A multi-layer natural ventilation large cooling tower

Abstract

The present invention is applicable to the technical field related to cooling towers, and provides a multi-layer natural ventilation large cooling tower, which includes a cooling tower main body and a water pool. An upper inlet and a lower inlet are provided on the cooling tower main body, and the upper inlet and the lower inlet are separated by an umbrella-shaped partition wall. Upper cooling towers and lower cooling towers are respectively arranged at both ends of the umbrella-shaped partition wall. Cooling modules are arranged in both the upper cooling tower and the lower cooling tower. The cooling module includes a packing layer and a spraying system. The packing layer includes one of an upper packing layer and a lower packing layer. The upper packing layer is arranged in the upper cooling tower, and the lower packing layer is arranged in the lower cooling tower. Two groups of spraying systems are provided, and the two groups of spraying systems are respectively used in cooperation with the upper packing layer and the lower packing layer. The structure of the present invention is innovative, can improve the cooling capacity of the natural ventilation large cooling tower, and has the characteristics of high efficiency and energy saving.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling towers, and particularly to a multi-layer natural ventilation large cooling tower. Background Technique

[0002] With the development of the economy, the installed capacity of power stations has been continuously increasing, the cooling water volume of condensers has been increasing, and the capacity of cooling towers for cooling the cooling water of condensers has become larger and larger. Since the cooling capacity of ordinary natural ventilation hyperbolic cooling towers is directly affected by the water spraying area and the cooling air volume, and the increase in the cooling air volume is generally achieved by increasing the height of the cooling tower. Therefore, the capacity increase of existing natural ventilation cooling towers generally can only build higher and larger cooling towers.

[0003] Improving the capacity of cooling towers by building higher and larger cooling towers has the following problems: 1. The construction cost increases; 2. The construction difficulty is higher; 3. The safety of the cooling tower is reduced; 4. The cooling tower forms visual pollution to the building environment; 5. The capacity increase of the cooling tower can only build new towers. Due to the structural limitations of traditional cooling towers, it is impossible to use old towers to greatly increase the capacity.

[0004] Therefore, in view of the above status quo, there is an urgent need to provide a multi-layer natural ventilation large cooling tower to overcome the deficiencies in current practical applications and meet the demand for capacity increase of natural ventilation large cooling towers. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-layer natural ventilation large cooling tower to solve the problems in the above background technique.

[0006] The present invention is realized as follows. A multi-layer natural ventilation large cooling tower includes a cooling tower main body and a water tank. The cooling tower main body is provided with an upper inlet and a lower inlet, and the upper inlet and the lower inlet are separated by an umbrella-shaped partition wall. The two ends of the umbrella-shaped partition wall are respectively provided with an upper cooling tower and a lower cooling tower. Cooling modules are arranged in both the upper cooling tower and the lower cooling tower. The cooling module includes a packing layer and a spraying system. The packing layer includes one of an upper packing layer and a lower packing layer. The upper packing layer is arranged in the upper cooling tower, and the lower packing layer is arranged in the lower cooling tower. There are two groups of spraying systems, and the two groups of spraying systems are respectively used in cooperation with the upper packing layer and the lower packing layer. A water circulation component for achieving high-level water collection is also arranged on the upper cooling tower.

[0007] As a further scheme of the present invention: The umbrella-shaped partition wall is provided with umbrella-shaped partition wall keels, and there are multiple groups of umbrella-shaped partition wall keels.

[0008] As a further solution of the present invention: A plurality of water retaining edges are further provided on the umbrella-shaped partition wall, and a water outlet is provided between two adjacent groups of water retaining edges. The water at the water outlet can directly flow into the pool below, or a water circulation component can be arranged to achieve high-level water collection.

[0009] As a further solution of the present invention: The water circulation component includes a water pump and a pipeline. The pipeline is used to connect the water outlet with the spraying system in the upper cooling tower, and the water pump is arranged on the pipeline.

[0010] As a further solution of the present invention: The upper packing layer is in a circular ring structure.

[0011] As a further solution of the present invention: Both the lower packing layer and the spraying system used in cooperation are in a circular structure, and the lower packing layer is arranged inside the umbrella-shaped partition wall.

