CN204255124U - A kind of evaporative condenser being applicable to power plant - Google Patents
A kind of evaporative condenser being applicable to power plant Download PDFInfo
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- CN204255124U CN204255124U CN201420622189.3U CN201420622189U CN204255124U CN 204255124 U CN204255124 U CN 204255124U CN 201420622189 U CN201420622189 U CN 201420622189U CN 204255124 U CN204255124 U CN 204255124U
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- 238000001816 cooling Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 123
- 238000012856 packing Methods 0.000 claims description 36
- 238000005507 spraying Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 238000009833 condensation Methods 0.000 abstract description 13
- 230000005494 condensation Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 73
- 239000010883 coal ash Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- -1 and at the same time Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Abstract
Description
技术领域technical field
本实用新型属于发电厂乏汽冷凝技术领域，具体涉及一种适用于电厂的蒸发冷凝器。The utility model belongs to the technical field of exhaust steam condensation in power plants, and in particular relates to an evaporation condenser suitable for power plants.
背景技术Background technique
我国西北地区“富煤缺水”，因此大量的电厂采用直接空冷系统来对汽轮机的乏汽进行冷凝降温。电厂直接空冷系统是汽轮机的乏汽由管道引入空冷凝汽器的钢制散热器中，由环境空气直接将其冷却为凝结水，然后循环使用。Northwest my country is "rich in coal and lacks water", so a large number of power plants use direct air cooling systems to condense and cool the exhaust steam of steam turbines. The direct air-cooling system of the power plant is that the exhaust steam of the steam turbine is introduced into the steel radiator of the air-cooled condenser through the pipeline, and is directly cooled by the ambient air into condensed water, and then recycled.
在夏季高温时段，空冷凝汽器换热温差减小，换热能力下降，并且沙尘、柳絮及其他污染物造成凝汽器表面脏污，对换热产生影响，使机组被迫降负荷运行，对电厂造成巨大的经济损失。During the high temperature period in summer, the heat exchange temperature difference of the air-cooled condenser decreases, and the heat exchange capacity decreases, and dust, catkins and other pollutants cause the surface of the condenser to be dirty, which affects the heat exchange, and the unit is forced to reduce the load to operate. Cause huge economic loss to the power plant.
目前，电厂采用蒸发式冷凝器来分流一部分乏汽进行冷凝，但是受环境因素的影响，蒸发式冷凝器的冷凝效率有限，若是能将进入蒸发式凝汽器的空气温度和喷淋水的温度降低，则能提高蒸发式凝汽器的冷凝效率，对电厂空冷系统夏季高温时段运行发挥更大的作用。At present, power plants use evaporative condensers to divert part of the exhaust steam for condensation, but affected by environmental factors, the condensation efficiency of evaporative condensers is limited. If the temperature of the air entering the evaporative condenser and the temperature of spray water can be adjusted If it is lowered, the condensation efficiency of the evaporative condenser can be improved, and it will play a greater role in the operation of the air cooling system of the power plant during the high temperature period in summer.
实用新型内容Utility model content
本实用新型的目的在于提供一种适用于电厂的蒸发冷凝器，不仅提高了蒸发式冷凝器的效率，而且改善了分流乏汽的换热效果。The purpose of the utility model is to provide an evaporative condenser suitable for power plants, which not only improves the efficiency of the evaporative condenser, but also improves the heat exchange effect of the diverted exhaust steam.
本实用新型所采用的技术方案是，一种适用于电厂的蒸发冷凝器，包括冷凝器壳体，冷凝器壳体相对的两侧壁上各设置有一个进风口，冷凝器壳体内设置有一个填料-盘管复合式蒸发冷却单元，该填料-盘管复合式蒸发冷却单元的左、右两侧各对称设置有一个立管式间接蒸发冷却单元，填料-盘管复合式蒸发冷却单元上方对应的冷凝器壳体顶壁上设置有排风口a，两个立管式间接蒸发冷却单元上方对应的冷凝器壳体顶壁上各设置有一个排风口b。The technical solution adopted by the utility model is that an evaporative condenser suitable for power plants includes a condenser shell, an air inlet is arranged on the opposite side walls of the condenser shell, and an air inlet is arranged in the condenser shell. Packing-coil compound evaporative cooling unit, the left and right sides of the packing-coil compound evaporative cooling unit are symmetrically arranged with a standpipe type indirect evaporative cooling unit, and the top of the packing-coil compound evaporative cooling unit corresponds to An air exhaust port a is provided on the top wall of the condenser shell, and an air exhaust port b is respectively provided on the top wall of the corresponding condenser shell above the two standpipe indirect evaporative cooling units.
