Cooling tower waste heat recovery device

Abstract

The utility model is suitable for the field of cooling towers, and provides a cooling tower waste heat recovery device which comprises a heat recovery space arranged at the position of an exhaust port of a cooling tower, and a heat recovery component is installed in the heat recovery space. A plurality of movable baffles are mounted at an opening of the heat recovery space; in the first state, a plugging surface is formed among the plurality of movable baffles to plug the opening of the heat recovery space; in the second state, gaps for airflow to pass through are formed between the adjacent movable baffles, the airflow can enter the heat recovery space through the gaps, and therefore the structure of the exhaust port can be adjusted through the movable baffles according to the heat dissipation state, and the circulation state of the airflow can be adaptively changed.

Description

Technical Field

[0001] The utility model relates to the field of cooling towers, in particular to a cooling tower waste heat recovery device. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It uses the flow of water and air to exchange heat and generate steam. The steam evaporates and takes away the heat to achieve evaporative heat dissipation, convection heat transfer and radiation heat transfer. It dissipates the waste heat generated in industry or refrigeration and air conditioning to lower the water temperature through evaporative heat dissipation to ensure the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower.

[0003] In an open cooling tower, the cooled process liquid enters an open space, where a delivery pipe sprays the liquid into the cooling space through a nozzle. A circulating fan generates a cooling airflow (airflow is transmitted from the bottom to the top). During this transmission process, the process liquid exchanges heat with the cold air, and the cooled process liquid falls into a recovery bin. After the heat exchange, the cooling airflow is converted into hot gas and discharged through the exhaust port. However, this direct exhaust method wastes too much heat resources.

[0004] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a cooling tower waste heat recovery device, which can adjust the structure of the exhaust port according to the heat dissipation state through a movable baffle and adaptively change the circulation state of the airflow.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a cooling tower waste heat recovery device, comprising a heat recovery space arranged at the exhaust port position of the cooling tower, wherein a heat recovery component is installed in the heat recovery space; a plurality of movable baffles are installed at the opening of the heat recovery space; in a first state, a sealing surface is formed between the plurality of movable baffles to seal the opening of the heat recovery space; in a second state, there is a gap between adjacent movable baffles for airflow to pass through, and the airflow can enter the heat recovery space through the gap.

[0007] According to the cooling tower waste heat recovery device of the present invention, the heat recovery component is a spiral coil, which is connected to the fluid circulation supply unit to drive the heat exchange fluid inside it to flow.

[0008] According to the cooling tower waste heat recovery device of the present invention, a rotating shaft is provided at the end of the movable baffle, and is rotatably installed at the opening of the heat recovery space.

[0009] According to the cooling tower waste heat recovery device of the present invention, a reversing gear is installed on the rotating shaft of each movable baffle; the reversing gears of the plurality of movable baffles are all engaged with a gear ring driven by a driver.

[0010] According to the cooling tower waste heat recovery device of the present invention, a flow guiding structure is provided on the plate surface of the movable baffle to drive the air flow to the heat recovery space.

[0011] According to the cooling tower waste heat recovery device of the present invention, the flow guide structure is an arc-shaped plate.

[0012] The utility model provides a cooling tower waste heat recovery device, comprising a heat recovery space arranged at the exhaust port of the cooling tower, wherein a heat recovery component is installed in the heat recovery space; the heat recovery component is a spiral coil connected to a fluid circulation supply unit (supply pump) to drive the heat exchange fluid (water or other medium) therein to flow, or the heat recovery component can also be a metal heat conductive plate structure. A plurality of movable baffles are installed at the opening of the heat recovery space. In a first state, a sealing surface is formed between the plurality of movable baffles to block the opening of the heat recovery space. In this state, the device is in a rapid heat dissipation state (the temperature of the liquid to be dissipated is high). In order to ensure the rapid circulation of the cooling airflow generated by the fan (so that the cooling airflow passes quickly through the interior of the device), the movable baffles are required to block the heat recovery space and ensure the conductivity of the airflow at the exhaust port side wall (forming a smooth side wall to avoid turbulence that affects the airflow circulation). In a second state, there is a gap between adjacent movable baffles for airflow to pass through, and the airflow can enter the heat recovery space through the gap. When the device is in a slow heat dissipation state (the temperature of the liquid to be dissipated is relatively low), the released heat can be recovered. At this time, the movable baffle is opened, allowing airflow to enter the heat recovery space through the gap and contact the heat recovery component to achieve waste heat recovery. The utility model can adjust the exhaust port structure according to the heat dissipation state through the movable baffle, adaptively changing the flow state of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the exhaust port of the utility model;

[0015] Figure 3 This is a schematic diagram of the first state of the movable baffle of the utility model;

[0016] Figure 4 This is a schematic diagram of the second state of the movable baffle of the utility model;

[0017] Figure 5It is a structural diagram of the movable baffle and its accessory parts;

[0018] In the figure, 7 is the exhaust port, 8 is the heat recovery space, 9 is the movable baffle, 91 is the reversing gear, 92 is the gear ring, and 10 is the arc plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying 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.

[0020] See also Figure 1 、 Figure 2 The utility model provides a cooling tower waste heat recovery device, which includes a heat recovery space 8 arranged at the exhaust port 7 of the cooling tower, and a heat recovery component is installed in the heat recovery space; the heat recovery component is a spiral coil 11, which is connected to a fluid circulation supply unit (supply pump) to drive the heat exchange fluid (water or other medium) inside it to flow, or the heat recovery component can also adopt a metal heat conductive plate structure.

