CN101975834A - Quantitative airblast-proof injection device for gas chromatography sample injection - Google Patents

Quantitative airblast-proof injection device for gas chromatography sample injection Download PDF

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Publication number
CN101975834A
CN101975834A CN2010102572280A CN201010257228A CN101975834A CN 101975834 A CN101975834 A CN 101975834A CN 2010102572280 A CN2010102572280 A CN 2010102572280A CN 201010257228 A CN201010257228 A CN 201010257228A CN 101975834 A CN101975834 A CN 101975834A
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Prior art keywords
injector
injection
syringe
gas
quantitative
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CN2010102572280A
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Chinese (zh)
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张若飞
侯双林
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
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Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
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Priority to CN2010102572280A priority Critical patent/CN101975834A/en
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Abstract

The invention relates to a quantitative airblast-proof injection device for gas chromatography sample injection, which comprises an injector shell, an injection head sleeved on one end of the injector and an injector plunger rod inserted in the inner cavity of the injector shell, wherein the wall of the inner cavity of the injector is provided with an anti-fall clamping ring. According to the needs of a user, the anti-fall clamping ring of the invention can be arranged at a corresponding position for accurate quantitation; meanwhile, with respect to the frequent airblast in operation, the anti-fall clamping ring of the invention also can prevent the air from ejecting the injector pull rod out of the injector shell. In the invention, the detachable pull rod is arranged at the bottom end of the plunger rod of the injector, and the injector device is designed according to artificial mechanics and therefore can apply a force conveniently and improve the handfeel of injection personnel.

Description

一种用于气相色谱进样的定量防气冲注射装置 A Quantitative Anti-gas Shock Injection Device for Gas Chromatography Sample Injection

技术领域technical field

本发明涉及一种用于气相色谱进样的定量防气冲注射装置。The invention relates to a quantitative anti-gas shock injection device for gas chromatography sampling.

背景技术Background technique

在进行气相色谱试验时,需要使用注射器进行置换气体的进样,常见的注射器为单针头直管式,而进样部位处气体压力较大,容易将直筒式注射器的拉杆部分顶出,将会造成以下几点危害:When performing gas chromatography experiments, it is necessary to use a syringe to inject the replacement gas. The common syringe is a single-needle straight tube, and the gas pressure at the sampling site is relatively high. It is easy to push out the rod part of the straight syringe, which will cause the following hazards:

1.仪器基线漂移:由于顶出时必然带出一部分载气,所以会造成基线漂移,从而延迟色谱再次进样的时间,使色谱高效快速分离的效果变差。1. Instrument baseline drift: Since a part of the carrier gas is inevitably brought out when ejecting, it will cause baseline drift, thereby delaying the re-injection time of the chromatogram, and deteriorating the effect of high-efficiency and rapid separation of the chromatogram.

2.使试验精度变差:2. Make the test accuracy worse:

a.由于气体压力大,易顶出注射器的拉杆部分,现实情况存在较多的是:如密封程度尚可时,会使拉杆产生一定的纵向位移,此时如全力将载气及分析样气全部顶出至色谱柱内,可以最大程度的弥补损失。但这样做也会使精度减低,主要是由于载气的稀释作用使气体在色谱系统内流动时间变长,从而导致色谱峰展宽变宽,影响测量精度。a. Due to the high pressure of the gas, it is easy to push out the draw rod part of the syringe. The reality is that if the degree of sealing is acceptable, the draw rod will have a certain longitudinal displacement. At this time, if the carrier gas and the analysis sample gas are fully All of them are ejected into the chromatographic column, which can make up for the loss to the greatest extent. But doing so will also reduce the accuracy, mainly because the dilution of the carrier gas makes the flow time of the gas in the chromatographic system longer, which leads to the broadening and broadening of the chromatographic peaks and affects the measurement accuracy.

b.普通进样器为容量1ml的注射器,一般无定量功能,需要人工手动将气体推至0.5ml处,这样便导致色谱分析气的注入精度变差,使整个试验准确度及重复性下降。b. Ordinary injectors are syringes with a capacity of 1ml, which generally have no quantitative function, and need to manually push the gas to 0.5ml, which will lead to poor injection accuracy of chromatographic analysis gas and reduce the accuracy and repeatability of the entire test.

