CN101975834A - Quantitative airblast-proof injection device for gas chromatography sample injection - Google Patents
Quantitative airblast-proof injection device for gas chromatography sample injection Download PDFInfo
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- 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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- injector
- injection
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- quantitative
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- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 238000004817 gas chromatography Methods 0.000 title abstract description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 9
- 239000012159 carrier gas Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
Description
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;
附图3为本发明使用状态示意图。Accompanying
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
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
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CN2010102572280A CN101975834A (en) | 2010-08-19 | 2010-08-19 | Quantitative airblast-proof injection device for gas chromatography sample injection |
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CN2010102572280A CN101975834A (en) | 2010-08-19 | 2010-08-19 | Quantitative airblast-proof injection device for gas chromatography sample injection |
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Citations (4)
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 |
-
2010
- 2010-08-19 CN CN2010102572280A patent/CN101975834A/en active Pending
Patent Citations (4)
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 Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20121220 |
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Effective date of registration: 20121220 Address after: 050021 No. 238 South Sports street, Yuhua Road, Hebei, Shijiazhuang Applicant after: Electric Power Research Institute of Hebei Electric Power Corporation Applicant after: State Grid Corporation of China Applicant after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Applicant before: Hebei Electric Power Research Institute |
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Application publication date: 20110216 |