本实用新型的特点还在于：The utility model is also characterized in that:
填料-盘管复合式蒸发冷却单元，包括有开式填料单元，开式填料单元由自上而下依次平行间隔设置的第一填料、第二填料及第三填料组成，第三填料呈倒三角形；第一填料的上方依次设置有喷淋装置及收水器；收水器的上方设置有S形的干式换热盘管，干式换热盘管的下端与湿式换热盘管相连接，湿式换热盘管呈S形围绕第一填料、第二填料及第三填料设置；第三填料的下方设置有循环水箱a，循环水箱a内设置有水泵a，水泵a通过供水管a与喷淋装置连接。The packing-coil composite evaporative cooling unit includes an open packing unit. The open packing unit is composed of the first packing, the second packing and the third packing arranged in parallel intervals from top to bottom, and the third packing is in an inverted triangle shape. ;A spray device and a water eliminator are arranged in turn above the first filler; an S-shaped dry heat exchange coil is arranged above the water eliminator, and the lower end of the dry heat exchange coil is connected with the wet heat exchange coil , the wet heat exchange coil is arranged in an S shape around the first filler, the second filler and the third filler; a circulating water tank a is arranged below the third filler, and a water pump a is arranged in the circulating water tank a, and the water pump a communicates with the water supply pipe a Sprinkler connection.
喷淋装置由喷淋管和均匀设置于喷淋管上多个向下喷淋的喷头组成，供水管a与喷淋管相连接。The spraying device is composed of a spraying pipe and a plurality of downward spraying nozzles evenly arranged on the spraying pipe, and the water supply pipe a is connected with the spraying pipe.
第三填料与循环水箱a之间形成风道。An air duct is formed between the third filler and the circulating water tank a.
立管式间接蒸发冷却单元，包括有立管式换热装置，立管式换热装置由多根竖直平行设置的换热管组成，立管式换热装置的上方依次设置有布水器及挡水板；立管式换热装置的下方设置有循环水箱b，循环水箱b内设置有水泵b，水泵b通过供水管b与布水器连接。The vertical pipe indirect evaporative cooling unit includes a vertical pipe heat exchange device. The vertical pipe heat exchange device is composed of a plurality of vertical and parallel heat exchange tubes. The top of the vertical pipe heat exchange device is sequentially arranged with a water distributor. and a water baffle; a circulating water tank b is arranged below the vertical pipe heat exchange device, a water pump b is arranged in the circulating water tank b, and the water pump b is connected to the water distributor through the water supply pipe b.
布水器由布水管和均匀设置于布水管上的多个向下喷淋的喷嘴组成；布水管与供水管b相连。The water distributor is composed of a water distribution pipe and a plurality of downward spraying nozzles evenly arranged on the water distribution pipe; the water distribution pipe is connected with the water supply pipe b.
立管式换热装置与循环水箱b之间形成空气流道。An air passage is formed between the vertical pipe heat exchange device and the circulating water tank b.
立管式换热装置与同侧的进风口之间设置有金属网过滤器。A metal mesh filter is arranged between the vertical pipe heat exchange device and the air inlet on the same side.
排风口a内设置有风机a；排风口b内设置有风机b。A fan a is arranged in the air outlet a; a fan b is arranged in the air outlet b.
