CN202373552U - Electrode structure of ion transference tube and ion transference tube comprising electrode structure - Google Patents

Electrode structure of ion transference tube and ion transference tube comprising electrode structure Download PDF

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Publication number
CN202373552U
CN202373552U CN 201120527980 CN201120527980U CN202373552U CN 202373552 U CN202373552 U CN 202373552U CN 201120527980 CN201120527980 CN 201120527980 CN 201120527980 U CN201120527980 U CN 201120527980U CN 202373552 U CN202373552 U CN 202373552U
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transference
electrode
structure
ion
tube
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CN 201120527980
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Chinese (zh)
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包云肽
李冠兴
贺文
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同方威视技术股份有限公司
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Abstract

The utility model discloses an electrode structure of an ion transference tube and the ion transference tube comprising the electrode structure. The electrode structure comprises an annular electrode, wherein the inner edge of the annular electrode bends towards one side so that the cross-section part of the center part of the annular electrode is of a dovetail shape. By using an ion transference detecting instrument disclosed by the utility model, ions in transference state can travel along a focused electric power line; and since the high-tension cell between electrodes is increased in uniform acceleration, the ions are in uniform-acceleration transference state due to a generated electric field, and the resolution ratio and the sensitivity of a transference spectrum of the ions simultaneously reach to the best.

Description

离子迁移管的电极结构及包括该结构的离子迁移管 Ion transfer tube and the electrode structure comprises an ion drift tube of the structure

技术领域 FIELD

[0001] 本实用新型涉及离子迁移技术领域,尤其涉及一种离子迁移管的电极结构及包括该结构的离子迁移管。 [0001] Technical Field The present invention relates to an ion mobility, in particular, it relates to an ion drift tube and the electrode structure comprises the structure of the ion transport tube.

背景技术 Background technique

[0002] 在安检领域中,针对毒品、爆炸物、化学战剂、工业毒剂等危险物品的检测是极为重要的工作,因此出现了多种针对以上物品的探测仪器,而使用离子迁移技术的探测仪器是目前最通用的。 [0002] In the security field, for the detection of drugs, explosives, chemical warfare agents, toxic industrial and other hazardous materials is extremely important work, resulting in a variety of detection equipment for the above items, the use of ion mobility detection technology instrument is the most common. 离子迁移技术最核心的两个指标就是探测器的灵敏度和分辨率。 Ion mobility technology is the core of the two indicators of sensitivity and resolution of the detector. 而这两个指标的优化是离子迁移管的设计制作的主要目标。 The optimization of these two indicators is the main goal of the design of the ion transfer tube. 迁移管是离子迁移谱仪的核心部分,它用来产生均匀的电场,以使不同迁移率的离子进行分离。 It is the core of the drift tube of an ion mobility spectrometer, which is used to generate a uniform electric field, so that ions of different mobilities separated. 如图I所示,传统的迁移管是利用以绝缘部分3等间距间隔的相同大小的薄片电极1,辅以均匀的高压电场,控制离子在管体的迁移。 FIG I, the conventional transfer tube using the electrode sheet of the same size in the insulating portion 3 equidistantly spaced 1, supplemented with a uniform high voltage field, control the migration of ions in the tubular body. 由于在迁移管中,离子是在常压的空气中漂移,图I所示的传统结构的均匀电场是一个近似的模型,非理想均匀电场;且对于离子来说,它要同时受制于高压电场、空气阻力等因素;均匀等距的高压,不能很好的让离子预加速、聚焦、最大量迁移等。 Since the drift tube, the ions drift in the air pressure, the uniform electric field conventional structure shown in Figure I is an approximate model, the non-uniform electric field over; and for ion, it is subject to high electric field at the same time air resistance and other factors; equidistant uniform pressure, so that ions are not well pre-accelerated, focused, the maximum amount of migration. 这样,所获得的迁移谱的灵敏度和分辨率很难达到最佳。 Thus, the sensitivity and resolution mobility spectrum obtained difficult at best.

实用新型内容 SUMMARY

[0003]( 一)要解决的技术问题 [0003] (a) To solve technical problems

[0004] 本实用新型要解决的技术问题是:如何提供一种离子迁移管,使得具有该离子迁移管的探测仪器的迁移谱的灵敏度和分辨率达到最佳。 [0004] The present invention Problem to be solved: how to provide an ion transport tube, such that the surveying instrument has a sensitivity and resolution of the ion mobility spectra of the drift tube to achieve the best.

