CN214149779U - Salt spray vibration composite test system - Google Patents
Salt spray vibration composite test system Download PDFInfo
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- CN214149779U CN214149779U CN202023118171.4U CN202023118171U CN214149779U CN 214149779 U CN214149779 U CN 214149779U CN 202023118171 U CN202023118171 U CN 202023118171U CN 214149779 U CN214149779 U CN 214149779U
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Abstract
The utility model discloses a salt fog vibration composite test system, including fastening frock, vibrating device, salt fog case, be used for carrying out measuring first measuring element, be used for carrying out measuring second measuring element, be used for carrying out measuring third measuring element, vibration control unit and dynamic signal analysis unit to the mechanical parameter of being tested the product to the vibration parameter of vibrating device, second measuring element is for being used for monitoring by the eddy current sensor of being tested the product vibration displacement, and eddy current sensor locates in the salt fog environment. The utility model discloses a salt fog vibration composite test system adopts eddy current sensor to accomplish the reliability examination of blade under the complex environment, has important meaning to the fatigue life of more real evaluation blade to simple structure easily realizes.
Description
Technical Field
The utility model belongs to the technical field of the vibration, concretely relates to salt fog vibration composite test system.
Background
The compressor blade is a main runner part in an aeroengine and a gas turbine, and can be inevitably subjected to corrosion of a gas environment (more obviously used in coastal lakes, rainy and humid areas and high-temperature areas), so that the mechanical property of the metal surface of the blade is changed; vibration fatigue is the main damage mode of the blade, and the damage of the blade caused by the superposition of environmental corrosion and vibration cycle load is particularly common. The existing test technology can only examine the influence of single factors (such as vibration and salt spray) on the blades independently, and the actual environment of the blades cannot be simulated really. Secondly, the traditional test method adopts laser displacement sensors (red light and blue light) to control the displacement of the blade, and under the salt spray environment, the laser can be deflected, and the sensor can be corroded by the salt spray environment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a salt fog vibration composite test system adopts eddy current sensor to accomplish the reliability examination of blade under complex environment, reflects the fatigue life of blade more really.
In order to achieve the above object, the present invention provides the following technical solutions: a salt spray vibration composite test system comprises a fastening tool for supporting and fixing a tested product, a vibration device for providing an exciting force for the tested product, a salt spray box for providing a salt spray environment for the tested product, a first measuring element for measuring vibration parameters of the vibration device, a second measuring element for measuring the vibration parameters of the tested product, a third measuring element for measuring mechanical parameters of the tested product, a vibration control unit for controlling the vibration device according to the measurement data of the first measuring element and the second measuring element, and a dynamic signal analysis unit for analyzing a test sample according to the measurement data of the third measuring element;
the second measuring element is an eddy current sensor used for monitoring vibration displacement of a tested product, and the eddy current sensor is arranged in the salt spray environment.
Furthermore, the salt fog box is provided with a bottom opening, the bottom opening of the salt fog box is provided with a plug, the bottom opening supports the transition bottom plate of the fastening tool, the transition bottom plate is connected to the bearing table of the vibrating device, and the fastening tool is arranged in the salt fog box.
Furthermore, the whole or partial upper table surface of the transition bottom plate is positioned in the salt fog box and is contacted with the salt fog, and the rest part of the transition bottom plate extends out of the salt fog box and is connected with the bearing table of the vibration device.
Furthermore, the box body of the salt spray box is fixedly connected to a support, and the bottom opening of the salt spray box is connected to the transition bottom plate through a sealing soft connecting part.
Further, the first measuring element is an acceleration sensor used for measuring the excitation acceleration of the tested product.
Furthermore, the acceleration sensor is arranged on a bearing platform of the vibration device and is positioned outside the salt fog box.
Furthermore, the bearing table of the vibration device is a moving coil assembly or a sliding table assembly.
Further, the third measuring element is a resistance strain gauge for measuring the strain force of the tested product, and the resistance strain gauge is adhered to the tested product.
Further, the resistance strain gauge is a resistance strain sheet or a resistance strain flower.
Further, the tested product is a compressor blade.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1) the utility model discloses a salt spray vibration composite test system, which adopts the eddy current sensor to complete the reliability examination of the blade in a complex environment, has important significance for more truly evaluating the fatigue life of the blade, and has simple structure and easy realization;
2) the salt fog vibration composite test system disclosed by the utility model can reduce the corrosion range of the salt fog environment as much as possible by arranging the bottom opening and the transition bottom plate on the salt fog box;
3) the salt fog vibration composite test system disclosed by the utility model has the advantages that the weight of the salt fog box can not influence the test result by flexibly connecting the salt fog box on the transition bottom plate;
4) the utility model discloses a salt fog vibration composite test system, outside locating the salt fog case with acceleration sensor, avoid salt fog environment corrosion acceleration sensor.
