CN-121974423-A - Water-making air-extracting system

CN121974423ACN 121974423 ACN121974423 ACN 121974423ACN-121974423-A

Abstract

The invention relates to the technical field of nuclear power, and provides a water making and air extracting system which comprises a water making subsystem, a refrigerating subsystem and an absorber, wherein the water making subsystem is used for converting fresh water or seawater into purified water, the refrigerating subsystem is used for converting saturated steam into water steam, the absorber is connected with an air extracting pipe and an exhaust pipe, the air extracting pipe is connected with an outlet of the water making subsystem and is used for extracting air and water steam in the water making subsystem into the absorber, and a lithium bromide solution is arranged in the absorber and is used for absorbing the water steam. The water making air extraction system can absorb water vapor, realizes the simultaneous operation of refrigeration and air extraction, meets the air extraction requirement of the water making subsystem, simultaneously also considers the refrigeration requirement, eliminates the problems of complex system, numerous devices, high auxiliary energy consumption and large volume and weight caused by independent operation of each air extractor and each refrigerating unit, and realizes the simplification of the whole composition of the power conversion device and the improvement of the operation efficiency.

Inventors

YANG XIAOHU
CAO GUANGMING
Wu Muyun
Xu Guangzhan
CHEN LIE
SONG PING
MA CAN
WANG WEI
ZHAO ZHENXING
DAI LU
HE TAO
KE ZHIWU
ZHANG ZHI
LIU YONGCHAO

Assignees

中国船舶集团有限公司第七一九研究所

Dates

Publication Date: 20260505
Application Date: 20260228

Claims (10)

1. A water making air extraction system, comprising: the water making subsystem is used for converting fresh water or seawater into purified water; A refrigeration subsystem for converting saturated steam to water vapor; The absorber is connected with the refrigeration subsystem to form a circulation loop, a first inlet of the absorber is connected with an exhaust pipe, the exhaust pipe is connected with an outlet of the water making subsystem, the exhaust pipe is used for sucking air and water vapor in the water making subsystem into the absorber, a first outlet of the absorber is connected with an exhaust pipe, the exhaust pipe is used for exhausting air, a lithium bromide solution is arranged in the absorber, and the lithium bromide solution is used for absorbing the water vapor.
2. The water-making air extraction system of claim 1, wherein said water-making subsystem comprises: A water producing unit for converting fresh water or seawater into dry steam; The inlet of the first condenser is connected with the water making unit, the outlet of the first condenser is connected with the exhaust pipe, the first condenser is used for converting dry steam into purified water, and air and water vapor in the first condenser are sucked into the absorber through the exhaust pipe.
3. The water-making air extraction system according to claim 2, wherein said water-making unit comprises: A first pump for pumping fresh water or seawater; the first evaporator is connected with an outlet of the first pump and is used for heating fresh water or seawater to generate pure steam; and the inlet of the steam-water separator is connected with the first evaporator, and the outlet of the steam-water separator is connected with the first condenser.
4. The water-making air extraction system according to claim 2, wherein the first condenser is provided with a first cooling pipe in which a first cooling medium flows, the first cooling medium being used for heat exchange with the dry steam to form purified water.
5. The water making and pumping system of claim 1, wherein the refrigeration subsystem comprises: A refrigeration unit for generating water vapor and cooling the surrounding environment, the outlet of the refrigeration unit being in communication with the second inlet of the absorber; And the inlet of the heating unit is communicated with the second outlet of the absorber, the first outlet of the heating unit is communicated with the inlet of the refrigerating unit, and the heating unit is used for heating the lithium bromide solution to generate saturated steam, and the saturated steam enters the refrigerating unit.
6. The water pump-out system of claim 5, wherein the refrigeration unit comprises: A second condenser, an inlet of which is communicated with a first outlet of the heating unit, for condensing the saturated steam to generate condensed water; a first throttle valve in communication with an outlet of the second condenser; A second evaporator, an inlet of which is communicated with the first throttle valve, and an outlet of which is communicated with a second inlet of the absorber; the condensed water enters the second evaporator after passing through the first throttle valve to form water vapor.
7. The water making and pumping system according to claim 6, wherein the heating unit comprises: A first conduit having a first end in communication with the second outlet of the absorber; And the inlet of the steam generator is communicated with the second end of the first pipeline, the first outlet of the steam generator is communicated with the inlet of the second condenser, and the steam generator is used for heating the lithium bromide solution to generate saturated steam.
8. The water-making air extraction system according to claim 7, wherein said heating unit further comprises a second pump disposed in said first conduit for pumping lithium bromide solution within said absorber to said steam generator.
9. The water pump-out system of claim 7, wherein the heating unit further comprises: The two ends of the second pipeline are respectively communicated with the second outlet of the steam generator and the third inlet of the absorber so as to enable lithium bromide solution to flow back into the absorber from the steam generator; The second throttle valve is arranged on the second pipeline.
10. The water-making air extraction system of claim 1, further comprising a third pump disposed in said exhaust duct.

