Ion equalization device for negative ion wind tunnel detection equipment

Abstract

The invention discloses an ion balancing device for ion wind tunnel detection equipment, which relates to the technical field of ion detection and comprises a dispersion spoiler and a collection spoiler which are mounted in a gas flow passage of anion wind tunnel detection equipment, the dispersing spoiler and the collecting spoiler are matched with the section of the gas flowing channel so as to cut off the gas flowing channel, the dispersing spoiler is located on the front side of the collecting spoiler, the dispersing spoiler and the collecting spoiler are distributed at intervals, and a plurality of dispersing flowing channels distributed at intervals are formed in the edge of the dispersing spoiler; a collecting overflowing channel is arranged in the middle of the collecting spoiler, and the overflowing area of the collecting overflowing channel is larger than that of the dispersing overflowing channel. The ion generator has the beneficial effects that air flow flows through the dispersion flow passage at the edge and then flows through the collection flow passage in the middle, so that the air flow is firstly dispersed and then collected, and the dispersed air flows are interwoven and mixed together due to turbulent flow caused in the process, so that ions and the air are uniformly mixed.

Description

Technical Field

[0001] This invention relates to the field of ion detection technology, specifically to an ion equalization device for negative ion wind tunnel detection equipment. Background Art

[0002] In existing technologies, air negative ion wind tunnel equipment is commonly used to verify the ion concentration of devices under test. These devices typically generate negative ions through an ionization device (such as an ion generator installed within the equipment, which ionizes air to produce negative ions), and use airflow to transport the charged ions to the wind tunnel test area, thereby providing a stable ion environment for the device under test placed within that area. However, existing technologies have the following problems:

[0003] In practical applications, since negative ions are generated by directly ionizing the air using an ionization device, the resulting ion concentration exhibits significant spatial non-uniformity. Specifically, the ionization device is installed in the gas flow channel. Within the same cross-section of the gas flow channel, the ion concentration is higher near the ionization device, while in areas farther away, the ion concentration decreases with increasing distance. This non-uniformity leads to significant differences in the detected ion concentration values ​​when the tested equipment is placed at different locations within the same cross-section inside the wind tunnel. Furthermore, the dynamic stability of ion distribution during airflow within the wind tunnel is insufficient, resulting in large fluctuations in ion concentration values, further reducing the reliability and repeatability of the test results.

[0004] The root cause of the aforementioned problems lies in the lack of effective means to homogenize and control the distribution of ions in existing wind tunnel equipment. This results in the ions generated by ionization failing to achieve effective diffusion and uniform mixing in space. This non-uniformity directly limits the accuracy of calibration tests, especially in applications requiring multi-point verification or high precision, where the limitations of existing equipment are even more pronounced. Therefore, there is an urgent need for a technical solution that can homogenize the ion distribution inside the wind tunnel to address the issue of ion concentration differences at different locations within the same test cross-section and improve the stability and consistency of test results. Summary of the Invention

[0005] To address this issue, the present invention provides an ion equalization device for negative ion wind tunnel testing equipment, thereby resolving the problem of ion concentration differences at different locations on the same test cross section in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An ion equalization device for a negative ion wind tunnel testing equipment includes a dispersing baffle plate and a converging baffle plate for installation in the gas flow channel of the negative ion wind tunnel testing equipment. The dispersing baffle plate and the converging baffle plate are adapted to the cross-section of the gas flow channel to cut off the gas flow channel. The dispersing baffle plate is located in front of the converging baffle plate and the two are spaced apart. The edge of the dispersing baffle plate is provided with a plurality of spaced dispersing flow channels, and the middle part of the converging baffle plate is provided with a converging flow channel. The flow area of ​​the converging flow channel is larger than the flow area of ​​the dispersing flow channel.

[0008] Furthermore, the dispersing spoiler and the converging spoiler are circular or rectangular plates.

[0009] Furthermore, the distributed flow channel is provided in two rings.

[0010] Furthermore, both the dispersed flow channel and the converging flow channel have a perforated structure.

[0011] Furthermore, the dispersed flow channel is divided into an air intake section, a negative pressure suction and mixing section, and a diffusion section from front to back. The air intake section is shaped like a flared mouth with a larger front and a smaller rear. The negative pressure suction and mixing section is cylindrical, and the flow area of ​​the negative pressure suction and mixing section is equal to the flow area of ​​the rear end of the air intake section. The diffusion section is shaped like a flared mouth with a smaller front and a larger rear. The flow area of ​​the front end of the diffusion section is equal to the flow area of ​​the negative pressure suction and mixing section.

