WO2016033916A1 - 一种气体自动进样器 - Google Patents

一种气体自动进样器 Download PDF

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Publication number
WO2016033916A1
WO2016033916A1 PCT/CN2015/000259 CN2015000259W WO2016033916A1 WO 2016033916 A1 WO2016033916 A1 WO 2016033916A1 CN 2015000259 W CN2015000259 W CN 2015000259W WO 2016033916 A1 WO2016033916 A1 WO 2016033916A1
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WIPO (PCT)
Prior art keywords
sample
cylinder
cone
gas
syringe
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PCT/CN2015/000259
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English (en)
French (fr)
Inventor
刘伟
苏华
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中国科学院植物研究所
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Application filed by 中国科学院植物研究所 filed Critical 中国科学院植物研究所
Priority to US14/898,729 priority Critical patent/US10024770B2/en
Publication of WO2016033916A1 publication Critical patent/WO2016033916A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N2001/002—Devices for supplying or distributing samples to an analysing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G01N2001/242—Injectors or ejectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G01N2001/245—Fans

Definitions

  • the invention relates to a gas autosampler, belonging to a sampler in the field of ecological environment.
  • Gas samples are different from liquid or solid samples because they are more easily lost.
  • the measurement is mainly done by manual injection (except for online instruments).
  • injection is one of the main sources of quantitative analysis error, especially It is the analysis of artificial injection, the speed and pressure of different operators are different, even if the same operator before and after injection is difficult to maintain consistency.
  • the sample has to undergo the steps of collection, transportation and sampling, and the process is cumbersome, and most of them are manual operations. Many uncertainties are also introduced.
  • hard bottles are used as sample bottles for sample collection and injection, and vacuum is taken before sampling.
  • the sample gas is pressed into the bottle to generate a certain positive pressure.
  • the injection port of the instrument is injected under pressure, but the pressure inside the sample bottle is difficult to maintain. Different pressures will make the volume inside the loop. The difference is an important cause of poor sample repeatability, as well as incomplete cleaning of the container and poor air tightness, which may also affect the results.
  • the gas autosampler provided by the invention comprises a propeller, a transmission, a sample chain and a sample cone;
  • the pusher includes a stepping motor I, a lead screw, a slider and an optical axis, which are sequentially connected, and the slider is movable along the optical axis; an L-shaped pressing block is connected to the slider;
  • the transmission device includes a stepping motor II connected to the driving gear, and the driving gear is matched with a driven gear through a belt; the driven gear is connected to a transmission gear through a transmission shaft;
  • the sample chain includes at least one cylinder, and one end of the cylinder is fixed with a spring hoop; a cylinder is disposed in the tooth position of the transmission gear; the other end of the spring hoop fixes the syringe, and an outlet of the syringe extends through the cylinder and extends to the other end of the cylinder;
  • One end of the L-shaped compact can push the push rod of the syringe and press a one-way valve connected to the outlet of the syringe into the cone of the injection cone.
  • the long arm end of the L-shaped compact is connected to the slider.
  • the outlet of the syringe is connected with a two-way valve for controlling the opening and closing of the syringe, and the one-way valve is used to control the gas to flow out.
  • the sample chain includes a plurality of the cylinders and is arranged in a linear or cyclic chain to achieve continuous injection.
  • two adjacent cylinders are arranged in parallel, and the two ends are connected by a connecting piece to be horizontally connected, and are fixed by a circlip, that is, by alternately superposing the connecting pieces.
  • the connection between the cylinders is, by alternately superposing the connecting pieces.
  • the gas autosampler further includes a pressing piece, and the pressing piece comprises a stainless steel piece and a spring bolt;
  • the stainless steel piece has an arc shape and can be matched with the transmission gear
  • One end of the stainless steel piece is fixed on the casing of the gas autosampler, and the other end is connected to the spring bolt, and the spring bolt is fixed on the casing of the gas autosampler;
  • the tablet is used to effect the compression of the sample strand.
  • a through hole is further disposed in the tapered hole of the injection cone, and the through hole is connected to a directional valve, and the number of holes of the directional valve can be performed as needed Adjustment, the outlet of the directional valve can be connected to different inlets of the instrument and switched as needed.
