Axial flow fan impeller accelerated fatigue test device

Abstract

The utility model discloses an accelerated fatigue test device for an axial flow fan impeller, which comprises a supporting part, a conical barrel is arranged on the supporting part, an outer air barrel is arranged above the conical barrel, and a driving motor is arranged between the conical barrel and the outer air barrel; the tested impeller is mounted on a front end shaft extension of the driving motor; an inner air duct is arranged in the outer air duct, and two-layer protection is formed through the outer air duct and the inner air duct. According to the device, the double-layer structure design of the outer air duct and the inner air duct is adopted, and the interlayer between the outer air duct and the inner air duct is used for sound insulation and noise reduction, so that airflow noise generated in the high-speed rotation process is effectively reduced, and the comfort level of a test environment is improved. Meanwhile, impeller fragments possibly generated in the test process can be effectively blocked through a double-layer protection structure of the inner air duct and the outer air duct, the impeller fragments are prevented from being scattered, and the safety of the test process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a test device, especially a kind of axial flow ventilation impeller accelerated fatigue test device. BACKGROUND

[0002] With the development of modern industry, the performance requirement of axial flow ventilation impeller is higher and higher. In order to ensure the reliability and durability of impeller in actual use, it is usually necessary to carry out accelerated fatigue test.

[0003] In related art, accelerated fatigue test is usually carried out by directly driving fan, and since fan is directly used for accelerated fatigue test, a large amount of electric energy needs to be consumed, causing waste of energy. And since airflow noise generated by high-speed operation of fan is large, it seriously affects the comfort of test environment, and may adversely affect the health of operator.

[0004] In addition, in the experimental scheme, the gap between impeller and wind cylinder is small when rotating at high speed, and scraping phenomenon is easy to occur, which affects the accuracy and reliability of test. At the same time, the motor inside the fan is easy to overload and burn out during acceleration process, increasing the risk in test process. SUMMARY

[0005] The utility model aims at at least solving one of the technical problems existing in prior art. For this purpose, the utility model provides an axial flow ventilation impeller accelerated fatigue test device, which can significantly save electric energy.

[0006] According to the axial flow ventilation impeller accelerated fatigue test device of the first aspect embodiment of the utility model, the support component is provided with a conical cylinder, an outer wind cylinder is arranged above the conical cylinder, and a driving motor is arranged between the conical cylinder and the outer wind cylinder. The test impeller is installed on the front end shaft of the driving motor. The outer wind cylinder is provided with an inner wind cylinder, and two layers of protection are formed by the outer wind cylinder and the inner wind cylinder.

[0007] According to the axial flow ventilation impeller accelerated fatigue test device of the utility model embodiment, at least the following beneficial effects are obtained:

[0008] The device adopts double-layer structure design of outer wind cylinder and inner wind cylinder, and the airflow noise generated in high-speed rotation process is effectively reduced by sound insulation and noise reduction of the interlayer between outer wind cylinder and inner wind cylinder, and the comfort of test environment is improved. At the same time, the double-layer protection structure of inner wind cylinder and outer wind cylinder can effectively block the impeller fragments that may be generated in test process, prevent them from flying, and ensure the safety of test process.

[0009] According to some embodiments of the utility model, the support component includes a bottom air duct arranged at the bottom of the conical cylinder, and the bottom air duct is in communication with the inside of the conical cylinder, thereby ensuring smooth transition and guidance of airflow and effectively improving the uniformity and stability of airflow in the air duct, and reducing turbulence and airflow interference.

[0010] According to some embodiments of the utility model, a flow regulator is arranged between the conical cylinder and the bottom air duct, and an outlet steel mesh is arranged at the end of the flow regulator away from the bottom air duct, so that the outlet steel mesh can effectively block impeller fragments generated in the test process and prevent the impeller fragments from flying and scattering, thereby protecting the safety of equipment and operators.

[0011] According to some embodiments of the utility model, an outlet muffler is arranged at the lower part of the outlet steel mesh, so that the outlet muffler can significantly reduce airflow noise generated in the test process and improve the comfort of the test environment.

[0012] According to some embodiments of the utility model, a motor mounting plate is arranged at the top of the conical cylinder, and the driving motor is mounted on the motor mounting plate.

[0013] According to some embodiments of the utility model, the outer air duct and the inner air duct are both mounted on the motor mounting plate through radial positioning of the stop aperture, and the gap between the inner air duct and the impeller is much larger than the gap between the impeller of the axial flow fan and the air duct, so as to reduce the work done by the impeller on the gas when the impeller rotates.

[0014] According to some embodiments of the utility model, the motor mounting plate is mounted on the conical cylinder through radial positioning of the stop aperture.

[0015] According to some embodiments of the utility model, the inner air duct is provided with an adjustable air door at the top, so that the airflow can be flexibly adjusted according to the test requirements, thereby ensuring the stability and uniformity of airflow under different test conditions.

[0016] According to some embodiments of the utility model, an inlet steel mesh is mounted at the end of the air door away from the inner air duct, so that the inlet steel mesh can effectively block large-particle impurities and fragments from entering the inner air duct, thereby preventing the impurities and fragments from damaging the impeller and other internal components and increasing the safety and durability of the device.

[0017] According to some embodiments of the utility model, an inlet muffler is arranged at the top of the inlet steel mesh, so as to further reduce airflow noise generated in the test process.

[0018] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a kind of axial flow ventilation impeller accelerated fatigue test device structural schematic diagram.