[0012] The front side of the dispersion baffle is also provided with multiple non-through air intake channels. The distance between the air intake channel and the center of the dispersion baffle is smaller than the distance between the dispersion flow channel and the center of the dispersion baffle. The air intake channel and the negative pressure suction mixing section of the dispersion flow channel are connected through a transfer channel. The flow area of ​​the transfer channel is smaller than the flow area of ​​the negative pressure suction mixing section.

[0013] Furthermore, the air intake channel and the distributed flow channel are connected in a one-to-one correspondence.

[0014] Furthermore, the intake channel is connected to the dispersion flow channel on the opposite side.

[0015] Furthermore, the dispersed flow channel is a dispersed flow hole, the air inlet section and the diffuser section are both conical holes, and the negative pressure suction mixing section is a cylindrical hole;

[0016] The air intake channel is a blind hole;

[0017] The transfer channel is a horizontally arranged connecting hole.

[0018] Furthermore, the dispersed flow channel is a dispersed flow pipe, the air inlet section and the diffuser section are both conical pipes, and the negative pressure suction mixing section is a cylindrical pipe;

[0019] The air intake channel is a blind tube with an open front end and a closed rear end;

[0020] The transfer channel is a flexible tube.

[0021] Furthermore, the dispersion spoiler includes a front panel, a rear panel, and a support column connecting the front panel and the rear panel. The front end of the dispersion flow pipe is exposed on the front panel, the rear end of the dispersion flow pipe is exposed on the rear panel, the front end of the blind pipe is exposed on the front panel, and the flexible tube is distributed in the interlayer between the front panel and the rear panel.

[0022] The present invention has the following advantages:

[0023] In use, the ion equalization device of this invention is installed in the gas flow channel (also known as a wind tunnel, air duct, etc.) of the negative ion wind tunnel testing equipment. An ion generator is also installed in the gas flow channel. The ion equalization device is located behind the ion generator. Behind the ion equalization device is the test area (also known as the test area) for testing the equipment to be calibrated. A wind speed control device is set at the tail end of the gas flow channel. During normal testing, the ion generator ionizes and generates a large number of ions, which fill the air. Under the action of the wind speed control device, the air mixed with ions forms an airflow (also known as an air source). Since the dispersion baffle cuts off the gas flow channel, the airflow can only be forced to change course and flow through the dispersion flow channel at the edge, and then change course again and flow through the convergence flow channel in the middle. Thus, the airflow undergoes dispersion-convergence in sequence. The turbulence generated during this process causes the dispersed airflows to intertwine and mix together, so that the ions in the airflow are fully mixed with the air and mixed evenly. This solves the problem of ion concentration differences at different positions of the same cross section, improves the consistency and accuracy of the test, and provides a basis for the testing of the equipment to be calibrated.

[0024] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0027] Figure 1 This is a schematic diagram of the structure of a circular ion equalization device provided in Embodiment 1 of the present invention;

[0028] Figure 2 for Figure 1 A cross-sectional view of the ion equalization device shown.

[0029] Figure 3 This is a schematic diagram of a rectangular ion equalization device provided in Embodiment 1 of the present invention;

[0030] Figure 4 for Figure 3 A cross-sectional view of the ion equalization device shown.

[0031] Figure 5 This is a schematic diagram showing the distribution of the dispersion flow channel and the air intake channel on the dispersion baffle plate of an ion equalization device provided in Embodiment 2 of the present invention.

[0032] Figure 6 This is a schematic diagram of the dispersion flow channel, air intake channel, and transfer channel of the dispersion baffle plate of an ion equalization device provided in Embodiment 2 of the present invention;

[0033] Figure 7 This is a schematic diagram showing the installation positions of the dispersion baffle, dispersion flow channel, air intake channel, and transfer channel of an ion equalization device provided in Embodiment 2 of the present invention.

