Superfine particles sampling device

A sampling device and particle technology, applied in the field of ultra-fine particle sampling devices, can solve the problems of inability to extract ultra-fine particles, unsatisfactory cooling efficiency of sampling tubes, and inability to guarantee the accuracy of test response time, etc., and achieve excellent cooling effect and continuous sampling. , the effect of reducing the overall temperature

Inactive Publication Date: 2005-01-26
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

If there is no cooling system, it can only be used in low and medium temperature environments. If it works for a long time in a high temperature environment, the sampling tube will be burned out due to the high temperature. Even if the existing cooling system still has the cooling efficiency of the sampling tube head Not an ideal situation; if there is no dilution system, it is impossible to extract ultrafine particles, even if the particles are extracted by other methods, the accuracy of the test reaction time cannot be guaranteed

Method used

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  • Superfine particles sampling device
  • Superfine particles sampling device
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Embodiment Construction

[0009] Below in conjunction with example and accompanying drawing, the present invention is described in further detail.

[0010] As shown in the figure, one end of the central sampling pipe 5 is connected to the pipe head 1, and the other end is connected to an air pump to extract high-temperature smoke samples. Other collection and analysis devices. The central sampling tube 5 is covered with an outer casing 2 . Between the central sampling pipe 5 and the outer casing 2, an inlet pipe 3 for cooling water and an outlet pipe 3' for cooling water are provided. The mouth of water inlet pipe 3 is positioned at the lower end of central sampling pipe 5, and the nozzle of outlet pipe 3' is positioned at the upper end of central sampling pipe 5, forming a cooling water circuit to cool the sample taken, so as to realize continuous sampling under high temperature. Two nitrogen pipes 6, 7 are arranged between the central sampling pipe 5 and the outer sleeve pipe 2, and the mouths of t...

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Abstract

This invention discloses a sampling device for ultrafine grain and its tip is located on the upper edge of central sampling tube while outer tube covers the central tube. There fixes inflow and outflow tubes for cooling between the layers, and the tip of the inflow tube is located in the end portion of central sampling tube and that of the outflow tube is located in the upper portion. There locate two diluting tube between outer tube and central sampling tube and their air vent is symmetrically located on the tube tip. The tip, central sampling tube and outer tube form a sealing cavity. The invention can dilute the gas of high temperature to ensure effective sampling and prevent the sample from reaction in the tube. This invention is especially suitable for the sampling of ultrafine grain with high temperature environments such as metallurgy furnace,industrial furnace, etc.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an ultrafine particle sampling device. Background technique [0002] Ordinary ultrafine particle sampling devices only have a sampling system, or only a sampling system and a dilution system; or only a sampling system and a cooling system. If there is no cooling system, it can only be used in low and medium temperature environments. If it works for a long time in a high temperature environment, the sampling tube will be burned out due to the high temperature. Even if the existing cooling system still has the cooling efficiency of the sampling tube head Not an ideal situation; if there is no dilution system, it is impossible to extract ultrafine particles, even if the particles are extracted by other methods, the accuracy of the reaction time of the test cannot be guaranteed. Contents of the invention [0003] The object of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/00G01N1/26G01N1/28G01N1/38
Inventor 徐明厚郑楚光刘小伟柳朝晖于敦喜黄建辉
Owner HUAZHONG UNIV OF SCI & TECH
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