[0005] ( 二)技术方案 [0005] (ii) Technical Solution

[0006] 为解决上述问题,本实用新型提供了一种离子迁移管的电极结构,该结构包括:环状电极,所述环状电极内缘向一侧弯曲,使得所述环状电极中心部分的截面呈燕尾形。 [0006] In order to solve the above problems, the present invention provides an electrode structure of an ion transport tube, the structure comprising: an annular electrode, an inner edge of the annular electrode is bent to one side, such that the central portion of the annular electrode the dovetail-shaped cross section.

[0007] 本实用新型还提供了一种离子迁移管,该迁移管包括间隔排列的上述电极结构以及所述电极结构之间的绝缘部分,所述电极结构的环状电极内缘向同一方向弯曲,所述同一方向为朝向离子迁移的反方向。 [0007] The present invention further provides an ion drift tube, the drift tube comprises an insulating portion between the electrode structures and the spaced electrode structures, the annular electrode of the electrode structure edge bent in the same direction the same direction is the reverse direction toward the ion migration.

[0008] 其中,所述电极结构呈朝向离子迁移的反方向递减的间隔排列。 [0008] wherein the electrode structures are arranged in spaced decreasing ion migration towards the opposite direction.

[0009] 其中,所述递减的间隔比例为:1.071^1 : ... : 1.07 : 1,其中,n为迁移管中所述电极结构的数量。 [0009] wherein the ratio of the decrement of the interval: 1.071 ^ 1: ...: 1.07: 1, wherein, for the n-number of the electrode structure of the drift tube.

[0010](三)有益效果 [0010] (c) beneficial effect

[0011] 使用本实用新型的电极结构及离子迁移管的离子迁移探测仪器,迁移状态的离子可沿着聚焦的电力线行进,且由于电极之间的高压间隔是匀加速增大的,这样产生的电场能使离子处于匀加速的迁移状态,其迁移谱的分辨率和灵敏度能够同时达到最佳。 [0011] Use of electrode structure according to the present invention ion transport and ion transport tube surveying instrument, state transition ions may travel along the power line focus, and the spacing between the electrodes due to high pressure is increased to accelerate uniformly, thus generated field ions can migrate in a constant acceleration state, the mobility spectra resolution and sensitivity can be optimized simultaneously.

附图说明 BRIEF DESCRIPTION

[0012] 图I为传统的离子迁移管结构示意图;[0013] 图2为依照本实用新型一种实施方式的离子迁移管的电极结构的结构示意图; [0012] Figure I is a schematic view of a conventional tubular structure migration ion; [0013] FIG. 2 is a schematic structural view of an electrode structure of the ion transfer tube in accordance with one embodiment of the present invention; and

[0014] 图3为依照本实用新型一种实施方式的离子迁移管的电极结构的中心部分的截面示意图; [0014] FIG. 3 is a schematic sectional view of the center portion of the electrode structure of the ion transfer tube in accordance with one embodiment of the present invention; and

[0015] 图4为使用本实用新型一种实施方式的离子迁移管的结构示意图。 [0015] FIG. 4 of the present invention is the use of ion schematic structural diagram of one embodiment of the transfer tube.

具体实施方式 detailed description

[0016] 本实用新型提出的离子迁移管的电极结构及包括该电极结构的离子迁移管,结合附图及实施例详细说明如下。 Detailed Description [0016] The present invention proposes an electrode structure of the ion transport tube and the electrode structure comprises an ion drift tube, in conjunction with the accompanying drawings and the following examples.

[0017] 如图2所示,依照本实用新型一种实施方式的离子迁移管的电极结构,包括:环状电极,所述环状电极(中心部分为空)内缘向一侧弯曲,使得环状电极中心部分的截面呈燕尾形,如图3所示。 [0017] 2, the migration of the electrode structure in accordance with the ion tube to an embodiment of the present invention, comprising: an annular electrode, an inner (central blank portion) of the annular electrode edge is bent to one side, so that an annular cross-sectional shape of the central portion of the electrode dovetail, as shown in FIG. 通过这种一面缩口一面广口的设计,让加在其上的电场具有聚焦作用,迫使处于迁移状态的离子沿着聚焦的电力线行进。 In this side necking side wide-mouth design, so that it is applied to the electric field has a focusing effect, forcing the migration of ions in a state to travel along power lines focused.

