Circulating water cooling tower

Abstract

The utility model provides a circulating water cooling tower, which relates to the field of water cooling towers and comprises a tower body and an air duct located at the top of the tower body, the top of the tower body is connected with a water inlet pipe, the bottom of the tower body is provided with a circulating water pool and connected with a water outlet pipe, and a packing layer is arranged in a tower cavity between the water inlet pipe and the water outlet pipe. The fan assembly comprises a direct-current motor, a hub and fan blades, the direct-current motor is installed on a base, the base is fixedly connected with the inner wall of the air duct, and the direct-current motor is connected with a controller through an electric signal; the hub is fixedly connected to the output end of the direct-current motor and comprises an upper disc and a lower disc, the upper disc and the lower disc are vertically symmetrical and detachably connected, and pressing blocks used for fixing the fan blades are arranged on the opposite end faces, close to the outer edges, of the upper disc and the lower disc; the circulating water cooling effect can be improved, the power loss is reduced, the operation stability is improved, the maintenance period is prolonged, the operation cost is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a circulating water cooling tower. Background Art

[0002] Industrial water mainly includes boiler water, process water, cleaning water, circulating cooling water, sewage, etc. Among them, circulating cooling water accounts for more than 90% of industrial water consumption.

[0003] In factories, circulating cooling water is mainly used to condense steam, cool products or equipment. The cooling effect of circulating cooling water directly affects production efficiency, product yield and quality, and may even cause production accidents. For example, the utility model patent with publication number CN211261844U discloses a circulating water cooling system, which improves the uniformity of the distribution of circulating water in the tower cavity by filling corrugated packing in the tower cavity of the cooling tower, prolongs the residence time of circulating water in the tower, thereby promoting more sufficient heat exchange between circulating water and air and improving heat exchange efficiency.

[0004] In addition, the operational stability and energy consumption of the cooling tower are also the focus of attention of those skilled in the art. For example, the fan blades in the above-mentioned prior art are connected to the driving device placed outside the wind tube through the corresponding transmission components, and the driving device indirectly drives the fan blades to rotate through the transmission components. On the one hand, this structure has the problem of large power loss, resulting in high production energy consumption and high operating costs. On the other hand, the connection structure between the fan blade and the driving device also has the problem of poor operational stability, which brings unfavorable factors to safe and stable production. Utility Model Content

[0005] The utility model provides a circulating water cooling tower for the above-mentioned problems existing in the prior art, which has a reasonable design, improves the cooling effect of circulating water, reduces power loss, improves operation stability, extends maintenance cycle, reduces operation cost, and prolongs service life.

[0006] The utility model solves the above technical problems with the following technical solutions: a circulating water cooling tower, comprising a tower body and a wind tube located at the top of the tower body, the top of the tower body is connected to a water inlet pipe, the bottom of the tower body is provided with a circulating water pool and connected to a water outlet pipe, a packing layer is provided in the tower cavity between the water inlet pipe and the water outlet pipe, and the top air outlet of the wind tube is a bell-mouth structure, and a fan assembly is provided inside the wind tube;

[0007] The fan assembly includes a DC motor, a hub and fan blades, the DC motor is mounted on a base, the base is fixedly connected to the inner wall of the wind tube, and the DC motor is connected to a controller via an electrical signal;

[0008] The hub is fixedly connected to the output end of the DC motor. The hub includes an upper plate and a lower plate. The upper plate and the lower plate are symmetrical in vertical direction and detachably connected. The opposite end surfaces of the upper plate and the lower plate are provided with clamping blocks for fixing the fan blades near their outer edges. The surface of the clamping block is provided with a groove that matches the inner end of the fan blade.

[0009] Furthermore, the surfaces of the upper plate and the lower plate are both provided with a plurality of through holes penetrating from top to bottom.

[0010] Furthermore, the upper plate, the lower plate and the pressing block are all made of aluminum alloy.

[0011] Furthermore, the fan blades are made of aluminum alloy.

