High efficiency open cross flow cooling tower

Abstract

The utility model belongs to the cooling tower technical field provides a kind of efficient open type cross-flow cooling tower, including tower shell, air inlet louver, air duct, driving motor, water distributor, filler, heat exchange coil pipe, water replenishing tank, water collecting basin and the structure of other structures.The utility model sets up heat exchange coil pipe and is set between two sides water distributor and filler, not only can the circulating hot water that enters first carry out efficient heat exchange, improve the overall cooling efficiency, and, through condensation effect can capture water drop in humid hot air, reduce water loss, reduce water replenishing consumption, simultaneously, the outlet pipe of heat exchange medium is designed into the coil pipe section that extends into water replenishing tank, can utilize the low temperature supplementary water to the high-temperature medium in the outlet pipe effectively pre-cooling, reduce the heat load of external condensing agent device, reach energy-saving purpose.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, specifically, it relates to a high-efficiency open crossflow cooling tower. Background Technology

[0002] An open crossflow cooling tower is an industrial cooling device whose core function is to reduce water temperature through heat exchange between water and air. Its characteristics include horizontal airflow and vertical water flow, with the two in contact in orthogonal directions (crossflow). Current open crossflow cooling towers typically include components such as the tower body, packing, water distribution system, fan, and water collection tray. However, they suffer from the following main shortcomings: First, their heat exchange efficiency is relatively low and has room for improvement, especially under high temperature and high humidity conditions. Second, the water supply system is usually independent of the tower body or has a simple structure, failing to effectively utilize its cooling potential when the supply water temperature is low, resulting in low energy efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency open crossflow cooling tower to solve the technical problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency open crossflow cooling tower includes a tower shell, a frame disposed within the tower shell, a tower body inspection door disposed on the tower shell, and air inlet louvers disposed on both sides of the tower shell; a wind duct is disposed at the top of the tower shell, a fan and a drive motor for driving the fan are disposed inside the wind duct, water distributors are disposed on both sides of the upper end of the tower shell, and circulating water inlets are disposed on the water distributors; packing is disposed on both sides inside the tower shell below the water distributors, and heat exchange coils are disposed between the packing between the water distributors, the heat exchange coils are connected to inlet pipes and outlet pipes; a water supply tank is disposed in the middle of the lower end of the tower shell, and water collection basins are formed on both sides of the water supply tank; a circulating water outlet pipe connected to the water collection basins is disposed on the lower side of the tower shell, the outlet pipe extends downward into the water supply tank and exits from its side, with the pipe opening extending to the bottom outer side of the tower shell; the inlet pipe extends downward into the bottom outer side of the tower shell.

[0005] Preferably, the outlet pipe extending into the water supply tank has a coil structure and forms a coil section, and the coil section is arranged horizontally.

[0006] Preferably, the coil section of the outlet pipe inside the water supply tank is below the liquid level.

[0007] Preferably, an openable and closable inspection door is provided at the upper end of the water replenishment tank.

[0008] Preferably, the water replenishment tank is connected to an external water supply pipe, and a float valve is installed inside the tank. An overflow port is provided on the upper side of the water replenishment tank.

[0009] Preferably, a drain outlet is also provided on the lower side of the water replenishment tank.

[0010] Preferably, a number of supports are provided at the bottom of the tower shell.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention sets up a heat exchange coil and places it between the water distributors and packing on both sides. This not only allows for efficient heat exchange of the incoming circulating hot water and improves the overall cooling efficiency, but also allows for the capture of water droplets in the humid air through the condensation effect, reducing water loss and reducing water consumption. At the same time, the outlet pipe of the heat exchange medium is designed as a coil section that extends into the water supply tank. The lower temperature of the water supply can be used to effectively pre-cool the high temperature medium in the outlet pipe, reducing the heat load of the external condenser device and achieving energy saving.

[0012] (2) This utility model integrates the water replenishment tank in the middle of the lower part of the tower body, and the two sides of the tank naturally form water collection basins, making the tower body structure more compact, reducing external pipe connections and floor space, and integrating water replenishment, water collection and pre-cooling functions into one, with a compact structure and reasonable layout. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram illustrating the principle of this utility model.

[0015] The component names corresponding to the attached diagrams are as follows: 1-Tower shell, 2-Frame, 3-Tower inspection door, 4-Air duct, 5-Fan, 6-Drive motor, 7-Water distributor, 8-Circulating water inlet, 9-Packing, 10-Heat exchange coil, 11-Make-up water tank, 12-Water collection basin, 13-Air inlet louver, 14-Outlet pipe, 15-Inlet pipe, 16-Overflow port, 17-Circulating water outlet pipe, 18-Box inspection door, 19-Drain outlet, 20-Support. Detailed Implementation

[0016] To enable those skilled in the art to have a clearer understanding of this utility model, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model and facilitate understanding. The technical solutions provided by this utility model are not limited to those provided in the following embodiments, nor should they limit the scope of protection of this utility model.

[0017] Example like Figures 1-2 As shown, this embodiment provides a high-efficiency open crossflow cooling tower. The main body of the cooling tower is the tower shell 1, which is internally supported and reinforced by a frame 2. Several supports 20 are welded to the bottom of the tower shell 1 to support the entire tower body and ensure that there is a certain space between the bottom and the ground, which is conducive to air circulation and equipment corrosion protection. A tower body inspection door 3 is installed on the side of the tower shell 1, which facilitates personnel to enter the tower for maintenance of components such as the packing 9 and the water distributor 7. Air inlet louvers 13 are installed on both side walls of the tower shell 1 to guide air to flow horizontally into the tower and prevent water droplets from splashing out.

