Winter antifreezing dry-wet composite cooling tower

Abstract

The utility model relates to cooling tower technical field discloses a kind of dry-wet composite cooling towers of winter freeze-proof, including main frame, the side wall of main frame is equipped with thermal insulation wall, dry cooling cavity and wet cooling cavity are equipped in main frame inside, dry cooling cavity is equipped with air cooling heat exchanger, wet cooling cavity is equipped with evaporative heat exchanger, the upper end of wet cooling cavity is equipped with air outlet, the air outlet is equipped with plugging mechanism, the plugging mechanism includes guide rail, guide rod, thermal quilt, roller and pull rope, the guide rail is symmetrically arranged in the two sides of air outlet, guide rod is slidably connected with guide rail, one end of thermal quilt is connected with the end of guide rail and the other end is connected with guide rod, two rollers are rotatably connected at the front end and rear end of guide rail, two pull ropes are provided on guide rod, two pull ropes are respectively wound on two rollers at front end and rear end. The utility model can effectively reduce the heat exchange of radiator and atmosphere, so that the radiator can run safely even in the case of no water leakage, reduce the risk of freeze.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically to a winter-resistant dry-wet composite cooling tower. Background Technology

[0002] Cooling towers are an important component of cold-end systems in industrial production, mainly used for heat dissipation and cooling. The temperature of the water exiting the tower is closely related to the surrounding environmental conditions and the heat load of the thermal system.

[0003] Cooling towers frequently experience severe icing and ice accumulation in low ambient temperatures, especially in frigid regions. This leads to poor cooling efficiency and, in more serious cases, can cause the packing material and beams within the tower to collapse, threatening the safe operation of the generator set. Currently, cooling tower antifreeze measures mainly include installing wind deflectors. Considering the variable operating conditions of generator sets, most power plants use wind deflectors for antifreeze. These deflectors are located on the periphery of the cooling tower, and their size is fixed. However, because ambient temperature and wind direction are constantly changing, the deflectors need to be installed and removed to meet antifreeze requirements. This process is cumbersome, resulting in long adjustment times, significant safety hazards, and poor reliability of antifreeze measures. Furthermore, the large number of deflectors required for antifreeze operation complicates the process and increases the workload for workers.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a winter-resistant dry-wet composite cooling tower that can effectively reduce heat exchange between the radiator and the atmosphere, enabling the radiator to operate safely even without water leakage and reducing the risk of freezing damage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A winter-resistant dry-wet composite cooling tower includes a main frame with insulated walls on its side walls. The main frame contains a dry cooling chamber and a wet cooling chamber spaced apart. An air-cooled heat exchanger is installed in the dry cooling chamber, and an evaporative heat exchanger is installed in the wet cooling chamber. An air outlet is located at the upper end of the wet cooling chamber, and a sealing mechanism is provided on the air outlet. The sealing mechanism includes a guide rail, a guide rod, an insulation blanket, rollers, and pull ropes. The guide rail is symmetrically arranged on both sides of the air outlet. The guide rod is slidably connected to the guide rail. One end of the insulation blanket is connected to the end of the guide rail, and the other end is connected to the guide rod. Two rollers are rotatably connected to the front and rear ends of the guide rail, respectively. Two pull ropes are provided on the guide rod, and the two pull ropes are wound around the two rollers at the front and rear ends, respectively.

[0007] Furthermore, the side wall of the dry cooling chamber is provided with several air inlets, and the air inlets are provided with a first sealing mechanism, which can control the air inlets to open or close.

[0008] Furthermore, the dry cooling chamber is equipped with an inlet pipe, a return pipe, and a guide pipe. The inlet pipe is connected to the liquid inlet end of the air-cooled heat exchanger, the liquid outlet end of the air-cooled heat exchanger is connected to the liquid inlet end of the evaporative heat exchanger through the guide pipe, and the return pipe is connected to the liquid outlet end of the evaporative heat exchanger.

[0009] Furthermore, the wet cooling chamber is equipped with a spraying mechanism located above the evaporative heat exchanger, and a spraying water pool is located at the lower end of the wet cooling chamber.

[0010] Furthermore, the side wall of the dry cooling chamber is provided with a first air guide port and a second air guide port that communicate with the wet cooling chamber. The first air guide port is provided with a second sealing mechanism, which can control the opening or closing of the first air guide port.

[0011] Furthermore, the first and second sealing mechanisms are insulated electric roller shutter doors.

[0012] Furthermore, an air duct is provided at the upper end of the air outlet, and an exhaust fan is provided inside the air duct.

[0013] This invention provides a winter-resistant dry-wet composite cooling tower. It offers the following advantages: The tower uses an insulated electric roller shutter door to seal the air inlet and the first air guide outlet, and an insulation blanket to seal the air outlet. This double sealing measure creates a relatively sealed space inside the cooling tower. Furthermore, the insulated walls on the main frame isolate cold air, reducing heat exchange between the internal heat exchangers and pipes and the atmosphere. This prevents the heat exchangers from freezing even without water leakage, ensuring safe operation of the cooling tower and reducing the risk of freezing damage. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 2 This is a top view of the internal structure of this utility model.

[0016] Figure 3 This is a partial cross-sectional side view of the present invention.

[0017] Figure 4 This is a top view of the external structure of this utility model.

[0018] Figure 5 This is a top view of the sealing mechanism.

[0019] Figure 6 This is a side view of the cross-sectional structure of the sealing mechanism.

[0020] The components include: main frame 1, insulated wall 2, dry cooling chamber 31, air inlet 311, first air guide 312, second air guide 313, wet cooling chamber 32, spray water tank 321, air outlet 322, air-cooled heat exchanger 41, evaporative heat exchanger 42, water inlet pipe 43, water return pipe 44, water guide pipe 45, air duct 5, sealing mechanism 6, guide rail 61, guide rod 62, insulation blanket 63, roller 64, pull rope 65, first sealing mechanism 71, and second sealing mechanism 72. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Please see the appendix Figure 1 -Appendix Figure 6 This utility model provides a winter-resistant dry-wet composite cooling tower, including a main frame 1. The side walls of the main frame 1 are provided with insulation walls 2. The main frame 1 has a dry cooling chamber 31 and a wet cooling chamber 32 arranged at intervals inside, and an insulation wall 2 is also provided between the dry cooling chamber 31 and the wet cooling chamber 32. An air-cooled heat exchanger 41 is provided in the dry cooling chamber 31, and an evaporative heat exchanger 42 is provided in the wet cooling chamber 32. The dry cooling chamber 31 is provided with an inlet pipe 43, a return pipe 44, and a guide pipe 45. The inlet pipe 43 is connected to the liquid inlet end of the air-cooled heat exchanger 41, the liquid outlet end of the air-cooled heat exchanger 41 is connected to the liquid inlet end of the evaporative heat exchanger 42 through the guide pipe 45, and the return pipe 44 is connected to the liquid outlet end of the evaporative heat exchanger 42. The wet cooling chamber 32 is equipped with a spray mechanism (not shown in the figure), which is located above the evaporative heat exchanger 42. A spray water pool 321 is located at the lower end of the wet cooling chamber 32. The spray mechanism is conventional existing technology and will not be described in detail here. It sprays water onto the evaporative heat exchanger 42 to accelerate heat dissipation. High-temperature water is transported to the air-cooled heat exchanger 41 through the inlet pipe 43 for initial heat dissipation, then to the evaporative heat exchanger 42 through the guide pipe 45 for secondary heat dissipation through the spray mechanism, and finally returned to the evaporative heat exchanger through the return pipe 44.

[0023] An air outlet 322 is provided at the upper end of the wet cooling chamber 32, and an air duct 5 is provided at the upper end of the air outlet 322. An exhaust fan is provided inside the air duct 5, which can quickly exhaust the gas in the dry cooling chamber 31 and the wet cooling chamber 32 into the main frame 1. A sealing mechanism 6 is provided at the lower end of the air outlet 322. The sealing mechanism 6 includes a guide rail 61, a guide rod 62, an insulation blanket 63, rollers 64, and pull ropes 65. The guide rail 61 is symmetrically arranged on both sides of the air outlet 322. The guide rod 62 is perpendicular to the guide rail 61. The two ends of the guide rod 62 are slidably connected to the guide rail 61 on both sides. One end of the insulation blanket 63 is fixedly connected to the end of the guide rail 61 and the other end is fixedly connected to the guide rod 62. Two rollers 64 are rotatably connected to the front end and the rear end of the guide rail 61, respectively. Two pull ropes 65 are provided on the guide rod 62, and the two pull ropes 65 are respectively wound around the two rollers 64 at the front end and the rear end. With the above structure, by pulling the two pull ropes 65, the insulation blanket 63 can be opened or closed at the air outlet 322. The structure is simple and easy to operate, which can reduce the workload and work intensity of the operators.

