Fan performance testing equipment

Abstract

The utility model relates to the technical field of fan testing, and provides fan performance testing equipment, which comprises a box body, an air valve, an air pressure sensor and a flow sensor, and is characterized in that the box body is provided with an air inlet, an air outlet and an air duct, the air duct is connected with the air inlet and the air outlet, and the air inlet is configured to install a fan to be tested; the air valve is arranged between the first section and the second section of the air duct, and the air valve is configured to be capable of adjusting the opening degree so as to control the ventilation area between the first section and the second section; the two detection ends of the air pressure sensor are arranged on the first section and the second section of the air channel respectively so as to detect the pressure difference of the two sides of the air valve under different opening degrees. The flow sensor is arranged at the air outlet to detect the air outlet flow of the air outlet. The opening degree of the air valve is switched, and the corresponding air pressure and air volume under each opening degree are tested by means of the air pressure sensor and the flow sensor, so that the performance parameters of the fan to be tested are verified, the test environment requirement is low, and the test efficiency of the fan performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine testing technology, and in particular to a wind turbine performance testing device. Background Technology

[0002] Domain controllers have high power consumption in their main chips, and traditional passive cooling methods are no longer sufficient to meet their cooling requirements. Air cooling is necessary to increase the domain controller's heat dissipation efficiency. To ensure the proper functioning of the domain controller's cooling system, it is essential to measure the key performance parameters of the fan.

[0003] Currently, wind tunnel testing is the most common method for testing wind turbines. In a wind tunnel environment, anemometers and barometers are placed at specific locations away from the wind turbine's outlet. The barometer measures the wind pressure, and the anemometer readings are used to calculate the airflow. However, this method requires a specialized laboratory, has high requirements for the testing environment, and is inefficient. Users cannot quickly test critical wind turbine parameters, making it difficult to detect malfunctions. Utility Model Content

[0004] This invention provides a wind turbine performance testing device to solve the problems of high requirements for the testing environment and low testing efficiency in current wind turbine performance parameter testing.

[0005] This utility model provides a wind turbine performance testing device, comprising:

[0006] The housing has an air inlet, an air outlet, and an air duct, the air duct connecting the air inlet and the air outlet, and the air inlet being configured to install the fan under test;

[0007] An air valve is disposed between the first and second sections of the air duct, and the air valve is configured to be adjustable in opening to control the ventilation area between the first and second sections.

[0008] A wind pressure sensor, with its two detection terminals located in the first and second sections of the air duct, is used to detect the pressure difference across the air valve at different opening degrees.

[0009] A flow sensor is installed at the air outlet to detect the air flow rate at the air outlet.

[0010] According to the fan performance testing equipment provided by this utility model, the air outlet area gradually decreases along the air outlet direction of the air duct.

[0011] According to the present invention, a fan performance testing device is provided, wherein the flow sensor comprises a plurality of flow sensors, which are distributed at circumferential intervals along the air outlet.

[0012] According to the present invention, a fan performance testing device further includes a flow equalization element, which is disposed in the air duct and located between the air inlet and the air valve. The flow equalization element is arranged perpendicular to the extension direction of the air duct.

[0013] According to the fan performance testing equipment provided by this utility model, the distance between the flow equalization element and the air inlet along the extension direction of the air duct is 80mm~120mm.

[0014] According to the present invention, a fan performance testing device is provided, wherein the housing is provided with a mounting groove that extends circumferentially along the air inlet, and the mounting groove is used to install the fan under test.

[0015] According to the present invention, a fan performance testing device further includes a sealing element, which is used to seal the gap between the fan under test and the mounting groove.

[0016] According to the present invention, a wind turbine performance testing device further includes a test host located outside the housing. The test host is configured to communicate with the wind turbine under test to drive the wind turbine under test to rotate and control the speed of the wind turbine under test.

[0017] According to the present invention, a fan performance testing device is provided, wherein the air valve includes a drive motor and a baffle.

[0018] The drive motor is located outside the housing, and the baffle is located in the air duct. The drive motor and the baffle are connected to drive the baffle to rotate.

