Fan performance test system and test method

Abstract

The invention relates to a fan performance test system, which comprises an air chamber, a test port is arranged on the front end face of the air chamber, and a tested fan is arranged at the test port; the two sets of flow stabilizing devices are arranged at the two ends of the interior of the air chamber correspondingly and used for stabilizing the uniformity of the air volume in the air chamber; the control device is arranged between the two flow stabilizing devices, and the control device controls the flow in the air chamber according to the air speed of the tested fan; and the auxiliary air supply device is used for stabilizing the air volume in the air chamber when the air power in the air chamber is insufficient. The air volume in the air chamber is always stable, the reliability and the stability of the test are improved, the air flow in the air chamber is optimized, and the accuracy and the reliability of the test are improved.

Description

Technical Field

[0001] The present application relates to the technical field of fan performance testing, and in particular to a fan performance testing system and testing method. Background Art

[0002] At present, fan performance testing is an important part of evaluating fan product performance and is widely used in industrial production and scientific research. With the continuous improvement of society's requirements for environmental protection and energy conservation, an efficient and stable fan performance testing system is particularly important.

[0003] At present, common fan performance test systems usually adopt the design of a single wind chamber and a single air source. Specifically, during the test, the fan under test is placed at the test port of the wind chamber, and a constant air volume is provided by the main air source in the wind chamber. However, the flow rate is often slower towards the end of the wind chamber, making it difficult to measure the actual flow range. At the same time, there is also the occasional situation where the flow in the wind chamber is unstable, which will also cause a certain deviation between the test data and the actual data. In addition, when the air volume is close to the fan under test at the end of the wind chamber, because the space size of the wind chamber cannot be adjusted, the air volume at the end will be further dispersed in the space at the end of the wind chamber before reaching the fan under test, thereby affecting the test accuracy of the fan under test.

[0004] In view of the above-mentioned related technologies, it is necessary to propose a fan performance testing system and a testing method to solve one of the above-mentioned technical problems. Summary of the invention

[0005] In order to solve one of the above technical problems, the present application provides a fan performance testing system and testing method.

[0006] The present application provides a fan performance test system and test method using the following technical solutions: A fan performance testing system, comprising: A wind chamber, wherein a test port is arranged on the front end face of the wind chamber, the fan to be tested is arranged at the test port, and an auxiliary air supply duct is penetrated through the rear end face of the wind chamber; The flow stabilizing device is provided with two groups, which are respectively arranged at the two ends of the interior of the wind chamber and are used to stabilize the uniformity of the air volume in the wind chamber; A control device, arranged between the two flow stabilizing devices, and controlling the flow rate in the wind chamber according to the wind speed of the measured fan; Auxiliary air supply devices are respectively arranged in the air chamber and in the auxiliary air supply duct, and are used to stabilize the air volume in the air chamber when the wind force in the air chamber is insufficient; A flow regulating plate is arranged at the upper and lower parts inside the air chamber. The flow regulating plate is close to the test port and is used to adjust the size of the flow passing space. Flexible sealing belts are arranged around the flow regulating plate. One end of the sealing belt away from the flow regulating plate is connected to the inner wall of the air chamber, and the length of the sealing belt does not affect the position adjustment of the flow regulating plate.

[0007] By adopting the above technical scheme, the fan performance test system can accurately control the air volume in the wind chamber, ensure the stability of the test environment, and thus improve the accuracy and reliability of the test results; the design of the flow stabilization device makes the air volume distribution in the wind chamber more uniform, reduces local turbulence, and further improves the test accuracy; at the same time, the auxiliary air supply device can quickly supplement the air volume when the main air volume is insufficient, ensure the stability of the wind pressure during the entire test process, and avoid measurement errors caused by air volume fluctuations; the flow regulating plate can effectively adjust the size of the flow through space near the test port inside the wind chamber, thereby achieving precise control of the air inlet conditions of the fan under test and improving the accuracy and reliability of the test results.

