CN110996485B - Method for enabling electric performance of horizontal air outlet directions of two sides of ion rod to be consistent under same vertical distance - Google Patents
Method for enabling electric performance of horizontal air outlet directions of two sides of ion rod to be consistent under same vertical distanceInfo
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- CN110996485B CN110996485B CN201911416419.4A CN201911416419A CN110996485B CN 110996485 B CN110996485 B CN 110996485B CN 201911416419 A CN201911416419 A CN 201911416419A CN 110996485 B CN110996485 B CN 110996485B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/06—Carrying-off electrostatic charges by means of ionising radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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Abstract
一种使离子棒在同一垂直距离下两侧水平出气方位消电性能一致的方法，属静电消除领域。其电极座中的气道由依次连接的进气段、混合段、收缩段、喉口和扩张段组成；扩张段末端构成电极座气道出口；气道出口为一个喇叭状开口结构；其电极座的气道，采用先收缩后扩张的气流加速结构模式，缩小了气道容积，起到加速气道出口处气流流速的作用；由于气道出口喷射角度的增大，能获得更宽广的消电范围。通过改变电极座气道结构，来改善各放电极组件离子化气流的输出状态，使离子棒在沿其长度方向上各个放电极组件的输出气量均匀，在同一垂直测试距离上，离子棒两侧水平方向上各个放电极组件的气流运动状态一致，能够取得更均衡、更快速的静电消除效果。
A method for making the de-staticizing performance of the horizontal air outlet directions on both sides of an ion rod consistent at the same vertical distance belongs to the field of static elimination. The airway in the electrode seat is composed of an air intake section, a mixing section, a contraction section, a throat and an expansion section connected in sequence; the end of the expansion section constitutes the airway outlet of the electrode seat; the airway outlet is a trumpet-shaped opening structure; the airway of the electrode seat adopts an airflow acceleration structure mode of first contraction and then expansion, which reduces the airway volume and plays a role in accelerating the airflow velocity at the airway outlet; due to the increase in the injection angle of the airway outlet, a wider de-staticizing range can be obtained. By changing the airway structure of the electrode seat, the output state of the ionized airflow of each discharge electrode assembly is improved, so that the output gas volume of each discharge electrode assembly along the length direction of the ion rod is uniform, and at the same vertical test distance, the airflow movement state of each discharge electrode assembly in the horizontal direction on both sides of the ion rod is consistent, which can achieve a more balanced and faster static elimination effect.
Description
Technical Field
The invention belongs to the field of static electricity elimination, and particularly relates to a method for enabling the static electricity elimination performance of a rod-shaped static electricity elimination device to be consistent.
Background
The ion bar is a neutralization device for neutralizing the static charge on the surface of a charged object by conveying positive and negative ions to the charged object. The mode of conveying ions is basically divided into two modes, one mode is that the ions are conveyed to the surface of a charged object under the action of the comprehensive electric field force of a high-voltage electric field generated by a discharge electrode and a charge field formed by opposite charges on the surface of the charged object, the biggest defect of the mode is that the conveying distance of the ions is short and the conveying capacity of the ions is obviously weakened when the conveying distance exceeds 15cm, and the other mode is that external compressed air (also called compressed air flow for short) is utilized to blow out from the vicinity of the discharge electrode, so that positive and negative ions generated at the discharge electrode are quickly conveyed to the surface of the charged object.
For example, the chinese patent application "a high power ion bar" (grant date: 2012.03.07, grant number: CN 202160327U) filed by the present inventor before, namely, a static electricity eliminating device adopting the second type of operation mode. The device adopts a long-strip-shaped rod-shaped structure, compressed air externally input through a field compressed air main pipe enters from one end of an ion rod, is transmitted to an air outlet hole at each discharge electrode through an air vent or an air passage arranged in the rod body, and is output outwards to form air flow, so that positive and negative ions generated at the discharge electrode are rapidly conveyed to the surface of a charged object.
In the practical use process, the structural design of the ion rod discharge electrode assembly has great influence on the conveying state of compressed air flow, and further has important influence on the electricity eliminating performance of the ion rod.
