Anti-freezing and energy-saving device for cooling tower of thermal power plant
By setting up a water guide structure and a pump water rotation unit in the cooling tower, and using the water pump to provide flow power and stir the water body, the problem of high electric heating cost when the cooling tower is anti-freezing is solved, and energy-saving anti-freezing effect and operation efficiency are improved.
Patent Information
- Application Number
- CN202421028976.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The existing cooling towers rely on electric heating rods to prevent freezing in extreme cold conditions, resulting in high long-term operation costs and cannot meet the long-term anti-freezing needs.
A thermal power plant cooling tower anti-freeze energy-saving device is designed. By setting up a water guide structure and a pump water rotation unit, the water pump provides flow power to promote the circulation of water, and stir the water body in the collecting tank through a stirring assembly to prevent the water body from freezing. Reduce electricity costs.
The anti-freezing effect of water bodies under extreme cold conditions is achieved, the electricity cost is reduced, and the problem of water bodies being sprayed onto the condenser is avoided, and the operation efficiency of the cooling tower is improved.
Smart Images
Figure CN222165760U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling towers, and more specifically to an antifreeze and energy-saving device for a cooling tower of a thermal power plant. Background Art
[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. The cooling method uses the heat exchange between water and air flow to produce steam. The steam evaporates and takes away the heat to achieve the principles of evaporative heat dissipation, convection heat transfer and radiation heat transfer. It dissipates the waste heat generated in industry or refrigeration and air conditioning to lower the water temperature through evaporative heat dissipation to ensure the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower.
[0003] Patent No. CN 218937084 U discloses a cooling tower with antifreeze function, which belongs to the field of cooling tower technology. It includes a cooling tower body, a fan, a spray pipe and a filler rack are installed inside the cooling tower body, a water collecting tank is opened at the bottom of the cooling tower body, and a circulating water pipe and a water supply pipe are fixed on the outside of the cooling tower body. The cooling tower with antifreeze function is provided with an electric heating rod, which helps to cooperate with the insulation sleeve to ensure the temperature balance inside the cooling tower body and avoid the liquid in the water collecting tank from freezing. By providing an electric heating belt, the electric heating belt emits a certain amount of heat through the heating medium, and the loss of the heated pipe is supplemented by direct or indirect heat exchange to ensure the normal circulation of water inside the cooling tower. By providing a waterproof and thermal insulation canvas, the air intake of the blinds is reduced to avoid being invaded by external cold air, maintain the air inlet temperature, and ensure the normal operation of the cooling tower.
[0004] In the above patent, the inventor believes that although the patent provides heat sources through electric rod belts and electric heating rods to achieve antifreeze protection of the water body when in use, this method has the problem of high cost when operated for a long time and cannot meet the needs of long-term antifreeze use. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an antifreeze and energy-saving device for a cooling tower in a thermal power plant. The technical problem to be solved by the utility model is: although the current cooling tower uses electric rod belts and electric heating rods to provide heat sources to achieve antifreeze protection of the water body, this method has the problem of high cost in long-term operation and cannot meet the technical problem of long-term antifreeze use requirements.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an antifreeze and energy-saving device for a cooling tower in a thermal power plant, comprising a cooling tower, a condenser is arranged in the cooling tower, a fan is arranged on the top of the cooling tower, a shutter is arranged on the front side of the cooling tower, a water collecting tank is arranged on the inner bottom of the cooling tower, a water pump is arranged on one side of the cooling tower, a water inlet cover is arranged at the water inlet end of the water pump, the water inlet cover is immersed in the water collecting tank, a water outlet pipe is arranged at the water outlet end of the water pump, a spray system is arranged at the water outlet end of the water outlet pipe, the spray system is located above the condenser, a water guide structure is arranged in the cooling tower, the water guide structure corresponds to a side position of the spray system, a stirring assembly is arranged in the water collecting tank, a water pump rotating unit that rotates by means of the water pumping pressure is arranged in the water inlet cover, and a pulley mechanism is arranged on the water pump rotating unit and the stirring assembly.