[0008] Optionally, the auxiliary air supply device includes a first auxiliary fan, a second auxiliary fan and a combined frame, the first auxiliary fan is arranged in the auxiliary air supply duct, the combined frame is arranged in the air chamber away from the auxiliary air supply duct, and the second auxiliary fan is installed on the combined frame. When the air volume in the air chamber is weakened, the air volume is provided by the first auxiliary fan and the second auxiliary fan to keep the air volume in the air chamber stable.

[0009] By adopting the above technical solution, the auxiliary air supply device can quickly supplement the air volume when the main air volume is insufficient, that is, the first auxiliary fan blows air in the auxiliary air supply duct to provide the air flow in the air chamber. If the wind force is further insufficient, the second auxiliary fan is operated inside the air chamber to assist the tested fan to complete the entire flow test and ensure the stability of the wind pressure during the entire test process.

[0010] Optionally, the flow stabilizing device includes a flow stabilizing mesh plate and a positioning frame, the positioning frames are respectively fixedly connected to the inner walls of the wind chamber, the positioning frames are penetrated by a positioning groove, and the side surfaces of the flow stabilizing mesh plate are arranged in the positioning groove.

[0011] By adopting the above technical solution, the turbulence of the airflow in the wind chamber can be effectively reduced, and the uniformity and stability of the wind field can be improved, thereby ensuring that the tested fan obtains more accurate performance data during the test process.

[0012] Optionally, the control device includes a control baffle, a plurality of regulating sealing plates and a regulating motor, the control baffle being arranged in the air chamber, the control baffle being arranged between two of the flow stabilizing devices, the control baffle being penetrated by a plurality of flow holes, the plurality of flow holes being arranged at equal intervals, the regulating sealing plate being rotatably arranged at the orifice of the flow hole, the tail end of the regulating motor being arranged on the control baffle, a connecting plate being provided at the output end of the regulating motor, one end of the connecting plate being connected to one side of the end face of the regulating sealing plate for regulating the flow in the air chamber.

[0013] By adopting the above technical solution, the control device can accurately control the flow in the air chamber; specifically, the coordinated use of multiple flow holes on the control partition and the control sealing plate can achieve fine adjustment of the flow at different positions, ensuring the uniformity and stability of the air volume in the air chamber; the control motor drives the connecting plate to drive the control sealing plate to rotate, further improving the accuracy and response speed of flow regulation.

[0014] Optionally, a support seat is provided on one side of the wind chamber below the test port, and a bearing frame is slidably provided on the support seat, and the bearing frame is used to bear the wind turbine to be tested.

[0015] By adopting the above technical solution, the wind turbine under test can be quickly replaced and accurately positioned during the test; the design of the support base allows the bearing frame to flexibly adjust its position to accommodate wind turbines under test of different sizes.

[0016] Optionally, a bearing hole is provided through the middle of the bearing frame to carry the wind fan under test, a limiting ring is provided on the front end face of the bearing frame and corresponding to the port of the wind fan under test, positioning rods are provided through the four sides of the bearing frame, and limiting holes are provided around the wind chamber located at the test port, and the rod head of the positioning rod is inserted into the limiting hole.

[0017] By adopting the above technical solution, the bearing hole arranged through the middle of the bearing frame can stably support the wind fan under test; the limiting ring arranged on the front end face can effectively limit the position of the wind fan under test to prevent it from shifting during the test; the positioning rods arranged through the surrounding areas are used in conjunction with the limiting holes on the wind chamber to improve the positioning accuracy of the bearing frame.

[0018] Optionally, a locking device is further included, and several locking devices are provided. The locking device includes a fixed frame, a locking cylinder and a locking rod. The fixed frame is arranged on the air chamber at a side corresponding to the limiting hole, the tail end of the locking cylinder is arranged on the fixed frame, and a connecting block is arranged at the output end of the locking cylinder. The tail end of the locking rod is fixedly connected to the connecting block. Several locking holes are arranged through the outside of the positioning rod, and the rod head of the locking rod is inserted into one of the locking holes.

