Turbine condenser

Abstract

A condenser of a steam turbine unit, including a shell, which has a front water chamber, a heat exchange chamber and a rear water chamber. The heat exchange chamber is divided into an upper condensation zone and a lower cooling zone in the vertical direction. The condensation zone and the cooling The area is connected by a drainage channel, and the cooling area is provided with a drainage outlet, and a drainage channel is formed in the cooling area between the drainage channel and the drainage outlet, and a plurality of baffle grids are arranged at intervals along the drainage channel in the cooling area. The plates are divided into multiple groups according to the corresponding matching relationship of the baffle direction. Each baffle grid in each group is arranged with a plurality of baffle bars parallel to each other. The folded bars on each baffle grid in each group are The flow strips interweave on the projection plane to form a grid hole with a quadrilateral structure that matches the outer diameter of the cooling heat exchange tubes. There are also several cooling heat exchange tubes in the cooling area, and these heat exchange tubes axially pass through each set of baffle grids Each group of baffle grid plates is clamped and fixed by the baffle strips forming grid holes on the projection plane. It integrates the functions of condensation and cooling.

Description

technical field [0001] The invention relates to a condenser of a steam turbine unit. Background technique [0002] Steam is the working medium of the steam turbine. In the steam cycle process of the steam turbine unit, the steam discharged from the steam turbine needs to be condensed into water, cooled to the required temperature, and then refined. It can be seen that the steam cycle process of the steam turbine unit includes condensation, cooling, finishing and other processes. [0003] As an important component of the steam turbine unit, the condenser is used to condense the exhaust steam of the steam turbine into water by heat exchange. The existing condenser only has the function of condensing the exhaust steam of the steam turbine into water, and does not have the function of cooling the condensed water, which makes the condensed water discharged through the condenser unable to be directly discharged into the hydrophobic refinery because the temperature does not meet t...

AI Technical Summary

Problems solved by technology

This is especially common with high back pressure steam turbine units. Specifically, in order to realize energy saving and consumption reduction of power plants and increase economic benefits, high back pressure steam turbine units usually use the condenser as the return water heating of the heat network, that is, through the condenser to The steam exhausted by the steam turbine is used to heat the hot water in the heating network to a predetermined temperature, so as to realize the technical purpose of reusing the waste heat of the steam exhausted by the steam turbine; there is no doubt that this will cause the condensed water condensed by the condenser The temperature is relatively high (usually above 70-80°C), which cannot meet the technical requirements of the hydrophobic finishing system (usually below 55°C), so it is necessary to install a hydrophobic cooler between the condenser and the hydrophobic finishing system. So that the condensed water can be cooled and cooled according to the technical requirements before entering the hydrophobic finishing system

[0004] This technology of cooling the condensed water in the condenser by means of the intermediate hydrophobic cooler can make the cooled hydrophobic effectively meet the technical requirements of the hydrophobic fine treatment system, but it will be reduced due to the increase in equipment. Affects the spatial layout of the steam turbine unit, resulting in a large investment in site and equipment, resulting in high operating costs and insufficient economic efficiency of the steam turbine unit

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