Spray recovery device for dry-type air cooling

Abstract

The utility model belongs to the technical field of spraying devices, and particularly relates to a spraying recovery device for dry type air cooling. The dry-type air cooling spraying recovery device comprises a dry-type air cooler body spraying pipe, the dry-type air cooler body comprises a dry-type air cooling frame, a heat exchange pipe and a fan are sequentially arranged in the dry-type air cooling frame, one end of the dry-type air cooling frame is provided with the spraying pipe, and the other end of the dry-type air cooling frame is provided with the fan. An accommodating device is arranged at the other end; the diameter defined by the spraying pipes corresponds to the diameter of the fan; the containing device is connected with a water tank, the water tank is connected with a demineralized water pipeline through a water pump, the demineralized water pipeline is connected with a spraying pipe, and a nozzle is arranged on the spraying pipe. According to the spray recovery device for dry-type air cooling, the circular spray pipe and the containing device are arranged on the dry-type air cooler body, circulating demineralized water cooling is formed, the cooling effect is good, safety and stability are achieved, energy is saved, and consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of spray devices, and in particular relates to a dry air-cooling spray recovery device. Background Art

[0002] Dry air coolers are often used in petroleum refining and chemical plants to cool down process media. After the expansion and transformation of petroleum refining and chemical plants, the cooling capacity of dry air coolers is limited. When the temperature is high in summer, the cooling effect cannot be achieved under full load, resulting in overheating of the process media. The processing volume of the plant has to be reduced, affecting the production capacity of the plant.

[0003] Dry air coolers are used in petroleum refining and chemical plants. The dry air cooling fan rotates to make the surrounding air flow continuously through the finned heat exchange tubes, so that the ambient air and the high-temperature process fluid medium in the finned tube bundle undergo heat exchange, taking away the heat and cooling the process medium passing through the dry air cooling finned tubes. However, dry air coolers also have disadvantages such as limited cooling capacity and being greatly affected by changes in ambient air temperature. When the ambient air temperature rises in summer, the temperature of the air used for cooling is also high, resulting in a decrease in cooling capacity, a poor cooling effect of the dry air cooler, and a high temperature of the process medium, which forces the plant processing volume to be reduced, affecting the plant production capacity.

[0004] After the capacity expansion and renovation of the olefin workshop, the on-site liquefied gas air cooling has not been expanded and renovated. As a result, when the liquefied gas air cooling fan is running at full load in summer, it still cannot meet the cooling requirements for the process medium, and the process medium temperature is still overheated. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects of the prior art and provide a spray recovery device for dry air cooling. A circular spray pipe is arranged on the dry air cooler body and a receiving device is arranged below to form a circulating desalted water cooling, which has good cooling effect, is safe and stable, and saves energy and reduces consumption.

[0006] The utility model discloses a spray recovery device for dry air cooling, comprising a dry air cooler body spray pipe. The dry air cooler body comprises a dry air cooling frame, and the interior of the dry air cooling frame is sequentially provided with heat exchange pipes and a fan, one end of the dry air cooling frame is provided with a spray pipe, and the other end is provided with a receiving device; the diameter surrounded by the spray pipe corresponds to the diameter of the fan; the receiving device is connected to a water tank, the water tank is connected to a desalted water pipeline through a water pump, the desalted water pipeline is connected to the spray pipe, and a nozzle is provided on the spray pipe.

[0007] Preferably, the shape formed by the spray pipes is circular.

[0008] Preferably, the heat exchange tube is a finned heat exchange tube.

[0009] Preferably, the length and width of the receiving device correspond to the length and width of the dry air cooling frame.

[0010] Preferably, the receiving device is surrounded by enclosures, and the height of the enclosures is 20-25 cm. The main function of the receiving device is to receive part of the spraying water.

[0011] Preferably, the receiving device is provided with a sewage pipe, which is connected to the water tank.

[0012] Preferably, the pipeline connecting the water tank and the desalted water pipeline is a circulation pipeline, a water pump is arranged on the circulation pipeline, and a circulation valve is arranged at the outlet of the water pump.

[0013] Preferably, a desalted water valve is provided on the desalted water pipeline, and a branch valve is provided on the desalted water pipeline before entering the spray pipe.

[0014] Preferably, the receiving device is located above the air cooling platform.

