Anti-freezing device of air cooling tower

Abstract

The utility model discloses an air cooling tower anti-freezing device, and relates to the technical field of thermal power generation. The cooling device is technically characterized by comprising a cooling triangle, two fixed guide rails are oppositely arranged at an air inlet of the cooling triangle, guide grooves are formed in the two fixed guide rails, and a plurality of fixed baffle plates and a plurality of movable baffle plates are sequentially arranged between the two guide grooves in a staggered mode in the vertical direction; the two ends of the fixed shielding plate are fixedly connected with the two guide grooves correspondingly, and the two ends of the movable shielding plate are slidably connected with the two guide grooves correspondingly. The multiple movable shielding plates are connected with the same driving device, and the driving device can drive the multiple movable shielding plates to move synchronously. The ventilation quantity is controlled by moving the movable baffle plate up and down, and the end part of the movable baffle plate does not need to be rotationally adjusted like blades of a shutter, so that the risk that cold air leaks into the cooling triangle from the side edge of the movable baffle plate can be effectively reduced; therefore, the anti-freezing effect of the cooling triangular radiator of the air cooling tower in winter is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of thermal power generation technology, and in particular to an air-cooling tower antifreeze device. Background Art

[0002] A natural draft direct cooling system (NDC) involves sending steam from the turbine through exhaust piping to an air-cooled radiator housed within a natural draft cooling tower. The tower's draft forces cool air across the radiator, condensing the steam within. Winters in northern China are often cold, and failure to control the air flow to the radiator can easily lead to freezing and cracking. To improve the tower's resistance to freezing, automatically adjustable shutters are typically installed at the tower's air inlet, adjusting the amount of air entering the tower according to weather conditions.

[0003] However, when the louvers of the air-cooled tower radiator are in operation, since the blades adjust the air intake volume by rotating, in order to ensure their smooth rotation, a certain space must inevitably be left between the ends of the louver blades and the mounting bracket at the radiator air inlet, which will cause air leakage on the sides of the louver. Especially in winter when the ambient temperature is low and the natural wind speed is high, the lateral air leakage of the louver may still cause the tube bundle to freeze, affecting the safe operation of the unit. Utility Model Content

[0004] The present application provides an air cooling tower antifreeze device, which can improve the antifreeze effect of the air cooling tower radiator.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0006] An air cooling tower antifreeze device comprises a cooling triangle, wherein two vertical fixed guide rails are symmetrically provided at the air inlet of the cooling triangle, and the two fixed guide rails are respectively mounted on the ends of two radiators at the air inlet of the cooling triangle;

[0007] The two fixed guide rails are provided with guide grooves on their mutually adjacent sides, and a plurality of fixed shielding plates and a plurality of movable shielding plates are alternately arranged in the vertical direction between the two guide grooves;

[0008] The two ends of the fixed shielding plate are respectively fixedly connected to the two guide grooves, and the two ends of the movable shielding plate are respectively slidably connected to the two guide grooves; and the fixed shielding plate is located in the guide groove on the side close to the cooling triangle, and the movable shielding plate is located in the guide groove on the side away from the cooling triangle;

[0009] The plurality of movable shielding panels are connected to a same driving device, and the driving device can drive the plurality of movable shielding panels to move synchronously.

[0010] Furthermore, the guide groove is provided with a mounting groove and a guide groove side by side along the width direction thereof, a plurality of the fixed shielding plates are fixedly mounted in the mounting groove, and a plurality of the movable shielding plates are movably mounted in the guide groove.

[0011] Furthermore, two sealing rubber strips are fixedly mounted on the upper and lower sides of the movable shielding plate, and one end of the sealing rubber strip facing the cooling triangle contacts the adjacent fixed shielding plate.

[0012] Furthermore, the driving device includes a main mounting column, the lower end of the main mounting column is fixedly mounted on the ground outside the cooling triangle air inlet, and one side of the main mounting column is evenly installed with multiple driving levers in the vertical direction, the number of the driving levers is the same as the number of the movable shielding plates, and the positions of the driving levers correspond one-to-one to the multiple movable shielding plates, one end of the driving lever is hinged to the movable shielding plates at the corresponding positions, the middle position of the driving lever is movably mounted on the main mounting column, and the multiple driving rods are movably mounted on the same force transmission rod away from one end of the cooling triangle, one side of the lower end of the force transmission rod is fixedly connected to the output end of the hydraulic cylinder through an angle iron, and the bottom of the cylinder body of the hydraulic cylinder is fixedly mounted on the ground.

