Automatic distribution structure for circulating water cooling devices of power plants

Abstract

The present application relates to the field of circulating water cooling of power plants, in particular to an automatic distribution structure of a circulating water cooling device of a power plant, which solves the problems of large water resource loss of the existing cooling tower, large input of the existing cooling tower filler and related cooling equipment such as high-temperature cooling water spraying pipeline system, winter insulation and large operation noise, comprising a main frame, a cooling cylinder is arranged on the main frame, the upper end of the cooling cylinder is used for connecting a high-temperature cooling water output pipeline of a power plant, a pre-cooling assembly is arranged on the main frame and is used for mixing external air with high-temperature cooling water entering the cooling cylinder, and a condensing mechanism is arranged on the main frame and is used for reducing the temperature of the high-temperature cooling water. The present application can prevent steam escape and avoid water resource waste, the pre-cooling assembly can significantly improve the cooling efficiency of the high-temperature cooling water, and the whole cooling process is carried out in the cooling cylinder, so that the noise can be significantly reduced through the cooling cylinder, thereby reducing the cost of investment in noise reduction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circulating water cooling of power plants, in particular to an automatic distribution structure of a circulating water cooling device of a power plant. BACKGROUND

[0002] In the thermal cycle process of a thermal power plant, high-temperature and high-pressure steam generated by a boiler enters a steam turbine to do work, and the steam releasing heat potential is discharged from the exhaust port at the lower part of the steam turbine. This part of steam is called exhaust steam, which is discharged into a condenser. A large number of cooling water pipes are arranged in the condenser, and cooling water (usually circulating water) flows through the pipes. The exhaust steam contacts the outer surface of the cooling water pipes. Since the temperature of the cooling water in the cooling water pipes is relatively low, the exhaust steam is rapidly cooled and condensed into water, releasing a large amount of heat. These heat exchanges with the cooling water in the cooling water pipes. The high-temperature cooling water generated during the operation of the thermal power generator needs to be cooled in a cooling tower. For example, the temperature of the circulating water entering the cooling tower can reach 40-50℃. After being cooled in the cooling tower, the circulating water is cooled, so that it can re-enter the condenser for the next round of heat absorption.

[0003] The existing thermal cooling tower has the following improvement points in the process of cooling high-temperature cooling water:

[0004] 1. During the process of high-temperature cooling water passing through the filler, although most of the heat can be reduced, at least 2% of the water evaporates according to incomplete statistics, and the evaporation water volume is not less than 1 million to 2 million cubic meters, causing water resource waste;

[0005] 2. In winter, in order to prevent the cooling water from being blown out of the pool by side wind during falling into the pool, and also to avoid air convection in winter, the temperature is too low, causing ice hanging in the cooling tower, and the filler gap is blocked. A wind screen needs to be installed around the cooling tower to play a heat preservation role. The manpower and material resources required for this winter heat preservation work are very high;

[0006] 3. The existing cooling tower internal facilities, such as water saver and a large amount of filler and pool bottom dredging, require a large annual maintenance cost;

[0007] 4. The noise during the natural falling process of the cooling water is very large, and the power plant also has a large expenditure on noise reduction.

[0008] In summary, the present application provides an automatic distribution structure of a circulating water cooling device of a power plant to solve the above problems, reduce water resource loss, existing cooling tower filler usage, and related cooling equipment such as high-temperature cooling water spraying pipeline system, and other material inputs, winter heat preservation problems, and large operating noise problems. SUMMARY

[0009] In view of the above situation and to overcome the defects of the prior art, the present invention provides an automated distribution structure for a power plant circulating water cooling device, so as to solve the problems of large water resource loss of existing cooling towers, large amount of material input of existing cooling tower packing and related cooling equipment such as high temperature cooling water spray pipeline system, winter heat preservation problem and high operating noise.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0011] An automated distribution structure for a power plant circulating water cooling device includes a main frame, on which a cooling cylinder is mounted, the upper end of which is used to connect to a high-temperature cooling water output pipe of the power plant. A pre-cooling component is mounted on the main frame to mix external air with the high-temperature cooling water entering the cooling cylinder.

[0012] The main frame is equipped with a condensation mechanism to reduce the temperature of the high-temperature cooling water;

[0013] The condensation mechanism includes a cooling water tank and a spiral condenser tube. The spiral condenser tube is installed inside the cooling cylinder, and the cooling water in the cooling water tank can circulate inside the spiral condenser tube.

