CN101614487B - Peak cooling device for air cooling condenser - Google Patents
Peak cooling device for air cooling condenser Download PDFInfo
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- CN101614487B CN101614487B CN200910088884XA CN200910088884A CN101614487B CN 101614487 B CN101614487 B CN 101614487B CN 200910088884X A CN200910088884X A CN 200910088884XA CN 200910088884 A CN200910088884 A CN 200910088884A CN 101614487 B CN101614487 B CN 101614487B
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- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 12
- 239000007921 spray Substances 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Abstract
本发明涉及电站直接空冷凝汽器系统。本发明提供的一种空冷凝汽器尖峰冷却装置，包括位于空冷凝汽器内下部水平放置的风机、位于空冷凝汽器表面的表面式散热器、空冷凝汽器内部的冷却水输送管道以及安装在冷却水输送管道出口处的喷嘴，空冷凝汽器内上部安装有支撑架，冷却水输送管道悬挂在支撑架的下部，冷却水输送管道出口处的喷嘴为竖直安装的螺旋型喷嘴，运行过程中，冷却水经螺旋型喷嘴雾化成小液滴在下降过程中与迎面而上的热空气流相对而行，使得液滴与空气流有更充分的接触时间和空间，因而强化了微小水滴的蒸发过程，显著的降低散热器的空气温度。
The invention relates to a direct air-cooled condenser system of a power station. The invention provides a peak cooling device for an air-cooled condenser, which includes a horizontal fan located at the lower part of the air-cooled condenser, a surface radiator located on the surface of the air-cooled condenser, a cooling water delivery pipe inside the air-cooled condenser, and The nozzle installed at the outlet of the cooling water delivery pipeline, the upper part of the air-cooled condenser is equipped with a support frame, the cooling water delivery pipeline is suspended on the lower part of the support frame, and the nozzle at the outlet of the cooling water delivery pipeline is a spiral nozzle installed vertically. During operation, the cooling water is atomized into small droplets through the spiral nozzle, and in the process of descending, it runs opposite to the oncoming hot air flow, so that the liquid droplets and the air flow have more sufficient contact time and space, thus strengthening the micro The evaporation process of the water droplets significantly reduces the air temperature of the radiator.
Description
技术领域 technical field
本发明涉及电站直接空冷凝汽器系统，具体涉及一种空冷凝汽器尖峰冷却装置。The invention relates to a direct air-cooled condenser system of a power station, in particular to a peak cooling device for an air-cooled condenser.
背景技术 Background technique
电站直接空冷凝汽器系统(ACC)是我国北方地区火力发电厂近年来新兴的节水型蒸汽冷凝技术。目前在我国北方地区已经有近200台不同容量的机组使用这种技术，取得了很好的节水效益。该系统装置直接利用环境空气，通过表面式换热器来冷凝汽轮机的排汽。在夏季高温时段，由于环境温度较高，为提升换热器的换热能力，通常在ACC空冷单元内加装尖峰冷却装置，采用喷雾加湿并蒸发吸热的原理，降低参与换热的环境空气温度。The direct air-cooled condenser system (ACC) of the power station is a newly emerging water-saving steam condensation technology for thermal power plants in northern my country in recent years. At present, nearly 200 units of different capacities have used this technology in northern my country, and have achieved good water-saving benefits. The system device directly uses ambient air to condense the exhaust steam of the steam turbine through a surface heat exchanger. During the high temperature period in summer, due to the high ambient temperature, in order to improve the heat exchange capacity of the heat exchanger, a peak cooling device is usually installed in the ACC air cooling unit, and the principle of spray humidification and evaporation heat absorption is adopted to reduce the ambient air participating in heat exchange temperature.
现有的尖峰冷却装置通过管道和漩流型喷嘴运送和喷射冷却水，该冷却水输送管道布置在空冷凝汽器内部风机出口处，喷嘴喷射方向为水平方向，喷出的雾化水在与空气接触过程中蒸发吸热，能够降低散热器的空气温度，提高散热器的散热能力。但是，由于现有尖峰冷却装置的雾化喷嘴安装位置较低，只是处于风机出口略高位置水平高度，所以雾化而成的微小液滴在空冷单元内下降路径短，与空气接触时间少，因而不利于液滴在空冷单元内蒸发吸热，同时，由于采用普通漩流喷嘴，容易堵塞，且其雾化角度和面积流量较小，为保证喷雾水量和喷雾效果，需要的喷嘴数量较多，呈两排布置，相应分支管道较多，安装复杂。The existing peak cooling device transports and sprays cooling water through pipelines and swirl nozzles. The cooling water delivery pipeline is arranged at the outlet of the fan inside the air-cooled condenser. Evaporation and heat absorption during air contact can reduce the air temperature of the radiator and improve the heat dissipation capacity of the radiator. However, due to the low installation position of the atomizing nozzle of the existing peak cooling device, which is only slightly higher than the fan outlet level, the atomized tiny liquid droplets have a short descending path in the air cooling unit and less contact time with the air. Therefore, it is not conducive to the evaporation and heat absorption of liquid droplets in the air-cooling unit. At the same time, due to the use of ordinary swirl nozzles, it is easy to block, and its atomization angle and area flow rate are small. In order to ensure the spray water volume and spray effect, more nozzles are required. , arranged in two rows, corresponding to more branch pipes, complex installation.
