CN204299795U - Based on power plant's cooling system that heat energy and wind energy drive - Google Patents

Abstract

The cooling system for a power plant driven by thermal energy and wind energy disclosed by the utility model includes a cooling tower and an evaporative cooling water chiller connected through a water pipe network. The cooling tower is externally connected with a power generation system control cabinet. There is a chimney connected to the cover, and an impeller-wind composite power generation system is installed inside the chimney, and the impeller-wind composite power generation system is externally connected to a power controller; the impeller-wind composite power generation system is connected by a horizontal axis wind power generation device and an impeller power generation device through a power line Composition: a cooling tower, including a tower body, the top of the tower body is provided with a focusing pot cover through a bracket, a direct evaporative cooler is arranged in the tower body, a fan is arranged above the direct evaporative cooler, the fan is fixed on the bracket, and the fan passes through the power line Connect with power controller. The cooling system for the power plant of the utility model can not only combine the waste heat of the power plant and wind energy to generate electricity, but also improve the cooling effect of circulating water and improve the cooling efficiency.

Description

Cooling system for power plants driven by thermal energy and wind energy

technical field

The utility model belongs to the technical field of cooling equipment, in particular to a cooling system for power plants driven by thermal energy and wind energy.

Background technique

The working principle of the cooling tower in the thermal power plant is: the outdoor air passes through the cooling tower, and after heat and moisture exchange with high-temperature water, the temperature rises. If it is directly discharged to the outside, it will not only waste the heat brought out of the cooling tower body, but also Water vapor will be evaporated in vain, causing a lot of waste of energy. Therefore, we should find a way to utilize these heat energy and convert heat energy into other energy sources for utilization. Usually, where thermal power plants are built, wind energy is relatively abundant. Combining wind energy and waste heat from the power plant to generate electricity can provide abundant electric energy for the power plant and reduce energy waste.

The amount of water cooled by the cooling tower is large, and the cooling capacity required by the high-temperature circulating water is also large, resulting in a relatively large volume of the cooling tower; the evaporative cooling chiller is combined with the cooling tower, and the evaporative cooling chiller is used to assist the cooling of the cooling tower. It can effectively share the cooling capacity of the cooling tower and reduce the volume of the cooling tower.

In Northwest my country, the temperature difference between dry and wet bulbs is large, and dry air energy and wind energy are relatively abundant. It is completely possible to use evaporative cooling chillers to cool down the circulating water of power plants. Especially in the high temperature environment in summer, the evaporative cooling chiller unit and the cooling tower are used to jointly cool the circulating water, which can ensure the cooling effect of the circulating water, thereby ensuring that in the high temperature environment, the system back pressure is reduced, the steam turbine power generation efficiency is improved, and the power generation is reduced. Coal consumption.

Utility model content

The purpose of this utility model is to provide a cooling system for a power plant driven by thermal energy and wind energy, which combines the waste heat of the power plant and wind energy to generate power for the evaporative cooling chiller and the cooling tower; To cool the circulating water, improve the cooling efficiency.

The technical solution adopted by the utility model is that the cooling system for power plants driven by thermal energy and wind energy includes a cooling tower and an evaporative cooling water chiller connected through a water pipe network. There is a focusing pot cover, a chimney is connected to the focusing pot cover, and an impeller-wind composite power generation system is installed in the chimney, and the impeller-wind composite power generation system is externally connected to a power controller; the impeller-wind composite power generation system consists of a horizontal shaft connected by a power line Composed of wind power generation device and impeller power generation device; cooling tower includes a tower body, the top of the tower body is provided with a focusing pot cover through a bracket, a direct evaporative cooler is arranged in the tower body, and a fan is arranged above the direct evaporative cooler, and the fan is fixed on On the bracket, the fan is connected with the power controller through a power cord.

The utility model is also characterized in that,

The horizontal axis wind power generation device includes a vertical support rod. The lower end of the support rod is fixed on the focusing pot cover, and a wind generator is installed at the lower end. The upper end of the support rod extends out of the chimney, and the upper end is provided with rotating blades unit, the rotating blade unit is connected to the wind generator through the power line; the impeller power generation device includes the impeller generator fixed on the inner wall of the chimney, the impeller generator is connected to the impeller unit through the power line, and the impeller unit is composed of multiple series in the same connection Composed of impellers on the shaft, the impeller generator is connected to the wind generator through the power line.

