Test bed air inlet flow guiding device and air inlet flow guider

Abstract

The invention discloses a test bed air inlet flow guiding device and an air inlet flow director, and relates to the technical field of aero-engine test run. The test bed air inlet flow guiding device comprises a frame, the frame is obliquely arranged on one side of an air inlet tower of a test bed, and a limiting piece is fixedly connected to the top of the frame; one side, far away from the frame, of the limiting piece is propped against the side wall of the air inlet tower; the flow deflector is movably installed in the frame, and the angle of the flow deflector in the frame can be adjusted. The test bed air inlet flow guiding device and the air inlet flow director can adapt to tests of various types of engines.

Description

Technical Field

[0001] The invention relates to the technical field of aeroengine test running, and in particular to an air intake guide device and an air intake guider of a test running platform. Background Art

[0002] Aircraft engine test benches are used to simulate the high-altitude operating conditions of engines on the ground. The intake conditions (flow rate, pressure, temperature, uniformity) need to be precisely controlled to reproduce the real flight environment. The test bench air intake guide is used to guide the airflow into the engine intake duct, adjust the airflow direction, and ensure the accuracy and repeatability of the test data. The traditional aircraft engine test bench uses a fixed air intake guide. When the test engine model is changed on the same test bench, the airflow direction required by the test bench changes, and it cannot adapt to the intake requirements of different engine models.

[0003] Therefore, it is urgent to design an intake guide device that can adapt to the testing of various types of engines. Summary of the invention

[0004] The purpose of the present invention is to provide a test bench air intake guide device and an air intake guider to solve the problems existing in the above-mentioned prior art and to be adaptable to the testing of various types of engines.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a test bench air intake guide device, comprising: A frame, the frame is arranged obliquely on one side of the air intake tower of the test bench, the frame comprises a first connecting rod and a second connecting rod arranged in parallel, the top of the first connecting rod and the top of the second connecting rod are fixedly connected by a first supporting rod arranged horizontally, and the bottom of the first connecting rod and the bottom of the second connecting rod are fixedly connected by a second supporting rod arranged horizontally; A stopper, fixedly connected to the top of the frame, and a side of the stopper away from the frame abuts against a side wall of the air intake tower; The guide vane is movably mounted in the frame, and its angle in the frame can be adjusted; the first connecting rod is provided with a plurality of first mounting seats, the second connecting rod is provided with a plurality of second mounting seats corresponding to the first mounting seats, and the guide vane is connected between the first mounting seats and the corresponding second mounting seats; the first mounting seat can rotate radially around the first connecting rod, and the second mounting seat can rotate radially around the second connecting rod. There is no restriction on the adjustment method and adjustment structure of the guide vane, and springs or support rod structures can also be connected at both ends of the guide vane, and the end of the spring or support rod away from the guide vane is connected to a driving mechanism. The driving mechanism can be a linear motor or a cylinder, etc., which can drive the spring to compress and thereby drive the angle of one end of the guide vane to change, or drive the support rod to move forward and backward, thereby driving the angle of one end of the guide vane to change. In other embodiments, a telescopic rod structure may be directly used, with one end of the telescopic rod hinged to one end of the guide plate, and the other end of the telescopic rod hinged to the other end of the guide plate. The extension or shortening of the telescopic rod may be controlled by a motor, thereby driving the two ends of the guide plate to bend to different angles, thereby achieving the adjustment of the angle and curvature of the guide plate.

[0006] The inclination angle of the frame of the vehicle platform air intake guide device can be changed, thereby driving the angle of the guide vane in the frame to change accordingly. The inclination angle of the frame can be adjusted according to the test bench structure during actual use. After adjustment, a limit piece is welded to the top of the frame so that the limit piece abuts against the air intake tower away from one end of the frame, so that the frame is fixed to one side of the air intake tower at a pre-adjusted angle, so that the frame angle and the initial setting form of the guide vane are adapted to the test bench; and then by adjusting the angle of the guide vane in the frame, the angle of the guide vane can be changed in a targeted manner according to the testing requirements of different types of engines to achieve a change in the airflow direction, so that the present invention can be adapted to the testing of various types of engines.