发明内容 Contents of the invention
本发明的目的在于克服现有技术中的缺陷，设计一种冷却效率高，系统简化，流道不易堵塞，雾化面积增大，安装维护方便的空冷凝汽器尖峰冷却装置。The purpose of the present invention is to overcome the defects in the prior art, and design a peak cooling device for an air-cooled condenser with high cooling efficiency, simplified system, difficult flow path blockage, increased atomization area, and convenient installation and maintenance.
为实现上述目的，本发明的空冷凝汽器尖峰冷却装置，包括位于空冷凝汽器内下部的水平方向放置的风机、位于空冷凝汽器表面的表面式散热器、空冷凝汽器内部的冷却水输送管道以及安装在冷却水输送管道出口处的喷嘴，其中，空冷凝汽器内上部安装有支撑架，冷却水输送管道悬挂在支撑架的下部，冷却水输送管道出口处的喷嘴为竖直安装的螺旋型喷嘴；所述喷嘴的接口内径为18-22mm，其喷口的内径为2mm，喷嘴单个流量为40-60L/min；所述支撑架上吊装了一排带有螺旋型喷嘴的管道，喷嘴的喷射方向为垂直向下，所述喷嘴正对下方的空冷凝汽器内下部的风机出口。In order to achieve the above object, the peak cooling device of the air-cooled condenser of the present invention includes a fan placed in the horizontal direction at the lower part of the air-cooled condenser, a surface radiator located on the surface of the air-cooled condenser, and a cooling system inside the air-cooled condenser. The water conveying pipe and the nozzle installed at the outlet of the cooling water conveying pipe, wherein, the upper part of the air-cooled condenser is equipped with a supporting frame, the cooling water conveying pipe is suspended on the lower part of the supporting frame, and the nozzle at the outlet of the cooling water conveying pipe is vertical Installed spiral nozzle; the inner diameter of the interface of the nozzle is 18-22mm, the inner diameter of the nozzle is 2mm, and the single flow rate of the nozzle is 40-60L/min; a row of pipes with spiral nozzles are hoisted on the support frame , the injection direction of the nozzle is vertically downward, and the nozzle is directly facing the outlet of the fan in the lower part of the air-cooled condenser below.
其中，支撑架安装在空冷凝汽器内上部1/3高度处。Wherein, the support frame is installed at the upper 1/3 height of the air-cooled condenser.
其中，喷嘴为具有3圈螺旋片的螺旋型喷嘴，其3圈螺旋片在喷嘴的喷口处。Wherein, the nozzle is a helical nozzle with 3 turns of helical flakes, and the 3 turns of helical flakes are at the outlet of the nozzle.
本发明的优点和有益效果在于：竖直安装的螺旋型喷嘴的流量较大，雾化效果好，喷射方向为竖直方向，运行过程中，雾化的小液滴在下降过程中与迎面而上的热空气流相对而行，使得液滴与空气流有更充分的接触时间和空间，强化了微小水滴的蒸发过程，更显著的降低散热器的空气温度。The advantages and beneficial effects of the present invention are: the flow rate of the vertically installed spiral nozzle is relatively large, the atomization effect is good, the spraying direction is the vertical direction, and during the operation process, the atomized small droplets collide with the head-on during the falling process. The hot air flow on the surface runs opposite to each other, so that the liquid droplets and the air flow have more sufficient contact time and space, strengthen the evaporation process of the tiny water droplets, and reduce the air temperature of the radiator more significantly.
附图说明 Description of drawings
图1是本发明空冷凝汽器尖峰冷却装置的结构示意图；Fig. 1 is the structural representation of air-cooled condenser peak cooling device of the present invention;
图2是本发明空冷凝汽器尖峰冷却装置的螺旋型喷嘴与冷却水输送管道装配示意图。Fig. 2 is a schematic diagram of the assembly of the spiral nozzle and the cooling water delivery pipeline of the air-cooled condenser peak cooling device of the present invention.
图中：1、螺旋型喷嘴；2、冷却水输送管道；3、支撑架；4、管道吊架；5、表面式散热器；6、空冷凝汽器内部风机；7、螺旋型喷嘴中心圆锥孔；8、螺旋型喷嘴螺旋片。In the figure: 1. Spiral nozzle; 2. Cooling water delivery pipe; 3. Support frame; 4. Pipe hanger; 5. Surface radiator; 6. Internal fan of air-cooled condenser; 7. Central cone of spiral nozzle Holes; 8. Spiral nozzle helix.
