A cooling tower movable wind screen device

Abstract

A cooling tower movable wind screen device, winter northern cooling tower exists circulating water temperature low and easy to freeze problem, power plant traditionally adopts to hang wind screen to reduce freezing, but due to the geographical position of my factory, manual operation and the operation environment of hanging wind screen is bad, the utility model discloses a wind -shield device, A slide rail and B slide rail, the wind -shield device can shield more than one third area of the outer circle of cooling tower, one end is slidably connected with the A slide rail fixed on the ground outside the cooling tower, the other end is slidably connected with the B slide rail fixed on the outer wall of the cooling tower, the wind -shield device contains wind -screen device, rack and two asynchronous motors again, the rack is fixed on the inside upper portion of wind -screen device, both ends of the rack are engaged with gear, two gears are connected with asynchronous motor respectively, and the two asynchronous motors are fixed on the upper end of fixed support through motor support.The utility model is used for movable cooling tower wind screen research and application.

Description

Technical Field

[0001] This utility model relates to a movable windbreak curtain device for cooling towers. Background Technology

[0002] In winter, the circulating cooling towers of heating units in northern regions suffer from low circulating water temperatures and are prone to freezing. Traditionally, power plants use hanging windbreak curtains to reduce icing. However, due to the geographical location of our plant, especially in early winter and early spring when there are large temperature differences between day and night, the hanging windbreak curtains are manually operated in harsh working environments. It is impossible to adjust them in a timely manner according to changes in temperature and unit load. When the temperature rises, excess windbreak curtains cannot be removed in time, which seriously affects the unit's vacuum level and reduces the unit's economic efficiency. Furthermore, since the windbreak curtains are removed manually, there is a certain degree of danger in working at heights during winter. With the continuous development of renewable energy power generation, the power grid's task of flexibly shaving peak loads for thermal power units is gradually increasing. Our plant has carried out a zero-output peak load shaving retrofit for the low-pressure cylinder of the unit. After the low-pressure cylinder of the heating unit is shaving at zero output, the amount of heat that can be carried away by the circulating water will be further reduced. Due to the low temperature of the circulating water, the circulating cooling tower is severely iced, causing the load on the water tower packing layer and structural beams to exceed the limit. A large number of packing materials damaged by freezing need to be replaced every year. The repeated freeze-thaw cycles of the water tower column concrete will reduce its service life, especially in areas with cracks, which are more likely to cause concrete damage and seriously endanger the safety of the unit. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a movable windbreak curtain device for cooling towers.

[0004] The above objectives are achieved through the following scheme: A movable windbreak curtain device for a cooling tower comprises: a windbreak device, an A slide rail, and a B slide rail. The windbreak device covers more than one-third of the outer ring area of ​​the cooling tower, and one end of the windbreak device is slidably connected to the A slide rail and the other end is slidably connected to the B slide rail. The A slide rail is fixed to the ground outside the cooling tower, and the B slide rail is fixed to the outer wall of the cooling tower. The windbreak device includes a windbreak curtain device, a rack, and two asynchronous motors. A rack is fixed on the upper inner side of the windbreak curtain device. Both ends of the rack are meshed with gears. Both gears are connected to the asynchronous motors. The two asynchronous motors are respectively fixed to the upper end of the fixed bracket via motor supports.

[0005] The windbreak curtain device includes multiple folding curtains and multiple support brackets, with a folding curtain fixed to the inner circumference of each support bracket.

[0006] Each of the aforementioned support brackets is a frame consisting of two vertical pillars, a horizontal plate, and a horizontal column. Each pillar is made of channel steel and has symmetrical sliding grooves on its left and right sides. The upper end of each of the two pillars is fixed with a horizontal plate, and the lower end is fixed with a horizontal column. The horizontal column is slidably connected to the A-slide rail.

[0007] One end of the horizontal plate is slidably connected to the B slide rail, and the other end is fixed to the upper end of the vertical plate.

[0008] Each of the folding curtains includes a curtain body, multiple A-shaped rods, and multiple B-shaped rods. The upper end of the curtain body is fixed to a horizontal plate. The multiple A-shaped rods and multiple B-shaped rods are inserted into the curtain body in an alternating manner, with one A-shaped rod and one B-shaped rod inserted at a time. The first and last inserted rods are both A-shaped rods.

[0009] Multiple sliding buckles are evenly arranged on the outer side of each of the aforementioned A-shaped rods. Each row of sliding buckles is connected to a pull rope. The upper end of each pull rope is fixed to a drum, and the lower end is fixed to the bottom A-shaped rod. The drum is connected to a corner motor fixed on a vertical plate.

[0010] A limit switch is installed on the opposite side of the slide rail A where the windbreak device is located.

[0011] Each of the A-shaped rods is inserted into the grooves of the support column at both ends, and each of the B-shaped rods is attached to the inner side of the support column. Beneficial effects

[0012] 1. Traditional techniques rely on manual hanging and dismantling of windbreaks at heights. The harsh working environment in winter poses safety hazards such as falls and frostbite. This utility model achieves fully automatic operation by controlling the movement with a common motor and the raising and lowering of the windbreaks with a corner motor. No on-site personnel are required, thus solving the problem of dangerous work at heights in winter.