  • the injection cone is provided with a contact switch, and the contact switch is pressed when the one-way valve of the outlet of the syringe is connected to the cone tip of the injection cone. Triggered.
  • the gas automatic sampler of the invention precisely controls the pushing distance by the stepping motor, and the speed and the distance are adjustable, thereby ensuring consistency before and after injection; the invention directly uses the syringe as a sample bottle, which can reduce the number of transfers and reduce pollution. Possibly, at the same time, the sample chain can be increased or decreased as needed.
  • the motor control can be injected multiple times, enabling automatic injection and unattended operation.
  • Figure 1 is a left side view of the gas autosampler of the present invention.
  • Figure 2 is a front elevational view of the gas autosampler of the present invention.
  • Figure 3 is a schematic exploded view of the sample chain in the gas autosampler of the present invention
  • FIG. 4 is a schematic view of a transmission device in the gas autosampler of the present invention, wherein FIG. 4(a) is a plan view and FIG. 4(b) is a front view.
  • Figure 5 is a schematic view showing the connection of the injection cone and the option valve in the gas autosampler of the present invention, wherein Figure 5(a) is a perspective view and Figure 5(b) is a plan view.
  • Figure 6 is an exploded perspective view of the tablet in the gas autosampler of the present invention.
  • the present invention provides a gas autosampler comprising a propeller 1, a transmission 2, a sample chain 3, a tablet 4, a sample cone 5, a directional valve 6, and a syringe. 7.
  • the sample chain 3 is hung on the transmission 2 and is pressed by the pressing piece 4.
  • the pusher 1 includes a stepping motor I11, a lead screw 14, a slider 12, and an optical axis 13 which are sequentially connected, and the slider 12 is movable along the optical axis 13.
  • An L-shaped clamp 15 is connected to the slider 12, wherein the long arm end of the L-shaped clamp 15 is connected to the slider 12, and the short arm end can push the push rod of the syringe 7 and push the outlet of the syringe 7 into the inlet.
  • the injection cone 5 is provided inside the cone tip of the sample cone 5, the injection cone 5 is provided.
  • the switch 16 is contacted, the outlet of the syringe 7 is connected to the two-way valve 10 and the check valve 8 in turn, and the check valve 8 is pressed into the cone of the injection cone 5, the contact switch 16 is triggered.
  • the sample chain 3 includes a plurality of cylinders 31, and two adjacent cylinders 31 are arranged in parallel, and the two ends are horizontally connected by the connecting piece 33, and are fixed by a circlip 32, thereby being a chain.
  • One end of the cylinder 31 is fixed with a spring hoop 34 which is wound around the spring to form a small diameter hoop for a fixed connection, the other end of which fixes the syringe 7, and the outlet of the syringe 7 passes through the cylinder 31. And extending to the other end of the cylinder 31.
  • the cylinder 31 can be hung in the tooth position of the transmission gear 21.
  • the transmission device 2 includes a stepping motor II22 and a driving gear 23 that are coupled to each other.
  • the driving gear 23 is coupled to the driven gear 25 via a belt 24, and the driven gear 25 is coupled to the transmission gear 21 via a transmission shaft 27.
  • the stepping motor II22 and the drive shaft 27 are fixed to the front surface of the base 26.
  • the transmission gear 21 and the transmission shaft 27 are axially coupled by a key connection; the top of the transmission shaft 27 is connected to the nut 28 by a thread.
  • the injection cone 5 is a circular central hole-cone-shaped structure, the cone-shaped outer sleeve and the O-ring serve as a sealing function, and the cone tip is used to receive the outlet of the check valve 8 connected to the injector 7;
  • the taper hole of the sample cone 5 is guided along the pipeline 17 to the side of the base through a through hole in the side wall, and can be connected to the inlet of the instrument or the selector valve 6 through the pipeline 17; the number of holes of the selector valve 6 can be as needed change. Connect the outlet of valve 6 to the different inlets of the instrument and switch as needed.
  • the pressing piece 4 includes a stainless steel piece 41 and a spring bolt 42.
