WO2011000196A1 - 掺杂气发生装置 - Google Patents

掺杂气发生装置 Download PDF

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Publication number
WO2011000196A1
WO2011000196A1 PCT/CN2009/076239 CN2009076239W WO2011000196A1 WO 2011000196 A1 WO2011000196 A1 WO 2011000196A1 CN 2009076239 W CN2009076239 W CN 2009076239W WO 2011000196 A1 WO2011000196 A1 WO 2011000196A1
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WIPO (PCT)
Prior art keywords
doping
dopant
gas generating
gas
generating device
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PCT/CN2009/076239
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English (en)
French (fr)
Inventor
张仲夏
李徽
张阳天
林津
刘建华
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同方威视技术股份有限公司
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Application filed by 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Priority to US12/743,926 priority Critical patent/US8640727B2/en
Priority to CA2701922A priority patent/CA2701922C/en
Priority to EP20090846724 priority patent/EP2450938B1/en
Publication of WO2011000196A1 publication Critical patent/WO2011000196A1/zh

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/622—Ion mobility spectrometry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/3112—Main line flow displaces additive from shunt reservoir
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4891—With holder for solid, flaky or pulverized material to be dissolved or entrained
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6606—With electric heating element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87338—Flow passage with bypass
    • Y10T137/87346—Including mixing feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet

Definitions

  • the present invention relates to a doping gas generating device which can use either a solid doping agent or a liquid dopant. More specifically, the present invention relates to a concentration-adjustable, tunable doping gas generating device for an ion mobility spectrometer, thereby improving the detection performance of an ion mobility spectrometer IMS instrument.
  • BACKGROUND OF THE INVENTION Ion mobility spectrometry IMS is a fast, sensitive, and portable field detection technology. The technology has been applied to military and security agencies to detect chemical agents, explosives and drugs.
  • a dopant substance whether it is a liquid such as methylene chloride or a solid such as hexachloroethane, a certain amount of gaseous molecules are balanced at normal temperature and pressure, and this gaseous molecule can be improved.
  • the ion mobility spectrometer detects the doping gas of the performance.
  • different dopant materials especially different forms of dopant materials, have different concentrations of gaseous molecules in the air under the same conditions.
  • the vapor pressure of a liquid substance is much greater than the volatilized gas pressure of a solid substance.
  • the container containing the dopant When using liquid dopants, it is required that the container containing the dopant should have good sealing performance, not only to ensure that the miscellaneous agent does not overflow during the use and transportation of the instrument, but also to ensure smooth generation and exudation of a very small amount of doping. gas. When a solid dopant is used, it may also be necessary to heat the dopant to increase the amount of dopant gas produced.
  • Another object of the present invention is to provide a doping gas generating device capable of controlling the on-off and doping amount of a doping gas.
  • a doping gas generating apparatus for providing a miscellaneous gas to an ion mobility spectrometer, comprising: a miscellaneous tank; an intake pipe, an inlet end of the intake pipe and an upstream of a carrier gas path a side connection, the outlet end of which is connected to the doping tank; an outlet pipe, the inlet end of the outlet pipe is connected to the doping tank, and the outlet end thereof is connected to the downstream side of the carrier gas path; the doping gas generating unit is used for The doping gas is released, wherein a doping gas generating unit is placed in the doping tank.
  • the doping gas generating unit includes: a bottle body; and a dopant, the dopant being placed in the bottle body.
  • the dopant is a solid dopant; and the bottle includes a detachable upper open cap, the cap being provided with an aperture to allow the solid dopant The volatile gas escapes.
  • the dopant is a liquid dopant; the upper opening of the bottle body is provided with a permeable membrane, which can prevent liquid dopant from leaking and allow the doping gas to penetrate The membrane oozes out.
  • the inlet end of the intake pipe is provided with a two-position three-way solenoid valve; and the outlet end of the air outlet pipe is provided with a two-position two-way solenoid valve.
  • the outlet end of the intake pipe and the inlet end of the outlet pipe extend substantially in a diagonal direction of the bottle body.