The existing ion rod can generate the following phenomena due to unreasonable structural design of the discharge electrode assembly:
1. as shown in fig. 1, compressed air (labeled as compressed air flow input a in the figure) is input to the ion rod through the total air inlet end (labeled as air source joint b with a throttle valve in the figure), is conveyed to each discharge electrode assembly c through the total air supply pipe, and is output outwards through the air outlet hole at the discharge electrode to form air flow.
When the total compressed air input pressure is fixed, the output air flow at each air outlet hole is uneven due to the fact that one compressed air pressure gradient is reduced along the length direction of the ion rod, the output air flow at the air outlet hole close to the total air inlet end (the left end in the figure) is large, the output air flow at the air outlet hole far from the total air inlet end is small, so that the electricity eliminating performance of two ends (namely one end close to the total air inlet end and the other end far from the total air inlet end in the figure) of the ion rod under the same vertical position (namely the distance 300 in the figure) is inconsistent, namely the left end and the right end of the ion rod in the figure), and the situation that the electricity eliminating time is faster or slower (the positive and negative ion quantities received by the first flat charge tester P1 close to the left in the figure are more than the positive and negative ion quantities received by the third flat charge tester P3 close to the right in the figure) is embodied, and the balance voltage is high;
2. As shown in fig. 2, at a certain total compressed air input pressure, the output air flow state at the same discharge electrode assembly is disordered, and at the same vertical test distance, due to the different air flow speeds of the two ends of the ion rod in the horizontal direction (meaning that the positive and negative ion amounts received by the front plate charge tester P4 and the rear plate charge tester P5 are not equal or similar in the figure), the power-off time is inconsistent;
3. the consumption of air flow is large, the pressure drop of the air flow is excessive, the air flow speed is reduced, and the power-off time is slow.
More specifically, as shown in fig. 9a to 9c and 10, the conventional electrode holder 6 has a circular or square through air passage 3-0, and no air flow accelerating structure is provided at the end of the through air passage (this is also called the through air passage). The problem that square straight-through air flue easily caused is because the cross section of drain electrode is circular, and the cross section of air flue is square, and the air current flows from 4 right angles in square hole, and air current state is disordered, and air current distribution is inhomogeneous, leads to some position air currents very weak, and some position air currents are stronger, causes the extinction performance deviation in corresponding position to be great, and the position extinction speed if the air current is weaker is very slow, and the position extinction speed that the air current is stronger is very fast, and balanced voltage fluctuation is great. For the circular through air passage, the air flow cannot be accelerated, so that the electricity eliminating speed cannot be improved, and although the air flow distribution of the circular through air passage in all directions is uniform, a wider electricity eliminating range cannot be obtained due to the limitation of the through structure.
Disclosure of Invention
The invention aims to provide a method for enabling the electric performance of horizontal air outlet directions at two sides of an ion rod to be consistent under the same vertical distance. The output state of the ionized air flow is improved by optimizing the air inlet structure, the air passage structure and the air outlet structure, so that the output air quantity of the ion rod in the length direction is uniform, the air flow motion states of the two sides of the ion rod in the horizontal direction are consistent in the same vertical test distance, the air flow consumption can be reduced under the same air source pressure, the air flow speed is improved, the more balanced and faster static electricity eliminating effect is achieved, and the larger electricity eliminating range of the angle is obtained.
The technical scheme of the invention is to provide a method for enabling the horizontal air outlet azimuth of the two sides of an ion rod to have consistent electricity eliminating performance under the same vertical distance, which is characterized in that:
a plurality of discharge electrode assemblies are arranged on the ion rod along the length direction of the ion rod; the discharge electrode assembly comprises a discharge electrode, an electrode sleeve and an electrode seat, wherein the discharge electrode is sleeved with the electrode sleeve, the head end of the electrode sleeve is connected with the electrode seat, an air passage arranged along a longitudinal central axis is arranged in the electrode seat, the air passage comprises an air inlet section, a mixing section, a contraction section, a throat opening and an expansion section which are sequentially connected, and the tail end of the expansion section forms an air passage outlet of the electrode seat;
the air passage of the electrode seat adopts an air flow accelerating structure mode of firstly shrinking and then expanding, reduces the volume of the air passage, plays a role in accelerating the air flow velocity at the outlet of the air passage, and can obtain a wider power elimination range due to the increase of the injection angle at the outlet of the air passage;
The structure of the electrode seat air passage is changed to improve the output state of ionized air flow of each discharge electrode assembly, so that the output air flow of each discharge electrode assembly in the length direction of the ion rod is uniform, the air flow motion states of each discharge electrode assembly in the horizontal directions on two sides of the ion rod are consistent in the same vertical test distance, the air flow consumption can be reduced under the same air source pressure, the air flow speed is improved, and a more balanced and faster static electricity eliminating effect is obtained.