[0019] According to the present invention, a fan performance testing device is provided, wherein there are multiple air valves, and the baffles corresponding to the multiple air valves are arranged side by side along the extension direction perpendicular to the air duct.

[0020] This invention provides a fan performance testing device. The air valve can adjust its opening to control the ventilation area between the first and second sections. A wind pressure sensor measures the pressure difference between the first and second sections to obtain the air pressure in the duct at the current opening. A flow sensor is installed at the air outlet to measure the corresponding air flow rate. During the test, by switching the opening of the air valve, the wind pressure and flow sensor are used to test the corresponding air pressure and air volume at each opening, thereby verifying the performance parameters of the fan under test. The device can quickly test the performance parameters of the fan without the need for a harsh wind tunnel environment, has low requirements for the testing environment, and improves the testing efficiency of fan performance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the wind turbine performance testing equipment provided by this utility model.

[0023] Figure 2 This is one of the partial structural schematic diagrams of the wind turbine performance testing equipment provided by this utility model.

[0024] Figure 3 This is the second partial structural schematic diagram of the wind turbine performance testing equipment provided by this utility model.

[0025] Figure 4 This is the third partial structural schematic diagram of the wind turbine performance testing equipment provided by this utility model.

[0026] Figure 5 This is the fourth partial structural schematic diagram of the wind turbine performance testing equipment provided by this utility model.

[0027] Figure label:

[0028] 1. Housing; 11. Air inlet; 12. Air outlet; 13. Air duct; 131. First section; 132. Second section; 14. Mounting slot;

[0029] 2. Air valve; 21. Drive motor; 22. Baffle; 3. Air pressure sensor; 4. Flow sensor; 5. Flow equalization component; 6. Test host; 100. Fan under test. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following is combined Figures 1-5 The present invention provides a detailed description of a wind turbine performance testing device through specific embodiments and application scenarios.

[0035] like Figure 1 As shown, this utility model provides a fan performance testing device, including: a housing 1, a wind valve 2, a wind pressure sensor 3, and a flow sensor 4;

[0036] The housing 1 has an air inlet 11, an air outlet 12, and an air duct 13, which connects the air inlet 11 and the air outlet 12. The air inlet 11 is configured to install a fan under test 100, which can be an axial flow fan or a centrifugal fan. An air valve 2 is located between the first section 131 and the second section 132 of the air duct 13. The air valve 2 is configured to be adjustable in opening to control the ventilation area between the first section 131 and the second section 132. The two detection ends of the air pressure sensor 3 are respectively located in the first section 131 and the second section 132 of the air duct 13 to detect the pressure difference on both sides of the air valve 2 at different opening degrees. A flow sensor 4 is located at the air outlet 12 to detect the air flow rate at the air outlet 12.

[0037] Specifically, such as Figure 1 As shown, the housing 1 is elongated. An air inlet 11 and an air outlet 12 are located at opposite ends of the housing 1. The housing 1 includes a main body and a cover. An air valve 2, an air pressure sensor 3, and a flow sensor 4 are all housed within the main body. The cover covers the main body for quick installation or removal of components. The air inlet 11 is located on the cover, and the air outlet 12 is located at the bottom of the main body. Optionally, the air inlet 11 and the air outlet 12 are arranged opposite each other to form an axial flow duct 13 within the housing 1.

[0038] The fan under test 100 is fixedly installed at the air inlet 11, and the air outlet 12 of the fan under test 100 faces the interior of the housing 1. Figure 1 As shown, the air duct 13 has a first section 131 and a second stage, with the air valve 2 located between the first section 131 and the second stage. During the fan performance test, by adjusting the opening of the air valve 2, the ventilation area between the first section 131 and the second section 132 is changed, thereby changing the air pressure between the first section 131 and the second section 132.

[0039] like Figure 1 As shown, the wind pressure sensor 3 is installed on the inner wall of the housing 1, and the two detection ends of the wind pressure sensor 3 are respectively located in the first section 131 and the second stage, thereby measuring the pressure difference between the first section 131 and the second stage under different opening degrees of the air valve 2, and thus measuring the wind pressure. Optionally, the wind pressure sensor 3 is a differential pressure sensor.