[0015] The utility model of the spray recovery device for dry air cooling is provided with a circular spray pipe on the upper part of the dry air cooler body when working. The diameter of the circular spray pipe is equal to the diameter of the fan and the position is installed perpendicular to the fan. Because when the fan rotates, the periphery of the fan blades is acted upon by torque, and the wind force generated is the largest. On the contrary, the wind force generated at the innermost shaft of the fan is the smallest. When the spray water in the circular spray pipe forms water mist through the nozzle and falls on the fin heat exchange tube, the droplets of the spray water mist will diffuse to the periphery of the fin heat exchange tube under the action of gravity and the wind force of the fan, so that the spray water mist can be evenly diffused to the surrounding fin heat exchange tubes. The droplets contact the fin heat exchange tubes, quickly vaporize and absorb a large amount of heat, so that the process medium in the tube bundle of the fin heat exchange tube is quickly cooled down, the cooling effect of the dry air cooler is improved, and the purpose of cooling is achieved; at this time, there are still some spray water droplets falling into the receiving device under the dry air cooler, which is located above the air cooling platform patterned plate. The surrounding guard height of the receiving device is 20cm, and the length and width are respectively the same as the dry The sizes of the dry air cooling frames are equal to each other to prevent water mist from spreading to the outside of the receiving device, causing water resource waste and increased load on the sewage treatment plant; the spray water collected by the receiving device enters the ground water tank through the drain pipe, and the bottom of the water tank is intermittently opened by the water pump to send the accumulated desalted water to the spray pipe above the dry air cooler for recycling; a circulation valve is installed on the outlet pipeline of the water pump, and a desalted water valve is installed on the external desalted water pipeline to control the use of desalted water respectively. At the same time, a branch valve is also set at the front end of the circular spray pipe above the fan, which can be cut off and put into use to control the post-cooling temperature of the dry air cooler to meet the safe and stable production requirements of the device under full load.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The dry air-cooling spray recovery device of the utility model controls the stable tower top temperature and pressure by adding a circular temporary spray pipe.

[0018] (2) The utility model provides a spray recovery device for dry air cooling, and at the same time, adds a receiving device under the dry air cooler to collect excess spray water. The collected spray water enters a water tank, and the spray water in the water tank is returned to the dry air cooler by intermittently starting a water pump, thereby achieving the purpose of cooling the process medium. At the same time, it avoids the risk of cracking of the high-temperature pipeline weld at the bottom of the air cooling platform or leakage of the sealing surface, and the problem of wasting a lot of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the dry air cooling spray recovery device of the utility model.

[0020] Figure 2 It is a schematic diagram of a top view of a spray recovery device for dry air cooling of the utility model.

[0021] In the figure: 1. Dry air cooling frame; 2. Receiving device; 3. Fan; 4. Heat exchange tube; 5. Spray pipe; 6. Nozzle; 7. Branch valve; 8. Desalted water pipeline; 9. Desalted water valve; 10. Circulation valve; 11. Circulation pipeline; 12. Water pump; 13. Water tank; 14. Enclosure; 15. Drain pipe; 16. Dry air cooler body, 17. Air cooling platform. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific embodiments.

[0023] like Figure 1 and Figure 2 As shown, the spray recovery device for dry air cooling comprises a dry air cooler body 16 and a spray pipe 5. The dry air cooler body 16 comprises a dry air cooling frame 1. The interior of the dry air cooling frame 1 is provided with heat exchange tubes 4 and a fan 3 in sequence. A spray pipe 5 is provided at one end of the dry air cooling frame 1, and a receiving device 2 is provided at the other end. The diameter surrounded by the spray pipe 5 corresponds to the diameter of the fan 3. The receiving device 2 is connected to a water tank 13. The water tank 13 is connected to a desalted water pipeline 8 through a water pump 12. The desalted water pipeline 8 is connected to the spray pipe 5. A nozzle 6 is provided on the spray pipe 5.

[0024] The shape formed by the spray pipe 5 is circular.

[0025] The heat exchange tube 4 is a finned heat exchange tube.

[0026] The length and width of the receiving device 2 correspond to the length and width of the dry air cooling frame 1 .

[0027] The receiving device 2 is surrounded by enclosures 14, and the height A of the enclosures 14 is 20 cm. The main function of the receiving device 2 is to receive part of the spraying water.

[0028] The receiving device 2 is provided with a sewage pipe 15 , which is connected to the water tank 13 .

[0029] The pipeline connecting the water tank 13 and the demineralized water pipeline 8 is a circulation pipeline 11 , a water pump 12 is arranged on the circulation pipeline 11 , and a circulation valve 10 is arranged at the outlet of the water pump 12 .

[0030] The desalted water pipeline 8 is provided with a desalted water valve 9 , and the desalted water pipeline 8 before entering the spray pipe 5 is provided with a branch valve 7 .

[0031] The receiving device 2 is located above the air cooling platform 17 .

