Automatic distribution structure of circulating water cooling device of power plant

Abstract

The invention relates to the field of power plant circulating water cooling, in particular to an automatic distribution structure of a power plant circulating water cooling device. The cooling tower solves the problems that an existing cooling tower is large in water resource loss, large in filler use amount of the existing cooling tower, large in investment of related cooling equipment such as a high-temperature cooling water spraying pipeline system and the like, large in winter heat preservation problem and large in operation noise, and comprises a main body frame, and a cooling cylinder is arranged on the main body frame. The upper end of the cooling cylinder is used for being connected with a power plant high-temperature cooling water output pipeline, and a pre-cooling assembly is arranged on the main body frame and used for mixing external air with high-temperature cooling water entering the cooling cylinder; a condensation mechanism is arranged on the main body frame and is used for reducing the temperature of the high-temperature cooling water. Steam escape can be prevented, water resource waste can be avoided, the cooling efficiency of high-temperature cooling water can be remarkably improved through the pre-cooling assembly, the whole cooling process is conducted in the cooling cylinder, noise can be remarkably reduced through the cooling cylinder, and therefore the input cost in the aspect of noise reduction is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of circulating water cooling of power plants, and in particular to an automatic distribution structure of a circulating water cooling device of a power plant. Background Art

[0002] In the thermal cycle of a thermal power plant, the high-temperature and high-pressure steam generated by the boiler enters the steam turbine to do work, and the steam that releases thermal potential energy is discharged from the exhaust port at the bottom of the steam turbine. This part of the steam is called exhaust steam. The exhaust steam is discharged into the condenser. A large number of cooling water pipes are arranged in the condenser. Cooling water (usually circulating water) flows through the pipes. The exhaust steam contacts the outer surface of the cooling water pipe. Since the temperature of the cooling water in the cooling water pipe is relatively low, the exhaust steam is quickly cooled and condensed into water, releasing a large amount of heat. This heat exchanges heat with the cooling water in the cooling water pipe. The high-temperature cooling water generated during the operation of the thermal power generating unit needs to enter the cooling tower for cooling. For example, the temperature of the circulating water entering the cooling tower may reach 40-50°C. After being cooled by 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 power cooling tower has the following improvements in the process of cooling high-temperature cooling water:

[0004] 1. Although most of the heat can be reduced when the high-temperature cooling water passes through the packing, according to incomplete statistics, at least 2% of the water evaporates, and the amount of evaporated water is not less than 1 million to 2 million cubic meters, resulting in a waste of water resources;

[0005] 2. In winter, in order to prevent the cooling water from being blown out of the pool by the side wind when it falls into the pool, and to avoid the air convection in winter, the temperature is too low, causing ice to hang in the cooling tower and the gaps in the filler to be blocked, it is necessary to install a windshield around the cooling tower to play a role in heat preservation. 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 economizers, a large amount of fillers, and dredging of the bottom of the pool, require high annual maintenance costs;

[0007] 4. The noise generated during the natural fall of cooling water is very loud, and the power plant also incurs a lot of noise reduction costs.

[0008] In summary, the present invention provides an automated distribution structure for a circulating water cooling device in a power plant to solve the above-mentioned problems, reduce water resource loss, the amount of existing cooling tower fillers and the input of related cooling equipment such as high-temperature cooling water spray pipe systems, winter insulation problems, and high operating noise problems. Summary of the invention

[0009] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automated distribution structure for a circulating water cooling device in a power plant to solve the problems of large water resource loss in existing cooling towers, large amount of existing cooling tower fillers and related cooling equipment such as high-temperature cooling water spray pipe systems, winter insulation problems and high operating noise.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] An automatic distribution structure of a circulating water cooling device of a power plant, comprising a main frame, a cooling cylinder is arranged on the main frame, the upper end of which is used to connect to a high-temperature cooling water output pipeline of the power plant, and a pre-cooling component is arranged on the main frame for mixing external air with the high-temperature cooling water entering the cooling cylinder;

