CN221464365U - Cooling system for direct air cooling unit - Google Patents
Cooling system for direct air cooling unit Download PDFInfo
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- CN221464365U CN221464365U CN202322904384.7U CN202322904384U CN221464365U CN 221464365 U CN221464365 U CN 221464365U CN 202322904384 U CN202322904384 U CN 202322904384U CN 221464365 U CN221464365 U CN 221464365U
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- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000000498 cooling water Substances 0.000 claims description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 81
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Abstract
本实用新型涉及电厂节能技术领域，具体涉及一种用于直接空冷机组的冷却系统，包括：旁路排汽凝汽器与直接空冷机组的汽轮机低压缸的低压缸排汽管道连接；旁路排汽凝汽器适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出；汽轮机低压缸的低压缸排汽管道与空冷岛连接；空冷岛适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出；本申请通过增加旁路排汽凝汽器，旁路排汽凝汽器和空冷岛并联，旁路排汽凝汽器分流排汽，相当于增加了冷端的冷却面积以及冷却能力，降低直接空冷机组在夏季运行时的背压，提高直接空冷机组的经济性，降低直接空冷机组的能耗，保证直接空冷机组的出力效果，且成本较低。
The utility model relates to the technical field of energy conservation in power plants, and specifically to a cooling system for a direct air-cooled unit, comprising: a bypass exhaust condenser connected to a low-pressure cylinder exhaust pipe of a steam turbine low-pressure cylinder of the direct air-cooled unit; the bypass exhaust condenser is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate; the low-pressure cylinder exhaust pipe of the steam turbine low-pressure cylinder is connected to an air-cooled island; the air-cooled island is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate; the present application adds a bypass exhaust condenser, the bypass exhaust condenser and the air-cooled island are connected in parallel, and the bypass exhaust condenser shunts the exhaust steam, which is equivalent to increasing the cooling area and cooling capacity of the cold end, reducing the back pressure of the direct air-cooled unit when running in summer, improving the economy of the direct air-cooled unit, reducing the energy consumption of the direct air-cooled unit, ensuring the output effect of the direct air-cooled unit, and having a low cost.
Description
技术领域Technical Field
本实用新型涉及电厂节能技术领域，具体涉及一种用于直接空冷机组的冷却系统。The utility model relates to the technical field of energy saving in power plants, in particular to a cooling system for a direct air cooling unit.
背景技术Background technique
直接空冷机组在夏季运行时的背压较高，是直接空冷机组能耗较大和制约直接空冷机组出力的直接原因。目前解决的方式多为增设尖峰冷却装置，然而增设尖峰冷却装置的投资较大，在尖峰冷却装置的利用率较低时，投资回收期较长，成本较高。The high back pressure of direct air-cooling units during summer operation is the direct cause of their high energy consumption and the restriction of their output. The current solution is to add peak cooling devices. However, the investment in adding peak cooling devices is large. When the utilization rate of peak cooling devices is low, the investment recovery period is long and the cost is high.
实用新型内容Utility Model Content
因此，本实用新型要解决的技术问题在于克服采用增设尖峰冷却装置降低直接空冷机组的背压时，存在成本较高的缺陷。Therefore, the technical problem to be solved by the utility model is to overcome the defect of high cost when adding a peak cooling device to reduce the back pressure of a direct air-cooling unit.
为了克服上述缺陷，本实用新型提供一种用于直接空冷机组的冷却系统，包括：In order to overcome the above defects, the utility model provides a cooling system for a direct air cooling unit, comprising:
旁路排汽凝汽器，与直接空冷机组的汽轮机低压缸的低压缸排汽管道连接；所述旁路排汽凝汽器适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出；所述汽轮机低压缸的低压缸排汽管道与空冷岛连接；所述空冷岛适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出。The bypass exhaust condenser is connected to the low-pressure cylinder exhaust pipe of the steam turbine low-pressure cylinder of the direct air-cooled unit; the bypass exhaust condenser is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate; the low-pressure cylinder exhaust pipe of the steam turbine low-pressure cylinder is connected to the air-cooling island; the air-cooling island is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate.
可选地，所述旁路排汽凝汽器对汽轮机低压缸的排汽进行冷却的冷却水来自于辅机的辅机冷却水机力塔。Optionally, the cooling water used by the bypass exhaust condenser to cool the exhaust steam of the low-pressure cylinder of the steam turbine comes from the auxiliary cooling water power tower of the auxiliary machine.
可选地，所述辅机为调停机组。Optionally, the auxiliary machine is a regulation unit.