[0012] As a further solution of the present invention: At least one group of umbrella-shaped partition walls is provided, and cooling modules are arranged in the separation areas between multiple groups of umbrella-shaped partition walls.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] Through the setting of the upper cooling tower and the lower cooling tower, the water spraying area of the packing is greatly increased, and the water spraying area can be increased without increasing the diameter of the cooling tower. The lower cooling tower introduces new large-area packing, increasing the new ventilation volume, so that the ventilation volume of the multi-layer natural ventilation large cooling tower is greatly improved compared with the traditional cooling tower of the same size, thus increasing the ventilation volume of the cooling tower without increasing the height of the cooling tower. Without increasing the height and diameter of the cooling tower, the water spraying area of the packing and the cooling ventilation volume are greatly improved, achieving the effect of increasing the capacity of the multi-layer natural ventilation large cooling tower. Through the setting of the water circulation component, the effect of high-level water collection of the upper cooling tower can be achieved, reducing the energy consumption of the circulating pump of the upper cooling tower, and achieving the effect of energy conservation and consumption reduction; compared with the prior art, the water spraying area of the packing of the present invention is increased; the ventilation volume is increased; the height of the packing spraying layer of the lower cooling tower is lower, which can reduce the energy consumption of the circulating water pump of the lower cooling tower and reduce the operation cost; the water temperature out of the tower is lower or the spraying cooling water volume is increased after transformation; the capacity increase effect is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a height schematic diagram of the upper inlet and the lower inlet in the present invention.

[0017] Figure 3 It is a structural schematic diagram of the umbrella-shaped partition wall in the present invention.

[0018] Figure 4Schematic diagram of the collection and drainage of the water outlet from the upper filler layer by the umbrella-shaped partition wall in the present invention.

[0019] Figure 5 Schematic diagram of the high-level water collection structure of the upper filler layer in the present invention.

[0020] Figure 6 For Figure 5 Enlarged structure schematic diagram at position B in

[0021] Figure 7 Schematic diagram of the layout shape structure of the upper filler layer and the spraying system in the present invention.

[0022] Figure 8 For Figure 7 Cross-sectional structure schematic diagram at A-A in

[0023] Figure 9 Schematic diagram of the structure of the lower filler layer below the umbrella-shaped partition wall in the present invention.

[0024] Figure 10 Schematic diagram of the structure of the cylindrical partition wall in the present invention.

[0025] Figure 11 Schematic diagram of the structure of the stepped partition wall in the present invention.

[0026] Figure 12 Schematic diagram of the structure of the double-sided partition wall three-layer natural ventilation cooling tower in the present invention.

[0027] In the attached drawings: 1 - Cooling tower main body, 2 - Spraying system, 3 - Upper filler layer, 4 - Upper layer cooling tower, 5 - Umbrella-shaped partition wall, 6 - Lower layer cooling tower, 7 - Lower filler layer, 8 - Upper layer inlet, 9 - Lower layer inlet, 10 - Umbrella-shaped partition wall keel, 11 - Water outlet, 12 - Water retaining edge, 13 - Cylindrical partition wall, 14 - Stepped partition wall, 15 - Water pump, 16 - Water tank, 17 - Pipeline. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The following describes the specific implementation of the present invention in detail with specific embodiments.

[0030] Please refer to Figures 1 - 11, a multi-layer natural draft large cooling tower provided by an embodiment of the present invention, the multi-layer natural draft large cooling tower includes a cooling tower main body 1 and a water tank 16, and an upper inlet 8 and a lower inlet 9 are provided on the cooling tower main body 1, and the upper inlet 8 and the lower inlet 9 are separated by an umbrella-shaped partition wall 5. Upper cooling towers 4 and lower cooling towers 6 are respectively provided at both ends of the umbrella-shaped partition wall 5. Cooling modules are provided in both the upper cooling tower 4 and the lower cooling tower 6. The cooling module includes a packing layer and a spraying system 2. The packing layer includes one of an upper packing layer 3 and a lower packing layer 7. The upper packing layer 3 is arranged in the upper cooling tower 4, and the lower packing layer 7 is arranged in the lower cooling tower 6. Two groups of spraying systems 2 are provided, and the two groups of spraying systems 2 are respectively used in cooperation with the upper packing layer 3 and the lower packing layer 7. A water circulation component for realizing high-level water collection is also provided on the upper cooling tower 4.

