Hydropower station technology water supply pipe network electromechanical equipment unit hydraulic heat dissipation system

Abstract

The utility model discloses a hydropower station technology water supply pipe network electromechanical equipment unit hydraulic cooling system which comprises a self-flowing water supply pipeline and a plurality of pump adding water supply pipelines which are connected with a water taking pool, the self-flowing water supply pipeline and the pump adding water supply pipelines are connected between the water taking pool and a water filtering module in parallel, and the water filtering module comprises a plurality of water filtering pipelines connected in parallel. The water outlet ends of the water filtering pipelines are connected with the water inlet end of the unit module, the unit module comprises two pipelines which are connected in parallel, one pipeline is led into a water guide bearing seal through a third water filter, and the other pipeline enters a four-way reversing valve through a cold water inlet end and is divided into an upper guide bearing seal, a thrust bearing seal and an air cooler; the guide bearing seal, the thrust bearing seal and the water outlet end of the air cooler are connected in parallel, flow back to the four-way reversing valve and are discharged into the drainage pool through the four-way reversing valve, the water outlet end of the water guide bearing seal is connected with the drainage pool, the requirement for the quality of diversion water is effectively lowered, pipeline abrasion is reduced, and the operation efficiency and safety of a water supply pipeline system are improved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for electromechanical equipment in water supply networks, and in particular to a hydraulic heat dissipation system for electromechanical equipment units in a hydropower station's water supply network. Background Technology

[0002] In the current hydropower station water supply network, the hydraulic cooling system layout for electromechanical equipment units still has many shortcomings, directly affecting the operating efficiency of the water supply system and the lifespan of the equipment. Currently, traditional water supply pipeline systems, after water intake, are filtered and transported to various branches to achieve auxiliary water seals for water guide bearings, cooling of upper guide bearings, thrust bearings, and air coolers. However, this system has high requirements for water quality and exhibits low flexibility and reliability. Furthermore, most existing hydraulic cooling systems lack automated monitoring and regulation functions, failing to dynamically adjust according to actual operating conditions. This results in the inability to maintain optimal heat dissipation performance during load changes, affecting not only the stability and energy efficiency of the water supply system but also hindering subsequent maintenance and repair work.

[0003] Therefore, it is necessary to propose a layout method for the hydraulic cooling system of the electromechanical equipment units in the water supply network of a hydropower station, to monitor water flow parameters in real time, improve cooling efficiency and system stability, greatly save manpower and material resources, and improve applicability and automation. Utility Model Content

[0004] This utility model provides a hydro-cooling system for electromechanical equipment units in a hydropower station's water supply network, aiming to solve the problems of low water treatment efficiency, poor applicability and self-control of traditional water supply pipeline systems, which affect the operating efficiency and equipment life of the water supply system.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A hydroelectric power station's water supply network and electromechanical equipment unit hydraulic cooling system includes a gravity-flow water supply pipeline and a pumped water supply pipeline connected to an intake pool. The gravity-flow water supply pipeline and several pumped water supply pipelines are connected in parallel between the intake pool and a water filtration module. The water filtration module includes several parallel water filtration pipelines, and the outlet ends of all the water filtration pipelines are connected to the inlet end of the unit module. The unit module includes two parallel pipelines. One pipeline passes through a third water filter and enters a water guide bearing seal. The other pipeline enters a four-way reversing valve through a cold water inlet and is diverted to an upper guide bearing seal, a thrust bearing seal, and an air cooler. The outlet ends of the guide bearing seal, thrust bearing seal, and air cooler are connected in parallel and converge, then return to the hot water inlet end of the four-way reversing valve and are discharged into a drainage pool through the hot water outlet end of the four-way reversing valve. The outlet end of the water guide bearing seal is connected to the drainage pool.

[0007] Preferably, a first flow meter and a first pressure sensor are provided on the parallel pipeline between the gravity-flow water supply pipeline and the pumped water supply pipeline and the water intake tank, and a fifth flow meter is provided on the parallel pipeline between the gravity-flow water supply pipeline and the pumped water supply pipeline and the water filtration module.

[0008] Preferably, a second flow meter is provided on the gravity-flow water supply pipeline.

[0009] Preferably, the pumped water supply pipeline has at least two lines.

[0010] More preferably, when the pumped water supply pipeline has two lines, one of the pumped water supply pipelines is connected in series from the inlet end to the outlet end with a second pressure sensor, a first electric hemispherical valve, a first frequency conversion booster pump, a second electric hemispherical valve, a third pressure sensor and a third flow meter.

[0011] The other pumped water supply pipeline is connected in series from the inlet to the outlet, consisting of a fourth pressure sensor, a third electric hemispherical valve, a second variable frequency booster pump, a fourth electric hemispherical valve, a fifth pressure sensor, and a fourth flow meter.

[0012] Preferably, the water filtration pipeline has at least two lines.

[0013] More preferably, when the water filtration pipeline has two paths, one of the water filtration pipelines is connected in series from the water inlet end to the water outlet end with a sixth pressure sensor, a fifth electric hemispherical valve, a first water filter, a sixth electric hemispherical valve and a seventh pressure sensor.

[0014] The other water filtration pipeline is connected in series from the inlet to the outlet, consisting of the eighth pressure sensor, the seventh electric hemispherical valve, the second water filter, the eighth electric hemispherical valve, and the ninth pressure sensor.

[0015] Preferably, a sixth flow meter is provided on the parallel pipeline connecting the outlet end of the water filter pipeline and the inlet end of the unit module.

[0016] Preferably, on the pipeline of the unit module where the water guide bearing seal is located, a seventh flow meter, a tenth pressure sensor, a ninth electric hemispherical valve, a third water filter, a tenth electric hemispherical valve and an eleventh pressure sensor are connected in series from the water inlet end to the water outlet end of the water guide bearing seal, and an eighth flow meter is provided at the water outlet end of the water guide bearing seal.

[0017] Preferably, on the pipeline of the unit module where the four-way reversing valve is located, a ninth flow meter and a first temperature sensor are connected in series from the front end of the cold water inlet of the four-way reversing valve to the outlet, and a second temperature sensor and a tenth flow meter are connected in series from the inlet to the outlet on the pipeline between the hot water outlet of the four-way reversing valve and the drainage tank.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a hydraulic cooling system layout for the electromechanical equipment units in a hydropower station's water supply network. By introducing branch structures, water filters, variable frequency booster pumps, electric valves, pressure and temperature sensors into the pipeline system, and through intelligent monitoring, it achieves automatic determination and distribution of pipeline water source pressure, reduces the requirements for water quality, improves the cooling efficiency of the electromechanical equipment units, controls the wear rate of sewage on connecting pipelines, makes the system more flexible and safe, and lays the foundation for automation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the system connection of this utility model;

[0021] In the diagram: 1. Water intake tank; 2. First flow meter; 3. First pressure sensor; 4. Second flow meter; 5. Second pressure sensor; 6. First electric hemispherical valve; 7. First variable frequency booster pump; 8. Second electric hemispherical valve; 9. Third pressure sensor; 10. Third flow meter; 11. Fourth pressure sensor; 12. Third electric hemispherical valve; 13. Second variable frequency booster pump; 14. Fourth electric hemispherical valve; 15. Fifth pressure sensor; 16. Fourth flow meter; 17. Fifth flow meter; 18. Sixth pressure sensor; 19. Fifth electric hemispherical valve; 20. First water filter; 21. 1. Sixth electric hemispherical valve; 22. Seventh pressure sensor; 23. Eighth pressure sensor; 24. Seventh electric hemispherical valve; 25. Second water filter; 26. Eighth electric hemispherical valve; 27. Ninth pressure sensor; 28. Sixth flow meter; 29. ​​Seventh flow meter; 30. Tenth pressure sensor; 31. Ninth electric hemispherical valve; 32. Third water filter; 33. Tenth electric hemispherical valve; 34. Eleventh pressure sensor; 35. Eighth flow meter; 36. Ninth flow meter; 37. First temperature sensor; 38. Second temperature sensor; 39. Tenth flow meter; 40. Drainage tank. Detailed Implementation

[0022] The embodiments will be further described below with reference to the accompanying drawings.