可选地，所述辅机冷却水机力塔设有进水管路和出水管路，在所述进水管路上依次设有辅机冷却水循环水进口阀门和辅机冷却水循环水泵，在所述出水管路上设有辅机冷却水循环水出口阀门；所述辅机冷却水循环水泵与辅机冷却水机力塔连接；Optionally, the auxiliary machine cooling water power tower is provided with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is provided with an auxiliary machine cooling water circulating water inlet valve and an auxiliary machine cooling water circulating water pump in sequence, and the water outlet pipeline is provided with an auxiliary machine cooling water circulating water outlet valve; the auxiliary machine cooling water circulating water pump is connected to the auxiliary machine cooling water power tower;
所述旁路排汽凝汽器的进水口适于连接至辅机冷却水循环水出口阀门和辅机冷却水机力塔之间的出水管路上；所述旁路排汽凝汽器的出水口适于连接至辅机冷却水循环水泵与辅机冷却水机力塔之间的进水管路上。The water inlet of the bypass exhaust condenser is suitable for connecting to the water outlet pipeline between the auxiliary machine cooling water circulating water outlet valve and the auxiliary machine cooling water power tower; the water outlet of the bypass exhaust condenser is suitable for connecting to the water inlet pipeline between the auxiliary machine cooling water circulating water pump and the auxiliary machine cooling water power tower.
可选地，在所述旁路排汽凝汽器的进水口设有辅机冷却水循环水旁路出口阀门。Optionally, an auxiliary machine cooling water circulating water bypass outlet valve is provided at the water inlet of the bypass exhaust condenser.
可选地，在所述旁路排汽凝汽器的出水口设有辅机冷却水循环水旁路进口阀门。Optionally, an auxiliary machine cooling water circulating water bypass inlet valve is provided at the water outlet of the bypass exhaust condenser.
可选地，在所述旁路排汽凝汽器与低压缸排汽管道连接的管路上设有排汽管道旁路阀门。Optionally, an exhaust pipe bypass valve is provided on the pipeline connecting the bypass exhaust condenser and the low-pressure cylinder exhaust pipe.
可选地，所述空冷岛的凝结水出口与热井连接。Optionally, the condensate outlet of the air-cooling island is connected to a hot well.
可选地，所述旁路排汽凝汽器的凝结水出口端与热井连接。Optionally, the condensate outlet end of the bypass exhaust condenser is connected to a hot well.
可选地，所述热井与凝结水泵连接。Optionally, the hot well is connected to a condensate pump.
本实用新型的上述技术方案相比现有技术具有以下优点：The above technical solution of the utility model has the following advantages compared with the prior art:
1.本实用新型提供的用于直接空冷机组的冷却系统，包括：旁路排汽凝汽器，与直接空冷机组的汽轮机低压缸的低压缸排汽管道连接；所述旁路排汽凝汽器适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出；所述汽轮机低压缸的低压缸排汽管道与空冷岛连接；所述空冷岛适于对汽轮机低压缸的排汽进行冷却，并将冷却后的凝结水排出；本申请采用上述技术方案，通过增加旁路排汽凝汽器，旁路排汽凝汽器和空冷岛并联，旁路排汽凝汽器分流排汽，以共同冷却直接空冷机组的汽轮机低压缸的排汽，相当于增加了冷端的冷却面积以及冷却能力，降低直接空冷机组在夏季运行时的背压，提高直接空冷机组的经济性，降低直接空冷机组的能耗，保证直接空冷机组的出力效果，且成本较低。1. The cooling system for a direct air-cooled unit provided by the utility model comprises: a bypass exhaust condenser connected to a low-pressure cylinder exhaust pipe of a steam turbine low-pressure cylinder of the direct air-cooled unit; the bypass exhaust condenser is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate; the low-pressure cylinder exhaust pipe of the steam turbine low-pressure cylinder is connected to an air-cooled island; the air-cooled island is suitable for cooling the exhaust steam of the steam turbine low-pressure cylinder and discharging the cooled condensate; the present application adopts the above technical scheme, by adding a bypass exhaust condenser, the bypass exhaust condenser and the air-cooled island are connected in parallel, the bypass exhaust condenser diverts the exhaust steam to jointly cool the exhaust steam of the steam turbine low-pressure cylinder of the direct air-cooled unit, which is equivalent to increasing the cooling area and cooling capacity of the cold end, reducing the back pressure of the direct air-cooled unit when operating in summer, improving the economy of the direct air-cooled unit, reducing the energy consumption of the direct air-cooled unit, ensuring the output effect of the direct air-cooled unit, and at a relatively low cost.
