CN112945563B - Reverse thrust prevention exhaust device for engine performance recording test - Google Patents
Reverse thrust prevention exhaust device for engine performance recording test Download PDFInfo
- Publication number
- CN112945563B CN112945563B CN202110158611.9A CN202110158611A CN112945563B CN 112945563 B CN112945563 B CN 112945563B CN 202110158611 A CN202110158611 A CN 202110158611A CN 112945563 B CN112945563 B CN 112945563B
- Authority
- CN
- China
- Prior art keywords
- section
- air inlet
- canvas
- engine
- thrust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Engines (AREA)
Abstract
The application belongs to the field of aircraft engines, and particularly relates to an engine performance recording test reverse thrust prevention exhaust device. The method comprises the following steps: the air inlet duct (1), the air inlet guide pipe (2), the conical adapting section (3) and the canvas section (4). The air inlet channel (1) is fixedly arranged on the rack (5); the air inlet guide pipe (2) is fixedly arranged on the bracket (6); the large opening end of the conical adapter section (3) is connected with the air inlet guide pipe (2); one end of the canvas section (4) is connected with the air inlet channel (1), and the other end is connected with the small opening end of the conical switching section (3). This application possesses certain sealed function, can prevent that the backstepping exhaust from inhaling the engine again, does not produce the hard joint with the engine, does not influence the thrust measurement of engine, has avoided because the vibration of engine and the rocking of switching section produce unnecessary to bump the mill to engine technology intake duct, can satisfy the installation requirement of engine and other auxiliary test equipment and the operation requirement under the harsh test environment.
Description
Technical Field
The application belongs to the field of aircraft engines, and particularly relates to an engine performance admission test reverse thrust prevention exhaust device.
Background
In order to obtain the standard performance of a certain engine in a positive thrust state and a reverse thrust state when a reverse thrust device is assembled, a performance recording test is planned to be carried out. During testing, in order to avoid the influence of crosswind and the like in a positive thrust state on the air inlet flow field of the engine and prevent reverse exhaust from being sucked into the inlet of the engine again in a reverse thrust state and damaging the uniformity of the air inlet flow field of the engine, an air inlet guide pipe and a corresponding sealing adapter device are additionally arranged in front of the air inlet passage of the engine. At the same time, it must be ensured that the sealing device has good tightness in the range of operating pressures and temperatures that may be encountered in the system.
At present, no anti-reverse-thrust exhaust device for an aeroengine performance recording test, which can be used for a standard performance recording test of a forward thrust state and a reverse thrust state of engines of various models, is available, prevents exhaust from entering the engines, ensures the functions of uniform air intake, linear movement, butt joint and the like of the engines in the presence of crosswind, and has great significance for researching the aeroengine performance recording test. The effect of the vibrations should be taken into account. The engine components should be able to withstand the vibrations caused by the operation of the engine without being damaged. The material selection should consider the factors of structural function, stress characteristics, working environment (such as temperature, humidity, salt spray, mould and the like), and the like, and the material meets the relevant standards and is qualified by the identification of relevant national departments. On the premise of meeting the function, the economic requirement must be considered, and the extra cost caused by change and maintenance is reduced.
It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide an engine performance recording test reverse thrust prevention exhaust device to solve at least one problem in the prior art.
The technical scheme of the application is as follows:
an engine performance admission test reverse thrust prevention exhaust device comprises:
the air inlet channel is fixedly arranged on the rack;
the air inlet guide pipe is fixedly arranged on the bracket;
the large opening end of the conical adapter section is connected with the air inlet guide pipe;
and one end of the canvas section is connected with the air inlet channel, and the other end of the canvas section is connected with the small opening end of the conical switching section.
Optionally, the rack is arranged on the ground and is connected with the air inlet through an air inlet pre-assembly rack.
Optionally, a steel plate is pre-embedded in the ground, and the support is arranged on the steel plate through a foundation support and a fixing pile.
