Ionic wind generation measuring device

Abstract

The utility model discloses an ionic wind generation measuring device which comprises a base, one end of the base is provided with a flat plate, the flat plate is provided with a needle-shaped electrode, the base is provided with a wind speed probe and a cylindrical electrode, the cylindrical electrode is located between the wind speed probe and the needle-shaped electrode, and the needle-shaped electrode and the cylindrical electrode are used for generating plasma wind in a high-voltage experiment. The wind speed probe is used for measuring the wind speed of the cylindrical electrode air outlet. The beneficial effects of the utility model are that the needle-shaped electrode is fixed on the flat plate, the needle-shaped electrode is right opposite to the center of the cylindrical electrode, the needle-shaped electrode is connected with a high-voltage experiment power supply, the cylindrical electrode is grounded, the power supply is turned on, and the output voltage of the high-voltage power supply is slowly increased, so that the needle-shaped electrode and the cylindrical electrode generate plasma to form plasma wind; and finally, the wind speed of the air outlet is measured through a wind speed probe, so that the method can be used for gas discharge research under a needle-cylinder electrode.

Description

Technical Field

[0001] The utility model relates to the technical field of ion wind measurement, in particular to an ion wind generation and measurement device. Background Art

[0002] It is very important to study the gas discharge characteristics of different electrode combinations and measure the plasma wind thrust generated by gas discharge under this electrode combination. At present, the domestic main method is to use "needle-plate" and "plate-plate" electrodes to study the characteristics of gas discharge, and build a plasma wind speed measurement experimental device. The key to this measurement device is to use gas flow measurement sensors to make plasma anemometers. These sensors can sense the movement of ions in plasma. When wind blows through the sensor, the wind speed will cause the plasma to move, generate ionization and charge, and the sensor uses these ionization and charge changes to measure wind speed.

[0003] However, from the current situation, the devices that use "needle-plate" and "plate-plate" electrodes for gas discharge and measurement cannot be directly used for gas discharge under "needle-cylinder" electrodes. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an ion wind generation and measurement device.

[0005] The purpose of the utility model is achieved through the following technical scheme: an ion wind generation and measurement device, including a base, a flat plate is arranged at one end of the base, a needle-shaped electrode is arranged on the flat plate, a wind speed probe and a cylindrical electrode are arranged on the base, and the cylindrical electrode is located between the wind speed probe and the needle-shaped electrode, the needle-shaped electrode and the cylindrical electrode are used to generate plasma wind in high-voltage experiments, and the wind speed probe is used to measure the wind speed at the air outlet of the cylindrical electrode.

[0006] Preferably, a plurality of limiting holes b are provided on the flat plate, and the needle-shaped electrodes are installed in corresponding limiting holes b through nuts.

[0007] Preferably, the limiting holes b are distributed vertically on the flat plate.

[0008] Preferably, a plurality of limiting holes a are provided on the base, and the wind speed probes are installed in corresponding limiting holes a.

[0009] Preferably, a column is placed on the base, a bracket is installed on the top of the column, a cylindrical electrode is arranged in the bracket, and a cushion block is arranged between the cylindrical electrode and the bracket.

[0010] Preferably, guide rails are provided on both sides of the column, and scale lines are provided on the guide rails.

[0011] Preferably, the central axis of the limiting hole a coincides with the projection of the central axis of the cylindrical electrode on the base.

[0012] Preferably, the central axis of the limiting hole a and the central axis of the limiting hole b are perpendicular to each other.

[0013] Preferably, the centers of the needle-shaped electrode and the cylindrical electrode are at the same height.

[0014] Preferably, a plurality of support columns are provided on the lower surface of the base.

