Narrow-band concurrent steam condenser tube bundle with dual-trapezoid air cooling region

A technology of air-cooling area and condenser, which is applied in the direction of steam/steam condenser, lighting and heating equipment, etc. It can solve the problem of increasing the steam resistance of steam flowing through the main condensation area, taking away uncondensed gas, and raising the condenser Pressure and other problems, to achieve the effect of obvious cooling effect, small degree of supercooling, and high pressure
CN104266501AActive Publication Date: 2015-01-07SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIVERSITY OF ELECTRIC POWER
Publication Date
2015-01-07

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Abstract

The invention relates to a narrow-band concurrent steam condenser tube bundle with a dual-trapezoid air cooling region. The tube bundle comprises two main condensing regions and the air cooling region between the two narrow-band concurrent main condensing regions, wherein all the main condensing regions and the air cooling region are formed by arranging cooling water tubes in a staggering manner; the outer edges of the main condensing regions are provided with a plurality of reducing steam guide passages which tilt upwards, and the inner edges of the main condensing regions are provided with a plurality of uncondensed gas collection passages which tilt downwards; the steam guide passages and the uncondensed gas collection passages are arranged in the staggering manner to partition the main condensing regions into turned narrow-band ribbons; the air cooling region is integrally elongated and consists of an upper trapezoid and a lower trapezoid; steam uniformly and concurrently flows into the main condensing regions for condensation through the guide passages, and the remaining uncondensed gas flows into the elongated air cooling region for further cooling through the uncondensed gas collection passages. Compared with the prior art, the tube bundle has the advantages of small steam resistance, full condensation, high air concentration at an outlet and capability of exhausting uncondensed gas by using exhaust equipment under low exhaust pressure without increasing the pressure of a steam condenser.
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Description

technical field

[0001] The invention relates to a condenser tube bundle, in particular to a narrow-band downstream condenser tube bundle with double trapezoidal air-cooling zones. Background technique

[0002] The function of the large-scale power station condenser is to condense the exhaust steam discharged from the steam turbine into water and establish and maintain a certain vacuum value at the steam exhaust port of the steam turbine. The heat transfer performance of the condenser in a large power station has a great influence on the energy consumption of the unit, and the rationality of the cooling tube bundle arrangement of the condenser has an important influence on the heat transfer performance of the condenser.

[0003] At present, there are many types of condenser tube bundles in power stations, typical ones are: church window tube bundle, gable tube bundle, centripetal tube bundle, AT tube bundle, vertical balanced flow tube bundle, general cap tube bundle, radial ...

Claims

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