[0012] The main frame is provided with a condensing mechanism for reducing the temperature of high-temperature cooling water;

[0013] The condensation mechanism comprises a cooling water tank and a spiral condenser tube, wherein the spiral condenser tube is arranged in the cooling cylinder, and the cooling water in the cooling water tank can circulate in the spiral condenser tube;

[0014] The side of the cooling water tank is provided with a plurality of vertical strip-shaped heat-conducting grooves, and a heat sink 1 is slidably arranged in the strip-shaped heat-conducting groove, and all the heat sink 1 are divided into two groups according to the number, and two heat-insulating plates are arranged on the surface of the cooling water tank, and the two heat-insulating plates can cooperate to completely wrap the side surface of the cooling water tank, and the two groups of heat sink 1 are respectively fixed to the inner walls of the two heat-insulating plates;

[0015] The main frame is provided with an air guide cover, a sealing plate is fixed to the side of the insulation board, and the sealing plate is slidably sealed with the bottom of the air guide cover;

[0016] The main frame is provided with an air supply assembly for conveying air to the pre-cooling assembly and the air guide hood. The air supply assembly includes a shell, and a driving mechanism is provided in the shell. When the airflow in the shell gradually increases, the kinetic energy of the airflow will prompt the driving mechanism to drive the two insulation plates to gradually move away from each other, so that a gap is generated between the heat sink and the strip heat conduction groove. When the airflow in the shell gradually decreases, the two insulation plates will approach 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 water pumping end of the circulation pump is connected to the bottom of the cooling water tank, and the output end of the circulation pump is connected to the lower end of the spiral condenser through an input pipe, and the upper end of the spiral condenser is connected to the upper end of the cooling water tank through a return pipe. A plurality of vertical air guide channels are opened in the cooling water tank for air flow, and baffles are fixed on the upper and lower sides of the insulation board to shield the two ends of the air guide channels.

[0018] Preferably, circulation pipes are provided at the top and bottom of the cooling water tank, and the two circulation pipes are respectively used to connect the cooled cooling water pipeline and the uncooled cooling water pipeline of the cooling water circulation system of the power plant. A one-way solenoid valve is provided on the circulation pipe, and a temperature sensor is provided on the return pipe.

[0019] Preferably, the precooling assembly includes air supply duct 2, air supply duct 1 and a fairing, one end of the air supply duct 2 is connected to the shell, and the other end penetrates into the cooling cylinder and is connected to an air flow dispersion pipe, the air flow dispersion pipe is vertically arranged in the cooling cylinder, and the upper end of the air flow dispersion pipe is conical, which is used to evenly disperse the high-temperature cooling water, and a plurality of through holes are opened on the surface of the air flow dispersion pipe.

[0020] Preferably, the fairing is arranged on the surface of the cooling cylinder, and the bottom of the fairing is open, and a plurality of vertical heat sinks are distributed in a ring between the inner wall of the fairing and the surface of the cooling cylinder, and the air supply pipe is connected to the shell at one end and connected to a plurality of branch pipes at the other end, and the other ends of the plurality of branch pipes are evenly distributed on the top of the fairing and connected thereto.

[0021] Preferably, the shell is connected to the air guide cover through air supply pipe three, a fan is arranged at the bottom of the shell, at least four bell mouths are distributed in a ring on the surface of the shell, the bell mouths are connected to the shell, and a one-way valve is arranged in the bell mouth to prevent the airflow in the shell from flowing to the outside through the bell mouth.

[0022] Preferably, the driving mechanism includes a fixed frame, which is arranged on a main frame, and a guide rod is horizontally arranged on the fixed frame, and two connecting plates are slidably arranged on the guide rod, and the two connecting plates are respectively fixed to the two insulation plates, and a tension spring is sleeved on the surface of the guide rod, and the two ends of the tension spring are respectively fixed to the two connecting plates, and push rods are fixed to the opposite surfaces of the two connecting plates, and the two push rods respectively pass through the two sides of the shell, and movable plates are rotatably arranged on the opposite surfaces of the two inner walls in the shell, and the two movable plates are symmetrical with each other, and the back surfaces of the two movable plates correspond to the opposite ends of the two push rods respectively, and a support plate is fixed in the shell for supporting the two support plates so that the upper sides of the two support plates maintain a distance.

