High-temperature-resistant composite flow closed cooling tower

Abstract

The utility model relates to industrial cooling equipment technical field, concretely is a kind of high-temperature-resistant composite flow closed cooling tower, comprising: tower body, tower body top surface is equipped with fan, fan outside is equipped with top air inlet, tower body side is equipped with side air inlet, top air inlet inside is equipped with heat exchanger and spraying structure, top air inlet top surface is equipped with flow guide structure, heat exchanger is close to the side of fan and is equipped with water collector, heat exchanger below is equipped with filler.The utility model, by setting flow guide structure, utilize the flow guide plate and isolate top air inlet and fan, avoid hot air recirculation, guarantee the heat dissipation efficiency under high-temperature condition;Flow guide structure adopts half-enclosing structure and is located at air inlet, and will not increase air inlet resistance and exhaust resistance, guarantee air inlet efficiency;By controlling the angle of flow guide plate, the air inlet needs under different conditions can be satisfied, when flow guide plate is vertical, can block crosswind, when flow guide plate is horizontal, can cover air inlet to avoid heat exchanger supercooling.

Description

Technical Field

[0001] This utility model relates to the field of industrial cooling equipment technology, specifically a high-temperature resistant composite flow closed-loop cooling tower. Background Technology

[0002] Closed-circuit cooling towers, as highly efficient industrial cooling equipment, are widely used in industries such as metallurgy, chemical engineering, and power generation. Their core principle is to utilize the process fluid inside the coils to exchange heat indirectly with the sprayed water and air outside the tower, ultimately dissipating the heat into the atmosphere through water evaporation and sensible heat exchange. Based on the airflow direction, they can be divided into three types: counter-flow, cross-flow, and combined flow. Among them, combined flow cooling towers combine the advantages of counter-flow and cross-flow heat exchange, utilizing a combined airflow path to improve heat exchange efficiency.

[0003] However, because the fan is positioned at the top and close to the top air inlet, hot air recirculation is highly likely to occur, meaning that the just-exhausted high-temperature exhaust gas is re-drawn into the top air inlet. Under high-temperature operating conditions, excessively high inlet air temperature will affect the heat exchange efficiency of the cooler, reducing the efficiency of the cooling tower. In some technologies, increasing the height of the fan duct or installing a guide shroud can increase the exhaust height or change the direction of the high-temperature airflow, thereby reducing hot air recirculation. However, in actual operation, a fixed-angle guide shroud or a tall fan duct will increase exhaust resistance and increase the fan's energy consumption. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-temperature resistant composite flow closed-loop cooling tower.

[0005] The technical solution of this utility model is: A high-temperature resistant composite flow closed-loop cooling tower, comprising: The tower body has a fan on its top surface, a top air inlet on the outside of the fan, a side air inlet on the side of the tower body, a heat exchanger and a spray structure inside the top air inlet, a flow guiding structure on the top surface of the top air inlet, a water collector on the side of the heat exchanger near the fan, and packing material below the heat exchanger. The airflow guiding structure includes a guide plate, which is rotatably mounted on the side air inlet near the fan, and is used to block the top air inlet and the fan.

[0006] Preferably, the top air inlet end face is symmetrically provided with side baffles via a fixed base, and the guide plate is rotatably installed between the side baffles via a rotating shaft.

[0007] Preferably, one end of the rotating shaft is connected to a power source, which is used to drive the guide plate to rotate.

[0008] Preferably, the rotation angle of the guide plate is controllable, with a rotation range of 0-90°, and the top air inlet is closed when the guide plate is rotated to a horizontal position.

[0009] Preferably, the side baffle can be fan-shaped, triangular, or square, and the side baffle is provided with an arc-shaped guide groove.

