Polymorphic sample injection device

A sampling device, multi-modal technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of sample air leakage, injury, operation error, etc., to reduce the possibility of leakage, simple structure, improve accuracy and repetitive effect

Pending Publication Date: 2020-04-07
广州顺斡仪表科技有限公司
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Problems solved by technology

[0005] Moreover, because the existing technology mainly adopts artificial manual extrusion type sampling, it may cause the sample to leak into the air, and at the same time, due to the traditional manual extrusion

Method used

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  • Polymorphic sample injection device

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Embodiment Construction

[0030] The specific embodiments of the present invention will be further described below in conjunction with the drawings:

[0031] Such as figure 1 As shown, a multi-modal sample injection device includes a six-way anti-adsorption injection valve 1, three-channel capillary tubes 3, a quantitative switching valve 6, a chromatograph 7, an experimental analyzer 12, and a vacuum diaphragm pump 11. The six ports of the six-way anti-adsorption injection valve 1 are respectively connected to the 6 corresponding air bag sample inlet pagoda connectors 2 through corresponding pipes. In this embodiment, the 6 air bag sample inlet pagoda connectors 2 are respectively For S1-S6, 6 air bag sample inlets, Pagoda connector 2 is used to connect with the sample air bag.

[0032] The three channel capillaries 3 are respectively communicated with three corresponding quick connectors 4 for the sample injection ports of steel cylinders through corresponding pipes, which are S7-S9 in this embodiment.

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Abstract

The invention provides a polymorphic sample injection device. The polymorphic sample injection device comprises a six-way anti-adsorption sample injection valve, a plurality of channel capillary tubes, a quantitative switching valve, a chromatograph and an experimental analyzer, wherein six interfaces of the six-way anti-adsorption sample injection valve are communicated with six air bag sample injection port pagoda joints; the channel capillary tube is communicated with the steel cylinder sample inlet quick connector; a first interface of the quantitative switching valve is communicated withthe six-way anti-adsorption sample injection valve and the plurality of channel capillary tubes; the quantitative switching valve is connected with the chromatograph and the experimental analyzer. Thedevice is simple in structure, the three-way electromagnetic valve and the vacuum diaphragm pump are controlled by matching with the chromatograph, multi-channel gas bag full-automatic sample injection can be achieved, manual extrusion is not needed, and the leakage possibility during gas sample injection is reduced; 48 samples can be analyzed at most once in a full-automatic sample injection analysis process; by adopting constant-pressure constant-flow internal-drawing type sample injection, the leakage phenomenon in the sample injection process is completely eradicated, the stable sample injection pressure is ensured, and the accuracy and repeatability of analysis data are improved.

Description

Technical field [0001] The invention relates to the technical field of toxic gas detection equipment, in particular to a multi-modal sample injection device. Background technique [0002] Gas chromatography (GC for short) is a major scientific and technological achievement that appeared in the 1950s. This is a new separation and analysis technology that has been used in industry, agriculture, national defense, construction, and scientific research. It is widely used. Gas chromatography refers to chromatography that uses gas as a mobile phase. Due to the fast transfer speed of the sample in the gas phase, the sample components can instantly reach equilibrium between the mobile phase and the stationary phase. In addition, there are many substances that can be used as stationary phases, so gas chromatography is a separation analysis method with fast analysis speed and high separation efficiency. [0003] At present, when analyzing gas samples with gas chromatograph, two methods are...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/24
CPCG01N30/02G01N30/24
Inventor 黄汉荣柯伟宁陈卓威
Owner 广州顺斡仪表科技有限公司
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