本实用新型的有益效果在于：The beneficial effects of the utility model are:
a.本实用新型的蒸发冷凝器内，将立管式间接蒸发冷却单元、直接蒸发冷却单元、湿式换热盘管单元和干式换热盘管单元相结合，在靠近进风口处设置立管式间接蒸发冷却单元，利用立管式间接蒸发冷却单元对空气进行等湿降温，可提高蒸发式冷凝器对汽轮机乏汽的冷凝效率，并且电厂周围煤灰渣多，立管式间接蒸发冷却单元可以防止管道阻塞，特别适合电厂的恶劣环境。a. In the evaporative condenser of the present utility model, the standpipe type indirect evaporative cooling unit, direct evaporative cooling unit, wet heat exchange coil unit and dry heat exchange coil unit are combined, and a standpipe is set near the air inlet The indirect evaporative cooling unit uses the standpipe indirect evaporative cooling unit to cool the air with equal humidity, which can improve the condensation efficiency of the evaporative condenser for the exhaust steam of the steam turbine, and there are many coal ash around the power plant, the standpipe indirect evaporative cooling unit It can prevent pipeline blockage and is especially suitable for the harsh environment of power plants.
b.本实用新型的蒸发冷凝器内，在管式间接蒸发冷却单元后方设置直接蒸发冷却单元，预冷后的空气在直接蒸发冷却单元与淋水发生热湿交换，空气等焓加湿降温，水温降低后喷淋在湿式换热盘管单元，空气加湿降温和水温降低可以强化盘管换热，提高换热效率。b. In the evaporative condenser of the present utility model, a direct evaporative cooling unit is arranged behind the tube-type indirect evaporative cooling unit, and the pre-cooled air undergoes heat and moisture exchange with the shower water in the direct evaporative cooling unit, and the air is enthalpy humidified and cooled, and the water temperature After lowering, spray on the wet heat exchange coil unit, air humidification and cooling and water temperature reduction can strengthen the heat exchange of the coil and improve the heat exchange efficiency.
c.本实用新型的蒸发冷凝器内，在湿式换热盘管单元和干式换热盘管单元中间设置收水器，对进入干式换热盘管单元的空气进行除湿，避免湿空气因乏汽温度高而在盘管表面结垢的现象，除湿后的空气可以对乏汽进行预冷。c. In the evaporative condenser of the present utility model, a water eliminator is set between the wet heat exchange coil unit and the dry heat exchange coil unit to dehumidify the air entering the dry heat exchange coil unit, so as to prevent the humid air from The exhaust steam temperature is high and scale is formed on the surface of the coil, and the dehumidified air can pre-cool the exhaust steam.
d.本实用新型的蒸发冷凝器内，在湿式换热盘管单元的盘管中间设置填料，增加了空气与水的接触面积，提高水的汽化潜热量，同时空气跟淋水在填料上发生热湿交换，空气和水一起降温，可以带走更多热量，提高乏汽的冷凝效率。d. In the evaporative condenser of the present utility model, packing is arranged in the middle of the coil of the wet heat exchange coil unit, which increases the contact area between air and water, improves the latent heat of vaporization of water, and at the same time, air and water are sprayed on the packing. Heat and moisture exchange, air and water cool down together, can take away more heat and improve the condensation efficiency of exhaust steam.
e.本实用新型的蒸发冷凝器内采用金属网过滤器，金属材质可以反复清洗，寿命长且经济。e. The evaporative condenser of this utility model adopts a metal mesh filter, and the metal material can be cleaned repeatedly, and has a long service life and is economical.
f.本实用新型的蒸发冷凝器内，换热盘管采用倾斜布置的形式，可以使冷凝液体及时排出，降低冷凝热阻。f. In the evaporative condenser of the utility model, the heat exchange coil adopts the form of inclined arrangement, which can discharge the condensed liquid in time and reduce the thermal resistance of condensation.
附图说明Description of drawings
图1是本实用新型蒸发冷凝器的结构示意图。Fig. 1 is a structural schematic diagram of the utility model evaporative condenser.