[0012] Furthermore, the bottom end surface of the fan blade is inclined from the middle to the outer end, so that the thickness of the fan blade decreases from the middle to the end.

[0013] Furthermore, a vertical spoiler is provided at the outer end of the fan blade.

[0014] Furthermore, the outer end surface of the spoiler is similar in shape to the inner wall of the wind tube.

[0015] Furthermore, the spoiler and the fan surface of the fan blade are perpendicular to each other.

[0016] Furthermore, a temperature sensor is provided in the circulating water pool, and the temperature sensor is electrically connected to the controller of the DC motor.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model reduces transmission components, reduces power loss, and increases operational stability and safety by providing a DC motor built into the air duct and a wheel hub and fan blades directly connected to the output end of the DC motor.

[0019] 2. The utility model further reduces power loss through the lightweight design of the wheel hub and fan blades, while also increasing the gas flux in the wind tube, further improving the cooling effect of the circulating water.

[0020] 3. The utility model further improves the circulating air volume and the gas flow rate in the air duct through the design of the fan blade shape, reduces the air flow resistance, and further reduces the power loss. Finally, it takes into account the operation stability, energy saving, cooling equipment efficiency, extends the maintenance cycle, reduces the operation cost, and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the circulating water cooling tower of the utility model (the fan assembly is a simplified diagram);

[0022] Figure 2 It is a schematic diagram of the connection structure between the hub and the fan blades of the utility model;

[0023] Figure 3 It is a schematic diagram of the top view of the hub and fan blades in the wind tube;

[0024] Figure 4 It is a schematic diagram of the top view of the hub and fan blades in the fan tube (excluding the upper plate);

[0025] Figure 5 It is the electrical connection diagram between the controller and the temperature sensor;

[0026] In the figure: 1. tower body, 2. air duct, 3. water inlet pipe, 4. circulating water pool, 41. temperature sensor, 5. water outlet pipe, 61. DC motor, 62. wheel hub, 620. through hole, 621. upper plate, 622. lower plate, 623. pressing block, 624. slot, 63. fan blade, 631. spoiler, 7. base, 8. controller. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] As shown in the accompanying drawings, the circulating water cooling tower of this embodiment includes a tower body 1 and a wind tube 2 located at the top of the tower body, the top of the tower body is connected to a water inlet pipe 3, a circulating water pool 4 is arranged at the bottom of the tower body 1 and is connected to a water outlet pipe 5, a packing layer 9 is arranged in the tower cavity between the water inlet pipe 3 and the water outlet pipe 5, and it is characterized in that the top air outlet of the wind tube 2 is a bell-mouth structure, and a fan assembly is arranged inside the wind tube 2;

[0029] The fan assembly includes a DC motor 61, a hub 62 and a fan blade 63. The DC motor 61 is mounted on a base 7, and the base 7 is fixedly connected to the inner wall of the wind tube 2. The DC motor 61 is connected to a controller 8 through an electrical signal to control the speed of the DC motor 61.

[0030] The hub 62 is fixedly connected to the output end of the DC motor 61. The hub 62 includes an upper plate 621 and a lower plate 622. The upper plate 621 and the lower plate 622 are symmetrical up and down, and the two are detachably connected. The opposite end surfaces of the upper plate 621 and the lower plate 622 are provided with a clamping block 623 for fixing the fan blade near their outer edges, and the surface of the clamping block 623 is provided with a groove 624 adapted to the inner end of the fan blade 63.

[0031] In this solution, the heat of the circulating water is discharged into the atmosphere through the base 7, the DC motor 61, the hub 62, the blades 63, and the wind tube 2, while taking away the heat of the DC motor 61. On the one hand, the DC motor 61 placed in the wind tube 2 is directly connected to the hub 62, and the rotation of the blades 63 is directly controlled by the controller 8, which reduces the use of transmission parts and reduces power loss; on the other hand, combined with the connection structure of the hub 62 and the blades 63, the stability of the blade movement is greatly increased, and the safety of production operation is improved.

