WO2019076049A1

WO2019076049A1 - Discharge channel regulation method

Info

Publication number: WO2019076049A1
Application number: PCT/CN2018/088359
Authority: WO
Inventors: 雷清泉; 魏艳慧; 李国倡; 郝春成; 张升; 刘会
Original assignee: 青岛科技大学
Priority date: 2018-05-18
Filing date: 2018-05-25
Publication date: 2019-04-25
Also published as: CN108459252A; CN108459252B

Abstract

A discharge channel regulation method, wherein a thin film (2) having a nanopore structure is wrapped on a pin (102) of a needle electrode (1), and a wrapping outlet (3) for a current to pass through is arranged on the pin (102). Discharge channel regulation is achieved by adjusting the angle of the wrapping outlet (3), and discharge direction regulation is more accurate.

Description

Discharge channel regulation method

Technical field

The present application relates to a discharge channel regulation method for implementing control of a discharge channel, and belongs to the field of discharge detection.

Background technique

As shown in FIG. 1, the needle electrode 1 generally includes a needle 101 as a voltage loading end and a pin 102 as a discharge end. The top end of the pin 102 is a needle tip 103; there is also a turning point 104 between the needle 101 and the stitch 102 (a dotted circle in FIG. 1) Part of the reference), the turning point is generally a smooth transition, or a chamfer transition.

In the electric power test, the discharge path of the needle electrode is multi-dimensionally divergent, and the direction is not unique. As shown in Fig. 1, a case of three-dimensional discharge of the needle electrode is shown, and Fig. 2 shows a case of two-dimensional discharge of the needle electrode; such discharge The direction makes the discharge channel uncontrollable, which makes it impossible to detect the discharge in a single direction during the test. Especially in the interface discharge detection, the discharge path is not unique, and the discharge channel cannot be made only at the interface, so the detected signal cannot accurately determine whether it is generated by the test interface.

Summary of the invention

The purpose of the present application is to provide a method for regulating a discharge channel, which is mainly used for controlling the discharge channel of a needle electrode, so that the regulation of the discharge direction becomes more accurate.

The technical solution of the present application is: a method for regulating a discharge channel, wherein a film having a nanopore structure is wrapped on a pin of a needle electrode; a package outlet is left on the pin for current to pass through, and an angle of the package exit is passed. Adjustment to achieve regulation of the discharge channel.

Compared with the prior art, the beneficial effects of the present invention are:

(1) Through the discharge channel regulation method provided by the present application, the regulation of the discharge channel can be realized, so that the discharge direction becomes more accurate and controllable.

(2) The discharge channel regulation method obtained by the present application can be used for the detection of interface discharge, thereby accurately determining whether the discharge is generated by the test interface.

(3) The discharge channel regulation method obtained by the present application can realize the regulation of the discharge channel at any angle.

DRAWINGS

1 is a three-dimensional diagram of a discharge of a needle electrode in the prior art;

2 is a two-dimensional diagram of the discharge of a needle electrode in the prior art;

Figure 3 is an embodiment of a film-to-needle electrode package;

Figure 4 is another embodiment of a film-to-needle electrode package;

Figure 5A is a schematic view of a film;

Figure 5B is a perspective view of Figure 5A;

Figure 6A is an enlarged view of a portion A in Figure 5B;

Figure 6B is a right side view of Figure 6A;

Figure 7A is a schematic view of the first nanohole structure;

Figure 7B is a right side view of Figure 7A;

Figure 8A is a schematic view of a second nanohole structure;

Figure 8B is a right side view of Figure 8A;

Figure 9A is a schematic view of a third nanohole structure;

Figure 9B is a right side view of Figure 9A;

Figure 10 is a schematic view showing the curl of the film;

Number in the figure: 1 pin electrode, 101 pin, 102 pin, 103 pin tip, 104 turn, 2 film, 21 nanopore structure, 201 first nanopore structure, 202 second nanopore structure, 203 third nanopore structure, 211 holes, 3 parcel outlets, 4 pin tip vertical discharge directions, 5 interfaces, 6 secondary partial wraps, 7 discharge channels.

Detailed ways

The technical solutions of the present application are described in detail below with reference to the specific embodiments, but it should be understood that the elements, structures, and features of one embodiment may be beneficially incorporated into other embodiments without further recitation.

