Horizontal flow fan and wind environment simulation system thereof

Abstract

The invention relates to the technical field of axial flow fans and wind tunnel simulation, in particular to a horizontal flow fan which comprises an air duct, a motor body and a plurality of blades, the motor body is installed in the air duct, the blades are evenly arranged in the circumferential direction of an output shaft of the motor body at intervals, and the blades are bent and swept combined orthogonal three-dimensional twisted blades. The forward bending angle of each blade is 10-14 degrees, the forward sweeping angle of each blade is 16-22 degrees, the twisting angle of each blade is 25-35 degrees, the number of the blades is 2N, N is larger than or equal to 5 and smaller than or equal to 10, airflow can enter and flow out of the impeller more stably through the bending and sweeping combined orthogonal three-dimensional twisted blades, airflow disturbance and noise sources are reduced, and efficiency is high. In addition, the invention further discloses a wind environment simulation system applying the horizontal flow fan, a closed and ideal flow environment is formed in the test chamber through the cooperation of the horizontal flow fan and the test chamber, and the simulation requirements of various complex wind environments are effectively met in a limited space range.

Description

Technical Field

[0001] The present application relates to the technical field of axial flow fans and wind tunnel simulation, and in particular to a horizontal flow fan and a wind environment simulation system thereof. Background Art

[0002] The structure of a horizontal flow fan (axial flow fan) used in wind tunnel testing mainly includes an air inlet, air outlet, motor, fan impeller, and specific piping and structural design. Its main function in wind tunnel testing is to drive the fan impeller to rotate through the motor, generating high-speed airflow, simulating the air flow conditions under different wind speeds and wind directions in the actual environment, thereby testing the aerodynamic performance of various objects. The fan impeller of a horizontal flow fan is directly connected to the rotor and rotates outside the stator, integrating the impeller and motor into one. This structure has the advantages of compact design and easy spatial arrangement. However, with the increase in industrial demand, the fan speed is getting higher and higher. However, the higher the speed of the horizontal flow fan, the greater the noise, and the higher the requirements for the motor. This shortens the life of the fan bearing and gradually increases the fan failure rate.

[0003] In response to the above problems, researchers have optimized the structure of horizontal flow fans to improve their performance. For example, the patent with publication number CN214533699U discloses an axial flow fan impeller and an axial flow fan, wherein the axial flow fan impeller includes a mounting disk and blades arranged on the mounting disk; the mounting disk is used to be connected to a rotating shaft; the blades are arranged on the outer wall of the mounting disk and are evenly arranged with the axis of the mounting disk as the center, and the number of the blades is between 13 and 45. The axial flow fan impeller reduces the noise of the axial flow fan during operation by setting the number of blades, and can enable the axial flow fan to operate at a higher speed and maintain lower noise. For example, the patent with publication number CN104481898A discloses an outer rotor axial flow fan using an electromagnetic bearing, which includes a cylindrical shell, a support frame, an axial flow fan impeller and an outer rotor motor. The axial flow fan impeller and the outer rotor motor are placed in the cavity of the cylindrical shell, the support frame is located at the air outlet of the cylindrical shell and the support frame is fixedly connected to the cylindrical shell; the outer rotor motor includes a motor shell, a first radial electromagnetic bearing, a second radial electromagnetic bearing, a permanent magnet, a stator core, an axial electromagnetic bearing and a stator shaft. The first radial electromagnetic bearing, the second radial electromagnetic bearing, the permanent magnet, the stator core, the axial electromagnetic bearing and the stator shaft are placed in the motor shell. The fan can change the stiffness of the electromagnetic bearing by controlling the electromagnetic force between the stator and rotor of each electromagnetic bearing, thereby actively changing the natural frequency of the axial flow fan impeller, effectively avoiding the occurrence of system resonance, so that the fan can run smoothly at all operating speeds, and greatly improve the bearing life and reduce mechanical loss.