[0013] Furthermore, a plurality of fixing brackets are provided on the main mounting column in the vertical direction, and the fixing brackets include two side brackets, and the ends of the two side brackets close to each other are respectively fixedly mounted on opposite side walls of the main mounting column along the width direction of the cooling triangle air inlet, and the ends of the two side brackets far away from each other are respectively fixedly mounted on the two fixed guide rails.

[0014] Furthermore, a first through hole is provided in the middle position of the driving lever along its length direction, a first connecting column is movably inserted into the first through hole, and one end of the first connecting column is fixedly connected to the main mounting column.

[0015] Furthermore, the driving lever is provided with a second through hole along its length direction at one end away from the movable shielding plate, a second connecting column is movably inserted into the second through hole, and one end of the second connecting column is fixedly connected to the force transmission rod.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] The fixed and movable shielding panels of the present invention are staggered vertically at the air inlet of the cooling triangle. When the cooling triangle radiator requires normal air intake, the movable shielding panels can be synchronously moved to the fixed shielding panels above them by a driving device. In this way, the ambient air can flow to the cooling triangle radiator through the opening revealed by the movable shielding panels. In cold winter weather, when it is necessary to stop the cold air from contacting the cooling triangle radiator to prevent it from freezing and cracking, the driving device can drive the multiple movable shielding panels to move downward synchronously, cooperating with the fixed shielding panels to fully seal the cooling triangle's air inlet. Compared with the shutter design in the prior art, the movable shielding plate of the present application controls the ventilation volume by moving up and down, and its end does not need to be rotated and adjusted like the blades of the shutter. Therefore, the movable shielding plate of the present application can be inserted into the guide groove at all times during use and maintain a close relationship with the guide groove. This can effectively reduce the risk of cold air in the air leaking into the cooling triangle from the side of the movable shielding plate, thereby effectively improving the anti-freeze effect of the cooling triangle radiator of the air-cooled tower in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the movable shielding panel of the present application when it is in a closed state;

[0020] Figure 2 This is a schematic diagram of the overall structure of the movable shielding panel of the present application when it is in the open state;

[0021] Figure 3 yes Figure 2 A top view of the overall structure;

[0022] Figure 4 This is a schematic diagram of the connection status of one of the movable shielding panels in this application through the driving lever, the main mounting column and the force transmission rod.

[0023] Figure numerals: 1. Cooling triangle; 2. Fixed guide rail; 3. Guide groove; 31. Mounting groove; 32. Guide groove; 4. Fixed shielding plate; 5. Movable shielding plate; 6. Driving device; 61. Main mounting column; 62. Driving lever; 63. Force transmission rod; 64. Angle iron; 65. Hydraulic cylinder; 7. Sealing rubber strip; 8. Fixed bracket; 81. Side bracket; 9. First through hole; 10. First connecting column; 11. Second through hole; 12. Second connecting column. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0025] like Figure 1-Figure 3 As shown, an air cooling tower antifreeze device disclosed in the present application includes a cooling triangle 1, two vertical fixed guide rails 2 are symmetrically provided at the air inlet of the cooling triangle 1, and the two fixed guide rails 2 are respectively installed at the ends of the two radiators at the air inlet of the cooling triangle 1;

[0026] The two fixed guide rails 2 are provided with guide grooves 3 on their adjacent sides, and a plurality of fixed shielding plates 4 and a plurality of movable shielding plates 5 are alternately arranged in the vertical direction between the two guide grooves 3;

[0027] The two ends of the fixed shielding plate 4 are fixedly connected to the two guide grooves 3, and the two ends of the movable shielding plate 5 are slidably connected to the two guide grooves 3; and the fixed shielding plate 4 is located in the guide groove 3 on the side close to the cooling triangle 1, and the movable shielding plate 5 is located in the guide groove 3 on the side away from the cooling triangle 1;

[0028] The multiple movable shielding panels 5 are connected to the same driving device 6, and the driving device 6 can drive the multiple movable shielding panels 5 to move synchronously.

[0029] In the above embodiments, the fixed guide rails 2 provided at the air inlet of the cooling triangle 1 of the present application can provide a basis for the installation of the fixed shielding plate 4 and the movable shielding plate 5, and the guide grooves 3 on the fixed guide rails 2 can also provide a guiding function during the movement of the movable shielding plate 5. The fixed shielding plate 4 and the movable shielding plate 5 of the present application are staggered in the vertical direction at the air inlet of the cooling triangle 1, and both ends of the fixed shielding plate 4 and the movable shielding plate 5 are located in the guide grooves 3 of the two fixed guide rails 2. When the radiator of the cooling triangle 1 needs normal air intake, the movable shielding plate 5 that is not coplanar with the fixed shielding plate 4 can be synchronously moved to the adjacent fixed shielding plate 4 above each other by the driving device 6, so that the wind in the environment can flow to the radiator of the cooling triangle 1 from the opening revealed after the movable shielding plate 5 is removed.