[0023] like Figure 1As shown in the preferred embodiment 1, a hydropower station technical water supply network electromechanical equipment unit hydraulic heat dissipation system includes a gravity-flow water supply pipeline and a pumped water supply pipeline connected to the intake pool 1. The gravity-flow water supply pipeline and several pumped water supply pipelines are connected in parallel between the intake pool 1 and the water filtration module. The water filtration module includes several parallel water filtration pipelines. The outlet of each water filtration pipeline is connected to the inlet of the unit module. The unit module includes two parallel pipelines. One pipeline passes through a third water filter 32 to the water guide bearing seal. The other pipeline passes through the cold water inlet to the four-way reversing valve and is diverted to the upper guide bearing seal, the thrust bearing seal, and the air cooler. The outlets of the guide bearing seal, the thrust bearing seal, and the air cooler are connected in parallel and converge, then flow back to the hot water inlet of the four-way reversing valve and are discharged into the drainage pool 40 through the hot water outlet of the four-way reversing valve. The outlet of the water guide bearing seal is connected to the drainage pool 40.

[0024] When the water pressure is high enough, the free flow of water in the gravity-fed water supply pipeline can achieve heat dissipation of the electromechanical equipment unit. The variable frequency booster pump of the multi-use water supply pipeline starts when the water flow is insufficient to reach the electromechanical equipment unit. It is used to regulate the inlet water pressure so that the water source can reach the electromechanical equipment unit smoothly to achieve system heat dissipation and improve heat dissipation efficiency. At the same time, it controls the wear rate of sewage on the connecting pipes. The multi-use water filter pipeline in the water filter module is used to filter out impurities in the water source, reduce wear on the pipeline, and reduce the high requirements of the overall system for the water quality of the water intake. The third water filter 32 before the water guide bearing performs secondary filtration to ensure the water quality entering the water guide bearing seal. The four-way reversing valve ensures the cooling of the upper guide bearing seal, the thrust bearing seal, and the air cooler, and discharges the hot water to the drainage tank 40.

[0025] The parallel pipeline between the gravity-flow water supply pipeline and the pumped water supply pipeline and the water intake tank 1 is equipped with a first flow meter 2 and a first pressure sensor 3. The first pressure sensor 3 detects the water flow pressure. When the water flow pressure is high enough, it is not necessary to start the first variable frequency booster pump 7 and the second variable frequency booster pump 13. The heat dissipation of the electromechanical equipment unit can be achieved by the free flow of water in the gravity-flow water supply pipeline. The fifth flow meter 17 is connected to the parallel pipeline between the gravity-flow water supply pipeline and the pumped water supply pipeline and the water filter module.

[0026] A second flow meter 4 is installed on the gravity-flow water supply pipeline to detect the flow rate of gravity-flow water.

[0027] The pumped water supply pipeline shall have at least two lines. This shall ensure that one line is in use and multiple lines are in standby, or at least one line is in use and one line is in standby.

[0028] As a preferred embodiment 2, when the pumped water supply pipeline has two lines, one of the pumped water supply pipelines is connected in series from the inlet end to the outlet end with a second pressure sensor 5, a first electric hemispherical valve 6, a first frequency conversion booster pump 7, a second electric hemispherical valve 8, a third pressure sensor 9 and a third flow meter 10, for monitoring and regulating the water flow rate;

[0029] Another pumped water supply pipeline is connected in series from the inlet to the outlet with a fourth pressure sensor 11, a third electric hemispherical valve 12, a second variable frequency booster pump 13, a fourth electric hemispherical valve 14, a fifth pressure sensor 15, and a fourth flow meter 16, which are used to monitor and regulate the water flow rate.

[0030] The first variable frequency booster pump 7 and the second variable frequency booster pump 13 are designed to be used in one and standby respectively. When the water pressure is high enough, neither pump will start. When the water pressure is low and insufficient to reach the electromechanical equipment, the pump will start to regulate the inlet water pressure so that the water source can reach the electromechanical equipment smoothly to achieve system heat dissipation, improve heat dissipation efficiency, and at the same time control the wear rate of sewage on the connecting pipes, thereby increasing the safety and flexibility of the system.

[0031] The water filtration pipeline shall have at least two lines. This ensures that one line is in use with multiple lines in reserve, or at least one line is in use with one line in reserve.

