Sampling device and sampling method for volatile organic compounds on open liquid level
A volatile organic compound and sampling device technology, which is applied to sampling devices, measuring devices, instruments, etc., can solve the problems of difficulty in detecting and sampling volatile organic compounds on open liquid surfaces, save installation and disassembly time, improve detection efficiency, and is easy to use. The effect of installation
Pending Publication Date: 2022-07-19
PETROCHINA CO LTD
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[0004] The main purpose of the present invention is to provide a sampling device and sampling method for volatile organic compounds on an open liquid surface, so as to solve the problem of difficult sampling in the detection of open liquid surface volatile organic compounds in the prior art
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Embodiment 2
[0052] The difference from the first embodiment is that the buckle structure is different.
[0053] Specifically, the buckle structure includes a first semicircular arc structure and a second semicircular arc structure that can be opened and closed, and the first end of the first semicircular arc structure and the first end of the second semicircular arc structure can be pivoted The second end of the first semi-circular arc structure is provided with a hook, the second end of the second semi-circular arc structure has a clamping slot matched with the hook, the first semi-circular arc structure and the second semi-circular arc structure The space enclosed by the fastening is adapted to the outer peripheral surface of the sampling tube 10 . This arrangement can also ensure the assembly strength of the sampling tube 10, and at the same time, it will not squeeze the sampling tube 10, will not affect the stable transmission of volatile organic compounds in the sampling tube 10, and...
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The invention provides a sampling device and a sampling method for volatile organic compounds on an open liquid level. The sampling device for the volatile organic compounds on the open liquid level comprises a calibration rod and a sampling device, the calibration rod is provided with scales, the scales extend to the two ends of the calibration rod, and the calibration rod can be arranged at a to-be-detected open pool; one end of the sampling pipe is provided with a sampling port, and the sampling port is arranged towards the liquid level of the open pool to be detected; the other end of the sampling pipe is connected with an air inlet of the detection mechanism; wherein the sampling pipe is detachably connected with the calibration rod through a fixing structure, the extension directions of the sampling pipe and the calibration rod are the same, and the distance between the liquid level and the opening of the open pool to be measured can be measured through the calibration rod; and moving the sampling tube by referring to the scales of the calibration rod to adjust the distance between the sampling port and the liquid level and the distance between the sampling port and the side wall of the open pool to be detected. The problem that in the prior art, sampling is difficult when volatile organic compounds on the open liquid level are detected is solved.
Description
technical field [0001] The invention relates to the technical field of chemical experimental equipment, in particular to a sampling device and a sampling method for volatile organic compounds on an open liquid surface. Background technique [0002] At present, the state has put forward more specific requirements for the emission monitoring of volatile organic compounds from various unorganized emission sources. According to "Technical Guidelines for Detection of Volatile Organic Compounds Discharged from Leaks and Open Liquid Surfaces" HJ733-2014, the requirements for open liquid levels are: "...the top of the sampling probe of the detection instrument is 300mm away from the pool wall and 100mm away from the liquid surface... "In the actual production process, the sampling and testing of volatile organic compounds in various open liquid surfaces, such as waste liquid pools and sewage pools, are inconvenient to operate and have potential safety hazards. For example: the heig...
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Login to View More IPC IPC(8): G01N1/22G01N33/00
CPCG01N1/22G01N33/0047
Inventor 王华鹏再拉甫·吾不艾山张蕾蕾刘生丽斯绍雄郭建江吴永花于文芳包思聪
Owner PETROCHINA CO LTD