[0030] When it is cold in winter and it is necessary to prevent the cold air in the environment from coming into contact with the radiator of the cooling triangle 1 to prevent the radiator of the cooling triangle 1 from freezing and cracking, the driving device 6 can be used to drive multiple movable shielding plates 5 to move downward synchronously, and cooperate with the fixed shielding plate 4 to completely close the air inlet of the cooling triangle 1. Compared with the shutter design in the prior art, the movable shielding plate 5 of the present application controls the ventilation volume by moving up and down, and its end does not need to be rotated and adjusted like the blades of the shutter. Therefore, the movable shielding plate 5 of the present application can be inserted into the guide groove 3 during use and maintain a close relationship with the guide groove 3. This can effectively reduce the risk of cold air in the air leaking into the interior of the cooling triangle 1 from the side of the movable shielding plate 5, thereby effectively improving the antifreeze effect of the radiator of the cooling triangle 1 of the air-cooled tower in winter.

[0031] Furthermore, if Figure 2 and Figure 3 As shown, a mounting groove 31 and a guide groove 32 are arranged side by side in the guide groove 3 along its width direction. The multiple fixed shielding plates 4 are fixedly installed in the mounting groove 31, and the multiple movable shielding plates 5 are movably installed in the guide groove 32.

[0032] In the above embodiments, the fixed shielding plate 4 and the movable shielding plate 5 of the present application are respectively installed in the installation groove 31 and the guide groove 32. Compared with setting the fixed shielding plate 4 and the movable shielding plate 5 in a common groove, the movable shielding plate 5 can avoid friction with the fixed shielding plate 4 during the up and down movement.

[0033] Furthermore, if Figures 1-4 As shown, two sealing rubber strips 7 are fixedly installed on the upper and lower sides of the movable shielding plate 5, and one end of the sealing rubber strip 7 facing the cooling triangle 1 is in contact with the fixed shielding plate 4 on the adjacent side.

[0034] In the above embodiment, since the movable shielding plate 5 and the fixed shielding plate 4 of the present application are respectively arranged in the guide groove 32 and the installation groove 31, there will be a certain gap between the two. This gap may also cause air leakage during use. Therefore, the present application installs sealing rubber strips 7 on the upper and lower sides of the movable shielding plate 5 in accordance with the above method. When the movable shielding plate 5 and the fixed shielding plate 4 close the air inlet of the cooling triangle 1, the sealing rubber strips 7 can just block the gap between the two, thereby further improving the antifreeze effect of the cooling triangle 1 in winter. In actual production, if the lower side of the movable shielding plate 5 at the bottom is in direct contact with the ground or the lower end of the frame structure when it is closed, the sealing rubber strip 7 can be omitted on the lower side of the lowest movable shielding plate 5.

[0035] Furthermore, if Figure 3 and Figure 4As shown, the driving device 6 includes a main mounting column 61, the lower end of the main mounting column 61 is fixedly mounted on the ground outside the air inlet of the cooling triangle 1, and one side of the main mounting column 61 is evenly installed with multiple driving levers 62 in the vertical direction. The number of driving levers 62 is the same as the number of movable shielding plates 5, and the positions of the driving levers 62 correspond one-to-one to the multiple movable shielding plates 5. One end of the driving lever 62 is hinged to the movable shielding plate 5 at the corresponding position, and the middle position of the driving lever 62 is movably mounted on the main mounting column 61. Multiple driving levers 62 are movably mounted on the same force transmission rod 63 away from one end of the cooling triangle 1. One side of the lower end of the force transmission rod 63 is fixedly connected to the output end of the hydraulic cylinder 65 through an angle iron 64, and the bottom of the cylinder body of the hydraulic cylinder 65 is fixedly mounted on the ground.

[0036] In the above embodiment, the present application is installed on the main mounting column 61 outside the cooling triangle 1, and multiple driving levers 62 are movably installed. One end of the multiple driving levers 62 is respectively connected to the multiple movable shielding plates 5, and the other end of the multiple driving levers 62 is commonly connected to a force transmission rod 63, and the force transmission rod 63 is connected to the hydraulic cylinder 65 installed on the ground. In this way, the force transmission rod 63 can be driven up and down by the lifting and lowering of the output end of the hydraulic cylinder 65. When the force transmission rod 63 moves up and down, it can carry the multiple driving levers 62 to rotate around their respective connection points with the main mounting column 61, thereby facilitating their connection points with the multiple movable shielding plates 5, and carrying the movable shielding plates 5 up and down along the guide groove 32 to achieve the effect of regulating the air intake volume of the cooling triangle 1. The present application can drive the multiple movable shielding plates 5 to move synchronously through the hydraulic cylinder 65, effectively improving the control efficiency when adjusting the ventilation volume of the air inlet of the cooling triangle 1. In actual use, the length from the connection between the driving lever 62 and the main mounting column 61 to the connection between the driving lever 62 and the force transmission rod 63 can be greater than the length of the other part, so that the hydraulic cylinder 65 can save more effort when driving the movable shielding plate 5 up and down through the driving lever 62.

