Power plant water cooling system
By designing a power plant water cooling system that utilizes waste heat refrigeration devices and water spray components, the problems of water resource consumption and fan power consumption in the prior art are solved, efficient utilization of water resources and reuse of waste gas heat, and the economic benefits of the system are improved.
Patent Information
- Application Number
- CN202421772893.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing power plant circulation cooling towers have problems such as large water resources consumption and high power consumption of fans. Especially when the power plant is high or the weather is hot, the water consumption and power consumption will further increase.
A power plant water cooling system is designed, including condensers, cooling towers, waste heat refrigeration devices, water spray components and heat dissipation parts. The waste heat refrigeration device uses the heat of the exhaust gas to refrigerate the water in the cooling tower. The refrigerated water dissipates heat through the water spray assembly. The entire process consumes almost no water resources, and uses the heat of the exhaust gas to reuse it, avoiding the heat dissipation method of the fan for power consumption.
The power plant water cooling system has achieved the effect of almost no water resources consumption, and at the same time, it uses waste gas heat for reuse, reducing electricity consumption and improving economic benefits.
Smart Images
Figure CN222938118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling, in particular to a water cooling system for a power plant. Background Art
[0002] During the production process of thermal power plants or nuclear power plants, it is necessary to cool the steam turbines by circulating water. The existing circulating water cooling systems mainly include condensers, circulating water pumps, cooling towers and water tanks. Among them, the cooling tower is a key structure of the circulating water cooling system, and its cooling performance directly affects the production operation of the power plant.
[0003] At present, the general circulating cooling towers in power plants are generally open at the top, and large fans are installed at the openings. The fans blow out the evaporated water to cool the air, but there are two problems in this way:
[0004] 1. There is evaporation loss of cooling water, and it is necessary to make up water. When the power of the power plant is large or the weather is hot, the water consumption is large;
[0005] 2. The fans run for a long time, consuming a large amount of electric energy. When the power of the power plant is large or the weather is hot, the energy consumption of the fans will further increase. Summary of the Utility Model
[0006] Embodiments of the utility model provide a water cooling system for a power plant to solve the technical problem of large water resource consumption in related technologies.
[0007] Embodiments of the utility model provide a water cooling system for a power plant, including:
[0008] A condenser for cooling the steam circuit of the steam turbine of the power plant;
[0009] A cooling tower, inside which there are heat dissipation components and a water spraying assembly. The heat dissipation components are connected to the condenser to form a water circulation circuit, and the water spraying assembly is used to spray water on the heat dissipation components;
[0010] A waste heat refrigeration device, which includes an exhaust gas collection component and a refrigeration component. The air inlet of the exhaust gas collection component is connected to the exhaust gas outlet of the power plant boiler, the water inlet of the refrigeration component is connected to the water outlet below the cooling tower, and the water outlet is connected to the water spraying assembly.
[0011] In some embodiments, the water cooling system for a power plant further includes:
[0012] A gas filtering device provided between the exhaust gas collection component and the power plant boiler.
[0013] In some embodiments, the water cooling system for a power plant further includes:
[0014] A water tank, whose water inlet is connected to the water outlet of the water circulation of the condenser, and the water outlet is connected to the water inlet of the heat dissipation component.
[0015] In some embodiments, the power plant water cooling system further includes:
[0016] A first circulation water pump, which is arranged on the pipeline between the water tank and the heat dissipation component.
[0017] In some embodiments, regulating valves are provided on the pipeline between the condenser and the heat dissipation component and on the pipeline between the heat dissipation component and the water tank.
[0018] In some embodiments, the power plant water cooling system further includes:
[0019] A second circulation water pump, which is arranged on the pipeline between the refrigeration component and the water spray component.
[0020] In some embodiments, temperature monitoring components are provided on the water outlet pipeline of the heat dissipation component and on the water outlet pipeline of the waste heat refrigeration device.
[0021] In some embodiments, the heat dissipation component is a serpentine heat dissipation pipe.
[0022] In some embodiments, heat dissipation fins are further provided on the surface of the serpentine heat dissipation pipe.
[0023] In some embodiments, the serpentine heat dissipation pipe is made of stainless steel pipe.