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

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

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

[0026] The beneficial effects of the present invention are:

[0027] 1. The cooling cylinder cooperates with the precooling component and the condensing mechanism to enable the high-temperature cooling water cooling process to be carried out in a closed space to prevent steam from escaping and avoid waste of water resources. The precooling component can significantly improve the cooling efficiency of the high-temperature cooling water, and since the entire cooling process is carried out in the cooling cylinder, the cooling cylinder can significantly reduce noise, thereby reducing the cost of noise reduction.

[0028] 2. Through the coordination of the air supply component with the drive component, the insulation plate, the heat sink and the strip heat conduction groove, the device can automatically adjust the contact area between the cooling water tank and the air according to the seasonal temperature, so that in high temperature weather, the cooling water tank can dissipate heat efficiently, and in low temperature weather, the cooling water tank can enter the insulation state to avoid ice hanging and freezing, thereby ensuring that the device can operate continuously. The use of this mechanical linkage design makes the device easy to operate and significantly reduces the cost of winter insulation operations compared to the existing technology.

[0029] 3. By setting a bell mouth to absorb natural wind and reduce the power consumption of the fan, the kinetic energy of the cooling water and airflow flowing downward in the cooling cylinder is recovered through the energy recovery mechanism and converted into electrical energy to supply the electrical appliances of the condensing mechanism and the air supply components, which can improve the energy self-sufficiency rate of the equipment, thereby reducing the overall power consumption of the equipment and saving energy and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 It is a stereogram of the present invention;

[0032] Figure 3 It is another perspective stereogram of the present invention;

[0033] Figure 4 It is a schematic diagram of the right side cross-sectional structure of the housing of the present invention;

[0034] Figure 5 It is a schematic diagram of the right side cross-sectional structure of the energy recovery mechanism of the present invention;

[0035] Figure 6 It is a schematic diagram of the three-dimensional structure of the energy recovery mechanism of the present invention;

[0036] Figure 7It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention;

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

[0038] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cooling water tank of the present invention;

[0039] Fig.10 It is a schematic diagram of the three-dimensional structure of the main frame of the present invention;

[0040] Fig.11 A three-dimensional diagram of the air flow dispersion tube of the present invention;

[0041] Fig.12 It is a stereoscopic diagram of the spiral condenser of the present invention.

[0042] In the figure: 1. main frame; 2. pre-cooling assembly; 3. cooling cylinder; 4. condensing mechanism; 5. energy recovery mechanism; 6. air supply assembly; 7. shell; 8. fan; 9. bell mouth; 10. check valve; 11. driving mechanism; 12. insulation board; 13. air guide cover; 14. sealing plate; 15. cooling water tank; 16. heat sink 1; 17. spiral condenser; 18. circulation pump; 19. input pipe; 20. return pipe; 21. movable plate; 22. ejector rod; 23. support plate; 24. connecting plate; 25. guide rod; 26. pull plate Spring; 27, fixing frame; 28, vertical pipe; 29, outer cover; 30, rotating shaft; 31, impeller; 32, connecting pipe; 33, separation tank; 34, sponge; 35, low-temperature cooling water output pipe; 36, generator; 37, battery; 38, heat sink 2; 39, air flow dispersion pipe; 40, fairing; 41, branch pipe; 42, air supply pipe 1; 43, air supply pipe 2; 44, air supply pipe 3; 45, strip heat conduction groove; 46, air guide channel; 47, baffle; 48, circulation pipe; 49, one-way solenoid valve; 50, temperature sensor. DETAILED DESCRIPTION

[0043] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0044] An automatic distribution structure for circulating water cooling device of a power plant, as shown in the attached Figure 1-12 As shown, it includes a main frame 1, a cooling cylinder 3 is arranged on the main frame 1, and its upper end is used to connect the high-temperature cooling water output pipeline of the power plant, a pre-cooling component 2 is arranged on the main frame 1, and is used to mix the external air with the high-temperature cooling water entering the cooling cylinder 3, and a condensing mechanism 4 is arranged on the main frame 1, and is used to reduce the temperature of the high-temperature cooling water.