Description

Water-making air-extracting system Technical Field The invention relates to the technical field of nuclear power, in particular to a water making and air extracting system. Background The power conversion device of the nuclear power station is a central link for converting nuclear heat energy into electric energy. The water making system evaporates tap water through heating and condenses the tap water into purified water, so as to provide replenishing water for the power conversion device. In order to ensure continuous and stable operation of the water making system, the condenser needs to be pumped to maintain the necessary vacuum state. For this purpose, power conversion devices are usually equipped with a jet ejector, a water jet ejector, a vacuum pump, or the like for extracting a mixed gas of air and steam. Meanwhile, a large amount of high-temperature equipment is arranged in the power conversion device of the nuclear power station, the ambient temperature is high, and the equipment is required to run safely by means of continuous cooling of a refrigerating unit. At present, the air extraction equipment and the refrigerating unit usually run independently, which causes the problems of complex system structure, redundant equipment, high auxiliary energy consumption, large volume and weight and the like. Disclosure of Invention The invention provides a water making air extraction system which is used for solving the defects of complex system structure, redundant equipment, high auxiliary energy consumption and large volume and weight caused by independent operation of air extraction equipment and a refrigerating unit in the prior art. The invention provides a water making and air extracting system which comprises a water making subsystem, a refrigerating subsystem and an absorber, wherein the water making subsystem is used for converting fresh water or seawater into purified water, the refrigerating subsystem is used for converting saturated steam into water steam, the absorber is connected with the refrigerating subsystem to form a circulation loop, a first inlet of the absorber is connected with an air extracting pipe, the air extracting pipe is connected with an outlet of the water making subsystem, the air extracting pipe is used for extracting air and water steam in the water making subsystem into the absorber, a first outlet of the absorber is connected with an exhaust pipe, the exhaust pipe is used for exhausting air, a lithium bromide solution is arranged in the absorber, and the lithium bromide solution is used for absorbing the water steam. The water making and pumping system comprises a water making unit and a first condenser, wherein the water making unit is used for converting fresh water or seawater into dry steam, an inlet of the first condenser is connected with the water making unit, an outlet of the first condenser is connected with the pumping pipe, the first condenser is used for converting the dry steam into purified water, and air and water steam in the first condenser are pumped into the absorber through the pumping pipe. The water making and pumping system comprises a first pump, a first evaporator and a steam-water separator, wherein the first pump is used for pumping fresh water or seawater, the first evaporator is connected with an outlet of the first pump and is used for heating the fresh water or the seawater to generate pure steam, an inlet of the steam-water separator is connected with the first evaporator, and an outlet of the steam-water separator is connected with the first condenser. According to the water making air extraction system provided by the invention, the first condenser is provided with the first cooling pipe, the first cooling medium flows in the first cooling pipe, and the first cooling medium is used for carrying out heat exchange with the dry steam so as to form purified water. The refrigeration subsystem comprises a refrigeration unit and a heating unit, wherein the refrigeration unit is used for generating water vapor and cooling the surrounding environment, an outlet of the refrigeration unit is communicated with a second inlet of the absorber, an inlet of the heating unit is communicated with a second outlet of the absorber, a first outlet of the heating unit is communicated with an inlet of the refrigeration unit, the heating unit is used for heating lithium bromide solution to generate saturated vapor, and the saturated vapor enters the refrigeration unit. The water making and air sucking system comprises a second condenser, a first throttle valve, a second evaporator and an absorber, wherein an inlet of the second condenser is communicated with a first outlet of the heating unit, the second condenser is used for condensing saturated steam to generate condensed water, the first throttle valve is communicated with an outlet of the second condenser, an inlet of the second evaporator is communicated with the first throttle valve, an outlet of the seco