In the description of the present application, it should be noted that the terms "first", "second" and the like are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance; "inside" or "outer" are relative The direction in the figure, not the absolute limit of its position; "vertical" mainly refers to the direction of other directions relative to the interface. The embodiments described are merely illustrative of the preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications made by those skilled in the art to the technical solutions of the present application without departing from the spirit of the present application. And improvements are intended to fall within the scope of protection defined by the claims of the present application.

It should be noted that the nanopore structure in the present application refers to a structure having pores on the nanometer level; the needle electrode in the present application is substantially the same as or similar to the structure of the needle electrode described in the background art, and may also be referred to as Electrodes that produce other structures in the form of divergent discharges.

One embodiment of the present application provides a method of regulating a discharge channel, in which a film 2 having a nanopore structure is tightly wrapped around a needle electrode 1, in particular, on a pin 102 of a needle electrode 1, that is, at a discharge end. The outer circumference; a wrapping outlet 3 is left on the stitch 102 for current to pass through, and the adjustment of the angle of the wrapping outlet 3 is achieved to achieve regulation of the discharge channel, as shown in FIGS. 3 and 4.

The film is generally an insulating material, the purpose of which is to prevent the needle electrode 1 from forming a discharge channel in the film 2, thereby blocking multi-dimensional or multi-directional discharge of the needle electrode 1.

As a preferred embodiment, as shown in FIG. 5A to FIG. 9B, the film 2 includes one or more layers of the nanoporous structure 21 in the thickness d1 direction; and the nanopores in the multilayer nanoporous structure. The structures 21 are sequentially arranged along the axial direction of the holes 211, and the positions between the holes 211 of the respective nanohole structures 21 are staggered. Since the holes 211 of the respective layers are not aligned, the hole passage of the multilayered nanoporous structure 21 is finally made to be discontinuous, or the aperture of the through-hole passage becomes smaller, such that the discharge is in the film. The thickness of the thickness d1 of 2 is not connected, which is advantageous for binding the discharge particles in the nanopore structure 21 to prevent discharge.

As a preferred embodiment, the pore diameter d2 of the nanoporous structure 21 may have uniformity or may have non-uniformity, preferably the pore diameter d2 ranges from 20 nm to 200 nm; when there is no uniformity, different pore sizes It is easier to produce, prepare, and cost less, and the pore size within the range can better constrain the discharge particles and prevent discharge.

As a preferred embodiment, the surface of the stitch 102 is substantially perpendicular to the axial direction of the hole of the first layer of the nanohole structure 201 near the stitch 102, so that the film 2 is attached to the surface of the stitch 102; The right side surface of FIG. 6A or 7A is directly attached to the discharge surface of the stitch 102. Thus, the discharge particles from the surface of the stitch 102 are more likely to enter the pores of the first layer of the nanoporous structure and are thereby bound.

As a preferred embodiment, the film 2 is malleable and can be stretched, folded or crimped arbitrarily, and Figure 10 shows a case where it can be curled. When the film 2 has ductility, after the film 2 is wound on the needle electrode 1, the hole 211 of the nanohole structure 21 is also bent correspondingly according to the direction in which the film is stretched, so that the hole channel is longer and more tortuous. It is more advantageous to constrain the discharge particles; when the film 2 can be curled or folded, when a film 2 does not constrain the discharge particles well, the purpose of preventing discharge can be achieved by crimping the multilayer film on the needle electrode 1 The discharge channel is formed only at the package exit 3.

As a preferred embodiment, the thickness d1 of each layer of the film is 60 μm or less, and may be, for example, 60 μm, 58 μm, 55 μm, 52 μm, 50 μm, or the like. At the thickness, the film 2 appears to be relatively soft and tough, and is easy to wrap and wrap; when each film 2 is too thick, it is inconvenient to fit and entangle the film 2 with the needle electrode 1.

As a preferred embodiment, the tip of the needle tip 103 and the wrapping outlet 3 are twice wrapped; by such a secondary wrapping, it is possible to achieve a discharge behavior that prevents divergence even if a higher voltage is applied.

In the present application, the number of layers of the film 2 and the total thickness of the package can be selected according to the magnitude of the voltage applied to the needle electrode 1.

In the present application, the film 2 can be used to select the wrapping direction and the wrapping position of the needle electrode 1 according to the desired discharge path, thereby achieving control of the package outlet 3, thereby realizing regulation of the discharge channel, especially The choice of the wrapping direction and the wrapping position of the stitch 102.