[0024] The beneficial effects brought by the technical solution provided by the present utility model include:
[0025] The embodiment of the present utility model provides a power plant water cooling system, which is provided with a waste heat refrigeration device. The waste heat refrigeration device includes an exhaust gas collection component and a refrigeration component. The exhaust gas collection component collects exhaust gas, and the refrigeration component uses the heat of the exhaust gas to refrigerate the water in the cooling tower. The refrigerated water sprays water on the heat dissipation component through the water spray component for heat dissipation. The water in the heat dissipation component is cooled and then returns to the condenser to cool the steam turbine of the power plant. Almost no water resources are consumed during the whole process. At the same time, the reuse of the exhaust gas heat is realized, and no fan is used for power-consuming heat dissipation, so the economic benefit is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0027] Figure 1Schematic diagram of a power plant water cooling system provided by an embodiment of the present utility model;
[0028] In the figure: 1, condenser; 2, cooling tower; 21, heat dissipation member; 22, water spray assembly; 23, heat sink; 3, waste heat refrigeration device; 31, exhaust gas collection assembly; 32, refrigeration assembly; 4, power plant boiler; 5, gas filtration device; 6, water tank; 7, first circulation water pump; 8, regulating valve; 9, second circulation water pump; 10, temperature monitoring assembly. Specific embodiments
[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] The embodiment of the present utility model provides a power plant water cooling system, which can solve the technical problem of large water resource consumption in related technologies.
[0031] See Figure 1 As shown, a power plant water cooling system includes: a condenser 1, a cooling tower 2, and a waste heat refrigeration device 3.
[0032] The condenser 1 is used to cool the steam circuit of the steam turbine of the power plant. The cooling tower 2 is internally provided with a heat dissipation member 21 and a water spray assembly 22. The heat dissipation member 21 is connected to the condenser 1 to form a water circulation circuit. The water in the water circulation circuit dissipates heat in the heat dissipation member 21 and absorbs heat in the condenser 1 to cool the steam circuit of the steam turbine of the power plant. The water spray assembly 22 is used to spray water onto the heat dissipation member 21.
[0033] The waste heat refrigeration device 3 includes an exhaust gas collection assembly 31 and a refrigeration assembly 32. The air inlet of the exhaust gas collection assembly 31 is connected to the exhaust gas outlet of the power plant boiler 4. The water inlet of the refrigeration assembly 32 is connected to the water outlet below the cooling tower 2, and the water outlet is connected to the water spray assembly 22.
[0034] The working principle of the power plant water cooling system according to the embodiment of the present utility model is as follows:
[0035] After the condenser 1 cools the steam circuit of the steam turbine in the power plant, hot water is discharged. The hot water is then transported through a pipeline to the heat dissipation member 21 inside the cooling tower 2. The hot water flows within the heat dissipation member 21, and the water spraying assembly 22 inside the cooling tower 2 sprays water onto the heat dissipation member 21 to accelerate heat dissipation. After heat dissipation, the water returns to the condenser 1 to continue cooling the steam circuit of the steam turbine in the power plant.
[0036] After the water sprayed by the water spraying assembly 22 absorbs the heat of the hot water in the heat dissipation member 21, part of it forms steam and condenses on the inner wall of the cooling tower 2, and part of it drips onto the bottom of the cooling tower 2. Finally, they all gather at the bottom of the cooling tower 2. The gathered water is then transported through a pipeline to the refrigeration assembly 32 of the waste heat refrigeration device 3. The waste gas collection assembly 31 of the waste heat refrigeration device 3 collects the waste gas of the power plant boiler 4. The refrigeration assembly 32 uses the heat of the waste gas collected by the waste gas collection assembly 31 to refrigerate the water from the cooling tower 2. After refrigeration, the water is transported to the water spraying assembly 22, and the water spraying assembly 22 repeats spraying water onto the heat dissipation member 21.
[0037] The power plant water cooling system of the embodiment of the present utility model is provided with a waste heat refrigeration device 3. The waste heat refrigeration device 3 includes a waste gas collection assembly 31 and a refrigeration assembly 32. The waste gas collection assembly 31 collects waste gas, and the refrigeration assembly 32 uses the heat of the waste gas to refrigerate the water in the cooling tower 2. The refrigerated water sprays water onto the heat dissipation member 21 through the water spraying assembly 22 for heat dissipation. The water in the heat dissipation member 21 is cooled and then returns to the condenser 1 to cool the steam circuit of the steam turbine in the power plant again. Almost no water resources are consumed in the whole process. At the same time, the repeated utilization of waste gas heat is realized, and no fan is used for power-consuming heat dissipation, so the economic benefit is good.
[0038] As an optional implementation manner, referring to Figure 1 As shown, the power plant water cooling system of the embodiment of the present utility model further includes: a gas filtering device 5. The gas filtering device 5 is arranged between the waste gas collection assembly 31 and the power plant boiler 4. The gas filtering device 5 can purify the waste gas entering the waste gas collection assembly 31 to avoid damage to the waste gas collection assembly 31 caused by solid impurities.
