阅读说明：本技术 一种航空发动机管式扩压器闭式流道结构 (Closed flow passage structure of tubular diffuser of aircraft engine ) 是由 贲能军 周鹏飞 富仁 博迈特 严小琳 于 2021-07-16 设计创作，主要内容包括：本发明涉及扩压器技术领域,且公开了一种航空发动机管式扩压器闭式流道结构,包括管式扩压器盘体,所述管式扩压器盘体顶部的内侧和底部的内侧分别开设有进气孔组和出气孔组。本发明所设置的第一复合管件、连接软管、第二复合管件总成组装为对多段式可拆卸的复合扩压管件,继而以第一螺丝和第二螺丝作为连接条件,配合管式扩压器盘体内部以圆周阵列方式开设的多个进气孔组、出气孔组以及与多个进气孔组、出气孔组分别对应设置的进气过渡复合管与出气过渡复合管一同组合使用后,可在实现气流经复合扩压管件多处转折处转向,使气流的动能转化为压力,且相对于焊接连接方式,加工、安装以及后续的维修都将会大幅改善。(The invention relates to the technical field of diffusers and discloses a closed flow channel structure of a tubular diffuser of an aero-engine. The first composite pipe fitting, the connecting hose and the second composite pipe fitting assembly are assembled into a multi-section detachable composite diffusion pipe fitting, then the first screw and the second screw are used as connecting conditions, and the first screw and the second screw are matched with a plurality of air inlet hole groups and air outlet hole groups which are arranged in the disc body of the tubular diffuser in a circumferential array mode, and air inlet transition composite pipes and air outlet transition composite pipes which are respectively and correspondingly arranged with the air inlet hole groups and the air outlet hole groups are combined together for use, so that the air flow can be turned at a plurality of turning positions of the composite diffusion pipe fitting, the kinetic energy of the air flow is converted into the pressure, and the processing, the installation and the subsequent maintenance can be greatly improved relative to a welding connection mode.)

1. The utility model provides an aeroengine tubular diffuser closed runner structure, includes tubular diffuser disk body (1), its characterized in that: inlet port group (2) and outlet port group (3) have been seted up respectively to the inboard at tubular diffuser disk body (1) top and the inboard of bottom, the outside of inlet port group (2) is aligned and is installed and admit air transition composite pipe (4), first composite pipe spare (5) are installed to the one end of the composite pipe of admitting air transition (4), the one end fixedly connected with coupling hose (6) of first composite pipe spare (5), the composite pipe spare (7) of the one end fixedly connected with second of coupling hose (6), the composite pipe spare (8) of giving vent to anger is installed to the one end of the composite pipe spare of second (7), the outside at outlet port group (3) is installed to the one end of the composite pipe spare of giving vent to anger (8).

2. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 1, wherein: the inside pore structure of the compound pipe of transition (4) that admits air and the inside pore structure of inlet port group (2) are the slope setting, and the inside of inlet port group (2) is no less than two inlet ports including the number, and sets up the inboard in tubular diffuser disk body (1) bottom with the mode of circumference array, the outside of every inlet port of inlet port group (2) inside all corresponds installs one compound pipe of transition (4) that admits air.

3. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 1, wherein: the inside pore structure of giving vent to anger transition composite pipe (8) and the inside pore structure of gas outlet group (3) are the slope setting, and the inside of gas outlet group (3) is no less than two ventholes including quantity, and sets up the inboard at tubular diffuser disk body (1) top with the mode of circumference array, and the concrete quantity of inside venthole of gas outlet group (3) is the same with the inside inlet port quantity of gas inlet group (2), the outside of every inlet port of gas outlet group (3) inside all corresponds installs one and gives vent to anger transition composite pipe (8).

4. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 1, wherein: the inside of first composite pipe spare (5) is including first hollow tube (51), and the inside activity of first hollow tube (51) one end has cup jointed first screw (9), the inside of the one end threaded connection of first screw (9) at the compound pipe (4) one end of transition admits air, the surface at tubular diffuser disk body (1) bottom of the compound pipe (4) other end fixed connection that admits air, install first sealing washer between the terminal surface of first hollow tube (51) one end and the terminal surface of the compound pipe (4) one end of transition admits air, the inboard joint of the first hollow tube (51) other end has second hollow tube (52), the terminal surface swing joint of second hollow tube (52) one end has first flange preforming (53), the inside activity of first flange preforming (53) has cup jointed first internal lock screw (54), the internal thread connection that the one end of first internal lock screw (54) passed second hollow tube (52) one end has first hollow tube (53) one end is in first hollow tube The other end of the second hollow pipe (52) is fixedly connected with one end of the connecting hose (6).

5. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 4, wherein: the surface of one end of the first hollow pipe (51) and the surface of one end of the air inlet transition composite pipe (4) are respectively provided with a first welding sheet (11) and a second welding sheet (12), and one side of the first welding sheet (11) is aligned with and movably connected with one side of the second welding sheet (12).

6. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 1, wherein: the inside of second composite pipe spare (7) is including third hollow tube (71), and the inside activity of third hollow tube (71) one end has cup jointed second screw (10), the inside at the compound pipe (8) other end of transition of giving vent to anger of one end threaded connection of second screw (10), the surface at tubular diffuser disk body (1) top of one end fixed connection of the compound pipe (8) of transition of giving vent to anger, install the second sealing washer between the terminal surface of third hollow tube (71) one end and the terminal surface of the compound pipe (8) other end of transition of giving vent to anger, the inboard joint of the third hollow tube (71) other end has fourth hollow tube (72), the terminal surface swing joint of fourth hollow tube (72) one end has second flange preforming (73), the inside swing joint of second flange preforming (73) has second internal lock screw (74), the inside threaded connection of the one end of second internal lock screw (74) passing fourth hollow tube (72) one end is again at first threaded connection The other end of the fourth hollow pipe (72) is fixedly connected with the other end of the connecting hose (6).

7. The closed flow passage structure of a tube diffuser of an aero-engine as claimed in claim 6, wherein: the surface of one end of the third hollow pipe (71) and the surface of the other end of the air outlet transition composite pipe (8) are respectively provided with a third welding sheet (13) and a fourth welding sheet (14), and one side of the third welding sheet (13) is aligned with and movably connected with one side of the fourth welding sheet (14).

Technical Field

The invention relates to the technical field of diffusers, in particular to a closed flow passage structure of a tubular diffuser of an aero-engine.

Background

The pipe diffuser is a new kind of diffusers at present, it is to drill a series of isolated cylindrical holes on a ring, then expand the conical hole, form the tubular passage, at the inlet, the adjacent cylindrical surface intersects, form the oval inlet edge, the flow resistance of this kind of diffuser is minor, therefore the efficiency is higher, especially under the condition of supersonic speed of the diffuser inlet, its superiority is more outstanding, so especially suitable for the compressor of the high pressure boost ratio, and the experiment shows, it has good performance, but its disadvantage is when the working condition changes, its performance is worsened, so its applicable working condition range is narrower.

The existing pipe diffuser is mostly formed by integral casting, the manufacturing difficulty is quite large, the qualification rate is low, the cost is high, and the existing technology development related to the problems is provided, for example, an authorized patent is a pipe diffuser for a compressor, the patent number is CN201620385087.3, namely, an L-shaped pipe structure is adopted as a gas transition passage of the pipe diffuser, and the gas flow can turn around through the turning part of the L-shaped diffuser, the speed is greatly reduced, and the effect of effectively converting the kinetic energy of the gas flow into the pressure energy is achieved, although the effect can be achieved theoretically, the L-shaped pipe structure adopted by the pipe diffuser is formed by integral casting, the pipe wall of the L-shaped diffuser is required to be welded and installed subsequently, the pipe wall of the L-shaped diffuser is easily damaged in the actual welding process, the welding difficulty is high, the processing cost is also high, and the L-shaped pipe structure is arranged in an integral structure, the installation position of the pipe diffuser can not be finely adjusted, the subsequent maintenance and replacement are very troublesome, and even the whole device can not be scrapped due to the incapability of maintenance.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a closed flow passage structure of a tubular diffuser of an aero-engine, which solves the problems in the background art.

