TH19645B - For preheating water, supply for steam turbines. And methods for controlling the preheating - Google Patents

Abstract

DC60 (19/02/45) This invention involves a unit-integrated structure between the ready-made boilers. With combustion chamber and steam turbine The steam is then taken from the boiler (10), moving along the link. Next to a steam turbine (11) for rotating a generator (G) to produce electricity. Water flowing supply Circulated through the boiler (10), it is evaporated in the evaporator (190), which is positioned in the boiler (10) and is superheated in the superheated water device (120). The supply is directed to the boiler through an energy-saving device (20), which acts as an exchange device. Change in heat Where heat is transferred from the boiler flue gas to the water, the energy-efficient equipment supply (20) is provided with at least two parts, which are comprised of the energy-saving equipment section. At least two parts one (20a1) and section At least one second (20a2) of the second energy saving device. Pre-heated supply water. With the steam released of the steam turbine The boiler (10) continues from the energy saving device (20) to the evaporator and superheating equipment. And will flow through these devices That in the form of steam To the steam turbine connector (19), which leads to the energy-saving equipment section (20a1, 20a2), comprising the branching point (D1) to the indirect connector through (21) of the water supply. The energy-efficient devices (20a1) can be indirectly passed by at least a fraction of the Supply water flow The invention also involves a method for preheating water. Steam turbines supply and methods for controlling preheating This invention involves a unit-integrated structure between the ready-made boilers. With combustion chamber and steam turbine The steam is then taken from the boiler (10), moving along the link. Next to a steam turbine (11) for rotating a generator (G) to produce electricity. Water flowing supply Circulated through the boiler (10), it is evaporated in the evaporator (190), which is positioned in the boiler (10) and is superheated in the superheated water device (120). The supply is directed to the boiler through an energy-saving device (20), which acts as an exchange device. Change in heat Where the heat It is transferred from the flue gas of the boiler to the water, the energy-saving equipment supply (20) is provided with at least two parts, comprising at least one energy-saving part. Two parts (20a1) and section At least one second (20a2) of the second energy saving device. Pre-heated supply water. With the steam released of the steam turbine The boiler (10) continues from the energy saving device (20) to the evaporator and superheating equipment. And will flow through these devices That in the form of steam To the steam turbine connector (19), which leads to the energy-saving equipment section (20a1, 20a2), comprising the branching point (D1) to the indirect connector through (21) of the water supply. The energy-efficient devices (20a1) can be indirectly passed by at least a fraction of the Supply water flow The invention also involves a method for preheating water. Steam turbines supply and methods for controlling preheating

Claims (5)

1.Unit-integrated structure between boilers And a steam turbine provided with Combustion chamber, which consists of: a connector built and arranged to carry the steam from the boiler (10) to the steam turbine (11) for turning the generator (G) to generate electricity. An evaporator (190), where evaporation is located in the boiler (10), the evaporator (190) is built and positioned to evaporate the source water that has been circulated through the boiler ( 10) and is superheated in superheating devices (120), energy-efficient devices (20), which act as heat exchangers, where heat It is transferred from the flue gas of the boiler to the supply water, and the supply water is introduced. To the boiler via energy-saving devices (20), where energy-saving devices (20) are provided with at least two parts, which include at least one energy-saving part. (20a1) and at least one second power saver segment (20a2) connected in series. Where the supply water is pre-heated with the steam released by the turbine, the steam is further brought to the boiler (10) to the evaporator (190) and the superheater (120), and It flows through them in the form of steam to the steam turbine (11), which is characterized by Another connector (19) leads to an energy-efficient device section (20a1m 20a2), which consists of a first branch (D1) to an indirect connector through (21) of the supply water so that That at least one part of the energy-saving device (20a1) will be able to pass through, at least, with respect to the water flow segment, the supply, and where the indirect connector through (21) will be welded. Connect to the preheating device (14) of the supply water. And from the preheating device (14), the connector (21 \ ') leads through the second branch (D2) to another connector (19) between the energy saver section (20a1 and 20a2) and The steam released is directed to the preheating device (14) of the water supply from the steam shield (11). 2. The unified structure according to claim 1, where the first branch (D1) intersection is composed of a distribution flap (22) where the water flow from the supply can be regulated by the valve. It is between the energy saver section (20a1) and the short-pass connector (21). 3. The unified structure according to claim 1, where the branch connector (13a1.1) leading to the preheating water supply device (14) is assembled with a second valve (23) for Controlling the amount of steam released to the preheating device (14) 4.Methods for preheating water, supply for steam turbines and methods for controlling preheating, which include the steps of: bringing the supply to the energy-saving apparatus (20) of the boiler ( 10) prepared With a combustion chamber (K), where heat is transferred in the heat exchanger from Gas releases fumes to the water supply, the installation of energy-saving equipment (20), to make it positioned by the heat-facing function. At least part of it is in the flue gas pipe (10a) of the boiler (10), where the device is economical. At least two total energy (20a1,20a2) that have been used for water purification. Hot supply The sections are connected in series, heating the combustion air is assisted by the energy produced by the steam released, and control the amount of indirect flow through the water supply of the energy-saving equipment (20). With the first flap (22), in addition to the indirect passing control of the amount of steam that is released It is then flowed to the pre-heater (14) in the indirect flow connector (21) with the second flap (23), and provided to the connector (21 \ ') from the heater. The preheat (14) has been connected through a branch point (D2) so that it is in the path (19) between the energy saver segment (20a1 20a2). 5. Methods according to claim 4, in which the first (22) and / or second (23) valves are regulated on the basis of measuring the temperature of the flue gas and / or of the source water. Pay that makes the flow Through energy-saving devices (20)