[0032] As a preferred embodiment 3, when the water filtration pipeline has two paths, one of the water filtration pipelines is connected in series from the inlet end to the outlet end with a sixth pressure sensor 18, a fifth electric hemispherical valve 19, a first water filter 20, a sixth electric hemispherical valve 21 and a seventh pressure sensor 22, which are used to monitor and regulate the water flow rate and prevent impurities from clogging the pipeline.

[0033] Another water filter pipeline is connected in series from the inlet to the outlet with the eighth pressure sensor 23, the seventh electric hemispherical valve 24, the second water filter 25, the eighth electric hemispherical valve 26, and the ninth pressure sensor 27, which are used to monitor and regulate the water flow and prevent impurities from clogging it.

[0034] The first water filter 20 and the second water filter 25 are designed with one in use and one on standby. When the flow rate is low, only the first water filter is activated. When the flow rate is high, both water filters are activated simultaneously. This one-in-one-on-standby design can filter out impurities in the water source, reduce wear on the pipeline, increase the safety and flexibility of the system, and at the same time reduce the overall system's high requirements for the quality of the incoming water. The impure water source is filtered by the first water filter 20 and the second water filter 25 to form a pure water source. The pure water source flows to the electromechanical equipment unit through a four-way reversing valve for hydraulic heat dissipation. The resulting hot water is discharged again through the four-way reversing valve, thus realizing the entire heat dissipation process.

[0035] A sixth flow meter 28 is installed on the parallel pipeline between the outlet end of the filter pipeline and the inlet end of the unit module.

[0036] The water flow in each branch first undergoes the first impurity filtration. Since the water guide bearing has high requirements for water quality, it undergoes a second filtration through the third water filter 32 in this branch to further remove fine impurities, ensure that the water quality meets the requirements, and guarantee the stability and safety of the system operation.

[0037] On the pipeline of the unit module where the water guide bearing seal is located, the front end of the water guide bearing seal is connected in series from the water inlet end to the water outlet end with the seventh flow meter 29, the tenth pressure sensor 30, the ninth electric hemispherical valve 31, the third water filter 32, the tenth electric hemispherical valve 33, and the eleventh pressure sensor 34. The water guide bearing seal is equipped with an eighth flow meter 35 at the water outlet end, which is used to monitor and regulate the water flow rate and prevent impurities from clogging it.

[0038] On the pipeline of the unit module where the four-way reversing valve is located, a ninth flow meter 36 and a first temperature sensor 37 are connected in series from the front end of the cold water inlet of the four-way reversing valve to the outlet. On the pipeline between the hot water outlet of the four-way reversing valve and the drainage tank 40, a second temperature sensor 38 and a tenth flow meter 39 are connected in series from the inlet to the outlet.

[0039] The four-way reversing valve is used to control the direction of water flow. The pure water source after primary filtration flows into the thrust bearing, upper guide bearing and air cooler through the four-way reversing valve to dissipate heat from the electromechanical equipment unit. The hot water formed thereafter is discharged again through the four-way reversing valve. A first temperature sensor 37 and a second temperature sensor 38 are respectively installed at the inlet and outlet ends of the four-way reversing valve to monitor the temperature difference between the inlet and outlet water in real time, optimize the water flow control in the heat exchange process, and achieve efficient utilization of cooling water.

[0040] As a preferred embodiment 4, all electronic devices in the system can be connected to an external industrial PLC controller to form a linkage control. The PLC controller transmits wireless signals with the terminal in the factory to monitor the status of each branch in real time. It can also automatically adjust the system according to various monitoring signals, such as flow rate, pressure and temperature, and set thresholds to automatically trigger the alarm system, so as to realize intelligent perception and early warning of the water supply pipeline system.

[0041] The working principle of this utility model:

[0042] When the water pressure is high enough, the free flow of water in the gravity-fed water supply pipeline can achieve heat dissipation of the electromechanical equipment unit. The variable frequency booster pump of the multi-use water supply pipeline starts when the water flow is insufficient to reach the electromechanical equipment unit. It is used to regulate the inlet water pressure so that the water source can reach the electromechanical equipment unit smoothly to achieve system heat dissipation and improve heat dissipation efficiency. At the same time, it controls the wear rate of sewage on the connecting pipes. The multi-use water filter pipeline in the water filter module is used to filter out impurities in the water source, reduce wear on the pipeline, and reduce the high requirements of the overall system for the water quality of the water intake. The third water filter 32 before the water guide bearing performs secondary filtration to ensure the water quality entering the water guide bearing seal. The four-way reversing valve ensures the cooling of the upper guide bearing seal, the thrust bearing seal, and the air cooler, and discharges the hot water to the drainage tank 40.

