A negative pressure drainage system and drainage method

Abstract

The invention discloses a negative pressure drainage system and a drainage method. The drainage system comprises a vacuum valve pit, a vacuum pot, a first valve, a water pumping pipe, a vacuum pipeline and an air inlet pipe, wherein a first end of the water pumping pipe extends into the bottom of the vacuum valve pit; a second end of the water pumping pipe is connected with the vacuum pot via the vacuum pipeline; the first valve is arranged between the vacuum valve pit and the vacuum pot; a first end of the air inlet pipe is communicated with the water pumping pipe; a second end of the air inlet pipe is communicated with the atmosphere pressure; an interface between the air inlet pipe and the water pumping pipe is arranged over the second end of the water pumping pipe; water flows in the vacuum valve pit enters the vacuum pot and decreases to a lower limit of a preset liquid level; and after preset time, the first valve is closed. Realistic foundation is laid for theoretical research on the negative pressure drainage system; and an existing system can be simulated, so operation stability can be improved and daily maintenance and management can be facilitated.

Description

【Technical field】 [0001] The invention relates to a negative pressure drainage system and a drainage method. 【Background technique】 [0002] The negative pressure drainage system is a beneficial supplement to the traditional drainage system, which is in line with the emerging concept of ecological drainage. At present, the main domestic projects using negative pressure drainage system include the negative pressure drainage system of Shanghai F1 Circuit, the negative pressure drainage system of Guangzhou Baiyun International Conference Center, and the vacuum sewage discharge system of Shanghai South Railway Station. [0003] Compared with the traditional gravity sewage drainage system, the negative pressure drainage system has the following characteristics: no slope is required for pipeline laying, and the application range is wide; the system is highly sealed; the pipe diameter is small, the buried depth is shallow, there is no silt, and the operating cost is low. As a new ...

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Problems solved by technology

As a new type of drainage system, the negative pressure drainage system has great application potential, wide use occasions and superior engineering and technical economic advantages, but on the one hand, it has not been recognized and accepted by people, on the other hand Constrained by traditional drainage systems, negative pressure drainage systems are rarely used in my country, and there is no systematic research

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