Optionally, a first mounting edge is arranged at the large opening end of the conical adapter section, a second mounting edge is arranged at the small opening end of the conical adapter section, and the conical adapter section is connected with the air inlet pipe flange through the first mounting edge and connected with the canvas section through the second mounting edge.
Optionally, the outer wall surface of the conical adapter section is provided with a reinforcing rib.
Optionally, the outer wall surface of the conical adapter section is provided with a pressure measuring joint.
Optionally, the outer wall surface of the conical adapter section is provided with a hanging ring.
Optionally, the canvas section is of a double-layer structure, one end of the canvas section is provided with a flange, a nylon rope is arranged in the flange and is bound to the cylinder wall of the air inlet channel through the nylon rope, the other end of the canvas section is uniformly provided with mounting holes along the circumferential direction and is fixed on the second mounting edge of the conical switching section through bolts.
Optionally, the canvas segment is formed by splicing 10 fan-shaped canvas blocks.
Optionally, a zipper is adopted between two adjacent fan-shaped canvas blocks for closing, and cloth adhesive edges are arranged on the inner side and the outer side of the zipper for sealing.
The invention has at least the following beneficial technical effects:
the utility model provides an engine performance admission test prevents reverse-thrust exhaust apparatus possesses certain sealed function, can prevent that reverse-thrust exhaust from inhaleing the engine again, does not produce the hard joint with the engine, does not influence the thrust measurement of engine, has avoided because the vibration of engine and the rocking of switching section produce unnecessary to the engine technology intake duct and bump the mill, can satisfy the installation requirement of engine and other auxiliary test equipment and the operation requirement under the harsh test environment.
Drawings
FIG. 1 is a schematic illustration of an engine performance recording test thrust reversal prevention exhaust device according to one embodiment of the present application;
FIG. 2 is a schematic illustration of a tapered transition of an engine performance recording test anti-thrust-back exhaust apparatus according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a tapered canvas section of an engine performance recording test anti-thrust exhaust apparatus according to an embodiment of the present application;
FIG. 4 is a schematic view of an arc canvas block of an engine performance recording test anti-thrust exhaust apparatus according to an embodiment of the present application.
Wherein:
1-an air inlet channel; 2-an air intake duct; 3-a conical transition section; 31-reinforcing ribs; 32-pressure taps; 33-a hoisting ring; 34-a first mounting edge; 35-a second mounting edge; 4-canvas section; 41-flanging; 42-nylon cord; 43-a zipper; 44-cloth edge bonding; 45-mounting holes; 5-a gantry; 51-air inlet channel pre-assembling frame; 6-a scaffold; 61-ground foot supporting; 62-fixing the pile; 7-ground; 71-steel plate.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below 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 a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing the present application and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1 to 4.
The application provides an anti-back-push exhaust apparatus of engine performance admission test, include: the air intake duct comprises an air intake duct 1, an air intake duct 2, a conical transition section 3 and a canvas section 4.
Specifically, as shown in fig. 1, the air intake duct 1 is fixedly installed on a rack 5, wherein the rack 5 is fixedly installed on the ground 7 and is connected with the air intake duct 1 through an air intake duct pre-installation rack 51. Air intake duct 2 fixed mounting is on support 6, and in this embodiment, through pre-buried steel sheet 71 on ground 7, support 6 passes through lower margin support 61 and spud pile 62 sets up on steel sheet 61, realizes air intake duct 2's installation.
Further, the big opening end of the conical adapter section 3 is connected with the air inlet guide pipe 2, and the small opening end of the conical adapter section 3 is connected with the air inlet channel 1 through the canvas section 4. In the working state, the conical adapter section 3 is not only subjected to the impact of the reverse thrust airflow from the engine reverse thrust device, but also subjected to the wind power of the natural environment, so that the fixed connection of the conical adapter section 3 on the test site is particularly important. In an embodiment of this application, as shown in fig. 2, 3 major structures of toper changeover portion are the toper barrel, big open end is provided with first installation limit 34, little open end is provided with second installation limit 35, toper changeover portion 3 is through first installation limit 34 and intake duct 2 flange joint, and intake duct 2 between connecting bolt adopt high strength bolt, all high strength bolts all adopt the fat liquoring to carry out rust-resistant protection and regularly inspect and fat liquoring simultaneously, toper changeover portion 3 is connected with canvas section 4 through second installation limit 35, and then realize the flexible coupling with intake duct 1.
