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CN200979378Y - 直接空冷凝汽器曲面风墙 - Google Patents

直接空冷凝汽器曲面风墙 Download PDF

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Publication number
CN200979378Y
CN200979378Y CN 200520127540 CN200520127540U CN200979378Y CN 200979378 Y CN200979378 Y CN 200979378Y CN 200520127540 CN200520127540 CN 200520127540 CN 200520127540 U CN200520127540 U CN 200520127540U CN 200979378 Y CN200979378 Y CN 200979378Y
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赵弦
王明仁
关晓春
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Abstract

一种能提高风机入口风量和降低热回流的电站汽轮机用直接空冷凝汽器曲面风墙。它由平面和曲面的内外墙组成，通过内外墙分叉结构，调整空冷凝汽器周围空气动力场，将冷风导入空冷凝汽器风机入口，同时降低出口热风向风机入口的回流。

Description

直接空冷凝汽器曲面风墙
所属技术领域
本实用新型涉及一种在电站汽轮机直接空冷凝汽器平台上基本换热单元阵列周围布置于平台平面上下两侧的风墙，它用于调整空冷凝汽器周围空气动力场，使之对空冷凝汽器运行在各种风环境下均有更好性能。
背景技术
目前，公知的电站汽轮机直接空冷凝汽器平台上基本换热单元阵列周围垂直于平台平面布置的平面形风墙(以下称垂直平面挡风墙)，原设计此风墙的目的是为阻挡机组运行时横风对凝汽器的不良影响。但是，经分析和试验表明，无论是有风还是无风情况下，垂直平面风墙仅能部分改善横风对换热器空气出口影响，不能阻挡在阵列边缘布置的基本换热单元出口热风向入口的回流，从而使空冷凝汽器的效率和能力大为减少。
发明内容
为了克服现有的电站汽轮机直接空冷凝汽器平台上基本换热单元阵列周围布置的垂直平面挡风墙不能阻止阵列边缘布置的基本换热单元出口热风向入口回流的不足，本实用新型提供一种风墙，该风墙不仅能阻挡横风对换热器空气出口的不利影响，还能阻挡在阵列边缘布置的基本换热单元出口热风向入口的回流，使空冷凝汽器的换热能力增加。
本实用新型解决其技术问题所采用的技术方案是：通过空冷凝汽器周围物体环境、运行中可能出现的风向和风力的缩小模型试验和计算空气动力学计算机模拟的结果改变原垂直平面挡风墙的结构、表面形状和安装位置，形成一种以曲面导风内墙和曲面导风外墙相组合的直接空冷凝汽器曲面风墙，曲面导风内墙和曲面导风外墙成分叉结构，使它在任何风向和风速情况下，都有利于将冷风导入空冷凝汽器风机入口，而将出口热风向风机入口的热回流通过风墙的阻挡和引导降到最低。
本实用新型的有益效果是可以阻挡横风对换热管束出口的直接影响的同时，还引导冷空气方便的进入风机入口，并可有效的防止管束出口热空气向风机入口回流。
附图说明
下面结合附图和实施例对本实用新型进一步说明。
图1是本实用新型的一个基本换热单元长度曲面导风墙的三维结构示意图。
图2是风墙转角部分一种形状的示意图。
图中1.曲面导风外墙，2.曲面导风内墙，3.蒸汽分配管，4.换热器管束，5.蒸汽和凝结水下联箱，6.风机导风环，7.内侧视图，8.外侧视图。
具体实施方式
在图1中，直接空冷凝汽器曲面风墙由曲面导风内墙(2)和曲面导风外墙(1)组成，其中，曲面导风内墙(2)和曲面导风外墙(1)成分叉结构。曲面导风外墙(1)将与空冷凝汽器换热器管束(4)上缘到风机导风环(6)入口平面之间的水平来风很好的引向风机入口平面，并分流一部分来风到热风出口平面，阻挡热风向风机入口回流。曲面导风内墙(2)在曲面导风外墙(1)靠管束的一侧，它把靠边一行或一列的管束(3)出口热风导向远离风墙的基本换热单元阵列的中央，并随热气流远离空冷凝汽器，防止其回流到风机入口。曲面导风外墙(1)可以包含垂直部分，垂直部分可以采用内倾斜平面或曲面。直接空冷凝汽器曲面风墙可以采用金属、木头、塑料材料。

Claims (3)

1.一种电站汽轮机用直接空冷凝汽器平台上基本换热单元阵列周围布置的直接空冷凝汽器曲面风墙，其特征在于直接空冷凝汽器曲面风墙由曲面导风内墙和曲面导风外墙组成，曲面导风内墙和曲面导风外墙成分叉结构。
2.根据权利要求1所述的直接空冷凝汽器曲面风墙，其特征在于曲面导风外墙可以包含垂直部分，垂直部分可以采用内倾斜平面或曲面。
3.根据权利要求1所述的直接空冷凝汽器曲面风墙，其特征在于直接空冷凝汽器曲面风墙可以采用金属、木头、塑料材料。
CN 200520127540 2005-11-08 2005-11-08 直接空冷凝汽器曲面风墙 Expired - Lifetime CN200979378Y (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110308764A1 (en) * 2009-03-06 2011-12-22 Gea Energietechnik Gmbh Air-cooled condenser system and method for setting up such a condenser plant
CN104329955A (zh) * 2014-11-17 2015-02-04 国核（北京）科学技术研究院有限公司 空气冷凝器系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110308764A1 (en) * 2009-03-06 2011-12-22 Gea Energietechnik Gmbh Air-cooled condenser system and method for setting up such a condenser plant
CN104329955A (zh) * 2014-11-17 2015-02-04 国核（北京）科学技术研究院有限公司 空气冷凝器系统

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