a partition door

Abstract

A partition door used for cutting off fluid in a pipeline comprises a door frame and a plurality of sets of door plates arranged in the door frame. The partition door is characterized in that a left baffle (92) and a right baffle (91) are arranged on a left frame body (82) and a right frame body (81) of the door frame respectively, the cross section of the left baffle and the cross section of the right baffle are in the shape of a rectangle with a chipped edge, the chipped edge side of the left baffle and the chipped edge side of the right baffle are opposite to the door plates, a rigid air pipe (11) penetrates through the left baffle, a rigid air pipe (11) penetrates through the right baffle, a plurality of air holes (12) are evenly distributed in the pipe wall of each air pipe in the axial direction, each air pipe is sleeved with a high-temperature-resistant rubber tube (13), the bottom end of each rubber tube is closed, the top of each rubber tube stretches out of an upper frame body, the outer wall of the top of each rubber tube is sealed to the upper frame body, the inner wall of the top of each rubber tube is sealed to the outer wall of the corresponding air pipe, and the air pipes are connected with an external high-pressure air source. When the door plates are located at the closed position, high-pressure air can be input to the gas pipes so that the rubber tubes can expand, the rubber tubes are exposed out of the left baffle and the right baffle, the exposed surfaces of the rubber tubes are tightly attached to the two side faces of the door plates, and sealing between the door plates and the door frame is achieved.

Description

technical field [0001] The invention relates to a partition door for blocking fluid in a pipeline, which comprises a door frame connected to the pipeline and a double-layer louver-type door panel arranged in the door frame, and the partition door can be closed and opened by rotating the door panel. Background technique [0002] The boiler system of the thermal power plant is generally equipped with a desulfurization device, which introduces the flue gas in the boiler flue into the desulfurization device for purification, and then discharges it through the chimney of the boiler. An important part of the desulfurization device is the partition door installed in the flue of the desulfurization device. When the desulfurization device is working normally, the partition door is opened. When the desulfurization device is overhauled, the partition door is closed. When the partition door is closed, the requirement to enter the desulfurization device is zero. The existing partition do...

AI Technical Summary

Problems solved by technology

The existing partition door includes a door frame connected in the pipeline and a double-layer louver door panel arranged in the door frame. In order to improve the sealing performance after the panels are closed, a sealing shrapnel is provided between the adjacent door panels, and the door panels are interlayered. Input high-pressure air into the cavity of the door panel, so that the pressure in the cavity of the door panel is greater than the pressure of the flue gas in the flue, so that the smoke cannot pass through the gap between the door panels; but when the door panel rotates, there will be friction between the left and right sides and the door frame. There will be a gap between the left and right sides of the door panel and the door frame, which will consume a lot of high-pressure air, cause the pressure in the cavity of the door panel to drop, and affect the sealing performance of the partition door

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