[0014] The cooling water tank has several vertical strip-shaped heat conduction grooves on its side, and heat dissipation fins are slidably arranged in the strip-shaped heat conduction grooves. All of the heat dissipation fins are divided into two groups according to the number of fins. The surface of the cooling water tank is provided with two insulation plates, and the two insulation plates cooperate to completely wrap the side surface of the cooling water tank. The two groups of heat dissipation fins are fixed to the inner walls of the two insulation plates respectively.

[0015] An air guide hood is provided on the main frame, and a sealing plate is fixed to the side of the insulation board, and the sealing plate slides and seals with the bottom of the air guide hood.

[0016] The main frame is equipped with an air supply assembly for supplying air to the precooling assembly and the air guide shroud. The air supply assembly includes a housing, and a drive mechanism is provided inside the housing. When the airflow inside the housing gradually increases, the kinetic energy of the airflow will cause the drive mechanism to drive the two insulation plates to gradually move away from each other, so that the heat sink and the strip heat conduction groove are separated. When the airflow inside the housing gradually decreases, the two insulation plates will move closer to each other until they are in contact with the surface of the cooling water tank.

[0017] Preferably, the condensation mechanism includes a circulation pump, the pump's pumping end is connected to the bottom of the cooling water tank, and the pump's output end is connected to the lower end of the spiral condenser tube via an input pipe. The upper end of the spiral condenser tube is connected to the upper end of the cooling water tank via a return pipe. Several vertical air guide channels are provided inside the cooling water tank for airflow. Baffles are fixed on both the upper and lower sides of the insulation plate to block the ends of the air guide channels.

[0018] Preferably, the cooling water tank top and bottom are provided with circulation pipes, two circulation pipes are used to connect the cooled cooling water pipe and the uncooled cooling water pipe of the power plant cooling water circulation system respectively, the circulation pipes are provided with one-way electromagnetic valves, and the return pipes are provided with temperature sensors.

[0019] Preferably, the pre-cooling assembly comprises a second air supply pipe, a first air supply pipe and a fairing, one end of the second air supply pipe is communicated with the shell, the other end penetrates into the cooling cylinder and is communicated with an airflow dispersing pipe, the airflow dispersing pipe is vertically arranged in the cooling cylinder, the upper end of the airflow dispersing pipe is conical, and is used for uniformly dispersing high-temperature cooling water, and a plurality of through holes are formed in the surface of the airflow dispersing pipe.

[0020] Preferably, the fairing is arranged on the surface of the cooling cylinder, the bottom of the fairing is open, a plurality of vertical cooling fins two are annularly arranged between the inner wall of the fairing and the surface of the cooling cylinder, one end of the first air supply pipe is communicated with the shell, the other end is communicated with a plurality of branch pipes, and the other ends of the plurality of branch pipes are uniformly arranged on the top of the fairing and communicated with the fairing.

[0021] Preferably, the shell is communicated with the air guide cover through a third air supply pipe, the bottom of the shell is provided with a fan, at least four horn mouths are annularly arranged on the surface of the shell, the horn mouths are communicated with the shell, one-way valves are arranged in the horn mouths, and the one-way valves prevent the airflow in the shell from flowing to the outside through the horn mouths.

[0022] Preferably, the driving mechanism comprises a fixed frame, the fixed frame is arranged on the main body frame, a guide rod is horizontally arranged on the fixed frame, two connecting plates are slidably arranged on the guide rod, the two connecting plates are respectively fixed with two heat preservation plates, a tension spring is sleeved on the surface of the guide rod, and the two ends of the tension spring are respectively fixed with the two connecting plates, the two connecting plates are respectively fixed with top rods, the two top rods respectively penetrate through the two sides of the shell, two movable plates are rotatably arranged on the opposite surfaces of the two inner walls in the shell, the two movable plates are mutually symmetrical, and the opposite surfaces of the two movable plates are respectively corresponded with the opposite ends of the two top rods, a support plate is fixed in the shell, and the two support plates are supported, so that the upper sides of the two support plates maintain a distance.

[0023] Preferably, the bottom of the cooling cylinder is communicated with an energy recovery mechanism, which is used for converting the kinetic energy of the low-temperature cooling water and airflow flowing downward in the cooling cylinder into electric energy, and supplying the electric appliances of the condensing mechanism and the air supply assembly.

