Power station cooling water circulation system

Abstract

The utility model provides a power station cooling water circulation system. The power station cooling water circulation system comprises a water supply pool which is internally used for containing cooling water; the cooling systems are used for being in one-to-one correspondence with the generator sets, and each cooling system comprises a cooling assembly, a circulating pump set, a detection assembly and a valve assembly; the cooling assemblies are used for cooling the corresponding generator sets; the circulating pump set comprises at least two water pumps, and the water pumps are arranged on the cooling assembly. Every two adjacent cooling assemblies are connected through a connecting pipe. The detection assembly is used for detecting whether the water pumps operate normally or not, and the valve assembly is arranged on the cooling assembly and used for controlling one of the normally-operating water pumps to communicate with the cooling assembly so as to supply water to the cooling assembly. According to the power station cooling water circulation system, each generator set is provided with three or more water pumps used for supplying cooling water, generator set shutdown caused by water pump faults can be reduced, and the generating capacity of the generator sets is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of cooling water circulation and water supply, and in particular to a cooling water circulation system for a power station. Background Art

[0002] The power station generator sets will generate high temperatures when running, and they need to be cooled to ensure normal operation.

[0003] At present, the cooling method of the generator set is to cool it by circulating cooling water. The cooling water circulation system of the power station is usually equipped with a water pump, a cooling component, a circulation pipeline and a cooling water tank. The cooling water in the cooling water tank is extracted by the water pump and transported to the cooling component along the circulation pipeline to cool the generator set. The tail water discharged by the cooling component continues to return to the cooling water tank along the circulation pipeline and then circulates to the water pump, and the cycle is repeated.

[0004] As the failure rate of the water pump motor increases with long-term operation, the water pump motor bearing temperature may be too high and damaged, the motor may burn out, etc., which requires a long time to repair, causing the generator set to shut down and reducing power generation. Utility Model Content

[0005] The present application provides a cooling water circulation system for a power station, which is used to solve the problem that a water pump failure in the cooling water circulation system easily causes a generator set to shut down, thereby reducing power generation.

[0006] The present application provides a cooling water circulation system for a power station, comprising a water supply tank, in which cooling water is arranged; at least two cooling systems, the cooling systems are used to correspond to the generator sets one by one, and each of the cooling systems comprises a cooling component, a circulating pump group, a detection component and a valve component; the cooling component is used to cool the corresponding generator set; the circulating pump group comprises at least two water pumps, and the water pumps are both arranged on the cooling component; two adjacent cooling components are connected by a connecting pipe, and a first valve is arranged on the connecting pipe; the detection component is used to detect whether each of the water pumps is operating normally, the valve component is arranged on the cooling component, and the valve component is used to control one of the water pumps operating normally to communicate with the cooling component to supply water to the cooling component; when each of the water pumps in the cooling component is not operating normally, the first valve controls at least one of the water pumps in the cooling component adjacent to the cooling component to communicate with the cooling component in the water pump that is not operating normally, so as to supply water to the cooling component in the water pump that is not operating normally.

[0007] As an optional embodiment, the detection component includes: a plurality of water outlet valves, connected one-to-one to the water outlet end of each of the water pumps; a plurality of water inlet valves, connected one-to-one to the water inlet end of each of the water pumps; a plurality of pressure gauges, connected one-to-one to each of the water outlet valves and the water inlet valves, the pressure gauges being used to detect the pressure at the water outlet end and the water inlet end of each of the water pumps to determine whether the water pumps are operating normally.

[0008] As an optional embodiment, the valve assembly is connected to the water pump in a one-to-one correspondence to form a water pump control structure, and a water pump control structure in one of two adjacent cooling assemblies is connected to a water pump control structure in the other one through the connecting pipe.

[0009] As an optional embodiment, the valve assembly includes: a check valve and a second valve connected to the outlet meter valve, the second valve, the check valve, the outlet meter valve and the water outlet end of the water pump are connected in sequence; a third valve connected to the inlet meter valve, the third valve, the inlet meter valve and the water inlet end of the water pump are connected in sequence; when the water pumps in the same cooling system are at least partially operating normally, the first valve is closed, the second valve and the third valve corresponding to one of the normally operating water pumps are opened, and the second valve and the third valve corresponding to the remaining normally operating water pumps or the non-normally operating water pumps are closed; when the water pumps in the same cooling system are not operating normally, the first valve is opened, the second valve corresponding to the water pump connected to one end of the connecting pipe in the cooling system where the water pumps are not operating normally is opened, and the second valve and the third valve corresponding to the water pump in another cooling system connected to the other end of the connecting pipe are opened.

