A wind deflector with adjustable ventilation area

Abstract

The utility model discloses an adjustable wind -shield device of ventilation area relates to cooling tower technical field, and this device includes: connecting support, ceiling, unfolding mechanism and wind -shield subassembly, and the ceiling fixedly arranged in the top of connecting support, and the end of connecting support is fixedly provided with fixed bolster, the top of fixed bolster is fixedly provided with the unfolding mechanism for automatic regulation ventilation area, and the top of unfolding mechanism is slidably provided with the wind -shield subassembly of wind -shield effect, the utility model discloses through motor drive first gear through synchronous belt drive, and the linkage design of combining transmission rod has guaranteed the synchronous action of cooling tower both sides wind -shield subassembly, has avoided uneven stress or jam problem in local. The adaptive design of sliding block and sliding groove and the direct connection of second synchronous belt and sliding block make the lifting process of the accumulated curtain stable and controllable, can respond to the ventilation area regulation demand under different environmental conditions fast, and simple and reliable mechanical structure reduces maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically a wind deflector with adjustable ventilation area. Background Technology

[0002] During winter operation of natural draft cooling towers in thermal power plants, cold northern regions face challenges such as severe icing inside the towers and decreased unit economic efficiency due to low ambient temperatures, large diurnal temperature differences, and the need for deep peak shaving by the units. Traditional cold-proofing measures, such as manually hanging wind deflectors, anti-icing rings, and louvers, have drawbacks including high labor intensity, high safety risks, delayed adjustment, and poor antifreeze and temperature control effects. They cannot adapt to dynamic changes in ambient temperature and unit load and are prone to damage to packing materials and freeze-thaw cycles in concrete structures. There is an urgent need for an intelligent wind deflector device that can automatically adjust the air intake area according to ambient temperature, circulating water temperature, and unit load to achieve safe and efficient winter cold-proofing and precise control of circulating water temperature, meeting the actual needs of thermal power plants for cold-end optimization and energy saving.

[0003] Based on this, an adjustable ventilation area windbreak device is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide a windbreak device with adjustable ventilation area to solve the problem of inconvenient adjustment of air intake area in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable ventilation area windbreak device includes: a connecting bracket, a canopy, an unfolding mechanism, and a windbreak component. The connecting bracket is fixedly installed on the outside of a cooling tower, the canopy is fixedly installed on the top of the connecting bracket, and a fixed bracket is fixedly installed at the end of the connecting bracket. An unfolding mechanism for automatically adjusting the ventilation area is fixedly installed on the top of the fixed bracket, and a windbreak component that can block the wind is slidably installed on the top of the unfolding mechanism.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0008] In one alternative embodiment: the unfolding mechanism includes an adjusting bracket fixedly mounted on the top of a fixed support, a motor fixedly mounted on the top of the adjusting bracket, a first gear fixedly mounted on the output end of the motor, a second gear rotatably mounted on the bottom of the adjusting bracket, the first gear and the second gear being driven by meshing through a first synchronous belt, a third gear fixedly mounted on the bottom of the second gear, the third gear being rotatably connected to the bottom of the adjusting bracket, a fourth gear rotatably mounted on the bottom of the adjusting bracket, the third gear and the fourth gear being driven by meshing through a second synchronous belt, and a transmission rod fixedly mounted on the central shaft of the second gear.

[0009] In one alternative: the windbreak assembly includes a sliding block slidably disposed on the top of the adjusting bracket, a fixing buckle fixedly disposed at one end of the sliding block, a fixing rod fixedly disposed at the other end of the fixing buckle by means of a pin, and a stacking curtain sleeved on the circumferential surface of the fixing rod.

[0010] In one alternative: the two ends of the transmission rod are respectively fixedly connected to the central shaft of the second gear of the two fixed brackets.

[0011] In one alternative: the top of the adjusting bracket is provided with a sliding groove that matches the sliding block.

[0012] In one alternative: the sliding block is fixedly connected to the second timing belt.

[0013] In one alternative: the fabric of the stacked curtain is made of PVC-coated knife-coated fabric.