The control cabinet of the power generation system includes a controller, a storage battery pack, and an inverter arranged in the cabinet and connected in sequence through a power cord. The controller is connected to the wind turbine through a power cord, and the inverter is connected to the power controller through a power cord; The battery pack consists of multiple batteries connected in series.

The direct evaporative cooler includes packing, and a spraying device is arranged above the packing, and the spraying device is composed of a spray pipe and a plurality of downward spraying nozzles evenly arranged on the spray pipe; An air duct is formed between the water pool, the filler and the sump, and an air inlet is provided on the side wall of the tower body corresponding to the air duct; a second water pipe is connected to the outside of the spray pipe, and the second water pipe is connected to the evaporative cooling chiller through the third water pipe. The junction of the second water pipe and the third water pipe is connected with a high-temperature water inlet pipe.

The second water pipe is provided with a valve b; the third water pipe is provided with a valve a.

The evaporative cooling water chiller includes an organic unit shell, and air inlets are arranged on the opposite side walls of the unit shell, and a heat exchange coil-V-type filler composite cooler is arranged inside the unit shell, and the heat exchange coil-V There is a vertical pipe indirect evaporative cooler on the left and right sides of the type packing composite cooler, and the heat exchange coil-V-shaped packing composite cooler and the corresponding unit above the two vertical pipe indirect evaporative coolers An air outlet is correspondingly arranged on the top wall of the casing, and an exhaust fan is arranged in each air outlet.

Heat exchange coil-V-shaped packing compound cooler, including V-shaped packing, heat exchange coil and first water distributor are arranged above the V-shaped packing in sequence, and the first circulating water tank is arranged below the V-shaped packing. The first circulating water tank is connected to the first water distributor through the first water supply pipe, the water inlet of the heat exchange coil is connected to the third water pipe, the water outlet of the heat exchange coil is connected to a low-temperature water outlet pipe, and the low-temperature water outlet pipe passes through the first A water pipe is connected to the sump; the vertical pipe indirect evaporative cooler includes a vertical heat exchange tube group, a second water distributor is arranged above the vertical heat exchange tube group, and a The second circulating water tank is connected with the second water distributor through the second water supply pipe.

Both the first water supply pipe and the second water supply pipe are provided with circulating water pumps; the circulating water pumps are connected with the power controller through the power cord; the exhaust fan is also connected with the power controller through the power cord.

The beneficial effects of the utility model are:

1. In the cooling system for a power plant of the present invention, after the air and hot water are exchanged for heat and moisture, and heated by a solar focusing pot cover during the ascending process of the airflow, the airflow accelerates upwards to drive the impeller power generation device in the chimney to generate electricity.

2. In the power plant cooling system of the present utility model, a horizontal axis wind power generation device is placed in the chimney at the top of the cooling tower. Since the height of the cooling tower of the power plant is generally relatively high and the wind speed above it is relatively large, a horizontal axis wind power generation device is placed above it. Axial wind power generation device can make full use of wind energy to generate electricity.

3. The cooling system for the power plant of the utility model uses the evaporative cooling chiller together with the cooling tower to cool the circulating water of the power plant. Small cooling tower volume.

4. The cooling system for power plants of the present utility model uses wind energy, thermal energy and solar energy to drive the operation of evaporative cooling chillers and water pumps and fans in cooling towers; at the same time, excess electricity can be stored for other purposes in power plants. Electricity in the place.

Description of drawings

Fig. 1 is the structural representation of the utility model based on the cooling system of the power plant driven by thermal energy and wind energy;

Fig. 2 is a structural schematic diagram of the power generation system control cabinet in the power plant cooling system driven by thermal energy and wind energy of the present invention.