Specifically, in the air passage, the expansion angle α of the expansion section is smaller than the contraction angle β of the contraction section.
Further, the curvature radius of the air passage contraction section and the expansion section is the same as that of the laryngeal opening.
The whole structure of the discharge electrode is needle-shaped, cylindrical rod-shaped or circular tube-shaped, the discharge electrode is inserted into the electrode sleeve, and the discharge electrode is in interference fit with the electrode sleeve.
The whole structure of the electrode sleeve is a cylindrical structure, and the head end of the electrode sleeve is inserted into the electrode seat.
The electrode sleeve is inserted into the front end part of the electrode seat, four electrode sleeve extending arms which are arranged at equal angles are arranged at the front end part of the electrode seat, adjacent gaps are arranged between the two adjacent electrode sleeve extending arms, the middle part of the electrode sleeve is protruded to be in a cylinder table shape, four electrode sleeve air inlet gaps which are separated at equal angles are arranged at the bottom of the protruded cylinder table, the four electrode sleeve air inlet gaps are correspondingly communicated with the adjacent gaps between the four electrode sleeve extending arms respectively, and compressed air flows into an air passage in the electrode seat through the air inlet gaps and the adjacent gaps.
The electrode seat comprises an air passage arranged along a longitudinal central axis, four electrode seat peripheral convex ribs are arranged at the periphery of a horn-shaped opening at the front part of the electrode seat in an equiangular separation mode, an external thread mounting column is arranged at the rear part of the electrode seat, the end face of an air outlet of the electrode seat, the top face of the external thread mounting column and the end face of the lower part of a protruding cylinder table of the electrode sleeve are parallel to each other, and the discharge electrode is located at the center of the air passage.
Further, the cross section of the air passage along the transverse axis is circular.
Further, the airway structure determines the parameters according to the following two formulas:
Wherein D Air outlet is the diameter of the gas outlet of the end face of the electrode holder, D Radial section of gas outlet end face electrode is the diameter of the radial section of the discharge electrode of the plane of the end face of the gas outlet of the electrode holder, D Waiting for oral cavity is the diameter of the throat, D radial section of electrode at laryngeal end face is the diameter of the radial section of the discharge electrode of the plane of the end face of the throat of the electrode holder, P Into (I) is the pressure of the gas flow at the inlet of the air passage contraction section of the electrode holder, n is the number of gas outlets, and S Feeding in is the area of the gas inlet of the air cavity of the ion rod.
Compared with the prior art, the invention has the advantages that:
1. in the technical scheme, the area of the air outlet of the air channel is optimally controlled, so that the output air flow of each air outlet in the length direction of the ion rod is uniform and stable, the electricity eliminating performance of the two ends of the ion rod at the same vertical position is consistent, the electricity eliminating time is consistent, and a wider electricity eliminating range can be obtained.
2. In the technical scheme, the air passage of the electrode seat is circular along the transverse axial section, and the end face of the air outlet, the top face of the threaded mounting column of the electrode seat and the end face of the lower part of the protruding cylinder of the electrode sleeve are parallel to each other, so that the discharge electrode is positioned at the center of the air passage, the output airflow at the position of the two sides of the ion rod is ensured to have consistent flowing state, and the airflow speed is the same on the horizontal directions of the two sides of the ion rod and the electricity eliminating performance is consistent on the same vertical test distance.
3. Compared with the existing straight-through type air passage design, the technical scheme greatly reduces the air passage volume, and the air flow accelerating structure which is firstly contracted and then expanded is arranged.
