Thermal power plant cooling water system and cooling water adjusting method
A technology of cooling water system and adjustment method, which is applied in cooling fluid circulation devices, household refrigeration devices, lighting and heating equipment, etc., can solve the problem of inability to realize stepless adjustment of circulating cooling water flow in proportion to heat load, and achieve energy saving and consumption reduction. The effect of significant performance, heat load matching, and low maintenance costs
Pending Publication Date: 2021-08-20
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Its advantage is to provide a correct and economical operation mode through the table or human-machine interface, but this method only realizes the stepwise adjustment function of the circulating water flow, and cannot realize the stepwise adjustment range of the circulating cooling water flow according to the heat load ratio of multiple units Stepless adjustment within
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[0028] Attached below figure 1 , The present invention will be further described in detail through the embodiment of two units configured with four circulating water pumps. The following embodiments are explanations of the present invention, and the present invention is not limited to the following embodiments.
[0029] figure 1 The structure of an embodiment of the thermal power plant cooling water system of the present invention is shown. Such as figure 1 As shown, the cooling water system mainly includes a water pump unit 2, including four water pumps 21, 22, 23 and 24, an inlet pipeline system 1 connected to the inlet of the water pump unit 2, and an outlet pipeline system 3 connected to the outlet of the water pump unit 2, The outlet pipeline system 3 collects the outlet water from the water pump group 2 and then enters the adjustable water distribution device 4 , and the adjustable water distribution device 4 distributes the cooling water to the cooler 51 and the coole...
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The invention discloses a thermal power plant cooling water system and a cooling water adjusting method. The thermal power plant cooling water system comprises a water pump set, a water inlet pipeline system connected to an inlet of the water pump set and a water outlet pipeline system connected to an outlet of the water pump set, and the water outlet pipeline system collects water of the water pump set and then accesses an adjustable water distribution device, and is used for adjusting the flow of cooling water entering a cooler. The cooling water adjusting method of the thermal power plant cooling water system comprises the following steps that S1, the cooling water flow is determined according to the optimal vacuum of a unit; S2, the number of started water pumps is determined according to the cooling water flow determined in the step S1; and S3, the amount of cooling water entering the cooler is adjusted through the adjustable water distribution device. Continuous stepped adjustment from the maximum flow to the minimum flow of the cooling water is achieved, adjustment can be conducted according to the cooler thermal load in any proportion, the cooling water flow is better matched with the cooler thermal load, the energy-saving and consumption-reducing effects are remarkable, equipment operation is reliable, and the maintenance cost is low.
Description
technical field [0001] The invention relates to the technical field of cold end optimization of a thermal power plant, in particular to a cooling water system and a cooling water adjustment method of a thermal power plant. Background technique [0002] The circulating cooling water system of a thermal power plant usually adopts a unit arrangement. For example, the cooling water of a 300MW class generator set usually uses two parallel-connected 50% mass flow circulating pumps, and the 1000MW class uses three parallel-connected 35% capacity circulating pumps. Others such as Auxiliary circulation pump usually adopts two parallel circulation pumps with 50% capacity. In actual operation, in order to make the unit achieve the best energy efficiency level in different seasons and under different unit loads, the circulating water flow needs to be adjusted accordingly to maintain the unit can operate under the "optimum vacuum", that is, the unit back pressure The best balance point ...
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IPC IPC(8): F25D17/02F25D29/00
CPCF25D17/02F25D29/00
Inventor 庞乐赵玉柱邴汉昆吴峥峰梁绪
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD