Wind power enhancing device for inner area of natural ventilation cooling tower

Abstract

The utility model discloses a natural ventilation cooling tower inner area wind power enhancing device which comprises a tower drum, the bottom end of the tower drum is fixedly connected with an inclined supporting column, the inclined supporting column is fixedly connected with a plurality of flow guide ring pieces, the tower drum comprises a drum wall, a wind-shield wall is built on the outer side of the middle position of the drum wall, and the wind-shield wall is arranged on the outer side of the middle position of the drum wall. A plurality of air inlet pipes distributed in an array mode are arranged on the tower drum, the air inlet position of each air inlet pipe is lower than the air outlet position of the air inlet pipe, and the air inlet pipes are arranged below the wind-shield wall. According to the utility model, by arranging the flow guide ring piece, crosswind blown from the air inlet of the natural ventilation cooling tower enters the tower under the flow guide action of the flow guide ring piece, so that the crosswind is prevented from disturbing the air velocity of the air inlet of the natural ventilation cooling tower, the air inlet of the natural ventilation cooling tower is more uniform and stable, and the air velocity in the tower is increased; and the cooling efficiency of the cooling tower is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a wind force enhancement device for an inner zone of a natural ventilation cooling tower. Background Art

[0002] A cooling tower is a device used to remove waste heat from industrial production or refrigeration processes.

[0003] Its working principle is usually to use the heat exchange between water and air flow to generate steam, and the steam evaporates and takes away the heat to achieve the purpose of heat dissipation and cooling.

[0004] There are many types of cooling towers, the most common ones are natural ventilation cooling towers and mechanical ventilation cooling towers. Natural ventilation cooling towers rely on natural wind power for ventilation and heat dissipation, while mechanical ventilation cooling towers use forced ventilation through equipment such as fans. Cooling towers are widely used in many fields such as electricity, chemical industry, steel, air conditioning, etc. It is of great significance to improve industrial production efficiency, ensure the normal operation of equipment, and save energy and reduce emissions.

[0005] The representative of natural ventilation cooling tower is hyperbolic natural ventilation tower, which is a large thin shell structure used for circulating cooling water in thermal power plants, nuclear power plants, etc. Its main structure includes water collection tank, tower tube and water sprinkling device, etc. Water collection tank: It is mostly a circular pool about 2 meters deep under the ground.

[0006] Tower: The ventilator consists of three parts: the lower ring beam, the cylinder wall, and the rigid ring at the top of the tower. The lower ring beam is located at the lower end of the ventilator shell, and is used to transfer the deadweight of the ventilator and other loads it bears to the inclined pillars, and then to the foundation. The cylinder wall is the main part of the cooling tower ventilator. It is a tall thin shell structure that mainly bears wind loads. It is very sensitive to wind. The shape and wall thickness of its shell need to be optimized and checked for stability. The rigid ring at the top of the tower is located at the top of the shell, which can enhance the rigidity and stability of the top of the shell. The inclined pillar is the supporting structure of the ventilator, which mainly bears deadweight, wind load and temperature stress, and is generally designed according to a double parabola. The foundation mainly bears all the loads transmitted by the inclined pillars. According to the structural form, it is divided into annular foundations (including inverted "T" type foundations) and separate foundations. The settlement of the foundation has a greater impact on the stress distribution of the shell.

[0007] Water sprinkling device: located below the first section of the cylinder wall (lower ring beam), usually a water sprinkling frame, mostly made of materials such as PE or PVC.

[0008] In the prior art, water comes into contact with air, and the air takes away the heat of the water. The density of hot air is less than that of cold air, causing the hot air to rise rapidly, thereby reducing the pressure in the tower and allowing cold air to enter from the lower end of the tower, thereby accelerating the flow rate of the airflow in the tower. However, this flow inlet method will be affected by the lateral airflow, resulting in uneven airflow entering the cooling tower, thereby reducing the cooling efficiency of the cooling tower. Utility Model Content

[0009] The utility model aims to provide a wind force enhancement device for the inner area of ​​a natural ventilation cooling tower to solve the above-mentioned deficiencies in the prior art.

[0010] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a natural ventilation cooling tower inner zone wind enhancement device, comprising a tower, the bottom end of the tower is fixedly connected to an inclined support, a plurality of guide rings are fixedly connected to the inclined support, the tower comprises a cylinder wall, a windbreak wall is built on the outer side of the middle position of the cylinder wall, a plurality of air inlet pipes distributed in an array are arranged on the tower, the air inlet position height of the air inlet pipe is lower than the air outlet position height, and the air inlet pipe is arranged below the windbreak wall.