图中，1.金属网过滤器，2.挡水板，3.风机b，4.立管式换热装置，5.干式换热盘管，6.风机a，7.收水器，8.第一填料，9.喷嘴，10.湿式换热盘管，11.第三填料，12.水泵a，13.循环水箱a，14.循环水箱b，15.水泵b，16.进风口，17.排风口a，18.排风口b，19.供水管a，20.供水管b，21.第二填料，22.布水管。In the figure, 1. Metal mesh filter, 2. Water baffle, 3. Fan b, 4. Standpipe heat exchange device, 5. Dry heat exchange coil, 6. Fan a, 7. Water eliminator, 8. First packing, 9. Nozzle, 10. Wet heat exchange coil, 11. Third packing, 12. Water pump a, 13. Circulating water tank a, 14. Circulating water tank b, 15. Water pump b, 16. Air inlet , 17. Air outlet a, 18. Air outlet b, 19. Water supply pipe a, 20. Water supply pipe b, 21. Second packing, 22. Water distribution pipe.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本实用新型进行详细说明。The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本实用新型适用于电厂的蒸发冷凝器，其结构如图1所示，包括冷凝器壳体，冷凝器壳体相对的两侧壁上各设置有一个进风口16，冷凝器壳体内设置有一个填料-盘管复合式蒸发冷却单元，该填料-盘管复合式蒸发冷却单元的左、右两侧各对称设置有一个立管式间接蒸发冷却单元，填料-盘管复合式蒸发冷却单元上方对应的冷凝器壳体顶壁上设置有排风口a17，两个立管式间接蒸发冷却单元上方对应的冷凝器壳体顶壁上各设置有一个排风口b18。The utility model is suitable for the evaporative condenser of a power plant, and its structure is shown in Figure 1, including a condenser shell, an air inlet 16 is respectively arranged on the opposite side walls of the condenser shell, and an air inlet 16 is arranged in the condenser shell. Packing-coil compound evaporative cooling unit, the left and right sides of the packing-coil compound evaporative cooling unit are symmetrically arranged with a standpipe type indirect evaporative cooling unit, and the top of the packing-coil compound evaporative cooling unit corresponds to An air exhaust port a17 is provided on the top wall of the condenser shell, and an air exhaust port b18 is respectively provided on the corresponding top wall of the condenser shell above the two standpipe indirect evaporative cooling units.
排风口a17内设置有风机a6；排风口b18内设置有风机b3。A fan a6 is arranged in the air outlet a17; a fan b3 is arranged in the air outlet b18.
填料-盘管复合式蒸发冷却单元，如图1所示，包括有开式填料单元，开式填料单元由自上而下依次平行间隔设置的第一填料8、第二填料21及第三填料11组成，第三填料11呈倒三角形；第一填料8的上方依次设置有喷淋装置及收水器7，喷淋装置由喷淋管和均匀设置于喷淋管上多个向下喷淋的喷头组成，收水器7的上方设置有S形的干式换热盘管5，干式换热盘管5的下端与湿式换热盘管10相连接，湿式换热盘管10呈S形围绕第一填料8、第二填料21及第三填料11设置；第三填料11的下方设置有循环水箱a13，循环水箱a13内设置有水泵a12，水泵a12通过供水管a19与喷淋管连接。The packing-coil composite evaporative cooling unit, as shown in Figure 1, includes an open packing unit, and the open packing unit consists of first packing 8, second packing 21 and third packing arranged in parallel intervals from top to bottom. 11, the third filler 11 is an inverted triangle; the top of the first filler 8 is provided with a spray device and a water receiver 7 in sequence, and the spray device is composed of a spray pipe and a plurality of downward spraying pipes evenly arranged on the spray pipe. S-shaped dry heat exchange coil 5 is arranged above the water eliminator 7, and the lower end of the dry heat exchange coil 5 is connected with the wet heat exchange coil 10, and the wet heat exchange coil 10 is S-shaped. It is arranged around the first packing 8, the second packing 21 and the third packing 11; the circulating water tank a13 is arranged under the third packing 11, and the water pump a12 is arranged in the circulating water tank a13, and the water pump a12 is connected with the spray pipe through the water supply pipe a19 .
第三填料11与循环水箱a13之间形成风道。An air duct is formed between the third filler 11 and the circulating water tank a13.
干式换热盘管5与湿式换热盘管10均呈S形倾斜式设置。Both the dry heat exchange coil 5 and the wet heat exchange coil 10 are arranged in an S-shaped inclined manner.
立管式间接蒸发冷却单元，包括有立管式换热装置4，立管式换热装置4由多根竖直设置的换热管组成；立管式换热装置4的上方设置有布水器，布水器由布水管22和均匀设置于布水管上的多个向下喷淋的喷嘴9组成；布水器的上方设置有挡水板2；立管式换热装置4的下方设置有循环水箱b14，循环水箱b14内设置有水泵b15，水泵b15通过供水管b20与布水管22连接。The standpipe type indirect evaporative cooling unit includes a standpipe heat exchange device 4, which is composed of a plurality of vertically arranged heat exchange tubes; the top of the standpipe heat exchange device 4 is provided with a water The water distributor is composed of a water distribution pipe 22 and a plurality of downward spraying nozzles 9 evenly arranged on the water distribution pipe; a water baffle 2 is arranged above the water distributor; a vertical pipe heat exchange device 4 is provided below The circulating water tank b14 is provided with a water pump b15 inside the circulating water tank b14, and the water pump b15 is connected to the water distribution pipe 22 through the water supply pipe b20.
立管式换热装置4与循环水箱b14之间形成空气流道。An air passage is formed between the vertical pipe heat exchange device 4 and the circulating water tank b14.
立管式换热装置4与同侧的进风口16之间设置有金属网过滤器1。A metal mesh filter 1 is arranged between the vertical pipe heat exchange device 4 and the air inlet 16 on the same side.
汽轮机的部分乏汽被分流至本实用新型的蒸发冷凝器，通过该冷凝器对乏汽进行冷凝。采用金属网过滤器1，金属材质可以反复清洗，寿命长且经济；采用立管式间接蒸发冷却单元和填料-盘管复合式蒸发冷却单元来对进入冷凝器壳体内的空气进行降温处理，同时喷淋水也发生降温，空气和水的温降可以提高蒸发式冷凝器对乏汽的冷凝效率；将湿式换热盘管10与填料单元结合，增加了空气与水的接触面积，同时空气跟淋水在开式填料单元内发生热湿交换，空气和水一起降温，可以带走更多热量，提高乏汽的冷凝效率；收水器7对湿空气进行除湿后进入干式换热盘管5预冷汽轮机乏汽，避免湿空气因乏汽温度高而在干式换热盘管5表面结垢的现象，除湿后的空气可以对乏汽进行预冷；干式换热盘管单5和湿式换热盘管10均采用倾斜布置的形式，可以使冷凝液体及时、顺利的排出，提高换热效率，降低冷凝热阻，使蒸发式冷凝器对乏汽的冷凝效率增加，为电厂空冷系统夏季高温大风运行提供一定的富裕量，使空冷机组的运行效果更佳。Part of the exhaust steam of the steam turbine is diverted to the evaporative condenser of the utility model, and the exhaust steam is condensed through the condenser. Using metal mesh filter 1, the metal material can be cleaned repeatedly, with long service life and economical; using standpipe type indirect evaporative cooling unit and filler-coil composite evaporative cooling unit to cool down the air entering the condenser shell, and at the same time The spray water also cools down, and the temperature drop of air and water can improve the condensation efficiency of the evaporative condenser for exhaust steam; combining the wet heat exchange coil 10 with the packing unit increases the contact area between the air and water, and at the same time, the air and water Heat and moisture exchange occurs in the open packing unit with water spraying, and the air and water cool down together, which can take away more heat and improve the condensation efficiency of exhaust steam; the water eliminator 7 dehumidifies the humid air and enters the dry heat exchange coil 5 Pre-cool the exhaust steam of the steam turbine to avoid the phenomenon of humid air scaling on the surface of the dry heat exchange coil 5 due to the high exhaust steam temperature. The dehumidified air can pre-cool the exhaust steam; the dry heat exchange coil is single 5 Both the evaporative condenser and the wet heat exchange coil 10 adopt an inclined arrangement, which can discharge the condensed liquid in a timely and smooth manner, improve the heat exchange efficiency, reduce the thermal resistance of condensation, and increase the condensation efficiency of the evaporative condenser for exhaust steam, providing air cooling for the power plant. The high temperature and windy operation of the system in summer provides a certain margin, so that the operation effect of the air-cooled unit is better.