[0031] Through the arrangement of the upper cooling tower and the lower cooling tower, the water spraying area of the packing is greatly increased, and the water spraying area can be increased without increasing the diameter of the cooling tower. The lower cooling tower introduces a new large-area packing, increasing the new ventilation volume, so that the ventilation volume of the multi-layer natural draft large cooling tower is greatly improved compared with that of a traditional cooling tower of the same size. Thus, the ventilation volume of the cooling tower is increased without increasing the height of the cooling tower. Without the need to increase the size (diameter and height) of the cooling tower, the water spraying area of the packing and the cooling ventilation volume are greatly improved, achieving the effect of increasing the capacity of the multi-layer natural draft large cooling tower. Through the arrangement of the water circulation component, the effect of high-level water collection in the upper cooling tower can be realized, reducing the energy consumption of the circulating pump in the upper cooling tower, achieving the effect of energy conservation and consumption reduction; such as Figure 10 and Figure 11 , wherein the umbrella-shaped partition wall 5 can also be a cylindrical partition wall 13 or a stepped partition wall 14, and the umbrella-shaped partition wall 5 can also adopt other structures, which are not specifically limited herein; compared with the prior art, the water spraying area of the packing of the present invention is increased; the ventilation volume is increased; the height of the packing spraying layer 7 in the lower cooling tower 6 is lower, which can reduce the energy consumption of the circulating water pump in the lower cooling tower and reduce the operation cost; the water temperature out of the tower after transformation is lower or the spraying cooling water volume is increased; the capacity increase effect is remarkable.

[0032] In an embodiment of the present invention, please refer to Figure 3 and Figure 4 , the wall of the umbrella-shaped partition wall 5 is provided with a plurality of umbrella-shaped partition wall keels 10;

[0033] A plurality of water retaining edges 12 are also provided on the umbrella-shaped partition wall 5, and a water outlet 11 is provided between two adjacent groups of water retaining edges 12.

[0034] In this embodiment, the umbrella-shaped partition wall 5 not only serves to separate the upper cooling tower 4 and the lower cooling tower 6, but also has the functions of collecting the water discharged from the upper packing layer 3 and diverting water. After the water discharged from the upper packing layer 3 flows onto the umbrella-shaped partition wall 5, it will flow along the wall to the surrounding area of the umbrella-shaped partition wall 5. Under the guiding action of the water retaining edge 12 and the water outlet 11, it flows into the bottom pool 16 through the water outlet 11.

[0035] In an embodiment of the present invention, please refer to Figure 5 and Figure 6 , the water circulation assembly includes a water pump 15 and a pipeline 17. The pipeline 17 is used to connect the water outlet 11 with the spraying system 2 in the upper cooling tower 4, and the water pump 15 is arranged on the pipeline 17.

[0036] In this embodiment, the water circulation assembly mainly acts on the upper cooling tower 4. The water collected in the umbrella-shaped partition wall 5 is pressurized by the water pump 15 and then re-fed onto the spraying system 2 in the upper cooling tower 4, which is convenient for reducing the energy consumption of the circulation pump in the spraying system 2, can achieve the effect of energy saving and consumption reduction, and can achieve the effect of high-level water collection.

[0037] In an embodiment of the present invention, please refer to Figures 7 - 9 , the upper packing layer 3 is of an annular structure;

[0038] The lower packing layer 7 and the spraying system 2 used in cooperation with 7 are both of a circular structure, and the lower packing layer 7 is arranged inside the umbrella-shaped partition wall 5.

[0039] In this embodiment, the height of the packing in the lower packing layer 7 is generally kept as low as possible, and it can be arranged below the umbrella-shaped partition wall 5 or slightly higher than the lowest point of the umbrella-shaped partition wall 5, which is beneficial to reducing the energy consumption of the circulation water pump in the spraying system 2 in the lower cooling tower 6, and increasing the packing area of the lower packing layer 7 and enhancing the ventilation and cooling effect. As Figure 9 shown, it is a structural diagram of the lower packing layer 7 and the spraying system 2 arranged below the umbrella-shaped partition wall 5.