Drawings
FIG. 1 is a schematic illustration of a test in the length direction of an ion rod;
FIG. 2 is a schematic illustration of a test on horizontal sides of an ion bar;
FIGS. 3a and 3b are schematic views showing the structure of the discharge electrode of the present invention;
FIGS. 4a to 4d are schematic views showing the structure of the electrode sheath of the present invention;
FIGS. 5a to 5d are schematic views showing the structure of the electrode holder of the present invention;
FIG. 6 is a schematic view of the structure of the air passage inside the electrode holder of the present invention;
FIG. 7 is a schematic view of a partial structure of an airway constriction and expansion segment of the present invention;
FIG. 8 is a schematic view of the combined structure of the discharge electrode assembly of the present invention;
FIG. 9a is a schematic view of a conventional electrode holder;
FIG. 9b is a cross-sectional view in the direction A of FIG. 9 a;
FIG. 9c is a cross-sectional view in the B direction of FIG. 9 a;
Fig. 10 is a schematic view of a combined structure of a conventional discharge electrode assembly.
In the figure, a is compressed air flow input, b is an air source connector with a throttle valve, c is a discharge electrode assembly, P1 to P3 are first to third flat plate charge testers, P4 is a front flat plate charge tester, and P5 is a rear flat plate charge tester;
1 is a discharge electrode, 2 is an electrode sleeve, 2-1 is an electrode sleeve air inlet gap, 2-2 is an electrode sleeve extending arm, 3 is an electrode seat, 3-1 is an electrode seat air channel air inlet section, 3-2 is an electrode seat air channel mixing section, 3-3 is an electrode seat air channel contraction section, 3-4 is an electrode seat air channel throat, 3-5 is an electrode seat air channel expansion section, 3-6 is an electrode seat external thread mounting column, 3-7 is an electrode seat peripheral convex rib, 3-8 is an air channel 4 is an existing discharge electrode, 5 is an existing discharge electrode clamp spring, 6 is an existing electrode seat, and 3-0 is a straight-through air channel;
Alpha is a divergence angle, beta is a contraction angle, D1 is a throat diameter, D2 is a radial cross-sectional diameter of the discharge electrode of a plane where the end face of the throat is located, D3 is a radial cross-sectional diameter of the discharge electrode of a plane where the end face of the gas outlet of the electrode holder is located, and D4 is a gas outlet diameter of the electrode holder.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The technical scheme of the invention provides a method for enabling the electric performance of horizontal air outlet directions at two sides of an ion rod to be consistent under the same vertical distance, which is characterized in that:
The ion rod comprises a plurality of discharge electrode assemblies arranged on the ion rod along the length direction of the ion rod, wherein each discharge electrode assembly comprises a discharge electrode 1, an electrode sleeve 2 and an electrode seat 3, the discharge electrode is sleeved with the electrode sleeve, the head end of the electrode sleeve is connected with the electrode seat, an air passage 3-8 arranged along the longitudinal central axis is arranged in the electrode seat, the air passage comprises an air inlet section 3-1, a mixing section 3-2, a contraction section 3-3, a throat opening 3-4 and an expansion section 3-5 which are sequentially connected, the tail end of the expansion section forms an air passage outlet of the electrode seat, and the air passage outlet is of a horn-shaped opening structure.
In the technical scheme of the invention, the air passage of the electrode seat adopts an air flow accelerating structure mode of firstly shrinking and then expanding, thereby reducing the volume of the air passage, playing the role of accelerating the air flow velocity at the outlet of the air passage, and obtaining a wider power elimination range due to the increase of the jet angle at the outlet of the air passage.
According to the technical scheme, the structure of the air passage of the electrode seat is changed to improve the output state of ionized air flow of each discharge electrode assembly, so that the output air flow of each discharge electrode assembly in the length direction of the ion rod is uniform, the air flow motion states of each discharge electrode assembly in the horizontal directions on two sides of the ion rod are consistent in the same vertical test distance, the air flow consumption can be reduced under the same air source pressure, the air flow speed is improved, and a more balanced static electricity eliminating effect is achieved.
Specifically, in the technical scheme of the invention, the structure size of the discharge electrode 1 is matched with that of the electrode sleeve and the electrode seat, and the discharge electrode can be in a needle shape, a cylindrical rod shape or a circular tube shape, and the needle-shaped structure is taken as an example for illustration in the specification, and the discharge electrode is specifically shown in fig. 3a and 3 b.