[0015] The utility model has the following advantages: the utility model fixes the needle electrode on the flat plate so that it faces the center of the cylindrical electrode, connects the needle electrode to a high-voltage experimental power supply, and grounds the cylindrical electrode at the same time. The power supply is turned on, and the output voltage of the high-voltage power supply is slowly increased, so that the needle electrode and the cylindrical electrode generate plasma and form plasma wind. Finally, the wind speed at the air outlet is measured by a wind speed probe, so that it can be used for gas discharge research under the "needle-cylinder" electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of the measuring device;

[0017] In the figure, 1-needle electrode, 2-pad, 3-cylindrical electrode, 4-bracket, 5-guide rail, 6-column, 7-wind speed probe, 8-limiting hole a, 9-limiting hole b, 10-nut, 11-plate, 12-base, 13-support column. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In this embodiment, if Figure 1 As shown, an ion wind generation and measurement device includes a base 12, and a flat plate 11 is provided at one end of the base 12. Preferably, the flat plate 11 is connected to the base 12 by hot melt adhesive. A needle electrode 1 is provided on the flat plate 11, and a wind speed probe 7 and a cylindrical electrode 3 are provided on the base 12, and the cylindrical electrode 3 is located between the wind speed probe 7 and the needle electrode 1. Preferably, the center of the needle electrode 1 and the cylindrical electrode 3 are at the same height. The needle electrode 1 and the cylindrical electrode 3 are used to generate plasma wind in a high-voltage experiment, and the wind speed probe 7 is used to measure the wind speed at the outlet of the cylindrical electrode 3. By fixing the needle electrode 1 on the flat plate 11 so that it is directly opposite to the center of the cylindrical electrode 3, and connecting the needle electrode 1 to a high-voltage experimental power supply, while the cylindrical electrode 3 is grounded, turning on the power supply, and slowly increasing the output voltage of the high-voltage power supply, the needle electrode 1 and the cylindrical electrode 3 generate plasma, forming a plasma wind, and finally measuring the wind speed at the outlet through the wind speed probe 7. Finally, the thrust of the plasma wind generated by the gas discharge is calculated by a formula, so that it can be used for gas discharge research under the "needle-cylinder" electrode. In this embodiment, the calculation formula is:

[0025] F=Sρv 2 ;

[0026] Among them, F is the plasma wind thrust, S is the cross-sectional area of ​​the cylindrical electrode, v is the plasma wind speed, and ρ is the air density, which is 1.225 kg / m at room temperature. 3 The cylindrical electrode 3, the wind speed probe 7 and the needle electrode 1 are all existing equipment and can be purchased from the market, so they will not be described in detail here.

[0027] Furthermore, a plurality of limiting holes b9 are provided on the plate 11, and the needle-shaped electrode 1 is installed in the corresponding limiting holes b9 through the nut 10. Preferably, the limiting holes b9 are distributed up and down on the plate 11. Specifically, the needle-shaped electrode 1 is 10 cm long and 0.5 cm in diameter, the spacing between adjacent limiting holes b9 is 2.5 cm, and the diameter of each limiting hole b9 is 0.5 cm.

[0028] In this embodiment, a plurality of limiting holes a8 are provided on the base 12, and the wind speed probe 7 is installed in the corresponding limiting holes a8. Furthermore, the central axis of the limiting hole a8 is perpendicular to the central axis of the limiting hole b9. Specifically, the spacing between adjacent limiting holes a8 is 2 cm, and the diameter of each limiting hole a8 is 1 cm.

[0029] In this embodiment, a column 6 is placed on the base 12, a bracket 4 is installed on the top of the column 6, a cylindrical electrode 3 is arranged in the bracket 4, and a cushion block 2 is arranged between the cylindrical electrode 3 and the bracket 4. Further, guide rails 5 are arranged on both sides of the column 6, and scale lines are arranged on the guide rails 5. Further, the central axis of the limit hole a8 coincides with the projection of the central axis of the cylindrical electrode 3 on the base 12, and its main function is to ensure that the wind speed probe 7 is facing the air outlet of the cylindrical electrode 3. Specifically, the bracket 4 here is semicircular. Since the contact surface between the bracket 4 and the cylindrical electrode 3 is a curved surface, the experimenter can replace the cylindrical electrode 3 of different diameters for work. At the same time, the gap between the cylindrical electrode 3 and the bracket 4 is filled by the cushion block 2 to prevent the cylindrical electrode 3 from rolling. After the cylindrical electrode 3 is fixed, the experimenter moves the column 6 to adjust the distance between the cylindrical electrode 3 and the wind speed probe 7 and the needle electrode 1, thereby meeting the experimental requirements, and adjusts the position of the needle electrode 1 on the flat plate 11 according to the diameter of the cylindrical electrode 3 so that it is directly opposite to the center of the cylindrical electrode 3. The main function of the guide rail 5 is to limit the column 6, and at the same time, the distance between the cylindrical electrode 3 and the wind speed probe 7 and the needle electrode 1 is measured by the scale line on the guide rail 5, so as to facilitate the experimenter to move the position accurately. In this embodiment, the column 6 and the bracket 4 are made of ABS material, and the cushion block 2 is made of polyvinyl chloride plastic.