[0045] The condensing mechanism 4 includes a cooling water tank 15 and a spiral condenser 17. The spiral condenser 17 is arranged in the cooling tube 3. The cooling water in the cooling water tank 15 can circulate in the spiral condenser 17. The spiral condenser 17 contacts the inner wall of the cooling tube 3, thereby reducing the speed of the high-temperature cooling water flowing downward and increasing its contact time with the spiral condenser 17. A plurality of vertical strip heat conduction grooves 45 are opened on the side of the cooling water tank 15, and a heat sink 16 is slidably arranged in the strip heat conduction groove 45, and all the heat sinks 16 are divided into two groups according to the number. Two insulation plates 12 are arranged on the surface of the cooling water tank 15, and the two insulation plates 12 can cooperate to completely wrap the side surface of the cooling water tank 15, and the two groups of heat sinks 16 are respectively fixed to the inner walls of the two insulation plates 12.

[0046] In winter, since the pre-cooling component 2 has absorbed a large amount of heat from the high-temperature cooling water, the spiral condenser 17 absorbs very little heat, and the cooling water tank 15 does not need to dissipate heat efficiently. In order to prevent the cooling water tank 15 from freezing, the cooling water tank 15 is wrapped by two insulation plates 12. At that time, the heat sink 16 and the strip heat conduction groove 45 completely overlap, so that the contact area between the cooling water tank 15 and the air is reduced to a minimum.

[0047] An air guide hood 13 is provided on the main frame 1, and a sealing plate 14 is fixed to the side of the insulation plate 12, and the sealing plate 14 is slidably sealed with the bottom of the air guide hood 13. The sealing plate 14 cooperates with the top of the cooling water tank 15 to completely block the bottom of the air guide hood 13, thereby preventing airflow from circulating on the surface of the cooling water tank 15 and further preventing the cooling water tank 15 from losing temperature.

[0048] An air supply assembly 6 is provided on the main frame 1 for conveying air to the pre-cooling assembly 2 and the air guide cover 13. The air supply assembly 6 includes a shell 7, and a driving mechanism 11 is provided in the shell 7. When the airflow in the shell 7 gradually increases, the kinetic energy of the airflow will prompt the driving mechanism 11 to drive the two insulation plates 12 to gradually move away from each other, so that a gap is generated between the heat sink 16 and the strip heat conduction groove 45. When the airflow in the shell 7 gradually decreases, the two insulation plates 12 will approach each other until they are in contact with the surface of the cooling water tank 15.

[0049] In winter, the air supply component 6 can ensure the cooling effect by operating at low power. When operating at low power, due to the low air flow velocity in the shell 7, its kinetic energy is not enough to pull the two insulation plates 12 away from each other, so the condensing mechanism 4 will automatically be in the insulation state, that is, the insulation plate 12 is in contact with the surface of the cooling water tank 15, and no manual operation is required. The use of this mechanical linkage automation design can reduce the cost and operation difficulty of the equipment.

[0050] As attached Figure 5 , 7As shown in Figures 8, 9, 10 and 12, the condensing mechanism 4 includes a circulating pump 18, a water pumping end of the circulating pump 18 is connected to the bottom of the cooling water tank 15, and an output end of the circulating pump 18 is connected to the lower end of the spiral condenser 17 through an input pipe 19, and an upper end of the spiral condenser 17 is connected to the upper end of the cooling water tank 15 through a return pipe 20. A plurality of vertical air guide channels 46 are provided in the cooling water tank 15 for air flow. Baffles 47 are fixed on both the upper and lower sides of the insulation board 12 for shielding both ends of the air guide channels 46. The air guide channels 46 are provided to further increase the contact area between the cooling water tank 15 and the air, thereby improving the heat dissipation efficiency. Referring to the above content, when the condensing mechanism 4 is in a heat preservation state in winter, the baffle 47 can block the air guide channel 46.