Drawings
Fig. 1 is a schematic structural diagram of the salt spray vibration composite test system disclosed in the present invention.
Wherein, 1, the product to be tested; 2. fastening a tool; 3. a vibrating device; 4. a salt spray box; 5. a first measuring element; 6. a second measuring element; 7. a third measuring element; 8. a vibration control unit; 9. a dynamic signal analysis unit; 10. a transition floor; 11. the soft connection component is sealed.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following is a preferred embodiment of the present invention, but is not intended to limit the scope of the present invention.
Example one
Referring to fig. 1, as shown in the figure, a salt spray vibration composite test system comprises a fastening tool 2 for supporting and fixing a tested product 1, a vibration device 3 for providing an exciting force for the tested product 1, a salt spray tank 4 for providing a salt spray environment for the tested product 1, a first measuring element 5 for measuring a vibration parameter of the vibration device 3, a second measuring element 6 for measuring a vibration parameter of the tested product 1, a third measuring element 7 for measuring a mechanical parameter of the tested product 1, a vibration control unit 8 for controlling the vibration device 3 according to measurement data of the first measuring element 5 and the second measuring element 6, and a dynamic signal analysis unit 9 for analyzing the test sample 1 according to the measurement data of the third measuring element 7;
the second measuring element 6 is an eddy current sensor for monitoring the vibration displacement of the tested product 1, and the eddy current sensor is arranged in a salt spray environment.
In the preferred embodiment of the present invention, the salt fog tank 4 is provided with a bottom opening, the bottom opening of the salt fog tank 4 is further provided with a transition bottom plate 10 for plugging the bottom opening of the salt fog tank 4 and supporting the fastening tool 2, and plugging the bottom opening of the salt fog tank 4, the transition bottom plate 10 is connected to the bearing table 3a of the vibrating device 3, and the fastening tool 2 is disposed in the salt fog tank 4.
In the preferred embodiment of the present embodiment, all or part of the upper surface of the transition bottom plate 10 is located in the salt fog tank 4 and is in contact with the salt fog, and the rest of the transition bottom plate 10 extends out of the salt fog tank 4 and is connected to the bearing table 3a of the vibration device 3.
In the preferred embodiment of the present embodiment, the tank body of the salt spray tank 4 is fixedly connected to a support (not shown in the figure), and the bottom opening of the salt spray tank 4 is connected to the transition bottom plate 22 through the sealing soft connecting part 11.
In a preferred embodiment of the present embodiment, the first measuring device 5 is an acceleration sensor for measuring the excitation acceleration of the product 1 under test.
In the preferred embodiment of the present embodiment, the acceleration sensor is disposed on the bearing table 3a of the vibration device 3 and outside the salt mist box 4.
In a preferred embodiment of the present embodiment, the bearing table 3a of the vibration device 3 is a sliding table assembly.
In a preferred embodiment of the present embodiment, the third measuring element 7 is a resistance strain gauge for measuring the strain force of the product 1 under test, and the resistance strain gauge is attached to the product 1 under test.
In a preferred embodiment of this embodiment, the resistance strain gauge is a resistance strain gauge.
In the preferred embodiment of the present embodiment, the product 1 to be tested is a compressor blade.
The utility model aims to develop a salt fog vibration composite test system, it can accomplish the reliability examination of blade under the complex environment, has important meaning to the fatigue life of more real evaluation blade to simple structure easily realizes.
The vibration device provides sinusoidal exciting force required by tests, the transition bottom plate is connected with the vibration device and a fastening tool, the fastening tool is used for fastening tested products, the sealing soft connecting component is used for sealing salt mist environments, salt mist is prevented from overflowing out of a salt mist box, a vibration test system is polluted, the salt mist box is used for generating salt mist environments specified by standards, the resistance strain gauge is used for monitoring stress of the tested products, the eddy current sensor is used for monitoring vibration displacement of the tested products, the acceleration sensor is used for monitoring exciting acceleration of the vibration device, the vibration control unit is a vibration controller, the Vibstar vibration controller is adopted and used for controlling exciting acceleration of the vibration device, the dynamic signal analysis unit is a dynamic signal test analyzer and used for collecting signals of the resistance strain gauge.