The invention provides the following technical scheme: the utility model provides an aeroengine tubular diffuser closed runner structure, includes the tubular diffuser disk body, inlet port group and outlet port group have been seted up respectively to the inboard at tubular diffuser disk body top and the inboard of bottom, the outside of inlet port group is aligned and is installed the compound pipe of transition that admits air, first compound pipe fitting is installed to the one end of the compound pipe of transition that admits air, the one end fixedly connected with coupling hose of first compound pipe fitting, the compound pipe fitting of one end fixedly connected with second of coupling hose, the compound pipe of transition of giving vent to anger is installed to the one end of the compound pipe fitting of second, the outside at the outlet port group is installed to the one end of the compound pipe of transition of giving vent to anger.

As a further optimization scheme of the invention, the hole structure in the air inlet transition composite pipe and the hole structure in the air inlet group are both obliquely arranged, the air inlet group comprises at least two air inlets in number, the air inlets are arranged on the inner side of the bottom of the tubular diffuser plate body in a circumferential array mode, and one air inlet transition composite pipe is correspondingly arranged on the outer side of each air inlet in the air inlet group.

As a further optimization scheme of the invention, the hole structure inside the air outlet transition composite pipe and the hole structure inside the air outlet group are both obliquely arranged, the air outlet group comprises at least two air outlet holes in number, the air outlet holes are arranged on the inner side of the top of the tubular diffuser disc body in a circumferential array mode, the specific number of the air outlet holes inside the air outlet group is the same as the number of the air inlet holes inside the air inlet group, and the outer side of each air inlet hole inside the air outlet group is correspondingly provided with one air outlet transition composite pipe.

As a further optimization scheme of the invention, the interior of the first composite pipe fitting comprises a first hollow pipe, the interior of one end of the first hollow pipe is movably sleeved with a first screw, one end of the first screw is in threaded connection with the interior of one end of the air inlet transition composite pipe, the other end of the air inlet transition composite pipe is fixedly connected with the surface of the bottom of the tray body of the tubular diffuser, a first sealing ring is arranged between the end surface of one end of the first hollow pipe and the end surface of one end of the air inlet transition composite pipe, the inner side of the other end of the first hollow pipe is clamped with a second hollow pipe, the end surface of one end of the second hollow pipe is movably connected with a first flange pressing sheet, the interior of the first flange pressing sheet is movably sleeved with a first internal locking screw, one end of the first internal locking screw penetrates through the internal thread of one end of the second hollow pipe to be connected with the inner side of the other end of the first hollow pipe, the other end of the second hollow pipe is fixedly connected with one end of the connecting hose.

As a further optimization scheme of the invention, a first welding sheet and a second welding sheet are respectively arranged on the surface of one end of the first hollow pipe and the surface of one end of the air inlet transition composite pipe, and one side of the first welding sheet is aligned with and movably connected with one side of the second welding sheet.

As a further optimization scheme of the invention, the interior of the second composite pipe fitting comprises a third hollow pipe, a second screw is movably sleeved in one end of the third hollow pipe, one end of the second screw is in threaded connection with the interior of the other end of the air outlet transition composite pipe, one end of the air outlet transition composite pipe is fixedly connected with the surface of the top of the tray body of the tubular diffuser, a second sealing ring is installed between the end face of one end of the third hollow pipe and the end face of the other end of the air outlet transition composite pipe, a fourth hollow pipe is clamped in the inner side of the other end of the third hollow pipe, the end face of one end of the fourth hollow pipe is movably connected with a second flange pressing sheet, a second internal locking screw is movably sleeved in the second flange pressing sheet, one end of the second internal locking screw passes through the interior of the fourth end and is then in threaded connection with the inner side of one end of the third hollow pipe, the other end of the fourth hollow pipe is fixedly connected with the other end of the connecting hose.

As a further optimized scheme of the present invention, a third welding sheet and a fourth welding sheet are respectively installed on the surface of one end of the third hollow tube and the surface of the other end of the air outlet transition composite tube, and one side of the third welding sheet is aligned with and movably connected to one side of the fourth welding sheet.

