Fan system for controlling gas turbulence

Abstract

The utility model discloses a fan system for controlling gas turbulent flow, which comprises a test chamber, and a wind source section, a capillary inertial navigation advection section, a static pressure section and a diversion section arranged at the turning position of the test chamber are sequentially arranged in the test chamber; the air source section comprises a plurality of axial flow fans arranged in a rectangular array; the capillary inertial navigation advection section comprises a plurality of advection pipes in a rectangular array; the static pressure section comprises a plurality of static pressure pipes in a rectangular array; and the flow guide section consists of a plurality of arc-shaped plates which are arranged in parallel. According to the utility model, the capillary inertial navigation advection section, the static pressure section and the flow guide section are reasonably arranged and designed, so that the airflow can be gradually converted into a laminar flow state from a turbulent flow state, the static pressure is increased to stabilize the airflow, avoid turbulent flow and ensure uniform flow, and the accuracy of an experimental result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbulence, in particular to a fan system for controlling gas turbulence. Background Art

[0002] Automobile environmental testing refers to the process of evaluating and verifying the performance of an automobile under various environmental conditions, which covers multiple aspects, such as: temperature testing, humidity testing, dustproof testing, waterproof testing, wind resistance stability testing, etc.;

[0003] Among them, the wind resistance stability testing is mainly used to evaluate the stability and handling performance of an automobile when encountering crosswinds during driving, and to evaluate the wind resistance rollover ability and lateral stability of the vehicle;

[0004] In the related art, a fan is usually used to simulate the wind source. However, the airflow generated in this way will have disturbances and turbulence phenomena during the flow process. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model provides a fan system for controlling gas turbulence to solve this problem.

[0006] To achieve the above object, the present application provides the following technical solutions:

[0007] A fan system for controlling gas turbulence, comprising: a test chamber, in which an air source section, a capillary inertial advection section, a static pressure section, and a diversion section arranged at the turning position of the test chamber are sequentially provided.

[0008] Further arranged as: there is a distance of 500 mm - 1000 mm between the capillary inertial advection section and the air source section.

[0009] Further arranged as: there is a distance of 75 mm - 125 mm between the static pressure section and the capillary inertial advection section.

[0010] Further arranged as: the air source section includes a plurality of axial flow fans arranged in a rectangular array.

[0011] Further arranged as: the capillary inertial advection section includes a plurality of advection tubes arranged in a rectangular array.

[0012] Further arranged as: the length of the advection tube is 450 mm - 550 mm, and the pipe diameter is 45 mm - 55 mm.

[0013] Further arranged as: the static pressure section includes a plurality of static pressure tubes arranged in a rectangular array.

[0014] Further arranged as: the diversion section is composed of a plurality of arc-shaped plates arranged in parallel.

[0015] Further set as: both ends of the arc-shaped plate are set as blade shapes.

[0016] Further set as: a plurality of diversion channels are formed between the inner wall at the turning position of the test cabin and the adjacent surfaces of a plurality of arc-shaped plates, and a plurality of baffle plates which are evenly distributed and staggered are arranged between the two inner walls of the plurality of diversion channels, and the arrangement of the baffle plates on the plurality of diversion channels from outside to inside becomes gradually sparser.

[0017] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0018] 1. Stable flow field: The reasonable setting and design of the capillary inertial navigation flat flow section, static pressure section and diversion section can gradually transform the air flow from turbulent flow to laminar flow state, increase the static pressure to stabilize the air flow, avoid turbulent flow and ensure uniform flow, and improve the accuracy of experimental results.

[0019] 2. Air flow control: The air source section adopts a variable-pitch axial-flow fan, and the blade spacing and angle can be adjusted to accurately control the air flow rate.

[0020] 3. Preventing uneven air flow phenomenon: The design of the diversion section can effectively prevent the turbulent flow at the turning position of the air flow, and the uniform distribution of the air flow velocity is realized through the setting of the baffle plates.

[0021] In summary, the present utility model has multiple advantages such as accurate air flow control, stable air flow field, and prevention of uneven air flow, and is applicable to the anti-wind stability test of automobiles and other occasions that require precise air flow control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of the overall layout of the present utility model;

[0024] Figure 2 It is a side view of the air source section;

[0025] Figure 3 It is a side view of the capillary inertial navigation flat flow section.

[0026] Reference numerals: 1. Test cabin; 2. Air source section; 3. Capillary inertial navigation flat flow section; 4. Static pressure section; 5. Diversion section; 6. Axial-flow fan; 7. Flat flow pipe; 8. Static pressure pipe; 9. Arc-shaped plate; 10. Diversion channel; 11. Baffle plate. Detailed implementation mode

[0027] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment

[0031] Refer to Figures 1 - 3 , a fan system for controlling gas turbulence disclosed by the present utility model, including a test chamber 1, in which an air source section 2, a capillary inertial flow section 3, a static pressure section 4, and a diversion section 5 are sequentially arranged;

[0032] In this embodiment, the air source section 2 is composed of a plurality of axial fans 6 arranged in a rectangular array, and the plurality of axial fans 6 are selected as variable pitch (VP) fans, which can change the blade spacing and angle during operation, thereby correspondingly changing the flow rate;

[0033] In this embodiment, a spacing of 500 mm - 1000 mm is provided between the capillary inertial flow section 3 and the air source section 2; and the capillary inertial flow section 3 is composed of a plurality of flat flow pipes 7 arranged in a rectangular array. The flat flow pipes 7 are stainless steel pipes, with a pipe length between 450 mm - 550 mm and a pipe diameter between 45 mm - 55 mm;

[0034] The flow straightening tube 7 through the rectangular array can help the air flow gradually change from the turbulent state to the laminar state, making the gas flow more stable. Moreover, the flow straightening tube 7 set in an elongated shape is conducive to streamline the air flow inside the tube, reducing resistance and chaos. In addition, a certain distance is set between the capillary inertial flow straightening section 3 and the air source section 2, further allowing the gas to have enough space for sorting.