[0040] like Figure 2 As shown, the flow sensor 4 is fixed to the air outlet 12 to detect the air flow rate at the air outlet 12. Optionally, the flow sensor 4 can be a differential pressure flow sensor or a flow meter. By measuring the air pressure between the first section 131 and the second section 132 of the damper 2 at different opening degrees and the corresponding air flow rate at the air outlet 12, the PQ parameter curve of the fan can be obtained. By comparing the tested PQ parameter curve with the standard PQ parameter curve of the fan, it can be determined whether the fan performance is good.

[0041] For example, when the opening of damper 2 is zero, that is, when the first section 131 and the second stage are not connected, the air pressure in the duct 13 is at its maximum, and the airflow at the outlet 12 is 0. The measurement value of the air pressure sensor 3 is the air pressure of the fan. When the opening of damper 2 is adjusted to its maximum, the pressure difference between the first section 131 and the second section 132 is 0, and the airflow at the outlet 12 is at its maximum. The current measurement value of the flow sensor 4 is the airflow of the fan. By switching the opening of damper 2 and using the air pressure sensor 3 and the flow sensor 4 to test the corresponding air pressure and airflow at each opening, the PQ parameter curve of the fan under test 100 can be obtained, thereby verifying the performance parameters of the fan under test 100.

[0042] This invention provides a fan performance testing device. The air valve 2 can adjust its opening to control the ventilation area between the first section 131 and the second section 132. The air pressure sensor 3 measures the pressure difference between the first section 131 and the second section 132 to obtain the air pressure in the air duct 13 at the current opening. The flow sensor 4 is located at the air outlet 12 to measure the corresponding air flow at the air outlet 12. During the test, by switching the opening of the air valve 2, the air pressure and air volume at each opening are tested with the help of the air pressure sensor 3 and the flow sensor 4, thereby realizing the verification of the performance parameters of the fan 100 under test. The fan can be quickly tested without a harsh wind tunnel environment, the test environment requirements are low, and the testing efficiency of the fan performance is improved.

[0043] In some embodiments, such as Figure 2 As shown, the air outlet area of ​​the air outlet 12 gradually decreases along the air outlet direction of the air duct 13. The inner end of the air outlet 12 has the largest size, while the outer end has a smaller size. Optionally, the air outlet 12 can be frustum-shaped or frustum-cone-shaped. The air blown by the fan under test 100 flows along the extension direction of the air duct 13 and from the inner end of the air outlet 12 to the outer end. As the air outlet area of ​​the air outlet 12 gradually decreases along the air outlet direction, the air in the air duct 13 can quickly converge to the air outlet 12.

[0044] The flow sensor 4 is installed on the wall of the air outlet 12. Since the air outlet area of ​​the air outlet 12 gradually decreases along the air outlet direction of the air duct 13, the wall of the air outlet 12 and the air outlet direction of the air duct 13 form a certain angle, so that the flow sensor 4 can accurately measure the air flow of the air outlet 12 and improve the accuracy of the fan measurement.

[0045] In some embodiments, such as Figure 2 As shown, there are multiple flow sensors 4. The multiple flow sensors 4 are distributed at circumferential intervals along the air outlet 12.

[0046] Multiple flow sensors 4 are installed at different positions on the air outlet 12. Preferably, the multiple flow sensors 4 are evenly distributed in the circular or annular circumference of the air outlet 12 to detect changes in the air flow rate of the air outlet 12 without blind spots, thereby improving the accuracy of the air volume measurement of the fan 100 under test.

[0047] Optional, such as Figure 2 As shown, there are four flow sensors 4, which are evenly distributed around the circumference of the air outlet 12. The angle between each flow sensor 4 and its adjacent flow sensor 4 is 90°. Each flow sensor 4 forms a certain angle with the central axis of the air outlet 12 to accurately capture the changes in airflow at different locations within the air outlet 12 area. The number of flow sensors 4 can also be two, three, or five, etc., and this invention does not specifically limit this.

