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Gas chromatography detection device

A gas chromatography and detection device technology, applied in the detection field, can solve the problems of the mutual influence of the cold source and the heat source, the unreasonable use of the heat of the semiconductor refrigeration sheet, etc., and achieve the effect of reducing excess heat dissipation and reducing the impact.

Active Publication Date: 2021-10-26
XIAN JUNENG INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above situation, in order to make up for the technical deficiencies existing in the prior art, the present invention provides a gas chromatographic detection device to solve the problem of mutual influence between the cold source and the heat source due to the close distance between them and the inability to rationally utilize the heat generated by the semiconductor refrigerating sheet for cooling. The heat generated by the end and the cold generated by the cold end during heating

Method used

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Effect test

Embodiment 1

[0021] Embodiment 1, a gas chromatographic detection device, including a sampling device 1, a column thermostat 2 and a detection device 3, the sampling device 1 is used to inject samples and transport carrier gas, and the column thermostat 2 is used to control the temperature of the chromatographic column Temperature, the detection device 3 is used to detect the sample components separated by the chromatographic column, the column thermostat 2 is arranged horizontally, the first chromatographic column 4 and the second chromatographic column 1 are installed in the column thermostat 2, the sampling device 1 and the first chromatographic column The air inlet of the chromatographic column 4 is connected, and the thermal modulator located above the column thermostat 2 is arranged on the column thermostat 2, and the thermal modulator is arranged horizontally, and the air inlet of the thermal modulator is located on the left side of the front side wall of the thermal modulator , the ...

Embodiment 2

[0026] Embodiment 2, on the basis of Embodiment 1, the housing 6 is provided with a first air exchange port and a first exhaust fan located at the hot end of the first semiconductor cooling sheet 7, and the housing 6 is provided with a second semiconductor cooling fan. The second air exchange port and the second exhaust fan at the hot end of the sheet 8, the first exhaust fan and the second exhaust fan discharge the excess heat from the hot end to the thermal modulator, so that the semiconductor cooling sheet can conduct heat transfer stably and quickly, A wind blocking mechanism is arranged between the first semiconductor cooling sheet 7 and the second semiconductor cooling sheet 8, and the wind blocking mechanism includes a dividing plate 23 whose length is arranged along the left and right and a plurality of connecting plates 24 whose length is arranged along the front and rear direction, and the plurality of connecting plates 24 are evenly distributed along the left and rig...

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Abstract

The invention relates to a gas chromatography detection device, which comprises a sample introduction device, a column oven and a detection device, a first chromatographic column and a second chromatographic column are installed in the column oven, a thermal modulator is arranged on the column oven, and the thermal modulator comprises a shell, a first semiconductor chilling plate and a second semiconductor chilling plate. The first semiconductor chilling plate and the second semiconductor chilling plate are located in the shell and oppositely arranged on the two sides of the shell, the length of the first semiconductor chilling plate and the length of the second semiconductor chilling plate are parallel and equal, a first sliding block and a second sliding block are arranged in the shell, the first sliding block makes contact with the cold end of the first semiconductor chilling plate, the second sliding block makes contact with the hot end of the first semiconductor chilling plate, a first air channel is formed in the first sliding block, a second air channel is formed in the second sliding block, a connecting rod is connected between the first sliding block and the second sliding block, a boss is arranged on the connecting rod, a displacement mechanism is arranged on the heat modulator, and the displacement mechanism drives the boss to slide in the length direction of the through groove.

Description

technical field [0001] The invention relates to the field of detection, in particular to a gas chromatography detection device. Background technique [0002] Comprehensive two-dimensional gas chromatography has the advantages of high resolution, large peak capacity, high sensitivity and short analysis time, which makes comprehensive two-dimensional gas chromatography widely used in the field of analysis. One of the key components in comprehensive two-dimensional gas chromatography is the modulator. The performance of the modulator directly determines the detection effect. Because the solid-state thermal modulator has the characteristics of no refrigerant, simple maintenance, and easy and precise temperature control, it is widely used. However, most of the current solid-state thermal modulators have a close distance between the cold source and the heat source. When the cold source is refrigerated, it is easily affected by the heat source, which reduces the cooling effect and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/60
CPCG01N30/02G01N30/06G01N30/60
Inventor 林显彬
Owner XIAN JUNENG INSTR
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