2.本实用新型所述旁路排汽凝汽器对汽轮机低压缸的排汽进行冷却的冷却水来自于辅机的辅机冷却水机力塔；所述辅机为调停机组；由于新能源装机容量日益增大，火电机组经常调停，因此，本申请技术方案通过利用闲置的调停机组的辅机冷却水机力塔，充分利用闲置资源，提高电厂设备的利用效率。2. The cooling water for cooling the exhaust steam of the low-pressure cylinder of the steam turbine by the bypass exhaust condenser of the utility model comes from the auxiliary cooling water power tower of the auxiliary machine; the auxiliary machine is a regulation unit; due to the increasing installed capacity of new energy, thermal power units are often regulated. Therefore, the technical solution of the present application makes full use of idle resources and improves the utilization efficiency of power plant equipment by utilizing the auxiliary cooling water power tower of the idle regulation unit.
3.本实用新型所述辅机冷却水机力塔设有进水管路和出水管路，在所述进水管路上依次设有辅机冷却水循环水进口阀门和辅机冷却水循环水泵，在所述出水管路上设有辅机冷却水循环水出口阀门；所述辅机冷却水循环水泵与辅机冷却水机力塔连接；所述旁路排汽凝汽器的进水口适于连接至辅机冷却水循环水出口阀门和辅机冷却水机力塔之间的出水管路上；所述旁路排汽凝汽器的出水口适于连接至辅机冷却水循环水泵与辅机冷却水机力塔之间的进水管路上；本申请采用上述技术方案，通过辅机冷却水循环水进口阀门和辅机冷却水循环水出口阀门方便断开辅机的冷却水循环；并且借用辅机冷却水循环水泵提高进入旁路排汽凝汽器中冷却水的循环效率，提高电厂设备的利用效率，节约成本。3. The auxiliary cooling water power tower of the utility model is provided with a water inlet pipeline and a water outlet pipeline, on which an auxiliary cooling water circulating water inlet valve and an auxiliary cooling water circulating water pump are sequentially arranged, and on the water outlet pipeline an auxiliary cooling water circulating water outlet valve is arranged; the auxiliary cooling water circulating water pump is connected to the auxiliary cooling water power tower; the water inlet of the bypass exhaust condenser is suitable for being connected to the water outlet pipeline between the auxiliary cooling water circulating water outlet valve and the auxiliary cooling water power tower; the water outlet of the bypass exhaust condenser is suitable for being connected to the water inlet pipeline between the auxiliary cooling water circulating water pump and the auxiliary cooling water power tower; the present application adopts the above-mentioned technical scheme, and conveniently disconnects the cooling water circulation of the auxiliary machine through the auxiliary cooling water circulating water inlet valve and the auxiliary cooling water circulating water outlet valve; and the auxiliary cooling water circulating water pump is used to improve the circulation efficiency of the cooling water entering the bypass exhaust condenser, thereby improving the utilization efficiency of the power plant equipment and saving costs.
4.本实用新型在所述旁路排汽凝汽器的进水口设有辅机冷却水循环水旁路出口阀门；本申请采用上述技术方案，方便接通或断开进入旁路排汽凝汽器的冷却水。4. The utility model provides an auxiliary machine cooling water circulating water bypass outlet valve at the water inlet of the bypass exhaust condenser; the application adopts the above technical solution to facilitate the connection or disconnection of the cooling water entering the bypass exhaust condenser.
5.本实用新型在所述旁路排汽凝汽器的出水口设有辅机冷却水循环水旁路进口阀门；本申请采用上述技术方案，方便接通或断开流出旁路排汽凝汽器的冷却水。5. The utility model provides an auxiliary machine cooling water circulating water bypass inlet valve at the water outlet of the bypass exhaust condenser; the application adopts the above technical solution to facilitate the connection or disconnection of the cooling water flowing out of the bypass exhaust condenser.
6.本实用新型在所述旁路排汽凝汽器与低压缸排汽管道连接的管路上设有排汽管道旁路阀门；本申请采用上述技术方案，通过排汽管道旁路阀门，方便接通或断开旁路排汽凝汽器与低压缸排汽管道的连接。6. The utility model provides an exhaust pipe bypass valve on the pipeline connecting the bypass exhaust condenser and the low-pressure cylinder exhaust pipe; the present application adopts the above technical solution, and conveniently connects or disconnects the connection between the bypass exhaust condenser and the low-pressure cylinder exhaust pipe through the exhaust pipe bypass valve.