[0007] In a preferred embodiment, the water guiding structure includes a water receiving box movably arranged on the inner side of the cooling tower and a hydraulic cylinder arranged between the water receiving box and the inner wall of the cooling tower; sliders are fixedly connected to both sides of the water receiving box, and a slide groove for sliding of the slider is arranged on the inner wall of the cooling tower.
[0008] In a preferred embodiment, the water guiding structure includes a water receiving box movably arranged on the inner side of the cooling tower and a hydraulic cylinder arranged between the water receiving box and the inner wall of the cooling tower; sliders are fixedly connected to both sides of the water receiving box, and a slide groove for sliding of the slider is arranged on the inner wall of the cooling tower.
[0009] In a preferred embodiment, the bottom end of the water receiving box corresponds to a position directly above the water collecting pool.
[0010] In a preferred embodiment, the stirring assembly includes a stirring shaft rotatably connected to the inner wall of the water collecting tank and a plurality of stirring rods fixedly connected to the stirring shaft.
[0011] In a preferred embodiment, the water pump rotation unit includes a pair of fixing frames fixedly connected in the water inlet cover, a shaft rotatably connected to the pair of fixing frames, a plurality of fan blades arranged around the shaft, a first bevel gear coaxially fixed to the shaft, and a second bevel gear meshingly connected to the first bevel gear; the second bevel gear is rotatably connected to the water inlet cover via an axis.
[0012] In a preferred embodiment, the pulley mechanism is arranged on the shaft end of the second bevel gear and the stirring shaft.
[0013] Technical effects and advantages of the utility model:
[0014] The utility model provides a water guiding structure, so that in extremely cold weather, the water pump and the spray system can promote the circulation of water in the pipe in a non-stop operation mode to realize the flow of water in the pipe, thereby achieving the anti-freezing effect. Compared with the traditional anti-freezing structure using an electric heating structure, the electricity cost is relatively reduced; at the same time, by moving the water receiving box to a position below the spray system, the liquid sprayed by the spray system performing the anti-freezing operation can be sent to the water collection pool, so as to avoid the problem of water being sprayed onto the condenser and causing freezing.
[0015] The utility model provides a water pump rotating unit and a stirring component, and utilizes the negative suction provided by the working water pump to extract the water in the water collection tank. In this way, the fan blades in the water inlet cover can rotate, and the rotational power can be transmitted to the stirring component through the gear pair and the pulley mechanism in turn. In this way, the stirring component can perform a stirring action in the water collection tank, and the stirring action can have an antifreeze effect on the water body. Moreover, since the power of the stirring component is provided by the negative suction of the water pump, the antifreeze treatment of the water body can achieve a relatively energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0017] Figure 2 For this utility model Figure 1 sectional view of .
[0018] Figure 3 For the utility model Figure 1 Schematic diagram of the structure without cooling tower.
[0019] Figure 4 For this utility model Figure 3 A partial schematic diagram of .
[0020] The accompanying drawings are marked as follows: 1. cooling tower; 2. condenser; 3. fan; 4. shutter; 5. water collection tank; 6. water pump; 61. water inlet cover; 62. water outlet pipe; 7. spray pipe; 71. nozzle; 8. water guide structure; 81. water receiving box; 82. hydraulic cylinder; 9. stirring assembly; 91. stirring shaft; 92. stirring rod; 10. water pump rotating unit; 101. fixing frame; 102. shaft rod; 103. fan blade; 104. first bevel gear; 105. second bevel gear; 11. pulley mechanism; 12. slider. DETAILED DESCRIPTION
[0021] Combined with reference Figure 1-Figure 4The utility model provides an antifreeze and energy-saving device for a cooling tower in a thermal power plant, comprising a cooling tower 1, wherein a condenser 2 is arranged in the cooling tower 1; the two ends of the condenser 2 are respectively a cooling water inlet and a cooling water outlet, and are located on the outside of the cooling tower 1; a fan 3 is arranged on the top of the cooling tower 1, and a shutter 4 is arranged on the front side of the cooling tower 1; the shutter 4 can be an air inlet, and when the cooling tower dissipates heat from an external heat source, the exhaust work of the fan 3 can achieve a ventilation effect in the cooling tower 1 through the air inlet and the fan 3; a water collecting tank 5 is arranged at the inner bottom of the cooling tower 1; the water collecting tank 5 can provide a water source for cooling the condenser 2; a water pump 6 is arranged on one side of the cooling tower 1, and the water inlet of the water pump 6 A water inlet cover 61 is provided at the end, and the water inlet cover 61 is immersed in the water collecting tank 5. A water outlet pipe 62 is provided at the water outlet end of the water pump 6, and a spray system is provided at the water outlet end of the water outlet pipe 62, and the spray system is located above the condenser 2; the spray system draws water from the water collecting tank 5 through the water pump 6, and the spray system can spray the water onto the condenser 2 that performs heat dissipation; a water guide structure 8 is provided in the cooling tower 1, and the water guide structure 8 corresponds to a side position of the spray system, a stirring assembly 9 is provided in the water collecting tank 5, and a water pump rotating unit 10 that rotates with the help of the water pumping pressure of the water pump 6 is provided in the water inlet cover 61, and a pulley mechanism 11 is provided on the water pump rotating unit 10 and the stirring assembly 9.