[0013] 2. Traditional cooling towers suffer from severe icing, causing the load on the water tower filler layer and structural beams to exceed limits. A large number of fillers damaged by icing need to be replaced every year, and repeated freeze-thaw cycles of the water tower column concrete reduce its service life. This utility model adjusts the air inlet position and air inlet area to maintain the circulating water temperature within a reasonable range, significantly reducing the amount of icing, avoiding frequent filler replacement, reducing the risk of concrete freeze-thaw cycles, extending the service life of the cooling tower, and ensuring the safe operation of the unit.

[0014] 3. This utility model is arranged around the outer ring of the cooling tower and blocks more than one-third of the area. The movable windbreak curtain device of the cooling tower can move in a ring through the A slide rail and the B slide rail. The position of the windbreak curtain can be adjusted according to the air intake needs of different areas of the cooling tower, making it more versatile than traditional windbreak curtains. Attached Figure Description

[0015] Figure 1 This is a side view of the present invention; Figure 2 This utility model Figure 1 Enlarged view of point A; Figure 3 This utility model Figure 1 Enlarged view of point B; Figure 4 This utility model Figure 1 Enlarged view of point C; Figure 5 This utility model Figure 1 Enlarged view of point D; Figure 6 This utility model Figure 1 AA section diagram; Figure 7 This utility model Figure 6 Enlarged view of point E; Figure 8 This utility model Figure 6 Enlarged view at point F; Figure 9 This utility model Figure 6 Enlarged view of point G; Figure 10 This is a front view of a single windbreak curtain of this utility model; Figure 11 This utility model Figure 10 Enlarged view of point H; Figure 12 This utility model Figure 10 Enlarged view of point I; Figure 13 This is a schematic diagram of the distribution of this utility model; In the diagram: 1. Cooling tower; 2. Air inlet; 3. A slide rail; 4. B slide rail; 5. Wind deflector; 6. Wind deflector curtain device; 7. Folding curtain; 8. Second slider; 9. Horizontal plate; 10. Fixed bracket; 11. Pulley; 12. Vertical plate; 13. Corner motor; 14. Curtain body; 15. Roller drum; 16. Asynchronous motor; 17. Motor support; 18. Gear; 19. Rack; 20. Slide groove; 21. A round rod; 22. B round rod; 23. Support column; 24. Pull rope; 25. Sliding buckle; 26. First slider; 27. Limiter; 28. Horizontal column; 29. ​​Support bracket. Detailed Implementation

[0016] A movable windbreak curtain device for a cooling tower comprises: a windbreak device 5, an A slide rail 3, and a B slide rail 4. The windbreak device covers more than one-third of the outer ring area of ​​the cooling tower 1, and one end of the windbreak device is slidably connected to the A slide rail and the other end is slidably connected to the B slide rail. The A slide rail is fixed to the ground outside the cooling tower, and the B slide rail is fixed to the outer wall of the cooling tower. A row of pulleys 11 is provided on both sides of the A slide rail and the B slide rail. The windbreak device includes a windbreak curtain device 6, a rack 19, and two asynchronous motors 16. A rack is fixed on the upper inner side of the windbreak curtain device. The length of the rack is the same as the inner arc length of the windbreak curtain device. Both ends of the rack mesh with gears 18. Both gears are connected to the output shafts of the asynchronous motors. The two asynchronous motors are respectively fixed on the upper end of the fixed bracket 10 through motor supports 17. The output shaft of each asynchronous motor is vertically upward.

[0017] The fixed bracket is L-shaped, with one end fixed to the outer wall above the air inlet 2 of the cooling tower and the other end vertically fixed to the ground.

[0018] The windbreak curtain device includes multiple folding curtains 7 and multiple support brackets 29, with a folding curtain fixed to the inner circumference of each support bracket.

[0019] Each of the aforementioned support brackets is a frame formed by two vertical pillars 23, a horizontal plate 9, and a horizontal column 28. Each of the aforementioned pillars is a channel steel, and sliding grooves 20 are symmetrically arranged on its left and right sides. A horizontal plate is fixed to the upper end of the two pillars, and a horizontal column is fixed to the lower end. A first slider 26 is fixed to both ends of the lower side of the horizontal column, and the first slider is slidably connected to the A slide rail.

[0020] One end of the horizontal plate is fixed with a second slider 8, and the other end is fixed to the upper end of the vertical plate 12. The second slider is slidably connected to the B slide rail, and the vertical plate is located on the outermost side of the windbreak device.

[0021] Each of the folding curtains includes a curtain body 14, a plurality of A-shaped rods 21 and a plurality of B-shaped rods 22. The upper end of the curtain body is fixed to a horizontal plate. The plurality of A-shaped rods and the plurality of B-shaped rods are inserted into the curtain body in an alternating manner, with one A-shaped rod and one B-shaped rod inserted at a time, and the first and last inserted rods are both A-shaped rods.