In the figure, 1. cooling tower, 2. sump, 3. filler, 4. bracket, 5. focusing pot cover, 6. support rod, 7. impeller generator, 8. impeller, 9. chimney, 10. fan, 11. Vertical heat exchange tube group, 12. V-type packing, 13. First water supply pipe, 14. Heat exchange coil, 15. Valve a, 16. Valve b, 17. Wind generator, 18. Evaporative cooling cold water Unit, 19. Controller, 20. Battery, 21. Inverter, 22. Power generation system control cabinet, 23. Low temperature water outlet pipe, 24. High temperature water inlet pipe, 25. Air exhaust port, 26. Exhaust fan, 27 .First circulating water tank, 28. Second circulating water tank, 29. Second water supply pipe, 30. Power controller, 31. Rotating blade unit, 32. Spray pipe, 33. Air duct, G1. First water pipe, G2 . Second water pipe, G3. Third water pipe.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model is based on the cooling system for power plants driven by thermal energy and wind energy. Its structure is shown in Figure 1, including a cooling tower 1 and an evaporative cooling water chiller 18 connected through a water pipe network. The cooling tower 1 is externally connected to a power generation system control cabinet 22. , the top of the cooling tower 1 is provided with a focusing pot cover 5, and a chimney 9 is connected to the focusing pot cover 5. An impeller-wind composite power generation system is arranged inside the chimney 9, and a power controller 30 is externally connected to the impeller-wind composite power generation system. The composite power generation system is composed of a horizontal axis wind power generation device and an impeller power generation device connected by a power line; the cooling tower 1 includes a tower body, the top of the tower body is provided with a focusing pot cover 5 through a bracket 4, and a direct evaporative cooler is arranged in the tower body A fan 10 is arranged above the direct evaporative cooler, the fan 10 is fixed on the bracket 4, and the fan 10 is connected to the power controller 30 through a power cord.

The horizontal axis wind power generation device includes a vertically arranged support rod 6, the lower end of the support rod 6 is fixed on the focusing pot cover 5, and a wind generator 17 is arranged at the lower end, and the upper end of the support rod 6 stretches out from the chimney 9, and A rotating blade unit 31 is connected to the upper end, and the rotating blade unit 31 is connected to the wind power generator 17 through a power line.

The impeller power generation device includes an impeller generator 7 fixed on the inner wall of the chimney 9. The impeller generator 7 is connected to the impeller unit through a power line. The impeller unit is composed of a plurality of impellers 8 connected in series on the same connecting shaft. The impeller generator 7 Connect with wind power generator 17 through power line.

The power generation system control cabinet 22, as shown in Figure 2, includes a controller 19, a battery pack and an inverter 21 arranged in the cabinet and connected sequentially through power lines; the battery pack is composed of a plurality of batteries 20 connected in series; the inverter 21 It is connected to the power controller 30 through a power line, and the controller 19 is connected to the wind generator 17 through a power line.

The direct evaporative cooler includes packing 3, and a spraying device is arranged above the packing 3, and the spraying device is composed of a spray pipe 32 and a plurality of downward spraying nozzles evenly arranged on the spray pipe 32; the packing 3 A sump 2 is provided below the water collection pool 2, and an air duct 33 is formed between the filler 3 and the sump 2; an air inlet is provided on the side wall of the tower corresponding to the air duct 33; the spray pipe 32 is externally connected with a second water pipe G2, and the second water pipe G2 is connected to the evaporative cooling chiller 18 through the third water pipe G3, and a high-temperature water inlet pipe 24 is connected to the connection between the second water pipe G2 and the third water pipe G3.

The second water pipe G2 is provided with a valve b16; the third water pipe G3 is provided with a valve a15 for adjusting flow.

The evaporative cooling chiller unit 18 includes an organic unit shell, and air inlets are arranged on the opposite side walls of the unit shell, and a heat exchange coil-V-shaped packing composite cooler is arranged in the unit shell, and the heat exchange coil- There is a standpipe indirect evaporative cooler on the left and right sides of the V-shaped packing compound cooler, and the heat exchange coil-V-filling compound cooler and the corresponding ones above the two standpipe indirect evaporative coolers An air outlet 25 is correspondingly arranged on the top wall of the casing of the unit, and each air outlet 25 is provided with an exhaust fan 26 .

Heat exchange coil-V-shaped packing composite cooler, including V-shaped packing 12, heat exchange coil 14 and the first water distributor are arranged in sequence above the V-shaped packing 12, and the second water distributor is arranged below the V-shaped packing 12 A circulating water tank 27, the first circulating water tank 27 is connected to the first water distributor through the first water supply pipe 13; the first water supply pipe 13 is provided with a circulating water pump, and the water inlet of the heat exchange coil 14 is connected to the third water pipe G3, The water outlet of the heat exchange coil 14 is connected with a low-temperature water outlet pipe 23, and the low-temperature water outlet pipe 23 is connected with the sump 2 through the first water pipe G1.

The vertical tube indirect evaporative cooler includes a vertical heat exchange tube group 11, a second water distributor is arranged above the vertical heat exchange tube group 11, and a second circulating water tank is arranged below the vertical heat exchange tube group 11 28. The second circulating water tank 28 is connected to the second water distributor through the second water supply pipe 29, and the second water supply pipe 29 is provided with a circulating water pump.

