fly in special environments with a diffuse sand fog, such as taking off, landing and hovering in mountainous areas, deserts, ice and snow grounds and on sea surfaces, and the working environment of the engine is more and more demanding. At this time, a large amount of foreign matters such as sand, snow and ice or salt fog on the sea are sucked into the engine, and if protective measures are not taken in advance, the dust and sand will bring serious consequences to the helicopter and the engine: compressor blade erosion and the resulting deterioration of engine performance, i.e., reduced power and increased fuel consumption, ultimately results in a shortened engine life. The literature indicates that a 1000 horsepower turboshaft engine can only operate for 10 hours in a 1 mg/cubic foot sand-laden air stream, i.e., only 13 pounds of grit is absorbed and will be scrapped. Therefore, an air Inlet protective device, namely an air Inlet particle separator (Inlet particle separator), needs to be additionally arranged in front of the engine to protect the engine, ensure the working stability of the engine and prolong the service life of the engine. Practice proves that: the life of the engine with the particle separator installed is improved by 10 times or more than that without the particle separator.
An engine particle separator is used to separate solid particles from an impurity-containing gas stream. Is installed at the front end of the engine to reduce the dirt entering into the working device, thereby prolonging the service life of the engine. The existing particle separator utilizes different inertia forces generated when gas-solid two-phase flow is bent in a bent flow channel to throw solid-phase particles with larger inertia force to the periphery, so that the particles are collected and discharged from a peripheral clearing flow channel. But in fact, many large-particle-size particles are thrown to the periphery and then collide with the wall surface of the outer shell to rebound, so that part of the particles return to the main stream, and the separation efficiency is reduced. Even if some particles bounce back and forth in the flow channel for many times, the abrasion to the profile is serious, and the trajectory prediction of the particles is difficult.
Disclosure of Invention
The invention provides an integral inertial particle separator based on wall surface rebound characteristics and an aero-engine, and aims to solve the technical problem that an existing particle separator is low in separation efficiency.
The technical scheme adopted by the invention is as follows:
an integral inertial particle separator based on wall bounce characteristics, comprising:
the particle separator comprises an outer shell, a flow divider and a central body which are coaxially arranged from outside to inside, wherein the front half section of the outer shell and the front half section of the central body surround an air inlet channel of the particle separator;
the inner wall surface of the outer shell is coated with a first coating, and the first coating is made of an impact-resistant energy-absorbing material.
Further, the first coating is coated from the inlet of the air inlet to the position right above the front end of the flow divider.
Furthermore, a first groove is formed in the position, corresponding to the first coating, of the outer shell, and the first coating is laid in the first groove so that the surface of the first coating is flush with the inner wall surface of the outer shell.
Further, the surface of the central body is coated with a second coating layer, and the second coating layer is made of an elastic material.
Further, the second coating is applied from the inlet of the central body to the point where the radius of the central body is maximum.
Further, the tip of the second coating layer forms a rainwater step for separating rainwater with the surface of the central body.
Furthermore, a plurality of pre-rotation blades are uniformly distributed in the circumferential direction of the air inlet channel, a third coating is coated on the pressure surface of each pre-rotation blade, and each third coating is made of an anti-impact energy-absorbing material.
Further, the pressure surface of the pre-rotation blade is coated with a fourth coating, and the fourth coating is made of an elastic material.
Furthermore, a second groove is formed in the pressure surface of the pre-rotation blade corresponding to the third coating, and the third coating is laid in the second groove so that the surface of the third coating is flush with the pressure surface of the pre-rotation blade;
and a third groove is formed in the suction surface of the pre-rotation blade corresponding to the fourth coating, and the fourth coating is laid in the third groove so that the surface of the fourth coating is flush with the suction surface of the pre-rotation blade.
According to another aspect of the invention, there is also provided an aircraft engine comprising a monolithic inertial particle separator based on wall bounce characteristics as described above.