The diameter of the discharge electrode may be slightly larger than the inner diameter of the electrode sheath 2 or the electrode sheath may be provided with internal depressions such that there is an interference fit between the discharge electrode and the depressions in the electrode sheath (see fig. 4 c).
Referring to fig. 4a to 4d (fig. 4a is a bottom view of an electrode sleeve, fig. 4B is a cross-sectional view of a section A-A of fig. 4a, fig. 4c is a schematic view of an external structure of the electrode sleeve, and fig. 4d is a perspective view of the electrode sleeve), in this embodiment, the lower portion of the electrode sleeve 2 is 4 electrode sleeve extending arms 2-2 (abbreviated as metal arms) extending forward, the 4 metal arms are identical in structural size and are arranged at equal angles in the same circular end face, the cylinder bottom of the middle part of the electrode sleeve is provided with 4 electrode sleeve air inlet gaps 2-1 (abbreviated as air inlet gaps) separated from each other at equal angles, the 4 air inlet gaps are identical in structural size, the 4 air inlet gaps are communicated with gaps between the 4 metal arms, and the widths of the respective gaps are identical.
Referring to fig. 5a to 5d (fig. 5a is a schematic view of a bottom view structure of an electrode holder, fig. 5b is a schematic view of a cross section A-A in fig. 5a, fig. 5c is a schematic view of a side view structure of the electrode holder, and fig. 5d is a schematic view of a perspective view of the electrode holder), in the technical scheme of the present invention, the electrode holder 3 includes an air channel 3-8 disposed along a longitudinal central axis, four peripheral ribs 3-7 (abbreviated as peripheral ribs) of the electrode holder are disposed at equal angles at a horn-shaped opening and around the opening at the front of the electrode holder, and an external thread mounting post 3-6 (abbreviated as external thread mounting post) of the electrode holder is disposed at the rear of the electrode holder, and the electrode holder is mechanically mounted with the ion rod air cavity via the external thread mounting post.
As can be seen from fig. 6 and 7, the air passage of the electrode holder is circular along the transverse axis, and the air passage of the electrode holder includes an air inlet section 3-1 (air inlet section for short), an air mixing section 3-2 (mixing section for short), an air contracting section 3-3 (contracting section for short), an air throat 3-4 (throat) and an air expanding section 3-5 (expanding section for short) of the electrode holder, which are sequentially connected, and the following description is given respectively:
1. intake section 3-1:
The air inlet section is used for introducing compressed air flow entering the air inlet gap of the electrode sleeve, so as to prepare for air flow mixing and acceleration of the contraction section.
2. Mixing section 3-2:
Smooth transition is needed between the air inlet section 3-1 and the contraction section 3-3 so as to avoid the influence on the service life of the electrode seat under a high-voltage electric field caused by the concentration of internal stress of an air passage of the electrode seat during processing.
The transition between the inlet section and the convergent section is the mixing section 3-2.
The mixing section has an outwardly convex structure with respect to the air passage, so that a certain vortex is generated therein, which has a mixing effect on the compressed air flowing in from the 4 air intake gaps, so that the compressed air uniformly covers the entire surface of the discharge electrode.
3. Shrink section 3-3:
the function of the constriction section is to accelerate the compressed air flow rate of the inlet section. The transition from the constriction to the laryngeal opening should be smooth and gentle.
The contraction angle beta shown in fig. 7 can affect the acceleration of the air flow, and excessive contraction angle beta can easily cause serious vortex in the air passage to make the air flow extremely unstable, and finally cause unstable electricity eliminating performance (the electricity eliminating speed is faster and slower and the voltage is balanced and is high and low), and excessive contraction angle beta can cause excessive acceleration distance of the air flow and excessive thickness of the boundary layer, and increase energy loss. For a stable acceleration of the gas flow, the contraction angle β is generally preferably between 30 ° and 90 °, preferably 90 °.
4. Laryngeal inlet 3-4:
in order to accelerate the airflow flowing speed to the greatest extent, the contraction section, the expansion section and the laryngeal opening are set to be the same curvature radius, namely the length of the laryngeal opening is zero.