[0018] 如图4所示,依照本实用新型一种实施方式的离子迁移管,包括间隔排列的上述图2所示的电极结构2以及各电极结构2之间的绝缘部分3,各电极结构的环状电极内缘向同一方向弯曲,即朝向离子迁移的反方向弯曲,通常为朝向离子迁移探测仪器中的法拉第盘。 [0018] As shown in FIG. 4, in accordance with one embodiment of the present invention the ion drift tube embodiment, the electrode structure shown in FIG. 2 spaced insulation between the respective electrode structures 22 and comprises a portion 3, each of the electrode structures the inner edge of the annular electrode is bent in the same direction, i.e., toward the ion transport in the reverse direction is bent, generally toward the surveying instrument ion mobility Faraday plate. 电极结构也呈朝向法拉第盘方向递减的间隔排列。 An electrode structure arranged in spaced Faraday decreasing toward the disk direction. 其中,递减的间隔比例从传统的I : I : ... : I变为:1.071"1 : ... : 1.07 : 1,其中,n为迁移管中电极结构的数量。这种电极之间的高压间距,让离子迁移管腔内的离子可以以匀加速的状态迁移,配合上述具有聚焦功能的电极结构,使得离子在最后达到法拉第盘时,迁移谱的灵敏度和分辨率达到最佳。 Wherein the ratio of decreasing distance from the traditional I: I: ...: I becomes: 1.071 "1: ...: 1.07: 1, wherein the n-electrode is the number of the drift tube structure between such electrodes. the pitch of the high pressure, so that ions within the ion mobility may migrate lumen uniform acceleration state, with the above-described electrode structure having a focusing function, such that when the ions finally reach the Faraday plate, mobility spectra optimal sensitivity and resolution.

[0019] 以上实施方式仅用于说明本实用新型,而并非对本实用新型的限制,有关技术领域的普通技术人员,在不脱离本实用新型的精神和范围的情况下,还可以做出各种变化和变型,因此所有等同的技术方案也属于本实用新型的范畴,本实用新型的专利保护范围应由权利要求限定。 [0019] The above embodiments are merely illustrative of the present invention, rather than limiting the present invention, relating to ordinary skill in the art, without departing from the spirit and scope of the invention also may be made modifications and variations, all equivalent technical solutions also belong to the scope of the present invention, the present invention defines the scope of protection defined by the appended claims.

Claims (4)

  1. 1. 一种离子迁移管的电极结构,其特征在于,该结构包括:环状电极,所述环状电极内缘向一侧弯曲,使得所述环状电极中心部分的截面呈燕尾形。 An electrode structure of the ion transport tube, wherein the structure comprises: an annular electrode, said inner edges of the annular electrode is bent to one side, so that the annular cross-sectional shape of the central portion of the electrode dovetail.
  2. 2. 一种离子迁移管,其特征在于,该迁移管包括间隔排列的权利要求I所述的电极结构以及所述电极结构之间的绝缘部分,所述电极结构的环状电极内缘向同一方向弯曲,所述同一方向为朝向离子迁移的反方向。 An ion transport tube, wherein the tube comprises spaced claimed in claim migration insulating portion between the electrodes and the structure I according to the electrode structure, the electrode structure of the inner annular edge of the electrode to the same bending direction, toward the same direction as the reverse direction of ion migration.
  3. 3.如权利要求2所述的离子迁移管,其特征在于,所述电极结构呈朝向离子迁移的反方向递减的间隔排列。 3. The ion drift tube as claimed in claim, wherein said electrode structures are arranged in spaced decreasing ion migration towards the opposite direction.
  4. 4.如权利要求3所述的离子迁移管,其特征在于,所述递减的间隔比例为:I. Oin-1 : ... : 1.07 : 1,其中,η为迁移管中所述电极结构的数量。 An electrode structure, wherein, [eta] is the drift tube: as claimed in claim 3, the ion drift tube, wherein the ratio of the decrement interval are:. I Oin-1: ...: 1.07 quantity.
CN 201120527980 2011-12-16 2011-12-16 Electrode structure of ion transference tube and ion transference tube comprising electrode structure CN202373552U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103165394A (en) * 2011-12-16 2013-06-19 同方威视技术股份有限公司 Electrode structure of ion migration tube and ion migration tube comprising the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103165394A (en) * 2011-12-16 2013-06-19 同方威视技术股份有限公司 Electrode structure of ion migration tube and ion migration tube comprising the same
WO2013086992A1 (en) * 2011-12-16 2013-06-20 同方威视技术股份有限公司 Electrode structure for ion migration tube and ion migration tube having same
GB2512247A (en) * 2011-12-16 2014-09-24 Nuctech Co Ltd Electrode structure for ion migration tube and ion migration tube having same
US9147564B2 (en) 2011-12-16 2015-09-29 Nuctech Company Limited Electrode structure for ion drift tube and ion drift tube including the structure
CN103165394B (en) * 2011-12-16 2015-12-02 同方威视技术股份有限公司 Ion transfer tube and the electrode structure comprises an ion drift tube of the structure

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