The invention has the following beneficial effects:
the invention relates to an integral inertia particle separator based on wall surface rebound property, which comprises: the particle separator comprises an outer shell, a flow divider and a central body which are coaxially arranged from outside to inside, wherein the front half section of the central body and the front half section of the outer shell surround an air inlet channel of the particle separator, the rear half section of the central body and the inner wall surface of the flow divider surround a main channel for providing clean air flow for the compressor, and the rear half section of the outer shell and the outer wall surface of the flow divider surround a clearing channel for discharging separated particles; the inner wall surface of the outer shell is coated with a first coating, and the first coating is made of an impact-resistant energy-absorbing material. According to the invention, the inner wall surface of the outer shell is coated with the coating made of the impact-resistant energy-absorbing material, so that impact energy of particles entering the particle separator is absorbed by the coating after the particles impact the outer shell, the rebound speed of the particles is reduced, the particles are difficult to return to the main flow passage and are discharged out of the machine along the clearing flow passage, and the separation efficiency of the particles is improved.
The aero-engine comprises the integral inertial particle separator based on the wall surface rebound property, the coating made of the impact-resistant energy-absorbing material is coated on the inner wall surface of the outer shell, so that impact energy is absorbed by the coating after particles entering the particle separator impact the outer shell, the particle rebound speed is reduced, the particles are difficult to return to a main flow channel and are discharged out of the aero-engine along a clearing flow channel, the particle separation efficiency is improved, the particles entering the engine are reduced, clean air flow is provided for the air compressor, and the performance of the engine is further improved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a first preferred embodiment of the present invention;
FIG. 2 is an axial half-section schematic view of a first preferred embodiment of the present invention;
fig. 3 is a schematic structural view of a rainwater step according to a first preferred embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second preferred embodiment of the present invention;
FIG. 5 is an axial half-section schematic view of a second preferred embodiment of the invention;
fig. 6 is a schematic cross-sectional view of a pre-rotation vane of a second preferred embodiment of the present invention.
The reference numbers illustrate:
1. an outer housing; 2. a flow divider; 3. a central body; 4. a first coating layer; 5. a second coating layer; 6. an air inlet channel; 7. clearing the flow channel; 8. a main flow channel; 9. a rainwater step; 10. pre-rotating blades; 101. a third coating layer; 102. and a fourth coating.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 and 3, there are two main types of integral particle separators currently used in engines. One with pre-rotation vanes and one without pre-rotation vanes. The working principle of the integral inertia particle separator is as follows:
the particle separator with pre-rotating vanes makes the air entering the flow passage of the particle separator and the foreign matter inside the flow passage obtain circumferential speed. Under the action of inertia, foreign objects with larger mass are thrown to the outer wall of the flow path, enter the cleaning flow path and are discharged outside the machine.
Compared with the particle separator with blades, the blade-free integral particle separator has the advantages of relatively simple structure, light weight and low cost, and the removal of foreign matters such as sand dust and the like mainly depends on that when airflow turns in a flow channel, solid-phase particles are thrown to the periphery due to large inertia, so that the particles are concentrated and are discharged from the peripheral removal flow channel.
In the particle separator, the phenomenon of collision of particles with the wall of the particle separator is also significant, besides the viscous force of the gas flow on the particles and the inertial force of the particles themselves, which dominate the movement of the particles. Collisions can cause abrupt changes in particle trajectories and thus affect particle motion. The current optimization of particle separation usually only focuses on the design of the flow channel shape, and usually only considers the strength of the profile and selects the metal material, but not the influence of the rebound property of the wall surface on the particle motion. The present invention makes reasonable use of the rebound phenomenon to make the particles impacting the central body move to the periphery and make the particles impacting the outer shell not return to the main flow, thereby improving the separation efficiency of the particles.
The invention therefore proposes, based on the rebound properties of the wall, an inertial particle separator comprising: the particle separator comprises an outer shell 1, a flow divider 2 and a central body 3 which are coaxially arranged from outside to inside, wherein the front half section of the central body 3 and the front section of the outer shell 1 are surrounded to form an air inlet channel 6 of the particle separator, the rear half section of the central body 3 and the inner wall surface of the flow divider 2 are surrounded to form a main channel 8 for providing clean air flow for the compressor, and the rear half section of the outer shell 1 and the outer wall surface of the flow divider 2 form a clearing channel 7 for discharging separated particles; the inner wall surface of the outer shell 1 is coated with a first coating 4, and the first coating 4 is made of an impact-resistant energy-absorbing material.