[0039] As an optional implementation manner, referring to Figure 1 As shown, the power plant water cooling system of the embodiment of the present utility model further includes: a water tank 6. The water inlet of the water tank 6 is connected to the water circulation outlet of the condenser 1, and the water outlet is connected to the water inlet of the heat dissipation member 21. The water tank 6 can temporarily store the hot water to be cooled from the condenser 1.
[0040] As an optional implementation manner, referring to Figure 1As shown in the figure, the power plant water cooling system according to the embodiment of the present utility model further includes: a first circulation water pump 7, which is arranged on the pipeline between the water tank 6 and the condenser 1, and the first circulation water pump 7 provides the power for the water circulation between the condenser 1 and the heat dissipation member 21.
[0041] As an alternative implementation, refer to Figure 1 As shown in the figure, regulating valves 8 are provided on the pipeline between the condenser 1 and the heat dissipation member 21 and on the pipeline between the heat dissipation member 21 and the water tank 6, and the regulating valves 8 are convenient for adjusting the water flow rate.
[0042] As an alternative implementation, refer to Figure 1 As shown in the figure, the power plant water cooling system according to the embodiment of the present utility model further includes: a second circulation water pump 9, which is arranged on the pipeline between the waste heat refrigeration device 3 and the water spray assembly 22, and the second circulation water pump 9 provides the power for the water circulation and the power for the water spray.
[0043] As an alternative implementation, refer to Figure 1 As shown in the figure, temperature monitoring components 10 are provided on the outlet pipeline of the heat dissipation member 21 and on the outlet pipeline of the waste heat refrigeration device 3, and the temperature monitoring components 10 are convenient for the staff to monitor the temperature in real time and understand the operation condition of the cooling water system.
[0044] As an alternative implementation, refer to Figure 1 As shown in the figure, the heat dissipation member 21 is a serpentine heat dissipation pipe, which is convenient for heat dissipation. Further, heat dissipation fins 23 are further provided on the surface of the serpentine heat dissipation pipe, which is more conducive to heat dissipation. Preferably, the serpentine heat dissipation pipe is made of a stainless steel pipe, which has good rigidity and corrosion resistance.
[0045] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation to the present utility model. Unless otherwise clearly specified and defined, 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0046] It should be noted that in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.
[0047] The above are only specific embodiments of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features of the present utility model.
Claims
1. A water cooling system for a power plant, characterized in that: include: A condenser (1) for cooling the steam circuit of a steam turbine of a power plant; A cooling tower (2) having a heat sink (21) and a water spray assembly (22) disposed therein, wherein the heat sink (21) is connected to the condenser (1) to form a water circulation loop, and the water spray assembly (22) is used to spray water onto the heat sink (21); A waste heat refrigeration device (3) comprises a waste gas collection component (31) and a refrigeration component (32), wherein the air inlet of the waste gas collection component (31) is connected to the waste gas outlet of the power plant boiler (4), the water inlet of the refrigeration component (32) is connected to the water outlet below the cooling tower (2), and the water outlet is connected to the water spray component (22).
2. A water cooling system for a power plant according to claim 1, characterized in that: Also includes: A gas filtering device (5) is arranged between the exhaust gas collecting component (31) and the power plant boiler (4).
3. A water cooling system for a power plant according to claim 1, characterized in that: Also includes: A water tank (6) has a water inlet connected to a water outlet of a water circulation of the condenser (1), and a water outlet connected to a water inlet of the heat sink (21).
4. A water cooling system for a power plant as claimed in claim 3, characterized in that: Also includes: A first circulating water pump (7) is arranged on the pipeline between the water tank (6) and the heat sink (21).
5. A water cooling system for a power plant as claimed in claim 3, characterized in that: A regulating valve (8) is provided on the pipeline between the condenser (1) and the heat sink (21), and on the pipeline between the heat sink (21) and the water tank (6).
6. A water cooling system for a power plant according to claim 1, characterized in that: Also includes: A second circulating water pump (9) is provided on the pipeline between the refrigeration component (32) and the water spray component (22).
7. A water cooling system for a power plant according to claim 1, characterized in that: A temperature monitoring component (10) is provided on the water outlet pipeline of the heat dissipation element (21) and on the water outlet pipeline of the waste heat refrigeration device (3).
8. A water cooling system for a power plant according to claim 1, characterized in that: The heat sink (21) is a serpentine heat pipe.
9. A water cooling system for a power plant as claimed in claim 8, characterized in that: The surface of the serpentine heat dissipation pipe is also provided with heat dissipation fins (23).
10. A water cooling system for a power plant according to claim 8, characterized in that: The serpentine heat dissipation pipe is made of stainless steel pipe.