PERIODIC VACUUM DEAERATOR FOR HEATING AND HOT WATER SUPPLY SYSTEMS Russian patent published in 2024 - IPC B01D19/00 C02F1/20 

FIELD: thermal power engineering.

SUBSTANCE: invention can be used to remove gases from feed water of heating and hot water supply systems. A periodic vacuum deaerator for heating and hot water supply system includes a control system, a deaeration chamber 1 with a lower-level sensor 15 and a sensor 6 for starting deaeration, a nozzle 2 for spraying source water, a water supply valve 3 to nozzle 2, a gas release valve 4, an outlet pipe 7, connected to pump 8. In the upper part of the deaeration chamber 1, an upper-level sensor 5 is additionally installed, and below it there is a sensor 27 for reducing the displacement rate. A backup pump 9 is additionally mounted parallel to pump 8. In front of each pump 8 and 9, inlet check valves 10 and 11 are mounted, and behind the pumps there are outlet check valves 12 and 13, the outputs of which are connected to the input of the water flow sensor 14, the output of which is connected to the prepared water supply line to the consumer. A water intake pipe 19 is mounted behind the water flow sensor 14, connecting the prepared water supply line to the consumer with the outlet pipe 7 of the deaeration chamber 1, on which a valve 18 for reducing the rate of displacement of the vapor-gas mixture and a valve 16 for displacing the vapor-gas mixture are located in series along the direction of water movement, and parallel to the valve 18 reducing the rate of displacement of the vapor-gas mixture, valve 17 is installed to limit the rate of displacement of the vapor-gas mixture. At the outlet pipe 7 of the deaeration chamber 1, a two-chamber heat exchanger 20 is additionally installed, including a chamber 21 for deaerated water, the inlet of which is connected to the outlet pipe 7 of the deaeration chamber 1, and the outlet is connected to the inlet check valves 10 and 11 of pumps 8 and 9 and the source water chamber 22, the input of which is connected to the source water main, and the output is connected to valve 3 for supplying water to nozzle 2.

EFFECT: increase of reliability of the device, improvement of quality of deaerated water, increase of productivity of the deaerator, reduction of dimensions and metal consumption, and expansion of functionality.

4 cl, 1 dwg