[0004] However, the above-mentioned axial flow fan impeller and axial flow fan reduce noise by adding fan blades, which will reduce the flow rate of the fan. The flow rate is 276m 3 The aforementioned external rotor axial flow fan, equipped with multiple permanent magnets and electromagnetic bearings, increases its weight and volume, failing to meet the lightweight and high-flow requirements of horizontal flow fan arrays used in high-precision wind tunnel testing. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a horizontal flow fan and a wind environment simulation system thereof, which can meet at least one index requirement of wind speed in a wind field in a high-precision wind tunnel test.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A horizontal flow fan comprises a wind tube, a motor body and a plurality of blades. The motor body is installed in the wind tube. The plurality of blades are evenly spaced along the circumference of the output shaft of the motor body. The blades are orthogonal three-dimensional twisted blades with a combined bend and sweep. The blades have a forward bend angle of 10°-14°, a forward sweep angle of 16°-22°, a twist angle of 25°-35°, and a number of blades of 2N, with 5≤N≤10.

[0008] Preferably, the forward bending angle is 12°, the forward sweep angle is 19°, the twist angle is 30°, and the number of blades is 16.

[0009] Preferably, it also includes a guide tube and a guide cone, the guide tube is installed at the air outlet port of the air duct, and the guide cone is connected to the motor body and is located in the guide tube.

[0010] Preferably, the guide cone is in the shape of a bullet, and the volume ratio of the guide cone to the volume of the guide tube is 1:3.

[0011] Preferably, it also includes a mounting seat, which is arranged on the outside of the wind tube, and the mounting seat is provided with a penetrating mounting groove.

[0012] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0013] The high-speed permanent magnet synchronous motor utilizes optimized blade curvature and sweep design, along with orthogonal three-dimensional twisting technology, to improve blade-airflow interaction, reduce energy loss, and achieve a 5%-10% increase in efficiency compared to conventional designs. The combination of curved and swept blades and orthogonal three-dimensional twisting ensures smoother airflow in and out of the impeller, reducing airflow disturbances and noise sources. An even number of blades minimizes radial force imbalance and improves output airflow stability.

[0014] Another object of the present invention is to provide a wind environment simulation system using a horizontal flow fan, which can effectively meet the simulation needs of various complex wind environments by using the horizontal flow fan.

[0015] To achieve the above object, the present invention adopts the following technical solutions:

[0016] A wind environment simulation system using horizontal flow fans comprises a horizontal flow fan, a fan bracket and a test chamber. A plurality of horizontal flow fans are arranged in an array in the fan bracket, and the fan bracket is arranged on an inner wall of the test chamber.

[0017] Preferably, the fan bracket has fifteen fan installation frames in a row in the horizontal direction and twelve fan installation frames in a column in the vertical direction.

[0018] Preferably, a vibration reduction assembly is further included, and the horizontal flow fan is installed in the fan bracket through the vibration reduction assembly.

[0019] Preferably, the vibration damping assembly includes a vibration damping washer and a vibration damping shell. The vibration damping washer is installed in the vibration damping shell, with both ends exposed to the vibration damping shell, and the vibration damping washer is provided with a through hole.

[0020] Preferably, the vibration reduction assembly further includes a vibration sensor, which is mounted on the horizontal flow fan.

[0021] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0022] By using the horizontal flow fan in conjunction with the test chamber, a closed and ideal flow environment is formed in the test chamber, avoiding the influence of external factors and system structure on the wind field characteristics, and effectively meeting the simulation needs of various complex wind environments within a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, serving to explain the principles of the present application. It is obvious that the drawings described below are merely some embodiments of the present application, and it is possible for a person of ordinary skill in the art to derive other drawings based on these drawings without inventive effort. In the accompanying drawings:

[0024] Figure 1 This is a structural schematic diagram of a horizontal flow fan of the present application;

[0025] Figure 2 This is a schematic structural diagram of the impeller of this application;

[0026] Figure 3 This is a schematic diagram of the installation of the horizontal flow fan of this application;

[0027] Figure 4A top view of the interior cabin and pressure stabilization cabin of the wind environment simulation system of this application;

[0028] Figure 5 A model diagram of the wind environment simulation system of this application;

[0029] Figure 6 This is a schematic diagram of the fan bracket of this application;

[0030] Figure 7 A schematic diagram of the horizontal airway curtain of this application;

[0031] Figure 8 The static pressure and power performance curves of the horizontal flow fan of this application at 10000 rpm;

[0032] Figure 9 The flow rate is 12000m 3 / s, the test static pressure curve of the horizontal flow fan;

[0033] Figure 10 This is the test curve of horizontal flow fan performance changing with Pitot tube wind speed;

[0034] Figure 11 Comparison chart of horizontal flow fan vibration test curve and design allowable value