All circulating water pumps and exhaust fans 26 in the evaporative cooling chiller unit 18 are respectively connected to the power controller 30 through power lines.

The utility model is based on heat energy and the effect of the effect of cooling tower 1 of cooling tower 1 in the power plant cooling system driven by thermal energy and wind energy respectively as follows:

(1) The evaporative cooling chiller 18 is equipped with a heat exchange coil-V-shaped packing composite cooler and two vertical pipe indirect evaporative coolers, and the two vertical pipe indirect evaporative coolers are symmetrically arranged on the heat exchange plate Both sides of the tube-V-shaped packing compound cooler; V-shaped packing 12 is used in the heat exchange coil-V-shaped packing compound cooler, and a heat exchange coil 14 is set above the V-shaped packing 12, from The high-temperature water in the condenser of the steam turbine of the power plant flows into the third water pipe G3 through the high-temperature water inlet pipe 24 and finally flows into the heat exchange coil 14 to exchange heat and moisture with water and air to cool down the water.

(2) support 4 is set on the top of cooling tower 1, utilize support 4 to be provided with focusing pot cover 5, focus pot cover 5 is similar to a big convex lens, can be used for collecting sunlight, heat up from the air in tower body; A chimney 9 is inserted on the pot cover 5, and an impeller power generation device is placed in the chimney 9, and the heated air is accelerated to rise by using the impeller unit in the impeller power generation device, thereby driving the impeller generator 7 to generate electricity; in addition, in order to make full use of high For the wind energy in the air, a horizontal axis wind power generator device is added in the chimney 9, which can be combined with thermal power generation to generate electricity and improve power generation efficiency.

The cooling system for power plants driven by thermal energy and wind energy of the utility model not only combines the waste heat of the power plant and wind energy to generate electricity, but also improves the cooling effect of circulating water. The working process is as follows:

(1) Power generation process:

The outdoor air enters the tower body from the air inlet of the cooling tower 1. After heat and moisture exchange with the hot water at the filler 3 in the cooling tower 1, the heated air rises rapidly after the water is cooled and flows from the top of the cooling tower 1. Outflow; enter the heating zone of the solar energy focusing pot cover 5, because the focusing pot cover 5 is a large convex lens structure, which has a focusing effect on the sun's rays, so the air after heating is accelerated in the chimney 9, pushing all The impeller 8 rotates, thereby driving the impeller generator 7 to generate electricity; a horizontal axis wind power generation device is also installed in the chimney 9, and the electric energy output by the horizontal axis wind power generation device enters the power generation system control cabinet together with the electric energy generated by the impeller power generation device through the power line The controller 19 in 22, after the controller 19 stores the electric energy in the battery pack 20, is connected with the power controller 30 after being processed by the inverter 21, thereby driving the fan 10 and the evaporative cooling chiller 18 in the cooling tower 1 The internal circulating water pump and exhaust fan 26 run.

(2) The cooling process is as follows:

The high-temperature water from the steam turbine condenser in the power plant is transported through the high-temperature water inlet pipe 24, the valve b16 and the valve a15 are opened, and the high-temperature water is divided into the second water pipe G2 and the third water pipe G3 respectively, and then enters the cooling tower 1 and evaporative cooling Cool down in the chiller 18; the water entering the cooling tower 1 falls into the sump 2 after being cooled, and merges with the low-temperature water from the evaporative cooling chiller 18 through the first water pipe G1 and then enters the condenser , to complete the cycle.

The cooling system for power plants driven by heat energy and wind energy in the utility model combines the waste heat of the power plant and wind energy to generate electricity, and provides electric energy for the cooling tower 1 and the evaporative cooling water chiller 18, and the generated electric energy can be stored in the battery pack first, as a power plant It can be used in an emergency when other places in the house are out of power; in addition, the evaporative cooling water chiller 18 is combined with the cooling tower 1 to cool down the circulating water together, which can improve the cooling efficiency and reduce the floor area of the cooling tower.

