Anti-freezing protection device of cross-flow cooling tower

Abstract

The utility model discloses an anti-freezing protection device of a cross-flow cooling tower, which comprises a tower body, a movable plate is fixedly mounted at the front end of the tower body, a connecting block is fixedly mounted on the right side of the movable plate, and a sliding groove is fixedly connected to the right side of the connecting block; the fixed block is fixedly installed at the upper end of the left side of the movable plate, a gear is fixedly installed behind the fixed block, and the left side of the gear is connected with a lifting plate in an engaged mode; the shell is fixedly installed on the left side of the lifting plate, a temperature sensor and air inlets are fixedly installed on the left side of the shell, and the air inlets are fixedly installed on the two sides of the outer end of the tower body; and the spraying pipeline is fixedly installed in the tower body, and the problems that in the background technology, cold air enters the cooling tower through the air inlet, so that a water source in the cooling tower is cooled, the air inlet is frozen, the air inlet is blocked, and the air inlet is subsequently closed and cannot be normally used are solved.

Description

Technical Field

[0001] This utility model relates to the field of crossflow cooling tower technology, specifically an antifreeze protection device for crossflow cooling towers. Background Technology

[0002] A crossflow cooling tower is a device that cools water. Water flows vertically down from the top of the tower, while air flows horizontally through the water-spraying packing. The airflow and water flow are perpendicular. The antifreeze protection device of a crossflow cooling tower is mainly used to prevent the circulating water from freezing in low-temperature winter environments, thus avoiding equipment damage. Common antifreeze measures can be divided into two categories: passive antifreeze and active antifreeze.

[0003] The existing Chinese utility model patent with publication number CN219776404U provides a freeze-resistant square crossflow cooling tower, including a square crossflow cooling tower body. A set of air inlets is opened on the left side wall of the square crossflow cooling tower body, and a set of air outlets is opened on the right side wall. Packing material is fixedly connected to the inner wall of the square crossflow cooling tower body, and a guide plate is fixedly connected to the upper surface of the packing material. Two symmetrical antifreeze discharge mechanisms are provided inside the square crossflow cooling tower body, each including a conveying pipe. The outer surface of the conveying pipe is fixedly connected to the inner wall of the square crossflow cooling tower body. Through the cooperation of the guide plate, the antifreeze discharge mechanism, and the limiting mechanism, it can prevent the internal through-holes of the packing material from condensing into ice due to low-temperature steam, thereby avoiding blockage of the internal through-holes of the packing material and reducing the cooling tower's working efficiency, ensuring the overall working efficiency of the device.

[0004] In winter, the existing cooling tower experiences severe cooling. Low temperatures allow cold air to enter through the air inlet, causing the internal water to cool down and ice to form at the inlet, blocking it. This prevents the tower from functioning properly, even after sealing the inlet. Furthermore, the inlet size cannot be adjusted due to temperature limitations, resulting in a large amount of cold air entering the unit and affecting its operation.

[0005] Therefore, those skilled in the art have provided an antifreeze protection device for crossflow cooling towers to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this utility model is to provide an anti-freeze protection device for a crossflow cooling tower, so as to solve the problem mentioned in the background art that cold air enters the cooling tower through the air inlet, causing the water inside the cooling tower to cool down, ice to form at the air inlet, blocking the air inlet, and causing the air inlet to be sealed off and unable to be used normally.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An antifreeze protection device for a crossflow cooling tower, comprising:

[0009] The tower body has a movable plate fixedly installed at its front end, and a connecting block fixedly installed on the right side of the movable plate, with a sliding groove fixedly connected to the right side of the connecting block.

[0010] A fixed block is fixedly installed on the upper left side of the movable plate, and a gear is fixedly installed behind the fixed block. A lifting plate is meshed with the left side of the gear.

[0011] The outer casing is fixedly installed on the left side of the lifting plate, and a temperature sensor is fixedly installed on the left side of the outer casing.

[0012] As a further improvement of this utility model:

[0013] Air inlets, which are fixedly installed on both sides of the outer end of the tower body;

[0014] The spray pipe is fixedly installed inside the tower body, and an electric heating tape is fixedly connected to the upper end of the spray pipe.