[0022] In this embodiment, when the water used in the cooling tower 1 needs to be protected from freezing in extremely cold weather, the water pump 6 and the spray system promote the circulation of water in the pipeline in a non-stop operation mode to achieve the purpose of water flow in the pipeline. In this way, the antifreeze effect can be achieved. Compared with the traditional antifreeze using electric heating structure, the electricity cost can be reduced. At the same time, the water guide structure 8 is used to transfer the liquid for antifreeze treatment, so as to avoid the problem of water spraying onto the condenser 2 and causing freezing.
[0023] Continue reading Figure 3 The spray system includes a spray pipe 7 and a plurality of spray heads 71 fixedly connected to the bottom of the spray pipe 7; the spray pipe 7 is arranged in the cooling tower 1 and is located directly above the condenser 2; when the condenser 2 performs heat dissipation treatment on the heat source in the thermal power plant, the water pump 6 can extract the water source in the water collection tank 5 and send it into the spray pipe 7, and the spray head 71 can spray the spray water onto the condenser 2, and the sprayed water will absorb heat energy, which can accelerate the heat dissipation of the condenser 2.
[0024] The water guide structure 8 includes a water receiving box 81 movably arranged on the inner side of the cooling tower 1 and a hydraulic cylinder 82 arranged between the water receiving box 81 and the inner wall of the cooling tower 1; sliders 12 are fixedly connected to both sides of the water receiving box 81, and a slide groove for the sliding of the slider 12 is arranged on the inner wall of the cooling tower 1; the sliding cooperation between the slider 12 and the slide groove can improve the movement smoothness when the hydraulic cylinder 82 drives the water receiving box 81 to move horizontally.
[0025] The bottom end of the water receiving box 81 corresponds to a position directly above the water collecting pool 5 .
[0026] Specifically, when it is necessary to perform antifreeze treatment on the water in the cooling tower 1, the water pump 6 and the spraying system can be controlled to work, so that the cooperation between the water pump 6 and the spraying system can keep the water in a flowing state at all times, thereby preventing the water from freezing. At the same time, the water receiving box 81 is moved to the bottom of the spraying system by the hydraulic cylinder 82, so that the water receiving box 81 can return the water to the collection pool 5, so that the antifreeze treated water can bypass the condenser 2.
[0027] Continue reading Figure 4 The stirring assembly 9 includes a stirring shaft 91 rotatably connected to the inner wall of the water collecting tank 5 and a plurality of stirring rods 92 fixedly connected to the stirring shaft 91; the stirring shaft 91 drives the stirring rods 92 to rotate, which can stir the water in the water collecting tank 5 to promote the surging of the water in the water collecting tank 5, thereby achieving an antifreeze effect.
[0028] The water pump rotating unit 10 includes a pair of fixing frames 101 fixedly connected in the water inlet cover 61, a shaft 102 rotatably connected to the pair of fixing frames 101, a plurality of fan blades 103 arranged around the shaft 102, a first bevel gear 104 coaxially fixed to the shaft 102 and a second bevel gear 105 meshingly connected to the first bevel gear 104; the second bevel gear 105 is rotatably connected to the water inlet cover 61 through an axis; when the water pump 6 is in negative pressure pumping action, the water in the water inlet cover 61 can be transported upward and pass through the position of the fan blades 103, so that the fan blades 103 can promote the rotation of the shaft 102, which can change the power of the shaft 102 and transmit it to the stirring assembly 9 outward.
