Municipal drainage system

Abstract

The invention relates to a municipal drainage system, which comprises at least two drainage mechanisms implementing stepwise drainage. One drainage mechanism comprises a drain pump (1) mounted in a manhole (2). The second drainage mechanism comprises a next-level drain pump (11) mounted in a next-level manhole (12). The drain pump (1) discharges water leaking into the manhole (2) from the surface through a drain pipe (4) to the next-level manhole (12), and the next-level drain pump (11) discharges accumulated water inside the next-level manhole (12) to a discharge destination (9). Based on the existing actual condition, an existing drainage system is substantially unchanged, and only the drain pump (1), the drain pipe (4) and a control device (5) are mounted in the existing drainage system. The municipal drainage system is automatically used under special conditions, discharge of accumulated water is accelerated, and urban waterlogging can be avoided. The municipal drainage system is simple, feasible, reliable in control, low in operation cost and effective in drainage and meets environmental requirements.

Description

technical field [0001] The invention relates to a municipal drainage system, in particular to a municipal drainage system used in large and medium-sized cities with poor drainage, and belongs to a modification technology of the municipal drainage system. Background technique [0002] Due to design changes and changes in use functions of the municipal drainage system, some pipelines in the drainage system are not smooth enough, and the generally designed flow rate is too small. When the rainfall is heavy or rapid, the drainage is insufficient, causing urban waterlogging and serious water accumulation; or due to water supply pipes Damaged roads and a large amount of water leakage will also cause water accumulation in the city. The above phenomena often appear in large and medium-sized cities, seriously affecting traffic travel and life. Since the drainage pipes often adopt self-flowing drainage with height difference, the pressure difference is small, the flow rate is low, an...

AI Technical Summary

Problems solved by technology

Since the drainage pipes often adopt self-flowing drainage with height difference, the pressure difference is small, the flow rate is low, and the drainage capacity is extremely limited, and the reconstruction of one section of the pipeline is only to transform the drainage accumulation point from one place to another, which cannot fundamentally solve the problem

In addition, since the municipal drainage system has been pre-buried below the urban ground, if all the drainage pipes are excavated and reinstalled, the construction period will be long and the cost will be extremely high

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