3.使试验无法进行:根据国家及行业标准,油色谱采用5ml氮气置换油中溶解气体,这样一般的油中置换气体将会很小(有的油仅能置换出1ml气体)而进样气量为0.5ml.试验必须有洗针步骤,这样将会使气量本来就很小的置换气消耗完毕,如果载气将拉杆顶出,最直接的后果就是使置换出的气体无法满足试验要求,而导致试验失败。3. Make the test impossible: According to the national and industry standards, oil chromatography uses 5ml nitrogen to replace the dissolved gas in the oil, so that the replacement gas in the general oil will be very small (some oils can only replace 1ml of gas) and the sample gas volume It is 0.5ml. The test must have a needle washing step, which will consume the replacement gas with a small volume. If the carrier gas pushes the rod out, the most direct consequence is that the replaced gas cannot meet the test requirements. causing the test to fail.

发明内容Contents of the invention

本发明所要解决的技术问题是提供一种可防止气冲造成拉杆脱落现象、还可根据需要设置注射量的用于气相色谱进样的定量防气冲注射装置。The technical problem to be solved by the present invention is to provide a quantitative anti-air-shock injection device for gas chromatographic sample injection, which can prevent the tie rod from falling off due to air-shock, and can also set the injection volume according to needs.

本发明采用如下技术方案:The present invention adopts following technical scheme:

本发明包括注射器壳体、套装在注射器壳体一端的注射头、以及套装在注射器壳体内腔的注射器顶塞杆,所述的注射器内腔壁上设置有防脱落卡环。The invention comprises a syringe housing, an injection head sleeved at one end of the syringe housing, and a syringe top plug rod sleeved in the inner cavity of the syringe housing, and an anti-falling snap ring is arranged on the inner cavity wall of the syringe.

本发明注射器顶塞杆底端设置有可拆卸的拉杆。A detachable pull rod is arranged at the bottom end of the plunger rod of the syringe of the present invention.

本发明的积极效果如下:The positive effects of the present invention are as follows:

1.本发明专利在注射装置内壁上设置有一对特殊的卡环,可以起到准确定量的作用,普通进样器无定量功能,需要人工手动将置换气推至一定刻度处进样。专利申请有卡环的结构可每次不用手动推拉,起到自行定量效果。例如:电力系统气相色谱试验进样量标准要求为0.5ml,无论什么样品,每次进样都是0.5ml,这样便可以将注射装置内部容积,依据国家标准计量器具定容到0.5ml,根据定容位置将卡环固定粘接在壳体内壁,一旦固定好之后便为不可动部分,这样每次取气时,注射装置气体容积便固定为0.5ml。同理可以依据需求方要求,定做任意容积要求的注射装置,使气体进样的人为操作极大的降低。1. The invention patent has a pair of special clasps on the inner wall of the injection device, which can play the role of accurate quantification. The ordinary sample injector has no quantitative function, and it needs to manually push the displacement gas to a certain scale to inject the sample. The structure of the patented clasp ring can achieve self-quantitative effect without manual push and pull every time. For example: The standard requirement for the injection volume of the gas chromatography test of the power system is 0.5ml. No matter what the sample is, each injection is 0.5ml. In this way, the internal volume of the injection device can be adjusted to 0.5ml according to the national standard measuring instrument. Fix the snap ring on the inner wall of the shell at the fixed volume position, and once it is fixed, it will be an immovable part, so that the gas volume of the injection device will be fixed at 0.5ml each time the gas is taken. In the same way, injection devices with arbitrary volume requirements can be customized according to the requirements of the demand side, so that the manual operation of gas sampling can be greatly reduced.

2.本发明专利在注射装置底部设计的卡环,也可以起到防气冲功能,杜绝色谱仪基线漂移、试验精度变差、试验无法进行等现象的发生。2. The clasp designed at the bottom of the injection device in the patent of the present invention can also play the function of preventing air shock, and prevent the occurrence of phenomena such as baseline drift of the chromatograph, poor test accuracy, and test failure.

3.注射装置为人工力学设计,便于发力,提高了注射人员的手感。3. The injection device is designed with artificial mechanics, which is easy to exert force and improves the hand feeling of the injection personnel.

4.针头部位为可开式设计,拉杆可拆卸,这两点在针头堵塞时可以起到方便清洗的作用。4. The needle part is designed to be openable, and the pull rod is detachable. These two points can facilitate cleaning when the needle is blocked.

附图说明Description of drawings

附图1为本发明结构示意图;Accompanying drawing 1 is a structural representation of the present invention;

附图2为本发明轴测剖视示意图;Accompanying drawing 2 is axonometric sectional schematic diagram of the present invention;

附图3为本发明使用状态示意图。Accompanying drawing 3 is the schematic diagram of the use state of the present invention.

在附图中:1注射头、2注射器壳体、3注射器顶塞杆、4拉杆、5防脱落卡环。In the accompanying drawings: 1 injection head, 2 syringe housing, 3 syringe top plug rod, 4 pull rod, 5 anti-falling snap ring.