  • the stainless steel piece 41 is arched in an arc shape matching with the transmission gear 21, and one end is rolled into a cylindrical shape, and is fixed to the rear back plate by screws. It can be rotated up and down, and the other end has a slit for matching the spring bolt 42 to press the sample chain 3.
  • the outlet of the injection cone 5 is connected to the instrument inlet, or firstly connected to the selector valve 6, and then the selector valve 6 is connected one by one to each inlet of the instrument.
  • Assembling the sample chain 3 firstly attaching a connecting piece 33 to each end of the two cylinders 31, and then continuing to attach the two connecting pieces 33 to connect one more cylinder 31, and repeating this operation until the number of sample digits reaches the demand , or the sample chain can be made into a ring for continuous use.
  • Press chain The sample chain 3 is hung in the corresponding tooth position of the transmission gear 21, the stainless steel piece 41 is pressed and locked by the spring bolt 42, and the spring bolt 42 is rotated to adjust the tension.
  • the software controls the stepping motor to complete the self-test.
  • the stepping motor I11 drives the lead screw 14 to rotate, and the L-shaped clamp 15 on the slider 12 is moved to the outermost side for resetting, and the stepping motor II22 connects the belt through the belt 24.
  • the driving gear 23 is torque-transferred to the driven gear 25, and drives the transmission gear 21 to rotate through the transmission shaft 27, correspondingly driving the sample chain 3 to realize sample injection and sample-removal operation, and the stepping motor II22 self-test needs to complete the rotation of the transmission gear 21 The circle is then turned back to the original position. The two motors complete the self-test after passing the self-test.
  • the software controls the stepping motor II22 to drive the transmission gear 21 according to the set parameters to displace the desired sample chain 3 hole to the injection cone 5. Then, the stepping motor I11 is driven to drive the L-shaped pressing block 15 on the slider 12 to move inward, and the pressing block 12 pushes the syringe 7 to move inward.