[0034] In the diagram: 1. Dispersing spoiler; 11. Dispersing flow channel; 111. Intake section; 112. Negative pressure suction mixing section; 113. Diffusion section; 12. Intake channel; 13. Conversion channel; 14. Front panel; 15. Rear panel; 16. Support column; 2. Converging spoiler; 12. Converging flow channel. Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figures 1 to 4 As shown, this embodiment provides an ion equalization device for a negative ion wind tunnel testing equipment, including a dispersing baffle plate 1 and a converging baffle plate 2 for installation in the gas flow channel of the negative ion wind tunnel testing equipment. The dispersing baffle plate 1 and the converging baffle plate 2 are respectively adapted to the cross-section of the gas flow channel to cut off the gas flow channel. The dispersing baffle plate 1 is located in front of the converging baffle plate 2 and the two are distributed at intervals. The edge of the dispersing baffle plate 1 is provided with a plurality of dispersed flow channels 11 distributed at intervals, and the middle part of the converging baffle plate 2 is provided with a converging flow channel 12. The flow area of ​​the converging flow channel 12 is larger than the flow area of ​​the dispersing flow channel 11.

[0038] In use, the ion equalization device of the present invention is installed in the gas flow channel (also known as wind tunnel or air duct) of the negative ion wind tunnel testing equipment. An ion generator is also installed in the gas flow channel. The ion equalization device is located behind the ion generator. Behind the ion equalization device is the test area (also known as the test area) for testing the equipment to be calibrated. A wind speed control device is set at the tail end of the gas flow channel. During normal testing, the ion generator ionizes and generates a large number of ions, which fill the air. Under the action of the wind speed control device, the air mixed with ions forms an airflow (also known as the air source). Since the dispersion baffle 1 cuts off the gas flow channel, the airflow can only be forced to change course and flow through the dispersion flow channel 11 at the edge, and then change course again and flow through the convergence flow channel 12 in the middle. Thus, the airflow undergoes dispersion-convergence in sequence. The turbulence caused during this process causes the dispersed airflow to intertwine and mix together, so that the ions in the airflow are fully mixed with the air and mixed evenly. This solves the problem of ion concentration differences at different positions of the same cross section, improves the consistency and accuracy of the test, and provides a basis for the testing of the equipment to be calibrated.

[0039] Generally, the cross-section of the gas flow channel is circular or square, with square being more common. Therefore, in this embodiment, the dispersing baffle 1 and the converging baffle 2 are circular or rectangular (square) plates. This effectively cuts off the gas flow channel, allowing the airflow mixed with air and ions to flow only through the dispersing flow channel 11 and the converging flow channel 12. Preferably, after installing the dispersing baffle 1 and the converging baffle 2, a sealing design is implemented at the contact points between the dispersing baffle 1, the converging baffle 2 and the wind tunnel wall panel (i.e., the wall panel of the gas flow channel).

[0040] In this embodiment, the multiple distributed flow channels 11 are arranged in multiple rings, such as rectangular rings or circles. Preferably, the multiple distributed flow channels 11 are distributed in two rings to avoid the distributed flow channels 11 being too close to the center of the distributed flow deflector 1 due to too many rings.

[0041] In this embodiment, both the dispersing flow channel 11 and the converging flow channel 12 are perforated structures, which are easy to manufacture. Preferably, the converging flow channel 12 is a funnel shape that is larger at the front and smaller at the back, which facilitates the convergence of dispersed airflow branches (vortices or turbulence will occur during the convergence process).

[0042] Example 2

[0043] This embodiment provides another ion equalization device for negative ion wind tunnel testing equipment, which is actually an improvement on embodiment 1. The similarities will not be repeated here; only the differences will be described. It should be noted that the accompanying drawings used in this embodiment are intended to illustrate the design or working principle, and therefore the structure has been simplified.

[0044] like Figure 5 and 6 As shown, in this embodiment, the dispersion flow channel 11 is divided into an air intake section 111, a negative pressure suction mixing section 112, and a diffusion section 113 from front to back. The air intake section 111 is shaped like a flared mouth with a larger front and a smaller rear. The negative pressure suction mixing section 112 is cylindrical, and the flow area of ​​the negative pressure suction mixing section 112 is equal to the flow area of ​​the rear end of the air intake section 111. The diffusion section 113 is shaped like a flared mouth with a smaller front and a larger rear. The flow area of ​​the front end of the diffusion section 113 is equal to the flow area of ​​the negative pressure suction mixing section 112.

