Draining system and ship vapor-water circulation dynamic system

Abstract

The invention discloses a draining system. The draining system comprises a draining generating device draining pipeline and a condenser, wherein the draining generating device draining pipeline is used for outputting drained water waiting to be subjected to cooling and pressure reduction. A draining pipeline draining pipeline is connected to the position between a draining pipeline water inlet ofthe condenser and a water outlet of the draining generating device draining pipeline. A draining cooler draining pipeline and a pressure reduction valve draining pipeline are sequentially arranged onthe draining pipeline draining pipeline in the flowing direction of water in the draining pipeline draining pipeline. The invention further provides a ship vapor-water circulation dynamic system. According to the draining system, the temperature of the drained water coming out from the draining cooler is low, no thermal impact can be generated to the condenser, meanwhile, the pressure of the drained water entering the condenser is matched with the working pressure of the condenser, no flashing phenomenon can happen on drained water in the condenser, the situation that the flowing speed is toohigh cannot occur neither, washing and damage to heat exchanging tubes of the condenser are avoided accordingly, the safety and the reliability of the condenser are improved, and the service life of the condenser is prolonged.

Description

technical field [0001] The invention relates to the field of ship steam-water circulation power system, in particular to a drainage system and ship steam-water cycle power system. Background technique [0002] At present, the condensed water or separated water of various heat exchangers, air extractors, steam-water separators and other equipment in my country's ship steam-water cycle power system is transported to the condenser through the secondary circuit drainage system, and a steam trap or steam trap is set between the equipment and the condenser. Steam trap, through the steam trap or the pressure difference between the front and back of the trap to achieve water drainage smoothly. However, when the hydrophobic pressure is high, the temperature corresponding to the hydrophobic is also high. When the high-temperature and high-pressure hydrophobic water enters the vacuum condenser, flash evaporation will occur, forming a mixture of soda and water. The flow rate of the stea...

AI Technical Summary

Problems solved by technology

The drainage of the discharge water evaporator is in a state of high temperature and high pressure. During the process of discharging to the condenser, the drainage is flashed and vaporized, and the drainage is transformed into a gas-liquid two-phase mixture. The flow is accelerated under a large pressure difference, so that the steam-water mixture flushes the condenser at a high speed to transfer heat. The tube bundle will cause erosion damage, and even cause damage to the heat transfer tube bundle, causing seawater to infiltrate and pollute the water quality of the secondary circuit

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