[0019] By adopting the above technical scheme, the locking device can ensure the stability of the support frame outside the wind room, prevent the measured wind turbine from shifting or falling off due to wind force, and improve the safety and accuracy of the test process; specifically, the locking cylinder can realize the telescopic action of the locking rod, so that the rod head of the locking rod can be accurately inserted into the locking hole on the positioning rod, thereby firmly fixing the support frame and avoiding unnecessary vibration and movement during the test; at the same time, the design of multiple locking devices enhances the stability of the system.

[0020] Optionally, flow regulating plates for regulating the flow through the space are arranged at the upper and lower parts of the air chamber near the test port, and flexible sealing belts are arranged around the flow regulating plate. One end of the sealing belt away from the flow regulating plate is connected to the inner wall of the air chamber, and the length of the sealing belt does not affect the position adjustment of the flow regulating plate.

[0021] By adopting the above technical solution, the flow regulating plate can effectively adjust the flow through the space near the test port inside the wind chamber, thereby realizing precise control of the air inlet conditions of the fan under test; at the same time, the design of the flexible sealing belt ensures the sealing between the flow regulating plate and the inner wall of the wind chamber during the adjustment process, thereby preventing the occurrence of air leakage.

[0022] Optionally, it also includes an adjustment device, which is used to adjust the flow adjustment plates in pairs. The adjustment device includes an adjustment seat, an adjustment cylinder and a mounting plate. The adjustment seat is arranged in the space formed by the flow adjustment plate and the sealing belt, and the adjustment seat is fixed to the upper and lower inner walls of the wind chamber. The tail end of the adjustment cylinder is fixedly connected to the adjustment seat, and a universal ball is arranged at the output end of the adjustment cylinder. The mounting plate is connected to the outer surface of the universal ball, and the end face of the mounting plate is connected to the rear end of the flow adjustment plate.

[0023] By adopting the above technical solution, the regulating device can accurately adjust the position of the flow regulating plate to ensure a more uniform airflow distribution in the air chamber; at the same time, the design of the universal ball enables the flow regulating plate to be flexibly adjusted in multiple directions to adapt to tested fans of different models and sizes, thereby enhancing the applicability of the system.

[0024] Optionally, a throttle valve is provided at the auxiliary air supply duct, and an air source connecting duct is provided on the air chamber to provide the required air volume in the air chamber.

[0025] By adopting the above technical solution, the throttle valve can accurately control the air volume in the auxiliary air supply duct to ensure stable wind pressure in the air chamber; the air source connecting pipe can stabilize the air volume supplied to the air chamber by the external air source equipment to ensure the continuity and stability of the test process.

[0026] A testing method for a fan performance testing system includes the following testing steps: Place the fan to be tested at the test port of the wind chamber and fix it; The wind source is transported into the wind chamber and the stability of the wind source is maintained during the transportation process. The wind flow passes through the flow stabilizing device to make the air volume in the wind chamber evenly distributed; Start the control device to adjust the flow rate in the air chamber in real time according to the wind speed of the measured fan; If the wind speed of the fan under test is weakened at a long distance, the auxiliary air supply device in the wind chamber can be started to assist the fan under test to complete the entire flow test, ensure the stability of the wind pressure during the entire test process, and avoid measurement errors caused by air volume fluctuations.

[0027] Record test data and analyze the performance parameters of the tested fan.

[0028] After the test is completed, turn off all equipment and remove the fan under test.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up two sets of flow stabilizing devices, the uniformity of the air volume in the air chamber can be significantly improved and the uneven air volume phenomenon can be reduced; the control device adjusts the flow rate in the air chamber in real time according to the wind speed of the fan under test, realizing precise control of the air volume and solving the problems of large fluctuations in air volume and unstable test results in the prior art; when the air volume in the air chamber is insufficient, the auxiliary air supply device provides additional air volume to ensure that the air volume in the air chamber is always stable, thereby improving the reliability and stability of the test; 2. The locking device effectively fixes the fan under test on the carrier through the cooperation of the locking rod and the locking hole to prevent it from shifting during the test, thus ensuring the safety and accuracy of the test process; 3. The design of the flow regulating plate and its sealing belt can adjust the flow through the space in the wind chamber as needed, making the air volume distribution more uniform, while reducing wind resistance, optimizing the air flow in the wind chamber, and improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a first-person three-dimensional view of a fan performance test system in this application.