[0015] The fan is fixedly installed at the upper end of the tower body;

[0016] Heating belt, which is fixedly installed inside the tower body.

[0017] As a further improvement of this utility model:

[0018] A water tank is fixedly installed at the upper end of the air inlet, and a hot water pipe is fixedly connected to the lower end of the water tank. A spray pipe is fixedly installed at the lower end of the hot water pipe.

[0019] Mounting rings are fixedly installed on both sides of the upper end of the hot water pipe;

[0020] A delivery pipe is fixedly installed on the right side of the hot water pipe, and a connecting pipe is fixedly installed on the right side of the delivery pipe.

[0021] As a further improvement of this utility model: the sliding groove and the rear end of the outer shell are fixedly installed on the left and right sides of the air inlet, and the fixing block is L-shaped.

[0022] As a further improvement of this utility model: the heating belt is fixedly installed inside the water collection tank, and the area of ​​the air inlet is smaller than the area of ​​the moving plate.

[0023] As a further improvement of this utility model: the left and right sides of the water tank are inclined downwards, the mounting ring is symmetrically installed on the left and right sides of the mounting ring with the hot water pipe as the central reference, and the installation position of the spray pipe is higher than the installation position of the air inlet.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] A hot water pipe is installed above the air inlet and connected to the delivery pipe. It is fixed to the air inlet with a mounting ring. When the temperature drops, the temperature sensor monitors the temperature and transmits it to the PLC controller to control the heat delivery. Hot water is sprayed onto the air inlet through the spray pipe to melt the ice that has formed there. A water trough is added to the upper part of the hot water pipe. The left and right sides of the water trough are inclined downwards. When rainwater falls into the water trough, it falls through the sides of the trough, reducing the amount of rainwater falling onto the air inlet and reducing ice formation at the air inlet.

[0026] The size of the air intake at the air inlet is adjusted by using a movable plate. The movable plate has an inclined structure to guide the hot water as it falls. A gear assembly is added to the left side of the movable plate. The gear is connected to the lifting plate by meshing, and the gear moves on the lifting plate, which in turn moves the movable plate to adjust the height of the air inlet and thus adjusts the size of the air inlet. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an antifreeze protection device for a crossflow cooling tower.

[0028] Figure 2 This is a schematic diagram of the structure of a cooling tower in an antifreeze protection device for a crossflow cooling tower.

[0029] Figure 3 This is a schematic diagram of the spray pipe structure in an antifreeze protection device for a crossflow cooling tower.

[0030] Figure 4 This is a schematic diagram of the structure of a baffle plate in an antifreeze protection device for a crossflow cooling tower.

[0031] In the diagram: 1. Tower body; 2. Air inlet; 3. Spray pipe; 4. Electric heating tape; 5. Fan; 6. Heating belt; 7. Water tank; 8. Hot water pipe; 9. Spray pipe; 10. Mounting ring; 11. Conveying pipe; 12. Connecting pipe; 13. Moving plate; 14. Connecting block; 15. Sliding groove; 16. Fixing block; 17. Gear; 18. Lifting plate; 19. Outer shell; 20. Temperature sensor. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0033] Please see Figure 1-4 An antifreeze protection device for a crossflow cooling tower, comprising:

[0034] Tower body 1, a movable plate 13 is fixedly installed at the front end of tower body 1, and a connecting block 14 is fixedly installed on the right side of movable plate 13, and a sliding groove 15 is fixedly connected to the right side of connecting block 14.

[0035] A fixed block 16 is fixedly installed on the upper left side of the movable plate 13, and a gear 17 is fixedly installed behind the fixed block 16. A lifting plate 18 is meshed with the left side of the gear 17.

[0036] The outer casing 19 is fixedly installed on the left side of the lifting plate 18, and a temperature sensor 20 is fixedly installed on the left side of the outer casing 19.

[0037] The upper end of the movable plate 13 is inclined forward, and there are two connecting blocks 14. The connecting blocks 14 and the sliding groove 15 form a sliding connection.