7.本实用新型所述空冷岛的凝结水出口与热井连接；本申请采用上述技术方案，通过热井方便暂存空冷岛的凝结水。7. The condensate outlet of the air-cooling island described in the utility model is connected to the hot well; the present application adopts the above technical solution to facilitate the temporary storage of the condensate of the air-cooling island through the hot well.
8.本实用新型所述旁路排汽凝汽器的凝结水出口端与热井连接；本申请采用上述技术方案，旁路排汽凝汽器的凝结水和空冷岛的凝结水均暂存于热井中，提高设备利用率。8. The condensate outlet end of the bypass exhaust condenser described in the utility model is connected to the hot well; this application adopts the above technical solution, and the condensate of the bypass exhaust condenser and the condensate of the air-cooling island are temporarily stored in the hot well, thereby improving equipment utilization.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本实用新型具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
图1为本实用新型实施方式中提供的用于直接空冷机组的冷却系统的连接结构示意图。FIG1 is a schematic diagram of the connection structure of a cooling system for a direct air cooling unit provided in an embodiment of the utility model.
附图标记说明：Description of reference numerals:
1、汽轮机低压缸；2、低压缸排汽管道；3、排汽管道旁路阀门；4、空冷岛；5、热井；6、旁路排汽凝汽器；7、辅机冷却水机力塔；8、辅机冷却水循环水出口阀门；9、辅机冷却水循环水进口阀门；10、辅机冷却水循环水旁路出口阀门；11、辅机冷却水循环水旁路进口阀门；12、辅机冷却水循环水泵；13、凝结水泵。1. Steam turbine low-pressure cylinder; 2. Low-pressure cylinder exhaust pipe; 3. Exhaust pipe bypass valve; 4. Air-cooling island; 5. Hot well; 6. Bypass exhaust condenser; 7. Auxiliary machine cooling water power tower; 8. Auxiliary machine cooling water circulating water outlet valve; 9. Auxiliary machine cooling water circulating water inlet valve; 10. Auxiliary machine cooling water circulating water bypass outlet valve; 11. Auxiliary machine cooling water circulating water bypass inlet valve; 12. Auxiliary machine cooling water circulating water pump; 13. Condensate pump.
具体实施方式Detailed ways
下面将结合附图对本实用新型的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
在本实用新型的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实用新型中的具体含义。In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
此外，下面所描述的本实用新型不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
如图1所示的用于直接空冷机组的冷却系统的一种具体实施方式，包括：在现有直接空冷机组和辅机之间增设的旁路排汽凝汽器6。A specific implementation of a cooling system for a direct air-cooling unit as shown in FIG1 includes: a bypass exhaust condenser 6 added between the existing direct air-cooling unit and the auxiliary machine.
所述旁路排汽凝汽器6与直接空冷机组的汽轮机低压缸1的低压缸排汽管道2连接；所述旁路排汽凝汽器6适于对汽轮机低压缸1的排汽进行冷却，并将冷却后的凝结水排出；所述汽轮机低压缸1的低压缸排汽管道2与空冷岛4连接；所述空冷岛4适于对汽轮机低压缸1的排汽进行冷却，并将冷却后的凝结水排出。所述空冷岛4的凝结水出口与热井5连接。所述旁路排汽凝汽器6的凝结水出口端与热井5连接。所述热井5与凝结水泵13接。具体的，所述旁路排汽凝汽器6对汽轮机低压缸1的排汽进行冷却的冷却水来自于辅机的辅机冷却水机力塔7，即旁路排汽凝汽器6的热负荷通过辅机的冷却水冷却，升温后的循环水出水进入辅机冷却水机力塔7，进行冷却降温，完成热力循环。所述辅机为调停机组；由于新能源装机容量日益增大，火电机组经常调停，造成设备的闲置，所以所述调停机组可以为调停的火电机组。所述辅机冷却水机力塔7设有进水管路和出水管路，在所述进水管路上依次设有辅机冷却水循环水进口阀门9和辅机冷却水循环水泵12，在所述出水管路上设有辅机冷却水循环水出口阀门8；所述辅机冷却水循环水泵12与辅机冷却水机力塔7连接；所述旁路排汽凝汽器6的进水口适于连接至辅机冷却水循环水出口阀门8和辅机冷却水机力塔7之间的出水管路上；所述旁路排汽凝汽器6的出水口适于连接至辅机冷却水循环水泵12与辅机冷却水机力塔7之间的进水管路上。进一步的，在所述旁路排汽凝汽器6的进水口设有辅机冷却水循环水旁路出口阀门10。在所述旁路排汽凝汽器6的出水口设有辅机冷却水循环水旁路进口阀门11。在所述旁路排汽凝汽器6与低压缸排汽管道2连接的管路上设有排汽管道旁路阀门3。The bypass exhaust condenser 6 is connected to the low-pressure cylinder exhaust pipe 2 of the low-pressure cylinder 1 of the steam turbine of the direct air-cooled unit; the bypass exhaust condenser 6 is suitable for cooling the exhaust steam of the low-pressure cylinder 1 of the steam turbine and discharging the cooled condensate; the low-pressure cylinder exhaust pipe 2 of the low-pressure cylinder 1 of the steam turbine is connected to the air-cooling island 4; the air-cooling island 4 is suitable for cooling the exhaust steam of the low-pressure cylinder 1 of the steam turbine and discharging the cooled condensate. The condensate outlet of the air-cooling island 4 is connected to the hot well 5. The condensate outlet end of the bypass