For example, as shown in FIG. 3, when only the discharge of the vertical channel is required, at least the stitch 102 (discharge end) of the needle electrode 1 is rotationally wrapped, and the package outlet 3 at the tip 103 is parallel to the vertical discharge direction 4 of the needle tip. That is, it is perpendicular to the interface 5 in FIG. When the applied voltage is higher, since the discharge at the tip 103 is relatively concentrated, as a preferred embodiment, the second partial wrapping of the tip 103 and the vicinity of the parcel outlet 3 can be performed on the basis of one parcel 6 to avoid Form other discharge channels.

For example, as shown in FIG. 4, when it is only necessary to discharge along the interface 5, at least the package 102 can be wrapped to make the package outlet 3 at an angle θ with the vertical discharge direction 4, and the range of θ can be, but is not limited to, 10°-60°, for example, 15°, 18°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 70°, 90°, etc., by controlling the package The angle θ is formed to form a unique discharge channel 7 along the interface.

There is a turning point 104 between the needle 101 of the needle electrode and the stitch 102; as a preferred embodiment, when the needle electrode 1 is wrapped, the turning point 104 is wrapped to achieve a smooth transition, avoiding the turning point 104 Discharge (the turning point 104 is shown in the dashed circle in Figures 3 and 4).

The invention is described in detail below with reference to the embodiments, which are only to be construed as the preferred embodiment of the invention.

Example 1

As shown in FIG. 3, a method for regulating a discharge channel, a film 2 having a multi-layer nanoporous structure 201 is tightly wrapped on a pin 102 of a needle electrode 1; a package outlet 3 is left on the pin 102 for current to pass through, The adjustment of the angle of the package outlet 3 achieves the regulation of the discharge channel.

In this embodiment, a wrapping method for performing vertical channel discharge is performed, and the pin 102 and the turning portion 104 of the needle electrode 1 are rotated and wrapped, and the wrapping outlet 3 at the needle tip 103 is parallel with the vertical discharge direction 4 of the needle tip, thereby achieving the interface. 5 for the purpose of vertical discharge.

Example 2

As shown in FIG. 3, in order to ensure that the present application can accommodate a higher loading voltage, the present embodiment is based on the first embodiment, and on the basis of the primary package in the first embodiment, the tip 103 and the package outlet 3 are provided. A secondary partial wrap 6 is also made nearby to increase the thickness of the wrap to avoid formation of other discharge channels.

Example 3

As shown in FIG. 4, a discharge channel regulating method encloses a film 2 having a multi-layer nanopore structure on a pin 102 of a needle electrode 1, that is, an outer circumference of a discharge end; and a package outlet 3 is left on the pin 102 for current to pass. Through the adjustment of the angle of the package outlet 3, the regulation of the discharge channel is achieved.

In this embodiment, the wrapping method is performed along the interface. When the stitch 102 and the turning portion 104 are wrapped, the formed package outlet 3 is formed at an angle of 35° with the vertical discharge direction 4, that is, θ=35°, and is controlled. The angle θ formed by the wrap forms a unique discharge channel 7 along the interface.

When a voltage is applied to the needle 101, discharge is performed through the needle tip 103, the discharge channel is restrained at the package outlet 3, and after entering the interface 5, the discharge channel 7 is formed along the interface 5.

Example 4

As shown in FIGS. 5A to 9B, this embodiment exemplifies a structure of a film which can be any of the films 2 described in any of Examples 1-3. 5A is a schematic view of the film 2, FIG. 5B is a perspective view of FIG. 5A and a part A thereof is taken; FIG. 6A is an enlarged view of a portion A in FIG. 5B, and FIG. 6B is a right side view of FIG. 7A, 8A, and 9A are the split views of Fig. 6A, respectively, and Figs. 7B, 8B, and 9B are right side views corresponding to Figs. 7A, 8A, and 9A, respectively.