[0035] Reference numerals

[0036] 1-air duct, 11-card table, 12-through slot;

[0037] 2-motor body, 21-stator, 22-rotor, 23-motor shaft;

[0038] 3-blade, 31-hub; 4-guide tube, 41-folding platform, 42-sealing ring;

[0039] 5-guide cone, 6-mounting seat, 61-through mounting slot;

[0040] 7-fan bracket, 71-rectifier grille, 72-roller curtain;

[0041] 8-test cabin, 81-pressure stabilizing cabin, 82-inner cabin, 821-horizontal airway curtain, 83-outer cabin, 84-vertical flow fan, 85-rotating flow fan, 86-rotating flow fan louvers;

[0042] 9-vibration damping assembly, 91-vibration damping washer, 911-through hole, 92-vibration damping housing, 93-vibration sensor. DETAILED DESCRIPTION

[0043] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the invention pertains. It should be understood that certain features of the present invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. On the contrary, a plurality of features of the present invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or in any other described embodiment of the present invention when appropriate. Certain features described in the context of various embodiments will not be considered as essential features of those embodiments unless the embodiment is inoperable without those elements. The present invention will be further described below by specific examples, but it should be noted that the specific process conditions and results described in the embodiments of the present invention are only used to illustrate the present invention and cannot limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and substance of the present invention should be included within the scope of protection of the present invention.

[0044] Please refer to Figure 1 and Figure 2 A horizontal flow fan comprises a wind tube 1, a motor body 2 and a plurality of blades 3. The motor body 2 is installed in the wind tube 1. The plurality of blades 3 are evenly spaced along the circumference of the output shaft of the motor body 2. The blades 3 are three-dimensional twisted blades of a bent-swept combination orthogonal type. The forward bending angle of the blades 3 is 10°-14°, the forward sweep angle is 16°-22°, the twist angle is 25°-35°, and the number of blades 3 is 2N, 5≤N≤10. Specifically, the motor body 2 is a permanent magnet synchronous motor, comprising a stator 21, a rotor 22 and a motor shaft 23. The stator 21 and the rotor 22 are embedded in the wind tube 1. The blades 3 are suspended at the shaft ends of the motor shaft 23. The bearings of the motor shaft 23 are grease-lubricated rolling bearings. The blades 3 and the hub 31 form an impeller. The hub 31 is fixedly mounted on the shaft end of the motor shaft 23. The blades 3 are evenly spaced along the circumference of the hub 31. The inner diameter of the wind tube 1 is 300 mm, and the outer diameter of the wind tube 1 is 310 mm.

[0045] A horizontal flow fan of the present invention adopts a high-speed permanent magnet synchronous motor. The impeller is the core component of the horizontal flow fan and is responsible for converting the mechanical energy output by the motor body 2 into gas kinetic energy, thereby improving ventilation efficiency. By optimizing the bending and sweeping design of the blades 3 and adopting orthogonal three-dimensional twisting technology, the interaction between the blades 3 and the airflow is improved, and energy loss is reduced. Experiments and practical applications have shown that the efficiency of the horizontal flow fan can be increased by 5%-10% compared with the traditional design. The bent and swept combined orthogonal three-dimensional twisted blades can make the airflow enter and flow out of the impeller more smoothly, reducing the disturbance of the airflow and the source of noise. According to different tests and application scenarios, the noise level of the fan using the bent and swept combined orthogonal three-dimensional twisted blades can be reduced by 10-20dB compared with the traditional design. An even number of blades 3 is used to reduce radial force imbalance and improve the smoothness of the output airflow.