[0024] Preferably, the energy recovery mechanism comprises a vertical pipe, the vertical pipe is communicated with the bottom of the cooling cylinder, the lower end of the vertical pipe is communicated with an outer cover, the outer cover is fixed on the main body frame, a rotating shaft is rotatably arranged in the outer cover, and a impeller is fixed on the surface of the rotating shaft, a generator and a storage battery are fixed on the main body frame, the rotating shaft of the generator is connected with the rotating shaft, and the output end of the generator is connected with the input end of the storage battery.

[0025] Preferably, the bottom of the cover is communicated with a separation tank through a connecting pipe, the separation tank is fixed on the main frame, the top of the separation tank is open, the bottom is provided with a low-temperature cooling water output pipe, a sponge for absorbing water is arranged in the separation tank, and the sponge is located at the end of the connecting pipe.

[0026] The present application has the following advantages:

[0027] 1. The high-temperature cooling water cooling process can be carried out in a closed space by cooperating the cooling cylinder with the pre-cooling assembly and the condensing mechanism, so as to prevent steam from escaping and avoid water resource waste. The pre-cooling assembly can significantly improve the cooling efficiency of the high-temperature cooling water. Since the whole cooling process is carried out in the cooling cylinder, the noise can be significantly reduced, thereby reducing the cost of noise reduction.

[0028] 2. The device can automatically adjust the cooling water tank air contact area according to the seasonal temperature by cooperating the air supply assembly with the driving assembly, the heat preservation plate, the heat dissipation fin I and the strip-shaped heat conduction groove, so as to realize that the cooling water tank can be efficiently cooled in high-temperature weather, and the cooling water tank can enter the heat preservation state in low-temperature weather to avoid freezing and ensure that the device can continuously operate. The mechanical linkage design makes the device easy to operate, and significantly reduces the winter heat preservation cost compared with the prior art.

[0029] 3. The natural wind is absorbed through the horn mouth to reduce the power consumption of the fan. The kinetic energy of the cooling water and airflow flowing downward in the cooling cylinder is recovered by the energy recovery mechanism and converted into electric energy to supply the electric appliances of the condensing mechanism and the air supply assembly, so as to improve the energy self-sufficiency rate of the equipment, thereby reducing the overall power consumption of the equipment and achieving energy saving and emission reduction. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a front view of the present application;

[0031] Figure 2 It is a perspective view of the present application;

[0032] Figure 3 It is another perspective view of the present application;

[0033] Figure 4 It is a right view of the shell of the present application;

[0034] Figure 5 It is a right view of the energy recovery mechanism of the present application;

[0035] Figure 6 It is a perspective view of the energy recovery mechanism of the present application;

[0036] Figure 7This is a three-dimensional structural diagram of the driving mechanism of the present invention;

[0037] Figure 8 This is a schematic diagram of the unfolded structure of the insulation board of the present invention;

[0038] Figure 9 This is a three-dimensional structural diagram of the cooling water tank of the present invention;

[0039] Figure 10 This is a schematic diagram of the three-dimensional structure of the main frame of the present invention;

[0040] Figure 11 This is a three-dimensional view of the airflow dispersion tube of the present invention;

[0041] Figure 12 This is a perspective view of the spiral condenser tube of the present invention.

[0042] In the diagram: 1. Main frame; 2. Pre-cooling assembly; 3. Cooling cylinder; 4. Condensation mechanism; 5. Energy recovery mechanism; 6. Air supply assembly; 7. Shell; 8. Fan; 9. Nozzle; 10. One-way valve; 11. Drive mechanism; 12. Insulation plate; 13. Air guide shroud; 14. Sealing plate; 15. Cooling water tank; 16. Heat sink 1; 17. Spiral condenser tube; 18. Circulation pump; 19. Inlet pipe; 20. Return pipe; 21. Movable plate; 22. Top rod; 23. Support plate; 24. Connecting plate; 25. Guide rod; 26. Pull 27. Spring; 28. Fixing frame; 29. ​​Vertical pipe; 30. Outer cover; 31. Rotating shaft; 32. Impeller; 33. Connecting pipe; 34. Separator tank; 35. Sponge; 36. Low temperature cooling water output pipe; 37. Generator; 38. Storage battery; 39. Heat sink 2; 40. Airflow dispersion pipe; 41. Rectifier; 42. Branch pipe; 43. Air supply duct 1; 44. Air supply duct 2; 45. Strip heat conduction groove; 46. Air guide channel; 47. Baffle; 48. Circulation pipe; 49. One-way solenoid valve; 50. Temperature sensor. Detailed Implementation