[0014] In one alternative: a control room and control system are provided around the cooling tower. The control system includes a PLC controller, temperature sensors and a remote control terminal. The control system also includes a zone control module that divides the cooling tower into several zones in a circumferential direction. The opening degree of the stacking curtain in each zone can be adjusted independently or in combination.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a motor-driven first gear connected to a synchronous belt, combined with a linkage design of the transmission rod, to ensure the synchronous operation of the wind-blocking components on both sides of the cooling tower, avoiding problems such as uneven local force or jamming. The matching design of the sliding block and the sliding groove, as well as the direct connection between the second synchronous belt and the sliding block, makes the lifting and lowering process of the stacking curtain smooth and controllable, enabling rapid response to the ventilation area adjustment needs under different environmental conditions. At the same time, the mechanical structure is simple and reliable, reducing maintenance costs.

[0017] 2. This invention utilizes real-time data acquisition and analysis from a PLC controller and temperature sensors, combined with the independent adjustment function of the zone control module, to achieve precise control over the airflow requirements of different circumferential zones of the cooling tower. For example, the curtain can be fully closed in low-temperature zones to reduce cold air intrusion, while the opening can be dynamically adjusted in high-temperature zones to balance heat dissipation. The feedforward control function predicts temperature change trends and adjusts the curtain state in advance, effectively avoiding the lag of traditional adjustment methods. Furthermore, the configuration of a remote control terminal and a waterproof camera not only supports remote monitoring and operation but also enhances the safety of system operation, providing a reliable guarantee for cold-end optimization and energy conservation in thermal power plants. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the fixed bracket in this utility model.

[0020] Figure 3 This is a schematic diagram of the unfolding mechanism in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the first synchronous belt in this utility model.

[0022] Figure 5 This is a schematic diagram of the stacking curtain structure in this utility model.

[0023] Figure reference numerals: 1. Cooling tower; 2. Connecting bracket; 3. Roof; 4. Fixed bracket; 5. Adjusting bracket; 6. Motor; 7. First gear; 8. Second gear; 9. First synchronous belt; 10. Third gear; 11. Fourth gear; 12. Second synchronous belt; 13. Transmission rod; 14. Sliding block; 15. Fixing buckle; 16. Fixing rod; 17. Stacking curtain. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] In one embodiment, such as Figures 1-5 As shown, an adjustable ventilation area windbreak device includes: a connecting bracket 2, a canopy 3, an unfolding mechanism, and a windbreak component. The connecting bracket 2 is fixedly installed on the outside of the cooling tower 1, the canopy 3 is fixedly installed on the top of the connecting bracket 2, and a fixed bracket 4 is fixedly installed at the end of the connecting bracket 2. The feature is that the top of the fixed bracket 4 is fixedly provided with an unfolding mechanism for automatically adjusting the ventilation area, and the top of the unfolding mechanism is slidably provided with a windbreak component that can play a windbreak role.

[0026] Cooling tower 1 is constructed with a circumferentially welded steel frame, and a concrete foundation is provided at the bottom of the support to enhance stability. The roof 3 is made of 3mm thick galvanized steel sheet to withstand the impact of falling ice in winter.

[0027] In one embodiment, such as Figures 2-4 As shown, the unfolding mechanism includes an adjusting bracket 5 fixedly mounted on the top of the fixed bracket 4. A motor 6 is fixedly mounted on the top of the adjusting bracket 5. A first gear 7 is fixedly mounted on the output end of the motor 6. A second gear 8 is rotatably mounted on the bottom of the adjusting bracket 5. The first gear 7 and the second gear 8 are meshed and driven by a first synchronous belt 9. A third gear 10 is fixedly mounted on the bottom of the second gear 8. The third gear 10 is rotatably connected to the bottom of the adjusting bracket 5. A fourth gear 11 is rotatably mounted on the bottom of the adjusting bracket 5. The third gear 10 and the fourth gear 11 are meshed and driven by a second synchronous belt 12. A transmission rod 13 is fixedly mounted on the central shaft of the second gear 8.

