A combined cooling tower

Abstract

This utility model relates to the field of cooling tower technology and discloses a combined cooling tower, including a main frame with insulated side walls. The main frame contains a dry cooling chamber and a wet cooling chamber. The dry cooling chamber includes a first chamber and a second chamber. An air-cooled heat exchanger is housed in the first chamber, and air inlets are located on the side walls of both chambers. A first sealing mechanism for closing the air inlets is provided on the air inlets. The wet cooling chamber includes a third chamber and a fourth chamber. An air outlet is located at the upper end of the third chamber, and an evaporative heat exchanger connected to the air-cooled heat exchanger is located inside the third chamber. Compared with existing technologies, this utility model adopts a combined dry and wet cooling system, effectively improving heat exchange efficiency and providing antifreeze protection to ensure safe operation of the cooling tower and reduce costs.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically a combined cooling tower. Background Technology

[0002] Cooling towers are a crucial component of cold-end systems in industrial production, primarily used for heat dissipation and cooling. The outlet water temperature is closely related to the surrounding environmental conditions and the heat load of the thermal system. Traditional cooling towers typically operate in a single mode, mainly including purely wet and purely dry types, resulting in relatively low heat dissipation efficiency. Furthermore, in winter, when ambient temperatures are low and the system experiences intermittent periods of no or low heat load, the radiators in the cooling tower are at risk of freezing. The conventional method used to be to drain water from individual sectors, but frequent filling and draining of sectors is detrimental to the safe operation of the cooling tower and is also uneconomical.

[0003] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a combined cooling tower that employs a dry-wet combined cooling method, effectively improving heat exchange efficiency and providing antifreeze functionality to ensure safe operation of the cooling tower and reduce costs.

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

[0006] A combined cooling tower includes a main frame with insulated walls on its side walls. The main frame has a dry cooling chamber and a wet cooling chamber inside. The dry cooling chamber includes a first chamber and a second chamber. An air-cooled heat exchanger is installed in the first chamber. Air inlets are provided on the side walls of the first and second chambers. A first sealing mechanism for sealing the air inlets is provided on the air inlets. The wet cooling chamber includes a third chamber and a fourth chamber. An air outlet is provided at the upper end of the third chamber. An evaporative heat exchanger communicating with the air-cooled heat exchanger is installed inside the third chamber.

[0007] Furthermore, a first air duct is provided between the first cavity and the second cavity, and a second sealing mechanism is provided on the first air duct for sealing the first air duct.

[0008] Furthermore, the first and second sealing mechanisms are insulated electric roller shutter doors.

[0009] Furthermore, the first and second sealing mechanisms are thermal insulation partitions, and the sides of the thermal insulation partitions are rotatably connected to the main frame.

[0010] Furthermore, the second cavity is provided with an inlet pipe and a return pipe. The inlet pipe is connected to the inlet end of the air-cooled heat exchanger, and the return pipe is connected to the outlet end of the evaporative heat exchanger. The outlet end of the air-cooled heat exchanger is connected to the inlet end of the evaporative heat exchanger through a water guide pipe.

[0011] Furthermore, a support frame is provided between the third and fourth chambers, and an evaporative heat exchanger is installed on the support frame. The evaporative heat exchanger has through holes. A spray mechanism is provided at the upper end of the third chamber, and a spray water pool is provided at the lower end of the fourth chamber.

[0012] Furthermore, a second air vent is provided between the second cavity and the fourth cavity.

[0013] This utility model provides a combined cooling tower with the following advantages: The new design offers high cooling efficiency, effectively reducing operating energy consumption and thus lowering cooling costs. Furthermore, in low-temperature winter environments, this design can operate in a purely dry mode, preventing icing. Additionally, when the cooling tower operates under intermittent low heat loads, the first and second sealing mechanisms can seal the air inlet and the first air guide, creating a relatively sealed space inside the cooling tower. This reduces heat exchange with the air, achieving an insulation effect. Even with a small system heat load, the circulating water will not freeze, ensuring safe operation of the cooling tower and reducing costs. 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 present invention.

[0018] The components include: main frame 1, air inlet 11, air outlet 12, air duct 13, support frame 14, through hole 15, spray water tank 16, air guide 17, insulated wall 2, first cavity 31, second cavity 32, third cavity 33, fourth cavity 34, first sealing mechanism 4, air-cooled heat exchanger 51, evaporative heat exchanger 52, water inlet pipe 61, water return pipe 62, water guide pipe 63, and second sealing mechanism 7. Detailed Implementation

[0019] 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.

[0020] Please see the appendix Figure 1 - Appendix Figure 4 This utility model provides a combined cooling tower, including a main frame 1. The side walls of the main frame 1 are provided with insulated walls 2, which can be filled with insulation material to achieve thermal insulation. The main frame 1 is internally divided into a dry cooling chamber and a wet cooling chamber. The dry cooling chamber includes a first chamber 31 and a second chamber 32 arranged vertically. An air-cooled heat exchanger 51 is installed in the first chamber 31. Air inlets 11 are located at the lower ends of the side walls of the first chamber 31 and the second chamber 32, and a first sealing mechanism 4 is provided on the air inlets 11 for sealing them. The wet cooling chamber includes a third chamber 33 and a fourth chamber 34. An air outlet 12 is located at the upper end of the third chamber 33, and a wind duct 13 is located at the upper end of the air outlet 12. An exhaust fan is installed inside the wind duct 13, which can quickly exhaust the air from the dry cooling chamber and the wet cooling chamber into the main frame 1, thereby accelerating heat dissipation efficiency. The third chamber 33 houses an evaporative heat exchanger 52 connected to the air-cooled heat exchanger 51. More specifically, the second chamber 32 contains an inlet pipe 61 and a return pipe 62. The inlet pipe 61 connects to the inlet of the air-cooled heat exchanger 51, and the return pipe 62 connects to the outlet of the evaporative heat exchanger 52. The outlet of the air-cooled heat exchanger 51 and the inlet of the evaporative heat exchanger 52 are connected via a guide pipe 63. High-temperature water is transported to the air-cooled heat exchanger 51 for initial heat dissipation through the inlet pipe 61, then to the evaporative heat exchanger 52 for secondary heat dissipation through the guide pipe 63, and finally returned to the air-cooled heat exchanger through the return pipe 62. This achieves rapid cooling of the high-temperature water.