[0024] In this embodiment, the side wall of the dry cooling chamber 31 is provided with a plurality of air inlets 311, and the air inlets 311 are provided with a first sealing mechanism 71, which can control the air inlets 311 to open or close. The side wall of the dry cooling chamber 31 is provided with a first air guide 312 and a second air guide 313 communicating with the wet cooling chamber 32. The first air guide 312 is provided with a second sealing mechanism 72. The first air guide 312 and the second air guide 313 can quickly guide the air in the dry cooling chamber 31 to the wet cooling chamber 32. During the backflow process, the air can also improve the heat dissipation efficiency of the evaporative heat exchanger 42. The second sealing mechanism 72 can control the first air guide 312 to open or close. In the low temperature environment of winter, the air inlets 311 and the first air guide 312 can be sealed by the first sealing mechanism 71 and the second sealing mechanism 72, so that the interior of the main frame 1 is in a relatively sealed state, thereby improving the heat preservation effect. More specifically, the first sealing mechanism 71 and the second sealing mechanism 72 are insulated electric roller shutter doors. Insulated electric roller shutter doors are inexpensive, have no complicated installation procedures, and have a simple structure, making them easy to maintain and replace.

[0025] The working principle of this utility model is as follows: High-temperature water is transported to the air-cooled heat exchanger 41 through the inlet pipe 43 for initial heat dissipation, and then transported to the evaporative heat exchanger 42 through the guide pipe 45 for secondary heat dissipation through the spray mechanism. Finally, the cooled low-temperature water is returned through the return pipe 44. In summer, the first sealing mechanism 71 and the second sealing mechanism 72 open the air inlet 311 and the first air guide 312, and the sealing mechanism 6 opens the air outlet 322, increasing the air intake and air velocity inside the cooling tower, thereby effectively improving the heat dissipation and cooling efficiency of the cooling tower. In winter, the first sealing mechanism 71 and the second sealing mechanism 72 seal the air inlet 311 and the first air guide 312, and then the insulation blanket 63 is pulled by the control rope 65 to seal the air outlet 322, so that the inside of the main frame 1 is in a relatively sealed state, improving the insulation effect and preventing the heat exchanger inside the cooling tower from freezing.

[0026] Compared with the prior art, the advantages of this new technology are that it seals the air inlet 311 and the first air guide 312 with an insulated electric roller shutter door and seals the air outlet 322 with an insulation blanket 63. Through the above double sealing measures, a relatively sealed space is formed inside the cooling tower. In addition, the insulation wall 2 set on the main frame 1 can isolate the cold air, thereby reducing the heat exchange between the internal heat exchanger and pipes and the atmosphere. This ensures that the heat exchanger will not freeze even without water leakage, thus ensuring the safe operation of the cooling tower and reducing the risk of freezing damage.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winter-resistant dry-wet composite cooling tower, characterized in that, The device includes a main frame with insulated walls on its side walls. Inside the main frame are spaced-apart dry and wet cooling chambers. The dry cooling chamber contains an air-cooled heat exchanger, and the wet cooling chamber contains an evaporative heat exchanger. The upper end of the wet cooling chamber has an air outlet, and the air outlet is equipped with a sealing mechanism. The sealing mechanism includes a guide rail, a guide rod, an insulation blanket, rollers, and pull ropes. The guide rail is symmetrically arranged on both sides of the air outlet. The guide rod is slidably connected to the guide rail. One end of the insulation blanket is connected to the end of the guide rail, and the other end is connected to the guide rod. Two rollers are rotatably connected to the front and rear ends of the guide rail, respectively. Two pull ropes are provided on the guide rod, and the two pull ropes are wound around the two rollers at the front and rear ends, respectively.

2. The winter-resistant dry-wet composite cooling tower according to claim 1, characterized in that, The dry cooling chamber has several air inlets on its side wall, and each air inlet has a first sealing mechanism that can control the air inlet to open or close.

3. The winter-resistant dry-wet composite cooling tower as described in claim 2, characterized in that, The dry cooling chamber is equipped with an inlet pipe, a return pipe, and a guide pipe. The inlet pipe is connected to the liquid inlet end of the air-cooled heat exchanger, the liquid outlet end of the air-cooled heat exchanger is connected to the liquid inlet end of the evaporative heat exchanger through the guide pipe, and the return pipe is connected to the liquid outlet end of the evaporative heat exchanger.

4. The winter-resistant dry-wet composite cooling tower as described in claim 3, characterized in that, The wet cooling chamber is equipped with a spray mechanism located above the evaporative heat exchanger, and a spray water pool is located at the lower end of the wet cooling chamber.

5. A winter-resistant dry-wet composite cooling tower as described in claim 4, characterized in that, The dry cooling chamber has a first air guide port and a second air guide port that communicate with the wet cooling chamber on its side wall. The first air guide port is equipped with a second sealing mechanism that can control the opening or closing of the first air guide port.

6. A winter-resistant dry-wet composite cooling tower as described in claim 5, characterized in that, The first and second sealing mechanisms are insulated electric roller shutters.

7. A winter-resistant dry-wet composite cooling tower as described in claim 2, characterized in that, The upper end of the air outlet is equipped with an air duct, and an exhaust fan is installed inside the air duct.

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