具体实施方式Detailed ways

附图1、2、3所示为本发明的一个实施例,本发明包括注射器壳体2、套装在注射器壳体2一端的注射头1、以及套装在注射器壳体2内腔的注射器顶塞杆3,注射头1与注射器壳体2采用分体设计,当注射头1堵塞时可以起到方便清洗的作用,所述的注射器2内腔壁上设置有防脱落卡环5,本发明防脱落卡环5可根据使用者需要设计在注射器壳体2的相应位置,从而起到准确定量的作用,同时由于工作时经常会有气冲现象,本发明的防脱落卡环5还可防止气体将注射器拉杆3从注射器壳体2顶出。Accompanying drawing 1, 2, 3 shows an embodiment of the present invention, and the present invention comprises syringe housing 2, the injection head 1 that is sleeved on one end of syringe housing 2, and the syringe top plug that is sleeved in syringe housing 2 inner cavity The rod 3, the injection head 1 and the syringe housing 2 adopt a split design, which can facilitate cleaning when the injection head 1 is blocked. The inner wall of the syringe 2 is provided with an anti-falling snap ring 5. The fall-off snap ring 5 can be designed at the corresponding position of the syringe housing 2 according to the needs of the user, so as to play an accurate and quantitative role. At the same time, because there is often an air shock phenomenon during work, the anti-fall snap ring 5 of the present invention can also prevent gas Push the syringe lever 3 out of the syringe housing 2 .

本发明注射器顶塞杆3底端设置有可拆卸的拉杆4,注射装置采用人工力学设计,便于发力,提高了注射人员的手感。The bottom end of the injector plug rod 3 of the present invention is provided with a detachable pull rod 4, and the injection device adopts artificial mechanical design, which is convenient for exerting force and improves the hand feeling of the injection personnel.

Claims (2)

1.一种用于气相色谱进样的定量防气冲注射装置,其特征在于其包括注射器壳体(2)、套装在注射器壳体(2)一端的注射头(1)、以及套装在注射器壳体(2)内腔的注射器顶塞杆(3),所述的注射器(2)内腔壁上设置有防脱落卡环(5)。1. A quantitative anti-gas shock injection device for gas chromatographic sampling is characterized in that it includes a syringe housing (2), an injection head (1) that is sleeved on one end of the syringe housing (2), and is sleeved on the syringe The syringe plug rod (3) in the inner cavity of the housing (2), and the inner cavity wall of the syringe (2) is provided with an anti-falling snap ring (5). 2.根据权利要求1所述的一种用于气相色谱进样的定量防气冲注射装置,其特征在于注射器顶塞杆(3)底端设置有可拆卸的拉杆(4)。2. A quantitative anti-gas shock injection device for gas chromatographic sampling according to claim 1, characterized in that a detachable pull rod (4) is provided at the bottom end of the top plug rod (3) of the syringe.
CN2010102572280A 2010-08-19 2010-08-19 Quantitative airblast-proof injection device for gas chromatography sample injection Pending CN101975834A (en)

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Application Number Priority Date Filing Date Title
CN2010102572280A CN101975834A (en) 2010-08-19 2010-08-19 Quantitative airblast-proof injection device for gas chromatography sample injection

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CN101975834A true CN101975834A (en) 2011-02-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2741049Y (en) * 2004-11-10 2005-11-16 辽宁石油化工大学 Solid sampler feeder of gas-phase chromatograph
CN201034986Y (en) * 2007-02-13 2008-03-12 西南科技大学 Airtight sampling needle and its coupling device
CN201453771U (en) * 2009-07-22 2010-05-12 张勤修 anti-extrusion syringe
CN201788177U (en) * 2010-08-19 2011-04-06 河北省电力研究院 Anti-shock Injection Unit for Gas Chromatographic Sampling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2741049Y (en) * 2004-11-10 2005-11-16 辽宁石油化工大学 Solid sampler feeder of gas-phase chromatograph
CN201034986Y (en) * 2007-02-13 2008-03-12 西南科技大学 Airtight sampling needle and its coupling device
CN201453771U (en) * 2009-07-22 2010-05-12 张勤修 anti-extrusion syringe
CN201788177U (en) * 2010-08-19 2011-04-06 河北省电力研究院 Anti-shock Injection Unit for Gas Chromatographic Sampling

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Owner name: STATE GRID CORPORATION OF CHINA HEBEI ELECTRIC POW

Effective date: 20121220

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Address after: 050021 No. 238 South Sports street, Yuhua Road, Hebei, Shijiazhuang

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Applicant after: Hebei Electric Power Construction & Adjustment Research Institute

Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang

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Application publication date: 20110216