本实用新型适用于电厂的蒸发冷凝器的工作过程为：The working process of the utility model applicable to the evaporative condenser of the power plant is:
1.一次空气系统：1. Primary air system:
新风经金属网过滤器1过滤后，进入立管间接蒸发冷却单元内的立管式换热装置4，在换热管内二次空气与水发生热湿交换带走换热管外一次空气的热量，等湿冷却的空气在开式填料单元处与水发生热湿交换，空气等焓加湿降温，在湿式换热盘管10处空气与湿式换热盘管10外的淋水共同带走湿式换热盘管10内乏汽的热量，湿式换热盘管10间的开式填料单元使升温空气跟淋水充分接触，空气再次等焓加湿降温与淋水一起带走湿式换热盘管10内乏汽的热量，经收水器7进入干式换热盘管5，除湿后的空气对干式换热盘管5内乏汽进行预冷，在风机a6的作用下经排风口a17排出。After the fresh air is filtered by the metal mesh filter 1, it enters the vertical pipe heat exchange device 4 in the vertical pipe indirect evaporative cooling unit, and the heat and moisture exchange between the secondary air and water in the heat exchange pipe takes away the heat of the primary air outside the heat exchange pipe , the wet-cooled air exchanges heat and moisture with water at the open packing unit, the air is enthalpy humidified and cooled, and the air at the wet heat exchange coil 10 and the water outside the wet heat exchange coil 10 jointly take away the wet heat exchanger The heat of the exhausted steam in the heat coil 10, the open packing unit between the wet heat exchange coil 10 makes the heated air fully contact with the water, and the air is again isenthalpic humidified and cooled, and the water is taken away in the wet heat exchange coil 10 The heat of the exhausted steam enters the dry heat exchange coil 5 through the water collector 7, and the dehumidified air precools the exhausted steam in the dry heat exchange coil 5, and is discharged through the exhaust outlet a17 under the action of the fan a6 .
2.二次空气系统：2. Secondary air system:
新风经金属网过滤器1进入立管间接蒸发冷却单元的立管式换热装置4内，换热管内二次空气与淋水发生热湿交换带走管外一次空气的热量，经挡水板2后，由风机b3经排风口b18排出。The fresh air enters the standpipe heat exchange device 4 of the standpipe indirect evaporative cooling unit through the metal mesh filter 1, and the heat and moisture exchange between the secondary air in the heat exchange pipe and the shower water takes away the heat of the primary air outside the pipe, and passes through the water baffle After 2, it is discharged by the fan b3 through the exhaust port b18.
3.汽轮机乏汽系统：3. Turbine exhaust steam system:
一部分汽轮机乏汽由冷凝器壳体内的干式换热盘管5的一端进入干式换热盘管5内，经一次风预冷后降温，一部分乏汽冷凝，未冷凝的乏汽继续进入湿式换热盘管10，湿式换热盘管10外的空气和淋水共同带走湿式换热盘管10内乏汽的热量，乏汽冷凝后由湿式换热盘管10排出，进入下一个发电循环。A part of the exhaust steam of the steam turbine enters the dry heat exchange coil 5 from one end of the dry heat exchange coil 5 in the condenser shell, and is cooled after being pre-cooled by the primary air. The heat exchange coil 10, the air outside the wet heat exchange coil 10 and the water together take away the heat of the exhaust steam in the wet heat exchange coil 10, and the exhaust steam is condensed and discharged by the wet heat exchange coil 10 to enter the next power generation cycle.
4.第一循环水系统：4. The first circulating water system:
循环水箱b14内的循环水由水泵b15送到立管式换热装置4上方的布水器内，经喷嘴9喷淋在立管式换热装置4内的换热管内，换热管内淋水与二次空气进行热湿交换带走管外一次空气的热量，降温后的循环水落入循环水箱b14。The circulating water in the circulating water tank b14 is sent to the water distributor above the vertical pipe heat exchange device 4 by the water pump b15, sprayed into the heat exchange tubes in the vertical pipe heat exchange device 4 through the nozzle 9, and the heat exchange tubes are sprayed with water The heat and moisture exchange with the secondary air takes away the heat of the primary air outside the pipe, and the cooled circulating water falls into the circulating water tank b14.