The blade is fastened on a fastening tool through a bolt, the fastening tool is fastened on a bearing table of the vibration test table through a transition bottom plate, and the local transition bottom plate and the integral fastening tool stretch into the customized salt fog box. The sealing soft connecting part is connected with the outer edge of the transition bottom plate and the salt spray box. The resistance strain gauge is pasted on the blade and connected with the dynamic signal testing analyzer, the eddy current sensor monitors the displacement of the blade and is connected with the Vibstar vibration controller, different stresses are obtained by controlling different displacement values, and the relationship between the displacement and the stress of the test piece is calibrated by using a least square method. And the displacement value is reversely deduced by predicting the fatigue life of the blade. After the formal test is started, the salt fog device generates a standard salt fog environment, a target displacement value is set through the Vibstar vibration controller, the vibration device is driven, and the displacement value of the eddy current sensor is close to the target value and is kept stable. The acceleration sensor is arranged on a bearing table of the vibration device and used for monitoring the excitation acceleration of the vibration device and achieving the purpose of protecting the system.
Example two
The rest is the same as the first embodiment, except that the bearing platform of the vibration device is a moving coil assembly.
EXAMPLE III
The rest is the same as the first embodiment, except that the resistance strain gauge is replaced by a resistance strain gauge.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including by way of illustration of the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A salt spray vibration composite test system comprises a fastening tool for supporting and fixing a tested product, a vibration device for providing an exciting force for the tested product, a salt spray box for providing a salt spray environment for the tested product, a first measuring element for measuring vibration parameters of the vibration device, a second measuring element for measuring the vibration parameters of the tested product, a third measuring element for measuring mechanical parameters of the tested product, a vibration control unit for controlling the vibration device according to the measurement data of the first measuring element and the second measuring element, and a dynamic signal analysis unit for analyzing a test sample according to the measurement data of the third measuring element;
the device is characterized in that the second measuring element is an eddy current sensor used for monitoring the vibration displacement of a tested product, and the eddy current sensor is arranged in the salt spray environment.
2. The salt fog vibration composite test system as claimed in claim 1, wherein the salt fog tank is provided with a bottom opening, the bottom opening of the salt fog tank is provided with a transition bottom plate for plugging the bottom opening and supporting the fastening tool, the transition bottom plate is connected to a bearing platform of the vibration device, and the fastening tool is arranged in the salt fog tank.
3. The salt fog vibration composite test system of claim 2, wherein all or part of the upper table surface of the transition bottom plate is located in the salt fog tank and is in contact with the salt fog, and the rest part of the transition bottom plate extends out of the salt fog tank and is connected with the bearing platform of the vibration device.
4. The salt fog vibration testing system of claim 2, wherein the tank body of the salt fog tank is fixedly connected to a support, and the bottom opening of the salt fog tank is connected to the transition bottom plate through a sealing soft connecting part.
5. The salt fog vibration compounding test system of claim 1, wherein the first measurement element is an acceleration sensor for measuring excitation acceleration of a product under test.
6. The salt fog vibration compounding test system of claim 5, wherein the acceleration sensor is disposed on a bearing table of the vibration device and outside the salt fog tank.
7. The salt fog vibration composite test system of claim 1, wherein the bearing platform of the vibration device is a moving coil assembly or a sliding platform assembly.
8. The salt fog vibration testing complex of claim 1, wherein the third measuring element is a resistance strain gauge for measuring strain force of the product under test, the resistance strain gauge being attached to the product under test.
9. The salt fog vibration composite test system of claim 8, wherein the resistance strain gauge is a resistance strain gauge or a resistance strain rosette.
10. The salt fog vibration composite test system of claim 1, wherein the product being tested is a compressor blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023118171.4U CN214149779U (en) | 2020-12-22 | 2020-12-22 | Salt spray vibration composite test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023118171.4U CN214149779U (en) | 2020-12-22 | 2020-12-22 | Salt spray vibration composite test system |
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| Publication Number | Publication Date |
|---|---|
| CN214149779U true CN214149779U (en) | 2021-09-07 |
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| CN202023118171.4U Active CN214149779U (en) | 2020-12-22 | 2020-12-22 | Salt spray vibration composite test system |
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| CN (1) | CN214149779U (en) |
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- 2020-12-22 CN CN202023118171.4U patent/CN214149779U/en active Active
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