[0046] Preferably, the forward bend angle is 12°, the forward sweep angle is 19°, the torsion angle is 30°, and the number of blades 3 is 16. This application adopts the parameters of the above-mentioned blades 3, and the simulation performance of the horizontal flow fan is as follows: the test bench test plan is arranged according to the standard JB / T3165 "Thermal Performance Test of Centrifugal and Axial Blowers and Compressors". The experimental conditions are: the impeller adopts a hexahedral grid with a total grid size of 12 million; the temperature is 25°C, the inlet wind pressure is 98kPa, the outlet static pressure boundary is given, and the turbulence model SST is selected for calculation; a pressure differential gauge is installed at the inlet end of the horizontal flow fan to indirectly measure the static pressure at the outlet of the horizontal flow fan by measuring the pressure difference with the atmosphere. Using existing technology, a Pitot tube system is installed at the outlet end of the horizontal flow fan to measure the dynamic pressure. The Pitot tube is an L-type Pitot tube. A flow meter is installed at the outlet end of the horizontal flow fan to measure the mass flow rate. The flow meter is a thermal flow meter. As Figure 8 The following is the static pressure and power performance curve of the horizontal flow fan at 10000rpm. Figure 9 It can be seen that when the flow rate is 12000m 3 / s, the test static pressure value of the horizontal flow fan is higher than the index value of 1700Pa, and the fan power reaches 19kW at this time. Figure 10 This is the test curve of horizontal flow fan performance changing with Pitot tube wind speed. It can be seen from the curve that the wind speed in the fan duct is above 50m / s.

[0047] For further information, please refer to Figure 3, also includes a guide tube 4 and a guide cone 5. The guide tube 4 is installed at the air outlet port of the wind tube 1. The guide cone 5 is connected to the motor body 2 and is located in the guide tube 4. Specifically, the guide tube 4 is inserted into the wind tube 1 and is provided with a plurality of inward folding platforms 41 at one end. The folding platforms 41 are evenly spaced along the circumference of one end of the guide tube 4. The wind tube 1 is provided with a clamping platform 11 that cooperates with the folding platforms. There is a through groove 12 between adjacent clamping platforms 11, and the width of the through groove 12 is not less than the length of the folding platform 41. When in use, the folding platform 41 first enters along the through groove 12, and then the guide tube 4 is rotated. The folding platform 41 overlaps with the clamping platform 11. At this time, the guide tube 4 is clamped on the outside of the wind tube 1. With this structure, the guide tube 4 is quickly installed in the wind tube 1. Preferably, a sealing ring 42 is also provided, which is clamped into the through groove 12 to prevent the air flow from leaking out of the through groove 12, thereby increasing the stability of the air flow.

[0048] Furthermore, the guide cone 5 has a bullet-shaped shape, and the volume ratio of the guide cone 5 to the guide tube 4 is 1:3. Specifically, the horizontal flow fan outputs airflow in a high-speed, rotating, and turbulent state. The bullet-shaped streamlined design can smoothly guide the airflow to converge toward the center, making the airflow smoother.

[0049] For further information, please refer to Figure 3 , further comprising a mounting base 6 disposed on the outside of the fan 1 and having a through-mounting slot 61. Specifically, two sets of mounting bases 6 are symmetrically arranged on opposite sides of the fan 1; two sets of through-mounting slots 61 are symmetrically arranged along the length of the mounting bases 6. This structure allows the fan 1 to be appropriately positioned along the through-mounting slots 61 during installation, improving the horizontal flow fan's installation application scenarios.

[0050] Please refer to Figures 4 to 7 A wind environment simulation system includes a plurality of horizontal flow fans, a fan bracket 7, and a test chamber 8. The plurality of horizontal flow fans are arranged in an array within the fan bracket 7, which is mounted on an inner wall of the test chamber 8. Specifically, the wind environment simulation system includes an axisymmetric test chamber 8, which includes a pressure stabilizing chamber 81, an inner chamber 82, and an outer chamber 83. The pressure stabilizing chamber 81 and the inner chamber 82 are stacked one above the other within the outer chamber 83, forming an airflow circulation channel therebetween. The fan bracket 7 is mounted on an inner wall of the inner chamber 82. Two groups of deployable horizontal air duct curtains 821 are provided in the inner cabin 82. When the two groups of horizontal air duct curtains 821 are in the deployed state, the two groups of horizontal air duct curtains 821 and the two oppositely arranged bulkheads in the inner cabin 82 form a rectangular horizontal airflow channel, and the rectangular horizontal airflow channel can cooperate with the airflow circulation channel to provide a horizontal linear flow wind field; when the two groups of horizontal air duct curtains 821 are in the retracted state, the airflow circulation channel can cooperate with the inner cabin 82 and the pressure stabilizing cabin 81 to provide a vertical airflow wind field or a rotating airflow wind field.