[0010] As an optional implementation, the third valve is also connected to a water pump filter, and the water pump filter is located below the water supply pool.

[0011] As an optional embodiment, the cooling assembly includes a stator air cooler and a bearing cooler, the cooling water inlet of the circulating pump group is connected to the water outlet of the water supply tank through a pipe, and the cooling water outlet of the circulating pump group is respectively connected to the cooling water inlets of the stator air cooler and the bearing cooler through pipes; the cooling water outlets of the stator air cooler and the bearing cooler are respectively connected to the water inlet of the water supply tank through pipes.

[0012] As an optional implementation, the cooling water inlet and the cooling water outlet of the stator air cooler and the bearing cooler are both connected to cooling assembly valves.

[0013] As an optional embodiment, the cooling system also includes a tail water cooling device, the cooling water inlet of the tail water cooling device is connected to the cooling water outlets of the stator air cooler and the bearing cooler through pipes, and the cooling water outlet of the tail water cooling device is connected to the water inlet of the water supply tank through a pipe. The tail water cooling device is used to cool the cooling water discharged from the cooling component.

[0014] As an optional implementation, a liquid level detection component for detecting the cooling water level is provided in the water supply tank.

[0015] As an optional embodiment, the water supply tank also has a water storage port and a drainage port, the water storage port is used to connect with a water source; the drainage port is used to discharge the cooling water in the water supply tank; the water storage port is connected to a water supply tank water inlet valve; the drainage port is connected to a water supply tank drainage valve.

[0016] The present application provides a power station cooling water circulation system, which connects a connecting pipe between the cooling components of two adjacent cooling systems and controls the connectivity of the two cooling components through a first valve, which is equivalent to connecting one of the water pumps corresponding to any one of the two connected cooling components in parallel to the other cooling component. Without adding an additional water pump, each cooling component can be equipped with an additional standby pump capable of supplying water. In the process of using circulating cooling water to cool the generator set, each generator set has three or more water pumps for supplying cooling water, thereby reducing the generator set shutdown caused by water pump failure and ensuring the power generation of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 A schematic diagram of the structure of a cooling water circulation system for a power station provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 An enlarged view of the internal structure of the dashed box.

[0020] Description of reference numerals:

[0021] 100- water supply pool;

[0022] 110-Liquid level detection component;

[0023] 120-water supply tank inlet valve;

[0024] 130-Water supply tank drain valve;

[0025] 200-Cooling system;

[0026] 210-cooling assembly; 211-stator air cooler; 212-bearing cooler; 213-cooling assembly valve;

[0027] 220-circulation pump group; 221-water pump;

[0028] 230-detection component; 231-water outlet valve; 232-water inlet valve; 233-pressure gauge;

[0029] 240-valve assembly; 241-check valve; 242-second valve; 243-third valve; 244-water pump filter;

[0030] 250-Tail water cooling device;

[0031] 300 - connecting pipe; 310 - first valve.

[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] In this application, unless otherwise clearly specified and limited, the term "connection" and other terms 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0036] As can be seen from the background technology, the mechanical friction loss generated at the bearing when the power station generator set is running will be accumulated in the bearing in the form of heat energy. Since the bearing is immersed in turbine oil, the temperature increase will seriously affect the life of the bearing and the safety of the unit, and accelerate the deterioration of the oil. Therefore, it is necessary to cool the generator set. At present, the cooling method of the generator set is to cool it by circulating cooling water. The cooling water circulation system of the power station is usually equipped with a water pump, a cooling component, a circulation pipeline and a cooling water tank. The cooling water in the cooling water tank is extracted by a water pump and transported to the cooling component along the circulation pipeline to cool the generator set. The tail water discharged by the cooling component continues to return to the cooling water tank along the circulation pipeline, and then circulates to the water pump, and the cycle is repeated.