  • the outlet of the check valve 8 connected by the syringe 7 presses the cone of the injection cone 5
  • the contact switch 16 is triggered, and the contact switch transmits the signal back to the software to calculate the propulsion depth.
  • the pressure in the injector 7 reaches the opening pressure of the check valve 8, the gas is injected into the inlet, and the selector valve switches the outlet according to the setting, when the advancement depth reaches the requirement.
  • the software transmits the signal to the instrument to start the injection analysis, and continues to control the stepping motor I11 to complete the L-shaped clamp 15 to the outermost side for the reset operation, and the syringe 7 is spring-loaded by the spring clamp 34 Push away from the injection cone 5.
  • the software drives the stepper motor II22 to perform the injection operation of the next sample.
  • the gas automatic sampler of the invention precisely controls the pushing distance by the stepping motor, and the speed and the distance are adjustable, thereby ensuring consistency before and after injection; the invention directly uses the syringe as a sample bottle, which can reduce the number of transfers and reduce pollution. Possibly, at the same time, the sample chain can be increased or decreased as needed.
  • the motor control can be injected multiple times, enabling automatic injection and unattended operation.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Physics & Mathematics (AREA)
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Abstract

一种气体自动进样器，包括推进器（1）、传动装置（2）、样品链（3）和进样锥（5）；推进器（1）包括依次连接的步进电机I（11）、丝杆（14）、滑块（12）和光轴（13），且滑块（12）能沿光轴（13）移动；滑块（12）上连接L型压块（15）；传动装置（2）包括步进电机II（22）和主动齿轮（23），主动齿轮（23）通过皮带（24）与从动齿轮（25）相配合；从动齿轮（25）通过传动轴（27）与传动齿轮（21）相连接；样品链（3）包括至少一个圆筒（31），圆筒（31）的一端固定有弹簧抱箍（34）；圆筒（31）设于传动齿轮（21）的齿位内；弹簧抱箍（34）的另一端固定注射器（7），且注射器（7）的出口贯穿圆筒（31）并延伸至所述圆筒（31）的另一端；L型压块（15）的一端能推动注射器（7）的推杆，并使与注射器（7）的出口连接的单向阀（8）压至进样锥（5）的锥内。通过直接将注射器（7）作为进样瓶，减少转移次数，降低污染；样品链（3）可根据需要增减位数，电机控制可多次进样，能实现自动进样。

Description

一种气体自动进样器 技术领域
本发明涉及一种气体自动进样器，属于生态环境领域中的一种进样器。
背景技术
气体样品不同于液体或固体样品，因其更容易散失，测定时主要还是通过手动进样实现(在线仪器除外)，在气体组分分析中，进样是定量分析误差的主要来源之一，尤其是人为手工进样的分析，不同操作者进样的速度、压力有差异，即便同一个操作者前后进样也很难保持一致。