[0007] Preferably, it also includes a bottom support, which is fixedly arranged on the embedded plate at the bottom of the test bench. The bottom of the frame is rotatably connected to the bottom support. The rotatable connection can be hinged or connected by a rotating wheel. A gear structure can also be fixedly arranged on the bottom of the frame. A gear is also arranged on the bottom support. The two gears are meshed, and the gear of the bottom support is externally connected to a motor. The transmission is transmitted through the meshing of the two gears, so that the rotatable connection between the bottom support and the bottom of the frame can be realized.

[0008] Preferably, the stopper is fixed to the top of the first connecting rod; the guide vane is movably arranged between the first connecting rod and the second connecting rod; the second connecting rod and the second supporting rod are movably connected to the bottom support. The frame only needs to be able to realize an inclined arrangement relative to the test bench and be able to carry the guide vane. Therefore, in other embodiments, the frame can be made into an integrated structure or a split structure, and the frame can be a rectangular frame or an irregularly shaped frame.

[0009] Preferably, the guide plate is an arc-shaped structure, and the guide plate is made of a flexible material. The flexible material is a known material without specific limitation. For example, elastic plastic, hard rubber, or thin sheet metal can be used.

[0010] Preferably, the first connecting rod is fixedly provided with a plurality of connecting shafts perpendicular to the axis of the first connecting rod, the second connecting rod is fixedly provided with a plurality of connecting shafts perpendicular to the axis of the second connecting rod, the connecting shaft on the first connecting rod is rotatably connected to the first mounting seat, the connecting shaft on the second connecting rod is rotatably connected to the second mounting seat, one end of the guide plate is fixedly connected to the first mounting seat, and the other end is fixedly connected to the corresponding second mounting seat.

[0011] Preferably, the bottom support includes a support frame, the bottom of the support frame is fixedly connected to the embedded plate at the bottom of the test bench, the top of the support frame is rotatably connected with a pin shaft, an axial hole is fixedly provided at the connection position of the second connecting rod and the second support rod, and the pin shaft is movably inserted into the axial hole.

[0012] Preferably, a plurality of obliquely arranged reinforcing rods are connected between the first connecting rod and the second connecting rod, and the inclination directions of two adjacent reinforcing rods are opposite.

[0013] The present invention also provides an air intake deflector, comprising the air intake deflector device as described above, wherein a plurality of the air intake deflectors are arranged in sequence and transversely; and two adjacent deflectors located at the same height are fixedly connected.

[0014] Preferably, it further comprises side plates. When a plurality of the air intake guide devices are arranged uniformly in transverse direction, the side plates are fixedly provided on the outer sides of the frames at the two transverse ends.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: The inclination angle of the frame of the air intake guide device of the test bench of the present invention can be changed, thereby driving the angle of the guide vane in the frame to follow the change. The inclination angle of the frame can be adjusted according to the test bench structure during actual use. After the adjustment, a limit piece is welded to the top of the frame so that the limit piece abuts against the air intake tower away from one end of the frame, so that the frame is fixed to one side of the air intake tower at a pre-adjusted angle, so that the frame angle and the initial setting form of the guide vane are adapted to the test bench; and then by adjusting the angle of the guide vane in the frame, the angle of the guide vane can be changed in a targeted manner according to the testing requirements of different types of engines to achieve a change in the airflow direction, so that the present invention can be adapted to the testing of various types of engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is an axonometric view of an air intake guider in one or some embodiments of the present invention; Figure 2 It is a schematic structural diagram of an air intake guide device of a test bench in one or some embodiments of the present invention; Figure 3 for Figure 1 The main view of Figure 4 for Figure 3 An enlarged schematic diagram of A1; Figure 5 for Figure 3 BB cross-sectional view; Figure 6 for Figure 5 An enlarged schematic diagram of B1; Figure 7 for Figure 5 An enlarged schematic diagram of B2; Figure 8 for Figure 5 An enlarged schematic diagram of B3.