exhaust condenser 6 is connected to the hot well 5. The hot well 5 is connected to the condensate pump 13. Specifically, the cooling water used by the bypass exhaust condenser 6 to cool the exhaust steam of the low-pressure cylinder 1 of the steam turbine comes from the auxiliary cooling water mechanical tower 7 of the auxiliary machine, that is, the heat load of the bypass exhaust condenser 6 is cooled by the cooling water of the auxiliary machine, and the heated circulating water outlet enters the auxiliary cooling water mechanical tower 7 for cooling and temperature reduction to complete the thermal cycle. The auxiliary machine is a regulation unit; due to the increasing installed capacity of new energy, thermal power units are often regulated, resulting in idle equipment, so the regulation unit can be a regulated thermal power unit. The auxiliary cooling water power tower 7 is provided with an inlet pipeline and an outlet pipeline, and an auxiliary cooling water circulating water inlet valve 9 and an auxiliary cooling water circulating water pump 12 are provided in sequence on the inlet pipeline, and an auxiliary cooling water circulating water outlet valve 8 is provided on the outlet pipeline; the auxiliary cooling water circulating water pump 12 is connected to the auxiliary cooling water power tower 7; the water inlet of the bypass exhaust condenser 6 is suitable for connecting to the outlet pipeline between the auxiliary cooling water circulating water outlet valve 8 and the auxiliary cooling water power tower 7; the water outlet of the bypass exhaust condenser 6 is suitable for connecting to the water inlet pipeline between the auxiliary cooling water circulating water pump 12 and the auxiliary cooling water power tower 7. Further, an auxiliary cooling water circulating water bypass outlet valve 10 is provided at the water inlet of the bypass exhaust condenser 6. An auxiliary cooling water circulating water bypass inlet valve 11 is provided at the water outlet of the bypass exhaust condenser 6. An exhaust pipe bypass valve 3 is provided on the pipeline connecting the bypass exhaust condenser 6 and the low-pressure cylinder exhaust pipe 2.
本申请所述用于直接空冷机组的冷却系统的主要工作过程简述如下：The main working process of the cooling system for the direct air cooling unit described in this application is briefly described as follows:
当某台机组调停，退出运行，即调停机组退出运行。关闭辅机冷却水循环水出口阀门8和辅机冷却水循环水进口阀门9；打开辅机冷却水循环水旁路出口阀门10和辅机冷却水循环水旁路进口阀门11，启动辅机冷却水循环水泵12，启动辅机冷却水机力塔7。When a unit is shut down and stops running, the shut down unit will stop running. Close the auxiliary cooling water circulating water outlet valve 8 and the auxiliary cooling water circulating water inlet valve 9; open the auxiliary cooling water circulating water bypass outlet valve 10 and the auxiliary cooling water circulating water bypass inlet valve 11, start the auxiliary cooling water circulating water pump 12, and start the auxiliary cooling water power tower 7.
开启运行直接空冷机组，打开排汽管道旁路阀门3，则汽轮机低压缸1排汽的分流蒸汽进入旁路排汽凝汽器6，蒸汽冷凝水进入热井5。Start the direct air-cooling unit and open the exhaust pipe bypass valve 3. The diverted steam from the exhaust of the low-pressure cylinder 1 of the steam turbine enters the bypass exhaust condenser 6, and the steam condensate enters the hot well 5.
辅机冷却水机力塔7的冷却水进入旁路排汽凝汽器6，吸收排汽散热后，循环水进入辅机冷却水机力塔7中冷却，完成热力循环。The cooling water of the auxiliary machine cooling water power tower 7 enters the bypass exhaust condenser 6, and after absorbing the exhaust steam heat, the circulating water enters the auxiliary machine cooling water power tower 7 for cooling, thus completing the thermal cycle.
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其他不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本实用新型创造的保护范围之中。Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.
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