[0043] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0044] An automated distribution structure for a power plant circulating water cooling system, as shown in the attached diagram. Figures 1-12 As shown, it includes a main frame 1, a cooling cylinder 3 is provided on the main frame 1, the upper end of which is used to connect to the high temperature cooling water output pipe of the power plant, a pre-cooling component 2 is provided on the main frame 1, which is used to mix the outside air with the high temperature cooling water entering the cooling cylinder 3, and a condensation mechanism 4 is provided on the main frame 1, which is used to reduce the temperature of the high temperature cooling water.

[0045] The condensing mechanism 4 comprises a cooling water tank 15 and a spiral condensing pipe 17, the spiral condensing pipe 17 is arranged in the cooling cylinder 3, the cooling water in the cooling water tank 15 can flow in the spiral condensing pipe 17, the spiral condensing pipe 17 is in contact with the inner wall of the cooling cylinder 3, so that the speed of the high-temperature cooling water flowing downward can be reduced, and the contact time with the spiral condensing pipe 17 is increased, a plurality of vertical strip-shaped heat-conducting grooves 45 are formed in the side surface of the cooling water tank 15, and heat dissipation fins 16 are slidably arranged in the strip-shaped heat-conducting grooves 45, and all the heat dissipation fins 16 are equally divided into two groups, two heat preservation plates 12 are arranged on the surface of the cooling water tank 15, and the two heat preservation plates 12 can completely wrap the side surface of the cooling water tank 15, and the two groups of heat dissipation fins 16 are fixed to the inner walls of the two heat preservation plates 12 respectively.

[0046] In winter, since the pre-cooling assembly 2 has absorbed a large amount of heat of the high-temperature cooling water, the spiral condensing pipe 17 absorbs little heat, and the cooling water tank 15 does not need to dissipate heat efficiently, in order to avoid freezing of the cooling water tank 15, the cooling water tank 15 is wrapped by the two heat preservation plates 12, and the heat dissipation fins 16 are completely overlapped with the strip-shaped heat-conducting grooves 45 at this time, so that the contact area of the cooling water tank 15 with air is reduced to a minimum.

[0047] The main frame 1 is provided with a wind deflector 13, the heat preservation plate 12 is fixed with a sealing plate 14, and the sealing plate 14 is in sliding sealing with the bottom of the wind deflector 13, the top of the cooling water tank 15 is in cooperation with the sealing plate 14, so that the bottom of the wind deflector 13 is completely blocked, air flow is prevented from flowing on the surface of the cooling water tank 15, and the cooling water tank 15 is further prevented from losing temperature.

[0048] The main frame 1 is provided with an air supply assembly 6 for supplying air to the pre-cooling assembly 2 and the wind deflector 13, the air supply assembly 6 comprises a shell 7, and a driving mechanism 11 is arranged in the shell 7, when the air flow in the shell 7 gradually increases, the kinetic energy of the air flow can drive the two heat preservation plates 12 to gradually move away from each other, so that the heat dissipation fins 16 and the strip-shaped heat-conducting grooves 45 are spaced apart, when the air flow in the shell 7 gradually decreases, the two heat preservation plates 12 will move close to each other until they are attached to the surface of the cooling water tank 15.

[0049] In winter, the air supply assembly 6 can ensure the cooling effect by running at low power, when running at low power, the air flow in the shell 7 has low flow rate, and the kinetic energy is not enough to pull the two heat preservation plates 12 away from each other, so the condensing mechanism 4 will automatically enter the heat preservation state, that is, the heat preservation plate 12 is attached to the surface of the cooling water tank 15, and manual operation is not needed, the automatic design of mechanical linkage can reduce the cost and operation difficulty of the equipment.