Preferably, the impact-resistant material is one of D3O, VPD or Poron, and in this embodiment, the impact-resistant material is D3O material, which is immediately locked by molecules when it encounters impact or compression, and becomes relatively hard to absorb external force, and returns to its original flexible state when the external force disappears. In this embodiment, impact energy is absorbed after particles entering the particle separator impact the outer housing 1, thereby reducing the velocity of particle bounce.
The particle separator of the embodiment is used for absorbing the impact force of particles impacting the outer shell 1 by coating the first coating 4 made of the impact-resistant energy-absorbing material on the inner wall surface of the outer shell 1, so that the impact energy of the particles entering the particle separator is absorbed by the first coating 4 after impacting the outer shell 1, the normal rebound speed of the particles is reduced, the particles are difficult to return to the main flow passage 8, and the particles are discharged out of the separator along the clearing flow passage 7, and the particle separation efficiency is improved.
Referring to fig. 1, the outer shell 1 is a cylinder with two open ends, the diameter of the first half of the cylinder is gradually increased from the inlet, and the diameter of the second half of the cylinder is gradually decreased. The inside cover of shell body 1 is equipped with central body 3, and the first half section internal diameter of central body 3 is crescent from the import, and the internal diameter of central body 3 back half section diminishes gradually. A flow divider 2 is provided between the rear half of the outer body 1 and the rear half of the central body 3. The front half section of the outer shell 1 and the front half section of the central body 3 are surrounded to form an air inlet channel 6, the inner wall of the flow divider 2 and the rear half section of the central body 3 are surrounded to form a main flow channel 8, and the outer wall of the flow divider 2 and the rear half section of the outer shell 1 are surrounded to form a clearing flow channel 7. The air inlet 6 expands outwards and then contracts inwards, the air flow entering the air inlet 6 moves outwards firstly, particles are driven to move outwards, after passing through the maximum radius of the central body 3, the air flow turns because of the inward contraction in the direction of the flow channel, but the particles can lag behind the air flow because of the inertia force, so that the particles are thrown to the periphery and are discharged from the cleaning flow channel 7, and the clean air flow enters the air compressor from the main flow channel 8 for the use of an engine.
Preferably, the first coating 4 on the outer hull 1 ranges from the inlet of the inlet duct 6 to just above the forward end of the splitter 2. Corresponding to the extent of the inlet duct 6. Since the particles entering the particle separator first enter the inlet duct 6, the particles with large mass collide with the outer shell 1 and return to the main flow passage 8 in the flow passage of the inlet duct 6 by inertia. The first coating 4 made of an impact-resistant material is arranged on the inner wall surface of the outer shell 1 corresponding to the air inlet 6, so that the normal rebound speed of particles impacting the outer shell 1 can be effectively reduced, and the particles are discharged out of the machine along the cleaning flow channel 7 without returning to the main flow channel 8.
Preferably, a first groove is arranged at a position, corresponding to the first coating 4, on the outer shell 1, and an impact-resistant energy-absorbing material is laid in the first groove; and the surface of the first coating 4 is flush with the inner wall surface of the outer shell 1 when the first groove is not formed, the original flow channel shape is not changed, and the pneumatic performance of the particle separator is not influenced. In addition, because the first groove is filled with the impact-resistant energy-absorbing material, compared with the outer shell 1 made of a metal material, the weight of the particle separator is reduced, and the performance of the engine is further improved. In the embodiment, the impact-resistant energy-absorbing material is filled in the first groove, so that the separation efficiency of the particle separator can be improved, and the pneumatic performance of the particle separator is not influenced.
Referring to fig. 2 and 3, the front half surface of the central body 3 is coated with a second coating 5, and the second coating 5 is made of an elastic material. In the particle separator of the present embodiment, the second coating 5 made of an elastic material is coated on the surface of the front half of the central body 3, so that the particles entering the particle separator are rebounded after impacting the central body 3, and the particles move to the periphery to enter the cleaning flow channel 7 and are further discharged out of the machine. In the present embodiment, the elastic material is a rubber or resin material.
The demonstration proves that the elastic material is applied to the front end of the central body 3, the impact-resistant energy-absorbing material is applied to the first groove of the outer shell 1, and the separation efficiency of particles is higher than that of the single metal material applied to the inner wall and the outer wall.
