Cooling device

Abstract

The utility model discloses a cooling device which comprises a tower body, and a ventilation channel is formed in the side wall of the tower body. A water collecting tank is arranged at the bottom of the tower body, an aeration mechanism is arranged at the bottom of the water collecting tank, and the aeration mechanism comprises an aeration pipe and a plurality of aeration discs arranged on the aeration pipe; and the air inlet end of the aeration pipe is connected with an exhaust pipe of the nitrogen making machine. According to the utility model, the aeration mechanism is additionally arranged at the bottom of the cooling tower, and dry air discharged by the nitrogen making machine is introduced into the water collecting tank, so that the temperature of circulating water is reduced, the phenomenon that the normal operation of water equipment is influenced due to the over-temperature of the circulating water in the cooling tower at high temperature is avoided, meanwhile, waste resources are effectively utilized, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas utilization of pressure swing adsorption nitrogen generators, and in particular to a cooling device. Background Technology

[0002] Pressure swing adsorption (PSA) nitrogen generators are common gas separation devices that utilize carbon molecular sieves as adsorbents. Through pressure adsorption and depressurization desorption, nitrogen is separated from compressed air. During the nitrogen generation process, the exhaust gas discharged from the generator is dry, room-temperature air with a dew point ≤ -40℃. This exhaust gas is oil-free, dust-free, and dry, possessing certain utilization value. However, in current technologies, this exhaust gas is typically directly released into the atmosphere, failing to be effectively utilized and resulting in resource waste.

[0003] A cooling tower is an important piece of equipment used in circulating cooling water systems. It lowers the water temperature and ensures the normal operation of the system by exchanging heat between water and air, releasing heat from the system into the atmosphere. During operation, the circulating water exchanges heat with the air inside the tower, carrying away heat through evaporation and reducing the water temperature. However, in hot and humid summer conditions, the cooling efficiency of the cooling tower is significantly affected, easily leading to overheating of the circulating water and consequently impacting the normal operation of water-using equipment. To improve cooling efficiency, it is usually necessary to increase the power of the cooling fan or the flow rate of the circulating water pump, but this increases energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device that introduces low-temperature air discharged from the nitrogen generator into the water collection tank by adding an aeration mechanism at the bottom of the cooling tower, thereby reducing the temperature of the circulating water and preventing the circulating water from overheating in high-temperature climates, which would affect the normal operation of water-using equipment. At the same time, it enables the effective utilization of waste resources and reduces energy consumption.

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

[0006] A cooling device includes a tower body with ventilation channels on its side walls; a water collection tank is provided at the bottom of the tower body, and an aeration mechanism is arranged at the bottom of the water collection tank. The aeration mechanism includes an aeration pipe and a plurality of aeration discs arranged on the aeration pipe; the air inlet end of the aeration pipe is connected to the exhaust pipe of a nitrogen generator.

[0007] A further solution: The aeration pipe is equipped with a flow valve.

[0008] A further solution: an outlet is provided on one side of the water collection tank.

[0009] A further solution: The upper part of the tower body is equipped with a spraying mechanism.

[0010] A further embodiment: The spraying mechanism includes a spray pipe and nozzles evenly distributed on the spray pipe; a water inlet is provided at the upper part of the tower body, and the water inlet is connected to the water inlet end of the spray pipe.

[0011] A further solution: a water collector is also installed inside the tower above the spraying mechanism.

[0012] A further solution: A fan is also installed inside the tower above the water collector.

[0013] A further solution: A packing layer is installed inside the tower body located between the spraying mechanism and the water collection tank.

[0014] A further option: the ventilation channel is located on the side wall of the tower body between the packing layer and the water collection tank.