[0032] In a preferred embodiment of the utility model, the upper plate 621, the lower plate 622, the pressing block 623, and the fan blade 63 are all made of aluminum alloy, and the surfaces of the upper plate 621 and the lower plate 622 are provided with a plurality of through holes 620 that penetrate from top to bottom. By adopting the aluminum alloy material and the through holes 620 provided in the upper and lower plates, the rotating part of the fan assembly is lightweight and directly connected to the output end of the DC motor, further reducing the power loss of the motor, and the gas is dispersed from bottom to top through the through holes 620, further improving the cooling effect of the circulating water.

[0033] In a preferred embodiment of the utility model, the bottom end surface of the fan blade 63 is inclined from the middle to the outer end, so that the thickness of the fan blade 63 decreases from the middle to the end. Its special shape design can increase the circulating air volume, and can increase the gas flow rate in the wind tube 2, reduce the air flow resistance, and reduce the power loss of the DC motor 61 in conjunction with the bell mouth structure of the wind tube 2.

[0034] In a preferred embodiment of the utility model, a vertical spoiler 631 is provided at the outer end of the fan blade 63, the spoiler 631 is perpendicular to the fan surface of the fan blade 63, and the outer end surface of the spoiler is similar in shape to the inner wall of the wind tube. The provision of the spoiler 631 can improve the spoiler effect at the inner wall of the wind tube 2, further increase the gas flow, reduce the power loss of the DC motor 61, and improve the cooling effect of the circulating water.

[0035] The circulating water pool 4 is provided with a temperature sensor 41, which is electrically connected to the controller 8 of the DC motor 61. The operating load of the fan assembly can be automatically adjusted according to the monitored water temperature, thereby adjusting the water temperature. The water temperature control accuracy is high, the cooling equipment efficiency matches the water temperature, and power consumption is avoided, the operating cost is reduced, and the automation degree is high.

Claims

1. A circulating water cooling tower, comprising a tower body and a wind tube located at the top of the tower body, the top of the tower body is connected to a water inlet pipe, the bottom of the tower body is provided with a circulating water pool and connected to a water outlet pipe, a packing layer is provided in the tower cavity between the water inlet pipe and the water outlet pipe, characterized in that: The top air outlet of the air duct is a bell-mouth structure, and a fan assembly is arranged inside the air duct; The fan assembly includes a DC motor, a hub and fan blades, the DC motor is mounted on a base, the base is fixedly connected to the inner wall of the wind tube, and the DC motor is connected to a controller via an electrical signal; The hub is fixedly connected to the output end of the DC motor. The hub includes an upper plate and a lower plate. The upper plate and the lower plate are symmetrical up and down, and the two are detachably connected. The opposite end surfaces of the upper plate and the lower plate are provided with clamping blocks for fixing the fan blades near their outer edges, and the surface of the clamping block is provided with a groove that matches the inner end of the fan blade.

2. The circulating water cooling tower according to claim 1, characterized in that: The surfaces of the upper plate and the lower plate are both provided with a plurality of through holes penetrating vertically.

3. The circulating water cooling tower according to claim 2, characterized in that: The upper plate, the lower plate and the pressing block are all made of aluminum alloy.

4. The circulating water cooling tower according to claim 1, characterized in that: The fan blades are made of aluminum alloy.

5. The circulating water cooling tower according to claim 1, characterized in that: The bottom end surface of the fan blade is inclined from the middle to the outer end, so that the thickness of the fan blade decreases from the middle to the end.

6. The circulating water cooling tower according to claim 1 or 5, characterized in that: The outer end of the fan blade is provided with a vertical spoiler.

7. The circulating water cooling tower according to claim 6, characterized in that: The outer end surface of the spoiler is similar in shape to the inner wall of the wind tube.

8. The circulating water cooling tower according to claim 6, characterized in that: The spoiler and the fan surface of the fan blade are perpendicular to each other.

9. The circulating water cooling tower according to claim 1, characterized in that: A temperature sensor is arranged in the circulating water pool, and the temperature sensor is electrically connected to the controller of the DC motor.

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