[0051] As attached Figure 5 , 7 As shown in Figures 8, 9, 10 and 12, circulation pipes 48 are provided on the top and bottom of the cooling water tank 15. The two circulation pipes 48 are respectively used to connect the cooled cooling water pipeline and the uncooled cooling water pipeline of the cooling water circulation system of the power plant. A one-way solenoid valve 49 is provided on the circulation pipe 48, and a temperature sensor 50 is provided on the return pipe 20.

[0052] From the perspective of safety redundancy, it is necessary to design an alternative solution for the condensing mechanism 4 of the equipment. If special circumstances occur, such as damage to the fan 8, which causes the heat dissipation efficiency of the condensing mechanism 4 to decrease, if the temperature detected by the return pipe 20 is too high, it means that the heat rate of the spiral condenser 17 is reduced. In order to ensure that the equipment can continue to exchange heat efficiently, it is necessary to open the two one-way solenoid valves 49 to allow the cooling water in the cooling water tank 15 to participate in the circulation of the central cooling water system of the power plant, and absorb the low-temperature cooling water of the central cooling system into the cooling water tank 15 to ensure that the spiral condenser 17 can maintain a high efficiency in heat exchange. Through the cooperation of the two circulation pipes 48, the two one-way solenoid valves 49 and the temperature sensor 50, the automatic distribution of cooling water in the power plant is realized, ensuring that the equipment can continue to operate and always maintain the best energy-saving state. Once the automatic cooling of the equipment can be restored and the temperature detected by the temperature sensor 50 is reduced, the one-way solenoid valve 49 is automatically closed to prevent the equipment from occupying the resources of the central cooling system.

[0053] As attached Figure 3 , 5As shown in Figures 6, 7 and 11, the precooling assembly 2 includes an air supply pipe 43, an air supply pipe 42 and a fairing 40. One end of the air supply pipe 43 is connected to the shell 7, and the other end penetrates into the cooling cylinder 3 and is connected to an air flow dispersion pipe 39. The air flow dispersion pipe 39 is vertically arranged in the cooling cylinder 3, and the upper end of the air flow dispersion pipe 39 is conical, which is used to evenly disperse the high-temperature cooling water. A plurality of through holes are opened on the surface of the air flow dispersion pipe 39, and the through holes are inclined downward, so that the high-temperature cooling water can be prevented from entering the air flow dispersion pipe 39 through the through holes. The air is evenly dispersed through the air flow dispersion pipe 39, so that the air can quickly merge with the high-temperature cooling water.

[0054] As attached Figure 1 , 6 As shown in Figures 7 and 8, the fairing 40 is arranged on the surface of the cooling cylinder 3, and the bottom of the fairing 40 is open. A number of vertical heat sinks 38 are distributed in a ring between the inner wall of the fairing 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 a number of branch pipes 41, and the other ends of the branch pipes 41 are evenly distributed on the top of the fairing 40 and connected thereto. Since the high-temperature cooling water has a high temperature when it just enters the cooling cylinder 3, the cooling cylinder 3 itself will also absorb a large amount of heat. The heat exchange area between the surface of the cooling cylinder 3 and the air is increased by the heat sink 38, and the air is transported to the surface of the heat sink 38 through the fairing 40, which can further improve the heat dissipation efficiency of the pre-cooling component 2.

[0055] As attached Figure 2 , 3 As shown, the shell 7 is connected with the air guide cover 13 through the air supply pipe 44, a fan 8 is arranged at the bottom of the shell 7, and at least four bell mouths 9 are distributed in a ring on the surface of the shell 7, the bell mouths 9 are connected with the shell 7, and a one-way valve 10 is arranged in the bell mouth 9 to prevent the airflow in the shell 7 from flowing to the outside through the bell mouth 9. The device can be installed in a cooling tower of a power plant, and the airflow advantage of the cooling tower of the power plant is utilized to introduce natural wind into the shell 7 through the bell mouth 9, thereby reducing the power consumption of the fan 8.

[0056] As attached Figure 4 , 7As shown, the driving mechanism 11 includes a fixed frame 27, which is arranged on the main frame 1, and a guide rod 25 is horizontally arranged on the fixed frame 27. Two connecting plates 24 are slidably arranged on the guide rod 25, and the two connecting plates 24 are respectively fixed to the two insulation plates 12. A tension spring 26 is sleeved on the surface of the guide rod 25, and the two ends of the tension spring 26 are respectively fixed to the two connecting plates 24, and the opposite surfaces of the two connecting plates 24 are fixed with push rods 22, and the two push rods 22 respectively penetrate the two sides of the shell 7. The opposite surfaces of the two inner walls in the shell 7 are rotatably provided with movable plates 21, and the two movable plates 21 are symmetrical with each other, and the back faces of the two movable plates 21 correspond to the opposite ends of the two push rods 22 respectively. A support plate 23 is 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 spacing.

[0057] When the air flow velocity in the shell 7 is high, the air flow will push the two movable plates 21, making the originally inclined movable plates 21 tend to be vertical. At that time, the movable plates 21 will push the top rod 22, making the two top rods 22 move away from each other. The top rod 22 can drive the two insulation plates 12 to move away from each other through the connecting plate 24. When the air flow velocity in the shell 7 is low, the two movable plates 21 will approach each other under the reverse thrust of the top rod 22. When the upper side spacing of the two movable plates 21 is the smallest, the insulation plate 12 fits the surface of the cooling water tank 15. Even when the upper side spacing of the two movable plates 21 is the smallest, there is still a spacing for air flow to pass through, so that the air flow is transported to the pre-cooling component 2.

[0058] As attached Figure 5 , 6 As shown, the bottom of the cooling cylinder 3 is connected to an energy recovery mechanism 5 for converting the kinetic energy of the low-temperature cooling water and airflow flowing downward in the cooling cylinder 3 into electrical energy, and supplying the electrical appliances of the condensing mechanism 4 and the air supply assembly 6.

[0059] As attached Figure 5 , 6 As shown, the energy recovery mechanism 5 includes a vertical pipe 28, which is connected to the bottom of the cooling cylinder 3, and 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 in the outer cover 29, and 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. The air and low-temperature cooling water in the vertical pipe 28 push the impeller 31, and the impeller 31 rotates the generator 36 through the rotating shaft 30 to generate electricity.

[0060] As attached Figure 5 , 6As shown, the bottom of the outer cover 29 is connected to 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, and a low-temperature cooling water output pipe 35 is provided at the bottom. A sponge 34 for absorbing water is provided in the separation tank 33, and the sponge 34 is misaligned with the end of the connecting pipe 32. The low-temperature cooling water output pipe 35 is connected to the water circulation system of the power plant. The low-temperature cooling water can also be directly discharged into the water pool at the bottom of the cooling tower. The air and low-temperature cooling water enter the separation tank 33 through the outer cover 29, and the low-temperature cooling water naturally flows downward through the low-temperature cooling water output pipe 35. 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 and leaves the separation tank 33 to enter the environment. The sponge 34 can absorb small water droplets carried in the airflow. After the sponge 34 is saturated with water, the water droplets drip downward.

[0061] Working principle:

[0062] The high-temperature cooling water is input into the cooling cylinder 3, and the high-temperature cooling water flows from top to bottom in the cooling cylinder 3. The air supply component 6 can transport air to the precooling component 2 and the condensing mechanism 4. The air is mixed with the high-temperature cooling water entering the cooling cylinder 3 through the precooling component 2 to achieve rapid cooling. The precooled cooling water flows downward and contacts with the spiral condensing tube 17 for heat exchange, thereby further cooling the air.