[0010] Preferably, the guide plate has guide posts at both ends, the guide posts passing through the guide groove and being able to slide along the guide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting a flow guiding structure, uses a flow guiding plate to isolate the top air inlet and the fan, avoiding hot air recirculation and ensuring heat dissipation efficiency under high-temperature conditions; the flow guiding structure adopts a semi-enclosed structure and is located at the air inlet, which does not increase the air intake resistance and exhaust resistance, ensuring air intake efficiency; by controlling the angle of the flow guiding plate, it can meet the air intake needs under different operating conditions. When the flow guiding plate is vertical, it can block the side wind; when the flow guiding plate is horizontal, it can cover the air inlet to prevent the heat exchanger from being overcooled. Attached Figure Description

[0012] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the flow guiding component structure in this utility model; Figure 4 This is a second schematic diagram of the overall structure of this utility model.

[0013] The meanings of the labels in the diagram are as follows: 1. Tower body; 2. Top air inlet; 3. Side air inlet; 4. Heat exchanger; 5. Packing; 6. Water collector; 7. Fan; 8. Circulating pump; 9. Spray pipe; 10. Fixed base; 11. Side baffle; 12. Rotating shaft; 13. Guide plate; 14. Guide groove; 15. Guide column; 16. Power source. Detailed Implementation

[0014] 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.

[0015] Example 1: Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments: A high-temperature resistant composite flow closed-loop cooling tower, comprising: The tower body 1 has a fan 7 on its top surface, a top air inlet 2 on the outside of the fan 7, a side air inlet 3 on the side of the tower body 1, a heat exchanger 4 and a spray structure inside the top air inlet 2, a flow guiding structure on the top surface of the top air inlet 2, a water collector 6 on the side of the heat exchanger 4 near the fan 7, and packing 5 below the heat exchanger 4.

[0016] The fan 7 is used to exhaust air outwards, drawing in fresh air from the top air inlet 2 and the side air inlet 3.

[0017] Heat exchanger 4 is used to introduce the substance to be cooled.

[0018] The spray structure includes a circulating pump 8 and a spray pipe 9. The circulating pump 8 is used to draw water out of the tower body 1 and then spray it out from the spray pipe 9. The sprayed water will spray onto the heat exchanger 4 for heat exchange. When the water falls onto the packing 5, it is cooled by the side air.

[0019] The water collector 6 is used to remove water from the airflow and prevent excessive water from being discharged from the fan 7.

[0020] The airflow guiding structure includes a guide plate 13, which is rotatably positioned on the side air inlet 3 near the fan 7 to block the top air inlet 2 and the fan 7.

[0021] The deflector 13 is used to isolate the hot air discharged from the fan 7 and the top air inlet 2, preventing the hot air discharged from the fan 7 from being recirculated.

[0022] The top air inlet 2 has side baffles 11 symmetrically arranged on the end face via a fixed base 10, and the guide plate 13 is rotatably installed between the side baffles 11 via a rotating shaft 12.

[0023] The shape of the mounting base 10 is adapted to the top air inlet 2, and a through hole is provided in the middle for fresh air to enter.

[0024] The side baffle 11 is fixedly connected to the mounting base 10 by screws or welding. It is used to block side air intake, prevent hot air from entering the top air intake 2 from the side, and limit the position of the guide plate 13.

[0025] One end of the rotating shaft 12 is connected to a power source 16, which is used to drive the guide plate 13 to rotate.

[0026] The power source 16 can be a servo motor, which makes it easy to control the rotation angle of the guide vane 13, and the self-locking structure of the servo motor can ensure the wind resistance of the guide vane 13.

[0027] The rotation angle of the guide vane 13 is controllable, with a rotation range of 0-90°. When the guide vane 13 is rotated to a horizontal position, it just closes the top air inlet 2.

[0028] When the deflector 13 is rotated to a vertical position, it has the best blocking effect on the hot airflow and can also block the side wind, ensuring that the hot airflow discharged by the fan 7 can rise vertically to a sufficient height before being blown away by the wind, preventing it from entering the negative pressure zone of the side air inlet 3.

[0029] In rainy conditions, the deflector 13 can be set to 30-60° to block most of the rainwater.