[0031] Figure 2 It is a second perspective three-dimensional view of a fan performance test system in this application.

[0032] Figure 3 It is a structural schematic diagram of a fan performance testing system in this application.

[0033] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0034] Figure 5 It is a three-dimensional view of a control device of a fan performance test system in the present application.

[0035] In the figure: 1. air chamber; 11. test port; 12. auxiliary air supply duct; 13. support seat; 14. limit hole; 15. throttle valve; 16. air source connection duct; 2. flow stabilizing device; 21. flow stabilizing mesh plate; 22. positioning frame; 221. positioning groove; 3. control device; 31. control partition; 32. regulating sealing plate; 33. regulating motor; 34. flow through hole; 35. connecting plate; 4. auxiliary air supply device; 41. The first auxiliary fan; 42, the second auxiliary fan; 43, the combination frame; 5, the flow regulating plate; 51, the sealing belt; 6, the bearing frame; 61, the bearing hole; 62, the limiting ring; 63, the positioning rod; 64, the locking hole; 7, the locking device; 71, the fixing frame; 72, the locking cylinder; 73, the locking rod; 74, the connecting block; 8, the adjusting device; 81, the adjusting seat; 82, the adjusting cylinder; 83, the mounting plate; 84, the universal ball. DETAILED DESCRIPTION

[0036] The following is combined with the accompanying drawings Figure 1-Figure 5 This application is described in further detail.

[0037] Example 1, reference Figure 1-Figure 3 The embodiment of the present application discloses a fan performance testing system, including a wind chamber 1, a flow stabilizing device 2, a control device 3 and an auxiliary air supply device 4.

[0038] A test port 11 is provided on the front end face of the air chamber 1, and the fan to be tested is arranged at the test port 11. An auxiliary air supply duct 12 is provided through the rear end face of the air chamber 1; a plurality of groups of measuring sensors are provided in the air chamber 1 for controlling the flow rate, temperature and pressure; two groups of flow stabilizing devices 2 are provided, which are respectively provided at the two ends of the inside of the air chamber 1, and are used to stabilize the uniformity of the air volume in the air chamber 1; a control device 3 is provided between the two flow stabilizing devices 2, and the control device 3 controls the flow rate in the air chamber 1 according to the wind speed of the fan to be tested; an auxiliary air supply device 4 is provided at the air chamber 1, and the ... The auxiliary air supply device 4 is arranged in the air chamber 1 and in the auxiliary air supply duct 12, and is used to stabilize the air volume in the air chamber 1 when the wind force in the air chamber 1 is insufficient. The auxiliary air supply device 4 includes a first auxiliary fan 41, a second auxiliary fan 42 and a combination frame 43. The first auxiliary fan 41 is arranged in the auxiliary air supply duct 12, and the combination frame 43 is arranged in the air chamber 1 away from the auxiliary air supply duct 12. The second auxiliary fan 42 is installed on the combination frame 43. When the air volume in the air chamber 1 is weakened, the first auxiliary fan 41 and the second auxiliary fan 42 provide air volume to keep the air volume in the air chamber 1 stable.

[0039] The fan performance test system can accurately control the air volume in the wind chamber 1, ensure the stability of the test environment, and thus improve the accuracy and reliability of the test results; the design of the flow stabilizing device 2 makes the air volume distribution in the wind chamber 1 more uniform, reduces local turbulence, and further improves the test accuracy; at the same time, the auxiliary air supply device 4 can quickly supplement the air volume when the main air volume is insufficient, that is, the first auxiliary fan 41 blows air in the auxiliary air supply duct 12 to provide the air flow in the wind chamber 1. If the wind force is further insufficient, the second auxiliary fan 42 is operated inside the wind chamber 1 to assist the tested fan to complete the entire flow test, thereby ensuring the stability of the wind pressure during the entire test process and avoiding measurement errors caused by air volume fluctuations.

