AUTOMATIC HEAT-SUPPLY STATION Russian patent published in 2004 - IPC

FIELD: heat and power engineering, namely closed heat supply systems with subordinate circuit for connecting heating system.

SUBSTANCE: automatic heat supply station of heating system includes supply pipeline of heat power network in which flow rate controller is used; supply pipeline of heating system connected with return pipeline of heating system by means of bridge having successively connected mixing pump and mixing regulator; water heater of hot water supply system connected between supply and return pipelines of heat power network. Control inlet of mixing regulator is connected with outlet of heating regulator whose inlets are connected with pickups for measuring temperature of heating system and environment. Three-way Valve is used as mixing regulator. Inlet of said valve is connected with outlet of mixing pump, its first outlet is connected with supply pipeline of heating system, its second outlet is connected with return pipeline of heat power network. Control inlet of flow rate controller is connected through pressure drop pickup respectively with supply and return pipelines of heating system. Automatic heat supply station of heating system also includes supply pipeline of heat power network with flow rate controller mounted in said pipeline, supply pipeline of heating system provided with elevator, mixing pump. Adding inlet of elevator is connected with return pipeline of heating system through first non-return valve and with return pipeline of heat power network through second non-return valve in direction opposite relative to direction of connecting first non-return valve. Mixing pump through filter is connected with return pipeline and through three-way valve used as mixing regulator it is connected with outlets of first and second non-return valves respectively by first and second outlets of three-way valve. Control inlet of three-way valve is connected with outlet of heating regulator whose inlets are connected with temperature pickups. Control inlet of flow rate controller is connected with outlet of pressure drop pickup in supply and return pipelines of heating system. Method of automatic control of parameters of heating system comprises steps of measuring fluctuation of above mentioned parameters relative to preset values; adding water from return pipeline to supply pipeline by means of mixing pump through filter successively connected with mixing pump. At least two mixing pumps with filters are used. Mixing pumps are alternatively stopped for washing out filter connected successively with non-operating pump by creating countercurrent flow of water with use of operating pump through non-operating pump.

EFFECT: enhanced efficiency of station in condition of insufficient water pressure at inlet of heat power network and deficient heat supply, improved operational capability and reliability of station.

6 cl, 6 dwg