具体实施方式 Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
如附图1所示，本发明具体实施的技术方案是：在空冷凝汽器内部上方1/3高度处(约7-9m)安装支撑架3，冷却水输送管道2通过管道吊架4悬挂在支撑架3的下部，冷却水输送管道2是一排并列布置的管道，其出口处安装有螺旋型喷嘴1。螺旋型喷嘴1垂直安装，喷射方向为垂直向下，正对下方的空冷凝汽器内部风机6的出口，螺旋型喷嘴1能将水的压力转变成动能，冷却水通过螺旋型喷嘴1的螺旋型喷嘴中心圆锥孔7喷出，沿旋转角度经3圈螺旋型喷嘴螺旋片8喷成广角实心的雾化水，喷嘴单个流量为40-60L/min，喷雾夹角为120度甚至更大，喷雾射程远，喷透力强，单个喷雾覆盖面积大，可适应1-10bar水压工作范围。其中，螺旋型喷嘴可以选用上海辰创金属制品有限公司的LX型螺旋喷嘴。As shown in accompanying drawing 1, the technical scheme of concrete implementation of the present invention is: install
运行过程中，经螺旋型喷嘴雾化的小液滴在下降过程中与迎面而上的汽轮机排出的热空气流相对而行，使得液滴与空气流有更充分的接触时间和空间，强化了微小水滴的蒸发过程，更显著的降低表面式散热器5处的空气温度。During the operation, the small liquid droplets atomized by the spiral nozzle are facing the hot air flow discharged from the oncoming steam turbine during the falling process, so that the liquid droplets and the air flow have more sufficient contact time and space, and strengthen the The evaporation process of tiny water droplets more significantly reduces the air temperature at the surface radiator 5 .
本实施例的优点在于：The advantage of this embodiment is:
空冷凝汽器尖峰冷却装置的冷却水通过螺旋型喷嘴能产生良好的雾化效果，因为选择合理的喷射位置和喷射方向，雾化水能够直接与热空气相对而行，冷却效果明显，喷嘴数量比旧有的漩流或直流型喷嘴数量减少一半，并相应减少分支管道数量和支吊架数量，使得喷嘴数量和分支管道的安装更加容易。The cooling water of the peak cooling device of the air-cooled condenser can produce a good atomization effect through the spiral nozzle, because the spraying position and spraying direction are selected reasonably, the atomized water can directly go against the hot air, the cooling effect is obvious, and the number of nozzles The number of nozzles is reduced by half compared with the old swirl or straight-line nozzles, and the number of branch pipes and hangers is reduced accordingly, making the installation of nozzles and branch pipes easier.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.
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| CN200910088884XA CN101614487B (en) | 2009-07-21 | 2009-07-21 | Peak cooling device for air cooling condenser |
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| CN200910088884XA CN101614487B (en) | 2009-07-21 | 2009-07-21 | Peak cooling device for air cooling condenser |
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| CN101614487B true CN101614487B (en) | 2012-05-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106225005A (en) * | 2016-08-31 | 2016-12-14 | 吉林省电力科学研究院有限公司 | A kind of Direct Air-Cooled tower waste heat circulation system |
| CN110986628B (en) * | 2019-11-22 | 2023-06-23 | 沈阳仪表科学研究院有限公司 | Environment adjusting device for horizontal induced air type air cooler |
| CN114000928B (en) * | 2021-10-20 | 2023-08-22 | 杭州中能汽轮动力有限公司 | Tandem peak cooling and waste heat recovery turbo generator set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236041A (en) * | 1991-07-22 | 1993-08-17 | Hull Corporation | Cyclonic vapor flow condenser |
| JP2002122387A (en) * | 2000-10-13 | 2002-04-26 | Hitachi Eng Co Ltd | Air-cooled heat exchanger |
| US6446942B1 (en) * | 2001-05-02 | 2002-09-10 | Ming-Kun Tsai | Cooling tower |
| JP2003194482A (en) * | 2001-12-25 | 2003-07-09 | Jfe Engineering Kk | Air-cooled steam condenser |
| CN1572373A (en) * | 2003-06-12 | 2005-02-02 | 石川岛播磨重工业株式会社 | Spiral nozzle |
| CN2861939Y (en) * | 2005-12-03 | 2007-01-24 | 叶泽春 | Spirally-guided injector |
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2009
- 2009-07-21 CN CN200910088884XA patent/CN101614487B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236041A (en) * | 1991-07-22 | 1993-08-17 | Hull Corporation | Cyclonic vapor flow condenser |
| JP2002122387A (en) * | 2000-10-13 | 2002-04-26 | Hitachi Eng Co Ltd | Air-cooled heat exchanger |
| US6446942B1 (en) * | 2001-05-02 | 2002-09-10 | Ming-Kun Tsai | Cooling tower |
| JP2003194482A (en) * | 2001-12-25 | 2003-07-09 | Jfe Engineering Kk | Air-cooled steam condenser |
| CN1572373A (en) * | 2003-06-12 | 2005-02-02 | 石川岛播磨重工业株式会社 | Spiral nozzle |
| CN2861939Y (en) * | 2005-12-03 | 2007-01-24 | 叶泽春 | Spirally-guided injector |
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