[0037] Furthermore, if Figure 2 and Figure 3 As shown, a plurality of fixing frames 8 are provided on the main mounting column 61 in the vertical direction, and the fixing frames 8 include two side brackets 81. The ends close to each other of the two side brackets 81 are respectively fixedly mounted on opposite side walls of the main mounting column 61 along the width direction of the air inlet of the cooling triangle 1, and the ends far away from each other of the two side brackets 81 are respectively fixedly mounted on two fixed guide rails 2.

[0038] In the above embodiment, the main mounting column 61 is connected to the fixed guide rail 2 through multiple fixing frames 8, which can improve the stability of the main mounting column 61 during use. In addition, the ends of the two side brackets 81 in the fixing frames 8 that are away from each other are installed on the fixed guide rail 2. Compared with installing them on the fixed shielding plate 4, it can prevent the movable shielding plate 5 from being obstructed in the vertical movement range.

[0039] Furthermore, if Figure 4 As shown, a first through hole 9 is provided in the middle of the driving lever 62 along its length direction, and a first connecting column 10 is movably inserted into the first through hole 9 , and one end of the first connecting column 10 is fixedly connected to the main mounting column 61 .

[0040] In the above embodiment, when the movable shielding plate 5 moves up and down along the fixed guide rail 2, the horizontal position of the movable shielding plate 5 remains unchanged, and the position of the main mounting post 61 is also fixed. Therefore, the driving lever 62, which serves as a connection between the movable shielding plate 5 and the main mounting post 61, needs to adjust its position in real time to adapt to the change in the distance between the connection point between the movable shielding plate 5 and the driving lever 62 and the connection point between the driving lever 62 and the main mounting post 61. In the present application, a first through hole 9 is provided at the middle position of the driving lever 62 along its length, and is movably mounted on the first connecting post 10. When the movable shielding plate 5 moves up and down with the driving lever 62, the first through hole 9 on the driving lever 62 can slide along the first connecting post 10, thereby adapting to the change in the distance between the connection point between the movable shielding plate 5 and the driving lever 62 and the connection point between the driving lever 62 and the main mounting post 61 when the movable shielding plate 5 moves.

[0041] Furthermore, if Figure 4 As shown, the driving lever 62 is provided with a second through hole 11 along its length direction at one end away from the movable shielding plate 5 , and a second connecting column 12 is movably inserted into the second through hole 11 , and one end of the second connecting column 12 is fixedly connected to the force transmission rod 63 .

[0042] In the above embodiment, since the position of the main mounting column 61 is fixed, the horizontal position of the force transmission rod 63 fixedly connected to the output end of the hydraulic cylinder 65 is also fixed. However, during the up and down movement of the force transmission rod 63, the distance between the second connecting column 12 and the first connecting column 10 changes in real time. In addition, the distance between the first connecting column 10 and the hinge point of the driving lever 62 and the movable shielding plate 5 changes. In order to ensure that the end of the driving lever 62 away from the movable shielding plate 5 can adapt to these changes in real time, the present application provides a second through hole 11 that is longer than the first through hole 9 at the end of the driving lever 62 away from the movable shielding plate 5. This ensures that the force transmission rod 63 can smoothly drive the driving lever 62 to move in the vertical direction with the movable shielding plate 5. The lengths of the first through hole 9 and the second through hole 11 can be determined according to the actual swing range of the driving lever 62 during design.