[0045] The front side of the deflector plate 1 is also provided with multiple non-through air intake channels 12. The distance between the air intake channel 12 and the center of the deflector plate 1 is smaller than the distance between the deflector flow channel 11 and the center of the deflector plate 1. The air intake channel 12 and the negative pressure suction mixing section 112 of the deflector flow channel 11 are connected through the transfer channel 13. The flow area of ​​the transfer channel 13 is smaller than the flow area of ​​the negative pressure suction mixing section 112.

[0046] The ion generator produces a large number of ions, which flow with the air under the action of the wind speed control device. A portion of the air flows through the dispersion flow channel 11. Due to the special design of the dispersion flow channel 11, the airflow accelerates through the negative pressure suction mixing section 112 and forms a negative pressure (or low pressure) in this area. Under the action of negative pressure, the air in the intake channel 12 is drawn into the negative pressure suction mixing section 112 through the diversion channel 13. The air in front of the intake channel 12 and the air in front of the dispersion flow channel 11 merge in the negative pressure suction mixing section 112 and form a violent vortex, so that the air entering from the two places is fully mixed. Even if the ion concentration in the air in the two places is large, when it is discharged from the diffusion section 113, it becomes an airflow branch with a uniform ion concentration.

[0047] Generally, the intake channel 12 and the dispersion flow channel 11 are connected in a one-to-one correspondence. Preferably, the intake channel 12 is connected to the dispersion flow channel 11 on the opposite side, that is, the intake channel 12 and the dispersion flow channel 11, which are farthest apart, are connected. In this way, air from two far apart locations in the same cross section can be drawn into the negative pressure suction mixing section 112 for mixing, forming a very good radial mixing effect. When combined with the "dispersion first, then convergence" turbulent mixing method in Example 1, it can significantly improve the mixing effect of ions and air.

[0048] For example, such as Figure 5 As shown, holes #1, #2, #3, #4, #5, #6, #7, and #8 are distributed flow channels 11, and holes #1, #2, #3, #4, #5, #6, #7, and #8 are suction channels 12. It can be seen that the distance between distributed flow channel #11 and suction channel #5 is the greatest; therefore, distributed flow channel #11 and suction channel #5 are connected. Similarly, distributed flow channel #2 and suction channel #6 are connected. Channels 11 and 12 are connected. Channel 3 (distributed flow channel 11) is connected to channel 7 (intake channel 12); channel 4 (distributed flow channel 11) is connected to channel 8 (intake channel 12); channel 5 (distributed flow channel 11) is connected to channel 1 (intake channel 12); channel 6 (distributed flow channel 11) is connected to channel 2 (intake channel 12); channel 7 (distributed flow channel 11) is connected to channel 3 (intake channel 12); and channel 8 (distributed flow channel 11) is connected to channel 4 (intake channel 12). It should be noted that the number of distributed flow channels 11 and intake channels 12 is not limited to eight.

[0049] Optionally, the dispersion flow channel 11 is a dispersion flow hole, the inlet section 111 and the diffuser section 113 are both conical holes, and the negative pressure suction mixing section 112 is a cylindrical hole; the intake channel 12 is a blind hole; and the diversion channel 13 is a transversely arranged connecting hole. Preferably, the dispersion flow channel 11 is a dispersion flow pipe, the inlet section 111 and the diffuser section 113 are both conical pipes, and the negative pressure suction mixing section 112 is a cylindrical pipe; the intake channel 12 is a blind pipe with an open front end and a closed rear end; and the diversion channel 13 is a flexible hose (the purpose of using a flexible hose is to facilitate pipe routing; the flexible hose has a certain degree of rigidity and will not deform or deform very little during the intake process, thus avoiding blockage). Compared with the perforated structure of the diversion channel 13, the tubular structure of the diversion channel 13 is easier to manufacture and helps to reduce the overall thickness of the dispersion baffle 1 (in the perforated structure, in order to avoid the intersection of the diversion channels 13, the distribution of the diversion channels 13 needs to be considered, which will increase the overall thickness of the dispersion baffle 1).

[0050] When the dispersed flow channel 11, intake channel 12, and diversion channel 13 are constructed using a tubular structure, the dispersed baffle 1 adopts a modular assembly plate structure. For example... Figure 7 As shown, the diffuser 1 includes a front panel 14, a rear panel 15, and a support column 16 connecting the front panel 14 and the rear panel 15. The front end of the diffuser pipe is exposed in the front panel 14, the rear end of the diffuser pipe is exposed in the rear panel 15, the front end of the blind pipe is exposed in the front panel 14, and the flexible tube is distributed in the interlayer between the front panel 14 and the rear panel 15.

