Open single-pipe long-distance water conveying system and water attack protection method

Abstract

The invention relates to an open type single-pipe long-distance water conveying system and a water attack protection method. The open type single-pipe long-distance water conveying system comprises an initial heat supply station, a water-heat separation station, a long-distance conveying single pipe and at least one relay pump station, wherein the initial heat supply station is internally provided with a water-heat coproduction unit and an initial station pump station, the water-heat coproduction unit is used for pumping seawater and producing high-temperature fresh water, and the initial station pump station is used for pressurizing and sending out the high-temperature fresh water; a water-heat separation unit is arranged in the water-heat separation station and is used for releasing heat of the high-temperature fresh water into normal-temperature fresh water and heat; the head end of the long-distance single pipe is connected with a fresh water outlet of the water-heat coproduction unit, and the tail end of the long-distance single pipe is connected with an inlet of the water-heat separation unit; and the relay pump station is arranged on the long-distance conveying single pipe and used for providing long-distance conveying power for a heat conveying medium in the long-distance conveying single pipe. According to the open type single-pipe long-distance water conveying system, stable conveying of high-temperature fresh water can be achieved, transient water attack hazards under an accident working condition are effectively prevented, and the safety and reliability of the system are improved.

Description

technical field [0001] The invention belongs to the technical field of heat supply and water delivery, and in particular relates to an open single-pipe long-distance water delivery system and a water hammer protection method. Background technique [0002] According to internationally recognized standards, per capita water resources of less than 500 cubic meters are extremely water-scarce, and the per capita water resources of northern coastal provinces and cities in my country, including Beijing, are even less than 300 cubic meters. Among the 669 cities in my country, more than 400 lack water supply, nearly 110 cities are seriously short of water, and 30 cities with a population of one million suffer from water shortage for a long time. Seawater desalination technology is a measure to solve the water shortage problem, but it is difficult to fully apply it because of its high cost. [0003] In order to solve the problem of clean heat supply and water shortage in the northern...

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Problems solved by technology

There are no water hammer protection measures for high-temperature open systems in the prior art, and water hammer problems caused by high-temperature water delivery systems can cause economic losses of hundreds of millions of yuan, and even life-threatening

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