[0021] A plurality of movable baffles 9 are installed at the opening of the heat recovery space 8 .

[0022] See also Figure 4 In the first state, a sealing surface is formed between several movable baffles 9 to block the opening of the heat recovery space 8. In this state, the equipment is in a rapid heat dissipation state (the temperature of the liquid to be dissipated is relatively high). In order to ensure the rapid circulation of the cooling airflow generated by the fan (so that the cooling airflow passes quickly through the inside of the equipment), the movable baffles 9 are required to block the heat recovery space 8 to ensure the conductivity of the airflow on the side wall of the exhaust port 7 (forming a smooth side wall to avoid turbulence that affects the circulation of the airflow).

[0023] See also Figure 2 and Figure 3 In the second state, there is a gap between adjacent movable baffles 9 for airflow, and airflow can enter the heat recovery space 8 through this gap. The equipment is in a slow heat dissipation state (the temperature of the liquid to be dissipated is relatively low), at which time the heat released can be recovered. At this time, the movable baffles 9 are open, and airflow can enter the heat recovery space 8 through the gap and come into contact with the heat recovery component to achieve waste heat recovery.

[0024] During the heat dissipation process of the liquid to be cooled, the liquid to be cooled is sprayed out from the nozzle and exchanges heat with the heat dissipation airflow generated by the fan, thereby achieving cooling. Finally, the cooled liquid to be cooled falls into the recovery bin (the above work is the working mode of the traditional open cooling tower, which is the existing technology and is only briefly described).

[0025] When the waste heat recovery is working, the heat of the air flow will be absorbed by the medium in the spiral coil and supplied to the outside of the equipment by the fluid circulation supply unit.

[0026] The movable baffle 9 is driven by a rotating shaft, which is mounted at the end of the movable baffle 9 and rotated at the opening of the heat recovery space 8. Each rotating shaft of the movable baffle 9 is mounted with a reversing gear 91. The reversing gears 91 of each movable baffle 9 mesh with a ring gear 92 driven by a driver (e.g., a drive motor). Specifically, the output end of the drive motor is also mounted with a gear, which meshes with the ring gear 92 to form a gear transmission structure. The driver drives the ring gear 92 to rotate, further driving the movable baffle 9 to switch its angle.

[0027] See also Figure 5 Preferably, a guide structure is provided on the surface of the movable baffle 9 of the present invention to drive the airflow to the heat recovery space 8, thereby improving the efficiency of the airflow entering the heat recovery space 8. The guide structure is an arc-shaped plate 10 or other guide structures.

[0028] In summary, the present invention provides a cooling tower waste heat recovery device, comprising a heat recovery space disposed at the exhaust port of the cooling tower, wherein a heat recovery component is installed in the heat recovery space; the heat recovery component is a spiral coil connected to a fluid circulation supply unit (supply pump) to drive the flow of the heat exchange fluid (water or other medium) therein, or the heat recovery component may also be a metal heat conducting plate structure. A plurality of movable baffles are installed at the opening of the heat recovery space. In a first state, a sealing surface is formed between the plurality of movable baffles, thereby sealing the opening of the heat recovery space. In this state, the device is in a rapid heat dissipation state (the temperature of the liquid to be dissipated is high). In order to ensure the rapid circulation of the cooling airflow generated by the fan (so that the cooling airflow passes quickly through the interior of the device), the movable baffles are required to seal the heat recovery space and ensure the conductivity of the airflow at the exhaust port sidewall (forming a smooth sidewall to avoid turbulence that affects the airflow). In a second state, a gap is provided between adjacent movable baffles for airflow to pass through, and the airflow can enter the heat recovery space through the gap. When the device is in a slow heat dissipation state (the temperature of the liquid to be dissipated is relatively low), the released heat can be recovered. At this time, the movable baffle is opened, allowing airflow to enter the heat recovery space through the gap and contact the heat recovery component to achieve waste heat recovery. The utility model can adjust the exhaust port structure according to the heat dissipation state through the movable baffle, adaptively changing the flow state of the airflow.

[0029] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A cooling tower waste heat recovery device, characterized in that: The heat recovery unit comprises a heat recovery space provided at the exhaust port of the cooling tower, wherein a heat recovery component is installed in the heat recovery space; A plurality of movable baffles are installed at the opening of the heat recovery space; In the first state, a plurality of movable baffles form a blocking surface to block the opening of the heat recovery space; In the second state, there is a gap between adjacent movable baffles for airflow to pass through, and the airflow can enter the heat recovery space through the gap.

2. The cooling tower waste heat recovery device according to claim 1, characterized in that: The heat recovery component is a spiral coil, which is connected to the fluid circulation supply unit to drive the heat exchange fluid inside it to flow.

3. The cooling tower waste heat recovery device according to claim 1, characterized in that: The end of the movable baffle is provided with a rotating shaft and is rotatably installed at the opening of the heat recovery space.

4. The cooling tower waste heat recovery device according to claim 3, characterized in that: The rotating shaft of each movable baffle is equipped with a reversing gear; the reversing gears of the plurality of movable baffles are all meshed with a gear ring driven by a driver.

5. The cooling tower waste heat recovery device according to claim 1, characterized in that: A flow guiding structure is provided on the plate surface of the movable baffle to drive the air flow to the heat recovery space.

6. The cooling tower waste heat recovery device according to claim 5, characterized in that: The flow-guiding structure is an arc-shaped plate.

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