Low-concentration gas booster fan

Abstract

The invention discloses a low-concentration gas booster fan which comprises a fan shell. The fan shell is of a structure with two open ends in the axial direction, a motor is axially installed in the fan shell, a front flow guide cover protruding outwards is installed at one end of the motor, a rear flow guide cover protruding outwards is installed at the other end of the motor, and blades are installed at the shaft end of the motor; the fan shell is radially provided with a water adding pipe close to the front end of the front flow guide cover; the front flow guide cover is installed on one side, away from the motor, of each blade; a dewatering and dust-settling grating is installed in the fan shell; the air outlet end of the fan shell is installed; and a liquid collecting tank with the top being of an open structure is arranged at the bottom, close to the inner side of the dewatering and dust-settling grating, in the fan shell, so that the system is simplified, the investment is reduced, the occupied area is reduced, the operating cost is reduced, and water and dust are effectively removed while pressurization is performed.

Description

technical field [0001] The invention relates to the field of gas energy saving and emission reduction, in particular to a low-concentration gas pressurizing fan. Background technique [0002] The outlet residual pressure of the water ring vacuum pump in the gas extraction station is generally around 5kPa, which is relatively low. If low-concentration gas needs to be used, the low-concentration gas transportation process should be equipped with facilities such as diffusion devices, filtering devices, explosion-proof devices, water-sealed fire-stopping and explosion-relief devices, flame arresters, and dehydration devices, so that low-concentration gas can pass through. The inlet pressure of these facilities to the low-concentration gas utilization device is very low. According to the current operation of low-concentration gas utilization projects, some have affected the utilization of low-concentration gas. [0003] According to the provisions of AQ1076-2009 in the "Design S...

AI Technical Summary

Problems solved by technology

If low-concentration gas needs to be used, the low-concentration gas transportation process should be equipped with facilities such as diffusion devices, filtering devices, explosion-proof devices, water-sealed fire-stopping and explosion-relief devices, flame arresters, and dehydration devices, so that low-concentration gas can pass through. The pressure at the inlet of these facilities to the low-concentration gas utilization device is very low. According to the current operation of low-concentration gas utilization projects, some have affected the utilization of low-concentration gas

[0003] According to the provisions of AQ1076-2009 in the "Design Specifications for Low-concentration Gas Safety Guarantee Transportation System in Coal Mine", wet compressors should be used for low-concentration gas pressurization equipment. , needs supporting circulating water pump, cooling tower and other equipment, so the system is complex, occupies a large area, high cost, and high operating cost

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