5. Expansion section 3-5:
The structure of the expansion section has great influence on the ion conveying state, the expansion angle alpha is too large, the jet flow diffusion is easy to be fast, the power elimination speed is slow under the vertical distance, the expansion angle alpha is too small, the gas channel is too long, the boundary layer is too thick, and large pressure loss is generated, so that the power elimination range is reduced. In order to ensure the stability of the air flow, the expansion angle alpha is required to be smaller than the shrinkage angle beta, and in the technical scheme, the expansion angle alpha is preferably 40 degrees.
The ion rod is typically used under conditions of standard atmospheric pressure (about 0.1 MPa), 5 ℃ to 35 ℃ and the supply pressure of compressed air in a typical factory is typically 0.1MPa to 0.6MPa.
Under the use condition, the relation between the diameter of the air outlet of the end face of the electrode seat and the diameter of the throat opening can be obtained according to a compressible fluid dynamic formula:
In the formula 1, D Air outlet is the diameter of an air outlet of the end face of the electrode seat, D Radial section of gas outlet end face electrode is the diameter of a radial section of a discharge electrode of a plane where the end face of the air outlet of the electrode seat is located, D Waiting for oral cavity is the diameter of a throat, D radial section of electrode at laryngeal end face is the diameter of the radial section of the discharge electrode of the plane where the end face of the throat of the electrode seat is located, and Ma Air outlet is the Mach number of air flow of the air outlet.
Because the ion rod is used under the standard atmospheric pressure, the static pressure of the air outlet is 0.1MPa, and according to the compressible fluid dynamic formula, the relationship between Mach number of the air outlet air flow and the air flow pressure at the inlet is as follows:
in the formula 2, P Into (I) is the air flow pressure at the inlet of the air passage contraction section of the electrode seat, and the air flow speed of the air outlet of the electrode seat is between Mach 0 and Mach 1.83 according to the use condition of the ion rod, namely the air flow pressure input by the ion rod must be greater than 0.1MPa to be normally used.
Bringing equation 2 into equation 1 yields:
It follows that the design of the airway structure must take into account the pressure of the airflow.
Bringing 1.83 (ideal gas flow rate) into equation 1, or bringing 0.6MPa (gas flow pressure at the inlet of the electrode holder airway constriction) into equation 3, can result in:
in order to ensure that the air outlet quantity of each air outlet of the ion rod is uniform and stable, the area of the air outlet of the electrode seat accords with the following formula:
(S Out of -S Radial section of gas outlet end face electrode )×n＜S Feeding in equation 5 is:
S Out of in the formula 5 and the formula 6 are the area of the gas outlet end face of the electrode seat, S Radial section of gas outlet end face electrode is the radial sectional area of the discharge electrode on the plane of the gas outlet end face, n is the number of gas outlets, and S Feeding in is the gas inlet area of the gas cavity of the ion rod.
Thus, the electrode holder gas outlet diameter and throat diameter can be designed by equations 4 and 6.
In the technical scheme of the invention, the specific combined structure of the discharge electrode 1, the electrode sleeve 2 and the electrode holder 3 is shown in fig. 8, and 4 extending arms 2-2 of the electrode sleeve are inserted into the electrode holder threaded mounting columns 3-6.
Particularly, in the technical scheme of the invention, the end face of the gas outlet of the electrode seat, the top face of the threaded mounting column and the lower end face of the protruding cylinder of the electrode sleeve are parallel to each other, so that the discharge electrode is positioned at the center of the gas passage. The compressed air flows into the air passage of the electrode holder through the 4 electrode sleeve air inlet gaps 2-1.
Examples:
the discharge electrode assembly (shown in fig. 8) manufactured by adopting the technical scheme of the invention is subjected to a comparison test with the existing discharge electrode assembly (shown in fig. 9 and 10), and the obtained comparison test data are shown in table 1:
Table 1, comparative test data:
As can be seen from the above comparative data:
1. Under the same test conditions, the pressure drop of the ion rod adopting the technical scheme is obviously smaller than that of a comparison product, and the pressure loss of the ion rod is smaller after the technical scheme is adopted.
2. Under the same test conditions, the electricity eliminating speed of the sample rod is obviously faster than that of a comparison product.
3. Under the same test conditions, the balance voltage consistency and stability of the sample rod are superior to those of a comparison product.
The invention adopts the technical scheme that the air passage of the electrode seat sequentially comprises an air inlet section, a mixing section, a contraction section, a throat opening and an expansion section, and the air inlet structure, the air passage structure and the air outlet structure are optimized to improve the output state of ionized air flow, so that the output of the ion rod along the length direction of the ion rod is uniform, the same vertical test distance and the air flow motion state at the two sides in the horizontal direction are uniform, the air flow consumption can be reduced under the same air source pressure, the air flow speed is improved, and a more balanced static electricity eliminating effect is obtained.
The invention can be widely used in the field of designing and manufacturing air source type ion bars.
Claims (9)
1. A method for enabling the horizontal air outlet directions of two sides of an ion rod at the same vertical distance to be consistent in electricity eliminating performance comprises the steps of arranging a plurality of discharge electrode assemblies on the ion rod along the length direction of the ion rod, wherein each discharge electrode assembly comprises a discharge electrode, an electrode sleeve and an electrode seat, the discharge electrode is sleeved with the electrode sleeve, and the head end of the electrode sleeve is connected with the electrode seat, and the method is characterized in that:
An air passage arranged along the longitudinal central axis is arranged in the electrode seat;
The air passage comprises an air inlet section, a mixing section, a contraction section, a throat and an expansion section which are connected in sequence;
the tail end of the expansion section forms an electrode seat air passage outlet;
the air passage outlet is of a horn-shaped opening structure;
Wherein the airway structure determines the parameters according to the following two formulas:
Wherein D Air outlet is the diameter of the gas outlet of the end face of the electrode holder, D Radial section of gas outlet end face electrode is the diameter of the radial section of the discharge electrode of the plane of the end face of the gas outlet of the electrode holder, D Waiting for oral cavity is the diameter of the throat, D radial section of electrode at laryngeal end face is the diameter of the radial section of the discharge electrode of the plane of the end face of the throat of the electrode holder, P Into (I) is the pressure of the gas flow at the inlet of the air passage contraction section of the electrode holder, n is the number of gas outlets, and S Feeding in is the area of the gas inlet of the air cavity of the ion rod;
the air passage of the electrode seat adopts an air flow accelerating structure mode of firstly shrinking and then expanding, reduces the volume of the air passage, plays a role in accelerating the air flow velocity at the outlet of the air passage, and can obtain a wider power elimination range due to the increase of the injection angle at the outlet of the air passage;
the ionization gas flow output states of all discharge electrode assemblies are improved by changing and optimizing the gas inlet structure, the gas channel structure and the gas outlet structure of the gas channel of the electrode seat, so that the output gas flow of all discharge electrode assemblies in the length direction of the ion rod is uniform, the gas flow motion states of all discharge electrode assemblies in the horizontal directions on two sides of the ion rod are consistent in the same vertical test distance, the gas flow consumption can be reduced under the same gas source pressure, the gas flow speed is improved, more balanced and faster static electricity eliminating effects are obtained, and a larger electricity eliminating range of angles is obtained.
2. The method of claim 1, wherein the expansion angle α of the expansion section is smaller than the contraction angle β of the contraction section in the air passage.
3. The method for enabling the electrical properties of the horizontal outlet orientations of the two sides of the ion rod to be consistent under the same vertical distance as in claim 1, wherein the curvature radiuses of the air passage contraction section, the expansion section and the throat are the same.
4. The method for enabling the horizontal gas outlet directions of the two sides of the ion rod to have consistent electricity eliminating performance under the same vertical distance as in claim 1, wherein the overall structure of the discharge electrode is in a needle shape, a cylindrical rod shape or a circular tube shape, and the discharge electrode is inserted into the electrode sleeve.
5. The method for making the horizontal gas outlet direction of the two sides of the ion rod at the same vertical distance uniform according to claim 1 or 4, wherein the discharge electrode is in interference fit with the electrode sleeve.
6. The method for enabling the horizontal gas outlet directions of the two sides of the ion rod to have consistent electricity eliminating performance under the same vertical distance as in claim 1, wherein the whole structure of the electrode sleeve is a cylindrical structure, and the head end of the electrode sleeve is inserted into the electrode seat.
