An exit rotation test system for a distortion simulator

Abstract

The application discloses a distortion simulator outlet rotation test system, which comprises a rotating section assembly and a driving system, wherein the rotating section assembly comprises a harrow seat mounting cylinder and a bearing, and the bearing is fixed on the harrow seat mounting cylinder through a bearing mounting frame; the driving system comprises a linear module, a driving plate, a pull rod and a motor, one end of the driving plate is connected with the pull rod through a first pin shaft, the other end of the driving plate is connected with a slider of the linear module through a bolt, one end of the pull rod away from the driving plate is connected with a connecting piece fixedly arranged on the harrow seat mounting cylinder through a second pin shaft, and the motor drives the linear module to convert the linear motion of the slider into the circumferential motion of the harrow seat mounting cylinder, so that the rotation measurement is realized. The distortion simulator outlet rotation test system can convert the linear motion of the slider of the linear module into the circumferential motion of the harrow seat mounting cylinder to realize the rotation measurement, and can accurately measure the outlet flow field of the pressure distortion simulator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine pressure distortion test, and particularly relates to a distortion simulator outlet rotating test system. BACKGROUND

[0002] Stability is one of the important indexes of an aero turbine engine, and the external stability-reducing factor that most influences the engine stability is pressure distortion. At present, a pressure distortion simulation device is widely used to provide a pressure distortion flow field for the engine. The most commonly used method is to install a plug-in plate simulation device upstream of the engine. Air flow passes through the plug-in plate to form a low pressure area, and the edge of the plug-in plate forms a turbulent flow, so as to generate a circumferential total pressure distortion and a turbulent intensity at the engine inlet, so as to simulate the flow field characteristics at the outlet of an inlet duct in a certain state, and to perform an engine anti-inlet distortion test. However, due to size limitations, 6-8 pressure measurement rakes are currently used to measure the distortion flow field, and 5-6 pressure measuring points are distributed on each measurement rake. Since the position of the measurement rake is fixed, the flow field information is generally obtained by interpolation, and the distribution of the steady-state and dynamic distortion flow field at the outlet of the pressure distortion simulator cannot be accurately measured. There are many factors that affect the stability of the compressor, and the most important one is the distortion caused by the non-uniform flow field at the inlet of the compressor. The uniform flow condition at the inlet of the engine is expected in the design, however, due to the shape and geometry of the inlet duct, the working state, and whether the inlet duct and the engine are matched, the air flow will inevitably be non-uniform, and there will be distortion at the outlet of the inlet duct. At present, the measurement of pressure distortion is a fixed measurement method, which is directly measured in the pipeline, and the flow field cannot be measured to a large extent. SUMMARY

[0003] The present application aims to at least partly solve one of the problems in the related art.

[0004] To this end, an embodiment of the present application provides a distortion simulator outlet rotating test system.

[0005] The present application provides a distortion simulator outlet rotating test system, which comprises:

[0006] A rotating section assembly, the rotating section assembly comprises a rake seat mounting cylinder and a bearing, the bearing is fixed on the rake seat mounting cylinder through a bearing mounting frame, a loose ring of the bearing is mounted in a flange arranged on both sides of the bearing, and a tight ring of the bearing is mounted in a shaft sleeve;

[0007] The driving system comprises a linear module, a driving plate, a pull rod and a motor, one end of the driving plate is connected with the pull rod through a first pin shaft, the other end of the driving plate is connected with a slider of the linear module through a bolt, the end of the pull rod away from the driving plate is connected with a connecting piece fixedly arranged on the harrow seat mounting cylinder through a second pin shaft, the motor drives the linear module, thereby driving the pull rod, so that linear motion of the slider is converted into circumferential motion of the harrow seat mounting cylinder to realize rotation measurement.

[0008] In some embodiments, the flanges on both sides of the bearing are a rotating section flange and a live sleeve flange, respectively, and the rotating section flange and the live sleeve flange are fixedly connected through bolts.

[0009] In some embodiments, a plurality of bearing baffle plates are arranged close to the bearing on both axial sides of the bearing and are uniformly distributed in a circle, and the bearing baffle plates are fixedly connected with the bearing mounting frame.

[0010] In some embodiments, a sealing ring is arranged in the gap between the rotating section flange, the bearing mounting frame and the bearing baffle plate.

[0011] In some embodiments, the sealing ring is a rotating shaft lip-shaped sealing ring.

[0012] In some embodiments, the bearing is an angular contact ball bearing.

[0013] In some embodiments, the linear module further comprises a moving guide rail, and the slider and the moving guide rail are connected through a slide rod.

[0014] In some embodiments, the moving guide rail is connected with the motor through a shaft coupling.

[0015] In some embodiments, the motor is mounted on a motor mounting plate.

[0016] In some embodiments, the driving system further comprises a control system for controlling the rotation speed and start-stop of the motor.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The distortion simulator outlet rotation test system of the present application can greatly measure the flow field by converting the linear motion of the slider of the linear module into the circumferential motion of the harrow seat mounting cylinder to realize rotation measurement.

[0019] The distortion simulator outlet rotation test system of the present application is provided with bearings on both sides of the harrow seat mounting cylinder, and the rolling bearing rotation can reduce the friction generated when the harrow seat mounting cylinder rotates. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of which:

[0021] Fig. 1 Fig. 1 is a schematic view of an outlet rotary test system of a distortion simulator according to the present application;

[0022] Fig. 2 Fig. 2 is a schematic view of a rotary segment assembly according to the present application;

[0023] Legend of reference signs:

[0024] Rotary segment flange 1, sealing ring 2, bearing baffle 3, bearing 4, looped flange 5, bearing mounting bracket 6, harrow seat mounting cylinder 7, first pin shaft 8, pull rod 9, driving plate 10, sliding block 11, moving guide rail 12, shaft coupling 13, motor mounting plate 14, motor 15, second pin shaft 16, connecting piece 17. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or like reference numerals represent the same or like elements throughout. The embodiments described below are examples intended to explain the present application, and should not be understood as limiting the present application.

[0026] A distortion simulator outlet rotary test system according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0027] As shown in Figs. 1-2 , the distortion simulator outlet rotary test system according to the present application includes a rotary segment assembly and a driving system.

[0028] The rotary segment assembly includes a harrow seat mounting cylinder 7 and a bearing baffle 3, and a bearing 4 is fixed to the harrow seat mounting cylinder 7 through a bearing mounting bracket 6.

[0029] Specifically, the bearing mounting bracket 6 is fixedly arranged on the harrow seat mounting cylinder 7, and the bearing 4 is fixed to the bearing mounting bracket 6, so as to connect the bearing 4 and the harrow seat mounting cylinder 7, and when the harrow seat mounting cylinder 7 rotates, the bearing 4 rotates correspondingly. Bearings 4 are arranged on both sides of the harrow seat mounting cylinder 7, and the rolling bearings 4 reduce the friction generated when the harrow seat mounting cylinder 7 rotates.

[0030] The loose ring of the bearing 4 is arranged in the flange arranged on both sides of the bearing 4, and the tight ring of the bearing 4 is arranged in the shaft sleeve.

[0031] Specifically, the bearing 4 has a loose ring and a tight ring, the tight ring is installed on the end face of the movable part, and the loose ring is installed on the end face of the stationary part. In the present application, the loose ring of the bearing 4 is installed in the flanges on both sides of the bearing 4, and the tight ring of the bearing 4 is installed in the shaft sleeve. In the case of bearing 4 damage, it can be conveniently installed and removed.

[0032] The flanges on both sides of the bearing 4 cooperate to achieve clamping and fixing of the bearing 4.

[0033] In some embodiments, the flanges on both sides of the bearing 4 are respectively rotating segment flange 1 and live loop flange 5, and the rotating segment flange 1 and the live loop flange 5 are fixedly connected by bolts.

[0034] Specifically, the rotating segment flange 1 and the loose ring of the bearing 4 are connected by bolts, the live loop flange 5 and the loose ring of the bearing 4 are connected by bolts, and the rotating segment flange 1 and the live loop flange 5 are connected by bolts, so as to clamp and fix the bearing 4. When the bearing 4 rotates, the live loop flange 5 remains stationary with the rotating segment flange 1.

[0035] A plurality of bearing baffle plates 3 are arranged on both sides of the bearing 4 in the axial direction, and the bearing baffle plates 3 are uniformly distributed along the circumference and are fixedly connected with the bearing mounting frame 6.

[0036] In order to position the bearing 4 and limit the movement of the bearing 4 in the axial direction, the bearing baffle plates 3 are arranged on both sides of the bearing 4 in the axial direction. The bearing baffle plates 3 are arranged close to the bearing 4, and the bearing baffle plates 3 are fixedly connected with the bearing mounting frame 6. In some embodiments, the bearing baffle plates 3 and the bearing mounting frame 6 are fixedly connected by bolts.

[0037] It can be understood that a plurality of bearing baffle plates 3 can be arranged, and the plurality of bearing baffle plates 3 are uniformly distributed along the circumference on both sides of the bearing 4.

[0038] Preferably, the bearing baffle plate 3 is arc-shaped.

[0039] A sealing ring 2 is arranged in the gap between the rotating segment flange 1, the bearing mounting frame 6 and the bearing baffle plate 3. That is, the sealing ring 2 is arranged in the gap of the bearing baffle plate 3, the bearing mounting frame 6 and the rotating segment flange 1, and plays a sealing role.

[0040] In some embodiments, the sealing ring 2 is a rotating shaft lip-shaped sealing ring, which is accurate in positioning, high in coaxiality and convenient to install.

[0041] In some embodiments, the bearing 4 is an angular contact ball bearing.

[0042] The driving system includes a linear module, a driving plate 10, a pull rod 9, a motor 15 and a control system. The linear module includes a sliding block 11 and a moving guide rail 12.

[0043] One end of the driving plate 10 is connected with the pull rod 9 through the first pin shaft 8, and the other end of the driving plate 10 is connected with the slider 11 of the linear module through a bolt.

[0044] Specifically, the driving plate 10 is used for connecting the linear module with the pull rod 9, one end of the driving plate 10 is connected with the pull rod 9 through the first pin shaft 8, so that one end of the driving plate 10 is connected with the pull rod 9, and the other end of the driving plate 10 is fixedly connected with the slider 11 of the linear module, so that the other end of the driving plate 10 is connected with the slider 11, when the slider 11 moves, the driving plate 10 moves with the slider 11, and the movement of the driving plate 10 drives the pull rod 9 to move, so that the pull rod 9 is connected with the linear module.

[0045] In some embodiments, the other end of the driving plate 10 is fixedly connected with the slider 11 of the linear module through a bolt.

[0046] The other end of the pull rod 9 away from the driving plate 10 is connected with the connecting piece 17 fixedly arranged on the harrow seat mounting cylinder 7 through the second pin shaft 16.

[0047] Specifically, the two ends of the pull rod 9 are connected with the driving plate 10 and the connecting piece 17 through pin shafts respectively, the connecting piece 17 is fixedly arranged on the harrow seat mounting cylinder 7, and when the pull rod 9 moves, the harrow seat mounting cylinder 7 rotates due to that the pull rod 9 is connected with the connecting piece 17 through the second pin shaft 16.

[0048] The slider 11 of the linear module is connected with the moving guide rail 12 through a slide rod, and the slide rod is fixedly arranged on the moving guide rail.

[0049] Specifically, a through hole through which the slide rod passes is arranged on the slider 11, so that the slider 11 can slide on the moving guide rail 12 through the slide rod.

[0050] The motor 15 drives the linear module to drive the pull rod 9 to convert the linear motion of the slider 11 into the circumferential motion of the harrow seat mounting cylinder 7, so as to realize rotation measurement.

[0051] The motor 15 is used for driving the linear module to drive the slider 11 to move on the moving guide rail 12, specifically, the moving guide rail 12 is connected with the motor 15 through the coupling 13, the motor 15 is installed on the motor mounting plate 14, and the motor 15 drives the linear module through the coupling 13.

[0052] In some embodiments, the motor 15 has a self-locking function.

[0053] The control system is used for controlling the rotation speed and start-stop of the motor 15.

[0054] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms can be directed to different embodiments or examples. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0055] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0056] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A distortion simulator exit rotation test system, characterized in that, include: A rotating section assembly, comprising a rake seat mounting cylinder and a bearing, wherein the bearing is fixed on the rake seat mounting cylinder by a bearing mounting bracket, the loose ring of the bearing is installed in flanges provided on both sides of the bearing, and the tight ring of the bearing is installed in a bushing. The drive system includes a linear module, a drive plate, a pull rod, and a motor. One end of the drive plate is connected to the pull rod via a first pin, and the other end of the drive plate is connected to the slider of the linear module via bolts. The end of the pull rod away from the drive plate is connected to a connector fixed on the rake mounting cylinder via a second pin. The motor drives the linear module, which in turn drives the pull rod, to convert the linear motion of the slider into the circular motion of the rake mounting cylinder to achieve rotation measurement.

2. The system as described in claim 1, characterized in that, The flanges on both sides of the bearing are a rotating flange and a loose flange, respectively, and the rotating flange and the loose flange are fixedly connected by bolts.

3. The system as described in claim 2, characterized in that, Multiple bearing baffles are provided on both sides of the bearing along the axial direction, and the bearing baffles are fixedly connected to the bearing mounting bracket.

4. The system as described in claim 3, characterized in that, A sealing ring is installed in the gap between the rotating section flange, the bearing mounting bracket, and the bearing baffle.

5. The system as described in claim 4, characterized in that, The sealing ring is a rotary shaft lip seal.

6. The system as described in claim 1, characterized in that, The bearing is an angular contact ball bearing.

7. The system as described in claim 1, characterized in that, The linear module also includes a movable guide rail, and the slider is connected to the movable guide rail via a slide rod.

8. The system as described in claim 7, characterized in that, The moving guide rail is connected to the motor via a coupling.

9. The system as described in claim 1, characterized in that, The motor is mounted on a motor mounting plate.

10. The system as claimed in claim 1, characterized in that, The drive system also includes a control system, which is used to control the speed and start / stop of the motor.

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