CN217032951U - High-speed rotation vibration tester - Google Patents
High-speed rotation vibration tester Download PDFInfo
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- CN217032951U CN217032951U CN202122232867.8U CN202122232867U CN217032951U CN 217032951 U CN217032951 U CN 217032951U CN 202122232867 U CN202122232867 U CN 202122232867U CN 217032951 U CN217032951 U CN 217032951U
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Abstract
The utility model relates to a high-speed rotation vibration tester, which comprises a simulation rotating platform assembly and a rotor assembly, wherein a driving motor is arranged in the simulation rotating platform assembly, a rotor assembly mounting panel is arranged on the front side of the simulation rotating platform assembly, the shaft end of the driving motor is connected with a driving shaft through a coupler, a plurality of mounting holes are formed in the rotor assembly mounting panel, U-shaped probe mounting brackets are arranged on the plurality of mounting holes at intervals, probe support rings are arranged between the upper sides of the probe mounting brackets, sliding ring mounting holes are formed in the probe support rings so as to facilitate mounting of sliding rings, and a rotating speed synchronous sensor mounting hole is formed in the upper side of each sliding ring. The simulation platform can rotate at a high speed, so that the rotating speed required by the resonance of the blades can be achieved, stable and controllable vibration signals can be generated, various types of sensor probe mounting supports can be provided, optical or electric sensors can be supported, and the mounting angle and position of the probe can be adjusted according to requirements.
Description
Technical Field
The utility model relates to the technical field of rotating machinery, in particular to a high-speed rotating vibration tester.
Background
The aircraft engine works under the working condition of high temperature/high pressure/high rotating speed for a long time, particularly under the action of various cyclic alternating loads such as centrifugal force, aerodynamic force and the like, the blade generates forced vibration (such as resonance and surge), and under the coupling action of aerodynamic damping and structural damping, dangerous working conditions can cause the mechanical instability phenomenon of the rotor blade to generate self-excited vibration (such as flutter). As the rotor blade is a key part of the engine, in order to meet the strength storage requirement, corresponding vibration stress levels are required to be obtained under different working conditions so as to comprehensively evaluate the high/low cycle fatigue damage of the blade and ensure a proper margin to verify that the vibration stress is lower than the endurance limit. Meanwhile, monitoring the dynamic stress of the blade to obtain load spectrum information is also an important premise for health management of the blade. In order to obtain the vibration stress level of the rotor blade, the traditional means is to obtain the vibration stress level through a strain electric measurement mode, and a rotor signal transmission mode is mainly to transmit the vibration stress level to a ground dynamic data acquisition system through a slip ring electricity leading device or a telemetering device. The modification requirement of the rotor piece is high, the testing cost is high, the period is long, and once the engine is tested, the lead of the strain gauge inside the engine is lost and difficult to repair. At present, the research of a non-contact blade vibration testing technology based on a blade end timing principle is carried out at home and abroad, and the non-contact blade vibration testing technology is gradually put into research and development of the engine and gas turbine industries for use. Relevant researches at foreign countries show that the reconstruction of the dynamic strain field by adopting the blade tip timing principle has certain feasibility, and no mature engineering application case exists at home. Subjects such as verification of sensitivity of circumferential angle of sensor to order identification, verification of influence of radial distance of sensor on measurement accuracy, verification of dynamic strain reconstruction method and the like still do not have conditions for realization, so that a simulation rotating platform and a verification scheme need to be designed for the verification subjects
1. Developing functions of Blade Tip Timing (BTT) software/hardware, and acquiring experience; a rotary table similar to the actual working environment is required to provide a controllable, stable vibration signal.
2. The blade vibrates when rotating at a high speed, and in order to study the vibration of the blade at different rotating speeds, a high-speed simulation rotating platform is needed to simulate the working environment of the high-speed rotation of the blade.
3. Mutual verification of a strain electric measurement system and a blade tip timing system (BTT) requires a stable and controllable test platform.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a high-speed rotation vibration tester which is reasonable in structure, a simulation table can rotate at a high speed, the rotating speed required by the blade to generate resonance can be achieved, stable and controllable vibration signals can be generated, various types of sensor probe mounting supports can be provided, and optical or electrical equipment can be supported. And the installation angle and the position of the probe can be adjusted according to the requirements.