7. The method for enabling the horizontal gas outlet directions of the two sides of the ion rod to have consistent electricity eliminating performance under the same vertical distance according to claim 1 or 6, wherein four electrode sleeve extending arms which are arranged at equal angles in a separated manner are arranged at the head end part of the electrode sleeve inserted into the electrode seat;
an adjacent gap is arranged between two adjacent electrode sleeve extending arms;
the middle part of the electrode sleeve is protruded to be in a cylinder table shape, and four electrode sleeve air inlet gaps which are separated from each other at equal angles are arranged at the bottom of the protruded cylinder table;
The air inlet gaps of the four electrode sleeves are correspondingly communicated with adjacent gaps among the extending arms of the four electrode sleeves respectively;
Compressed air flows into the air passage in the electrode seat through the air inlet gap and the adjacent gap.
8. The method for enabling the electrical properties of the horizontal gas outlet directions of the two sides of the ion rod to be consistent under the same vertical distance as claimed in claim 1, wherein the electrode base comprises a gas channel arranged along a longitudinal central axis;
four peripheral convex ribs of the electrode seat are arranged at equal angles in a separation way at the horn-shaped opening and around the opening at the front part of the electrode seat;
an external thread mounting column is arranged at the rear part of the electrode seat;
The end face of the gas outlet of the electrode seat, the top face of the external thread mounting column and the end face of the lower part of the electrode sleeve protruding cylinder platform are parallel to each other;
the discharge electrode is positioned at the center of the air passage.
9. The method for making the electrical properties of the two sides of the ion bar uniform in the horizontal outlet direction under the same vertical distance according to claim 1, the air flue is characterized in that the cross section of the air flue along the transverse axis is circular.
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| CN116367398A (en) * | 2021-12-28 | 2023-06-30 | 上海安平静电科技有限公司 | A discharge structure and test method for static eliminator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011003283A (en) * | 2009-06-16 | 2011-01-06 | Toto Ltd | Static eliminator |
| CN103716975A (en) * | 2013-12-31 | 2014-04-09 | 上海安平静电科技有限公司 | Electrode assembly for static electricity eliminator |
| CN208863095U (en) * | 2018-08-03 | 2019-05-14 | 上海颀普静电科技有限公司 | A kind of Xelminator of annular ground connection |
| CN211831302U (en) * | 2019-12-31 | 2020-10-30 | 上海安平静电科技有限公司 | Discharge electrode assembly for ion bar |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4246819B2 (en) * | 1998-08-18 | 2009-04-02 | 浜松ホトニクス株式会社 | Static electricity removing method and apparatus |
| TWI362682B (en) * | 2003-12-02 | 2012-04-21 | Keyence Co Ltd | Ionizer and discharge electrode assembly mounted therein |
| JP5319203B2 (en) * | 2008-08-19 | 2013-10-16 | 株式会社キーエンス | Static eliminator |
| CN105149308B (en) * | 2015-10-23 | 2017-07-25 | 北京七星华创电子股份有限公司 | It is a kind of that there is the cleaning device and cleaning method for removing electrostatic interaction |
| CN106693876B (en) * | 2017-02-28 | 2019-11-12 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of supersonic nozzle |
| JP6990848B2 (en) * | 2017-11-10 | 2022-01-12 | 福岡県 | Injection nozzle and injection method |
-
2019
- 2019-12-31 CN CN201911416419.4A patent/CN110996485B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011003283A (en) * | 2009-06-16 | 2011-01-06 | Toto Ltd | Static eliminator |
| CN103716975A (en) * | 2013-12-31 | 2014-04-09 | 上海安平静电科技有限公司 | Electrode assembly for static electricity eliminator |
| CN208863095U (en) * | 2018-08-03 | 2019-05-14 | 上海颀普静电科技有限公司 | A kind of Xelminator of annular ground connection |
| CN211831302U (en) * | 2019-12-31 | 2020-10-30 | 上海安平静电科技有限公司 | Discharge electrode assembly for ion bar |
Non-Patent Citations (1)
| Title |
|---|
| 三菱形静电消除器的优化设计;董炎 等;船海工程;20210228;68-71 * |
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