[0038] The upper end of the movable plate 13 is inclined forward, and there are two connecting blocks 14. The connecting blocks 14 and the sliding groove 15 form a sliding connection.

[0039] In this embodiment, the movable plate 13 is a vertically lifting baffle. The air intake volume is controlled by adjusting the opening size, which increases the control of the area at the air inlet 2. There are two connecting blocks 14, and the connecting blocks 14 and the sliding groove 15 are slidably connected to ensure that the movable plate 13 can be lifted and lowered smoothly and avoid jamming. A limit switch is installed at the bottom of the sliding groove 15 to prevent the movable plate 13 from overtravel. The lifting plate 18 is a rack and pinion structure that meshes with the gear 17 to move the movable plate 13 linearly. The PLC controller outputs a signal to drive the motor of the gear 17 to move along the trajectory of the lifting plate 18 and drive the movable plate 13 to adjust its height. The housing 19 houses the temperature sensor 20, which is a PT100 model. The temperature sensor 20 senses the temperature at the outer end of the air inlet 2 and starts the device.

[0040] Air inlet 2 is fixedly installed on both sides of the outer end of the tower body 1;

[0041] Spray pipe 3 is fixedly installed inside tower body 1, and electric heating tape 4 is fixedly connected to the upper end of spray pipe 3.

[0042] Fan 5 is fixedly installed at the upper end of tower body 1;

[0043] Heating belt 6 is fixedly installed inside tower body 1.

[0044] The heating band 6 is fixedly installed inside the water collection tank, and the area of ​​the air inlet 2 is smaller than the area of ​​the movable plate 13.

[0045] In this embodiment, the air inlet 2 is symmetrically installed with the tower body 1 as the center, ensuring uniform airflow distribution. The spray pipe 3 transports water for use. The electric heating tape 4 is wrapped around the spray pipe 3 to heat the spray pipe 3 and prevent ice formation, which would affect its use. The fan 5 is located at the top or side of the tower body 1 to force the hot air inside the tower out and create a negative pressure to draw in external cold air. The heating belt 6 is evenly distributed on the bottom and side walls of the tank to change the temperature inside the water collection tank and prevent the water in the tank from freezing. Example

[0046] Please see Figure 2 This embodiment provides a technical solution based on Embodiment 1:

[0047] Water tank 7 is fixedly installed at the upper end of air inlet 2, and hot water pipe 8 is fixedly connected to the lower end of water tank 7. Spray pipe 9 is fixedly installed at the lower end of hot water pipe 8.

[0048] Mounting ring 10 is fixedly installed on both sides of the upper end of hot water pipe 8;

[0049] The delivery pipe 11 is fixedly installed on the right side of the hot water pipe 8, and a connecting pipe 12 is fixedly installed on the right side of the delivery pipe 11.

[0050] The left and right sides of the water tank 7 are inclined downwards. The mounting ring 10 is symmetrically installed on the left and right sides of the mounting ring 10 with the hot water pipe 8 as the center reference. The installation position of the spray pipe 9 is higher than the installation position of the air inlet 2.

[0051] In this embodiment, an open water tank 7 is installed at the top of the air inlet 2. The sides of the water tank 7 are designed as inclined guide plates (V-shaped). After collecting rainwater, the rainwater falls through the inclined structure on both sides to avoid splashing caused by vertical falling. A vertical pipe branching off from the delivery pipe 11 extends to the air inlet 2. A multi-hole spray pipe 9 installed at the end of the hot water pipe 8 sprays hot water evenly. The temperature of the air inlet 2 is increased by spraying hot water. The spray range of the spray pipe 9 covers the entire cross-section of the air inlet 2 to ensure uniform heating. The hot water flow rate can be adjusted by a valve to match the temperature requirements. The hot water pipe 8 is installed on the air inlet 2 using the mounting ring 10.