[0018] In the figure: 1-frame, 101-first connecting rod, 102-second connecting rod, 103-first support rod, 104-second support rod, 105-reinforcement rod, 2-bottom support, 3-guide plate, 4-limiting member, 5-pin shaft, 6-nut, 7-flat washer, 8-cotter pin, 9-first mounting seat, 10-second mounting seat, 11-intake tower, 12-embedded plate, 13-bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide a test bench air intake guide device and an air intake guider to solve the problems existing in the above-mentioned prior art and to be adaptable to the testing of various types of engines.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The conventional air intake guide for an aircraft engine test bench is fixed. When the same test bench changes the test engine model, the airflow direction required by the test bench changes, and it cannot adapt to the air intake requirements of engines of different models. In order to solve this technical problem, the present invention provides an air intake guide device for a test bench, referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, it includes a frame 1, a limit member 4 and a guide vane 3. The frame 1 is made of stainless steel such as 304 and 316, and is arranged obliquely on one side of the air intake tower 11 of the test bench. The test bench and its air intake tower 11 are both existing structures, so they are not described in detail; the limit member 4 is fixedly connected to the top of the frame 1, and the side of the limit member 4 away from the frame 1 is in contact with the side wall of the air intake tower 11; the guide vane 3 is movably installed in the frame 1, and its angle in the frame 1 can be adjusted. Figure 2 The arrow in the figure indicates the flow direction of the airflow. During the installation process of the air intake guide device of the test bench of the present invention, the inclination angle of the frame 1 is first adjusted to make its angle preliminarily matched with the test bench. After the angle is adjusted, the limit piece 4 is welded to the top of the frame 1, and the end of the limit piece 4 away from the frame 1 abuts against the air intake tower 11 of the test bench, so that the frame 1 always maintains the inclination angle unchanged during subsequent use; at the same time, the angle of the guide plate 3 in the frame 1 can also be adjusted. When the airflow flows to the position of the frame 1, it enters the test bench after being guided by the guide plate 3. The change in the angle and curvature of the guide plate 3 can change the flow direction of the airflow entering the test bench. Therefore, the angle of the guide plate 3 can be changed accordingly according to the test requirements of different types of engines to achieve a change in the airflow direction, so that the present invention can be adapted to the testing of various types of engines.

[0023] In order to make the angle adjustment of the frame 1 of the present invention more convenient before installation, in one embodiment, a bottom support 2 is provided at the bottom of the frame 1. The bottom support 2 of this embodiment includes a support frame, the bottom of the support frame is fixedly connected to the embedded plate 12 at the bottom of the test bench, and a U-shaped support is provided at the top of the support frame. A pin shaft 5 is rotatably connected in the support. An axial hole is fixedly provided at the bottom position of the frame 1, and the pin shaft 5 is movably penetrated in the axial hole. When installing, the axial hole is arranged in the U-shaped support, and the axial hole and the through holes on the two side walls of the support are connected. Coaxially, the pin shaft 5 is inserted from the through hole of the side wall at one end of the support, and then passes through the shaft hole and the through hole of the side wall at the other end of the support in sequence, and then fixedly connected with a nut 6, and a split pin 8 is arranged on the outside of the nut 6, and the split pin 8 is fixedly inserted into the pin hole at the end of the pin shaft 5 to limit the position of the nut 6 and prevent the pin shaft 5 from being separated from the support. In order to make the connection tighter, a flat washer 7 made of stainless steel is fixedly arranged on the side of the nut 6 close to the side wall of the support, so that the pin shaft 5 and the support can be fixed, and the shaft hole is rotatably sleeved on the pin shaft 5. In another embodiment, the pin shaft 5 can also be rotatably connected with the through hole of the support, and the function of the frame 1 rotating around the pin shaft 5 can also be realized. The rotational connection method of the present invention is not limited to the above-mentioned structure, and can adopt a pin-shaft hinge method or a rotating wheel connection method. A rotating wheel is fixedly set at the bottom of the frame 1, and the rotating shaft of the rotating wheel is rotatably connected to the bottom support 2, and the relative rotation between the frame 1 and the bottom support 2 can also be achieved; a gear structure can also be fixedly set at the bottom of the frame 1, and a gear is also set on the bottom support 2. The two gears are meshed, and the gear of the bottom support 2 is externally connected to the motor. The transmission is transmitted through the meshing of the two gears, so that the rotational connection between the bottom support 2 and the bottom of the frame 1 can also be achieved.

[0024] In one embodiment, the frame 1 includes a first connecting rod 101 and a second connecting rod 102 arranged in parallel, the top of the first connecting rod 101 and the top of the second connecting rod 102 are fixedly connected by a first support rod 103, the bottom of the first connecting rod 101 and the bottom of the second connecting rod 102 are fixedly connected by a second support rod 104, the limiter 4 is fixed to the top of the first connecting rod 101, the first connecting rod 101 and the second connecting rod 102 have the same structure, and can be a rectangular tube or a round tube made of metal, the first support rod 103 and the second support rod 104 have the same structure, and can be a rectangular tube or a round tube made of metal. The specific structure of the frame 1 is not limited, as long as it can be arranged tilted relative to the test bench and can carry the guide vane 3, so in other embodiments, the frame 1 can be made into an integrated structure or a split structure, and the cross section of the frame 1 can be a rectangular structure or an irregular polygonal structure.