[0030] When the machine is stopped, the baffle plate 13 can be rotated to a horizontal position to protect the heat exchanger 4.

[0031] The side baffle 11 can be fan-shaped, triangular or square, and the side baffle 11 is provided with an arc-shaped guide groove 14.

[0032] In this embodiment, the side baffle 11 is fan-shaped, which can block the hot airflow discharged by the fan 7 while reducing the obstruction to the fresh air. The center of the guide groove 14 is located on the axis of the rotating shaft 12.

[0033] The guide plate 13 has guide posts 15 at both ends, which pass through the guide groove 14 and can slide along the guide groove 14.

[0034] The guide post 15 can be made of bolts. The guide post 15, together with the guide groove 14, can limit the rotation direction of the head of the guide plate 13.

[0035] Working principle: The substance that needs to be cooled is introduced into the heat exchanger 4. The fan 7 operates to draw in fresh air from the top air inlet 2 and the side air inlet 3. After passing through the heat exchanger 4, the packing 5 and the water collector 6, the air is discharged from the top surface.

[0036] The circulating pump 8 operates to extract water from the tower body 1 and then spray it out from the spray pipe 9. The sprayed water will splash onto the heat exchanger 4 for heat exchange. When the water falls onto the packing 5, it is cooled by the side air.

[0037] The water collector 6 is used to remove water from the airflow and prevent excessive water from being discharged from the fan 7.

[0038] The state of the guide vane 13 is controlled by the power source 16 according to the operating conditions.

[0039] When the deflector 13 is rotated to a vertical position, it has the best blocking effect on the hot airflow and can also block the side wind, ensuring that the hot airflow discharged by the fan 7 can rise vertically to a sufficient height before being blown away by the wind, preventing it from entering the negative pressure zone of the side air inlet 3.

[0040] In rainy conditions, the deflector 13 can be set to 30-60° to block most of the rainwater.

[0041] When the machine is stopped, the baffle plate 13 can be rotated to a horizontal position to protect the heat exchanger 4.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant composite flow closed-loop cooling tower, characterized in that, include: The tower body (1) is provided with a fan (7) on the top surface of the tower body (1), a top air inlet (2) is provided on the outside of the fan (7), a side air inlet (3) is provided on the side of the tower body (1), a heat exchanger (4) and a spray structure are provided inside the top air inlet (2), a flow guiding structure is provided on the top surface of the top air inlet (2), a water collector (6) is provided on the side of the heat exchanger (4) near the fan (7), and packing (5) is provided below the heat exchanger (4); The flow guiding structure includes a flow guide plate (13), which is rotatably disposed on the side air inlet (3) near the fan (7) to block the top air inlet (2) and the fan (7).

2. The high-temperature resistant composite flow closed-loop cooling tower as described in claim 1, characterized in that: The top air inlet (2) end face is symmetrically provided with side baffles (11) via a fixed base (10), and the guide plate (13) is rotatably installed between the side baffles (11) via a rotating shaft (12).

3. The high-temperature resistant composite flow closed-loop cooling tower as described in claim 2, characterized in that: One end of the rotating shaft (12) is connected to a power source (16), which is used to drive the guide plate (13) to rotate.

4. The high-temperature resistant composite flow closed-loop cooling tower as described in claim 3, characterized in that: The guide plate (13) has a controllable rotation angle, with a rotation range of 0-90°. When the guide plate (13) rotates to a horizontal position, it just closes the top air inlet (2).

5. A high-temperature resistant composite flow closed-loop cooling tower as described in claim 2, characterized in that: The side baffle (11) can be fan-shaped, triangular or square, and the side baffle (11) is provided with an arc-shaped guide groove (14).

6. The high-temperature resistant composite flow closed-loop cooling tower as described in claim 5, characterized in that: The guide plate (13) has guide posts (15) at both ends, the guide posts (15) pass through the guide groove (14) and can slide along the guide groove (14).

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