[0063] The cooling water inside the spiral condenser tube 17 circulates in the cooling water tank 15. It should be noted that in winter, due to the very low ambient temperature, the precooling component 2 can absorb most of the heat of the high-temperature cooling water, and the heat absorbed by the condensing mechanism 4 is very low. Therefore, the air supply component 6 will be in low-power operation, and the insulation plate 12 will fit the surface of the cooling water tank 15. The airflow in the air guide cover 13 is blocked by the top of the cooling water tank 15 and the sealing plate 14 and cannot flow, thereby preventing the cooling water tank 15 from being too low in temperature and causing the cooling water to freeze;

[0064] In summer, when the ambient temperature rises, the condensing mechanism 4 needs to cooperate with the precooling component 2 to quickly cool down the high-temperature cooling water. At that time, the air supply component 6 will increase the operating power to increase the air flow rate in the shell 7. When the air flow rate increases, the kinetic energy of the air flow is converted into a pulling force on the insulation plate 12 through the driving mechanism 11, so that the insulation plate 12 is 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 heat sink 16 moves with the insulation plate 12 to make the strip 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 toward the surface of the cooling water tank 15, so that the cooling water tank 15 can be efficiently cooled. The larger the airflow delivered by the air supply component 6, the smaller the overlapping area of ​​the heat sink 16 and the strip heat conduction groove 45, the larger the contact area between the cooling water tank 15 and the air, and the higher the heat dissipation efficiency, and vice versa.

[0065] By setting the bell mouth 9, natural wind can be absorbed, thereby reducing the power consumption of the fan 8. The kinetic energy of the cooling water and airflow flowing downward in the cooling cylinder 3 is recovered through the energy recovery mechanism 5 and converted into electrical energy to supply the electrical appliances of the condensing mechanism 4 and the air supply component 6. The energy self-sufficiency rate of the equipment can be improved, thereby reducing the overall power consumption of the equipment, saving energy and reducing emissions.

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

[0067] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An automated distribution structure for a circulating water cooling device in a power plant, comprising a main frame (1), characterized in that: The main frame (1) is provided with a cooling cylinder (3), the upper end of which is used to connect to the high-temperature cooling water output pipeline of the power plant. The main frame (1) is provided with a precooling component (2) for mixing external air with the 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 high-temperature cooling water; The condensation mechanism (4) comprises a cooling water tank (15) and a spiral condenser tube (17); the spiral condenser tube (17) is arranged in the cooling cylinder (3); and the cooling water in the cooling water tank (15) can circulate in the spiral condenser tube (17); The side of the cooling water tank (15) is provided with a plurality of vertical strip-shaped heat-conducting grooves (45), and a heat sink (16) is slidably arranged in the strip-shaped heat-conducting grooves (45), and all the heat sinks (16) are divided into two groups according to the number, and two heat-insulating plates (12) are arranged on the surface of the cooling water tank (15), and the two heat-insulating plates (12) can cooperate to completely wrap the side surface of the cooling water tank (15), and the two groups of heat sinks (16) are respectively fixed to the inner walls of the two heat-insulating plates (12); The main frame (1) is provided with an air guide cover (13), a sealing plate (14) is fixed to the side of the insulation plate (12), and the sealing plate (14) is slidably sealed with the bottom of the air guide cover (13); The main frame (1) is provided with an air supply component (6) for conveying air to the precooling component (2) and the air guide cover (13). The air supply component (6) includes a shell (7), and a driving mechanism (11) is provided in the shell (7). When the airflow in the shell (7) gradually increases, the kinetic energy of the airflow will prompt the driving mechanism (11) to drive the two insulation plates (12) to gradually move away from each other, so that a gap is generated between the heat sink (16) and the strip-shaped heat conduction groove (45). When the airflow in the shell (7) gradually decreases, the two insulation plates (12) will move closer to each other until they are in contact with the surface of the cooling water tank (15).