  • the outlet end of the intake pipe extends to the bottom of the bottle body; and an inlet end of the outlet pipe extends from an upper portion of the bottle body to be connected to a downstream side of the carrier gas path.
  • a lower end of the doping tank is provided with a bottom cover detachably connected to the doping tank,
  • the bottom cover is provided with a bracket for fixing the bottle body.
  • the miscellaneous gas generating device further comprises a heating temperature control device, the heating temperature control device comprising: 111 a heating film around the outer peripheral wall of the doping tank; a temperature sensor detecting the temperature of the doping tank; a temperature controller for controlling the temperature of the doping tank by a temperature detected by the controller; and an insulating heat insulating layer covering the outside of the heating film to seal the doping tank.
  • the heating temperature control device comprising: 111 a heating film around the outer peripheral wall of the doping tank; a temperature sensor detecting the temperature of the doping tank; a temperature controller for controlling the temperature of the doping tank by a temperature detected by the controller; and an insulating heat insulating layer covering the outside of the heating film to seal the doping tank.
  • the body and cap are made of a hard, corrosion resistant material.
  • At least one aspect of the invention has the following beneficial effects:
  • the doping gas of the present invention can be used not only as a solid dopant but also as a liquid. Dopant.
  • the doped can bottom cover is equipped with a bracket for fixing the dopant bottle, and the bottom cover is connected with the doping tank through the thread, which can facilitate the replacement or supplement of the dopant.
  • the doping gas amount can be adjusted by controlling the temperature of the doping tank to adjust the doping amount of the doping gas, so that the performance of the ion mobility spectrometer is greatly improved.
  • FIG. 1 is a schematic structural view of a doping gas generating apparatus according to a specific embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar parts. The following description of the embodiments of the present invention is intended to explain the present general inventive concept, and should not be construed as A limitation of the invention.
  • FIG. 1 is a schematic structural view of a doping gas generating device in accordance with an embodiment of the present invention.
  • a doping gas generating apparatus for providing doping gas for an ion mobility spectrometer, comprising: a doping tank 3; an intake pipe 1, an inlet end 201 of the intake pipe 1, and a carrier gas
  • the upstream side of the road 20 is connected, the outlet end 202 is connected to the doping tank 3, the outlet pipe 2, the inlet end 203 of the outlet pipe 2 is connected to the doping tank 3, and the outlet end 204 is downstream of the carrier gas path 20.
  • the carrier gas path 20 is an air flow path of an ion mobility detector (IMS) to which a substance to be detected is input, and for example, the carrier gas may be it gas or purified air.
  • IMS ion mobility detector
  • the carrier gas passage 20 is conveyed from the left side in Fig. 1, that is, the upstream side, on the right side in Fig. 1, that is, on the downstream side.
  • the doping gas generating unit includes: a bottle body 5; and a dopant 30, and the dopant 30 is placed on the bottle body 5'11.
  • the dopant can be a solid dopant or a liquid dopant.
  • the bottle body 5 includes a bottle cap 6 detachably coupled to an upper end thereof to seal an upper opening of the bottle body 5.
  • the cap 6 is provided with a small hole 12, To allow the volatile gas of the solid dopant to escape.
  • a permeable membrane 7 may be disposed on the upper vent of the bottle body 5 to prevent liquid dopant leakage and to bleed through the permeable membrane 7 .
  • the amount of dopant gas added can be varied by adjusting the pore size, membrane area or film thickness on the dopant cap 6.
  • the inlet end 201 of the intake pipe 1 is provided with a two-position three-way solenoid valve 21; meanwhile, the outlet end 204 of the air outlet pipe 2 is provided with a two-position two-way solenoid valve 22.
  • the outlet end 204 of the air outlet pipe 2 is provided with a two-position two-way solenoid valve 22, and by adjusting the opening degree of the two-position two-way solenoid valve 22, the airflow branch flowing through the doping tank 3 can be controlled to be introduced.