[0043] The operating principle of this embodiment is as follows: when the radiator of cooling triangle 1 requires normal air flow, a hydraulic cylinder 65 drives a force transmission rod 63 and a driving lever 62, which move the multiple movable shielding panels 5 synchronously to the fixed shielding panels 4 above them. This allows ambient air to flow through the openings revealed by the removal of the movable shielding panels 5 and into the radiator of cooling triangle 1. In winter, when it is necessary to prevent the cold air from contacting the radiator of cooling triangle 1 and preventing it from freezing and cracking, a hydraulic cylinder 65 is activated, which moves the multiple movable shielding panels 5 synchronously downward via the force transmission rod 63 and a driving lever 62 until the movable shielding panels 5 cooperate with the fixed shielding panels 4 to completely seal the air inlet of cooling triangle 1. At this time, the gap between the movable shielding plate 5 and the fixed shielding plate 4 of the present application is sealed by the sealing rubber strip 7 on the movable shielding plate 5. The two ends of the movable shielding plate 5 are inserted into the guide groove 3, and its end is tightly attached to the inner wall of the guide groove 3. Compared with the shutters in the prior art, it effectively reduces the air leakage rate of the air inlet of the cooling triangle 1 when it needs to be closed in winter, reduces the risk of freezing damage to the radiator of the cooling triangle 1 due to air leakage, and correspondingly improves the anti-freeze effect.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air cooling tower antifreeze device, comprising a cooling triangle (1), characterized in that: Two vertical fixed guide rails (2) are symmetrically provided at the air inlet of the cooling triangle (1), and the two fixed guide rails (2) are respectively installed at the ends of the two radiators at the air inlet of the cooling triangle (1); The two fixed guide rails (2) are each provided with a guide groove (3) on the sides close to each other, and a plurality of fixed shielding plates (4) and a plurality of movable shielding plates (5) are sequentially and alternately arranged between the two guide grooves (3) in a vertical direction; The two ends of the fixed shielding plate (4) are respectively fixedly connected to the two guide grooves (3), and the two ends of the movable shielding plate (5) are respectively slidably connected to the two guide grooves (3); and the fixed shielding plate (4) is located in the guide groove (3) on the side close to the cooling triangle (1), and the movable shielding plate (5) is located in the guide groove (3) on the side away from the cooling triangle (1); The plurality of movable shielding panels (5) are connected to the same driving device (6), and the driving device (6) can drive the plurality of movable shielding panels (5) to move synchronously.

2. The air cooling tower antifreeze device according to claim 1, characterized in that: The guide groove (3) is provided with a mounting groove (31) and a guide groove (32) in parallel along its width direction; a plurality of the fixed shielding plates (4) are fixedly mounted in the mounting groove (31); and a plurality of the movable shielding plates (5) are movably mounted in the guide groove (32).

3. The air cooling tower antifreeze device according to claim 2, characterized in that: Two sealing rubber strips (7) are fixedly mounted on the upper and lower sides of the movable shielding plate (5), and one end of the sealing rubber strip (7) facing the cooling triangle (1) contacts the fixed shielding plate (4) on the adjacent side.

4. The air cooling tower antifreeze device according to any one of claims 1 to 3, characterized in that: The driving device (6) includes a main mounting column (61), the lower end of the main mounting column (61) is fixedly mounted on the ground outside the air inlet of the cooling triangle (1), one side of the main mounting column (61) is evenly mounted with a plurality of driving levers (62) in the vertical direction, the number of the driving levers (62) is the same as the number of the movable shielding plates (5), and the positions of the driving levers (62) correspond one to one with the plurality of movable shielding plates (5), one end of the driving lever (62) is hinged to the movable shielding plates (5) at the corresponding position, the middle position of the driving lever (62) is movably mounted on the main mounting column (61), and the plurality of driving levers are movably mounted on the same force transmission rod (63) away from one end of the cooling triangle (1), one side of the lower end of the force transmission rod (63) is fixedly connected to the output end of the hydraulic cylinder (65) through an angle iron (64), and the bottom of the cylinder body of the hydraulic cylinder (65) is fixedly mounted on the ground.

5. The air cooling tower antifreeze device according to claim 4, characterized in that: A plurality of fixing frames (8) are provided on the main mounting column (61) in a vertical direction. The fixing frames (8) include two side brackets (81). The ends of the two side brackets (81) that are close to each other are fixedly mounted on opposite side walls of the main mounting column (61) along the width direction of the air inlet of the cooling triangle (1), and the ends of the two side brackets (81) that are far away from each other are fixedly mounted on the two fixed guide rails (2).

6. The air cooling tower antifreeze device according to claim 4, characterized in that: A first through hole (9) is provided in the middle of the driving lever (62) along its length direction, a first connecting column (10) is movably inserted into the first through hole (9), and one end of the first connecting column (10) is fixedly connected to the main mounting column (61).

7. The air cooling tower antifreeze device according to claim 6, characterized in that: The driving lever (62) is provided with a second through hole (11) along its length direction at one end away from the movable shielding plate (5), a second connecting column (12) is movably inserted into the second through hole (11), and one end of the second connecting column (12) is fixedly connected to the force transmission rod (63).

Images