[0051] Furthermore, the test chamber 8 also includes a vertical flow fan 84 and a rotary flow fan 85. At least four vertical flow fans 84 are evenly distributed on the four side walls of the pressure stabilization chamber 81. The vertical flow fans 84 of this application are used to simulate vertical upward or downward airflow in the test center area. Preferably, four vertical flow fans 84 are provided. This application can simulate upward and downward airflow by adjusting the air volume and positive and negative wind direction of the vertical flow fans 84. The vertical flow fans 84 are required to meet the design requirements of large flow and high pressure head when working in both positive and negative directions. Therefore, the vertical flow fans of this application can use existing commercial fans, such as the Tunnel Axial Fan series products of Kruger Ventilation Industries Asia Co., Ltd., model KTF-R1440. The structural design of the vertical flow fans 84 can prevent the impact of rain, surface condensation and frost on the safe operation of the equipment. The rotary flow fan 85 is used to cooperate with the vertical flow fan to form a rotating airflow when simulating wind environments such as tornadoes. For example, the rotary flow fans 85 of the present application can be commercially available rotary flow fans, as long as their performance meets the test requirements of the present application. Twenty rotary flow fans 85 of the present application can be evenly spaced along the inner cabin 82 toward the bottom, with three fans on each side of the straight-sided bulkhead and two fans on each side of the oblique-sided bulkhead. The rotary flow fans 85 are evenly distributed along the length of the bulkhead. Furthermore, the rotary flow fans 85 of the present application are designed as unidirectional flow fans. When reversing is required, a manual turntable is used to horizontally rotate a single fan to adjust the fan's flow direction, with an adjustment range of 0 to 180 degrees. The maximum design height of the manual turntable and the cement mounting base of the present application is 20 cm.

[0052] For further information, please refer to Figure 6 The test chamber 8 also includes rotary flow fan louvers 86, which are mounted on one side of the air outlet of the rotary flow fan 85. The present invention installs rotary flow fan louvers 86 at the air outlet of the rotary flow fan 85 at the bottom of the inner chamber 82. The louvers are adjustable in angle and are opened and adjusted to a predetermined angle during tornado and downburst tests. By adjusting the angle of the rotary flow fan louvers 86, the present invention can change the airflow direction at the rotary flow fan outlet, utilizing multiple rotary flow fans to achieve rotary flow simulation.

[0053] For further information, please refer to Figure 6, the fan bracket 7 has fifteen fan mounting frames in a row in the horizontal direction and twelve fan mounting frames in a row in the vertical direction. Specifically, the horizontal flow fan of the present application is used to simulate the horizontal linear motion airflow, which is composed of a two-dimensional fan array of multiple axial flow fans to form a wind wall. The airflows of all horizontal flow fans in the wind wall are horizontal and parallel to each other, and can form a horizontal linear flow wind direction when working together. A rectifying grille 71 is installed on the air outlet side of the wind wall. The rectifying grille 71 of the present application is used to rectify the airflow outflowing from the horizontal flow fan of the wind wall, and obtain a horizontal flow field with a flow direction parallel to the axis of the horizontal flow fan in the test area. Exemplarily, the rectifying grille 71 of the present application is formed by welding together crisscross plates to form an array grille, each grid is a square with a side length of 0.332m, and the plate thickness is 0.006m. The overall height and width of the rectifying grille 71 are consistent with the size of the wind wall, and the length in the horizontal airflow direction is 0.2m.

[0054] Furthermore, a roller blind 72 is installed on the fan bracket 7. The roller blind 72 includes a horizontal movable blind and a vertical louver. The horizontal movable blind of the present application can be a louver structure or a roller blind structure. The coverage range of the horizontal movable blind of the present application is from the second row from the bottom of the fan bracket 7 to the top. If the horizontal movable blind adopts a louver structure, the blinds are fully opened when conducting a horizontal wind field test and closed when not in use; if the horizontal movable blind adopts a roller blind structure, the roller blind structure is rolled up when conducting a horizontal wind field test, and the roller blind 72 is lowered when conducting a vertical wind field test. Exemplarily, the horizontal blinds or roller blinds 72 of the present application can be divided into three parts in width, one part of which is 3.015m wide and is used to cover the area of ​​the first phase wind wall; the other two parts are both 1.09m wide and are used to cover the area of ​​the second phase wind wall on the left and right sides of the first phase wind wall. The horizontal movable blind covers the wind wall with a height of 4.075m from top to bottom and a thickness of 50mm.