Preferably, the second coating 5 ranges from the inlet of the central body 3 to the point where the radius of the central body 3 is maximum. The second coating 5 has a certain thickness, and in this embodiment, the end of the second coating 5 forms a rain step 9 with the surface of the central body 3. The particle separator of this embodiment, through set up rainwater step 9 on the surface of central body 3, make the rainwater attached to 3 walls of central body gather and break away from the wall behind rainwater step 9 to being thrown away from sprue 8 to the periphery, realizing the function of separation rainwater, avoid the rainwater to get into the engine by sprue 8. In addition, the second coating 5 ranges from the inlet of the central body 3 to the position with the largest radius of the central body 3, which is beneficial to better realize the rainwater separation. The second coating 5 of the embodiment enables particles entering the particle separator to have an improved bouncing effect after hitting the central body 3 and to simultaneously fulfil the function of the rain step 9. In addition, compared with the rainwater step 9 made of metal materials, the density of the elastic materials is smaller than that of the metal materials, so that the weight of the particle separator can be reduced, and the performance of the engine can be further improved.
The integral inertia particle separator of the embodiment is characterized in that a coating made of impact-resistant energy-absorbing material is coated on an outer shell, and a coating made of elastic material is coated on the surface of a central body; the normal rebound speed of the particles entering the particle separator is reduced after the particles impact the outer shell 1, so that the particles do not return to the main stream; the particles entering the particle separator are made to impact the central body and then rebound speed is increased to make the particles move to the periphery, separation efficiency of the particles is further improved, and instability of the separation efficiency caused by rebound is reduced. On the other hand, the first groove is formed in the inner wall surface of the outer shell and filled with a non-metal material, and the front end of the central body is made of the non-metal material to replace a metal material to form a rainwater step, so that the weight of the particle separator is reduced. Meanwhile, the nonmetal material is more wear-resistant than the metal material, and the outer shell is made of an impact-resistant energy-absorbing material, so that the rebound times of particles can be effectively reduced, the friction between the particles and the wall surface can be reduced, and the wear resistance of the wall surface of the particle separator can be improved.
Referring to fig. 4 to 6, in the second embodiment of the present invention, a plurality of pre-rotation blades 10 are uniformly distributed in the circumferential direction of the air inlet 6, the pre-rotation blades 10 are divided into a suction surface and a pressure surface, the pressure surface of the pre-rotation blades 10 is coated with a third coating 101, and the third coating 101 is made of an impact-resistant energy-absorbing material.
In this embodiment, the particles entering the particle separator move towards the centerbody 3 after impacting the pressure face of the pre-rotation vanes 10, entering the main flow passage 8, thereby adversely affecting the separation of the particles. Therefore, the third coating 101 made of the impact-resistant energy-absorbing material is arranged on the pressure surface, so that after the particles impact the pressure surface, the rebound speed of the particles impacting the pressure surface can be effectively reduced, the particles do not move towards the central body 3 but move towards the outer shell 1, and then are discharged out of the machine along the clearing flow channel 7, and the particle separation efficiency is improved.
Preferably, the position of the third coating 101 on the pressure surface adopts a concave structure, specifically, a second groove is formed on the pressure surface, and the third coating 101 is laid in the second groove so that the surface of the third coating 101 is flush with the surface of the pressure surface when the groove is not formed, and the shape of the vane is not changed, so that the performance of the pre-rotation vane 10 is not affected.
Referring to fig. 6, the suction side of the pre-rotation vane 10 is coated with a fourth coating 102, and the fourth coating 102 is made of an elastic material. The elastic material is rubber or resin material. The separation is facilitated because the particles of the particle separator will move towards the outer casing 1 due to the elastic action after impacting the suction surface of the pre-rotation vanes 10. The suction surface is therefore coated with a fourth coating 102 of a resilient material so that when a particle hits the suction surface, the bounce speed of the particle is increased and moves towards the outer shell 1, facilitating the separation of the particles.
In this embodiment, a concave structure is adopted at a position on the suction surface corresponding to the fourth coating 102, specifically, a third groove is formed at a position on the suction surface corresponding to the fourth coating 102, and the fourth coating 102 is laid in the third groove. The surface of the third coating 101 is flush with the surface of the suction surface without grooves, and the shape of the blade is not changed, so that the performance of the pre-rotation blade 10 is not affected.