[0040] refer to Figure 3 In the present embodiment, more specifically, the flow stabilizing device 2 includes a flow stabilizing mesh plate 21 and a positioning frame 22. The positioning frames 22 are respectively fixedly connected to the inner wall of the wind chamber 1. The positioning frame 22 is penetrated by a positioning groove 221. The side of the flow stabilizing mesh plate 21 is arranged in the positioning groove 221, which can effectively reduce the turbulence of the airflow in the wind chamber 1 and improve the uniformity and stability of the wind field, thereby ensuring that the tested wind turbine obtains more accurate performance data during the test process.

[0041] refer to Figure 3 and Figure 5 In this embodiment, more specifically, the control device 3 includes a control baffle 31, a plurality of regulating sealing plates 32 and a regulating motor 33. The control baffle 31 is arranged in the air chamber 1, and the control baffle 31 is arranged between the two flow stabilizing devices 2. The control baffle 31 is penetrated by a plurality of flow through holes 34, and the plurality of flow through holes 34 are arranged at equal intervals. The regulating sealing plate 32 is rotatably arranged at the orifice of the flow through hole 34. The tail end of the regulating motor 33 is arranged on the control baffle 31, and a connecting plate 35 is arranged at the output end of the regulating motor 33. One end of the connecting plate 35 is connected to one side of the end face of the regulating sealing plate 32, and the regulating motor 33 is connected to the control baffle 31. In order to adjust the flow rate in the wind chamber 1, the control device 3 can accurately adjust the flow rate in the wind chamber 1; specifically, the coordinated use of multiple flow holes 34 on the control partition 31 and the regulating sealing plate 32 can realize fine adjustment of the flow rate at different positions, ensuring the uniformity and stability of the air volume in the wind chamber 1; the regulating motor 33 drives the connecting plate 35 to drive the regulating sealing plate 32 to rotate, further improving the accuracy and response speed of the flow rate regulation; this design not only improves the accuracy of the test system, but also enhances the adaptability of the system, and is suitable for the selection test of the wind speed corresponding to a variety of different models and specifications of the tested fans.

[0042] refer to Figure 3In the present embodiment, more specifically, a throttle valve 15 is provided at the auxiliary air supply duct 12, and an air source connecting duct 16 is provided on the air chamber 1 for providing the required air volume in the air chamber 1. The throttle valve 15 can accurately control the air volume in the auxiliary air supply duct 12 to ensure the stability of the wind pressure in the air chamber 1, thereby improving the accuracy and reliability of the test results; the air source connecting duct 16 can stabilize the air volume supplied to the air chamber 1 by the external air source equipment to ensure the continuity and stability of the test process.

[0043] The implementation principle of a fan performance testing system in an embodiment of the present application is as follows: by setting two groups of flow stabilizing devices 2 in the wind chamber 1 to balance the uniformity of the air volume, the stability and uniformity of the air volume during the test are ensured; the control device 3 adjusts the flow in the wind chamber 1 in real time according to the wind speed of the fan under test, to ensure the accuracy and reliability of the test results; when the air volume in the wind chamber 1 is insufficient, the auxiliary air supply device 4 provides additional air volume through the first auxiliary fan 41 and the second auxiliary fan 42, to further enhance the stability and flexibility of the system; this design not only improves the accuracy and efficiency of the test, but also extends the service life of the system and reduces maintenance costs.

[0044] Example 2, reference Figure 1 The difference between this embodiment and the first embodiment is that: a support seat 13 is arranged below the test port 11 on one side of the air chamber 1, and a carrier frame 6 is slidably arranged on the support seat 13. The carrier frame 6 is used to carry the wind turbine under test, which can realize the rapid replacement and precise positioning of the wind turbine under test during the test, thereby improving the test efficiency and accuracy; the design of the support seat 13 enables the carrier frame 6 to flexibly adjust its position to adapt to wind turbines under test of different sizes, thereby enhancing the applicability and flexibility of the system.