[0055] For further information, please refer to Figure 3 , further comprising a vibration reduction assembly 9, through which the horizontal flow fan is mounted in the fan bracket 7. Specifically, the vibration reduction assembly 9 includes a vibration reduction washer 91 and a vibration reduction housing 92. The vibration reduction washer 91 is mounted in the vibration reduction housing 92, with both ends exposed to the vibration reduction housing 92. The vibration reduction washer 91 is provided with a through hole 911.

[0056] This application provides a vibration reduction component 9 to compare the horizontal flow fan vibration value test curve with the design allowable value. Figure 11 As shown, the average fan vibration value is 1.7 mm / s, which is far below the allowable value of 2.5 mm / s.

[0057] The vibration reduction assembly 9 further includes a vibration sensor 93, which is mounted on the horizontal flow fan and is used to monitor whether the vibration of the horizontal flow fan meets the requirements.

[0058] The horizontal flow fan of the present invention improves the interaction between the blade 3 and the airflow and reduces energy loss by optimizing the curvature and sweep design of the blades and adopting orthogonal three-dimensional twisting technology. Experiments and practical applications have shown that the efficiency of the horizontal flow fan can be improved by 5%-10% compared with the traditional design. The curved and swept combined orthogonal three-dimensional twisted blades can make the airflow enter and flow out of the impeller more smoothly, reducing the disturbance of the airflow and the source of noise. The wind environment simulation system using the horizontal flow fan of the present invention, with the cooperation of the vertical flow fan 84, the rotary flow fan 85, the rotary flow fan louvers 86, the horizontal air duct curtain 821, etc., forms a closed and ideal flow environment in the inner cabin 82, avoids the influence of external factors and system structure on the wind field characteristics, and effectively realizes the simulation needs of various complex wind environments within a limited space.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A horizontal flow fan, characterized in that: The invention comprises a wind tube (1), a motor body (2) and a plurality of blades (3). The motor body (2) is installed in the wind tube (1). The plurality of blades (3) are evenly spaced along the circumference of the output shaft of the motor body (2). The blades (3) are bent-swept combined orthogonal three-dimensional twisted blades. The forward bending angle of the blades (3) is 10°-14°, the forward sweep angle is 16°-22°, and the twist angle is 25°-35°. The number of blades (3) is 2N, and 5≤N≤10.

2. The horizontal flow fan according to claim 1, characterized in that The forward bending angle is 12°, the forward sweep angle is 19°, the twist angle is 30°, and the number of blades (3) is 16.

3. The horizontal flow fan according to claim 1 or 2, characterized in that: It also includes a guide tube (4) and a guide cone (5), wherein the guide tube (4) is installed at the air outlet port of the wind tube (1), and the guide cone (5) is connected to the motor body (2) and is located in the guide tube (4).

4. The horizontal flow fan according to claim 3, characterized in that The guide cone (5) is in the shape of a bullet, and the volume ratio of the guide cone (5) to the volume of the guide tube (4) is 1:

3.

5. The horizontal flow fan according to claim 1, 2 or 4, characterized in that: It also includes a mounting seat (6) arranged outside the wind tube (1), and the mounting seat (6) is provided with a penetrating mounting groove (61).

6. A wind environment simulation system using the horizontal flow fan according to any one of claims 1 to 5, characterized in that: It also includes a fan bracket (7) and a test chamber (8), wherein a plurality of horizontal flow fans are arranged in an array in the fan bracket (7), and the fan bracket (7) is arranged on an inner wall of the test chamber (8).

7. The wind environment simulation system according to claim 6, characterized in that: The fan bracket (7) has fifteen fan installation frames in a row in the horizontal direction and twelve fan installation frames in a column in the vertical direction.

8. The wind environment simulation system according to claim 7, characterized in that: It also includes a vibration reduction component (9), and the horizontal flow fan is installed in the fan bracket (7) through the vibration reduction component (9).

9. The wind environment simulation system according to claim 8, characterized in that: The vibration damping assembly (9) comprises a vibration damping washer (91) and a vibration damping housing (92). The vibration damping washer (91) is installed in the vibration damping housing (92) with both ends exposed to the vibration damping housing (92). The vibration damping washer (91) is provided with a through hole (911).

10. The wind environment simulation system according to claim 8 or 9, characterized in that: The vibration reduction assembly (9) further comprises a vibration sensor (93), which is mounted on the horizontal flow fan.

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