[0037] The failure rate of the water pump motor will increase when it is running for a long time, and the water pump motor bearing temperature is too high and damaged, the motor is burned, etc., which requires a long time to repair. When the cooling water pumps corresponding to a generator set are out of service, the interruption of cooling water supply will affect the cooling effect of the generator set. The excessive temperature of the generator set bearing is prone to cause bearing burnout accidents, which will cause the generator set to shut down and reduce power generation.

[0038] In order to solve the above problems, the present application provides a cooling water circulation system for a power station. By connecting a connecting pipe between the cooling components of two adjacent cooling systems and setting a first valve on the connecting pipe to control the connectivity between the two cooling components, each cooling component can be equipped with a standby pump that can supply water without adding an additional water pump. In the process of using circulating cooling water to cool the generator set, each generator set has three or more water pumps for supplying cooling water, thereby reducing the generator set shutdown caused by water pump failure and ensuring the power generation of the generator.

[0039] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0040] Reference below Figure 1-Figure 2 A power station cooling water circulation system provided in an embodiment of the present application is described in detail.

[0041] Figure 1 A schematic structural diagram of a power station cooling water circulation system provided in an embodiment of the present application.

[0042] Combination Figure 1As shown, the present application provides a cooling water circulation system for a power station, including a water supply tank 100, in which cooling water is set; at least two cooling systems 200, the cooling systems 200 are used to correspond to the generator sets one by one, and each cooling system 200 includes a cooling component 210, a circulating pump group 220, a detection component 230 and a valve component 240; the cooling component 210 is used to cool the corresponding generator set; the circulating pump group 220 includes at least two water pumps 221, and the water pumps 221 are all set on the cooling component 210; two adjacent cooling components 210 are connected by a connecting pipe 300, and the connecting pipe 300 is provided with a first Valve 310; the detection component 230 is used to detect whether each water pump 221 is operating normally, and the valve component 240 is set on the cooling component 210. The valve component 240 is used to control one of the normally operating water pumps 221 to be connected to the cooling component 210 to supply water to the cooling component 210; when the water pumps 221 in the cooling component 210 are not operating normally, the first valve 310 controls at least one water pump 221 in the cooling component 210 adjacent to the cooling component 210 to be connected to the cooling component 210 in the water pump 221 that is not operating normally, so as to supply water to the cooling component 210 in the water pump 221 that is not operating normally.

[0043] When in use, the circulating pump group 220, the cooling assembly 210 and the water supply tank 100 are connected in series to form a closed loop for circulating cooling water, wherein the water pumps 221 in the circulating pump group 220 are connected in parallel with each other. Through the connecting pipe 300, one of the water pumps 221 corresponding to one of the two connected cooling assemblies 210 is connected in parallel with the water pump 221 corresponding to the other cooling assembly 210.

[0044] Figure 2 for Figure 1 A magnified view of the internal structure of the dashed box. Figure 2 As shown, in some embodiments, the detection component 230 includes: a plurality of outlet valves 231, which are connected one-to-one to the water outlet end of each water pump 221; a plurality of water inlet valves 232, which are connected one-to-one to the water inlet end of each water pump 221; and a plurality of pressure gauges 233, which are connected one-to-one to each water outlet valve 231 and water inlet valve 232, and the pressure gauges 233 are used to detect the pressure at the water outlet end and the water inlet end of each water pump 221 to determine whether the water pump 221 is operating normally.

[0045] When in use, the detection component 230 corresponding to each water pump 221 detects the pressure of the water outlet end and the water inlet end of the water pump 221 in real time. When an abnormal pipeline pressure is detected during the operation of the water pump 221, a signal is sent to the controller to determine whether the water pump 221 is in a normal operating state, and when the water pump 221 is not operating normally, the valve component 240 is controlled to change the opening and closing state to realize the switching of the water pump 221.

[0046] Combination Figure 1 and Figure 2 As shown, in some embodiments, the valve assembly 240 is connected to the water pump 221 in a one-to-one correspondence to form a water pump control structure, and a water pump control structure in one of two adjacent cooling assemblies 210 is connected to a water pump control structure in the other through a connecting pipe 300.