[0018] A duct 4 is installed on the top of the tower shell 1. Inside the duct 4 is a fan 5 driven by a drive motor 6. Furthermore, the drive motor 6 can also be equipped with a reducer. When the fan 5 is working, the air drawn in from the air inlet louvers 13 flows laterally across the packing area, and finally the hot and humid air is discharged from the duct 4, forming a stable airflow inside the tower.

[0019] Water distributors 7 are installed on both sides of the upper end of the tower shell 1. Each water distributor 7 has a circulating water inlet 8. The water distributor 7 is a mature, existing product. Example structure: The water distributor 7 includes a water distribution pipe and several water distribution nozzles mounted on the pipe. The circulating water inlet 8 is located on the water distribution pipe. Circulating water is evenly sprayed onto the packing material at low pressure through the water distributor, preventing clogging. The circulating hot water to be cooled enters the water distributor 7 through the circulating water inlet 8 and is evenly sprayed onto the packing material 9 below it. The packing material 9 is made of rigid PVC honeycomb material. The function of the packing material 9 is to increase the contact area and contact time between water and air, promoting evaporative heat dissipation.

[0020] In this embodiment, a heat exchange coil 10 is provided in the central area between the water distributors 7 and the packing 9 on both sides. The inlet pipe 15 and the outlet pipe 14 of the heat exchange coil 10 both extend downward and are connected to an external circulating refrigerant supply device to provide heat exchange medium into the heat exchange coil 10. The heat exchange medium (such as refrigerant) enters from the inlet pipe 14 located at the bottom of the tower, flows through the heat exchange coil 10, and then flows out from the outlet pipe 15. After the circulating water enters the cooling tower, it is first cooled at the heat exchange coil, thereby improving the overall cooling effect of the equipment. At the same time, based on the condensation effect, water droplets in the humid air can be captured, reducing water loss and reducing water replenishment consumption.

[0021] A water supply tank 11 is located at the lower center of the tower shell 1. The two sides of the water supply tank 11 are connected to the interior of the tower body, naturally forming two water collection basins 12. Cooling water dripping from the packing 9 collects in the water collection basins 12 and is pumped to the outside of the cooling tower through the circulating water outlet pipe 17, completing the circulation. The water supply tank 11 is connected to tap water or other water sources via an external water supply pipe (not shown in the figure). It is equipped with a conventional float valve (not shown in the figure) to automatically replenish water lost due to evaporation and drift, maintaining a stable water level in the water collection basins 12. An overflow port 16 is located at the upper end of the side wall of the water supply tank 11 to prevent excessively high water levels; a drain port 19 is located at the lower side for periodically removing deposited dirt.

[0022] In this embodiment, the outlet pipe 14 extends downward into the water supply tank 11. The pipe body within the tank is bent into a coil structure, forming a horizontally arranged coil section, which is completely submerged below the liquid surface in the water supply tank 11. The heat exchange medium, after heat exchange through the heat exchange coil, first flows through the coil section in the water supply tank 11. The cooler supply water exchanges heat with the heat exchange medium in the coil section, effectively pre-cooling the heat exchange medium. This design fully utilizes the cooling capacity of the low-temperature supply water, reduces the heat load of the heat exchange operation, and significantly improves the energy efficiency of the entire system.

[0023] In this embodiment, a closable access door 18 is specially provided at the top of the water tank 11. When the float valve inside the water tank malfunctions or needs cleaning and inspection, maintenance personnel can directly open the access door 18 to operate without emptying the water tank or disassembling complex pipelines, which is extremely convenient. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-efficiency open-type crossflow cooling tower, characterized in that: The tower shell (1) includes a frame (2) inside the tower shell (1), a tower inspection door (3) on the tower shell (1), and air inlet louvers (13) on both sides of the tower shell (1). A duct (4) is provided on the top of the tower shell (1), a fan (5) and a drive motor (6) for driving the fan (5) are provided inside the duct (4). Water distributors (7) are provided on both sides of the upper end of the tower shell (1), and circulating water inlets (8) are provided on the water distributors (7). Packing material (9) is provided on both sides inside the tower shell (1) below the water distributors (7). A heat exchange coil (10) is provided between the packing (9) of the device (7). The heat exchange coil (10) is connected to an inlet pipe (15) and an outlet pipe (14). A water supply tank (11) is provided at the middle of the lower end of the tower shell (1). The two sides of the water supply tank (11) form a water collection basin (12). A circulating water outlet pipe (17) connected to the water collection basin (12) is provided on the side of the lower end of the tower shell (1). The outlet pipe (14) extends downward into the water supply tank (11) and passes through its side, with the pipe opening extending to the bottom outside of the tower shell (1). The inlet pipe (15) extends downward into the bottom outside of the tower shell (1).

2. The high-efficiency open crossflow cooling tower according to claim 1, characterized in that: The outlet pipe (14) extends into the water supply tank (11) in a coiled structure and forms a coiled section, and the coiled section is arranged horizontally.

3. The high-efficiency open crossflow cooling tower according to claim 2, characterized in that: The coil section of the outlet pipe (14) in the water supply tank (11) is below the liquid level.

4. The high-efficiency open crossflow cooling tower according to claim 3, characterized in that: An openable and closable inspection door (18) is provided at the upper end of the water supply tank (11).

5. The high-efficiency open crossflow cooling tower according to claim 4, characterized in that: The water supply tank (11) is connected to an external water supply pipe and is equipped with a float water supply valve inside. An overflow port (16) is provided on the upper side of the water supply tank (11).

6. The high-efficiency open crossflow cooling tower according to claim 5, characterized in that: A drain outlet (19) is also provided on the lower side of the water supply tank (11).

7. The high-efficiency open crossflow cooling tower according to any one of claims 1 to 6, characterized in that: Several supports (20) are provided at the bottom of the tower shell (1).

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