Compared with the prior art, the invention has the following beneficial effects:

the first composite pipe fitting, the connecting hose and the second composite pipe fitting assembly are assembled into a multi-section detachable composite diffusion pipe fitting, then the first screw and the second screw are used as connecting conditions, and the first screw and the second screw are matched with a plurality of air inlet hole groups and air outlet hole groups which are arranged in the pipe diffuser disc body in a circumferential array mode, and the air inlet transition composite pipe and the air outlet transition composite pipe which are respectively and correspondingly arranged with the air inlet hole groups and the air outlet hole groups are combined together for use, so that the air flow can be turned at a plurality of turning positions of the composite diffusion pipe fitting, the speed is greatly reduced, the kinetic energy of the air flow is effectively converted into the pressure, and compared with the traditional welding connecting mode, the processing, the installation and the subsequent maintenance are greatly improved, and the probability of integral equipment failure and scrapping is reduced.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic bottom view of the structure of the present invention;

FIG. 3 is a schematic view, partially in section, of the structure of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1 according to the present invention.

In the figure: 1. a tubular diffuser disc; 2. a group of intake ports; 3. a gas outlet hole group; 4. an air intake transition compound pipe; 5. a first composite pipe; 51. a first hollow tube; 52. a second hollow tube; 53. a first flange pressing sheet; 54. a first internal locking screw; 6. a connecting hose; 7. a second composite tubular member; 71. a third hollow tube; 72. a fourth hollow tube; 73. a second flange pressing sheet; 74. a second internal locking screw; 8. an air outlet transition composite pipe; 9. a first screw; 10. a second screw; 11. a first welding sheet; 12. a second weld tab; 13. a third weld tab; 14. and a fourth weld tab.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a closed flow passage structure of a tubular diffuser of an aircraft engine comprises a tubular diffuser disc body 1, an inlet hole group 2 and an outlet hole group 3 are respectively arranged on the inner side of the top and the inner side of the bottom of the tubular diffuser disc body 1, an inlet transition composite pipe 4 is arranged on the outer side of the inlet hole group 2 in an aligned manner, the hole structure inside the inlet transition composite pipe 4 and the hole structure inside the inlet hole group 2 are both arranged in an inclined manner, the inlet hole group 2 comprises at least two inlet holes, the inlet holes are arranged on the inner side of the bottom of the tubular diffuser disc body 1 in a circumferential array manner, an inlet transition composite pipe 4 is correspondingly arranged on the outer side of each inlet hole inside the inlet hole group 2, the inlet transition composite pipe 4 extends the passages of the corresponding inlet holes inside the inlet hole group 2 and provides installation surfaces and reciprocating maintenance and installation conditions for subsequent components to be connected, a first composite pipe fitting 5 is installed at one end of the air inlet transition composite pipe 4, a first hollow pipe 51 is arranged inside the first composite pipe fitting 5, a first screw 9 is movably sleeved inside one end of the first hollow pipe 51, one end of the first screw 9 is connected inside one end of the air inlet transition composite pipe 4 in a threaded manner, the other end of the air inlet transition composite pipe 4 is fixedly connected to the surface of the bottom of the tubular diffuser disc body 1, a first sealing ring is installed between the end face of one end of the first hollow pipe 51 and the end face of one end of the air inlet transition composite pipe 4, a second hollow pipe 52 is clamped inside the other end of the first hollow pipe 51, a first flange pressing sheet 53 is movably connected to the end face of one end of the second hollow pipe 52, a first inner locking screw 54 is movably sleeved inside the first flange pressing sheet 53, one end of the first inner locking screw 54 penetrates through the inner thread of one end of the second hollow pipe 52 and is connected to the inner side of the other end of the first hollow pipe 51, the other end of the second hollow pipe 52 is fixedly connected with one end of the connecting hose 6, the connection between one end of the first hollow pipe 51 and the air inlet transition composite pipe 4 and the connection between the other end of the first hollow pipe 51 and one end of the second hollow pipe 52 are both provided with reciprocating disassembly maintenance and installation conditions by the connection characteristics of reciprocating disassembly of the first screw 9 and the first internal locking screw 54, the surface of one end of the first hollow pipe 51 and the surface of one end of the air inlet transition composite pipe 4 are respectively provided with a first welding sheet 11 and a second welding sheet 12, one side of the first welding sheet 11 is aligned with and movably connected with one side of the second welding sheet 12, the first welding sheet 11 and the second welding sheet 12 can also realize local welding in the concrete connection process of the first hollow pipe and the air inlet transition composite pipe 4, so as to further improve the connection strength between the air inlet transition composite pipe 4 and the first composite pipe 5, one end of the first composite pipe 5 is fixedly connected with the connecting hose 6, one end of the connecting hose 6 is fixedly connected with a second composite pipe fitting 7, the inside of the second composite pipe fitting 7 comprises a third hollow pipe 71, a second screw 10 is movably sleeved inside one end of the third hollow pipe 71, one end of the second screw 10 is in threaded connection with the inside of the other end of the air outlet transition composite pipe 8, one end of the air outlet transition composite pipe 8 is fixedly connected with the surface of the top of the tubular diffuser disc body 1, a second sealing ring is installed between the end face of one end of the third hollow pipe 71 and the end face of the other end of the air outlet transition composite pipe 8, a fourth hollow pipe 72 is clamped inside the other end of the third hollow pipe 71, the end face of one end of the fourth hollow pipe 72 is movably connected with a second flange pressing sheet 73, a second inner locking screw 74 is movably sleeved inside the second flange pressing sheet 73, one end of the second inner locking screw 74 penetrates through the inside one end of the fourth hollow pipe 72 and is in threaded connection with the inside one end of the third hollow pipe 71, the other end of the fourth hollow pipe 72 is fixedly connected with the other end of the connecting hose 6, the connection between one end of the third hollow pipe 71 and the air outlet transition composite pipe 8 and the connection between the other end of the third hollow pipe 71 and one end of the fourth hollow pipe 72 both have the connection characteristics of reciprocating disassembly, maintenance and installation conditions, the surface of one end of the third hollow pipe 71 and the surface of the other end of the air outlet transition composite pipe 8 are respectively provided with a third welding sheet 13 and a fourth welding sheet 14, one side of the third welding sheet 13 is aligned with and movably connected with one side of the fourth welding sheet 14, the third welding sheet 13 and the fourth welding sheet 14 can realize local welding in the specific connection process of the third hollow pipe and the air outlet transition composite pipe 8, so that the connection strength between the air inlet transition composite pipe 4 and the first composite pipe 5 is further improved, one end of the second composite pipe 7 is provided with the air outlet transition composite pipe 8, the inside pore structure of the compound pipe 8 of giving vent to anger and the inside pore structure of the compound pipe 3 of giving vent to anger are the slope setting, and the inside of the compound pipe 3 of giving vent to anger includes that the number is no less than two ventholes, and set up the inboard at 1 top of tubular diffuser disk body with the mode of circumference array, and the concrete quantity of inside venthole of the compound pipe 3 of giving vent to anger is the same with the inside inlet port quantity of inlet port group 2, the outside of every inlet port of the inside of the compound pipe 8 of giving vent to anger all corresponds and installs one of giving vent to anger transition, give vent to anger transition compound pipe 8 and extend the passageway of the venthole of the inside correspondence of the compound pipe 3 of giving vent to anger, and the same reason, the same with above-mentioned structure principle, also be the part that waits to connect for follow-up provides the installation face and the operation condition of reciprocal maintenance installation, the outside at the compound pipe 3 of giving vent to anger transition 8 one end is installed.