In the integral inertial particle separator of the embodiment, the third coating 101 made of the impact-resistant energy-absorbing material is coated on the pressure surface, the fourth coating 102 made of the elastic material is arranged on the suction surface of the pre-rotation blade 10, and the shape of the blade is not changed, so that the rebound speed of the impact pressure surface is reduced after particles entering the particle separator impact the pressure surface of the pre-rotation blade 10, and the particles do not move to the central body 3 and are discharged out of the machine along the cleaning flow channel 7; the particles are made to increase their rebound speed after impacting the suction surface of the pre-rotation vanes 10, and thus move toward the outer casing 1, facilitating the separation of the particles.
It has been demonstrated that the use of materials with low normal bounce recovery on the inner wall of the outer casing 1 and the pressure surface of the pre-rotation vanes 10 and/or materials with high bounce recovery coefficients on the surface of the central body 3 and the suction surface of the pre-rotation vanes 10 can improve the separation efficiency of the particle separator and reduce the instability of the separation efficiency due to bounce.
In the integral inertial particle separator with the pre-rotation blades 10 of the embodiment, the outer shell and the pressure surface of the pre-rotation blades are coated with the coating made of the shock-resistant energy-absorbing material, and the surface of the central body and the suction surface of the pre-rotation blades are coated with the coating made of the elastic material; the normal rebound speed of the particles entering the particle separator is reduced after the particles impact the outer shell or the pressure surface of the pre-rotation blade, so that the particles do not return to the main stream; the particles entering the particle separator are made to impact the central body or the suction surface of the pre-rotation vane to increase the rebounding speed and make the particles move to the periphery, so that the separation efficiency of the particles is improved, and meanwhile, the instability of the separation efficiency caused by rebounding is reduced. On the other hand, the coating is made of non-metallic materials, so that the weight of the particle separator is reduced; meanwhile, the nonmetal material is more wear-resistant than the metal material, and the impact-resistant energy-absorbing material is adopted on the pressure surfaces of the outer shell and the pre-rotation blades, so that the particle rebounding frequency can be effectively reduced, the friction between particles and the wall surface can be reduced, the wear resistance of the wall surface of the particle separator can be improved, and the service life of the particle separator can be prolonged.
The invention also provides an aero-engine which comprises the integral inertial particle separator based on the wall surface rebound property, the aero-engine is characterized in that the inner wall surface of the outer shell of the particle separator is coated with a coating made of an impact-resistant energy-absorbing material, so that impact energy of particles entering the particle separator is absorbed by the coating after impacting the outer shell, the particle rebound speed is reduced, the particles are difficult to return to the main flow channel and are discharged out of the aero-engine along the clearing flow channel, the particle separation efficiency is improved, the particles entering the air compressor are reduced, clean air flow is provided for the air compressor, and the performance of the engine is further improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An integral inertial particle separator based on wall bounce characteristics, comprising:
the particle separator comprises an outer body (1), a flow divider (2) and a central body (3) which are coaxially arranged from outside to inside, wherein the front half section of the outer body (1) and the front half section of the central body (3) surround to form an air inlet channel (6) of the particle separator, the rear half section of the central body (3) and the inner wall surface of the flow divider (2) surround to form a main flow channel (8) for providing clean air flow for the air compressor, and the rear half section of the outer body (1) and the outer wall surface of the flow divider (2) surround to form a clearing flow channel (7) for discharging separated particles;
the inner wall surface of the outer shell (1) is coated with a first coating (4), and the first coating (4) is made of an impact-resistant energy-absorbing material;
the novel air inlet duct is characterized in that a plurality of pre-rotation blades (10) are uniformly distributed in the circumferential direction of the air inlet duct (6), a third coating (101) is coated on the pressure surface of each pre-rotation blade (10), and each third coating (101) is made of an anti-impact energy-absorbing material.
2. The integral inertial particle separator based on wall bounce characteristics of claim 1,
the coating range of the first coating (4) is from the inlet of the air inlet (6) to the position right above the front end of the flow divider (2).
3. The integral inertial particle separator based on wall bounce characteristics of claim 1,
the position of the outer shell (1) corresponding to the first coating (4) is provided with a first groove, and the first coating (4) is laid in the first groove so that the surface of the first coating (4) is flush with the inner wall surface of the outer shell (1).