5.第二循环水系统：5. The second circulating water system:
循环水箱a13内的循环冷水由水泵a12送到湿式换热盘管10上方的喷淋装置内，与空气共同带走湿式换热盘管10内乏汽的热量，换热后的空气和淋水在湿式换热盘管10进行热湿交换，水温下降后与空气一起带走管内乏汽热量，在开式填料单元淋水与预冷后的空气发生热湿交换，水温降低后落入下面的循环水箱a13。The circulating cold water in the circulating water tank a13 is sent by the water pump a12 to the spray device above the wet heat exchange coil 10, and together with the air, takes away the heat of exhausted steam in the wet heat exchange coil 10, and the air and water after heat exchange The heat and moisture exchange is carried out in the wet heat exchange coil 10. After the water temperature drops, it will take away the heat of exhausted steam in the pipe together with the air. In the open packing unit, the water will exchange heat and moisture with the pre-cooled air, and the water will fall into the lower air after the water temperature drops. Circulating water tank a13.
本实用新型适用于电厂的蒸发冷凝器，采用立管式间接蒸发冷却单元对空气进行预冷(对空气进行等湿降温)，可提高冷凝器对汽轮机乏汽的冷凝效率，并且电厂周围煤灰渣多，立管式间接蒸发冷却单元可以防止管道阻塞，特别适合电厂的恶劣环境；经立管式间接蒸发冷却单元预冷后的空气和喷淋水在开式填料单元发生热湿交换，空气等焓加湿降温，湿式换热盘管10与开式填料单元结合增加空气与水接触面积，干式换热盘管5对汽轮机乏汽进行预冷机，为电厂空冷系统夏季高温大风运行提供一定的富裕量，使空冷机组的运行效果更佳，为电厂带来巨大的经济效益。The utility model is suitable for the evaporative condenser of the power plant. The vertical pipe type indirect evaporative cooling unit is used to pre-cool the air (equal-humidity cooling of the air), which can improve the condensation efficiency of the condenser to the exhaust steam of the steam turbine, and the coal ash around the power plant There is a lot of slag, and the standpipe indirect evaporative cooling unit can prevent pipeline blockage, which is especially suitable for the harsh environment of power plants; the air and spray water pre-cooled by the standpipe indirect evaporative cooling unit undergo heat and moisture exchange in the open packing unit, and the air Equal enthalpy humidification and cooling, the wet heat exchange coil 10 is combined with the open packing unit to increase the contact area between air and water, and the dry heat exchange coil 5 is a precooler for the exhaust steam of the steam turbine, providing a certain amount for the high temperature and strong wind operation of the air cooling system of the power plant in summer The surplus amount makes the air-cooling unit operate better and brings huge economic benefits to the power plant.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332318A (en) * | 2017-12-20 | 2018-07-27 | 西安工程大学 | A kind of female vertical gilled tube indirect evaporating-cooling core of band |
| CN108728869A (en) * | 2017-04-19 | 2018-11-02 | 沈阳铝镁设计研究院有限公司 | The equipment cooling device of Smoke Gas Purity by Electrolysis system |
| CN110961033A (en) * | 2019-12-09 | 2020-04-07 | 中国石油天然气集团有限公司 | High-stability high-vacuum method and high-vacuum system suitable for polycarbonate production |
| CN118149609A (en) * | 2024-04-10 | 2024-06-07 | 浙江金菱制冷工程有限公司 | Novel evaporative condenser |
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2014
- 2014-10-24 CN CN201420622189.3U patent/CN204255124U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728869A (en) * | 2017-04-19 | 2018-11-02 | 沈阳铝镁设计研究院有限公司 | The equipment cooling device of Smoke Gas Purity by Electrolysis system |
| CN108728869B (en) * | 2017-04-19 | 2021-02-19 | 沈阳铝镁设计研究院有限公司 | Equipment cooling device of electrolytic flue gas purification system |
| CN108332318A (en) * | 2017-12-20 | 2018-07-27 | 西安工程大学 | A kind of female vertical gilled tube indirect evaporating-cooling core of band |
| CN110961033A (en) * | 2019-12-09 | 2020-04-07 | 中国石油天然气集团有限公司 | High-stability high-vacuum method and high-vacuum system suitable for polycarbonate production |
| CN110961033B (en) * | 2019-12-09 | 2023-12-29 | 中国石油天然气集团有限公司 | High-stability high-vacuum method and high-vacuum system suitable for polycarbonate production |
| CN118149609A (en) * | 2024-04-10 | 2024-06-07 | 浙江金菱制冷工程有限公司 | Novel evaporative condenser |
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