The working principle is as follows: when in use, the first hollow tube 51 inside the air inlet transition composite tube 4 and the first composite tube 5 can be partially welded in the specific connection process between the first welding sheet 11 and the second welding sheet 12 except for the first screw 9 as the connection and fixation condition, so as to further improve the connection strength between the air inlet transition composite tube 4 and the first composite tube 5, and similarly, the third hollow tube 71 inside the air outlet transition composite tube 8 and the second composite tube 7 can be partially welded in the specific connection process between the third welding sheet 13 and the fourth welding sheet 14 except for the second screw 10 as the connection and fixation condition, so as to further improve the connection strength between the air inlet transition composite tube 4 and the first composite tube 5, although the local welding is adopted in the connection process, during subsequent maintenance, the replacement and maintenance can be carried out in a mode of shearing and then disassembling, the third hollow tube 71 and the second flange pressing piece 73 in the second composite pipe 7, and the first hollow tube 51 and the second hollow tube 52 in the first composite pipe 5 are respectively connected by the second internal locking screw 74 and the first internal locking screw 54, so that the maintenance and replacement conditions are also met, and the specific installation process can be adjusted by the structural characteristics of the connecting hose 6 at a small distance and a small angle, so that the installation is convenient.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the invention, the filling pattern is only used for distinguishing the layers and is not limited at all.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.