Claims

1. A hydroelectric power station technology water supply pipe network electromechanical equipment unit hydraulic heat dissipation system, comprising a self-flow water supply pipeline and a pump water supply pipeline connected with a water intake pool (1), characterized in that, The self-flow water supply pipeline and the pump water supply pipeline are provided with a first flowmeter (2) and a first pressure sensor (3) on the parallel pipeline of the water intake pool (1), and the self-flow water supply pipeline and the pump water supply pipeline are provided with a fifth flowmeter (17) on the parallel pipeline of the water filtering module.

2. The water power station technical water supply pipe network electromechanical equipment unit water power heat dissipation system according to claim 1, characterized in that, The self-flow water supply pipeline is provided with a second flowmeter (4).

3. The water power station technical water supply pipe network electromechanical equipment unit water force heat dissipation system according to claim 1, characterized in that, The pump water supply pipeline is at least two.

4. The water power station technical water supply pipe network electromechanical equipment unit water power heat dissipation system according to claim 1, characterized in that, When the pump water supply pipeline is two, a second pressure sensor (5), a first electric half-ball valve (6), a first variable frequency booster pump (7), a second electric half-ball valve (8), a third pressure sensor (9) and a third flowmeter (10) are sequentially connected in series on one pump water supply pipeline from the water inlet end to the water outlet end; 5. A hydroelectric power station technical water supply pipe network electromechanical equipment unit water force heat radiation system according to claim 4, characterized in that, Another pump water supply pipeline is sequentially connected in series from the water inlet end to the water outlet end, and the other pump water supply pipeline is sequentially connected in series from the water inlet end to the water outlet end. The water filtering pipeline is at least two.

6. The water power station technical water supply pipe network electromechanical equipment unit water force heat dissipation system according to claim 1, characterized in that, When the water filtering pipeline is two, a sixth pressure sensor (18), a fifth electric half-ball valve (19), a first water filter (20), a sixth electric half-ball valve (21) and a seventh pressure sensor (22) are sequentially connected in series on one water filtering pipeline from the water inlet end to the water outlet end; 7. A hydroelectric power station technical water supply pipe network electromechanical equipment unit water force heat radiation system according to claim 6, characterized in that, Another water filtering pipeline is sequentially connected in series from the water inlet end to the water outlet end, and the other water filtering pipeline is sequentially connected in series from the water inlet end to the water outlet end. The water filtering pipeline is provided with a sixth flowmeter (28) on the parallel pipeline of the water inlet end of the unit module.

8. The water power station technical water supply pipe network electromechanical equipment unit water force heat dissipation system according to claim 1, characterized in that, On the pipeline of the water guide bearing seal module, a seventh flowmeter (29), a tenth pressure sensor (30), a ninth electric half-ball valve (31), a third water filter (32), a tenth electric half-ball valve (33) and an eleventh pressure sensor (34) are sequentially connected in series from the water inlet end to the water outlet end in front of the water inlet end of the water guide bearing seal, and the water outlet end of the water guide bearing seal is provided with an eighth flowmeter (35).

9. A hydroelectric power station technical water supply pipe network electromechanical equipment unit water force heat radiation system according to claim 1, characterized in that, ​ 10. A hydroelectric power station technical water supply pipe network electromechanical equipment unit water force heat radiation system according to claim 1, characterized in that, The fourth-way reversing valve is provided with the ninth flow meter (36) and the first temperature sensor (37) in series along the water inlet end to the water outlet end in front of the water inlet end of the cold water inlet end of the fourth-way reversing valve, and the fourth-way reversing valve is provided with the second temperature sensor (38) and the tenth flow meter (39) in series along the water inlet end to the water outlet end between the hot water outlet end of the fourth-way reversing valve and the drain tank (40).

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