Method and cogeneration installation in heat generating plants, preferably equipped with water-tube boilers

摘要

The method according to the invention characterized in that while maintaining thermal power of the water-tube boiler (1), water stream is decreased in relation to the nominal stream thus water heating increases and then heated water is throttled in the valve (16) to the saturation temperature - the temperature of formation, generating saturated steam, whereby the saturated steam after being overheated in the diaphragm heat exchanger (19), at the boiler flue gas exhaust pass (1), to the temperature above the saturation temperature, feeds steam condensing turbine (20) and a wet steam exiting the turbine (20) after condensation in condenser fed (22) by the return water from the external circuit of distribution (11) and then cooled in the air heaters (24), is then returned by pipeline (12) to external circuit of distribution (11). Cogeneration installation in heat plants, especially those equipped with water-pipe boilers, in which in the water pipeline behind the boiler on the inlet to the steam and water separator vessel an expansion valve is installed, and the steam and water separator is connected in the lower part with the water drainage pipeline and in the upper part with a saturated steam pipeline, while the steam pipeline connects a series: the diaphragm steam superheater placed in the course of exhaust pass from the boiler, the steam condensing turbine and the condenser, according to the invention is characterized in that has a diaphragm condenser (22) (22-1) connected condensate pipeline (25) to the pump (23) via an air heater (24) and to an intermediate water tank (13) from which the condensate drainage pipeline (12) with a pump (14) connects with the return water pipe from the external circuit of distribution (11), the diaphragm condenser (22-1) is equipped with a cooling circuit consisting of a control valve (9) and a pipeline (10) connected by a flow diaphragm condenser (22-1) with a return water distribution pipe (8).