[0045] refer to Figure 1 and Figure 4 In the present embodiment, more specifically, a bearing hole 61 is provided through the middle of the bearing frame 6 to carry the wind turbine under test, a limiting ring 62 is provided at the positive end surface of the bearing frame 6 and at the port corresponding to the wind turbine under test, positioning rods 63 are provided through the four sides of the bearing frame 6, and limiting holes 14 are provided around the wind chamber 1 located at the test port 11, and the rod head of the positioning rod 63 is inserted into the limiting hole 14. The bearing hole 61 provided through the middle of the bearing frame 6 can stably carry the wind turbine under test to ensure stability during the test; the limiting ring 62 provided on the positive end surface can effectively limit the position of the wind turbine under test to prevent it from shifting during the test; the positioning rods 63 provided through the four sides are used in conjunction with the limiting holes 14 on the wind chamber 1 to further improve the positioning accuracy of the bearing frame 6 and ensure the consistency and reliability of the test environment.

[0046] refer to Figure 4In this embodiment, more specifically, a locking device 7 is further included. The locking device 7 is provided with a plurality of locking devices. The locking device 7 includes a fixing frame 71, a locking cylinder 72 and a locking rod 73. The fixing frame 71 is provided on the air chamber 1 at one side corresponding to the limiting hole 14. The tail end of the locking cylinder 72 is provided on the fixing frame 71. A connecting block 74 is provided at the output end of the locking cylinder 72. The tail end of the locking rod 73 is fixedly connected to the connecting block 74. A plurality of locking holes 64 are provided on the outside of the positioning rod 63. The rod head of the locking rod 73 is inserted into one of the locking holes 64. The locking device 7 can ensure the stability of the support frame 6 outside the wind chamber 1, prevent the measured wind turbine from shifting or falling off due to wind force, and improve the safety and accuracy of the test process; specifically, the locking cylinder 72 can realize the telescopic action of the locking rod 73, so that the rod head of the locking rod 73 is accurately inserted into the locking hole 64 on the positioning rod 63, thereby firmly fixing the support frame 6 to avoid unnecessary vibration and movement during the test; at the same time, the design of multiple locking devices 7 enhances the stability of the system and improves the reliability and repeatability of the test results.

[0047] Example 3, reference Figure 3 The difference between this embodiment and implementation one is that: a flow regulating plate 5 for regulating the size of the flow passage space is arranged at the upper and lower parts of the interior of the air chamber 1 near the test port 11, and a flexible sealing belt 51 is arranged on all four sides of the flow regulating plate 5. The end of the sealing belt 51 away from the flow regulating plate 5 is connected to the inner wall of the air chamber 1, and the length of the sealing belt 51 does not affect the position adjustment of the flow regulating plate 5. The flow regulating plate 5 can effectively adjust the size of the flow passage space near the test port 11 inside the air chamber 1, thereby realizing precise control of the air inlet conditions of the tested fan and improving the accuracy and reliability of the test results; at the same time, the design of the flexible sealing belt 51 ensures the sealing between the flow regulating plate 5 and the inner wall of the air chamber 1 during the adjustment process, prevents the occurrence of air leakage, and further ensures the stability of the test environment.

[0048] refer to Figure 3In this embodiment, more specifically, it also includes an adjusting device 8, which is used for adjusting the flow regulating plates 5 in pairs. The adjusting device 8 includes an adjusting seat 81, an adjusting cylinder 82 and a mounting plate 83. The adjusting seat 81 is arranged in the space formed by the flow regulating plate 5 and the sealing belt 51, and the adjusting seat 81 is fixed to the upper and lower inner walls of the wind chamber 1. The tail end of the adjusting cylinder 82 is fixedly connected to the adjusting seat 81. A universal ball 84 is arranged at the output end of the adjusting cylinder 82. The mounting plate 83 is connected to the outer surface of the universal ball 84, and the end face of the mounting plate 83 is connected to the rear end of the flow regulating plate 5. The adjusting device 8 can accurately adjust the position of the flow regulating plate 5 to ensure that the airflow distribution in the wind chamber 1 is more uniform, thereby improving the accuracy and reliability of the test results; at the same time, the design of the universal ball 84 enables the flow regulating plate 5 to be flexibly adjusted in multiple directions to adapt to the tested fans of different models and sizes, thereby enhancing the applicability of the system.