4. The integral inertial particle separator based on wall bounce characteristics of claim 1,
the surface of the central body (3) is coated with a second coating (5), and the second coating (5) is made of an elastic material.
5. The integral inertial particle separator based on wall bounce characteristics of claim 4,
the second coating (5) is applied over a range from the inlet of the central body (3) to the point where the radius of the central body (3) is maximum.
6. The integral inertial particle separator based on wall bounce characteristics of claim 4,
the end of the second coating (5) forms a rain step (9) with the surface of the central body (3) for separating rain water.
7. The integral inertial particle separator based on wall bounce characteristics of claim 1,
the suction surface of the pre-rotation blade (10) is coated with a fourth coating (102), and the fourth coating (102) is made of an elastic material.
8. The integral inertial particle separator based on wall bounce characteristics of claim 7,
a second groove is formed in the position, corresponding to the third coating (101), on the pressure surface of the pre-rotation blade (10), and the third coating (101) is laid in the second groove so that the surface of the third coating (101) is flush with the pressure surface of the pre-rotation blade;
and a third groove is formed in the suction surface of the pre-rotation blade (10) corresponding to the fourth coating (102), and the fourth coating (102) is laid in the third groove so that the surface of the fourth coating (102) is flush with the suction surface of the pre-rotation blade.
9. An aircraft engine, characterized in that,
integral inertial particle separator based on wall bounce characteristics comprising any of the previous claims 1 to 8.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765135A (en) * | 2019-03-14 | 2019-05-17 | 中国航发湖南动力机械研究所 | Volute wear-resisting test system |
| CN110617149A (en) * | 2019-08-27 | 2019-12-27 | 南京航空航天大学 | Integral inertia particle separator |
| CN111544964B (en) * | 2020-05-13 | 2022-01-25 | 中国航发湖南动力机械研究所 | Engine and particle separator thereof |
| CN111844799B (en) * | 2020-07-22 | 2022-03-29 | 江苏新扬新材料股份有限公司 | Forming method of aviation particle separator |
| CN111921289B (en) * | 2020-07-29 | 2022-03-25 | 中国航发湖南动力机械研究所 | Sand control dust filtration filter equipment and helicopter |
| CN115075993B (en) * | 2022-05-07 | 2023-03-31 | 中国航发湖南动力机械研究所 | Particle separator inner wall assembly and particle separator |
| US11834988B1 (en) | 2022-06-15 | 2023-12-05 | Rolls-Royce North American Technologies Inc. | Turbine engine inertial particle separator with particle rebound suppression |
| US11834989B1 (en) | 2022-06-15 | 2023-12-05 | Rolls-Royce Corporation | Gas turbine engine inlet particle separators with coatings for rebound control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065155A1 (en) * | 2010-11-12 | 2012-05-18 | Wintec Protective Systems, Inc. | Blade off protection systems and methods |
| CN102698510A (en) * | 2012-04-13 | 2012-10-03 | 上海交通大学 | Airflow channel entry inertia particle separator |
| CN106523158A (en) * | 2016-11-09 | 2017-03-22 | 南京航空航天大学 | Turboshaft engine intake device and operation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2534978B (en) * | 2014-12-22 | 2017-06-21 | Rolls Royce Plc | Particle separation within a gas turbine intake duct |
| EP3067531B1 (en) * | 2015-03-10 | 2020-05-06 | Rolls-Royce North American Technologies, Inc. | Inertial particle separator and particle bounce control |
-
2018
- 2018-11-07 CN CN201811317659.4A patent/CN109519282B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065155A1 (en) * | 2010-11-12 | 2012-05-18 | Wintec Protective Systems, Inc. | Blade off protection systems and methods |
| CN102698510A (en) * | 2012-04-13 | 2012-10-03 | 上海交通大学 | Airflow channel entry inertia particle separator |
| CN106523158A (en) * | 2016-11-09 | 2017-03-22 | 南京航空航天大学 | Turboshaft engine intake device and operation method |
Non-Patent Citations (1)
| Title |
|---|
| 采用非均匀反弹特性壁面的粒子分离器研究;袁永青;《航空动力学报》;20180131;第33卷(第1期);第108页-第115页 * |
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