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

Abstract

The invention relates to a fume heating sampling gun with adjustable barrel length, which comprises a sampling barrel, the sampling barrel includes an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, and the inner cylinder The cylinder is slidably matched with the outer cylinder; a gland is threadedly connected to the front of the inner cylinder, and a sleeve is fixedly connected to the rear end of the outer cylinder; a sampling nozzle is provided at the front end of the gland; The front end of the inner cylinder is provided with a filter cartridge, and one end of the opening of the filter cartridge is fixedly connected with the inner surface of the gland; the end of the filter cartridge away from the gland is provided with a second threaded hole; One end of the trachea is threadedly connected with the second threaded hole, and the other end of the exhaust pipe protrudes through the sleeve; a temperature controller is provided in the sleeve, and a spiral heating coil is provided on the outside of the filter cartridge and the exhaust pipe, and the spiral heating coil Electrically connected with the thermostat. The beneficial effects of the invention are that the structure is reasonable, the use is convenient, the use range is wide, and it is 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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