[0015] A further option: the aeration pipe is arranged in a spiral shape at the bottom of the water collection tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention achieves energy-saving cooling by introducing the exhaust gas from the nitrogen generator into the water collection tank of the cooling tower, utilizing the low dew point (≤-40℃) of the exhaust gas. Specifically, the aeration mechanism causes the room-temperature dry exhaust gas to form a large number of tiny bubbles in the circulating water, increasing the contact area between the exhaust gas and the circulating water. When these low-temperature exhaust gas bubbles flow through the circulating water, they cause some of the circulating water to vaporize, carrying away a large amount of latent heat of vaporization, thereby further reducing the temperature of the circulating water. This design not only achieves the effective utilization of waste resources but also significantly reduces the energy consumption of the cooling tower. Attached Figure Description

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

[0019] In the diagram: 1-Tower body, 11-Outlet, 12-Inlet, 13-Ventilation channel, 2-Water collection tank, 3-Aeration mechanism, 31-Aeration pipe, 32-Aeration disc, 4-Flow valve, 5-Spraying mechanism, 51-Spray pipe, 52-Spray head, 6-Water collector, 7-Fan, 8-Packing layer. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Please see Figure 1 In this embodiment, a cooling device includes a tower body 1. The bottom of the tower body 1 is provided with a water collection tank 2 for holding circulating water. An aeration mechanism 3 is arranged at the bottom of the water collection tank 2. The aeration mechanism 3 includes an aeration pipe 31 and multiple aeration discs 32 mounted on the aeration pipe 31. The air inlet end of the aeration pipe 31 is connected to the exhaust pipe of a nitrogen generator. The ambient temperature dry waste gas discharged from the nitrogen generator is introduced into the cooling tower through the aeration pipe 31 and then evenly released into the circulating water through micropores on the aeration discs 32, forming a large number of tiny bubbles. Due to the low dew point characteristics of the waste gas, the circulating water vaporizes, carrying away a large amount of latent heat of vaporization, thereby further reducing the temperature of the circulating water. A ventilation channel 13 is also provided on the side wall of the tower body 1. The water vapor formed by vaporization is discharged outside the cooling tower along with the waste gas through the ventilation channel 13, realizing heat exchange between the inside and outside of the tower.

[0023] Furthermore, a flow valve 4 is installed on the aeration pipe 31. This flow valve 4 has two outlets: a main outlet and a bypass outlet. The main outlet connects to the aeration pipe 31, and the bypass outlet connects to the atmosphere. The opening and closing of the main outlet and bypass outlet are determined by the flow rate of the waste gas entering the flow valve 4: when the waste gas flow rate is low (below the set value), the main outlet closes, the bypass outlet opens, and the waste gas is completely discharged to the atmosphere through the bypass outlet to ensure that the pressure swing adsorption nitrogen generator regeneration tower completes desorption and regeneration; when the waste gas flow rate is high (above the set value), the bypass outlet closes, the main outlet opens, and the waste gas enters the aeration pipe 31 through the main outlet. Both the main and bypass outlets of the flow valve 4 have a check valve function to prevent the low-temperature circulating water in the collection tank 2 from flowing back into the nitrogen generator due to the lack of waste gas discharge during the pressure equalization stage of the pressure swing adsorption nitrogen generator.

[0024] Furthermore, an outlet 11 is provided on one side of the water collection tank 2. The circulating water stored in the water collection tank 2 is discharged out of the tower through the outlet 11.

[0025] Furthermore, a spraying mechanism 5 is provided on the upper part of the tower body 1. Circulating water is evenly sprayed into the cooling tower through the spraying mechanism 5 to maximize the contact area between water and air, thereby improving heat exchange efficiency and reducing water temperature.

[0026] Specifically, the spraying mechanism 5 includes a spray pipe 51 and nozzles 52 evenly distributed on the spray pipe 51; a water inlet 12 is provided on the upper part of the tower body 1, and the water inlet 12 is connected to the water inlet end of the spray pipe 51.

[0027] Furthermore, a water collector 6 is also installed inside the tower body 1 above the spraying mechanism 5. This water collector 6 can intercept liquid water droplets in the air, preventing them from being carried out of the cooling tower. At the same time, the water collector 6 can also recover some of the water vapor generated by the vaporization of exhaust gas, further improving the operating efficiency and water resource utilization rate of the cooling tower.

[0028] Furthermore, a fan 7 is also installed inside the tower body 1 located above the water collector 6. This fan 7 not only has a cooling function, but also works in conjunction with the aeration mechanism. The fan 7 increases airflow, enhances the mixing of nitrogen generator exhaust gas and air inside the cooling tower, and further improves the heat exchange efficiency inside the tower.