[0021] In this embodiment, a first air vent 13 is provided between the first cavity 31 and the second cavity 32. A second sealing mechanism 7 is provided on the first air vent 13 for sealing it. Cold air enters the first cavity 31 through the air inlet 11 to cool the hot water in the air-cooled heat exchanger 51. The air that has undergone heat exchange then enters the third cavity 33 through the first air vent 13 and is discharged through the air outlet 12. This accelerates the airflow rate within the first cavity 31, further improving the heat dissipation efficiency of this invention.

[0022] In the first embodiment of this utility model, the first sealing mechanism 4 and the second sealing mechanism 7 are insulated electric roller shutter doors. Using an insulated electric roller shutter door can seal the air inlet 11 and the first air guide 13, and it is inexpensive, simple in structure, and easy to maintain.

[0023] In a second embodiment of this utility model, the first sealing mechanism 4 and the second sealing mechanism 7 are thermal insulation partitions, the sides of which are rotatably connected to the main frame 1. By rotating the thermal insulation partitions, the air inlet 11 and the first air guide 13 can be sealed, which is not only simple to operate and has a concise structure, but also more convenient to install.

[0024] In this embodiment, a support frame 14 is provided between the third cavity 33 and the fourth cavity 34. The evaporative heat exchanger 52 is mounted on the support frame 14 and has through holes 15. A spray mechanism (not shown) is provided at the upper end of the third cavity 33. The spray mechanism is conventional prior art and will not be described in detail here. A spray pool 16 is provided at the lower end of the fourth cavity 34. Through the spray mechanism, the hot water in the evaporative heat exchanger 52 can be quickly sprayed to dissipate heat, further improving the heat dissipation efficiency. Furthermore, a second air guide vent 17 is provided between the second cavity 32 and the fourth cavity 34. Air inside the second cavity 32 can quickly enter the fourth cavity 34, and then enter the third cavity 33 through the through holes 15, and finally be discharged through the air outlet 12. During this process, the air can also come into contact with the evaporative heat exchanger, further improving the heat dissipation effect.

[0025] The working principle of this invention is as follows: High-temperature water is transported through the inlet pipe 61 to the air-cooled heat exchanger 51 for initial heat dissipation, then through the guide pipe 63 to the evaporative heat exchanger 52, where it undergoes secondary heat dissipation through a spray mechanism. Finally, the cooled low-temperature water is returned through the return pipe 62. This achieves rapid cooling of the high-temperature water. In low-temperature winter environments, when the cooling tower operates under intermittent low heat load, the first sealing mechanism 4 and the second sealing mechanism 7 can seal the air inlet 11 and the first air guide 13, creating a relatively sealed space inside the cooling tower. This reduces heat exchange with the air, achieving a heat preservation effect. With only a small heat load on the system, the circulating water will not freeze, thus ensuring the safe operation of the cooling tower and reducing costs.

[0026] 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 combined cooling tower, characterized in that, The system includes a main frame, with insulated walls on the side walls. Inside the main frame are a dry cooling chamber and a wet cooling chamber. The dry cooling chamber includes a first chamber and a second chamber. An air-cooled heat exchanger is installed in the first chamber. Air inlets are provided on the side walls of the first and second chambers. A first sealing mechanism for sealing the air inlets is provided on the air inlets. The wet cooling chamber includes a third chamber and a fourth chamber. An air outlet is provided at the upper end of the third chamber. An evaporative heat exchanger connected to the air-cooled heat exchanger is installed inside the third chamber.

2. A combined cooling tower according to claim 1, characterized in that, A first air duct is provided between the first cavity and the second cavity, and a second sealing mechanism is provided on the first air duct for sealing the first air duct.

3. A combined cooling tower as described in claim 2, characterized in that, The first and second sealing mechanisms are insulated electric roller shutter doors.

4. A combined cooling tower as described in claim 2, characterized in that, The first and second sealing mechanisms are thermal insulation partitions, and the sides of the thermal insulation partitions are rotatably connected to the main frame.

5. A combined cooling tower as described in claim 2, characterized in that, The second cavity is equipped with an inlet pipe and a return pipe. The inlet pipe is connected to the inlet end of the air-cooled heat exchanger, and the return pipe is connected to the outlet end of the evaporative heat exchanger. The outlet end of the air-cooled heat exchanger is connected to the inlet end of the evaporative heat exchanger through a water guide pipe.

6. A combined cooling tower as described in claim 5, characterized in that, A support frame is provided between the third and fourth chambers. An evaporative heat exchanger is mounted on the support frame and has through holes. A spray mechanism is provided at the upper end of the third chamber and a spray pool is provided at the lower end of the fourth chamber.

7. A combined cooling tower as described in claim 2, characterized in that, A second air vent is provided between the second chamber and the fourth chamber.

8. A combined cooling tower as described in claim 2, characterized in that, An air duct is provided at the upper end of the air outlet, and an exhaust fan is provided inside the air duct.

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