[0047] The valve assembly 240 includes: a check valve 241 and a second valve 242 connected to the water outlet meter valve 231, the second valve 242, the check valve 241, the water outlet meter valve 231 and the water outlet end of the water pump 221 are connected in sequence; a third valve 243 connected to the water inlet meter valve 232, the third valve 243, the water inlet meter valve 232 and the water inlet end of the water pump 221 are connected in sequence; when the water pumps 221 in the same cooling system 200 are at least partially operating normally, the first valve 310 is closed, and the second valve 242 corresponding to one of the water pumps 221 operating normally is closed. , and the third valve 243 is opened, and the second valve 242 and the third valve 243 corresponding to the remaining water pumps 221 that are operating normally or the water pumps 221 that are not operating normally are closed; when the water pumps 221 in the same cooling system 200 are not operating normally, the first valve 310 is opened, the second valve 242 corresponding to the water pump 221 connected to one end of the connecting pipe 300 in the cooling system 200 where the water pumps 221 are not operating normally is opened, and the second valve 242 and the third valve 243 corresponding to the water pump 221 in another cooling system 200 connected to the other end of the connecting pipe 300 are opened.

[0048] The first valve 310 , the second valve 242 and the third valve 243 may be normally open valves.

[0049] When in use, under normal circumstances, all water pumps 221 in the same cooling system 200 are periodically switched to operate one by one to supply water. When only some of the water pumps 221 in the same cooling system 200 can operate normally, all the water pumps 221 that can operate normally are periodically switched to operate one by one to supply water; wherein, when only one of the water pumps 221 in the same cooling system 200 can operate normally, the water pump 221 that can operate normally is operated to supply water.

[0050] In the above-mentioned several cases, during the water supply process, the first valve 310 is closed, the check valve 241, the second valve 242 and the third valve 243 corresponding to the normally operating water pump 221 are opened, and the check valve 241, the second valve 242 and the third valve 243 corresponding to other normally operating water pumps 221 or non-normally operating water pumps 221 in the same cooling system 200 are closed. Under the action of the normally operating water pump 221, cooling water is pumped from the water supply tank 100 to the cooling system 200, first passes through the third valve 243 corresponding to the water pump 221, reaches the water inlet end of the water pump 221, and flows out from the water outlet end of the water pump 221, and then passes through the check valve 241 and the second valve 242 corresponding to the water pump 221 in sequence, and then reaches the cooling component 210 to cool the generator set, and the cooling water tail water after use by the cooling component 210 is finally gathered in the water supply tank 100 to realize the circulation of cooling water.

[0051] When the water pumps 221 in the same cooling system 200 are not operating normally, during the water supply process, the first valve 310 is opened, the check valve 241 and the second valve 242 corresponding to the water pump 221 connected to one end of the connecting pipe 300 in the cooling system 200 where the water pumps 221 are not operating normally are opened, and the third valve 243 is closed; the check valves 241, the second valve 242 and the third valve 243 corresponding to other water pumps 221 in the cooling system where the water pumps 221 are not operating normally are all closed. The check valve 241, the second valve 242 and the third valve 243 corresponding to the water pump 221 in another cooling system 200 connected to the other end of the connecting pipe 300 are opened. Among them, if there is other water pump 221 in another cooling system 200 connected to the other end of the connecting pipe 300 that can supply water to the other cooling system 200 connected to the other end of the connecting pipe 300, then the second valve 242 corresponding to the water pump 221 connected to the other end of the connecting pipe 300 in the cooling system 200 can also be closed, so that the cooling water drawn by the water pump 221 connected to the other end of the connecting pipe 300 in the cooling system 200 can be completely transported to the cooling system 200 where the water pump 221 is not operating normally, so as to ensure the water supply to the cooling system 200 where the water pump 221 is not operating normally per unit time.

[0052] Under the action of the water pump 221 in the other cooling system 200 connected to the other end of the connecting pipe 300, the cooling water is pumped from the water supply tank 100 to the cooling system 200 where the water pump 221 is not operating normally. During the circulation of the cooling water, the cooling water passes through the third valve 243 corresponding to the water pump 221 in the other cooling system 200 connected to the other end of the connecting pipe 300, the water pump 221 in the other cooling system 200 connected to the other end of the connecting pipe 300, and the check valve 241 corresponding to the water pump 221 in the other cooling system 200 connected to the other end of the connecting pipe 300, and reaches the connecting pipe 300, and finally passes through the first valve 310 and enters the cooling system 200 where the water pump 221 is not operating normally. The cooling water entering the cooling system 200 where the water pumps 221 are not operating normally is transported to the cooling component 210 to cool the generator set corresponding to the cooling system 200 where the water pumps 221 are not operating normally. The cooling water tail water after use by the cooling component 210 is again gathered into the water supply tank 100 to realize the circulation of cooling water.

