A turboprop engine test cell

Abstract

The present application relates to the technical field of turboprop engine, in particular to a turboprop engine test room. A turboprop engine test room, comprising: a factory building, a rack is arranged in the factory building, a turboprop engine is placed on the rack, and a propeller is arranged at one end of the turboprop engine; a flow guide device is arranged in the factory building, the flow guide device is located at one end of the propeller, the flow guide device comprises a walking mechanism and a flow guide ring, the flow guide ring is arranged on the walking mechanism, the propeller is arranged at the outlet of the flow guide ring, and the bottom of the walking mechanism is provided with rollers for movement. By arranging the flow guide ring on the walking mechanism and arranging the rollers at the bottom of the walking mechanism, the flow guide ring can move forward and backward, the relative position relationship between the flow guide ring and the propeller can be adjusted, so that the propeller of different models of turboprop engines can be located in the contraction section of the flow guide ring, the test of different models of turboprop engines can be satisfied, the utilization rate is improved, and waste is prevented.

Description

Technical Field

[0001] This invention relates to the field of turboprop engine technology, and more specifically to a turboprop engine test workshop. Background Technology

[0002] Ground-based indoor test rigs for turboprop engines are crucial testing equipment for the research and production of turboprop engines. During turboprop engine testing, the airflow velocity and the uniformity of airflow at the propeller tip within the test rig significantly impact the test results. Because the propeller operates with a large airflow volume and high velocity, without throttling and flow restriction, the secondary airflow ejected by the high-speed propeller flow will result in extremely high airflow velocities within the test rig, making it difficult to meet the requirements of the GB50454 standard. Furthermore, the high airflow volume can cause airflow distortion at the propeller tip. Therefore, ground-based indoor test rigs for engines generally require airflow throttling and rectification functions within the test rig.

[0003] In existing technologies, the factory structure of ground indoor test rigs for aircraft turboprop engines generally adopts a fixed air guide ring. The fixed air guide ring integrates two functions: airflow rectification and airflow throttling. The air guide ring and the surrounding walls are solidified with cast concrete, and air can only flow in the middle ring. Because the minimum flow area of ​​air in the test chamber is greatly reduced, the flow area of ​​the secondary ejector air is limited, thereby reducing the airflow in the test chamber. While throttling the airflow, the airflow at the front end of the propeller is rectified by the shape of the air guide ring, improving the uniformity of airflow.

[0004] During testing, the turboprop engine's propeller needs to be positioned at the outlet of a fixed guide ring. However, fixed guide rings are typically made of reinforced concrete and cannot be moved. This means that some turboprop engines with different propeller axial positions cannot be tested because the propeller cannot be positioned in the constriction section of the guide ring. Fixed guide rings are only applicable to a certain type of turboprop engine, making them highly specialized and unable to test other types of turboprop engines, resulting in idle and wasteful work. Therefore, there is an urgent need for a test workshop that can test multiple types of turboprop engines. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the fixed guide ring in the prior art is immovable and can only be applied to a certain type of turboprop engine, and cannot be used to test other types of turboprop engines, resulting in idle waste, and thus provides a turboprop engine test workshop.

[0006] To address the above problems, the present invention provides a turboprop engine test workshop, comprising:

[0007] The factory building contains a platform on which a turboprop engine is placed, and a propeller is attached to one end of the turboprop engine.

[0008] A flow guiding device is installed inside the factory building. The flow guiding device is located at one end of the propeller. The flow guiding device includes a traveling mechanism and a flow guiding ring. The flow guiding ring is installed on the traveling mechanism. The propeller is installed inside the flow guiding ring and located at the outlet of the flow guiding ring. The bottom of the traveling mechanism is provided with rollers for moving the traveling mechanism.

[0009] Furthermore, the plant has a test workshop and an exhaust chamber. The test workshop is connected to the exhaust chamber through an exhaust cylinder. The flow guiding device, the test bench, and the turboprop engine are all located in the test workshop.

[0010] Furthermore, the turboprop engine is also equipped with a gas exhaust pipe, the air inlet of which is connected to the tail of the turboprop engine, and the air outlet of which is located outside the plant.

[0011] Furthermore, the flow guide ring is detachably mounted on the test stand.

[0012] Furthermore, the guide ring is a tapered air guide structure, with its inner diameter gradually decreasing from its inlet to its outlet.

[0013] Furthermore, the factory building is equipped with a floor rail that cooperates with the roller, and the floor rail is also equipped with a rail clamp for limiting movement.

[0014] Furthermore, the test bench is installed in the test workshop, and support frames are provided on both sides of the test bench. One end of the support frame is fixedly connected to the test bench, and the other end of the support frame is fixedly connected to the side wall of the test workshop. The test bench is fixedly installed in the test workshop through the support frames.

[0015] Furthermore, the gas exhaust pipe is fixedly connected to one end of the bracket, and the other end of the bracket is fixedly connected to the top of the factory building.

[0016] Furthermore, an air intake muffler is installed in the test workshop.

[0017] Furthermore, an exhaust muffler is installed inside the exhaust chamber.

[0018] The present invention has the following advantages:

[0019] 1. This invention provides a turboprop engine test workshop, comprising a workshop and a flow guiding device. A test bench is installed in the workshop, and a turboprop engine is placed on the test bench. A propeller is installed at one end of the turboprop engine. The flow guiding device is installed in the workshop, located at one end of the propeller. The flow guiding device includes a traveling mechanism and a flow guiding ring. The flow guiding ring is mounted on the traveling mechanism, and the propeller is mounted inside the flow guiding ring and located at the outlet of the flow guiding ring. Rollers for moving the traveling mechanism are provided at the bottom of the traveling mechanism.

[0020] This turboprop engine test bay features a guide ring mounted on a traveling mechanism with rollers at the bottom of the mechanism. This allows the guide ring to be moved, adjusting the distance between it and the turboprop engine. This enables different turboprop engine propellers to be placed at the outlet of the guide ring, facilitating testing of various turboprop engine models. Furthermore, this improves utilization and prevents idleness and waste.

[0021] 2. The turboprop engine test chamber of this structure is connected to the exhaust chamber through an exhaust cylinder. The exhaust cylinder can limit the airflow, thereby ensuring the stability and accuracy of the test.

[0022] 3. In this turboprop engine test workshop, the guide ring is detachably mounted on the test bench, allowing the guide ring to be replaced with one of different inner diameters according to the size of the propeller, thus enabling the guide ring to be used to test more types of turboprop engines.

[0023] 4. In this turboprop engine test workshop, the guide ring can be moved better by setting ground rails inside the plant. The rail clamps on the ground rails can effectively prevent the guide ring from moving during the test, further improving the accuracy and stability of the test.

[0024] 5. The turboprop engine test workshop with this structure can effectively reduce the noise generated during air intake and exhaust by installing intake and exhaust silencers, thereby reducing noise pollution. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the internal structure of the turboprop engine test workshop in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the ground compartment of an aircraft turboprop engine in the prior art.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Factory building; 2. Test bench; 3. Turboprop engine; 4. Propeller; 5. Traveling mechanism; 6. Guide ring; 7. Roller; 8. Gas exhaust pipe; 9. Test workshop; 10. Exhaust room; 11. Exhaust cylinder; 12. Intake muffler; 13. Exhaust muffler; 14. Support frame. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figure 1As shown, this invention discloses a turboprop engine test workshop, including a workshop 1 and a flow guiding device. A test bench 2 is installed inside the workshop 1, and a turboprop engine 3 is placed on the test bench 2. A propeller 4 is installed at one end of the turboprop engine 3. The flow guiding device is located inside the workshop 1, at one end of the propeller 4. The flow guiding device includes a traveling mechanism 5 and a flow guiding ring 6. The flow guiding ring 6 is mounted on the traveling mechanism 5, and the propeller 4 is located inside the flow guiding ring 6 and at its outlet. Rollers 7 for moving the traveling mechanism 5 are provided at the bottom of the traveling mechanism 5.

