Heat exchange base tube for direct air-cooling condenser

A technology of air-cooled condenser and base pipe, which is applied in the direction of tubular elements, heat exchange equipment, lighting and heating equipment, etc., which can solve the problems of high power consumption of fans and failure to meet the requirements of users for energy saving

Inactive Publication Date: 2012-07-25
SHUANGLIANG ECO ENERGY SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the direct air-cooled condenser using single-row finned tubes consumes a lo

Method used

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  • Heat exchange base tube for direct air-cooling condenser
  • Heat exchange base tube for direct air-cooling condenser
  • Heat exchange base tube for direct air-cooling condenser

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Such as figure 2 as shown, figure 2 It is a cross-sectional schematic diagram of embodiment 1 of the present invention. Depend on figure 2 It can be seen that, in the heat exchange base pipe of the direct air-cooled condenser of the present invention, the cross section of the heat exchange base pipe 1 is slender, the two ends of the cross section are arc-shaped or approximately arc-shaped, and the sides are planes. The cross-sectional shape of the base pipe 1 is wedge-shaped, and its width dimension changes from large to small along the air flow direction, and the front end width dimension of the cross section facing the air flow is larger than the rear end width dimension. The heat exchange base pipe 1 is formed by a steel-aluminum composite material coated with aluminum on one side or a steel plate coated on one side with high frequency welding, and the welding seam C is at the end.

[0020] In embodiment 1, the length dimension of the cross section of the heat ...

Embodiment 2

[0023] image 3 It is a cross-sectional schematic diagram of embodiment 2 of the present invention. Depend on image 3 It can be seen that the heat exchange base pipe of a direct air-cooled condenser in the present invention has a wedge-shaped cross-sectional shape, and the position of the weld C is on the side; the size of the heat exchange base pipe 1 is similar to that of Example 1. The difference between Embodiment 2 and Embodiment 1 is mainly that the positions of the weld seams are different.

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Abstract

The invention relates to a heat exchange base tube for a direct air-cooling condenser, which is applied to the exhaust-steam condensation field of turbines of thermal power plants, steam turbines in chemical and air separation industries and the like. The cross section of the heat exchange base tube (1) is shaped like a wedge and the size of the heat exchange base tube (1) is decreased along the flow direction of air. The heat exchange base tube for the direct air-cooling condenser is shaped like a wedge, the volume of hot air subjected to the air expansion is contained and the flow velocity of the air remains unchanged when the air flows through the heat exchange base tube, so that the resistance at the air side of the heat exchange base tube for the condenser can be decreased to achieve the purpose of reducing the energy consumption of a fan. When the heat exchange base tube for the direct air-cooling condenser is applied to direct air-cooling condensers of large-scale thermal power plants, the advantage of low resistance is more prominent.

Description

technical field [0001] The invention relates to a heat exchange base pipe of a direct air-cooled condenser. It is used in steam turbines in thermal power plants, steam turbines in chemical industry and air separation industry and other waste steam condensation fields. Background technique [0002] The steam turbine and exhaust steam discharged from the steam turbine need to be condensed into water and sent to the boiler for recycling. In order to save water resources, direct air-cooled condensers for exhaust steam condensation are widely used at home and abroad. The heat exchange elements used in direct air-cooled condensers are finned tubes that enhance heat exchange outside the tubes. Although there are many forms, the most widely used finned tubes are called single-row tubes. The single-row tube is composed of a base tube and fins. The cross-sectional shape of the base tube is a rectangular flat tube, and its two ends are arc-shaped; the cross-section of the fin is also...

Claims

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Application Information

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IPC IPC(8): F28F1/00
Inventor 薛海君张健
Owner SHUANGLIANG ECO ENERGY SYST CO LTD
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