[0028] The two ends of the transmission rod 13 are fixedly connected to the central shaft of the second gear 8 of the two fixed brackets 4 respectively. The transmission rod 13 transmits power to the gear set on the other side to achieve synchronous action on both sides. Only one motor 6 is needed for transmission, which reduces costs.

[0029] In one embodiment, such as Figure 5 As shown, the windproof assembly includes a sliding block 14 slidably disposed on the top of the adjusting bracket 5. A fixing buckle 15 is fixedly disposed at the end of the sliding block 14. A fixing rod 16 is fixedly disposed at the other end of the fixing buckle 15 by means of a pin. An accumulation curtain 17 is sleeved on the circumferential surface of the fixing rod 16.

[0030] The top of the adjusting bracket 5 has a sliding groove adapted to the sliding block 14. The sliding block 14 is fixedly connected to the second synchronous belt 12. When the sliding block 14 slides under the drive of the second synchronous belt 12, the stacking curtain 17 retracts and drives the other sliding blocks 14 to slide. The curtain fabric of the stacking curtain 17 is made of PVC coated knife-coated fabric with a weight ≥700g / m². 2 The tensile strength is >3000N / 5cm in the warp direction and >3000N / 5cm in the weft direction. The surface is treated with flame retardant and UV resistant coatings. Hot-dip galvanized steel pipes (DN50, 600mm spacing) are fixed on both sides of the curtain fabric to form a wind-resistant reinforced structure.

[0031] The first gear 7 at the output end of motor 6 drives the second gear 8 to rotate via the first synchronous belt 9. The third gear 10 at the bottom of the second gear 8 meshes with the fourth gear 11 via the second synchronous belt 12. A transmission rod 13 is fixed to the central shaft of the second gear 8, which transmits power to the gear set on the other side to achieve synchronous operation on both sides. The second synchronous belt 12 is fixedly connected to the sliding block 14, which drives the sliding block 14 to move along the sliding groove at the top of the adjusting bracket 5. In turn, the lifting and lowering of the stacking curtain 17 is controlled by the fixing buckle 15 and the fixing rod 16 to adjust the ventilation area.

[0032] A control room and control system are provided around the cooling tower 1. The control system includes a PLC controller, temperature sensors and remote control terminals. The control system also includes a zone control module, which divides the cooling tower 1 into several zones in a circumferential direction. The opening degree of the stacking curtain 17 in each zone can be adjusted independently or in combination.

[0033] PLC controller: Receives circulating water outlet temperature signal from temperature sensor and ambient temperature data;

[0034] Zoned control module: Divides the cooling tower circumferentially into 8 zones, each containing 5-6 stacking curtains 17, which can be adjusted independently or in combination. For example, in winter, the curtains on the windward side are fully closed to block cold air, while the opening of the curtains on the leeward side is adjusted as needed;

[0035] Remote control terminal: Located on the host computer in the central control room, supporting manual / automatic mode switching. In automatic mode, the system adjusts the curtain height in real time according to preset temperature thresholds (lower limit 10℃, upper limit 15℃): when the temperature is below the lower limit, the curtain gradually lowers to reduce the air intake; when it is above the upper limit, it gradually rises.

[0036] Feedforward control function: By analyzing temperature change trends, the curtain opening is adjusted in advance. For example, if a nighttime temperature drop is predicted, the opening is reduced in advance to minimize heat loss;

[0037] Monitoring system: Eight waterproof cameras are installed around the cooling tower to monitor the status of the curtain and the surrounding environment in real time, and the images are transmitted to the host computer interface in the central control room.