The film 2 in this embodiment has a three-layer nanoporous structure 21, that is, a first nanohole structure 201, a second nanohole structure 202, and a third nanohole structure 203, as shown in FIGS. 6A and 6B; however, it is understood that The number of layers of the nanoporous structure of the film 2 is not limited to three layers, and may be, for example, 1 layer, 2 layers, 4 layers, 5 layers, or the like. As shown in FIG. 7A and FIG. 7B, the first nanohole structure 201 has a plurality of long holes 211 having a diameter d2 of nanometers, and the apertures d2 of the long holes 211 may be equal or different, but in order to control manufacturing costs, It is not necessary to require the apertures d2 to be equal, and it is only necessary to control the aperture d2 to be in the range of 20 nm to 200 nm. As shown in FIG. 8A, FIG. 8B, FIG. 9A and FIG. 8B, the second nanopore structure 202 and the third nanopore structure 203 are also long holes 211 having a plurality of apertures d2 in the nanometer range, and the aperture d2 ranges from 20 nm to ～ 200nm.

The first nanohole structure 201, the second nanohole structure 202 and the third nanohole structure 203 are pressed together in the axial direction of the holes, and the holes of each layer of the nanohole structure are staggered to form a map. The engagement pattern between the holes shown in 6B; in FIG. 6B, some of the holes may extend from the first nanohole structure 201 to the third nanohole structure 203 (the hole channels are generally narrowed), while the holes are It is blocked midway and cannot penetrate; the film 2 is formed in such a manner that the total thickness d3 of the three-layer nanoporous structure is the thickness d1 of the film 2, where d1 ≤ 60 μm, for example, 50 μm, 45 μm, 40 μm, 30 μm, 25 μm and many more.

When the film 2 is wrapped with the needle electrode 1, the radial surface of the first nanohole structure 201 is preferably attached to the discharge surface of the pin 102, that is, the axial direction of the hole 211 is perpendicular to the discharge surface, which may be more The trapped particles are well bound in the nanopore structure.

Claims

A method for regulating a discharge channel, characterized in that a film (2) having a nanopore structure is wrapped on a pin (102) of a needle electrode (1), and a package outlet (3) is left on the pin (102) for current Through the adjustment of the angle of the package outlet (3), the regulation of the discharge channel is achieved.
The method of regulating a discharge channel according to claim 1, wherein the film (2) comprises one or more layers of nanoporous structures (21) in the thickness d1 direction; and in the case of a multilayer nanoporous structure, each The layered nanoporous structures (21) are sequentially arranged along the axial direction of the holes (211), and the positions between the holes (211) of the respective nanoporous structures (21) are staggered.
The method of regulating a discharge channel according to claim 2, wherein the pore diameter d2 of the nanopore structure (21) has uniformity or non-uniformity, and the pore diameter d2 ranges from 20 nm to 200 nm.
The method of regulating a discharge channel according to claim 2 or 3, wherein the surface of the stitch (102) is substantially perpendicular to the axial direction of the hole of the first layer of the nanohole structure (201) adjacent to the stitch (102). The film (2) is attached to the surface of the stitch (102).
The discharge channel regulating method according to any one of claims 1 to 3, characterized in that the film (2) has ductility and can be arbitrarily stretched, folded or curled.
The discharge channel regulating method according to any one of claims 1 to 3, wherein a thickness d1 of each layer of the film is 60 μm or less.
The method for regulating a discharge channel according to any one of claims 1 to 3, characterized in that the top end of the stitch (102) is a needle tip (103), and the vicinity of the needle tip (103) and the package outlet (3) is twice wrapped. .
The method for regulating a discharge channel according to any one of claims 1 to 3, characterized in that the number of layers of the film (2) and the total thickness of the package are selected according to the magnitude of the voltage applied to the needle electrode (1); According to the required discharge route, the film (2) is used to select the wrapping direction and the wrapping position of the needle electrode (1), thereby achieving control of the package outlet (3).
The method of regulating a discharge channel according to any one of claims 1 to 3, characterized in that the needle electrode (101) and the stitch (102) of the needle electrode have a turning point (104); When the corner (104) is wrapped.
The method of regulating a discharge channel according to any one of claims 1 to 3, characterized in that, when the discharge of the vertical channel is performed, at least the stitch (102) of the needle electrode (1) is rotated and wrapped, and the needle tip (103) The package exit (3) is parallel to the vertical discharge direction (4) of the tip;

When discharging along the interface (5), at least the package (102) is wrapped, and the package outlet (3) is at an angle θ with the vertical discharge direction (4), and the unique angle is formed by controlling the angle θ formed by the package. Discharge channel along the interface (7).