[0025] The guide plate 3 is an arc-shaped structure, and the guide plate 3 is made of a flexible material, for example, the guide plate 3 can be made of a steel plate, so that the guide plate 3 has a certain elasticity, which is convenient for changing the angle and curvature of the guide plate 3; in order to achieve the change of the angle and curvature of the guide plate 3 itself, in this embodiment, a plurality of connecting shafts perpendicular to the axis of the first connecting rod 101 are fixedly provided on the first connecting rod 101, and a plurality of connecting shafts perpendicular to the axis of the second connecting rod 102 are fixedly provided on the second connecting rod 102, the connecting shaft on the first connecting rod 101 is rotatably connected to the first mounting seat 9, and the connecting shaft on the second connecting rod 102 is rotatably connected to the second mounting seat 9. Mounting seat 10, one end of the guide plate 3 is attached to the side wall of the first mounting seat 9, and is fixedly connected to the first mounting seat 9 by bolts 13 and nuts 6, and a flat washer 7 made of stainless steel is arranged on the side of the nut 6 close to the guide plate 3, so that the connection between the guide plate 3 and the first mounting seat 9 is more firm and stable, and the other end of the guide plate 3 is fixedly connected to the corresponding second mounting seat 10, and is fixedly connected to the second mounting seat 10 by bolts 13 and nuts 6, and a flat washer 7 made of stainless steel is arranged on the side of the nut 6 close to the guide plate 3, so that the connection between the guide plate 3 and the second mounting seat 10 is more firm and stable. By rotating the first mounting seat 9 or the second mounting seat 10, the curvature and angle of the guide plate 3 can be changed, thereby changing the overall angle of the guide plate 3.

[0026] The adjustment method and adjustment structure of the guide vane 3 are not limited. In another embodiment, the two ends of the guide vane 3 can also be connected to a spring or a support rod structure. The end of the spring or the support rod away from the guide vane 3 is connected to a driving mechanism. The driving mechanism can be a linear motor or a cylinder, etc., which can drive the spring to compress and thereby drive the angle of one end of the guide vane 3 to change, or drive the support rod to move forward and backward, thereby driving the angle of one end of the guide vane 3 to change. In other embodiments, a telescopic rod structure can also be directly used, one end of the telescopic rod is hinged to one end of the guide vane 3, and the other end of the telescopic rod is hinged to the other end of the guide vane 3. The extension or shortening of the telescopic rod can be controlled by a motor, thereby driving the two ends of the guide vane 3 to bend to different angles, thereby achieving the adjustment of the angle and curvature of the guide vane 3.

[0027] In order to increase the strength of the frame 1 , in one embodiment, a plurality of obliquely arranged reinforcing rods 105 are connected between the first connecting rod 101 and the second connecting rod 102 , and the inclination directions of two adjacent reinforcing rods 105 are opposite, thereby enhancing the stability of the frame 1 .

[0028] Based on the above solution, the present invention also provides an air intake guide, such as Figure 1As shown, it includes the above-mentioned air intake guide device, and multiple air intake guide devices are arranged horizontally in sequence to form a rectangular structure. In this embodiment, six air intake guide devices are arranged horizontally in sequence; two guide vanes 3 located at the same height and adjacent to each other are fixedly connected. In one embodiment, the six air intake guide devices have the same structure, and the six guide vanes 3 on the six first mounting seats 9 and the second mounting seats 10 located at the same height can adopt an integrated molding structure, that is, the guide vanes 3 located at the same height are made of an integral steel plate to form a complete arc structure, one end of the arc structure of the guide vane 3 is fixedly connected to the first mounting seat 9 at the same height on the six air intake guide devices, and the other end of the arc structure of the guide vane 3 is fixedly connected to the second mounting seat 10 at the same height on the six air intake guide devices, so that the air intake deflector of the present invention has better integrity, the air guiding process of the guide vane 3 is smoother, and the leakage from the gap when the six split guide vanes 3 are arranged horizontally in parallel is reduced. In order to further reduce gas loss, side panels are provided in this embodiment. When the six air intake guide devices are arranged evenly in the horizontal direction, a side panel is fixedly provided on the outer side of the first frame 1 at one horizontal end, and a side panel is fixedly provided on the outer side of the sixth frame 1 at the other horizontal end, so that when air is taken in, it can be blocked by the side panels to prevent gas leakage from the outside of the air intake guide.