[0050] As shown in the accompanying drawings, Figure 5 , 7The condensing mechanism 4 includes a circulating pump 18, the water suction end of the circulating pump 18 is communicated with the bottom of the cooling water tank 15, the output end of the circulating pump 18 is communicated with the lower end of the spiral condensing pipe 17 through an input pipe 19, the upper end of the spiral condensing pipe 17 is communicated with the upper end of the cooling water tank 15 through a return pipe 20, a plurality of vertical air guide channels 46 are arranged in the cooling water tank 15 for air flow, and baffles 47 are arranged on the upper and lower sides of the heat preservation plate 12 for shielding both ends of the air guide channels 46. The air guide channels 46 are arranged to further increase the contact area between the cooling water tank 15 and the air, thereby improving the heat dissipation efficiency. According to the above description, when the condensing mechanism 4 is in the heat preservation state in winter, the baffles 47 can block the air guide channels 46.

[0051] As shown in the accompanying drawings Figure 5 , 7 The top and bottom of the cooling water tank 15 are provided with circulating pipes 48, the two circulating pipes 48 are respectively used for connecting the cooled cooling water pipe and the cooling water pipe without cooling of the power plant cooling water circulation system, the circulating pipes 48 are provided with one-way electromagnetic valves 49, and the return pipe 20 is provided with a temperature sensor 50.

[0052] From the perspective of safety redundancy, an alternative solution needs to be designed for the condensing mechanism 4 of the equipment. If a special situation occurs, for example, the fan 8 is damaged, which reduces the heat dissipation efficiency of the condensing mechanism 4. At this time, if the temperature detected by the return pipe 20 is too high, it represents that the heat rate of the spiral condensing pipe 17 is reduced. In order to ensure that the equipment can continuously and efficiently exchange heat, at this time, the two one-way electromagnetic valves 49 need to be opened, so that the cooling water in the cooling water tank 15 participates in the circulation of the central cooling water system of the power plant, and the low-temperature cooling water of the central cooling system is absorbed into the cooling water tank 15, so as to ensure that the spiral condensing pipe 17 can maintain a high heat exchange rate. Through the cooperation of the two circulating pipes 48, the two one-way electromagnetic valves 49 and the temperature sensor 50, the automatic distribution of the cooling water of the power plant is realized, so as to ensure that the equipment can continuously operate and always maintain the best energy-saving state. Once the automatic cooling of the equipment can be restored, the temperature detected by the temperature sensor 50 is reduced, and the one-way electromagnetic valve 49 is automatically closed, so as to avoid that the equipment occupies the resources of the central cooling system.

[0053] As shown in the accompanying drawings Figure 3 , 5As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water.

[0054] As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water. Figure 1 、 6 As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water.

[0055] As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water. Figure 2 、 3 As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water.

[0056] As shown in FIG. 6, 7 and 11, the pre-cooling assembly 2 comprises the air supply pipe two 43, the air supply pipe one 42 and the fairing 40, one end of the air supply pipe two 43 is communicated with the shell 7, the other end penetrates into the cooling cylinder 3 and is communicated with the airflow dispersing pipe 39, the airflow dispersing pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the airflow dispersing pipe 39 is tapered for uniformly dispersing the high-temperature cooling water, a plurality of through holes are arranged on the surface of the airflow dispersing pipe 39 and are inclined downward, so that the high-temperature cooling water can be prevented from entering the airflow dispersing pipe 39 through the through holes, and the air can be uniformly dispersed by the airflow dispersing pipe 39 so as to be quickly mixed with the high-temperature cooling water. Figure 4 、 7As shown, the driving mechanism 11 comprises a fixed frame 27 arranged on the main body frame 1, a guide rod 25 horizontally arranged on the fixed frame 27, two connecting plates 24 slidingly arranged on the guide rod 25, the two connecting plates 24 being fixed with the two heat preservation plates 12 respectively, a tension spring 26 sleeved on the surface of the guide rod 25 and fixed at both ends with the two connecting plates 24 respectively, two top rods 22 fixed on the opposite surfaces of the two connecting plates 24, the two top rods 22 penetrating through the two sides of the shell 7 respectively, two movable plates 21 rotatably arranged on the opposite surfaces of the two inner walls in the shell 7, the two movable plates 21 being mutually symmetrical and the opposite surfaces of the two movable plates 21 corresponding with the opposite ends of the two top rods 22 respectively, and a support plate 23 fixed in the shell 7 for supporting the two support plates 23 so that the upper sides of the two support plates 23 maintain a distance.