[0051] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An ion equalization device for negative ion wind tunnel testing equipment, characterized in that, The device includes a dispersing baffle plate (1) and a converging baffle plate (2) for installation in the gas flow channel of the negative ion wind tunnel testing equipment. The dispersing baffle plate (1) and the converging baffle plate (2) are respectively adapted to the cross-section of the gas flow channel to cut off the gas flow channel. The dispersing baffle plate (1) is located in front of the converging baffle plate (2) and the two are distributed at intervals. The edge of the dispersing baffle plate (1) is provided with a plurality of dispersed flow channels (11) distributed at intervals. The middle part of the converging baffle plate (2) is provided with a converging flow channel (12). The flow area of ​​the converging flow channel (12) is larger than the flow area of ​​the dispersing flow channel (11).

2. The ion equalization device for negative ion wind tunnel testing equipment according to claim 1, characterized in that, The dispersing baffle (1) and the converging baffle (2) are circular or rectangular plates.

3. The ion equalization device for negative ion wind tunnel testing equipment according to claim 1, wherein the dispersion flow channel (11) is provided with two rings.

4. The ion equalization device for negative ion wind tunnel testing equipment according to claim 1, characterized in that, Both the dispersing flow channel (11) and the collecting flow channel (12) are perforated structures.

5. The ion equalization device for negative ion wind tunnel testing equipment according to claim 1, characterized in that, The dispersed flow channel (11) is divided into an air intake section (111), a negative pressure suction mixing section (112), and a diffusion section (113) from front to back. The air intake section (111) is shaped like a horn with a larger front and a smaller rear. The negative pressure suction mixing section (112) is cylindrical, and the flow area of ​​the negative pressure suction mixing section (112) is equal to the flow area of ​​the rear end of the air intake section (111). The diffusion section (113) is shaped like a horn with a smaller front and a larger rear. The flow area of ​​the front end of the diffusion section (113) is equal to the flow area of ​​the negative pressure suction mixing section (112). The front side of the dispersion baffle (1) is also provided with a plurality of non-through air intake channels (12). The distance between the air intake channel (12) and the center of the dispersion baffle (1) is smaller than the distance between the dispersion flow channel (11) and the center of the dispersion baffle (1). The air intake channel (12) and the negative pressure suction mixing section (112) of the dispersion flow channel (11) are connected through the transfer channel (13). The flow area of ​​the transfer channel (13) is smaller than the flow area of ​​the negative pressure suction mixing section (112).

6. The ion equalization device for negative ion wind tunnel testing equipment according to claim 5, characterized in that, The air intake channel (12) and the dispersed flow channel (11) are connected in a one-to-one correspondence.

7. The ion equalization device for negative ion wind tunnel testing equipment according to claim 5, characterized in that, The intake channel (12) is connected to the dispersion flow channel (11) on the opposite side.

8. The ion equalization device for negative ion wind tunnel testing equipment according to claim 5, characterized in that, The dispersion flow channel (11) is a dispersion flow hole, the air inlet section (111) and the diffuser section (113) are both conical holes, and the negative pressure suction mixing section (112) is a cylindrical hole; The air intake channel (12) is a blind hole; The transfer channel (13) is a horizontally arranged connecting hole.

9. The ion equalization device for negative ion wind tunnel testing equipment according to claim 5, characterized in that, The dispersed flow channel (11) is a dispersed flow pipe, the air inlet section (111) and the diffuser section (113) are both conical pipes, and the negative pressure suction mixing section (112) is a cylindrical pipe; The air intake channel (12) is a blind tube with an open front end and a closed rear end; The transfer channel (13) is a flexible tube.

10. The ion equalization device for negative ion wind tunnel testing equipment according to claim 9, characterized in that, The dispersion baffle (1) includes a front panel (14), a rear panel (15), and a support column (16) connecting the front panel (14) and the rear panel (15). The front end of the dispersion flow pipe is exposed on the front panel (14), the rear end of the dispersion flow pipe is exposed on the rear panel (15), the front end of the blind pipe is exposed on the front panel (14), and the flexible tube is distributed in the interlayer between the front panel (14) and the rear panel (15).

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