[0048] In some embodiments, such as Figure 1 and Figure 3 As shown, the fan performance testing equipment also includes a flow equalization component 5. The flow equalization component 5 is located within the air duct 13, between the air inlet 11 and the air valve 2. The flow equalization component 5 is used to control the uniform flow of air within the air duct 13. The flow equalization component 5 and the air duct 13 are arranged perpendicularly to each other.

[0049] Specifically, such as Figure 1 As shown, the flow equalization element 5 is located in the first section 131 of the air duct 13. Optionally, the flow equalization element 5 is a perforated plate or a filter screen. The flow equalization element 5 is positioned at a certain distance from the air inlet 11, and the flow equalization element 5 is perpendicular to the extension direction of the air duct 13, so that the air blown by the fan 100 under test is dispersed by the flow equalization element 5, so that the air flows evenly to the air valve 2 and the air outlet 12, avoiding the impact of air accumulation in certain areas on the accuracy of air pressure and air volume measurement, and improving measurement accuracy.

[0050] Optionally, the distance between the flow equalization element 5 and the air inlet 11 along the extension direction of the air duct 13 is 80mm~120mm, so as to ensure the air dispersion effect of the flow equalization element 5.

[0051] The distance between the flow equalization component 5 and the air inlet 11 can be 80mm, 90mm, 100mm, 110mm, or 120mm. Preferably, the distance between the flow equalization component 5 and the air inlet 11 is 100mm to ensure that the flow equalization component 5 achieves the best air dispersion effect.

[0052] In some embodiments, such as Figure 3 As shown, the housing 1 is provided with a mounting slot 14. The mounting slot 14 extends circumferentially along the air inlet 11. The mounting slot 14 is used to mount the fan 100 under test.

[0053] Specifically, the outer wall of the cover plate is recessed inward to form a mounting groove 14. The air inlet 11 is located at the bottom of the mounting groove 14. During testing, the fan under test 100 is inserted into the mounting groove 14, and the air outlet 12 and air inlet 11 of the fan under test 100 are aligned to complete the fixation of the fan under test 100, which is highly convenient.

[0054] In other embodiments, the bottom of the mounting groove 14 is provided with multiple positioning posts. These positioning posts are spaced apart circumferentially along the air inlet 11. Correspondingly, the fan under test 100 has multiple positioning holes. During testing, the fan under test 100 is inserted into the mounting groove 14, and the multiple positioning posts are inserted one-to-one into the multiple positioning holes to further ensure the stability of the fan under test 100 installation.

[0055] Furthermore, in some embodiments, the fan performance testing equipment further includes a seal. The seal is used to seal the gap between the fan under test 100 and the mounting groove 14 to improve the airtightness of the housing 1, prevent the air blown by the fan under test 100 from leaking to the outside through the gap between the fan under test 100 and the mounting groove 14, thereby ensuring the accuracy of the measurements by the wind pressure sensor 3 and the flow sensor 4, and improving the accuracy of the fan performance test.

[0056] Optionally, the sealant can be putty or a rubber ring.

[0057] In some embodiments, such as Figure 1 As shown, the wind turbine performance testing equipment also includes a test host 6. The test host 6 is located outside the housing 1. The test host 6 is configured to communicate with the wind turbine under test 100 to drive the wind turbine under test 100 to rotate and control the speed of the wind turbine under test 100.

[0058] Specifically, the test host 6 is communicatively connected to the fan under test 100 via a wiring harness. The test host 6 provides power to the fan under test 100 to drive its rotation, and simultaneously sends PWM signals to control its speed, ensuring the effective execution of the test. The test host 6 records the fan under test 100's speed and measures the air pressure and airflow at the corresponding speed using the air pressure sensor 3 and flow sensor 4, providing a reference for users to verify the PQ parameter curve of the fan under test 100.