  • the outlet end 202 of the intake pipe 1 and the inlet end 203 of the outlet pipe 2 extend substantially in the diagonal direction of the bottle body 5. As shown in FIG. 1, the outlet end 202 of the intake pipe 1 extends to the bottom of the bottle body 5; and the inlet end 203 of the outlet pipe 2 is extended from the upper portion of the bottle body 5 to The downstream side of the carrier gas path 20 is connected.
  • the position of the inlet and outlet ports should be as far as possible in the doping tank so that the gas flow can be sufficiently swept through the inside of the doping tank, thereby increasing the doping efficiency.
  • the lower end of the doping tank 3 is provided with a detachable connection to the doping A bottom cover 4 on the miscellaneous can 3, and the bottom cover 4 is provided with a bracket 8 for fixing the bottle body 5.
  • a bracket 8 such as a shrapnel as shown in Fig. 1, it is possible to secure the bottle body 5 to the bottom cover 6, thereby preventing the occurrence of spillage of dopants, particularly liquid dopants, during transportation and use.
  • the doping gas generating device further includes a heating temperature control device, comprising: a heating film 9 surrounding the outer peripheral wall of the doping tank ; a temperature sensor 10 detecting the temperature of the miscellaneous can ; detecting based on a temperature controller a temperature controller 12 for controlling the temperature of the doping tank; and a heat insulating layer 11 covering the outside of the heating film to seal the doping tank.
  • the heating film 9 can be a resistance wire or a printed thick film heating element.
  • the temperature sensor 10 can be a thermocouple or a thermistor sensor or the like.