Claims (8)

1. The cooling system for power plants driven by thermal energy and wind energy is characterized in that it includes a cooling tower (1) connected by a water pipe network and an evaporative cooling chiller (18), and the cooling tower (1) is externally connected with a power generation system The control cabinet (22), the top of the cooling tower (1) is provided with a focusing pot cover (5), the focusing pot cover (5) is connected with a chimney (9), and the inside of the chimney (9) is provided with an impeller- A wind power composite power generation system, the impeller-wind power composite power generation system is externally connected with a power controller (30); The impeller-wind composite power generation system is composed of a horizontal axis wind power generation device and an impeller power generation device connected by a power line; The cooling tower (1) includes a tower body, the top of the tower body is provided with a focusing pot cover (5) through a support (4), and a direct evaporative cooler is arranged in the tower body, and the direct evaporative cooler A fan (10) is arranged above, and the fan (10) is fixed on the support (4), and the fan (10) is connected to the power controller (30) through a power cord. 2. The cooling system for a power plant according to claim 1, wherein the horizontal axis wind power generation device includes a vertically arranged support rod (6), and the lower end of the support rod (6) is fixed on the focusing On the pot cover (5), a wind generator (17) is arranged at the lower end, the upper end of the support rod (6) stretches out from the chimney (9), and a rotating blade unit (31) is arranged at the upper end, and the rotating blade unit (31) is arranged at the upper end. The blade unit (31) is connected to the wind generator (17) through a power line; The impeller power generation device includes an impeller generator (7) fixed on the inner wall of the chimney (9), the impeller generator (7) is connected to the impeller unit through a power line, and the impeller unit is composed of a plurality of The impeller (8) on the connecting shaft is composed, and the impeller generator (7) is connected with the wind power generator (17) through a power line. 3. The cooling system for power plants according to claim 1, characterized in that, the power generation system control cabinet (22) includes a controller (19), a storage battery pack and an inverter that are arranged in the cabinet and connected in sequence through power lines. Transformer (21), described controller (19) is connected with wind power generator (17) by power line, and described inverter (21) is connected with power controller (30) by power line; A plurality of accumulators (20) are connected in series. 4. The cooling system for power plant according to claim 1, characterized in that, the direct evaporative cooler includes packing (3), and a spraying device is arranged above the packing (3), and the spraying The device consists of a spray pipe (32) and a plurality of downward spraying nozzles evenly arranged on the spray pipe (32); A sump (2) is arranged below the filler (3), an air duct (33) is formed between the filler (3) and the sump (2), and the side wall of the tower body corresponding to the duct (33) There is an air inlet on it; The spray pipe (32) is externally connected with a second water pipe (G2), and the second water pipe (G2) is connected to the evaporative cooling water chiller (18) through a third water pipe (G3), and the second water pipe (G2) A high-temperature water inlet pipe (24) is connected to the junction of the third water pipe (G3). 5. The cooling system for power plants according to claim 4, characterized in that, the second water pipe (G2) is provided with a valve b (16); The third water pipe (G3) is provided with a valve a (15). 6. The cooling system for a power plant according to claim 1, characterized in that the evaporative cooling water chiller (18) includes an organic unit casing, and air inlets are arranged on opposite side walls of the unit casing , the unit shell is provided with a heat exchange coil-V-type packing compound cooler, and the left and right sides of the heat exchange coil-V-type packing compound cooler are respectively provided with a standpipe type indirect evaporator Cooler, said heat exchange coil-V-shaped packing composite cooler and two standpipe indirect evaporative coolers are respectively provided with an air exhaust port (25) on the top wall of the corresponding unit shell, each An exhaust fan (26) is arranged in the air outlet (25). 7. The cooling system for power plants according to claim 6, characterized in that, said heat exchange coil-V-type packing composite cooler includes V-type packing (12), and said V-type packing (12) A heat exchange coil (14) and a first water distributor are arranged in turn above the V-shaped packing (12), and a first circulating water tank (27) is arranged below the V-shaped packing (12), and the first circulating water tank (27) passes through the first A water supply pipe (13) is connected to the first water distributor, the water inlet of the heat exchange coil (14) is connected to the third water pipe (G3), and the water outlet of the heat exchange coil (14) is connected to a low-temperature water outlet. A water pipe (23), the low-temperature water outlet pipe (23) is connected to the sump (2) through the first water pipe (G1); The vertical pipe type indirect evaporative cooler includes a vertical heat exchange tube group (11), a second water distributor is arranged above the vertical heat exchange tube group (11), and the vertical heat exchange tube A second circulating water tank (28) is arranged below the group (11), and the second circulating water tank (28) is connected to the second water distributor through a second water supply pipe (29). 8. The cooling system for a power plant according to claim 7, characterized in that, a circulating water pump is provided on the first water supply pipe (13) and the second water supply pipe (29); The circulating water pumps are all connected to the power controller (30) through the power cord; the exhaust fan (26) is also connected to the power controller (30) through the power cord.