[0038] The above embodiment discloses a windbreak device with adjustable ventilation area, wherein: the first gear 7 at the output end of the motor 6 drives the second gear 8 to rotate via the first synchronous belt 9, and the third gear 10 at the bottom of the second gear 8 meshes with the fourth gear 11 via the second synchronous belt 12. A transmission rod 13 is fixed to the central shaft of the second gear 8, and the transmission rod 13 transmits power to the gear set on the other side to achieve synchronous operation on both sides. The second synchronous belt 12 is fixedly connected to the sliding block 14, driving the sliding block 14 to move along the sliding groove at the top of the adjusting bracket 5, and then controlling the raising and lowering of the stacking curtain 17 through the fixing buckle 15 and the fixing rod 16, which can quickly respond to the ventilation area adjustment needs under different environmental conditions;

[0039] Temperature sensors installed around cooling tower 1 monitor the circulating water outlet temperature and ambient temperature in real time. The data is analyzed by a PLC controller, and combined with a zone control module, cooling tower 1 is divided into eight circumferential zones. The stacking curtains 17 in each zone can be adjusted independently or in combination. For example, when the temperature is below a preset threshold, the PLC controller instructs motor 6 to drive the stacking curtains 17 to descend gradually to reduce airflow; conversely, they rise. The remote control terminal supports manual / automatic mode switching and has a feedforward control function, which adjusts the curtain opening in advance by predicting temperature change trends. Simultaneously, a waterproof camera monitors the curtain status in real time to ensure accurate temperature control and safe operation.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A windbreak device with adjustable ventilation area, comprising: The connecting bracket (2), the roof (3), the unfolding mechanism and the windproof assembly are provided. The connecting bracket (2) is fixedly installed on the outside of the cooling tower (1), the roof (3) is fixedly installed on the top of the connecting bracket (2), and the end of the connecting bracket (2) is fixedly provided with a fixing bracket (4). The feature is that: the top of the fixed bracket (4) is fixedly provided with an unfolding mechanism for automatically adjusting the ventilation area, and the top of the unfolding mechanism is slidably provided with a windproof component that can block the wind.

2. The windbreak device with adjustable ventilation area according to claim 1, characterized in that, The unfolding mechanism includes an adjusting bracket (5) fixedly mounted on the top of the fixed bracket (4). A motor (6) is fixedly mounted on the top of the adjusting bracket (5). A first gear (7) is fixedly mounted on the output end of the motor (6). A second gear (8) is rotatably mounted on the bottom of the adjusting bracket (5). The first gear (7) and the second gear (8) are meshed and driven by a first synchronous belt (9). A third gear (10) is fixedly mounted on the bottom of the second gear (8). The third gear (10) is rotatably connected to the bottom of the adjusting bracket (5). A fourth gear (11) is rotatably mounted on the bottom of the adjusting bracket (5). The third gear (10) and the fourth gear (11) are meshed and driven by a second synchronous belt (12). A transmission rod (13) is fixedly mounted on the central shaft of the second gear (8).

3. The windbreak device with adjustable ventilation area according to claim 2, characterized in that, The windbreak assembly includes a sliding block (14) slidably disposed on the top of the adjusting bracket (5). A fixing buckle (15) is fixedly disposed at the end of the sliding block (14). A fixing rod (16) is fixedly disposed at the other end of the fixing buckle (15) by means of a pin. An accumulation curtain (17) is sleeved on the circumferential surface of the fixing rod (16).

4. The windbreak device with adjustable ventilation area according to claim 2, characterized in that, The two ends of the transmission rod (13) are respectively fixedly connected to the central shaft of the second gear (8) of the two fixed brackets (4).

5. A windbreak device with adjustable ventilation area according to claim 3, characterized in that, The top of the adjusting bracket (5) is provided with a sliding groove that is adapted to the sliding block (14).

6. A windbreak device with adjustable ventilation area according to claim 3, characterized in that, The sliding block (14) is fixedly connected to the second synchronous belt (12).

7. A windbreak device with adjustable ventilation area according to claim 3, characterized in that, The fabric of the stacking curtain (17) is made of PVC coated knife-coated fabric.

8. A windbreak device with adjustable ventilation area according to claim 3, characterized in that, The cooling tower (1) is surrounded by a control room and a control system. The control system includes a PLC controller, a temperature sensor and a remote control terminal. The control system also includes a zone control module that divides the cooling tower (1) into several zones in a circumferential direction. The opening degree of the stacking curtain (17) in each zone can be adjusted independently or in combination.

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