此外样品要经过采集、运输和取样测定等步骤，过程繁琐，且多为手工操作，也会引入很多不确定度，目前有采用硬质瓶作为样品瓶采集和进样，采样前先抽真空，采样时将样品气体压入瓶内使之产生一定正压，进样时在压力作用下注入仪器的进样口，但是样品瓶内的压力难以保持一致，不同的压力会使定量环内的体积产生差别，是造成样品重复性差的重要原因，还有容器的清洗不彻底、气密性差等也会对结果造成影响。目前没有一种低成本、可靠的气体自动进样器出现。
发明公开
本发明的目的是提供一种气体自动进样器，适用于气体样品的自动进样分析，可以与气相色谱仪等气体分析仪连接。
本发明所提供的气体自动进样器，包括推进器、传动装置、样品链和进样锥；
所述推进器包括依次连接的步进电机I、丝杆、滑块和光轴，且所述滑块能沿所述光轴移动；所述滑块上连接一L型压块；
所述传动装置包括相连接的步进电机II和主动齿轮，所述主动齿轮通过一皮带与一从动齿轮相配合；所述从动齿轮通过一传动轴与一传动齿轮相连接；
所述样品链包括至少一个圆筒，所述圆筒的一端固定有弹簧抱箍；所 述圆筒设于所述传动齿轮的齿位内；所述弹簧抱箍的另一端固定所述注射器，且所述注射器的出口贯穿所述圆筒并延伸至所述圆筒的另一端；
所述L型压块的一端能推动所述注射器的推杆，并使与所述注射器的出口连接的单向阀压至所述进样锥的锥内。
所述的气体自动进样器中，所述L型压块的长臂端与所述滑块相连接。
所述的气体自动进样器中，所述注射器的出口连接有两通阀，所述两通阀用于控制注射器的开闭，而所述单向阀用于控制气体只出不进。
所述的气体自动进样器中，所述样品链包括若干个所述圆筒，且呈直链式或环链式排列，以实现连续进样。
所述的气体自动进样器中，相邻两个所述圆筒之间平行排列，且两端通过连接片实现横向连接，并用卡簧进行固定，即通过所述连接片的交替叠加实现多个所述圆筒之间的连接。
所述的气体自动进样器中，所述气体自动进样器还包括一压片，所述压片包括不锈钢片和弹簧螺栓；
所述不锈钢片呈圆弧状，能与所述传动齿轮配合；
所述不锈钢片的一端固定于所述气体自动进样器的壳体上，另一端与所述弹簧螺栓相连接，所述弹簧螺栓固定于所述气体自动进样器的壳体上；通过所述压片实现压紧所述样品链的作用。
所述的气体自动进样器中，所述进样锥的锥孔上还设一通孔，通过所述通孔与一选向阀相连接，所述选向阀的孔位数可根据需要进行调整，所述选向阀的出口可连接仪器不同进样口，并根据需要进行切换。
所述的气体自动进样器中，所述进样锥上设有一接触开关，当所述注射器的出口连通的所述单向阀压至所述进样锥的锥尖时，所述接触开关被触发。
本发明气体自动进样器具有如下优点：
本发明气体自动进样器，通过步进电机精确控制推动距离，且速度、距离均可调，从而确保前后进样一致性；本发明直接将注射器作为进样瓶，可减少转移次数，降低污染可能，同时，样品链可根据需要增减位数，电机控制可多次进样，能够实现自动进样，无人值守。
附图说明
图1为本发明气体自动进样器的左侧视图。
图2为本发明气体自动进样器的正面视图。
图3为本发明气体自动进样器中样品链的分解示意图
图4为本发明气体自动进样器中传动装置的示意图，其中，图4(a)为俯视图，图4(b)为主视图。
图5为本发明气体自动进样器中进样锥与选项阀连接的示意图，其中，图5(a)为立体图，图5(b)为平面图。
图6为本发明气体自动进样器中压片的分解示意图。
图中各标记如下：
1推进器、2传动装置、3样品链、4压片、5进样锥、6选向阀、7注射器、8单向阀、9外壳、10两通阀、11步进电机I、12滑块、13光轴、14丝杆、15L型压块、16接触开关、17管路、21传动齿轮、22步进电机II、23主动齿轮、24皮带、25从动齿轮、26电机基座、27传动轴、28螺帽、31圆筒、32卡簧、33连接片、34弹簧抱箍、41不锈钢片、42弹簧螺栓。
实施发明的最佳方式
下面结合附图对本发明做进一步说明，但本发明并不局限于以下实施例。
如图1和图2所示，本发明提供的一种气体自动进样器，它包括推进器1、传动装置2、样品链3、压片4、进样锥5、选向阀6、注射器7、单向阀8、外壳9和两通阀10；推进器1固定于前后外壳上，传动装置2和进样锥5均固定于后面背板上。样品链3挂在传动装置2上，并由压片4压紧。
如图1所示，推进器1包括依次连接的步进电机I11、丝杆14、滑块12和光轴13，且滑块12能沿光轴13移动。滑块12上连接一个L型压块15，其中L型压块15的长臂端与滑块12相连接，其短臂端能推动注射器7的推杆，并使注射器7出口压入至进样锥5的锥尖内，进样锥5上设有 接触开关16，注射器7出口依次连接两通阀10和单向阀8，并将单向阀8压入至进样锥5的锥内时，接触开关16被触发。
如图3所示，样品链3包括多个圆筒31，相邻两个圆筒31之间平行排列，且两端通过连接片33实现横向连接，并用卡簧32进行固定，进而呈环链式排列。圆筒31的一端固定有弹簧抱箍34，弹簧抱箍34是将弹簧两头绕成直径略小的抱箍用于起固定连接作用，其另一端固定注射器7，且注射器7出口贯穿圆筒31并延伸至圆筒31的另一端。圆筒31能挂于传动齿轮21的齿位内。
如图4所示，传动装置2包括相连接的步进电机II22和主动齿轮23，主动齿轮23通过皮带24与从动齿轮25相配合，从动齿轮25通过传动轴27与传动齿轮21相连接。步进电机II22和传动轴27固定于基座26的正面。传动齿轮21与传动轴27通过键连接实现轴向动联接；传动轴27顶部通过螺纹与螺帽28连接。
