Auxiliary driving device for cooling tower fan

Abstract

The utility model discloses an auxiliary driving device for a cooling tower fan. The auxiliary driving device comprises a cooling tower water inlet pipe, a hydroelectric generator, an inverter and the cooling tower fan, the cooling tower water inlet pipe is connected with a spraying pipe and a bypass flow pipe, the bypass flow pipe is connected with a hydroelectric generator and is provided with a valve, the hydroelectric generator is electrically connected with an inverter, the inverter is electrically connected with a power grid, and a cooling tower fan is electrically connected with the power grid; the hydroelectric generator is further connected with a water outlet pipe, the water outlet pipe is connected with an upward spraying pipe, the upward spraying pipe is arranged below the spraying pipe, spraying heads are correspondingly arranged on the spraying pipe and the upward spraying pipe, and a packing layer is further arranged in the cooling tower below the upward spraying pipe; part of circulating water is used for backwater power generation, the generated power can be used for driving the cooling tower fan, the water inlet pressure of the cooling tower is reduced, meanwhile, the daily operation cost of the cooling tower fan is reduced, in addition, due to the application of the upward spraying pipe, the downward spraying impact force of the spraying pipe can be further reduced through opposite flushing, and the packing layer is protected.

Description

Technical Field

[0001] The utility model relates to the field of fitness equipment, in particular to an auxiliary driving device for a cooling tower fan. Background Art

[0002] Affected by the length of the circulating water network and the operating pressure, the circulating water return residual pressure of some circulating water cooling towers is relatively large. If it passes directly into the tower for a long time, it will not only cause erosion and damage to the cooling tower nozzles and fillers, but also cause a large waste of energy. Therefore, a device is needed that can effectively utilize the circulating water return pressure energy and protect the nozzles and filler components in the cooling tower. Utility Model Content

[0003] In view of the problems existing in the background technology, the purpose of the utility model is to provide a cooling tower fan auxiliary drive device, which effectively solves the problems existing in the background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cooling tower fan auxiliary drive device comprises a cooling tower water inlet pipe, a hydroelectric generator, an inverter and a cooling tower fan; the cooling tower water inlet pipe is connected with a spray pipe and a bypass pipe, the bypass pipe is connected with the hydroelectric generator and has a valve, the hydroelectric generator is electrically connected with the inverter, the inverter is electrically connected with the power grid, and the cooling tower fan is electrically connected with the power grid; the hydroelectric generator is also connected with a water outlet pipe, the water outlet pipe is connected with an upward spray pipe, the upward spray pipe is located in the cooling tower and is arranged below the spray pipe, nozzles are correspondingly arranged on the spray pipe and the upward spray pipe, a packing layer is also arranged in the cooling tower below the upward spray pipe, and an air inlet and a water pool are arranged on the cooling tower below the packing layer.

[0006] Furthermore, the upward spray pipe is also provided with a blind spot filling nozzle which sprays downward.

[0007] Furthermore, a plurality of U-shaped air ducts are evenly distributed in the cooling tower above the spray pipe, and there is a gap between adjacent U-shaped air ducts. The left and right sides of the U-shaped air duct are respectively connected to the atmosphere outside the cooling tower. Two heat exchange pipe sections are arranged on the water outlet pipe, and the two heat exchange pipe sections are respectively located on the left and right sides of the U-shaped air duct.

[0008] Furthermore, the opening widths of the left and right sides of the U-shaped air duct are 30cm-50cm, and the gap between adjacent U-shaped air ducts is 1m-1.5m.

[0009] Furthermore, the heat exchange tube section is a fin coil section.

[0010] The utility model has the following beneficial technical effects: the utility model applies part of the circulating water return water to generate electricity, and the generated electricity can be used to drive the cooling tower fan, thereby reducing the water inlet pressure of the cooling tower and also reducing the daily operating costs of the cooling tower fan. In addition, the application of the upward spray pipe can further offset and reduce the impact force of the downward spray water of the spray pipe, protect the packing layer, and extend the service life of the packing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 It is a side view of the arrangement of the U-shaped air duct in the embodiment of the utility model. DETAILED DESCRIPTION