[0049] Embodiment 4, a testing method of a fan performance testing system, comprising the following testing steps: Place the fan to be tested at the test port 11 of the wind chamber 1 and fix it; The wind source is transported into the wind chamber 1, and the stability of the wind source during the transportation process is maintained. The wind flow passes through the flow stabilizing device 2, so that the air volume in the wind chamber 1 is evenly distributed; Start the control device 3 to adjust the flow rate in the wind chamber 1 in real time according to the wind speed of the measured fan; If the wind speed of the tested fan is weakened at a long distance, the auxiliary air supply device 4 in the wind chamber 1 can be started, that is, the first auxiliary fan 41 blows air in the auxiliary air supply duct 12 to provide the air flow of the wind chamber 1. If the wind force is further insufficient, the second auxiliary fan 42 is operated inside the wind chamber 1 to assist the tested fan to complete the entire flow test, ensure the stability of the wind pressure during the entire test process, and avoid measurement errors caused by wind volume fluctuations; Record test data and analyze the performance parameters of the tested fan; After the test is completed, turn off all equipment and remove the fan under test.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fan performance test system, characterized in that: include: A wind chamber (1), wherein a test port (11) is provided on a front end surface of the wind chamber (1), a wind fan to be tested is provided at the test port (11), and an auxiliary air supply duct (12) is provided through a rear end surface of the wind chamber (1); The flow stabilizing device (2) comprises two groups, which are respectively arranged at two ends of the interior of the wind chamber (1) and are used to stabilize the uniformity of the air volume in the wind chamber (1); A control device (3) is arranged between the two flow stabilizing devices (2), and the control device (3) controls the flow rate in the wind chamber (1) according to the wind speed of the wind fan being measured; An auxiliary air supply device (4) is disposed in the air chamber (1) and in the auxiliary air supply duct (12), and is used to stabilize the air volume in the air chamber (1) when the wind force in the air chamber (1) is insufficient; A flow regulating plate (5) is arranged at the upper and lower parts of the wind chamber (1), the flow regulating plate (5) being close to the test port (11) and used for regulating the size of the flow passing space, a flexible sealing belt (51) is arranged around the flow regulating plate (5), one end of the sealing belt (51) away from the flow regulating plate (5) is connected to the inner wall of the wind chamber (1), and the length of the sealing belt (51) does not affect the position adjustment of the flow regulating plate (5).

2. A fan performance test system according to claim 1, characterized in that: The auxiliary air supply device (4) comprises a first auxiliary fan (41), a second auxiliary fan (42) and a combination frame (43); the first auxiliary fan (41) is arranged in the auxiliary air supply duct (12); the combination frame (43) is arranged in the air chamber (1) away from the auxiliary air supply duct (12); the second auxiliary fan (42) is mounted on the combination frame (43); when the air volume in the air chamber (1) decreases, the first auxiliary fan (41) and the second auxiliary fan (42) provide air volume to keep the air volume in the air chamber (1) stable.

3. A fan performance testing system according to claim 1, characterized in that: The flow stabilizing device (2) comprises a flow stabilizing mesh plate (21) and a positioning frame (22), wherein the positioning frames (22) are respectively fixedly connected to the inner wall of the wind chamber (1), and the positioning frame (22) is provided with a positioning groove (221) running through it, and the side surface of the flow stabilizing mesh plate (21) is arranged in the positioning groove (221).