如图5所示，进样锥5为一圆形中央具孔锥形结构，锥尖外套一O型圈起到密闭作用，锥尖用于承接注射器7所连接的单向阀8出口；进样锥5的锥孔通过侧壁上的一个通孔沿管路17导至底座侧面，通过管路17可连接至仪器或选向阀6进气口；选向阀6孔位数可根据需要更改。选向阀6出口连接仪器不同进样口，并根据需要进行切换。
如图6所示，压片4包括不锈钢片41和弹簧螺栓42，不锈钢片41中间拱起呈与传动齿轮21配合的圆弧状，一端卷成筒状，通过螺钉固定于后面背板上，并可上下旋转，另一端具豁口，用于配合弹簧螺栓42起到压紧样品链3的作用。
使用本发明气体自动进样器时，首先需将进样锥5出口与仪器进样口相连，或先与选向阀6连接后，再将选向阀6与仪器各进样口逐一连接。
组装样品链3：先将两个圆筒31两端各套上一个连接片33，再继续套上两个连接片33即可多连接一个圆筒31，重复此操作直至样品位数达到需求为止，或者样品链可以做成环形实现连续使用。
样品填装：气体样品被抽入注射器7内，前端加装出气单向阀8，并排空一下单向阀8内的气体，捏住弹簧抱箍34手柄直至将注射器插入样品链3后松开，此时注射器被弹簧抱箍34锁定在样品链3上。依次将所有样 品安装完成。
压链：将样品链3挂至传动齿轮21相应齿位内，按下不锈钢片41并用弹簧螺栓42锁定，旋转弹簧螺栓42调节松紧。
自检：软件控制步进电机完成自检，步进电机I11通过驱动丝杆14旋转带动滑块12上的L型压块15移至最外侧进行复位，步进电机II22通过皮带24将其连接的主动齿轮23扭力转给从动齿轮25，并通过传动轴27带动传动齿轮21旋转，相应带动样品链3实现样品进样、退样操作，步进电机II22自检需完成传动齿轮21旋转一圈再转回原位操作。两个电机自检通过后完成自检。
设定：准备完成后需在控制软件中设定当前孔位号、样品链类型(直连式、环链式)、样品链位数、样品名称、进样深度、进样次数、选向阀出口。
进样：软件根据设定参数控制步进电机II22驱动传动齿轮21将所需样品链3孔位移至进样锥5处。然后驱动步进电机I11带动滑块12上的L型压块15向内移动，压块12推动注射器7向内移动，当注射器7连接的单向阀8出口压紧进样锥5锥尖时触发接触开关16，接触开关将信号传回软件计算推进深度，注射器7内压力达到单向阀8开启压力时，气体被注入进样口，选向阀根据设定切换出口，当推进深度达到要求时停止驱动步进电机I11，然后软件将信号传至仪器开始进样分析，并继续控制步进电机I11完成L型压块15移至最外侧进行复位操作，同时注射器7被弹簧抱箍34弹起推离进样锥5。样品分析完成后，软件驱动步进电机II22进行下一个样品的进样操作。
工业应用
本发明气体自动进样器，通过步进电机精确控制推动距离，且速度、距离均可调，从而确保前后进样一致性；本发明直接将注射器作为进样瓶，可减少转移次数，降低污染可能，同时，样品链可根据需要增减位数，电机控制可多次进样，能够实现自动进样，无人值守。

Claims (8)

  1. 一种气体自动进样器，其特征在于：它包括推进器、传动装置、样品链和进样锥；
    所述推进器包括依次连接的步进电机I、丝杆、滑块和光轴，且所述滑块能沿所述光轴移动；所述滑块上连接一L型压块；
    所述传动装置包括相连接的步进电机II和主动齿轮，所述主动齿轮通过一皮带与一从动齿轮相配合；所述从动齿轮通过一传动轴与一传动齿轮相连接；
    所述样品链包括至少一个圆筒，所述圆筒的一端固定有弹簧抱箍；所述圆筒设于所述传动齿轮的齿位内；所述弹簧抱箍的另一端固定所述注射器，且所述注射器的出口贯穿所述圆筒并延伸至所述圆筒的另一端；
    所述L型压块的一端能推动所述注射器的推杆，并使与所述注射器的出口连接的单向阀压至所述进样锥的锥内。
  2. 根据权利要求1所述的气体自动进样器，其特征在于：所述L型压块的长臂端与所述滑块相连接。
  3. 根据权利要求1或2所述的气体自动进样器，其特征在于：所述注射器的出口连接有两通阀。
  4. 根据权利要求1-3中任一项所述的气体自动进样器，其特征在于：所述样品链包括若干个所述圆筒，且呈直链式或环链式排列。
  5. 根据权利要求4所述的气体自动进样器，其特征在于：相邻两个所述圆筒之间平行排列，且两端通过连接片实现横向连接，并用卡簧进行固定。
  6. 根据权利要求1-5中任一项所述的气体自动进样器，其特征在于：所述气体自动进样器还包括一压片，所述压片包括不锈钢片和弹簧螺栓；
    所述不锈钢片呈圆弧状，能与所述传动齿轮配合；
    所述不锈钢片的一端固定于所述气体自动进样器的壳体上，另一端与所述弹簧螺栓相连接，所述弹簧螺栓固定于所述气体自动进样器的壳体上。
  7. 根据权利要求1-6中任一项所述的气体自动进样器，其特征在于：所述进样锥的锥孔还设有一通孔，通过所述通孔与一选向阀相连接。
  8. 根据权利要求1-7中任一项所述的气体自动进样器，其特征在于：所述进样锥上设有一接触开关，当所述注射器的出口连通的所述单向阀压至所述进样锥的锥尖时，所述接触开关被触发。
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