[0059] In some embodiments, such as Figure 4 and 5 As shown, the air valve 2 includes a drive motor 21 and a baffle 22. The drive motor 21 is located outside the housing 1. The baffle 22 is located in the air duct 13. The drive motor 21 and the baffle 22 are connected to drive the baffle 22 to rotate.

[0060] Specifically, the drive motor 21 is fixed to the side wall of the housing 1. The drive end of the drive motor 21 passes through the side wall of the housing 1 and is connected to the baffle 22 to drive the baffle 22 to rotate, thereby adjusting the opening degree of the air valve 2. Optionally, the drive motor 21 is a stepper motor or a servo motor.

[0061] For example, such as Figure 4 As shown, when the drive motor 21 drives the baffle 22 to rotate until the baffle 22 is perpendicular to the extension direction of the air duct 13, the air valve 2 is in a closed state, that is, the opening degree of the air valve 2 is zero; Figure 5 As shown, when the drive motor 21 drives the baffle 22 to rotate until the baffle 22 is parallel to the extension direction of the air duct 13, the opening of the air valve 2 reaches its maximum.

[0062] In some embodiments, such as Figure 4 and 5 As shown, there are multiple air valves 2. The baffles 22 corresponding to the multiple air valves 2 are arranged side by side along the extension direction perpendicular to the air duct 13.

[0063] The specific structure of the damper 2 in this embodiment is the same as that in the previous embodiment, and will not be described again here. Multiple dampers 2 are arranged side-by-side within the cross-section of the duct 13. The multiple dampers 2 are arranged at certain intervals along the width direction of the duct 13. Each damper 2 can be independently adjusted in opening, allowing the user to precisely adjust the ventilation area between the first section 131 and the second section 132 according to requirements, thereby achieving different air pressure control effects and ensuring the accuracy of fan performance testing.

[0064] Optionally, the number of dampers 2 can be three, four, or six. The number of dampers 2 can be increased or decreased according to the width of the air duct 13, and there is no specific limitation on this.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fan performance testing apparatus, characterized by, include: The housing has an air inlet, an air outlet, and an air duct, the air duct connecting the air inlet and the air outlet, and the air inlet being configured to install the fan under test; An air valve is disposed between the first and second sections of the air duct, and the air valve is configured to be adjustable in opening to control the ventilation area between the first and second sections. A wind pressure sensor, with its two detection terminals located in the first and second sections of the air duct, is used to detect the pressure difference across the air valve at different opening degrees. A flow sensor is installed at the air outlet to detect the air flow rate at the air outlet.

2. The fan performance testing apparatus of claim 1, wherein, The air outlet area gradually decreases along the air outlet direction of the air duct.

3. The fan performance testing apparatus of claim 2, wherein, The flow sensor is a plurality of such sensors, which are distributed at circumferential intervals along the air outlet.

4. The fan performance testing apparatus of claim 1, wherein, It also includes a flow equalization component, which is disposed in the air duct and located between the air inlet and the air valve. The flow equalization component is perpendicular to the extension direction of the air duct.

5. The fan performance testing apparatus of claim 4, wherein, Along the extension direction of the air duct, the distance between the flow equalization element and the air inlet is 80mm~120mm.

6. The fan performance testing apparatus of claim 1, wherein, The housing is provided with a mounting slot that extends circumferentially along the air inlet and is used to mount the fan under test.

7. The fan performance testing apparatus of claim 6, wherein, Also includes: A sealing element for sealing the gap between the fan under test and the mounting groove.

8. The fan performance testing apparatus of claim 1, wherein, It also includes a test host located outside the enclosure. The test host is configured to communicate with the fan under test to drive the fan under test to rotate and control the speed of the fan under test.

9. The fan performance testing apparatus of claim 1, wherein, The air valve includes a drive motor and a baffle. The drive motor is located outside the housing, and the baffle is located in the air duct. The drive motor and the baffle are connected to drive the baffle to rotate.

10. The fan performance testing apparatus of claim 9, wherein, The air valve has multiple valves, and the baffles corresponding to the multiple air valves are arranged side by side along the extension direction perpendicular to the air duct.

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