[0052] The working principle of this utility model is as follows: A water tank 7 is installed on the hot water pipe 8. The V-shaped shape of the water tank 7 allows rainwater to fall to both sides. A hot water device is added to the air inlet 2. The delivery pipe 11 is connected to an external heat source. The hot water pipes 8 are symmetrically distributed on both sides of the air inlet 2 and connected to the delivery pipe 11 through a three-way valve. When the delivery pipe 11 delivers hot water into the hot water pipe 8, the hot water is sprayed out to the air inlet 2 through the lower spray pipe 9 to melt the ice. The spray pipe 9 uses a wide-angle atomizing nozzle to cover the high-ice-accumulation area at the edge of the air inlet 2. In order to reduce the air inlet... With two wind sources, a movable plate 13 is installed on the air inlet 2. The movable plate 13 is slidably connected to the sliding groove 15 via a connecting block 14. A limit switch is installed at the bottom of the sliding groove 15 to prevent the movable plate 13 from falling off due to overtravel. The movable plate 13 is connected to the gear 17 by a fixing block 16. The gear 17 is driven by a motor. The lifting plate 18 has a vertical rack and pinion structure. When the temperature sensor 20 senses that the external temperature is low, the gear 17 is started by the PLC controller to add a backup temperature sensor 20. The backup temperature sensor 20 is of model MBT 5250. It automatically switches when PT100 fails. The movable plate 13 is driven to move along the trajectory of the lifting plate 18 by the meshing connection between the gear 17 and the lifting plate 18. The movable plate 13 is driven to adjust the size of the air inlet 2.

Claims

1. A freeze protection device for a crossflow cooling tower, characterized in that, include: Tower body (1), a movable plate (13) is fixedly installed at the front end of the tower body (1), and a connecting block (14) is fixedly installed on the right side of the movable plate (13), and a sliding groove (15) is fixedly connected to the right side of the connecting block (14). A fixed block (16) is fixedly installed on the upper left side of the movable plate (13), and a gear (17) is fixedly installed behind the fixed block (16). A lifting plate (18) is meshed with the left side of the gear (17). The outer casing (19) is fixedly installed on the left side of the lifting plate (18), and a temperature sensor (20) is fixedly installed on the left side of the outer casing (19).

2. The antifreeze protection device for a crossflow cooling tower according to claim 1, characterized in that, Air inlet (2), the air inlet (2) is fixedly installed on both sides of the outer end of the tower body (1); Spray pipe (3), the spray pipe (3) is fixedly installed inside the tower body (1), and the upper end of the spray pipe (3) is fixedly connected to an electric heating tape (4). Fan (5), the fan (5) is fixedly installed at the upper end of the tower body (1); Heating belt (6) is fixedly installed inside the tower body (1).

3. The antifreeze protection device for a crossflow cooling tower according to claim 2, characterized in that, Water tank (7), the water tank (7) is fixedly installed at the upper end of the air inlet (2), and a hot water pipe (8) is fixedly connected to the lower end of the water tank (7), and a spray pipe (9) is fixedly installed at the lower end of the hot water pipe (8). Mounting ring (10), which is fixedly installed on both sides of the upper end of the hot water pipe (8); The delivery pipe (11) is fixedly installed on the right side of the hot water pipe (8), and a connecting pipe (12) is fixedly installed on the right side of the delivery pipe (11).

4. The antifreeze protection device for a crossflow cooling tower according to claim 1, characterized in that, The upper end of the movable plate (13) is inclined forward, and there are two connecting blocks (14). The connecting blocks (14) and the sliding groove (15) form a sliding connection.

5. The antifreeze protection device for a crossflow cooling tower according to claim 1, characterized in that, The sliding groove (15) and the rear end of the outer shell (19) are fixedly installed on the left and right sides of the air inlet (2), and the fixing block (16) is L-shaped.

6. The antifreeze protection device for a crossflow cooling tower according to claim 2, characterized in that, The heating belt (6) is fixedly installed inside the water collection tank, and the area of ​​the air inlet (2) is smaller than the area of ​​the moving plate (13).

7. The antifreeze protection device for a crossflow cooling tower according to claim 3, characterized in that, The water tank (7) has a downward inclined structure on the left and right sides. The mounting ring (10) is symmetrically installed on the left and right sides of the mounting ring (10) with the hot water pipe (8) as the center reference. The installation position of the spray pipe (9) is higher than the installation position of the air inlet (2).

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