[0040] In an embodiment of the present invention, please refer to Figure 12 , at least one group of umbrella-shaped partition walls 5 is provided, and cooling modules are arranged in the separation areas between multiple groups of umbrella-shaped partition walls 5.

[0041] In this embodiment, the umbrella-shaped partition wall 5 can be one or multiple. The cooling tower main body 1 is divided into a multi-layer structure. As Figure 12 shown, it is a structure with two umbrella-shaped partition walls 5 and a three-layer natural ventilation cooling tower, and the installation heights of the cooling modules in the three part areas are different. The umbrella-shaped partition wall 5 is used to divide the inlet area of the cooling tower main body 1 into multiple areas, and cooling modules are respectively arranged in each area to achieve the purpose of increasing the water spraying area and improving the ventilation volume.

[0042] The present invention only removes the ineffective area in the center of the traditional cooling tower's water distribution packing. The high-speed and high-efficiency area of the original tower packing is basically completely retained and serves as the upper packing layer 3 of the multi-layer natural draft large cooling tower. The ventilation volume of the upper cooling tower 4 of this multi-layer natural draft large cooling tower is approximately the same as that of a traditional cooling tower of the same size. The lower cooling tower 6 introduces new packing with a large area, increasing the new ventilation volume. Therefore, the ventilation volume of this multi-layer natural draft large cooling tower is greatly increased compared to a traditional cooling tower of the same size. Thus, on the premise of not increasing the height of the cooling tower, the ventilation volume of the cooling tower is increased. Therefore, for the multi-layer natural draft large cooling tower adopting the structure of the present invention, the water distribution area of the packing and the cooling ventilation volume can be greatly improved, and the effect of increasing the cooling tower capacity can be achieved without increasing the height and size of the cooling tower;

[0043] The present invention can be used for newly built cooling towers and can also be used for the capacity expansion and transformation of old towers. When used for the capacity expansion and transformation of old towers, the original tower structure can be utilized, the transformation cost is low, and the capacity expansion effect is remarkable. It can even achieve a capacity expansion effect that doubles the cooling capacity of the original tower.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-layer natural ventilation large cooling tower, comprising a cooling tower main body and a water pool, and an upper inlet and a lower inlet are arranged on the cooling tower main body, characterized in that, The upper inlet and the lower inlet are separated by an umbrella-shaped partition wall. An upper cooling tower and a lower cooling tower are respectively arranged at both ends of the umbrella-shaped partition wall. Cooling modules are arranged in both the upper cooling tower and the lower cooling tower. The cooling module includes a packing layer and a spraying system. The packing layer includes one of an upper packing layer and a lower packing layer. The upper packing layer is arranged in the upper cooling tower, and the lower packing layer is arranged in the lower cooling tower. Two groups of spraying systems are provided, and the two groups of spraying systems are respectively used in cooperation with the upper packing layer and the lower packing layer. A water circulation component for achieving high-level water collection is also arranged on the upper cooling tower; Multiple groups of water retaining edges are also arranged on the umbrella-shaped partition wall, and a water outlet is arranged between adjacent two groups of water retaining edges; The water circulation component includes a water pump and a pipeline. The pipeline is used to connect the water outlet to the spraying system in the upper cooling tower, and the water pump is arranged on the pipeline; The umbrella-shaped partition wall body is provided with umbrella-shaped partition wall keels, and multiple groups of umbrella-shaped partition wall keels are provided.

2. The multi-layer natural ventilation large cooling tower according to claim 1, characterized in that, The upper packing layer is of an annular structure.

3. The multi-layer natural ventilation large cooling tower according to claim 1, characterized in that, The lower packing layer and the spraying system used in cooperation are both of a circular structure, and the lower packing layer is arranged inside the umbrella-shaped partition wall.

4. The multi-layer natural ventilation large cooling tower according to claim 1, wherein, At least one group of umbrella-shaped partition walls is provided, and cooling modules are arranged in the separation areas between multiple groups of umbrella-shaped partition walls.

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