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Finned-tube bundle freezing prevention device for direct air-cooling unit of power station

An anti-freezing device and fin technology, applied in steam/steam condensers, lighting and heating equipment, etc., can solve the problems of increasing the fan outlet resistance, easy freezing, and not aiming at improving the distribution of cold air flow in the air-cooling unit, so as to achieve flexible use. Effect

Inactive Publication Date: 2012-12-19
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, there is no relevant research content aimed at improving the distribution of cold air flow inside the air-cooling unit, increasing the outlet resistance of the fan, and improving the problem of easy freezing of the middle and lower parts of the tube bundle in winter

Method used

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  • Finned-tube bundle freezing prevention device for direct air-cooling unit of power station
  • Finned-tube bundle freezing prevention device for direct air-cooling unit of power station
  • Finned-tube bundle freezing prevention device for direct air-cooling unit of power station

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Embodiment Construction

[0016] From figure 1 It can be seen from the figure that a direct air-cooled island finned tube bundle antifreeze device for a power station includes a "Λ" type finned tube bundle 1 and an axial flow cooling fan 6, etc. The axial flow cooling fan 6 and its drive motor are installed through the fan bridge 8 Right below the "Λ" finned tube bundle 1. In the air-cooling unit, the steam horizontal distribution pipe and the "Λ" finned tube bundle 1, and the "Λ" finned tube bundle 1 and the condensed water collection pipe are connected by welding to ensure airtightness requirements, and the surface is rust-proof deal with. The "Λ"-shaped finned tube bundle 1 below each steam horizontal distribution pipe is provided with a support beam laterally. The foregoing belongs to the prior art and will not be described in detail.

[0017] The present invention is characterized in that: a conical support 4 is provided on the fan bridge 8 below the "Λ" shaped finned tube bundle 1, and a nylon...

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Abstract

The invention relates to a finned-tube bundle freezing prevention device for a direct air-cooling unit of a power station. The freezing prevention device comprises an inverted-V-shaped finned-tube bundle and an axial flow cooling fan, wherein the axial flow cooling fan is arranged just below the inverted-V-shaped finned-tube bundle through a fan bridge frame, the fan bridge frame below the inverted-V-shaped finned-tube bundle is provided with a conical support, a nylon net is sleeved on the outer side of the conical support and comprises an upper layer nylon net, a middle layer nylon net and a lower layer nylon net, and the porosities of the upper layer nylon net, the middle layer nylon net and the lower layer nylon net are reduced gradually. The finned-tube bundle freezing prevention device provided by the invention is reasonable in construction, firm in connection and easy to disassemble and assemble, can effectively improve the distribution of cold air in the air cooling unit, fulfills the purpose that the headwind speed of the finned-tube bundle is gradually reduced from top to bottom, does not completely hinder inlet air at a fan, and can effectively alleviate the situation that the middle and lower parts of the tube bundle are easy to freeze in winter and improve the security and economy of the operation of the unit.

Description

technical field [0001] The invention belongs to the technical field of energy and power, and in particular relates to an antifreezing device for finned tube bundles of a direct air cooling unit of a power station. Background technique [0002] In the north of my country, the area where the pit mouth power plant is located is seriously short of water resources, especially in the dry season, it is even more difficult to bear the large water consumption, which affects the question of whether the power plant can be built. Direct air-cooling technology, due to its outstanding water-saving features, can well solve the bottleneck problem of water resources. The direct air-cooling island used in this technology includes dozens of air-cooling fans arranged in rows, and uses ambient air to cool the direct air-cooling condenser. Forced convection heat transfer. The smallest unit of the direct air-cooled condenser is the air-cooled condenser unit (abbreviated as the air-cooled unit). D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B9/00
Inventor 张兆营杨建国吴少华李振中
Owner HARBIN INST OF TECH AT WEIHAI
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