[0035] Specifically, the test stand 2 is fixedly installed inside the factory building 1. The turboprop engine 3 can be placed on the upper surface of the test stand 2 and fixed on the test stand 2. A propeller 4 is installed at the left end of the turboprop engine 3. A flow guide device is installed at the left end of the turboprop engine 3. A flow guide ring 6 is installed at the upper end of the traveling mechanism 5. The propeller 4 is installed in the through hole of the flow guide ring 6. The left end of the flow guide ring 6 is the inlet, and the right end of the flow guide ring 6 is the outlet. The propeller 4 is located at the outlet of the flow guide ring 6. Airflow can enter the flow guide ring 6 through the inlet and drive the propeller 4 to rotate. The flow guide ring 6 can rectify the airflow, improve the uniformity of the airflow, and ensure that the propeller 4 is subjected to uniform force. A roller 7 is also installed at the bottom of the traveling mechanism 5. The position of the flow guide ring 6 can be adjusted by the roller 7, so that the propeller 4 of different models of turboprop engines 3 can be placed at the outlet of the flow guide ring 6.

[0036] Furthermore, the plant 1 has a test workshop 9 and an exhaust chamber 10. The test workshop 9 is connected to the exhaust chamber 10 through an exhaust cylinder 11. The flow guide device, the test stand 2 and the turboprop engine 3 are all located in the test workshop 9.

[0037] Specifically, in Figure 1 In the diagram, the left side is the test chamber 9, and the right side is the exhaust chamber 10. The left end of the exhaust cylinder 11 is connected to the right side wall of the test chamber 9 and communicates with it. The right end of the exhaust cylinder 11 is connected to the left side wall of the exhaust chamber 10 and communicates with it. The diameter of the exhaust cylinder 11 is smaller than the height of the test chamber 9 and the exhaust chamber 10. The connection between the exhaust cylinder 11 and the test chamber 9 has an inverted conical structure, which facilitates the entry of airflow from the test chamber 9 into the exhaust cylinder 11. The left side of the test chamber 9 is the airflow inlet, and the right side of the exhaust chamber 10 is the airflow outlet. The airflow first enters the test chamber 9 and then enters the guide ring 6. The guide ring 6 rectifies the airflow and acts on the propeller 4, causing the propeller 4 to rotate. The remaining airflow flows to the right side of the test chamber 9 and enters the exhaust cylinder 11 through the inverted conical structure. The exhaust cylinder 11 can throttle the airflow. After being throttled by the exhaust cylinder 11, the airflow enters the exhaust chamber 10 and exits from the right side of the exhaust chamber 10.

[0038] Furthermore, the turboprop engine 3 is also equipped with a gas exhaust pipe 8. The air inlet of the gas exhaust pipe 8 is connected to the tail of the turboprop engine 3, and the air outlet of the gas exhaust pipe 8 is located outside the plant 1.

[0039] Specifically, the left end of the gas exhaust pipe 8 is the air inlet, and the right end is the air outlet. The right side of the turboprop engine 3 is connected to the left end of the gas exhaust pipe 8, and the right end of the gas exhaust pipe 8 is located outside the through exhaust cylinder 11 located outside the plant 1. The exhaust gas from the turboprop engine 3 enters the gas exhaust pipe 8 and is discharged outside the plant 1 through the gas exhaust pipe 8.

[0040] Furthermore, the flow guide ring 6 is detachably mounted on the stand 2.

[0041] Preferably, in this embodiment, the guide ring 6 can be detachably mounted on the test stand 2 by bolts, so that when the long end of the propeller 4 of the turboprop engine 3 is larger than the inner diameter of the guide ring 6, the guide ring 6 with a larger inner diameter can be replaced to adapt to the propeller 4 of the turboprop engine 3, so that the guide ring 6 can be tested with more models of turboprop engines 3.

[0042] Furthermore, the guide ring 6 is a tapered air guide structure, with its inner diameter gradually decreasing from its inlet to its outlet.

[0043] Furthermore, the factory 1 is equipped with a ground rail that cooperates with the roller 7, and a rail clamp for limiting movement is also installed on the ground rail.

[0044] Specifically, the ground rail is laid in the test workshop 9, the roller 7 can move along the guide direction of the ground rail, and a rail clamp is installed on the ground rail to limit the roller 7 and prevent the guide ring 6 from moving during the test.

[0045] Furthermore, the test stand 2 is set inside the test workshop 9. Support frames are provided on both sides of the test stand 2. One end of the support frame is fixedly connected to the test stand 2, and the other end of the support frame is fixedly connected to the side wall of the test workshop 9. The test stand 2 is fixedly set inside the test workshop 9 through the support frames.

[0046] Specifically, support frames are provided on the front and rear sides of the test bench 2. One end of the support frame is fixedly connected to the test bench 2, and the other end of the support frame is fixedly connected to the side wall of the test workshop 9. The support frame can fix the test bench 2 horizontally inside the test workshop 9, and the lower end surface of the test bench 2 is far away from the bottom surface of the test workshop 9.

[0047] Furthermore, the gas exhaust pipe 8 is fixedly connected to one end of the bracket 14, and the other end of the bracket 14 is fixedly connected to the top of the factory building 1.

[0048] Specifically, the bracket 14 is set at one end of the air inlet of the gas exhaust pipe 8, the lower end of the bracket 14 is fixedly connected to the gas exhaust pipe 8, and the upper end of the bracket 14 is fixedly connected to the inverted conical structure to fix the gas exhaust pipe 8.

[0049] Furthermore, an air intake muffler 12 is installed in the test workshop 9.

[0050] Furthermore, an exhaust muffler 13 is installed inside the exhaust chamber 10.

[0051] Specifically, the intake muffler 12 and the exhaust muffler 13 can reduce noise and silence the airflow entering the test chamber 9 and exiting the exhaust chamber 10, respectively, which can effectively reduce the noise generated during intake and exhaust and reduce noise pollution.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A turboprop engine test cell characterized in that, include: Factory building (1), a platform (2) is provided in the factory building (1), a turboprop engine (3) is placed on the platform (2), and a propeller (4) is provided at one end of the turboprop engine (3); A flow guiding device is installed inside the factory building (1). The flow guiding device is located at one end of the propeller (4). The flow guiding device includes a traveling mechanism (5) and a flow guiding ring (6). The flow guiding ring (6) is installed on the traveling mechanism (5). The propeller (4) is installed inside the flow guiding ring (6) and located at the outlet of the flow guiding ring (6). The bottom of the traveling mechanism (5) is provided with rollers (7) for moving the traveling mechanism (5).

2. The turboprop engine test workshop according to claim 1, characterized in that: The plant (1) has a test workshop (9) and an exhaust chamber (10). The test workshop (9) is connected to the exhaust chamber (10) through an exhaust cylinder (11). The flow guiding device, the test stand (2) and the turboprop engine (3) are all located in the test workshop (9).

3. The turboprop engine test workshop according to claim 1, characterized in that: The turboprop engine (3) is also provided with a gas exhaust pipe (8), the air inlet of the gas exhaust pipe (8) is connected to the tail of the turboprop engine (3), and the air outlet of the gas exhaust pipe (8) is located outside the factory building (1).

4. The turboprop engine test workshop according to any one of claims 1 to 3, characterized in that: The flow guide ring (6) is detachably mounted on the stand (2).

5. The turboprop engine test workshop according to claim 4, characterized in that: The guide ring (6) is a tapered guide structure, with its inner diameter gradually decreasing from its inlet to its outlet.

6. The turboprop engine test workshop according to claim 1, characterized in that: The factory building (1) is equipped with a ground rail that cooperates with the roller (7), and a rail clamp for limiting the position is also provided on the ground rail.

7. The turboprop engine test workshop according to claim 2, characterized in that: The test stand (2) is set in the test workshop (9). Support frames are provided on both sides of the test stand (2). One end of the support frame is fixedly connected to the test stand (2), and the other end of the support frame is fixedly connected to the side wall of the test workshop (9). The test stand (2) is fixedly set in the test workshop (9) through the support frames.

8. The turboprop engine test workshop according to claim 3, characterized in that: The gas exhaust pipe (8) is fixedly connected to one end of the bracket (14), and the other end of the bracket (14) is fixedly connected to the top of the factory building (1).

9. The turboprop engine test workshop according to claim 2, characterized in that: An air intake silencer (12) is installed in the test workshop (9).

10. The turboprop engine test workshop according to claim 2, characterized in that: An exhaust muffler (13) is installed in the exhaust chamber (10).

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