[0057] When the airflow flow rate in the shell 7 is high, the airflow will push the two movable plates 21 so that the originally inclined movable plates 21 tend to be vertical, at which time the movable plates 21 will push the top rods 22 so that the two top rods 22 move away from each other, and the top rods 22 can drive the two heat preservation plates 12 to move away from each other through the connecting plates 24. When the airflow flow rate in the shell 7 is low, the two movable plates 21 will move close to each other under the counteracting force of the top rods 22, and when the distance between the upper sides of the two movable plates 21 is the smallest, the heat preservation plates 12 are attached to the surface of the cooling water tank 15, and even when the distance between the upper sides of the two movable plates 21 is the smallest, there is still a distance for the airflow to pass through so that the airflow is delivered into the pre-cooling assembly 2.

[0058] As shown in the accompanying drawings, Figure 5 , 6 The cooling cylinder 3 is communicated with an energy recovery mechanism 5 at the bottom, which is used to convert the kinetic energy of the low-temperature cooling water and airflow flowing downward in the cooling cylinder 3 into electric energy and supply the electric appliances of the condensing mechanism 4 and the air supply assembly 6.

[0059] As shown in the accompanying drawings, Figure 5 , 6 The energy recovery mechanism 5 comprises a vertical pipe 28 communicated with the bottom of the cooling cylinder 3, an outer cover 29 communicated with the lower end of the vertical pipe 28 and fixed on the main body frame 1, a rotating shaft 30 rotatably arranged in the outer cover 29, an impeller 31 fixed on the surface of the rotating shaft 30, a generator 36 and a storage battery 37 fixed on the main body frame 1, the rotor shaft of the generator 36 being connected with the rotating shaft 30, the output end of the generator 36 being connected with the input end of the storage battery 37, and the air and low-temperature cooling water in the vertical pipe 28 pushing the impeller 31 to rotate the generator 36 through the rotating shaft 30 so as to generate electricity.

[0060] As shown in the accompanying drawings, Figure 5 , 6As shown, the bottom of the cover 29 is communicated with a separation tank 33 through a connecting pipe 32, the separation tank 33 is fixed on the main frame 1, the top of the separation tank 33 is open, the bottom is provided with a low-temperature cooling water output pipe 35, a sponge 34 for absorbing water is arranged in the separation tank 33, and the sponge 34 is located away from the end of the connecting pipe 32, the low-temperature cooling water output pipe 35 is communicated with the water circulation system of the power plant, and the low-temperature cooling water can also be directly discharged into the pool at the bottom of the cooling tower, the air entering the separation tank 33 through the cover 29 and the low-temperature cooling water, wherein the low-temperature cooling water flows out through the low-temperature cooling water output pipe 35 naturally, the upper end of the separation tank 33 is larger than the end of the low-temperature cooling water output pipe 35, the air passes through the sponge 34 to separate from the separation tank 33 and enters the environment, the small water droplets carried in the airflow can be absorbed through the sponge 34, and the water droplets drop downward after the sponge 34 is saturated with water.

[0061] Working principle:

[0062] The high-temperature cooling water is input into the cooling cylinder 3, the high-temperature cooling water flows from top to bottom in the cooling cylinder 3, the air supply assembly 6 can deliver air into the pre-cooling assembly 2 and the condensing mechanism 4, the air is mixed with the high-temperature cooling water entering the cooling cylinder 3 through the pre-cooling assembly 2 to achieve rapid cooling, and the pre-cooled cooling water flows downward to contact the spiral condensing pipe 17 for heat exchange to be further cooled;

[0063] The cooling water in the spiral condensing pipe 17 circulates in the cooling water tank 15, it should be noted that in winter, due to the very low ambient temperature, the pre-cooling assembly 2 can absorb most of the heat of the high-temperature cooling water, and the condensing mechanism 4 absorbs very low heat, so the air supply assembly 6 will be in low-power operation, and the thermal insulation plate 12 will be attached to the surface of the cooling water tank 15, and the airflow in the air guide cover 13 cannot flow due to the blockage of the top of the cooling water tank 15 and the sealing plate 14, thereby avoiding the temperature of the cooling water tank 15 being too low to cause the cooling water to freeze;