[0011] Furthermore, the inclination angles of the plurality of guide ring segments relative to the horizontal plane gradually increase from the lower layer to the upper layer.

[0012] Furthermore, the windbreak wall is in the shape of an inverted frustum.

[0013] Furthermore, a second dehumidifier is provided in the tower, and the second dehumidifier is located on the upper side of the air inlet pipe.

[0014] Furthermore, the tower comprises a cylinder wall, the top of which is fixedly connected to a tower top rigid ring, the bottom of which is fixedly connected to a lower ring beam, and the lower ring beam is fixedly connected to an inclined support column.

[0015] Furthermore, a packing layer is arranged inside the cylinder wall, a water spraying device is arranged above the packing layer, a first water remover is arranged above the water spraying device, and a water collecting tank is arranged directly below the packing layer.

[0016] In the above technical solution, the utility model provides a natural ventilation cooling tower inner area wind enhancement device with the beneficial effects:

[0017] 1. The utility model provides a guide ring, so that the side wind blowing from the air inlet of the natural ventilation cooling tower enters the tower tube under the guiding effect of the guide ring, thereby preventing the side wind from disturbing the air flow rate at the air inlet of the natural ventilation cooling tower, making the air inlet of the natural ventilation cooling tower more uniform and stable, improving the air flow rate in the tower tube, and thus improving the cooling efficiency of the cooling tower.

[0018] 2. By setting up several air inlet pipes in the middle of the tower, when the cold air flow at high altitude hits the side wall of the cylinder, it flows along the side wall of the cylinder and enters the cylinder wall from the air inlet pipe under the obstruction of the windbreak wall, so that the hot air flow moving upward from the bottom of the tower cavity is mixed, the flow rate of the air flow is accelerated, and at the same time, the cold and hot air flows meet and condense into water droplets, further reducing the water loss rate.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0023] Figure 2 A cross-sectional view provided for an embodiment of the utility model;

[0024] Figure 3 This is a diagram of the installation position of the guide ring provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Tower; 11. Rigid ring at the top of the tower; 12. Cylinder wall; 121. Air inlet pipe; 13. Lower ring beam; 2. Windbreak wall; 3. Inclined support column; 4. Guide ring plate; 5. Water collecting tank; 6. Filling layer; 7. Water spraying device; 8. First dewatering device; 9. Second dewatering device. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0028] Please refer to 1-3, a natural ventilation cooling tower inner area wind enhancement device includes a tower 1, the bottom end of the tower 1 is fixedly connected to an inclined support 3, and a plurality of guide rings 4 are fixedly connected to the inclined support 3. The tower 1 includes a cylinder wall 12, and a windbreak wall 2 is built on the outer side of the middle position of the cylinder wall 12. The tower 1 is provided with a plurality of air inlet pipes 121 distributed in an array, and the air inlet position height of the air inlet pipe 121 is lower than the air outlet position height, so that the air inlet pipe 121 is inclined upward relative to the horizontal plane, so that the airflow direction from the outside into the tower 1 through the air inlet pipe 121 is inclined upward, and the air inlet pipe 121 is arranged below the windbreak wall 2.

[0029] Specifically, by arranging a plurality of air inlet pipes 121 in the middle section of the tower 1, when the cold air flow at high altitude hits the side wall of the cylinder wall 12, it flows along the side wall of the cylinder wall 12, and enters the cylinder wall 12 from the air inlet pipes 121 under the obstruction of the wind shield wall 2, so that the hot air flow moving upward from the bottom of the inner cavity of the tower 1 is mixed, the flow rate of the air flow is accelerated, and at the same time, the cold and hot air flows meet and condense into water droplets, further reducing the water loss rate.

[0030] The utility model provides a guide ring 4 so that the side wind blowing from the air inlet of the natural ventilation cooling tower enters the tower 1 under the guiding effect of the guide ring 4, thereby avoiding the side wind disturbing the air flow rate at the air inlet of the natural ventilation cooling tower, making the air inlet of the natural ventilation cooling tower more uniform and stable, improving the air flow rate in the tower 1, and thus improving the cooling efficiency of the cooling tower.

[0031] Furthermore, the inclination angles of the plurality of guide ring segments 4 relative to the horizontal plane gradually increase from the lower layer to the upper layer.

[0032] Specifically, the inclination angle of the guide ring plate 4 relative to the horizontal plane gradually increases from the lower layer to the upper layer, which makes the airflow entering the tower 1 an upward flow.

[0033] Furthermore, the windbreak wall 2 is in the shape of an inverted truncated cone.

[0034] Specifically, refer to Figure 1 and Figure 2 The windbreak wall 2 is built in the middle of the tower 1, that is, the thinnest position of the tower 1. The lower side of the windbreak wall 2 is rounded. As the airflow hits the side of the tower 1, it flows along the side of the tower 1 and hits the windbreak wall 2, and then enters the tower 1 from the air inlet pipe 121.

[0035] Furthermore, a second water eliminator 9 is provided in the tower 1 , and the second water eliminator 9 is located on the upper side of the air inlet pipe 121 .

[0036] Specifically, refer to Figure 2The cold airflow entering the tower 1 from the air inlet pipe 121 is mixed with the hot airflow rising in the tower 1 and then passes through the second water remover 9, so that the moisture in the airflow is intercepted, further reducing the moisture loss rate.

[0037] Furthermore, the tower 1 includes a cylinder wall 12, the top of which is fixedly connected to a tower top rigid ring 11, the bottom of which is fixedly connected to a lower ring beam 13, the lower ring beam 13 is fixedly connected to the inclined support 3, a packing layer 6 is arranged in the cylinder wall 12, a water sprinkling device 7 is arranged above the packing layer 6, a first water remover 8 is arranged above the water sprinkling device 7, a water collecting tank 5 is arranged directly below the packing layer 6, the packing layer 6 is fixed to directly below the water sprinkling device 7 through a support frame arranged in the tower 1, the water sprinkling device 7 is fixedly installed in the tower 1 and is connected to an external condensation water pipe, and the first water remover 8 is fixedly installed in the tower 1 for the purpose of intercepting moisture in the hot air.

[0038] Specifically, the water spraying device 7 sprays hot water onto the packing layer 6. When the water flows along the inner wall of the packing layer 6 into the water collecting pool 5, the passing air takes away the heat. The density of hot air is less than that of cold air, which makes the hot air move upward. The cold air around the bottom of the tower 1 is replenished into the tower 1, so that a steady stream of cold air takes away the heat of the condensed water.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wind amplification device for the inner area of ​​a natural ventilation cooling tower, comprising a tower (1), characterized in that: The bottom end of the tower (1) is fixedly connected to an inclined support column (3), and a plurality of guide ring sheets (4) are fixedly connected to the inclined support column (3). The tower (1) comprises a cylinder wall (12), and a windbreak wall (2) is built on the outer side of the middle position of the cylinder wall (12). The tower (1) is provided with a plurality of air inlet pipes (121) distributed in an array, and the height of the air inlet position of the air inlet pipe (121) is lower than the height of the air outlet position, and the air inlet pipe (121) is arranged below the windbreak wall (2).

2. A natural ventilation cooling tower inner zone wind amplification device according to claim 1, characterized in that: The inclination angles of the plurality of guide ring pieces (4) relative to the horizontal plane gradually increase from the lower layer to the upper layer.

3. The natural ventilation cooling tower inner zone wind amplification device according to claim 1, characterized in that: The wind shield wall (2) is in the shape of an inverted frustum.

4. The natural ventilation cooling tower inner zone wind amplification device according to claim 1, characterized in that: A second dehumidifier (9) is provided in the tower (1), and the second dehumidifier (9) is located on the upper side of the air inlet pipe (121).

5. The wind force enhancement device for the inner area of ​​a natural ventilation cooling tower according to claim 1, characterized in that: The tower (1) comprises a cylinder wall (12), the top of the cylinder wall (12) is fixedly connected to a tower top rigid ring (11), the bottom of the cylinder wall (12) is fixedly connected to a lower ring beam (13), and the lower ring beam (13) is fixedly connected to an inclined support column (3).

6. A natural ventilation cooling tower inner zone wind amplification device according to claim 5, characterized in that: A packing layer (6) is arranged inside the cylinder wall (12), a water spraying device (7) is arranged above the packing layer (6), a first water remover (8) is arranged above the water spraying device (7), and a water collecting tank (5) is arranged directly below the packing layer (6).

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