In a preferred embodiment of the present application, because the conical transition section 3 is used and stored in an open air environment, the design of the conical transition section 3 takes the requirements of corrosion resistance, rust resistance and the like of the conical transition section 3 into consideration, the conical transition section 3 is made of stainless steel, and during manufacturing, surface treatment such as rust removal, oil stain removal and the like is firstly performed, then zinc thermal spraying is performed, and finally, antirust paint and finish paint are sprayed on the surface. Advantageously, in this embodiment, a reinforcing rib 31, a pressure measuring connector 32 and a hanging ring 33 are further disposed on an outer wall surface of the conical adapting section 3, so that the stability of the conical adapting section 3 is enhanced, and the effects of measuring air flow parameters and facilitating hoisting and transportation are achieved.
The utility model provides an engine performance admission is experimental prevents backstepping exhaust apparatus, in order to guarantee engine and intake duct safety, avoids toper changeover portion 3 to produce unnecessary and bump the mill to engine technology intake duct 1 because the vibration of engine and the rocking of changeover portion in the use, consequently leaves certain clearance between toper changeover portion 3 and the technology intake duct 1 to adopt canvas section 4 to carry out the flexible coupling sealed.
In a preferred embodiment of this application, adopt high temperature resistant waterproof military canvas material's canvas section 4 to connect between toper changeover portion 3 and the section of thick bamboo wall of intake duct 1, realize the sealed function of changeover, can also make canvas section 4 double-deck structure, improve canvas overall structure intensity. Advantageously, in this embodiment, one end of the canvas section 4 is provided with a flange 41, a flange hole with a certain width is reserved on the flange 41 for penetrating a nylon rope 42, and the end is bound to the cylinder wall of the air inlet duct 1 through the nylon rope 42, so as to realize sealed installation. The other end of canvas section 4 has evenly seted up mounting hole 45 along circumference, passes mounting hole 45 through the bolt, fixes canvas section 4 and compresses tightly on the second installation limit 35 of toper changeover portion 3. It will be appreciated that the mounting holes 45 are painted with white latex and sewn transversely three times to improve strength at the holes. In addition, the end of the canvas section 4 provided with the mounting hole 45 can also be provided with a flanging 41 structure, and is bound on the cylinder wall of the air inlet guide pipe 2 through a nylon rope 42 in the flanging 41, so that double guarantee is realized.
In addition, for satisfying join in marriage requirement that dress in- process canvas section 4 and 1 lip of intake duct do not take place to interfere, the mode that the concatenation of 6 above fan-shaped canvas pieces formed need be made to canvas section 4. In a preferred embodiment of the present application, as shown in fig. 3 to 4, a splicing manner of 10 fan-shaped canvas blocks is selected in consideration of the influence of the size and width of the larger canvas block. Further, consider the in service behavior of canvas piece, when intake duct 1 measures section diameter change (being less than or equal to 2000 mm) and intake duct 1 center height change (5 m ~ 6 m), the canvas piece should possess the ability of reequiping in order to adapt to new intake duct 1 size, so two adjacent fan-shaped canvas piece junctions have adopted the connected mode of zip fastener 43, for reducing the zip fastener 43 number and not influencing the circumstances of joining in marriage, 4 of them junctions adopt the sewing closure, 6 junctions adopt durable zip fastener 43 to connect. Advantageously, in this embodiment, the material of the zipper 43 is nylon 5, the inner and outer sides of the zipper 43 are provided with cloth adhesive edges 44 for sealing, and the adhered part is sewn firmly in the transverse or vertical direction.