In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that: a high-speed rotation vibration tester comprises a simulation rotating platform assembly and a rotor assembly, wherein a driving motor, a frequency converter and a safety interlocking switch are arranged in the simulation rotating platform assembly, a rotor assembly mounting panel is arranged on the front side of the simulation rotating platform assembly, a rotor tray is arranged on the rotor assembly mounting panel through a high-speed bearing, the rotor assembly is mounted on the rotor tray, a through hole is formed in the center of the rotor tray, the shaft end of the driving motor is provided with a driving shaft through a coupling connection, the driving shaft comprises a connecting piece positioned at the end part, a connecting hole matched with the connecting piece is formed in the center of the rotor assembly, the driving shaft penetrates through the through hole and is matched and connected with the connecting hole, a circumference scale is arranged on the rotor assembly mounting panel in the circumference scale, a plurality of mounting holes are uniformly formed in the rotor assembly mounting panel in the circumference scale along the circumferential direction, the installation of a plurality of interval is equipped with the probe installing support of U-shaped on the mounting hole, probe installing support lateral wall is connected with the mounting hole and is just towards rotor subassembly center outside, probe installing support bottom evenly is equipped with five probe mounting holes, one of them install optical probe in the probe mounting hole, install the probe support ring between the probe installing support upside, the installation is equipped with sliding ring stator assembly on the probe support ring, sliding ring stator assembly upside is equipped with rotational speed synchronous sensor mounting hole, install rotational speed synchronous sensor on the mounting hole.
As an improvement: a frequency converter control panel is arranged on one side of the simulation rotating platform assembly, and the control panel comprises a plurality of buttons, a speed control rotating switch and an LED display.
As an improvement: but simulation revolving stage subassembly bottom is equipped with four height-adjusting's installation foot, be equipped with a plurality of fixed orificess on the installation foot.
As an improvement: the installation of simulation revolving stage subassembly openly is equipped with the protection and observes the cover, the protection is observed the cover inboard and is equipped with and has the complex safety interlock to drive the round pin with safety interlock switch.
As an improvement: the rotor assembly consists of a rotor hub and blades, the root of which is located in an opening in the rotor hub and is secured by bolts.
As an improvement: the probe mounting bracket is provided with a V-shaped notch consistent with a probe shaft of the sensor, and the V-shaped notch is matched with the circumferential scales simultaneously.
As an improvement: the front surface of the simulation rotating platform component is provided with two circular lead ports.
As an improvement: the slip ring stator assembly is characterized in that a first slip ring mounting hole corresponding to the mounting hole is formed in the probe support ring in the circumferential direction, the slip ring stator assembly is of an inverted U-shaped structure and clamped at the radial position of the probe support ring, and second slip ring mounting holes matched with the first slip ring mounting hole are formed in two sides of the bottom of the slip ring stator assembly.
Compared with the prior art, the utility model has the advantages that: 1. the high-speed rotation vibration tester can be provided with a plurality of sensors such as a slip ring, a rotation speed synchronous sensor, an optical probe and the like. The sensor mounting requirements of a blade tip timing system and a strain electric measurement system are met.
2. The high-speed rotation vibration tester can be tightly connected with the working table surface, and the influence of self vibration on test measurement is reduced.
3. The high-speed rotating vibration tester has high rotating speed, can reach the rotating speed required by the resonance of the blades, and can enable the sensor to acquire obvious vibration signals.
4. The rotor assembly of the high-speed rotating vibration tester is replaceable, and the blades are adjustable. Can be replaced and adjusted according to the test requirements.
Drawings
FIG. 1 is a schematic view of a high-speed rotational vibration tester according to the present invention;
FIG. 2 is a schematic view of the internal space layout of the simulation turntable assembly of the high-speed rotational vibration tester of the present invention;
FIG. 3 is a schematic view of the mounting of a rotor assembly of a high speed rotational vibration tester according to the present invention;
FIG. 4 is a schematic view of the mounting bracket for mounting a probe of a high-speed rotational vibration tester according to the present invention;
FIG. 5 is a schematic view of the mounting of a probe support ring of a high speed rotational vibration tester of the present invention;
FIG. 6 is a schematic view of the installation of a slip ring of the high-speed rotation vibration tester of the present invention;
FIG. 7 is a schematic view of the mounting of an optical probe of a high speed rotational vibration tester according to the present invention;
FIG. 8 is a schematic view of the installation of a synchronous rotational speed sensor of a high speed rotational vibration tester according to the present invention;
FIG. 9 is a schematic view of a high speed rotational vibration tester safety interlock pin in accordance with the present invention;
FIG. 10 is a schematic view of the mounting feet and the working platform of the high speed rotational vibration tester of the present invention;
reference numerals comparison table:
the test system comprises a 1-simulation rotating platform assembly, a 2-driving motor, a 3-frequency converter, a 4-safety interlocking switch, a 5-frequency converter control panel, a 6-rotor assembly mounting panel, a 7-rotor tray, an 8-driving shaft, a 9-rotor assembly, a 10-protection observation cover, an 11-safety interlocking driving pin, a 12-probe mounting bracket, a 13-probe mounting hole, a 14-V-shaped notch, a 15-probe supporting ring, a 16-slip ring stator assembly and a 17-circular lead port.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a high-speed rotation vibration tester includes a simulation rotating platform assembly 1, and a driving motor 2, a frequency converter 3, and a safety interlock switch 4 are provided in the simulation rotating platform assembly 1. The analog rotary table assembly 1 the analog rotary table has a frequency converter control panel 5 mounted on one side of the apparatus.