  • the temperature controller 12 can be either a mechanical temperature controller or an electronic temperature controller such as a resistive temperature controller or a thermocouple temperature controller.
  • the heat insulating layer 11 may be, for example, a glass wool product, a urethane foam or a phenol foam.
  • the bottle body 5 and the cap 6 are made of a hard corrosion-resistant material such as glass or stainless steel.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Sampling And Sample Adjustment (AREA)

Description

掺杂气发生装置
技术领域 本发明涉及一种掺杂气发生装置， 其既可以使用固态惨杂剂， 也可以使用液 态掺杂剂。 更具体地说， 本发明涉及一种为离子迁移谱仪提供浓度稳定的、 可调 的掺杂气发生装置， 从而可提高离子迁移谱仪 IMS仪器的检测性能。 背景技术 离子迀移谱技术 IMS是一种快速、 灵敏、 便携的现场检测技术。 该技术已丌 始应用于军事与安检机构， 可以检测化学毒剂、 爆炸物品和毒品等。 离子迁移谱 仪在检测违禁物品时， 为了消除干扰， 提高仪器的检测灵敏度， 常常需要向迁移 管的离化室引入少量多氯代烃， 在离子源的作用下多氯代烃优先离子化。 这样， 它一方面与千扰物质竞争， 降低了干扰物质的离子浓度， 即减少了干扰； 另一方 面， 它又能将其离子电荷转移给被检测物分子， 使被检测物质的离子浓度大幅增 力口， 从而增加了被检测物的响应信号， 即提高了仪器的检测灵敏度。
作为掺杂剂物质， 无论是液态的如二氯甲垸等， 还是固态的如六氯乙垸等， 常温常压下都有一定量的气态分子与之保持平衡， 这种气态分子就是能起提高离 子迁移谱仪检测性能的掺杂气。 显然， 不同的掺杂剂物质， 尤其是不同形态的掺 杂剂物质， 在相同的条件下， 其空气中的气态分子的浓度不同。 一般来说液态物 质的蒸气压力比固态物质的挥发的气体压力要大许多。 检测项目不同时， 所用的 掺杂剂及形态就有所不同， 掺杂气产生的条件也就不同。 使用液态掺杂剂时， 要 求盛装掺杂剂的容器密封性要好， 不仅保证仪器在使用与转运过程中惨杂剂不会 溢洒， 而且还要保证能平稳产生并渗出极少量的掺杂气。 使用固态掺杂剂时， 还 有可能需耍加热掺杂剂以增加掺杂气产生量。
目前， 还没有同时兼顾这几种性能的掺杂气发生装置。 因此， 需要提供一种 掺杂气发生装置， 它不仅适用固态掺杂剂， 而且还适用液态掺杂剂， 并且能对掺 杂气发生量进行调节。 发明内容 鉴于此， 本发明的目的在于克服现有技术中存在的问题和缺陷的至少一个方 面。
相应地， 本发明的目的之一在于提供一种掺杂气发生装置， 其能够同时适用 于固态掺杂剂和气态掺杂剂。
本发明的另一目的在于提供一种掺杂气发生装置， 其能够对掺杂气的通断和 掺杂量进行控制。
本发明的再一目的在于提供一种掺杂气发生装置， 其能够方便地实现掺杂剂 的更换或补充。
根据本发明的一个方面， 其提供一种为离子迁移谱仪提供惨杂气的掺杂气发 生装置， 包括： 惨杂罐； 进气管， 所述进气管的进口端与载气气路的上游侧连接， 其出口端与掺杂罐连接； 出气管， 所述出气管的进口端与掺杂罐连接， 其出口端 与载气气路的下游侧连接； 掺杂气发生单元， 其用于释放掺杂气体， 其中掺杂气 发生单元置于所述掺杂罐中。
具体地， 所述掺杂气发生单元包括： 瓶体； 以及惨杂剂， 所述掺杂剂放置在 所述瓶体中。
在一种实施方式中， 所述掺杂剂为固态掺杂剂； 以及所述瓶体包括可拆卸的 上开口瓶盖， 所述瓶盖上设置有小孔， 以允许所述固态掺杂剂的挥发气体逸出。
在另一种实施方式中， 所述掺杂剂为液态掺杂剂； 所述瓶体的上开口上设置 有渗透膜， 既能防止液态掺杂剂洒漏， 又能让掺杂气通过渗透膜渗出。