[0029] The pulley mechanism 11 is arranged on the shaft end of the second bevel gear 105 and the stirring shaft 91; in the present application, the pulley mechanism 11 includes a pair of pulleys and belts, one pulley is fixedly connected to the shaft end of the second bevel gear 105, and the other pulley is fixedly connected to the stirring shaft 91.
[0030] Specifically, when the water pump 6 cooperates with the spray system to perform negative pressure pumping, the water in the water inlet hood 61 can be transported upward and pass through the position of the fan blades 103, so that the flowing water can push the fan blades 103 to rotate, and the shaft 102 can also rotate, through the meshing transmission of the first bevel gear 104 and the second bevel gear 105, and the second bevel gear 105 through the pulley mechanism 11 and the stirring shaft 91 The cooperation of the transmission, the stirring shaft 91 can drive the stirring rod 92 to stir the water in the collection tank 5 to promote the active state of the water, thereby achieving an anti-freeze effect, and because the stirring component 9 is indirectly provided with action by the water pump 6, this can reduce the cost of the driving equipment and is more energy-saving.
Claims
1. A cooling tower antifreeze energy-saving device for a thermal power plant, comprising a cooling tower (1), characterized in that: A condenser (2) is provided in the cooling tower (1), a fan (3) is provided at the top of the cooling tower (1), a shutter (4) is provided at the front side of the cooling tower (1), a water collecting tank (5) is provided at the inner bottom of the cooling tower (1), a water pump (6) is provided on one side of the cooling tower (1), a water inlet cover (61) is provided at the water inlet end of the water pump (6), the water inlet cover (61) is immersed in the water collecting tank (5), and a water outlet pipe (62) is provided at the water outlet end of the water pump (6), the water outlet pipe (62) ) is provided with a spray system at the water outlet end, the spray system is located above the condenser (2), a water guide structure (8) is provided in the cooling tower (1), the water guide structure (8) corresponds to a side position of the spray system, a stirring assembly (9) is provided in the water collecting tank (5), a water pump rotating unit (10) that rotates by means of the water pumping pressure of the water pump (6) is provided in the water inlet cover (61), and a pulley mechanism (11) is provided on the water pump rotating unit (10) and the stirring assembly (9).
2. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 1, characterized in that: The spray system comprises a spray pipe (7) and a plurality of spray heads (71) fixedly connected to the bottom of the spray pipe (7); the spray pipe (7) is arranged in the cooling tower (1) and is located directly above the condenser (2).
3. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 2, characterized in that: The water guide structure (8) comprises a water receiving box (81) movably arranged inside the cooling tower (1) and a hydraulic cylinder (82) arranged between the water receiving box (81) and the inner wall of the cooling tower (1); sliders (12) are fixedly connected to both sides of the water receiving box (81), and a slide groove for the slider (12) to slide is arranged on the inner wall of the cooling tower (1).
4. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 3, characterized in that: The bottom end of the water receiving box (81) corresponds to a position directly above the water collecting pool (5).
5. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 1, characterized in that: The stirring assembly (9) comprises a stirring shaft (91) rotatably connected to the inner wall of the water collecting tank (5) and a plurality of stirring rods (92) fixedly connected to the stirring shaft (91).
6. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 5, characterized in that: The water pump rotating unit (10) comprises a pair of fixing frames (101) fixedly connected to the water inlet cover (61), a shaft (102) rotatably connected to the pair of fixing frames (101), a plurality of fan blades (103) arranged around the shaft (102), a first bevel gear (104) coaxially fixed to the shaft (102), and a second bevel gear (105) meshingly connected to the first bevel gear (104); the second bevel gear (105) is rotatably connected to the water inlet cover (61) via a shaft.
7. The antifreeze and energy-saving device for cooling tower of thermal power plant according to claim 6, characterized in that: The pulley mechanism (11) is arranged on the shaft end of the second bevel gear (105) and the stirring shaft (91).