[0021] Reference signs: 1, bottom air duct;2, outlet muffler;3, flow regulator;4, outlet steel mesh;5, conical cylinder;6, drive motor;7, motor mounting plate;8, test impeller;9, inner air duct;10, outer air duct;11, air door;12, inlet steel mesh;13, inlet muffler. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0023] In the description of the present application, it is understood that, if the orientation description, such as up, down, front, back, left, right and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application, indicating or implying that the device or element must have a specific orientation, a specific orientation and operation, therefore cannot be understood as limiting the present application.

[0024] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. It is understood that the number is not included, and the above, below, etc. It is understood that the number is included. If there is a description of the first, the second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. Should be interpreted broadly, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0026] Reference Figure 1The application discloses an axial flow ventilation impeller accelerated fatigue test device, which comprises a supporting component, a conical cylinder 5 is arranged on the supporting component, an outer air cylinder 10 is arranged above the conical cylinder 5, and a driving motor 6 is arranged between the conical cylinder 5 and the outer air cylinder 10; a tested impeller 8 is arranged on the front end shaft of the driving motor 6; an inner air cylinder 9 is arranged in the outer air cylinder 10, and the outer air cylinder 10 and the inner air cylinder 9 form two layers of protection.

[0027] The device adopts a double-layer structure design of the outer air cylinder 10 and the inner air cylinder 9, sound insulation and noise reduction are realized through the interlayer between the outer air cylinder 10 and the inner air cylinder 9, airflow noise generated in the high-speed rotating process is effectively reduced, and the comfort of the test environment is improved. Meanwhile, the double-layer protection structure of the inner air cylinder 9 and the outer air cylinder 10 can effectively block impeller fragments possibly generated in the test process, prevent the impeller fragments from flying, and ensure the safety of the test process.

[0028] Further, the supporting component comprises a bottom air cylinder 1 arranged at the bottom of the conical cylinder 5, the bottom air cylinder 1 is communicated with the inside of the conical cylinder 5, the stable transition and guidance of airflow are ensured, the uniformity and stability of airflow in the air cylinder are effectively improved, and turbulence and airflow interference are reduced.

[0029] Specifically, a flow regulator 3 is arranged between the conical cylinder 5 and the bottom air cylinder 1, an outlet steel mesh 4 is arranged at the end of the flow regulator 3 away from the bottom air cylinder 1, the outlet steel mesh 4 can effectively block impeller fragments generated in the test process, prevent the impeller fragments from flying, and protect the safety of equipment and operating personnel. The flow regulator 3 can make the airflow passing through the air cylinder more stable and uniform, avoid airflow turbulence, and further improve the accuracy and reliability of the test. The flow regulator 3 can also prevent airflow from flowing back, ensure that the airflow always keeps in one direction, and reduce the adverse effects in the impeller fatigue test process.

[0030] In the embodiment, an outlet muffler 2 is arranged at the lower part of the outlet steel mesh 4, the outlet muffler 2 can significantly reduce airflow noise generated in the test process, and improve the comfort of the test environment.

[0031] Further, a motor mounting plate 7 is radially positioned and mounted on the conical cylinder 5 through a stop opening, and the driving motor 6 is mounted on the motor mounting plate 7. The outer air cylinder 10 and the inner air cylinder 9 are both radially positioned and mounted on the motor mounting plate 7 through stop openings, the gap between the inner air cylinder 9 and the impeller is much larger than the gap between the impeller of the axial flow fan and the air cylinder, and is used for reducing the work of the impeller on the gas when the impeller rotates.

[0032] Preferably, an adjustable air door is arranged at the top of the inner air cylinder 9, so that the airflow can be flexibly adjusted according to the test requirements, and the stability and uniformity of the airflow under different test conditions are ensured.

[0033] Further, the air door is installed with an inlet steel mesh 12 at one end away from the inner air duct 9, which effectively blocks the large particles and debris from entering the inner air duct 9, preventing the damage to the impeller and other internal components, and increasing the safety and durability of the device.

[0034] Further, the inlet steel mesh 12 is provided with an inlet muffler 13 at the top, further reducing the airflow noise generated during the test.

[0035] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" 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 present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Although the 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 these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An axial flow fan impeller accelerated fatigue test device characterized by, The support component comprises a conical cylinder, an outer air cylinder is arranged above the conical cylinder, a driving motor is arranged between the conical cylinder and the outer air cylinder; The test impeller is arranged on the front end shaft of the driving motor; An inner air cylinder is arranged in the outer air cylinder, and two layers of protection are formed by the outer air cylinder and the inner air cylinder. The support component comprises a bottom air cylinder arranged at the bottom of the conical cylinder, and the bottom air cylinder is in communication with the inside of the conical cylinder.

2. The test device of claim 1, wherein, A rectifier is arranged between the conical cylinder and the bottom air cylinder, and an outlet steel mesh is arranged at the end of the rectifier away from the bottom air cylinder.

3. The test device of claim 2, wherein, An outlet muffler is arranged at the lower part of the outlet steel mesh.

4. The test device of claim 3, wherein A motor mounting plate is arranged at the top of the conical cylinder, and the driving motor is arranged on the motor mounting plate.

5. The test device of claim 1, wherein The outer air cylinder and the inner air cylinder are radially positioned and mounted on the motor mounting plate through a stop opening.

6. The test device of claim 5, wherein, The motor mounting plate is radially positioned and mounted on the conical cylinder through a stop opening.

7. The test device of claim 5, wherein An adjustable air door is arranged at the top of the inner air cylinder.

8. The test device of claim 1, wherein, An inlet steel mesh is arranged at the end of the air door away from the inner air cylinder.

9. The test device of claim 8, wherein, An inlet muffler is arranged at the top of the inlet steel mesh.

10. The test device of claim 9, wherein, ​

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