Automatic exhaust type fire arrester for positive pressure cabinet

Abstract

The invention provides an automatic exhaust type fire arrester for a positive pressure cabinet. The automatic exhaust type fire arrester comprises a right-angle elbow, wherein one end of the right-angle elbow is connected with the positive pressure cabinet; a conical body is embedded in the other end opening of the right-angle elbow; an inner cavity of the conical body is in an inverted cone shapeand communicates with the right-angle elbow; a gravity ball is placed at a lower opening in the conical body; a fire arresting net is arranged at an upper opening of the conical body; a pressing block is arranged on the upper opening edge of the conical body; and the fire arresting net is compacted on the conical body by the pressing block. According to the automatic exhaust type fire arrester, the fire arresting and exhaust effects are achieved by utilizing the fire arresting net, and the pressure stabilizing and automatic exhaust functions are achieved by utilizing the gravity ball to be matched with a conical static pressure cavity of the conical body, so that the positive pressure cabinet can automatically and safely exhaust, the positive pressure cabinet is ensured to carry out gas replacement and exhaust during positive pressure work, the fire arresting effect and the automatic pressure relief and exhaust effects are effectively achieved during normal work and exhaust, and the internal pressure stabilization of the positive pressure cabinet is ensured.

Description

technical field [0001] The invention relates to an electrical control cabinet, in particular to an automatic exhaust type flame arrester for positive pressure cabinets, which is a flame arrester for positive pressure control cabinets used in dangerous places where flammable and explosive gases exist. Background technique [0002] With the rapid development of the national economy, positive pressure explosion-proof electrical products have been widely used in flammable and explosive places in petroleum, chemical, military, coal, textile, pharmaceutical, food processing, marine transportation and other industries. Safe production and civilized production are an indispensable part of modern chemical production. The traditional positive pressure explosion-proof electrical control cabinet either uses a flame arrester device, or installs an internal thread ball valve at the front end, and manually exhausts it manually, or adds an explosion-proof solenoid valve to realize the safe ...

AI Technical Summary

Problems solved by technology

The automatic and safe exhaust control is realized through the explosion-proof solenoid valve. When the gas source is unstable, the solenoid valve operates frequently, which obviously affects the life of the solenoid valve. Cabinet cost increased significantly

So far, there is no satisfactory solution for the automatic exhaust and fire prevention of positive pressure control cabinets

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