[0022] Multiple sliding buckles 25 are evenly arranged on the outer side of each of the aforementioned A-shaped rods. Each row of sliding buckles is connected to a pull rope 24. The upper end of each pull rope is fixed to the drum 15, and the lower end is fixed to the bottom A-shaped rod. The drum is connected to the corner motor 13 fixed on the vertical plate.

[0023] A limit switch 27 is installed on the opposite side of the slide rail A where the windbreak device is located.

[0024] The multiple A-shaped rods are evenly distributed longitudinally along the vertical direction, and the two ends of each A-shaped rod are inserted into the groove of the support column. The multiple B-shaped rods are evenly distributed longitudinally along the vertical direction against the inner side of the support column.

[0025] The wind volume monitoring of the windbreak device is guided by local wind direction signs.

[0026] Working principle: This utility model is guided by the observation of local wind direction indicators, and controls the air intake of the cooling tower by moving the movable windbreak device of the cooling tower in a circular motion and moving the windbreak up and down.

[0027] First, observe the local wind direction sign. When the position of the device needs to be adjusted, start the asynchronous motor fixed at the corner of the L-shaped fixed bracket. Its output shaft drives the gear to rotate. The gear meshes with the rack on the upper inner side of the support column, driving the support column and the cross plate to slide synchronously in a ring along the A slide rail and the B slide rail respectively, moving the device to the target area. The rack is prevented from dislodging by the limiter on the opposite side of the device on the A slide rail.

[0028] When the wind-blocking area of ​​the device needs to be adjusted, the corner motor fixed on the vertical plate is started. Its output shaft drives the drum to rotate. The drum controls the bottom A round rod to rise and fall along the support slide groove through the pull rope passing through the A round rod sliding buckle. When the pull rope is rolled up, the bottom A round rod moves up, causing the curtain body with the A round rod and B round rod inserted alternately to fold. When the pull rope is lowered, the bottom A round rod moves down, causing the curtain body to unfold. In this way, the wind-blocking area is changed. Finally, through the dual adjustment of position and area, the circulating water temperature is maintained within a reasonable range, reducing the risk of freezing.

Claims

1. A movable windbreak curtain device for a cooling tower, comprising: The wind deflector, slide rail A, and slide rail B are characterized in that: the wind deflector covers more than one-third of the outer ring area of ​​the cooling tower, and one end of the wind deflector is slidably connected to slide rail A, and the other end is slidably connected to slide rail B; slide rail A is fixed to the ground outside the cooling tower, and slide rail B is fixed to the outer wall of the cooling tower. The windbreak device includes a windbreak curtain device, a rack, and two asynchronous motors. A rack is fixed on the upper inner side of the windbreak curtain device. Both ends of the rack are meshed with gears. Both gears are connected to the asynchronous motors. The two asynchronous motors are respectively fixed to the upper end of the fixed bracket via motor supports.

2. The movable windbreak curtain device for a cooling tower according to claim 1, characterized in that: The windbreak curtain device includes multiple folding curtains and multiple support brackets, with a folding curtain connected to the inner periphery of each support bracket.

3. A movable windbreak curtain device for a cooling tower according to claim 2, characterized in that: Each of the aforementioned support brackets is a frame consisting of two vertical pillars, a horizontal plate, and a horizontal column. Each pillar is made of channel steel and has symmetrical sliding grooves on its left and right sides. The upper end of each of the two pillars is fixed with a horizontal plate, and the lower end is fixed with a horizontal column. The horizontal column is slidably connected to the A-slide rail.

4. A movable windbreak curtain device for a cooling tower according to claim 3, characterized in that: One end of the horizontal plate is slidably connected to the B slide rail, and the other end is fixed to the upper end of the vertical plate.

5. A movable windbreak curtain device for a cooling tower according to claim 4, characterized in that: Each of the folding curtains includes a curtain body, multiple A-shaped rods and multiple B-shaped rods. The upper end of the curtain body is fixed to a horizontal plate. The curtain body is interspersed with A-shaped rods and B-shaped rods, and the first and last inserted rods are both A-shaped rods.

6. A movable windbreak curtain device for a cooling tower according to claim 5, characterized in that: Multiple sliding buckles are evenly arranged on the outer side of each of the aforementioned A-shaped rods. Each row of sliding buckles is connected to a pull rope. The upper end of each pull rope is fixed to a drum, and the lower end is fixed to the bottom A-shaped rod. The drum is connected to a corner motor fixed on a vertical plate.

7. A movable windbreak curtain device for a cooling tower according to claim 6, characterized in that: A limit switch is installed on the opposite side of the slide rail A where the windbreak device is located.

8. A movable windbreak curtain device for a cooling tower according to claim 7, characterized in that: Each of the A-shaped rods is inserted into the grooves of the support column at both ends, and each of the B-shaped rods is attached to the inner side of the support column.

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