RU2269733C2 - Cooling tower of thermal power station - Google Patents

Abstract

FIELD: thermal power stations.

SUBSTANCE: proposed cooling tower has casing with air-intake holes that accommodates water dispensing devices connected to pipeline carrying water heated in condenser; it also has cooled water accumulating pond disposed under casing that communicates via pipeline with turbine condenser. Cooling tower is provided with air outlet holes and its casing is mounted horizontally and made in the form of parallelepiped or semi-cylinder; air intake holes are disposed on one end of casing and air outlet ones, on its other end; air outlet holes communicate through air duct with suction pipe of boiler air fan; air movement within cooling tower is ensured due to vacuum built up by boiler air fan.

EFFECT: reduced capital outlays, enhanced economic efficiency of thermal power station.

1 cl, 1 dwg

Description

The invention relates to the field of power engineering and can be used in thermal power plants.

Known analogues are cooling towers of a thermal power plant, which contain a body with air intake and air outlet openings made in the form of a two-sheeted hyperboloid or a truncated cone, inside of which there are devices for distributing water connected to a pipeline of water heated in a condenser: spray nozzles and shields of a film heat exchanger. Under the tower body there is a pool for collecting water, connected by a pipeline to a turbine condenser (see Ryzhkin V.Ya. "Thermal power plants. A textbook for universities on a specialty" Thermal power plants. "2nd ed. M .: Energia, 1976, fig. 18-11 and description to it on pages 298-301). The described analogue is adopted as a prototype.

The disadvantages of analogues and prototype are reduced efficiency due to the large dimensions of the exhaust tower of the hull, necessary to create natural traction, and therefore, large capital costs and complexity of the structure. Lowered heat also results from increased heat loss from the tower to the environment.

The technical result achieved by the present invention is to increase the efficiency of the cooling tower of a thermal power plant by reducing heat loss to the environment, reducing capital costs and significantly simplifying the design.

To achieve this result, a cooling tower of a thermal power plant is proposed, which contains a housing with air intake openings, in which water distribution devices are connected, connected to a pipeline of heated water in a condenser, a pool for collecting chilled water located under the housing and connected by a pipeline to the turbine condenser.

The difference of the claimed cooling tower is that it is equipped with air vents, and the tower body is horizontal and made in the form of a parallelepiped or half cylinder, with air inlets located on one side of the housing and air vents on the other, while the air vents are connected to the suction duct the nozzle of the blower fan of the boiler, and the movement of air in the tower is ensured by the vacuum created by the blower fan of the boiler.

The cooling tower can significantly increase the efficiency of its use by reducing heat loss to the environment, as well as reduce capital costs and simplify the design.

The drawing shows a diagram of a thermal power plant with the proposed cooling tower.

The thermal power plant contains a steam turbine 2 connected by a steam line to the steam boiler 1. The cooling tower contains a housing 4 with air intake 8 and air exhaust 10 openings, in which are placed the water distribution devices 5 connected to the pipeline of the steam turbine 2 condenser 3 and the film heat exchanger shields 6. Under the cooling tower housing there is a chilled water collecting basin 7 connected by a pipeline to a condenser 3 of a turbine 2. A circulation pump 11 is included in the chilled water pipeline. ozduhootvodyaschie duct opening 10 connected to a suction pipe 9 of the boiler blow fan 1.

The cooling tower of a thermal power plant operates as follows.

The superheated steam flows from the boiler 1 to the turbine 2. After completing work in the turbine, the exhaust steam enters the condenser 3 of the steam turbine 2, where it is condensed by cooling with circulating water. Heated circulating water enters the cooling tower 4, is sprayed in the switchgear 5 and flows down the working surface of the heat exchangers 6, falling into the pool for collecting chilled water 7. The air drawn from the atmosphere through the air inlet openings is drawn through the heat exchangers 8. Air movement is ensured by rarefaction, which creates a blower fan 9 connected to the vents 10 of the tower. Heated air is supplied to the boiler furnace. Chilled water from the pool 7 is supplied by the pump 11 to the condenser 3 for subsequent heating.

Thus, the proposed cooling tower of a thermal power plant allows to increase the efficiency of its use by reducing heat loss to the environment, lower capital costs and a significant simplification of the design.

Claims (1)

Cooling tower of a thermal power plant, comprising a housing with air inlet openings, in which water distribution devices are placed, connected to a pipeline of heated water in a condenser, a chilled water collection basin located under the housing and connected by a pipeline to a turbine condenser, characterized in that it is provided with air exhaust openings and the tower body is located horizontally and is made in the form of a parallelepiped or a half-cylinder, and the air intake holes are located on one side casing, and air vents on the other, while the air vents are connected by an air duct to the suction pipe of the boiler blower fan, and the air movement in the tower is ensured by the vacuum created by the boiler blower fan.