[0035] In this embodiment, a distance of 75 mm - 125 mm is set between the static pressure section 4 and the capillary inertial flow straightening section 3. Such a setting is conducive to reducing the gradient of the air flow velocity and improving the uniformity of the flow field.

[0036] Furthermore, the static pressure section 4 consists of a plurality of static pressure tubes 8 in a rectangular array, and the tube length of the static pressure tube 8 is greater than the tube length of the flow straightening tube 7; by using the longer static pressure tube 8 to increase the static pressure, the purpose of further stabilizing the air flow is achieved;

[0037] In this embodiment, the diversion section 5 is arranged at the turning position of the test chamber 1 to prevent the turbulent flow at the air flow turning point;

[0038] Specifically, the diversion section 5 is composed of a plurality of arc-shaped plates 9 arranged in parallel, and both ends of the arc-shaped plate 9 are set as blade-shaped for better diversion; the arc diameters of the plurality of arc-shaped plates 9 gradually decrease from outside to inside;

[0039] Furthermore, a plurality of diversion channels 10 are formed between the inner wall at the turning of the test chamber 1 and the adjacent surfaces of the plurality of arc-shaped plates 9. A plurality of baffle plates 11 evenly distributed and staggered are arranged between the two inner walls of the diversion channel 10, and the number of baffle plates 11 arranged on the plurality of diversion channels 10 from outside to inside gradually decreases and the interval distance gradually increases.

[0040] Since the air flow in the curved pipeline will be affected by the centripetal force, causing the gas flow velocity to increase. This leads to an increase in the air flow velocity after the air flow passes through the large arc diameter diversion channel 10, and a slowdown in the air flow velocity after the air flow passes through the small arc diameter diversion channel 10, thus resulting in an uneven air flow situation;

[0041] By arranging relatively dense baffle plates 11 in the large arc diameter diversion channel 10 to block the flow, the flow velocity difference between it and the small arc diameter diversion channel 10 is reduced, thereby realizing the uniform distribution of the air flow.

[0042] The working principle and beneficial effects of the present utility model are as follows:

[0043] The air source section 2 of the present utility model is composed of multiple adjustable axial fans 6, and the blade spacing and angle can be adjusted according to needs, thereby changing the air flow rate. The air volume generated by the air source section 2 gradually changes the air flow from a turbulent state to a laminar state through multiple rectangular arrayed advection pipes 7. The air flow then passes through a relatively long static pressure pipe 8 to increase the static pressure to further stabilize the air flow. The air flow then passes through a diversion channel 10 composed of multiple arc-shaped plates 9 to prevent turbulent flow at the air flow turning point. By setting a design with a gradually decreasing arc diameter and installing a flow blocking plate 11, uniform distribution of the air flow is achieved;

[0044] In summary, through the settings of the capillary inertial advection section 3, the static pressure section 4, and the diversion section 5, the present utility model achieves the purpose of controlling gas turbulence and stabilizing the air flow field.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A fan system for controlling gas turbulence, characterized in that: include: A test cabin (1), wherein a wind source section (2), a capillary guide advection section (3), a static pressure section (4), and a guide section (5) at a turning position of the test cabin (1) are sequentially arranged in the test cabin (1).

2. A fan system for controlling gas turbulence according to claim 1, characterized in that: A spacing of 500 mm to 1000 mm is provided between the capillary guide advection section (3) and the wind source section (2).

3. A fan system for controlling gas turbulence according to claim 1, characterized in that: A spacing of 75 mm to 125 mm is provided between the static pressure section (4) and the capillary guide advection section (3).

4. A fan system for controlling gas turbulence according to claim 1, characterized in that: The wind source section (2) comprises a plurality of axial flow fans (6) arranged in a rectangular array.

5. A fan system for controlling gas turbulence according to claim 1, characterized in that: The capillary guidance advection section (3) comprises a plurality of advection tubes (7) in a rectangular array.

6. A fan system for controlling gas turbulence according to claim 5, characterized in that: The horizontal flow tube (7) has a length of 450 mm to 550 mm and a diameter of 45 mm to 55 mm.

7. A fan system for controlling gas turbulence according to claim 1, characterized in that: The static pressure section (4) comprises a plurality of static pressure tubes (8) in a rectangular array.

8. The fan system for controlling gas turbulence according to claim 1, characterized in that: The guide section (5) is composed of a plurality of arc-shaped plates (9) arranged in parallel.

9. A fan system for controlling gas turbulence according to claim 8, characterized in that: Both ends of the arc-shaped plate (9) are configured to be blade-shaped.

10. A fan system for controlling gas turbulence according to claim 8, characterized in that: A plurality of flow guide channels (10) are formed between the inner wall at the turning point of the test chamber (1) and the adjacent surfaces of the plurality of arc-shaped plates (9), and a plurality of evenly distributed and staggered spoilers (11) are arranged between the inner walls on both sides of the plurality of flow guide channels (10), and the spoilers (11) on the plurality of flow guide channels (10) are arranged gradually more sparsely from the outside to the inside.

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