[0030] In this embodiment, a plurality of support columns 13 are disposed on the lower surface of the base 1. Specifically, there are six support columns 6, which are connected to the base 1 via insulating screws, and the base 1 and the support columns 13 are both made of acrylic material.

[0031] The working process of the utility model is as follows:

[0032] S1: Select the size of the cylindrical electrode 3 and the spacer 2;

[0033] S2: Adjust the vertical height of the needle electrode 1 and fix it with a nut 10 so that it is at the same horizontal height as the central axis of the cylindrical electrode 3;

[0034] S3: The needle electrode 1 is connected to a high voltage experimental power supply, and the cylindrical electrode 3 is grounded;

[0035] S4: fix the cylindrical electrode 3 with the spacer 2, align its front end with the front end of the bracket 4, and move the bracket 4 at the same time, so that the distance between the cylindrical electrode 3, the wind speed probe 7 and the needle electrode 1 meets the experimental requirements;

[0036] S5: Fix the wind speed probe 7 behind the air outlet of the cylindrical electrode 3 so that it does not touch the cylindrical electrode 3, and ensure that the center of the wind speed probe 7 is at the same height as the central axis of the cylindrical electrode 3;

[0037] S6: Turn on the power supply and slowly increase the output voltage of the high-voltage power supply until plasma is generated and plasma wind is formed, and the wind speed at the air outlet is measured using the wind speed probe 7;

[0038] S7: The experimenters calculated the plasma wind thrust using a formula based on the obtained data;

[0039] S8: Replace the new cylindrical electrode 3 and the spacer 2, repeat steps S2 to S7, and measure again.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ion wind generation and measurement device, characterized in that: The invention comprises a base (12), a flat plate (11) is arranged at one end of the base (12), a needle-shaped electrode (1) is arranged on the flat plate (11), a wind speed probe (7) and a cylindrical electrode (3) are arranged on the base (12), and the cylindrical electrode (3) is located between the wind speed probe (7) and the needle-shaped electrode (1), the needle-shaped electrode (1) and the cylindrical electrode (3) are used for generating plasma wind in a high-voltage experiment, and the wind speed probe (7) is used for measuring the wind speed at the air outlet of the cylindrical electrode (3).

2. The ion wind generation and measurement device according to claim 1, characterized in that: The flat plate (11) is provided with a plurality of limiting holes b (9), and the needle-shaped electrode (1) is installed in the corresponding limiting hole b (9) via a nut (10).

3. The ion wind generation and measurement device according to claim 2, characterized in that: The limiting holes b (9) are distributed up and down on the flat plate (11).

4. The ion wind generation and measurement device according to claim 3, characterized in that: The base (12) is provided with a plurality of limiting holes a (8), and the wind speed probe (7) is installed in the corresponding limiting holes a (8).

5. The ion wind generation and measurement device according to claim 4, characterized in that: A column (6) is placed on the base (12), a bracket (4) is installed on the top of the column (6), the cylindrical electrode (3) is arranged in the bracket (4), and a cushion block (2) is arranged between the cylindrical electrode (3) and the bracket (4).

6. The ion wind generation and measurement device according to claim 5, characterized in that: Guide rails (5) are provided on both sides of the upright column (6), and scale lines are provided on the guide rails (5).

7. The ion wind generation and measurement device according to claim 6, characterized in that: The central axis of the limiting hole a (8) coincides with the projection of the central axis of the cylindrical electrode (3) on the base (12).

8. The ion wind generation and measurement device according to claim 7, characterized in that: The central axis of the limiting hole a (8) and the central axis of the limiting hole b (9) are perpendicular to each other.

9. The ion wind generation and measurement device according to claim 8, characterized in that: The centers of the needle-shaped electrode (1) and the cylindrical electrode (3) are at the same height.

10. The ion wind generation and measurement device according to claim 1, characterized in that: A plurality of support columns (13) are arranged on the lower surface of the base (12).

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