2. The automatic distribution structure of a circulating water cooling device of a power plant according to claim 1, characterized in that: The condensation mechanism (4) comprises a circulation pump (18), the pumping end of the circulation pump (18) is connected to the bottom of the cooling water tank (15), and the output end of the circulation pump (18) is connected to the lower end of the spiral condenser (17) through an input pipe (19), and the upper end of the spiral condenser (17) is connected to the upper end of the cooling water tank (15) through a return pipe (20). A plurality of vertical air guide channels (46) are provided in the cooling water tank (15) for air flow, and baffles (47) are fixed on both upper and lower sides of the insulation plate (12) for shielding both ends of the air guide channels (46).

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

4. The automatic distribution structure of a circulating water cooling device of a power plant according to claim 1, characterized in that: The precooling assembly (2) comprises a second air supply pipe (43), an first air supply pipe (42) and a fairing (40); one end of the second air supply pipe (43) is connected to the shell (7), and the other end penetrates into the cooling cylinder (3) and is connected to an air flow dispersion pipe (39); the air flow dispersion pipe (39) is vertically arranged in the cooling cylinder (3), and the upper end of the air flow dispersion pipe (39) is conical for uniformly dispersing high-temperature cooling water; a plurality of through holes are provided on the surface of the air flow dispersion pipe (39).

5. The automatic distribution structure of the circulating water cooling device of a power plant according to claim 4 is characterized in that: The fairing (40) is arranged on the surface of the cooling cylinder (3), and the bottom of the fairing (40) is open. A plurality of vertical heat sinks (38) are distributed in a ring shape between the inner wall of the fairing (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 a plurality of branch pipes (41), and the other ends of the plurality of branch pipes (41) are evenly distributed on the top of the fairing (40) and are connected thereto.

6. The automatic distribution structure of the circulating water cooling device of a power plant according to claim 1 is characterized in that: The shell (7) is connected to the air guide cover (13) through the air supply pipe (44). A fan (8) is arranged at the bottom of the shell (7). At least four bell mouths (9) are distributed in an annular shape on the surface of the shell (7). The bell mouths (9) are connected to the shell (7). A one-way valve (10) is arranged in the bell mouth (9) to prevent the airflow in the shell (7) from flowing to the outside through the bell mouth (9).

7. The automatic distribution structure of a circulating water cooling device of a power plant according to claim 1, characterized in that: The driving mechanism (11) comprises a fixing frame (27), the fixing frame (27) being arranged on the main frame (1), a guide rod (25) being arranged horizontally on the fixing frame (27), two connecting plates (24) being slidably arranged on the guiding rod (25), the two connecting plates (24) being respectively fixed to the two insulation plates (12), a tension spring (26) being sleeved on the surface of the guiding rod (25), and the two ends of the tension spring (26) being respectively fixed to the two connecting plates (24), and the two connecting plates (24) being respectively fixed to the two insulation plates (12). The opposite surfaces of the plate (24) are fixed with push rods (22), and the two push rods (22) respectively penetrate the two sides of the shell (7). The opposite surfaces of the two inner walls in the shell (7) are rotatably provided with movable plates (21), and the two movable plates (21) are symmetrical to each other, and the back surfaces of the two movable plates (21) correspond to the opposite ends of the two push rods (22) respectively. A support plate (23) is 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 spacing.

8. The automatic distribution structure of a circulating water cooling device of a power plant according to claim 1, characterized in that: The bottom of the cooling cylinder (3) is connected to an energy recovery mechanism (5) for converting the kinetic energy of the low-temperature cooling water and airflow flowing downward in the cooling cylinder (3) into electrical energy and supplying the electrical appliances of the condensing mechanism (4) and the air supply assembly (6).

9. The automatic distribution structure of the circulating water cooling device of a power plant according to claim 8, characterized in that: The energy recovery mechanism (5) comprises a vertical pipe (28), wherein the vertical pipe (28) 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 in 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 automatic distribution structure of the circulating water cooling device of a power plant according to claim 9, characterized in that: The bottom of the outer cover (29) is connected to 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; a low-temperature cooling water output pipe (35) is provided at the bottom; a sponge (34) for absorbing water is provided in the separation tank (33); and the sponge (34) is misaligned with the end of the connecting pipe (32).

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