[0064] In summer, the ambient temperature rises, and the condensing mechanism 4 needs to cooperate with the pre-cooling assembly 2 to rapidly cool the high-temperature cooling water, at which time the air supply assembly 6 will increase the operating power to increase the airflow velocity in the shell 7, when the airflow velocity increases, the kinetic energy of the airflow is converted into the pulling force on the thermal insulation plate 12 through the driving mechanism 11, so that the thermal insulation plate 12 moves away from the surface of the cooling water tank 15, so that the surface of the cooling water tank 15 is in contact with the air, and the strip-shaped heat conduction groove 45 moves with the thermal insulation plate 12 to make the strip-shaped heat conduction groove 45 in contact with the air, thereby significantly increasing the contact area between the cooling water tank 15 and the air, the airflow entering the air guide cover 13 blows against the surface of the cooling water tank 15, thereby being able to efficiently cool the cooling water tank 15, the greater the air flow delivered by the air supply assembly 6, the smaller the overlapping area between the strip-shaped heat conduction groove 45 and the heat dissipation fin one 16, the greater the contact area between the cooling water tank 15 and the air, and the higher the heat dissipation efficiency, and vice versa;

[0065] The natural wind can be absorbed by the horn mouth 9, so as to reduce the power consumption of the fan 8. The kinetic energy of the cooling water and air flowing downwards in the cooling cylinder 3 is recovered by the energy recovery mechanism 5 and converted into electric energy, which is supplied to the electric appliances of the condensing mechanism 4 and the air supply assembly 6. The energy self-sufficiency rate of the device can be improved, and the overall power consumption of the device can be reduced, thereby achieving energy saving and emission reduction.

[0066] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0067] In addition, it should be further pointed out that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

Claims

1. An automated distribution structure of a circulating water cooling device of a power plant, comprising a main body frame (1), characterized in that, The main frame (1) is provided with a cooling cylinder (3), the upper end of which is used for connecting the high-temperature cooling water output pipeline of the power plant, and a pre-cooling assembly (2) is arranged on the main frame (1) and used for mixing external air with high-temperature cooling water entering the cooling cylinder (3); The main frame (1) is provided with a condensing mechanism (4) for reducing the temperature of the high-temperature cooling water; The condensing mechanism (4) comprises a cooling water tank (15) and a spiral condensing pipe (17), the spiral condensing pipe (17) is arranged in the cooling cylinder (3), and the cooling water in the cooling water tank (15) can flow in the spiral condensing pipe (17) in a circulating manner; A plurality of vertical strip-shaped heat-conducting grooves (45) are formed in the side surface of the cooling water tank (15), and a heat dissipation fin (16) is slidably arranged in each strip-shaped heat-conducting groove (45), and all the heat dissipation fins (16) are equally divided into two groups, two heat insulation plates (12) are arranged on the surface of the cooling water tank (15), the side surface of the cooling water tank (15) can be completely wrapped by the two heat insulation plates (12) in cooperation, and the two groups of heat dissipation fins (16) are fixed to the inner walls of the two heat insulation plates (12) respectively. The main frame (1) is provided with a wind guide cover (13), the heat insulation plate (12) is fixed with a sealing plate (14), and the sealing plate (14) is in sliding sealing with the bottom of the wind guide cover (13); The main frame (1) is provided with an air supply assembly (6) for supplying air to the pre-cooling assembly (2) and the wind guide cover (13), the air supply assembly (6) comprises a shell (7), and a driving mechanism (11) is arranged in the shell (7), when the airflow in the shell (7) gradually increases, the kinetic energy of the airflow can drive the two heat insulation plates (12) to gradually move away from each other, so that the heat dissipation fin (16) and the strip-shaped heat-conducting groove (45) form a gap, and when the airflow in the shell (7) gradually decreases, the two heat insulation plates (12) will move close to each other until they are attached to the surface of the cooling water tank (15).

2. The automatic distribution structure of a power plant circulating water cooling device according to claim 1, characterized in that, The condensing mechanism (4) comprises a circulating pump (18), the circulating pump (18) is in communication with the bottom of the cooling water tank (15) through an input pipe (19), and the output end of the circulating pump (18) is in communication with the lower end of the spiral condensing pipe (17) through the input pipe (19), the upper end of the spiral condensing pipe (17) is in communication with the upper end of the cooling water tank (15) through a reflux pipe (20), a plurality of vertical air guide channels (46) are formed in the cooling water tank (15) and used for air flow, and baffles (47) are fixed to the upper and lower sides of the heat insulation plate (12) and used for shielding the two ends of the air guide channel (46).