[0053] Combination Figure 2 As shown, in some embodiments, the third valve 243 is also connected to a water pump filter 244 , and the water pump filter 244 is located below the water supply tank 100 .

[0054] The water pump filter 244 is located at the lower part of the water supply tank 100 and is arranged at the water inlet of the cooling system 200. During the circulation of cooling water, the cooling water first passes through the water pump filter 244 corresponding to the currently running water pump 221 when entering the cooling system 200. The water pump filter 244 can filter out solid impurities in the cooling water to prevent the solid impurities from entering the cooling system 200 and causing pipe blockage or device damage.

[0055] Combination Figure 1 As shown, in some embodiments, the cooling assembly 210 includes a stator air cooler 211 and a bearing cooler 212, the cooling water inlet of the circulating pump group 220 is connected to the water outlet of the water supply tank 100 through a pipe, and the cooling water outlet of the circulating pump group 220 is respectively connected to the cooling water inlets of the stator air cooler 211 and the bearing cooler 212 through pipes; the cooling water outlets of the stator air cooler 211 and the bearing cooler 212 are respectively connected to the water inlet of the water supply tank 100 through pipes.

[0056] When in use, the cooling water flowing out of the water outlet of the water pump 221 is divided into two branches, and the two branches flow to the stator air cooler 211 and the bearing cooler 212 respectively. After the cooling water reaches the stator air cooler 211, the engine stator is cooled under the operation of the stator air cooler 211; the bearings are immersed in the turbine oil, and the bearing cooler 212 is immersed in the turbine oil tank. After the cooling water reaches the bearing cooler 212, the cold water in the bearing cooler 212 takes away the heat of the turbine oil, thereby cooling the turbine oil and the engine bearings.

[0057] In some embodiments, the cooling water inlet and the cooling water outlet of the stator air cooler 211 and the bearing cooler 212 are both connected to a cooling assembly valve 213 .

[0058] The cooling component valve 213 may be a normally open valve.

[0059] Combination Figure 1 As shown, in some embodiments, the cooling system 200 also includes a tail water cooling device 250, the cooling water inlet of the tail water cooling device 250 is connected to the cooling water outlet of the stator air cooler 211 and the bearing cooler 212 through pipes, and the cooling water outlet of the tail water cooling device 250 is connected to the water inlet of the water supply tank 100 through a pipe. The tail water cooling device 250 is used to cool the cooling water discharged from the cooling device 210.

[0060] When in use, the cooling water tail water after use of the cooling device 210 enters the tail water cooling device 250 for cooling treatment, and the treated cooling water is then discharged into the water supply tank 100 for collection.

[0061] Combination Figure 2 As shown, in some embodiments, a liquid level detection element 110 for detecting the liquid level of cooling water is disposed in the water supply tank 100 .

[0062] The liquid level detection element 110 can be a liquid level signaler. When in use, the liquid level detection element 110 can monitor the liquid level of the cooling water in the water supply tank 100 in real time, and send a signal when the liquid level is lower than a preset threshold, indicating that the cooling water is insufficient so as to replenish water in time.

[0063] Combination Figure 1 As shown, in some embodiments, the water supply tank 100 also has a water storage port and a water discharge port. The water storage port is used to connect with a water source; the water discharge port is used to discharge cooling water in the water supply tank; the water storage port is connected to a water supply tank water inlet valve 120; and the water discharge port is connected to a water supply tank drain valve 130.

[0064] The water supply tank inlet valve 120 may be a normally open valve, and the water supply tank drain valve 130 may be a normally closed valve. When in use, tail water and impurities in the water in the water supply tank 100 can be discharged through the drain port. Water from the water source can enter the water supply tank 100 through the water storage port.