优选地， 所述进气管的所述进口端设置有两位三通电磁阀； 以及所述出气管 的出口端设置有两位两通电磁阀。
优选地， 所述进气管的所述出口端与所述出气管的进口端大致沿所述瓶体的 对角线方向延伸。
具体地， 所述进气管的所述出口端延伸到所述瓶体的底部； 以及所述出气管 的进口端从所述瓶体的上部延伸出以与载气气路的下游侧连接。
进一步地， 所述掺杂罐的下端设置有可拆卸地连接到掺杂罐上的底盖， 所述 底盖上设置有固定所述瓶体的支架。
优选地， 惨杂气发生装置还包括加热控温装置， 所述加热控温装置包括： 111 绕所述掺杂罐外周壁的加热膜； 检测所述掺杂罐的温度的温度传感器； 基于温度 控制器检测的温度来控制所述摻杂罐的温度的温度控制器； 以及覆盖在所述加热 膜的外部以密封所述掺杂罐的绝热保温层。
优选地， 所述瓶体和瓶盖由硬质耐腐蚀材料制成。 本发明的至少一个方面具有下述有益效果：
1. 通过设置掺杂罐， 并将用于释放掺杂气体的掺杂气发生单元置于所述掺杂 罐中， 从而本发明的掺杂气不仅可用固态掺杂剂， 也可以用于液态掺杂剂。
2. 掺杂罐的进出气管上都有电磁阀， 可以控制掺杂气的加入与否。 进出气口 在掺杂罐的位置应尽量的远， 以使气流能充分流扫过惨杂罐内部。
3. 掺杂罐底盖上安装有可固定掺杂剂瓶的支架，底盖通过螺纹与掺杂罐连接， 可方便掺杂剂的更换或补充。
4. 通过设置加热控温装置， 从而能够通过控制掺杂罐的温度以对掺杂气量进 行调节， 以调节摻杂气的加入量， 使离子迁移谱仪的使用性能有大幅度提高。
5. 掺杂剂瓶的瓶体瓶盖为硬质耐腐材料， 瓶盖可通过螺纹拧紧， 瓶盖中央有 孔， 可安装渗透膜， 膜既能防止液态掺杂剂洒漏， 又能让微量的掺杂气通过膜渗 出。 附图说明 附图 1是根据本发叨的具体实施方式中的掺杂气发生装置的结构示意图。 具体实施方式 下面通过实施例， 并结合附图， 对本发明的技术方案作进一步具体的说明。 在说明书中， 相同或相似的附图标号指示相同或相似的部件。 下述参照附图对本 发明实施方式的说叨旨在对本发明的总体发明构思进行解释， 而不应当理解为对 本发明的一种限制。
附图 1 是根据本发明的具体实施方式中的掺杂气发生装置的结构示意图。 参 加图 1， 其示出了一种为离子迁移谱仪提供掺杂气的掺杂气发生装置， 包括： 掺 杂罐 3 ; 进气管 1， 所述进气管 1的进口端 201与载气气路 20的上游侧连接， 其 出口端 202与掺杂罐 3连接； 出气管 2， 所述出气管 2的进口端 203 与掺杂罐 3 连接， 其出口端 204与载气气路 20的下游侧连接； 掺杂气发生单元， 其包括惨杂 剂 30并用于释放掺杂气体， 其中惨杂气发生单元置于所述掺杂罐 3中。载气气路 20 为将被检测的物质输入到的离子迁移检测仪 （IMS ) 的气流通路， 例如载气可 以是 it气或净化过的空气。 载气气路 20从图 1中的左侧， 即上游侧向， 图 1中的 右侧， 即下游侧输送。
如图 1所示， 具体地， 所述掺杂气发生单元包括： 瓶体 5 ; 以及掺杂剂 30， 所述掺杂剂 30放置在所述瓶体 5 '11。所述掺杂剂可以为固态掺杂剂或液态掺杂剂。 所述瓶体 5包括可拆卸地连接到其上端以密封所述瓶体 5的上开口的瓶盖 6， 当 所述掺杂剂为固态时， 所述瓶盖 6上设置有小孔 12， 以允许所述固态掺杂剂的挥 发气体逸出。 当所述掺杂剂为液态掺杂剂， 所述瓶体 5的上幵口上可以设置有渗 透膜 7， 以既能防止液态掺杂剂洒漏， 又能掺杂气通过渗透膜 7渗出。 通过调节 掺杂剂瓶盖 6上的孔径、 膜面积或膜厚度可以改变掺杂气的加入量。
参见图 1， 所述进气管 1的所述进口端 201设置有两位三通电磁阀 21 ; 同时， 所述出气管 2的出口端 204设置有两位两通电磁阀 22。 通过上述设置， 当两位三 通电磁阀 21通电时，其可以关断或接通流入到掺杂罐 3中的气流支路。另一方面， 所述出气管 2的出口端 204设置有两位两通电磁阀 22， 通过调节两位两通电磁阀 22的开度， 可以控制流经掺杂罐 3的气流支路汇入到载气气路 20的下游侧以及 掺杂气流量的大小。
