Internal steam conduction apparatus of direct air cooling branch-shaped exhaustion duct system

A steam exhaust pipe and internal diversion technology, applied in steam/steam condensers, sustainable manufacturing/processing, climate sustainability, etc., can solve the problem of unfavorable safe and economical operation of direct air-cooled condensers, and cannot solve the problem of steam flow. Even distribution problems, etc., to prevent excessive pressure loss, ensure safe operation, and reduce thermal efficiency

Inactive Publication Date: 2009-07-08
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

The steam flow area equalization method adopted by the diversion device of this invention cannot solve the problem of uniform distribution of steam flow, which will have adverse effects on the safe and economical operation of the direct air-cooled condenser

Method used

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  • Internal steam conduction apparatus of direct air cooling branch-shaped exhaustion duct system
  • Internal steam conduction apparatus of direct air cooling branch-shaped exhaustion duct system
  • Internal steam conduction apparatus of direct air cooling branch-shaped exhaustion duct system

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Embodiment Construction

[0028] The present invention will be further described in conjunction with the accompanying drawings.

[0029] figure 1 and figure 2 The cross-sections of the short blade and the long blade of the guide device in the direct air-cooled dendritic exhaust pipe system, respectively. The main exhaust pipe is divided into two branch exhaust pipes, and each branch exhaust pipe is branched into two branch exhaust pipes, which are called exhaust distribution pipes. The flow distribution is realized by direct air-cooling the diversion device in the branch exhaust pipe.

[0030] The internal guide device of the direct air-cooled dendritic exhaust pipe system includes a tee 1 and guide vanes 2 .

[0031] Such as image 3 As shown, the inlet surface and outlet surface of the tee 1 are perpendicular to the steam flow direction, and the steam flow direction is the positive direction of the z-axis. The contour line of the inlet surface of tee 1 is a circle. Assume that the inner diamet...

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Abstract

The invention discloses a flow guide device in a direct air cooling branch-shaped exhaust duct system, which is applied in the field of heat energy power engineering. The device solves the problem of even flow distribution of steam exhaust of a steam turbine among various steam distribution pipes. The device prevents the danger of the freezing of a direct air cooled condenser which is possibly caused by the unreasonable design of the direct air cooling branch-shaped exhaust duct system, and ensures safe operation of the steam turbine in winter. The device ensures that a system prevents the pressure loss of water vapor from being overhigh and the supercooling area from being overlarge, prevents the reduction of heat exchange amount, and reduces the thermal efficiency of power plants when realizing the even distribution of the flow of water vapor. The device fully plays the cooling capacity of various parts of the direct air cooled condenser, and ensures that the steam turbine runs economically in other seasons. For realizing the even distribution of the flow of the water vapor, the distribution of the area of a diversion cross-section depends on the resistances of two branch pipe sections, and a branch pipe with a high resistance should obtain larger diversion area. The device is mainly used for steam diversion and cooling systems of power stations, petrochemical industry, and the like.

Description

technical field [0001] The invention is an internal flow guiding device of a direct air-cooled branched steam exhaust pipeline system, which is applied in the fields of thermal energy engineering and thermal energy power engineering. Background technique [0002] Air-cooling is the main cooling method for thermal power plants in areas "rich in coal and short of water". It has changed the passive situation of "using water to determine electricity", and is of great significance in today's increasingly tense water resources. The electric power industry is a large consumer of resources. With the lack of water resources, improving the production and use efficiency of electric power and reducing consumption, especially saving and reducing the consumption of water resources and oil resources, is of great significance to the conservation and optimal allocation of China's important strategic resources. . According to China's "Eleventh Five-Year" power development plan, China's power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B9/00
CPCY02P80/15
Inventor 石磊王锦吴萱
Owner BEIJING JIAOTONG UNIV
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