[0029] The inclination angle of the frame 1 of the air intake guide device of the test bench of the present invention can be changed, thereby driving the angle of the guide plate 3 in the frame 1 to change accordingly. The inclination angle of the frame 1 can be adjusted according to the test bench structure during actual use. After adjustment, a limit member 4 is welded to the top of the frame 1 so that the limit member 4 abuts against the air intake tower at one end away from the frame 1, so that the frame 1 is fixed to one side of the air intake tower at a pre-adjusted angle, so that the angle of the frame 1 and the initial setting form of the guide plate 3 are adapted to the test bench; and then by adjusting the angle of the guide plate 3 in the frame 1, the angle of the guide plate 3 can be changed in a targeted manner according to the test requirements of different types of engines to achieve a change in the airflow direction, so that the present invention can be adapted to the testing of various types of engines.

[0030] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A test bench air intake guide device, characterized in that: include: A frame, the frame is arranged obliquely on one side of the air intake tower of the test bench, the frame comprises a first connecting rod and a second connecting rod arranged in parallel, the top of the first connecting rod and the top of the second connecting rod are fixedly connected by a first supporting rod, and the bottom of the first connecting rod and the bottom of the second connecting rod are fixedly connected by a second supporting rod; A stopper, fixedly connected to the top of the frame, and a side of the stopper away from the frame abuts against a side wall of the air intake tower; The guide vane has an arc-shaped structure and is made of a flexible material; it is movably mounted in the frame, and its angle in the frame can be adjusted; a plurality of first mounting seats are provided on the first connecting rod, a plurality of second mounting seats corresponding to the first mounting seats are provided on the second connecting rod, and the guide vane is connected between the first mounting seats and the corresponding second mounting seats; the first mounting seat can rotate radially around the first connecting rod, and the second mounting seat can rotate radially around the second connecting rod.

2. The test bench air intake guide device according to claim 1, characterized in that: It also includes a bottom support, which is fixedly arranged on a pre-embedded plate at the bottom of the test bench, and the bottom of the frame is rotatably connected to the bottom support.

3. The test bench air intake guide device according to claim 2, characterized in that: The limiting member is fixed to the top of the first connecting rod; the guide plate is movably arranged between the first connecting rod and the second connecting rod; and the second connecting rod is movably connected to the bottom support at the connecting position of the second supporting rod.

4. The test bench air intake guide device according to claim 1, characterized in that: The first connecting rod is fixed with a plurality of connecting shafts perpendicular to the axis of the first connecting rod, and the second connecting rod is fixed with a plurality of connecting shafts perpendicular to the axis of the second connecting rod. The connecting shaft on the first connecting rod is rotatably connected to the first mounting seat, and the connecting shaft on the second connecting rod is rotatably connected to the second mounting seat. One end of the guide plate is fixedly connected to the first mounting seat, and the other end is fixedly connected to the corresponding second mounting seat.

5. The test bench air intake guide device according to claim 3, characterized in that: The bottom support includes a support frame, the bottom of the support frame is fixedly connected to the embedded plate at the bottom of the test bench, the top of the support frame is rotatably connected with a pin shaft, an axial hole is fixedly provided at the connection position of the second connecting rod and the second support rod, and the pin shaft is movably inserted into the axial hole.

6. The test bench air intake guide device according to claim 3, characterized in that: A plurality of obliquely arranged reinforcing rods are connected between the first connecting rod and the second connecting rod, and the inclination directions of two adjacent reinforcing rods are opposite.

7. An air intake deflector, characterized in that: The air intake guide device comprises the air intake guide device according to any one of claims 1 to 6, wherein a plurality of the air intake guide devices are arranged in a transverse arrangement in sequence; Two adjacent guide plates located at the same height are fixedly connected.

8. The air intake guider according to claim 7, characterized in that: It also includes side plates. When a plurality of the air intake guide devices are arranged uniformly in a transverse manner, the side plates are fixedly provided on the outer sides of the frames at the two transverse ends.

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