The inverter control panel 5 includes a plurality of buttons and a speed control rotary switch. The simulation rotating platform assembly comprises a simulation rotating platform assembly 1, a rotor assembly mounting panel 6, a rotor tray 7, a high-speed bearing, a light-emitting diode (LED) display and a control circuit, wherein the simulation rotating platform assembly 1 is provided with the rotor assembly mounting panel 6 on the front side, and the rotor tray 7 is connected with the rotor assembly mounting panel 6 through the high-speed bearing. The center of the rotor tray 7 is a through hole, and the driving shaft 8 passes through the center through hole of the rotor tray 7 and is connected with the driving motor 2 inside the simulation rotating platform assembly 4 through a coupler. The rotor assembly 9 is matched with the rotor tray 7 to realize centering, and the rotor assembly 9 is matched with the driving shaft 8 to realize transmission. The rotor assembly 9 is fixedly connected with the rotor tray 7 through bolts after the rotor assembly 9 is matched with the driving shaft 8 and the rotor tray 7. The frequency converter is operated by a frequency converter control panel 5 on the side surface of the simulation rotating platform assembly 1, so that the rotating speed of the driving motor 2 is adjusted, and the driving motor 2 drives the rotor assembly 9 to rotate through the driving shaft 8. The rotor assembly 9 is fixedly connected with the rotor tray 7 to realize centering, unbalance is reduced, and the situation that the vibration of the rotor assembly influences the acquisition of blade vibration information in the rotating process is avoided.
As shown in fig. 10, the bottom of the simulation rotating table assembly 1 has four height adjustable mounting feet, and the simulation rotating table should be placed on the working surface, and the height of the feet is adjusted to ensure that the device is firmly supported and cannot move. The mounting feet are also reserved with a plurality of mounting holes that can be secured to a work surface using at least 2M 10 bolt fasteners per mounting foot, as desired. And the simulation rotating platform is prevented from loosening under vibration by using bolt locking.
As shown in fig. 1, 2 and 9, the high speed rotational vibration tester is equipped with a safety interlock system and an emergency stop button on top of the simulated rotational stage assembly that immediately disables power to the unit when pressed. Restarting the system requires 1/4 turns clockwise in the direction of the button arrow. The simulation rotating platform assembly 1 is matched with the protection observation cover 10, the protection observation cover 10 is provided with a safety interlocking driving pin 11, when the protection observation cover 10 and the simulation rotating platform assembly 1 are assembled in place, the safety interlocking driving pin 11 triggers the safety interlocking switch 4 inside the simulation rotating assembly, and if the safety interlocking switch 4 is not triggered, the power supply is disabled.
As shown in fig. 3, the rotor assembly 9 is composed of a rotor hub and blades, 40 blade mounting positions (hub design and blade number, which can be changed according to different rotational vibration test purposes) are reserved on the rotor hub, and the root of each blade is located in an opening in the rotor hub. With the blade in place, the blade may be secured using M5x16 countersunk bolts with M5 wedge washers. The number of the blades can be increased or reduced according to the requirement of vibration research.
As shown in fig. 4-8, the sensor array of the high-speed rotational vibration tester can be configured in a variety of ways. As a standard, 9 standard probe mounting brackets 12 (the number can be modified as appropriate) are provided, and the probe mounting brackets 12 will support a sensor probe with M6 screw mounting. These mounting brackets may also act as an excitation block around the rotor annulus. As each vane passes through a probe support ring, it encounters a region of high pressure air, thereby achieving a greater pressure. In order to excite the blades of the rotor, it is necessary to adjust the rotational speed and the number of probe support rings/excitation retardations. The mounting bracket has one five probe mounting holes 13. This allows the probe to be placed at different points of the blade chord, facilitating torsional/non-torsional investigation of the blade. The probe mounting bracket 12 has a V-shaped notch 14 that coincides with the probe axis of the sensor. When mounted on the simulated rotary table assembly 1, the cut-off line is located over a series of angular markings around the rotor, indicating the mounting position of the sensor probe on the rotor ring. The probe mounting position can be quickly adjusted at any time to reset the test settings.
