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Multi-gas-circuit gas autoinjection instrument

A technology of automatic sampling and multiple gas paths, which is applied in the direction of instruments and analytical materials, can solve the problems of insufficient automation and achieve the effects of avoiding cross-contamination, good stability and convenient operation

Active Publication Date: 2015-12-09
榆林启迈科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing gas sampler cannot be used for gas bag sampling and direct sample injection, and the degree of automation is not high enough, and to provide a gas automatic sampler with multiple gas paths

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0034] Embodiment: a kind of multi-gas path gas autosampler, such as figure 1 shown. The device includes an upright support 4, a control box 1 is placed on the top of the support, and a solenoid valve 24, an air pump 23 and a control circuit are arranged in the control box. control circuit such as Figure 6 As shown, it includes a single chip microcomputer 17 , a key module 18 , an air intake control module 19 , a power failure protection module 20 , a display module 21 and a communication module 22 . The key module has only one key, and the whole system starts to run after pressing it, and the operator does not need to do other operations.

[0035] The air intake control module includes a driving unit 191 and an extended latch group 192, the single-chip microcomputer is connected to the air pump through the driving unit, and the single-chip microcomputer is connected to the solenoid valve through the extended latch group. Solenoid valves include 64 direct acting normally c...

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Abstract

The invention relates to a multi-gas-circuit gas autoinjection instrument, solving the problems that an existing gas sample injector is not suitable for air trap sampling and direct sampling and not high in automation degree, and the like. The instrument comprises a support, wherein the support is provided with a control box; the instrument is characterized in that a gas pump is arranged in the control box; the rear end of the gas pump is connected to a gas detection instrument; the front end of the gas pump is connected with a plurality of sample gas pipes and at least one nitrogen pipe; the rear ends of the sample gas pipes and the nitrogen pipe are connected with the gas pump by solenoid valves; the sample gas pipes are connected to gas extraction heads by adapters; the gas extraction heads prick into sampling gas bags, and the bottom of the support is also provided with a nitrogen tank connected with the nitrogen pipe. Multiple gas circuits are arranged for respectively connecting the sample gas sampling gas bags, and continuous sample injection is realized; working gas circuits can be monitored in real time, and gas inlet faults of the multiple gas circuits can be found timely; the nitrogen pipe is adopted for flushing gas circuits at intervals of different sample gas injections, so that cross contamination of different sample gases is avoided.

Description

technical field [0001] The invention relates to a detection instrument, in particular to a gas automatic sampling instrument with multiple gas paths. Background technique [0002] We know that in the daily laboratory gas chromatographic analysis, one of the common gas collection methods is on-site air bag sampling. Sampling brings certain human factors errors, such as inconsistency in sampling time will cause poor repeatability of gas peak spectra. In addition, more and more online gas analysis cannot be done by manual operation. In the past, The manual gas sampling method cannot meet the needs of gas online analysis. The other is syringe gas cylinder sampling. At present, the most common method in the world is syringe gas cylinder sampling, including the original headspace sampler of many imported instruments. This method needs to manually transfer the gas bag sample gas to the glass sample bottle, which is cumbersome and time-consuming. The method of direct sample injec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/10
Inventor 王会
Owner 榆林启迈科技有限公司
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