A kind of drainage method based on siphon roof drainage structure

Abstract

The invention discloses a drainage method based on a siphonic roofing drainage structure. The siphonic roofing drainage structure comprises gutter spout funnels and downspouts. The drainage method comprises the steps that first, the siphonic roofing drainage structure is constructed; second, data of the water amount of roofing accumulated water are collected; third, whether data collected by a pressure sensor within the first specified time are less than a preset pressure threshold value or not is judged; fourth, small-flow accumulated water is drained; and fifth, large-flow accumulated wateris drained. By arranging annular reverse ridges on a roofing, flow-guiding pipes with solenoid valves are arranged on the lower parts of the annular reverse ridges, the solenoid valves can be circularly opened and closed according to the actual situations, drainage modes corresponding to the roofing accumulated water amount are selected according to the different roofing accumulated water amount,thus the roofing drainage efficiency can be greatly improved, by arranging pressure sensors in the flow-guiding pipes and arranging liquid level sensors on the outer sides of the annular reverse ridges, roofing drainage can be automatically controlled, the labor intensity of workers can be effectively reduced, and the safety of the workers is ensured.

Description

technical field [0001] The invention belongs to the technical field of roof drainage, and in particular relates to a drainage method based on a siphon type roof drainage structure. Background technique [0002] At present, there are two main ways to drain rainwater on the roof: one is the traditional gravity rainwater drainage system. The effect of gravity goes down the standpipe; this way of drainage is inefficient, requires a large number of pipes, the diameter of the pipes is large, and a slope of 1% to 3% is required, and the installation is also complicated. The other is the siphon rainwater drainage system. In the initial stage of rainfall, when the depth of rainwater on the roof is relatively shallow, the rainwater still uses the principle of gravity to drain the rainwater. When the rainfall increases and the water level on the roof reaches a certain height, the rainwater The bucket will automatically cut off the air, thereby generating a siphon, and the drainage sys...

AI Technical Summary

Problems solved by technology

Although the efficiency of the siphon drainage system is much higher than that of the gravity drainage system, there are still some shortcomings in the siphon drainage system: first, the rainwater still carries a small part of the air into the rainwater bucket, first of all, the drainage efficiency is reduced , and when the air reaches the negative pressure area in the system, the pressure in the negative pressure area will increase, resulting in a poor suction function for rainwater in the negative pressure area, which will affect the drainage efficiency of the entire system; the second is the gap between the roof insulation layer and the waterproof layer The stagnant water is not easy to discharge, and it is easy to cause roof cracks; in addition, because the downpipe is directly buried in the roof, it is inconvenient to clean and replace it

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