After the probe mounting bracket 12 is mounted in place at the desired angular position, the probe support ring 15 is mounted to the mounting bracket. The probe support ring 15 is secured to the probe mounting bracket 12 using M6x18 countersunk bolts and wedge-shaped lock washers.
After the probe support ring 15 is installed, the slip ring stator assembly 16 can be installed on the probe support ring according to the required installation angle. A slip ring mounting hole and an installation hole of an optical fiber synchronous (OPR) sensor are reserved on the slip ring stator assembly 16. The required sensors can be installed according to the test requirements.
The front surface of the simulation rotating platform component 1 is provided with two circular sensor lead ports 17, and sensor probe leads arranged on a sensor support frame and a slip ring stator assembly 16 can be led into the simulation rotating platform component 1 and then led out from a lead window at the back of the simulation rotating platform component.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a high-speed rotatory vibration tester, includes simulation revolving stage subassembly and rotor subassembly, simulation revolving stage subassembly internally mounted has driving motor, converter and safety interlock switch, its characterized in that: the simulation rotating platform assembly is characterized in that a rotor assembly mounting panel is arranged on the front side of the simulation rotating platform assembly, the rotor assembly mounting panel is connected with a rotor tray through a high-speed bearing, the rotor assembly is mounted on the rotor tray, a through hole is formed in the center of the rotor tray, a driving shaft is arranged at the shaft end of the driving motor through a coupling, the driving shaft comprises a connecting piece arranged at the end part, a connecting hole matched with the connecting piece is formed in the center of the rotor assembly, the driving shaft penetrates through the through hole, the connecting piece is matched and connected with the connecting hole, a circumference scale is arranged on the rotor assembly mounting panel, a plurality of mounting holes are uniformly formed in the rotor assembly mounting panel inside the circumference scale along the circumferential direction, U-shaped probe mounting brackets are mounted on the mounting holes at intervals, the side wall of each probe mounting bracket is connected with the mounting hole and faces the outer side of the center of the rotor assembly, the optical fiber sensor is characterized in that five probe mounting holes are uniformly formed in the bottom of the probe mounting support, one of the five probe mounting holes is internally provided with an optical probe, a probe support ring is mounted between the upper sides of the probe mounting supports, a sliding ring is mounted on the probe support ring, a rotating speed synchronous sensor mounting hole is formed in the upper side of the sliding ring, and a rotating speed synchronous sensor is mounted on the mounting hole.
2. A high speed rotational vibration tester as claimed in claim 1, wherein: a frequency converter control panel is mounted on one side of the analog rotary table assembly and includes buttons and speed control rotary switches and also includes an LED display.
3. A high speed rotational vibration tester as claimed in claim 1, wherein: but simulation revolving stage subassembly bottom is equipped with four height-adjusting's installation foot, be equipped with a plurality of fixed orificess on the installation foot.
4. A high speed rotational vibration tester as claimed in claim 1, wherein: the installation of simulation revolving stage subassembly openly is equipped with the protection and observes the cover, the protection is observed the cover inboard and is equipped with and has the complex safety interlock to drive the round pin with safety interlock switch.
5. The high-speed rotational vibration tester of claim 1, wherein: the rotor assembly consists of a rotor hub and blades, the root of which is located in an opening in the rotor hub and is secured by bolts.
6. The high-speed rotational vibration tester of claim 1, wherein: the probe mounting bracket is provided with a V-shaped notch consistent with a probe shaft of the sensor, and the V-shaped notch is matched with the circumferential scale at the same time.
7. A high speed rotational vibration tester as claimed in claim 1, wherein: the front surface of the simulation rotating platform component is provided with two circular lead ports.
8. A high speed rotational vibration tester as claimed in claim 1, wherein: the probe support ring is provided with a first slip ring mounting hole corresponding to the mounting hole in the circumferential direction, the slip ring is of an inverted U-shaped structure and is clamped at the radial position of the slip ring, and two sides of the bottom of the slip ring are provided with second slip ring mounting holes matched with the first slip ring mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122232867.8U CN217032951U (en) | 2021-09-15 | 2021-09-15 | High-speed rotation vibration tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122232867.8U CN217032951U (en) | 2021-09-15 | 2021-09-15 | High-speed rotation vibration tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217032951U true CN217032951U (en) | 2022-07-22 |
Family
ID=82411342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122232867.8U Active CN217032951U (en) | 2021-09-15 | 2021-09-15 | High-speed rotation vibration tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217032951U (en) |
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2021
- 2021-09-15 CN CN202122232867.8U patent/CN217032951U/en active Active
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