[0029] Furthermore, a packing layer 8 is provided inside the tower body 1 located between the spray mechanism 5 and the water collection tank 2. This packing layer 8 provides additional contact area for heat exchange between the exhaust gas and the circulating water, allowing the low-temperature characteristics of the exhaust gas to be more fully transferred to the circulating water, further enhancing the cooling effect of the cooling tower.

[0030] Furthermore, multiple ventilation channels 13 are provided on the side wall of the tower body 1 located between the packing layer 8 and the water collection tank 2. These ventilation channels 13 introduce cold air from outside the tower into the tower, and mix it with the exhaust gas inside the tower and the water vapor generated by the vaporization of the exhaust gas, further promoting heat exchange.

[0031] Furthermore, the aeration pipe 31 is arranged in a spiral shape at the bottom of the water collection tank 2.

[0032] In other embodiments, the aeration pipes 31 can also be arranged in a crisscross pattern at the bottom of the water collection tank 2, and then connected to the nitrogen generator by a main pipe. The aeration discs 32 are evenly arranged on each branch pipe, so that the introduced waste gas and cooling water come into more uniform contact.

[0033] In operation, high-temperature circulating water enters the spraying mechanism 5 through the circulating water inlet 12 and is evenly sprayed onto the packing layer 8, flowing downwards. Under the action of the cooling fan 7, air enters the cooling tower through the ventilation channels 13 on both sides of the cooling tower and flows upwards. In the packing layer 8, the circulating water flows from top to bottom, and the air flows from bottom to top. During the contact process, the two exchange heat fully. On the one hand, heat is transferred from the high-temperature circulating water to the air, and the temperature of the circulating water decreases. On the other hand, some of the circulating water evaporates into water vapor, carrying away a large amount of latent heat of vaporization, further reducing the temperature of the circulating water. After leaving the packing layer 8, the high-temperature circulating water cools down to become low-temperature circulating water and flows downwards, stored in the water collection tank 2, and discharged from the circulating water outlet 11. The air temperature and humidity increase, and it flows upwards. After being intercepted and collected by the water collector 6, the liquid water droplets are discharged into the atmosphere by the cooling fan 7.

[0034] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0035] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. Cooling device, characterized in that Including tower body (1), the tower body (1) side wall is equipped with ventilation passage (13);The tower body (1) bottom is equipped with water collecting tank (2), the water collecting tank (2) bottom is equipped with aeration mechanism (3), the aeration mechanism (3) includes aeration pipe (31), multiple aeration discs (32) are equipped on aeration pipe (31);The aeration pipe (31) intake end is connected with nitrogen generator exhaust pipe.

2. Cooling device according to claim 1, characterized in that The aeration pipe (31) is equipped with flow valve (4).

3. Cooling device according to claim 1, characterized in that The water collecting tank (2) one side is equipped with water outlet (11).

4. The cooling device of claim 1, wherein The upper portion of the tower body (1) is equipped with a spraying mechanism (5).

5. Cooling device according to claim 4, characterized in that The spraying mechanism (5) includes a spray pipe (51) and a plurality of spray heads (52) evenly arranged on the spray pipe (51).

6. Cooling device according to claim 4, characterized in that The upper portion of the tower body (1) is equipped with a water inlet (12), and the water inlet (12) is connected with the water inlet end of the spray pipe (51).

7. Cooling device according to claim 6, characterized in that The tower body (1) located above the spraying mechanism (5) is further equipped with a water collector (6).

8. The cooling device of claim 4, wherein, The tower body (1) located above the water collector (6) is further equipped with a fan (7).

9. The cooling tower according to claim 8, characterized in that The tower body (1) located between the spraying mechanism (5) and the water collecting tank (2) is further equipped with a filler layer (8).

10. The cooling device of claim 1, wherein, The ventilation passage (13) is arranged in the side wall of the tower body (1) between the filler layer (8) and the water collecting tank (2). The aeration pipe (31) is arranged in the form of a spiral disc at the bottom of the water collecting tank (2).

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