[0032] The spray recovery device for dry air cooling of the utility model, when working, is provided with a circular spray pipe 5 on the upper part of the dry air cooler body 16, the diameter of the circular spray pipe 5 is equal to the diameter of the fan 3, and the position is installed perpendicular to the fan 3. Because when the fan 3 rotates, the periphery of the blades of the fan 3 is acted upon by torque, and the wind force generated is the largest, and conversely, the wind force generated at the innermost shaft of the fan is the smallest. When the spray water in the circular spray pipe 5 forms water mist through the nozzle 6 and falls on the fin heat exchange tube 4, the droplets of the spray water mist will diffuse to the periphery of the fin heat exchange tube 4 under the action of gravity and the wind force of the fan 3, so that the spray water mist can be evenly diffused to the surrounding fin heat exchange tube 4, and the droplets contact the fin heat exchange tube 4, quickly vaporize and absorb a large amount of heat, so that the process medium in the tube bundle of the fin heat exchange tube 4 is quickly cooled, the cooling effect of the dry air cooler is improved, and the purpose of cooling is achieved; at this time, there are still some spray water droplets falling into the receiving device 2 below the dry air cooler, the receiving device 2 is located above the patterned plate of the air cooling platform 17, and the surrounding baffles 14 of the receiving device 2 are 20cm high, and the length and width are respectively the same as the dry air cooling The sizes of the frames 1 are equal to prevent the water mist from diffusing to the outside of the receiving device 2, causing water resource waste and increased load on the sewage treatment plant; the spray water collected by the receiving device 2 enters the ground water tank 13 through the sewage pipe 15, and the bottom of the water tank 13 is intermittently opened by the water pump 12 to send the accumulated desalted water to the spray pipe 5 above the dry air cooler for recycling; a circulation valve 10 is installed on the outlet pipeline of the water pump 12, and a desalted water valve is installed at the external desalted water pipeline 8 to control the use of desalted water respectively. At the same time, a branch valve 7 is also provided at the front end of the circular spray pipe 5 above the fan 3, and the branch can be cut off and put into use to control the post-cooling temperature of the dry air cooler to meet the safe and stable production requirements of the device under full load.

[0033] The utility model meets the cooling requirements of the device under full-load operation conditions; can eliminate the risk of cracking of the high-temperature pipeline welds at the bottom of the air-cooling platform or leakage of the sealing surface; reduces costs and expenses, can eliminate the problem of water waste in dry air coolers, and reduce the processing load of sewage treatment plants.

[0034] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A dry air cooling spray recovery device, characterized in that: The dry air cooler comprises a dry air cooler body (16) and a spray pipe (5). The dry air cooler body (16) comprises a dry air cooling frame (1). The dry air cooling frame (1) is provided with a heat exchange pipe (4) and a fan (3) in sequence. The dry air cooling frame (1) is provided with a spray pipe (5) at one end and a receiving device (2) at the other end. The diameter formed by the spray pipe (5) corresponds to the diameter of the fan (3). The receiving device (2) is connected to a water tank (13). The water tank (13) is connected to a desalted water pipeline (8) via a water pump (12). The desalted water pipeline (8) is connected to the spray pipe (5). The spray pipe (5) is provided with a nozzle (6).

2. The dry air cooling spray recovery device according to claim 1 is characterized in that: The shape formed by the spray pipe (5) is circular.

3. The dry air cooling spray recovery device according to claim 1 is characterized in that: The heat exchange tube (4) is a finned heat exchange tube.

4. The dry air cooling spray recovery device according to claim 1 is characterized in that: The length and width of the receiving device (2) correspond to the length and width of the dry air cooling frame (1).

5. The dry air cooling spray recovery device according to claim 4 is characterized in that: The receiving device (2) is provided with enclosures (14) around it, and the height of the enclosures (14) is 20-25 cm.

6. The dry air cooling spray recovery device according to claim 4 is characterized in that: The receiving device (2) is provided with a sewage pipe (15), and the sewage pipe (15) is connected to the water tank (13).

7. The dry air cooling spray recovery device according to claim 1 is characterized in that: The pipeline connecting the water tank (13) and the desalted water pipeline (8) is a circulation pipeline (11), a water pump (12) is arranged on the circulation pipeline (11), and a circulation valve (10) is arranged at the outlet of the water pump (12).

8. The dry air cooling spray recovery device according to claim 1 is characterized in that: The desalted water pipeline (8) is provided with a desalted water valve (9), and a branch valve (7) is provided on the desalted water pipeline (8) before entering the spray pipe (5).

9. The dry air cooling spray recovery device according to claim 1 is characterized in that: The receiving device (2) is located above the air cooling platform (17).

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