3. The automated distribution structure of a power plant circulating water cooling device according to claim 2, characterized in that, The top and bottom of the cooling water tank (15) are provided with a circulating pipe (48), the two circulating pipes (48) are respectively used for connecting the cooled cooling water pipeline and the uncooled cooling water pipeline of the cooling water circulation system of the power plant, a one-way electromagnetic valve (49) is arranged on the circulating pipe (48), and a temperature sensor (50) is arranged on the reflux pipe (20).

4. The automated distribution structure of a power plant circulating water cooling device according to claim 1, characterized in that, The precooling component (2) includes a second air supply pipe (43), a first air supply pipe (42), and a shroud (40). One end of the second air supply pipe (43) is connected to the shell (7), and the other end is inserted into the cooling cylinder (3) and connected to an airflow dispersion pipe (39). The airflow dispersion pipe (39) is vertically arranged inside the cooling cylinder (3), and the upper end of the airflow dispersion pipe (39) is conical to uniformly disperse high-temperature cooling water. Several through holes are opened on the surface of the airflow dispersion pipe (39).

5. The automated distribution structure of a power plant circulating water cooling device according to claim 4, characterized in that, The shroud (40) is set on the surface of the cooling cylinder (3), and the bottom of the shroud (40) is open. Several vertical heat sinks (38) are distributed in a ring between the inner wall of the shroud (40) and the surface of the cooling cylinder (3). One end of the air supply pipe (42) is connected to the shell (7), and the other end is connected to several branch pipes (41). The other ends of the several branch pipes (41) are evenly distributed on the top of the shroud (40) and connected to it.

6. The automated distribution structure for a power plant circulating water cooling system of claim 1, wherein, The housing (7) is connected to the air guide shroud (13) through the air supply pipe (44). A fan (8) is provided at the bottom of the housing (7). At least four horn openings (9) are distributed in a ring on the surface of the housing (7). The horn openings (9) are connected to the housing (7). A one-way valve (10) is provided in the horn openings (9) to prevent the airflow inside the housing (7) from flowing to the outside through the horn openings (9).

7. The automated distribution structure of a power plant circulating water cooling device according to claim 1, characterized in that, The driving mechanism (11) includes a fixed frame (27) mounted on the main frame (1). A guide rod (25) is horizontally mounted on the fixed frame (27). Two connecting plates (24) are slidably mounted on the guide rod (25). The two connecting plates (24) are respectively fixed to two insulation boards (12). A tension spring (26) is sleeved on the surface of the guide rod (25), and both ends of the tension spring (26) are respectively fixed to the two connecting plates (24). Top rods (22) are fixed on opposite sides of plate (24). The two top rods (22) pass through both sides of the housing (7). Movable plates (21) are rotatably arranged on opposite sides of the two inner walls of the housing (7). The two movable plates (21) are symmetrical to each other, and the opposite sides of the two movable plates (21) correspond to the opposite ends of the two top rods (22). A support plate (23) is fixed inside the housing (7) to support the two support plates (23) and keep the upper side of the two support plates (23) at a distance.

8. The automated distribution structure for a power plant circulating water cooling system of claim 1, wherein, The bottom of the cooling cylinder (3) is connected to an energy recovery mechanism (5), which converts the kinetic energy of the low-temperature cooling water and airflow flowing downward in the cooling cylinder (3) into electrical energy and supplies it to the electrical appliances of the condensation mechanism (4) and the air supply assembly (6).

9. The automated distribution structure of a power plant circulating water cooling device according to claim 8, characterized in that, The energy recovery mechanism (5) includes a vertical pipe (28), which is connected to the bottom of the cooling cylinder (3). The lower end of the vertical pipe (28) is connected to an outer cover (29), and the outer cover (29) is fixed on the main frame (1). A rotating shaft (30) is rotatably arranged inside the outer cover (29). An impeller (31) is fixed on the surface of the rotating shaft (30). A generator (36) and a battery (37) are fixed on the main frame (1). The rotor shaft of the generator (36) is connected to the rotating shaft (30), and the output end of the generator (36) is connected to the input end of the battery (37).

10. The automated distribution structure of a power plant circulating water cooling device according to claim 9, characterized in that, The bottom of the outer cover (29) is connected to a separation tank (33) via a connecting pipe (32). The separation tank (33) is fixed on the main frame (1). The top of the separation tank (33) is open, and a low-temperature cooling water output pipe (35) is provided at the bottom. A sponge (34) for absorbing water is provided inside the separation tank (33), and the sponge (34) is misaligned with the end of the connecting pipe (32).

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