A flue dust heating and sampling gun with an adjustable barrel length

Abstract

The invention relates to a flue dust heating and sampling gun with an adjustable barrel length. The gun includes a sampling barrel. The sampling barrel includes an inner cylinder and an outer cylindersleeving the inner cylinder. The inner cylinder and the outer cylinder are in a slide match. The front part of the inner cylinder is in threaded connection with a gland. The rear end of the outer cylinder is fixedly connected to a sleeve. A sampling nozzle is disposed in front of the gland. The front end of the inner cylinder is provided with a filtration cylinder. An opening end of the filtration cylinder is fixedly connected to the inside surface of the gland. A filtration cylinder end far from the gland is provided with a second threaded hole. The gun also includes an assembled type exhaust tube. One end of the exhaust tube is in threaded connection with the second threaded hole, and the other end of the exhaust tube extends out of the sleeve. A temperature controller is disposed in the sleeve. A spiral heating coil is disposed outside the filtration cylinder and the exhaust tube, and is electrically connected to the temperature controller. A beneficial effect of the gun is that the gun is reasonable in structure design, convenient to use, large in application range, and convenient and easy to carry and transport.

Description

technical field [0001] The invention relates to the technical field of environmental protection monitoring equipment, in particular to a smoke and dust heating sampling gun with adjustable barrel length. Background technique [0002] Soot sampling is an important part of soot emission, equipment performance test and environmental protection supervision. When sampling the soot content of the measuring point after dust removal, desulfurization and denitrification equipment, a soot sampling device is required. According to relevant national standards, the sampling position should be determined according to the size of the flue when sampling smoke and dust. For example, when sampling smoke and dust from a wide flue, there will be multiple sampling points in the same radial direction, so there are strict requirements on the length of the sampling gun. However, too long sampling gun is not conducive to processing, cannot guarantee the strength of the gun body, and is not easy to a...

AI Technical Summary

Problems solved by technology

However, too long sampling gun is not conducive to processing, cannot guarantee the strength of the gun body, and is not easy to adjust in time according to the size of the wide flue. At the same time, due to site constraints, too long sampling gun is not easy to transport

[0003] When sampling wet flue gas and dust, due to the large temperature difference between the inside and outside of the sampling gun, the moisture in the wet flue gas condenses and mixes with the dust and acidic substances in the flue gas, which will corrode the inside of the sampling gun and even block the airway. At the same time, it will also make the sampling filter cartridge wet and soft, or even rupture, which will affect the removal and weighing of the filter cartridge

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