The anti-reverse-thrust exhaust device for the engine performance recording test has a certain sealing function, and can prevent reverse-thrust exhaust from being sucked into an engine; the device is not in hard connection with the engine, and the thrust measurement of the engine is not influenced; the internal airflow flows uniformly, so that the uniformity of air inlet of the engine can be ensured; toper switching section structure is the steel construction, and the expend with heat and the shrinkage that natural environment high and low temperature leads to all can not cause the damage to the baffle structure, and toper switching section has carried out corresponding anticorrosive, rust-resistant treatment. This application has adopted the mode that hard coupling and flexible coupling combine to realize the switching sealing function, and is rational in infrastructure, intensity is reliable, can reduce test cost to a certain extent, improves test efficiency, can satisfy the experimental requirement of positive and negative thrust state performance.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within 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 (6)
1. The utility model provides an engine performance admission test prevents reverse thrust exhaust apparatus which characterized in that includes:
the air inlet channel (1), wherein the air inlet channel (1) is fixedly arranged on the rack (5);
the air inlet guide pipe (2), the air inlet guide pipe (2) is fixedly arranged on the bracket (6);
the large opening end of the conical adapter section (3) is connected with the air inlet guide pipe (2);
one end of the canvas section (4) is connected with the air inlet channel (1), and the other end of the canvas section (4) is connected with the small opening end of the conical switching section (3);
a first mounting edge (34) is arranged at the large opening end of the conical adapter section (3), a second mounting edge (35) is arranged at the small opening end of the conical adapter section, the conical adapter section (3) is connected with the air inlet guide pipe (2) through the first mounting edge (34) in a flange mode, and is connected with the canvas section (4) through the second mounting edge (35);
the canvas section (4) is of a double-layer structure, one end of the canvas section (4) is provided with a flanging (41), a nylon rope (42) is arranged in the flanging (41) and is bound to the cylinder wall of the air inlet (1) through the nylon rope (42), and the other end of the canvas section (4) is uniformly provided with mounting holes (45) along the circumferential direction and is fixed on a second mounting edge (35) of the conical adapter section (3) through bolts;
the canvas section (4) is formed by splicing 10 fan-shaped canvas blocks;
the two adjacent fan-shaped canvas blocks are closed by a zipper (43), and cloth adhesive edges (44) are arranged on the inner side and the outer side of the zipper (43) for sealing.
2. The anti-thrust-back exhaust device for the engine performance recording test according to claim 1, characterized in that the stand (5) is arranged on the ground (7) and is connected with the air inlet (1) through an air inlet pre-assembly stand (51).
3. The engine performance recording test anti-thrust-back exhaust device according to claim 2, wherein a steel plate (71) is embedded in the ground (7), and the bracket (6) is arranged on the steel plate (71) through a ground support (61) and a fixing pile (62).
4. The engine performance admission test anti-thrust exhaust device according to claim 1, characterized in that the outer wall surface of the conical adapter section (3) is provided with ribs (31).
5. The engine performance admission test anti-thrust-back exhaust device according to claim 1, characterized in that the outer wall surface of the conical adapter section (3) is provided with a pressure tap (32).