4. A fan performance test system according to claim 1, characterized in that: The control device (3) comprises a control baffle (31), a plurality of regulating sealing plates (32) and a regulating motor (33); the control baffle (31) is arranged in the wind chamber (1); the control baffle (31) is arranged between two of the flow stabilizing devices (2); a plurality of flow through holes (34) are arranged through the control baffle (31); the plurality of flow through holes (34) are arranged at equal intervals; the regulating sealing plate (32) is rotatably arranged at the orifice of the flow through hole (34); the tail end of the regulating motor (33) is arranged on the control baffle (31); a connecting plate (35) is arranged at the output end of the regulating motor (33); one end of the connecting plate (35) is connected to one side of the end face of the regulating sealing plate (32) for regulating the flow in the wind chamber (1).

5. A fan performance test system according to claim 1, characterized in that: A support seat (13) is provided on one side of the wind chamber (1) below the test port (11), and a bearing frame (6) is slidably provided on the support seat (13), and the bearing frame (6) is used to bear the wind turbine to be tested.

6. A fan performance test system according to claim 5, characterized in that: A bearing hole (61) is provided through the middle of the bearing frame (6) to bear the wind turbine to be tested, a limiting ring (62) is provided at the front end surface of the bearing frame (6) and at the port corresponding to the wind turbine to be tested, positioning rods (63) are provided through the four sides of the bearing frame (6), and limiting holes (14) are provided around the wind chamber (1) located at the test port (11), and the rod head of the positioning rod (63) is inserted into the limiting hole (14).

7. A fan performance test system according to claim 6, characterized in that: The invention also comprises a locking device (7), wherein a plurality of locking devices (7) are provided, and the locking device (7) comprises a fixing frame (71), a locking cylinder (72) and a locking rod (73); the fixing frame (71) is provided on the air chamber (1) at a side corresponding to the limiting hole (14); the tail end of the locking cylinder (72) is provided on the fixing frame (71); a connecting block (74) is provided at the output end of the locking cylinder (72); the tail end of the locking rod (73) is fixedly connected to the connecting block (74); a plurality of locking holes (64) are provided on the outside of the positioning rod (63); and the rod head of the locking rod (73) is inserted into one of the locking holes (64).

8. A fan performance testing system according to claim 1, characterized in that: It also includes an adjusting device (8), which is used to adjust the flow regulating plates (5) in pairs. The adjusting device (8) includes an adjusting seat (81), an adjusting cylinder (82) and a mounting plate (83). The adjusting seat (81) is arranged in a space formed by the flow regulating plate (5) and the sealing belt (51), and the adjusting seat (81) is fixed to the upper and lower inner walls of the wind chamber (1). The tail end of the adjusting cylinder (82) is fixedly connected to the adjusting seat (81). A universal ball (84) is arranged at the output end of the adjusting cylinder (82). The mounting plate (83) is connected to the outer surface of the universal ball (84), and the end face of the mounting plate (83) is connected to the rear end of the flow regulating plate (5).

9. A fan performance test system according to claim 1, characterized in that: The auxiliary air supply duct (12) is provided with a throttle valve (15), and the air chamber (1) is provided with an air source connecting duct (16) for providing the required air volume in the air chamber (1).

10. A method for testing a fan performance test system according to claims 1 to 9, characterized in that: The test steps include: The fan to be tested is placed at the test port (11) of the wind chamber (1) and fixed; The wind source is transported into the wind chamber (1), and the stability of the wind source during the transport process is maintained. The wind flow passes through the flow stabilizing device (2), so that the wind volume in the wind chamber (1) is evenly distributed; The control device (3) is started to adjust the flow rate in the wind chamber (1) in real time according to the wind speed of the fan under test; if the wind speed of the fan under test is weakened at a long distance, the auxiliary air supply device (4) in the wind chamber (1) can be started to assist the fan under test to complete the entire flow rate test, thereby ensuring the stability of the wind pressure during the entire test process and avoiding measurement errors caused by wind volume fluctuations; Record test data and analyze the performance parameters of the tested fan; After the test is completed, turn off all equipment and remove the fan under test.

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