进气管 1的所述出口端 202 与所述出气管 2的进口端 203大致沿所述瓶体 5 的对角线方向延伸。 如图 i所示， 所述进气管 1的所述出口端 202延伸到所述瓶 体 5的底部； 以及所述出气管 2的进口端 203从所述瓶体 5的上部延仲出以与载 气气路 20的下游侧连接。 通过使进、 出气口设置在掺杂罐的位置应尽量地远， 以 使气流能充分流扫过掺杂罐内部， 从而提高了掺杂效率。
在一种实施例中， 参见图 1， 所述掺杂罐 3 的下端设置有可拆卸地连接到掺 杂罐 3上的底盖 4， 所述底盖 4上设 H有固定所述瓶体 5的支架 8。 通过设置支架 8， 例如如图 1所述的弹片， 其可以将瓶体 5固定在底盖 6上， 从而防止掺杂剂， 特别是液态掺杂剂在运输和使用过程中出现溢洒。
参见图 1， 掺杂气发生装置还包括加热控温装置， 其包括： 围绕所述掺杂罐 外周壁的加热膜 9 ; 检测所述惨杂罐的温度的温度传感器 10 ; 基于温度控制器检 测的温度来控制所述掺杂罐的温度的温度控制器 12 ; 以及覆盖在所述加热膜的外 部以密封所述掺杂罐的绝热保温层 11。 加热膜 9可以是电阻丝或印刷厚膜加热元 件。 温度传感器 10可以为热电偶或热敏电阻传感器等。 温度控制器 12既可以采 用机械式温度控制器， 也可以采用电子式温度控制器， 例如电阻式温度控制器或 热电偶式温度控制器等。 绝热保温层 11可以采用例如玻璃棉制品、 聚氨酯泡沫塑 料或酚醛泡沫塑料等。 通过设置加热控温装置， 当改变掺杂气罐的温度时， 也可 以改变掺杂气的加入量。
由于大多数掺杂气， 例如多氯代烃具有一定的腐蚀性， 所述瓶体 5 和瓶盖 6 由硬质耐腐蚀材料制成， 例如玻璃或不锈钢材料等。
虽然本总体发明构思的一些实施例巳被显示和说明，本领域普通技术人员将理解， 在不 Π离本总体发明构思的原则和精神的情况下， 可对这些实施例做出改变， 本发明 的范围以权利要求和它们的等同物限定。

Claims

权 利 要 求
1 . 一种为离子迁移谱仪提供掺杂气的掺杂气发生装置， 包括：
掺杂罐；
进气管， 所述进气管的进口端与载气气路的上游侧连接， 其出口端与掺杂罐 连接；
出气管， 所述出气管的进口端与掺杂罐连接， 其出口端与载气气路的下游侧 连接；
掺杂气发生单元， 其用于释放掺杂剂气体， 其中掺杂气发生单元置于所述掺 杂罐中。
2. 根据权利要求 1所述的掺杂气发生装置，其特征在于所述掺杂气发生单元 包括：
瓶体； 以及
掺杂剂， 所述糁杂剂放置在所述瓶体中。
3. 根据权利要求 2所述的掺杂气发生装置， 其特征在于：
所述掺杂剂为固态掺杂剂； 以及
所述瓶体包括可拆卸的上幵口瓶盖， 所述瓶盖上设置有小孔， 以允许所述固 态掺杂剂的挥发气体逸出。
4. 根据权利要求 2所述的掺杂气发生装置， 其特征在于：
所述掺杂剂为液态惨杂剂；
所述瓶体的上幵口上设置有渗透膜， 既能防止液态掺杂剂洒漏， 又能使掺杂 气通过渗透膜渗出。
5. 根据权利耍求 1或 2所述的掺杂气发生装置， 其特征在于：
所述进气管的所述进口端设置有两位三通电磁阀； 以及
所述出气管的出口端设置有两位两通电磁阀。
6. 根据权利要求 5所述的惨杂气发生装置， 其特征在于：
所述进气管的所述出口端与所述出气管的进口端大致沿所述瓶体的对角线方 向延仲。
7. 根据权利要求 6所述的掺杂气发生装置， 其特征在于- 所述进气管的所述出口端延伸到所述瓶体的底部； 以及
所述出气管的进口端从所述瓶体的上部延伸出以与载气气路的下游侧连接。
8. 根据权利要求 2 4中任何一项所述的掺杂气发生装置， 其特征在于： 所述掺杂罐的下端设置有可拆卸地连接到掺杂罐上的底盖， 所述底盖上设置 有固定所述瓶体的支架。
9. 根据权利要求 1 4中任何一项所述的掺杂气发生装置，还包括加热控温装 置， 所述加热控温装置包括：
围绕所述掺杂罐外周壁的加热膜；
检测所述掺杂罐的温度的温度传感器；
基于温度控制器检测的温度来控制所述掺杂罐的温度的温度控制器； 以及 覆盖在所述加热膜的外部以密封所述掺杂罐的绝热保温层。
10. 根据权利要求 3所述的惨杂气发生装置， 其特征在于：
所述瓶体和瓶盖由硬质耐腐蚀材料制成。
PCT/CN2009/076239 2009-06-30 2009-12-30 掺杂气发生装置 WO2011000196A1 (zh)

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