6. The engine performance admission test anti-thrust-back exhaust device according to claim 1, characterized in that the outer wall surface of the conical adapter section (3) is provided with a lifting ring (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158611.9A CN112945563B (en) | 2021-02-05 | 2021-02-05 | Reverse thrust prevention exhaust device for engine performance recording test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158611.9A CN112945563B (en) | 2021-02-05 | 2021-02-05 | Reverse thrust prevention exhaust device for engine performance recording test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112945563A CN112945563A (en) | 2021-06-11 |
| CN112945563B true CN112945563B (en) | 2022-11-22 |
Family
ID=76243991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110158611.9A Active CN112945563B (en) | 2021-02-05 | 2021-02-05 | Reverse thrust prevention exhaust device for engine performance recording test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112945563B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859577B (en) * | 2021-10-13 | 2024-06-04 | 西北工业大学 | Mobile test bed air inlet channel adapting to complex outfield environment and design method thereof |
| CN114112404B (en) * | 2021-11-11 | 2023-07-21 | 中国航发沈阳发动机研究所 | Test run baffle structure of engine thrust reverser and assembly method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8051662B2 (en) * | 2009-02-10 | 2011-11-08 | United Technologies Corp. | Transition duct assemblies and gas turbine engine systems involving such assemblies |
| US8615982B2 (en) * | 2011-07-05 | 2013-12-31 | Hamilton Sundstrand Corporation | Integrated electric variable area fan nozzle thrust reversal actuation system |
| CN202255879U (en) * | 2011-09-15 | 2012-05-30 | 四川成发航空科技股份有限公司 | Test bench of engine reverse thrust device |
| CN102507065B (en) * | 2011-11-28 | 2013-08-14 | 中国航天科技集团公司第四研究院四0一所 | Device for reducing thrust and vibration at pipeline ends |
| CN204064667U (en) * | 2014-08-26 | 2014-12-31 | 江苏华强新能源科技有限公司 | A kind of admission gear for gas turbine test platform |
| CN106907244A (en) * | 2017-05-04 | 2017-06-30 | 中国航空工业集团公司西安飞机设计研究所 | A kind of engine inlets flexible connecting structure |
| CN207554238U (en) * | 2017-11-20 | 2018-06-29 | 中国航发沈阳发动机研究所 | Prevent the engine inlets structure of axial thermal expansion |
-
2021
- 2021-02-05 CN CN202110158611.9A patent/CN112945563B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112945563A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112945563B (en) | Reverse thrust prevention exhaust device for engine performance recording test | |
| CN102582784A (en) | Process for sectionally putting up ship berths or docks | |
| CN110440054A (en) | Subway station refrigerator room pipeline assembling constructing method | |
| CN204004910U (en) | A kind of corrugated nozzle cuff structure connecting for corrugated steel culvert | |
| CN203783717U (en) | Air outlet hard tube assembly structure for automobile intercooler | |
| CN219219584U (en) | Connecting piece for roof exhaust and roof exhaust device | |
| CN207360518U (en) | Sealing device for the interim floating of ship | |
| CN202229887U (en) | Water tightness detection device for diesel engine cylinder block water jacket and cylinder sleeve water jacket | |
| CN210847023U (en) | Vacuum hole sealing furnace for spraying ball hole sealing | |
| CN211775770U (en) | Synchronous dismouting mould of reservation entrance to a cave | |
| CN103900397B (en) | A kind of light-weight steel cage structure tower indirect air cooling method of energy anti-freezing economical | |
| CN215862796U (en) | Constant-pressure locomotive lubricating device convenient for installing lubricating rod | |
| CN206694697U (en) | A kind of twin fixed guide-vane taper connector | |
| CN206934807U (en) | A kind of greasy dirt connecting tube for being coated with self-cleaning coat | |
| CN215888418U (en) | Three-bin water supply device | |
| CN206274094U (en) | A kind of reserved riser clip pedestal protector of offshore platform | |
| CN212513527U (en) | Novel sealing detection device for automobile exhaust pipe | |
| CN220623161U (en) | Vertical fire hose connecting valve | |
| CN214034136U (en) | Green's prefabricated construction | |
| CN217950435U (en) | Mutual-aid structure for ventilation parallel pipelines in tunnel construction | |
| CN205918525U (en) | Car intercooler outlet duct | |
| CN212131599U (en) | Water heating pipe joint with good sealing performance | |
| CN218267486U (en) | Rust-resistant corrosion-resistant long-life hydrovalve | |
| CN210164537U (en) | Well fixed subassembly of air inlet steel pipe that digs | |
| CN219467976U (en) | Detachable mouth cover and frame assembly of deep groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |