High-pressure turbine blade disc vibration test tool

Abstract

The utility model relates to the technical field of engine turbine bladed disc testing, in particular to a high-pressure turbine bladed disc vibration testing tool which comprises a vibration table, a protection box, a box door, a sealing gasket, a supporting frame, a rotating piece, a nozzle and a transmission piece. A box door is movably arranged in the open groove, the sealing gasket is arranged outside the box door and located between the open groove and the box door, the supporting frame is arranged in the protection box, the rotating piece is used for rotating the nozzle, the nozzle is located above the vibration table, and the conveying piece is used for conveying cold air or hot air into the nozzle and finally spraying the cold air or the hot air out of the nozzle. According to the blade vibration fatigue test device, cold air or hot air in the nozzle can be sprayed to different positions of the turbine blade disc, so that temperature rise or temperature reduction treatment of different positions of the turbine blade disc is realized, the influence of a temperature environment on the vibration fatigue limit of blades of the turbine blade disc is avoided, and the test accuracy of the blade vibration fatigue test is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of engine turbine disk testing, in particular to a vibration testing tooling for a high-pressure turbine disk. Background Art

[0002] Turbine blades are key components to achieve the core functions of aero-engines. During the operation of aero-engines, various failures often occur due to the failure of the blades on the disk, and even the consequences of plane crashes and fatalities may occur. Therefore, before the turbine disk is installed in the engine, a testing tooling needs to be used to conduct vibration fatigue tests on the blades on the disk.

[0003] When the existing testing tooling tests the blades, it usually cuts the blades one by one and then conducts vibration tests. This method not only has a long processing cycle and high requirements for vibration tooling fixtures, but also the stressed states of the cut blades and the disk as a whole are different, resulting in deviations in the test results.

[0004] The prior art CN207263410U discloses a vibration testing system for aero-engine impeller disks. By jointly testing the disk and the blades, it is not necessary to cut the blades one by one and then conduct vibration tests. Furthermore, while well simulating the actual working state of the impeller disk, it can accurately test the fatigue performance of the impeller disk as a whole and each blade.

[0005] However, the above-mentioned testing tooling does not have a temperature adjustment mechanism, resulting in the blades being able to conduct vibration tests only in the same temperature environment. When aero-generators are actually used, they may be in extremely high or low temperature environments, and extremely high or low temperature environments may affect the vibration fatigue limit of the blades, thereby reducing the test accuracy of the vibration fatigue tests of the blades. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a vibration testing tooling for a high-pressure turbine disk, aiming to solve the technical problem that the existing testing tooling does not have a temperature adjustment mechanism, resulting in the blades being able to conduct vibration tests only in the same temperature environment. When aero-generators are actually used, they may be in extremely high or low temperature environments, and extremely high or low temperature environments may affect the vibration fatigue limit of the blades, thereby reducing the test accuracy of the vibration fatigue tests of the blades.

[0007] To achieve the above object, the utility model provides a vibration test tooling for a high-pressure turbine disk, which includes a vibration table, and also includes a protective box, a box door, a sealing gasket, a support frame, a rotating member, a nozzle and a transmission member. The protective box is arranged outside the vibration table and completely covers the vibration table. A slot is arranged on the outer side of the protective box, and the box door is movably arranged in the slot. The sealing gasket is arranged outside the box door and is located between the slot and the box door. The support frame is arranged inside the protective box. The rotating member is used to rotate the nozzle. The nozzle is located above the vibration table. The transmission member is used to transmit cold air or hot air into the nozzle and finally spray out from the nozzle.

[0008] Among them, the rotating member includes a rotating motor and a rotating block. The rotating motor is arranged outside the support frame. The output shaft of the rotating motor penetrates through the support frame. The rotating block is fixedly connected to the nozzle and is fixedly arranged outside the output shaft of the rotating motor and is located inside the support frame.

[0009] Among them, the transmission member includes a connecting hose, a suction pump and an air storage chamber. The connecting hose is communicated with the nozzle and penetrates through the protective box. The suction pump is arranged on the side of the connecting hose away from the nozzle. The air storage chamber is communicated with the suction pump and is arranged on the upper surface of the protective box.

[0010] Among them, the transmission member also includes a temperature sensor and a control module. The temperature sensor is arranged inside the protective box. The control module is respectively connected to the temperature sensor and the suction pump and is arranged inside the protective box.

[0011] Among them, the vibration test tooling for the high-pressure turbine disk also includes a hydraulic telescopic rod and a clamping piece. The hydraulic telescopic rod is arranged on the vibration table. The clamping piece is connected to the output end of the hydraulic telescopic rod and is located on the side of the hydraulic telescopic rod close to the nozzle.

[0012] A vibration test tooling for a high-pressure turbine disk of the present utility model can completely seal the vibration table by arranging the protective box and the box door outside the vibration table and arranging the gasket between the protective box and the box door. Then, the hydraulic telescopic rod is used to drive the clamping piece to move, so that the two clamping pieces can move relatively or away from each other on the vibration table, and further the turbine disk can be clamped and fixed between the two clamping pieces, facilitating the vibration test of the turbine disk. During the vibration test, cold air or hot air is transmitted to the nozzle and ejected from the nozzle, so that the cold air or hot air can heat or cool the turbine disk. By driving the nozzle to rotate, the cold air or hot air in the nozzle can be ejected to different positions of the turbine disk, realizing the heating or cooling treatment of different positions of the turbine disk. Further, during the fatigue test of the turbine disk, a low-temperature or high-temperature environment can be provided for the turbine disk to avoid the situation that the extremely high temperature or extremely low temperature environment affects the vibration fatigue limit of the blades of the turbine disk, ensuring the test accuracy of the vibration fatigue test of the blades of the turbine disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0014] Figure 1 FIG. is a schematic structural diagram of the overall vibration test tooling for a high-pressure turbine disk according to the first embodiment of the present utility model.

[0015] Figure 2 FIG. is a schematic sectional view of the vibration test tooling for a high-pressure turbine disk according to the first embodiment of the present utility model along the hydraulic telescopic rod.

[0016] Figure 3 FIG. is a schematic sectional view of the vibration test tooling for a high-pressure turbine disk according to the first embodiment of the present utility model along the vibration table.

[0017] Figure 4 FIG. is a schematic sectional view of the vibration test tooling for a high-pressure turbine disk according to the first embodiment of the present utility model along the rotating motor.

[0018] In the figure: 101 - vibration table, 102 - protective box, 103 - box door, 104 - gasket, 105 - support frame, 106 - nozzle, 107 - hydraulic telescopic rod, 108 - clamping piece, 109 - rotating motor, 110 - rotating block, 111 - connecting hose, 112 - suction pump, 113 - air storage chamber, 114 - temperature sensor, 115 - control module, 116 - turbine disk. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0020] First Embodiment

[0021] Please refer to Figures 1 to 4 , Figure 1 , which is a schematic structural diagram of the overall vibration test tooling for the high-pressure turbine disk 116 according to the first embodiment of the present utility model. Figure 2 , which is a sectional view of the vibration test tooling for the high-pressure turbine disk 116 according to the first embodiment of the present utility model along the hydraulic telescopic rod 107. Figure 3 , which is a sectional view of the vibration test tooling for the high-pressure turbine disk 116 according to the first embodiment of the present utility model along the vibration table 101. Figure 4 , which is a sectional view of the vibration test tooling for the high-pressure turbine disk 116 according to the first embodiment of the present utility model along the rotating motor 109.

[0022] The present utility model provides a vibration test tooling for a high-pressure turbine disk 116, which includes a vibration table 101, a protective box 102, a box door 103, a sealing gasket 104, a support frame 105, a rotating member, a nozzle 106, a transmission member, a hydraulic telescopic rod 107, and a clamping piece 108. The rotating member includes a rotating motor 109 and a rotating block 110. The transmission member includes a connecting hose 111, a suction pump 112, a gas storage chamber 113, a temperature sensor 114, and a control module 115. By the foregoing solution, the problem that the existing test tooling does not have a temperature adjustment mechanism, resulting in the blades being able to perform vibration tests only in the same temperature environment, while the aviation generator may be in an extremely high temperature or extremely low temperature environment during actual use, and the extremely high temperature or extremely low temperature environment may affect the vibration fatigue limit of the blades, thereby reducing the test accuracy of the vibration fatigue test of the blades is solved. It can be understood that the foregoing solution can be used in the scenario of performing vibration fatigue tests on the blades on the turbine disk 116 before the production and assembly of the aeroengine.

[0023] In this embodiment, by arranging the protective box 102 and the box door 103 outside the vibration table 101 and arranging the gasket 104 between the protective box 102 and the box door 103, the vibration table 101 can be completely sealed. Then, by driving the clamping piece 108 to move through the hydraulic telescopic rod 107, the two clamping pieces 108 can move relatively or away from each other on the vibration table 101, and then the turbine disk 116 can be clamped and fixed between the two clamping pieces 108, so as to facilitate the vibration test of the turbine disk 116. During the vibration test, cold air or hot air is transmitted to the nozzle 106 and ejected from the nozzle 106, so that the cold air or hot air can heat or cool the turbine disk 116. By driving the nozzle 106 to rotate, the cold air or hot air in the nozzle 106 can be ejected to different positions of the turbine disk 116, realizing the heating or cooling treatment of different positions of the turbine disk 116. Furthermore, during the fatigue test of the turbine disk 116, a low-temperature or high-temperature environment can be provided for the turbine disk 116 to avoid the situation that an extremely high-temperature or extremely low-temperature environment affects the vibration fatigue limit of the blades of the turbine disk 116, ensuring the test accuracy of the vibration fatigue test of the blades of the turbine disk 116.

[0024] Among them, the protective box 102 is arranged outside the vibration table 101 and completely covers the vibration table 101. There is a slot on the outer side of the protective box 102, and the box door 103 is movably arranged in the slot. The gasket 104 is arranged outside the box door 103 and is located between the slot and the box door 103. The support frame 105 is arranged inside the protective box 102. The rotating part is used to rotate the nozzle 106. The nozzle 106 is located above the vibration table 101. The transmission part is used to transmit cold air or hot air into the nozzle 106 and finally eject it from the nozzle 106. The protective box 102 and the box door 103 are connected by hinges, so that the box door 103 can rotate outside the protective box 102, and then the box door 103 can open or close the slot. The gasket 104 is made of flexible soft material, and the gasket 104 can seal the gap between the slot and the box door 103 to prevent the cold air or hot air inside the protective box 102 from flowing out.

[0025] Secondly, the rotation motor 109 is arranged outside the support frame 105. The output shaft of the rotation motor 109 penetrates through the support frame 105. The rotation block 110 is fixedly connected to the nozzle 106 and is fixedly arranged outside the output shaft of the rotation motor 109 and inside the support frame 105. The support frame 105 has a through groove, and the rotation block 110 is located in the through groove. The output shaft of the rotation motor 109 is connected to the rotation block 110 and drives the rotation block 110 to rotate along the axis of the output shaft of the rotation motor 109 in the through groove, so as to drive the nozzle 106 to rotate along the axis of the output shaft of the rotation motor 109.

[0026] Thirdly, the connecting hose 111 is communicated with the nozzle 106 and penetrates through the protection box 102. The suction pump 112 is arranged on one side of the connecting hose 111 away from the nozzle 106. The air storage chamber 113 is communicated with the suction pump 112 and is arranged on the upper surface of the protection box 102. The connecting hose 111 can be elongated or shortened, so as not to affect the rotation of the nozzle 106. The air storage chamber 113 is communicated with an external air source supply box, so that cold air or hot air in the external air source supply box can be transmitted into the air storage chamber 113. The nozzle 106, the connecting hose 111, the suction pump 112 and the air storage chamber 113 are communicated in sequence. When the suction pump 112 is started, the suction generated at the output end of the suction pump 112 can transmit the cold air or hot air in the air storage chamber 113 to the nozzle 106 through the suction pump 112 and the connecting hose 111 and finally spray out from the nozzle 106.

[0027] Meanwhile, the temperature sensor 114 is arranged in the protection box 102. The control module 115 is respectively connected to the temperature sensor 114 and the suction pump 112 and is arranged in the protection box 102. The temperature sensor 114, the control module 115 and the suction pump 112 are connected in sequence, so that the temperature sensor 114 can detect the temperature in the protection box 102 in real time and transmit the detection result to the control module 115, so that the control module 115 can generate corresponding control instructions according to the detection result to control the running state of the suction pump 112.

[0028] Finally, the hydraulic telescopic rod 107 is arranged on the vibration table 101. The clamping piece 108 is connected to the output end of the hydraulic telescopic rod 107 and is located on the side of the hydraulic telescopic rod 107 close to the nozzle 106. The hydraulic telescopic rod 107 and the clamping piece 108 are arranged on both the left and right sides of the vibration table 101. The output end of the hydraulic telescopic rod 107 is connected to the clamping piece 108 and drives the clamping piece 108 to move horizontally above the vibration table 101, so that the two clamping pieces 108 above the vibration table 101 can move relatively or away from each other, and further clamp and fix the turbine disk 116 between the two clamping pieces 108.

[0029] When using the present utility model, rotate the box door 103 in the slot of the protective box 102, so that the box door 103 can open the slot. After that, place the turbine disk 116 on the vibration table 101, and then rotate the box door 103 in the slot of the protective box 102, so that the box door 103 can close the slot. At this time, the gasket 104 can seal the gap between the slot and the box door 103 to prevent the cold air or hot air in the protective box 102 from flowing out.

[0030] Then, start the hydraulic telescopic rod 107, so that the power output by the output end of the hydraulic telescopic rod 107 drives the clamping piece 108 to move horizontally above the vibration table 101, so that the two clamping pieces 108 above the vibration table 101 can move relatively or away from each other, and further clamp and fix the turbine disk 116 between the two clamping pieces 108. After the turbine disk 116 is clamped and fixed, vibrate the vibration table 101 to drive the turbine disk 116 on the vibration table 101 to vibrate, realizing the vibration test of the turbine disk 116.

[0031] During the vibration test of the turbine disk 116, when it is necessary to adjust the ambient temperature of the turbine disk 116, the gas storage chamber 113 is communicated with the external gas supply tank, so that the cold air or hot air in the external gas supply tank can be transmitted into the gas storage chamber 113. After that, the suction pump 112 is started, so that the suction generated at the output end of the suction pump 112 can transmit the cold air or hot air in the gas storage chamber 113 to the nozzle 106 through the suction pump 112 and the connecting hose 111, and finally spray out from the nozzle 106, so that the cold air or hot air can heat or cool the turbine disk 116. Then, the rotation motor 109 is started, so that the power output from the output end of the rotation motor 109 drives the rotation block 110 to rotate along the axis of the output shaft of the rotation motor 109 in the through groove, so as to drive the nozzle 106 to rotate along the axis of the output shaft of the rotation motor 109, and further make the cold air or hot air in the nozzle 106 spray to different positions of the turbine disk 116, realizing the heating or cooling treatment of different positions of the turbine disk 116.

[0032] While spraying cold air or hot air to the turbine disk 116, the temperature in the protection box 102 is detected in real time by the temperature sensor 114, and the detection result is transmitted to the control module 115, so that the control module 115 can generate corresponding control instructions according to the detection result to control the operating state of the suction pump 112, realizing the automatic control of the ambient temperature of the turbine disk 116.

[0033] The above-disclosed is only a preferred embodiment of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A high-pressure turbine blade vibration test tool, comprising a vibration table, characterized in that: It also includes a protective box, a box door, a sealing gasket, a support frame, a rotating member, a nozzle and a transmission member. The protective box is arranged outside the vibration table and completely covers the vibration table. The outer side of the protective box is provided with a groove, and the box door is movably arranged in the groove. The sealing gasket is arranged outside the box door and is located between the groove and the box door. The support frame is arranged in the protective box. The rotating member is used to rotate the nozzle, and the nozzle is located above the vibration table. The transmission member is used to transmit cold air or hot air into the nozzle and finally spray it out from the nozzle.

2. The high-pressure turbine blade vibration test tool as claimed in claim 1, characterized in that: The rotating member includes a rotating motor and a rotating block. The rotating motor is arranged outside the support frame. The output shaft of the rotating motor passes through the support frame. The rotating block is fixedly connected to the nozzle and is fixedly arranged outside the output shaft of the rotating motor and located inside the support frame.

3. The high-pressure turbine blade disk vibration test tool as claimed in claim 1, characterized in that: The transmission component includes a connecting hose, a suction pump and an air storage chamber. The connecting hose is connected to the nozzle and passes through the protective box. The suction pump is arranged on a side of the connecting hose away from the nozzle. The air storage chamber is connected to the suction pump and is arranged on the upper surface of the protective box.

4. The high-pressure turbine blade vibration test tool as claimed in claim 3, characterized in that: The transmission member further includes a temperature sensor and a control module. The temperature sensor is disposed in the protection box. The control module is respectively connected to the temperature sensor and the suction pump and is disposed in the protection box.

5. The high-pressure turbine blade disk vibration test tool as claimed in claim 1, characterized in that: The high-pressure turbine blade disk vibration test tool also includes a hydraulic telescopic rod and a clamping plate. The hydraulic telescopic rod is arranged on the vibration table. The clamping plate is connected to the output end of the hydraulic telescopic rod and is located on a side of the hydraulic telescopic rod close to the nozzle.

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