[0065] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0066] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cooling water circulation system for a power station, characterized in that: include: A water supply tank, which is used to set cooling water; At least two cooling systems, each of which corresponds to a generator set, and each of which includes a cooling assembly, a circulating pump assembly, a detection assembly, and a valve assembly; the cooling assembly is used to cool the corresponding generator set; the circulating pump assembly includes at least two water pumps, and the water pumps are both arranged on the cooling assembly; Two adjacent cooling assemblies are connected via a connecting pipe, and a first valve is provided on the connecting pipe; The detection component is used to detect whether each of the water pumps is operating normally. The valve component is arranged on the cooling component. The valve component is used to control one of the water pumps operating normally to be connected to the cooling component to supply water to the cooling component. When all the water pumps in the cooling component are not operating normally, the first valve controls at least one of the water pumps in the cooling component adjacent to the cooling component to be connected to the cooling component in the water pump that is not operating normally to supply water to the cooling component in the water pump that is not operating normally.

2. A power station cooling water circulation system according to claim 1, characterized in that: The detection component comprises: A plurality of water outlet valves are connected to the water outlet end of each water pump in a one-to-one correspondence; A plurality of water inlet valves are connected to the water inlet end of each water pump in a one-to-one correspondence; A plurality of pressure gauges are connected to each of the water outlet valves and the water inlet valves in a one-to-one correspondence. The pressure gauges are used to detect the pressure at the water outlet end and the water inlet end of each water pump to determine whether the water pump is operating normally.

3. A power station cooling water circulation system according to claim 2, characterized in that: The valve components are connected to the water pumps in a one-to-one correspondence to form a water pump control structure, and a water pump control structure in one of two adjacent cooling components is connected to a water pump control structure in the other component via the connecting pipe.

4. A power station cooling water circulation system according to claim 3, characterized in that: The valve assembly comprises: A check valve and a second valve connected to the water outlet meter valve, wherein the second valve, the check valve, the water outlet meter valve and the water outlet end of the water pump are connected in sequence; A third valve connected to the water inlet meter valve, wherein the third valve, the water inlet meter valve and the water inlet end of the water pump are connected in sequence; When the water pumps in the same cooling system are at least partially operating normally, the first valve is closed, the second valve and the third valve corresponding to one of the water pumps operating normally are opened, and the second valves and the third valves corresponding to the other water pumps operating normally or the water pumps not operating normally are closed; When the water pumps in the same cooling system are not operating normally, the first valve is opened, the second valve corresponding to the water pump connected to one end of the connecting pipe in the cooling system where the water pumps are not operating normally is opened, and the second valve and the third valve corresponding to the water pump in another cooling system connected to the other end of the connecting pipe are opened.

5. A power station cooling water circulation system according to claim 4, characterized in that: The third valve is also connected to a water pump filter, and the water pump filter is located below the water supply pool.

6. A power station cooling water circulation system according to any one of claims 1 to 5, characterized in that: The cooling assembly includes a stator air cooler and a bearing cooler. The cooling water inlet of the circulating pump group is connected to the water outlet of the water supply tank through a pipeline. The cooling water outlet of the circulating pump group is respectively connected to the cooling water inlets of the stator air cooler and the bearing cooler through pipelines; the cooling water outlets of the stator air cooler and the bearing cooler are respectively connected to the water inlet of the water supply tank through pipelines.

7. A power station cooling water circulation system according to claim 6, characterized in that: The cooling water inlet and the cooling water outlet of the stator air cooler and the bearing cooler are all connected with cooling component valves.

8. A power station cooling water circulation system according to claim 7, characterized in that: The cooling system also includes a tail water cooling device, the cooling water inlet of the tail water cooling device is connected to the cooling water outlets of the stator air cooler and the bearing cooler through pipes, and the cooling water outlet of the tail water cooling device is connected to the water inlet of the water supply tank through a pipe. The tail water cooling device is used to cool the cooling water discharged from the cooling component.

9. A power station cooling water circulation system according to claim 7, characterized in that: A liquid level detection component for detecting the liquid level of cooling water is arranged in the water supply tank.

10. A power station cooling water circulation system according to claim 9, characterized in that: The water supply pool also has a water storage port and a water discharge port, wherein the water storage port is used to communicate with a water source; and the water discharge port is used to discharge cooling water in the water supply pool; The water storage port is connected to a water supply tank water inlet valve; the water discharge port is connected to a water supply tank discharge valve.

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