[0013] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0014] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0015] like Figure 1 and Figure 2As shown, the cooling tower fan auxiliary drive device described in this embodiment includes a cooling tower water inlet pipe 1, a hydroelectric generator 2, an inverter 3 and a cooling tower fan 4; the cooling tower water inlet pipe 1 is connected to a spray pipe 5 and a bypass pipe 6, the bypass pipe 6 is connected to the hydroelectric generator 2 and has a valve, and the amount of water entering the bypass pipe 6 is controlled by adjusting the valve opening size, the hydroelectric generator 2 is electrically connected to the inverter 3, the inverter 3 is electrically connected to the power grid, and the cooling tower fan 4 is electrically connected to the power grid; the hydroelectric generator 2 is also connected to a water outlet pipe 7, the water outlet pipe 7 is connected to an upward spray pipe 8, the upward spray pipe 8 is located in the cooling tower and is arranged below the spray pipe 5, and nozzles are correspondingly arranged on the spray pipe 5 and the upward spray pipe 8, and a packing layer 9 is also arranged in the cooling tower below the upward spray pipe 8, and an air inlet 10 and a water pool 11 are arranged on the cooling tower below the packing layer 9.

[0016] The upward spray pipe 8 is also provided with a blind spot filling nozzle 12 which sprays downward, so as to ensure that the packing layer 9 directly below the upward spray pipe 8 can also contact the distributed spray water.

[0017] A plurality of U-shaped air ducts 13 are evenly distributed in the cooling tower above the spray pipe 5, and there is a gap 14 between adjacent U-shaped air ducts 13. The left and right sides of the U-shaped air duct 13 are respectively connected to the atmosphere outside the cooling tower. Two heat exchange pipe sections 15 are arranged on the outlet pipe 7. The heat exchange pipe section 15 is a fin coil section. The two heat exchange pipe sections 15 are respectively located on the left and right sides of the U-shaped air duct 13; the opening widths of the left and right sides of the U-shaped air duct 13 are 30cm-50cm, and the gap 14 between adjacent U-shaped air ducts 13 is 1m-1.5m; when the cooling tower fan is running, part of the outside air enters the U-shaped air duct 13 from the left and right sides, and exchanges heat with the heat exchange pipe section 15 when entering. The air temperature rises and the circulating water temperature in the heat exchange pipe section 15 decreases. The heated air becomes dry hot air and is discharged upward into the cooling tower air chamber. At the same time, the air entering the cooling tower from the bottom contacts the spray water and exchanges heat with the spray water to become humid hot air, and then passes through the gap 14 between adjacent U-shaped air ducts 13 from bottom to top and enters the cooling tower air chamber. The evenly distributed dry hot air and humid hot air are stirred and mixed by the cooling tower fan and then discharged out of the tower. It is well known that direct discharge of humid hot air will produce white smoke, which is not conducive to meeting environmental protection requirements. The humid hot air mixed with dry hot air tends to remain in an unsaturated state. This can inhibit the formation of white smoke at the cooling tower outlet.

[0018] The working principle of this embodiment is:

[0019] Circulating water return enters from the cooling tower water inlet pipe 1, and the opening of the bypass pipe valve is adjusted according to the situation. Part of the circulating water return enters the bypass pipe 6 for use in the hydroelectric generator 2 to generate electricity. After the water flow completes the work, it enters the upward spray pipe 5 through the outlet pipe 7, and the upward spray pipe 8 and the spray pipe 5 are sprayed against each other, weakening the impact force of the spray water from the spray pipe 5, protecting the packing layer 9 below, and extending the service life of the packing layer 9. Compared with the prior art, in this embodiment, part of the circulating water return is used for power generation, and the generated electricity can be used to drive the cooling tower fan 4, which reduces the cooling tower inlet pressure while also reducing the daily operating costs of the cooling tower fan 4.

[0020] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. Auxiliary drive device for cooling tower fan, characterized in that: It includes a cooling tower water inlet pipe, a hydroelectric generator, an inverter and a cooling tower fan; the cooling tower water inlet pipe is connected with a spray pipe and a bypass pipe, the bypass pipe is connected to the hydroelectric generator and has a valve, the hydroelectric generator is electrically connected to the inverter, the inverter is electrically connected to the power grid, and the cooling tower fan is electrically connected to the power grid; the hydroelectric generator is also connected with a water outlet pipe, the water outlet pipe is connected with an upward spray pipe, the upward spray pipe is located in the cooling tower and is arranged below the spray pipe, nozzles are correspondingly arranged on the spray pipe and the upward spray pipe, a packing layer is also arranged in the cooling tower below the upward spray pipe, and an air inlet and a water pool are arranged on the cooling tower below the packing layer.

2. The cooling tower fan auxiliary drive device according to claim 1, characterized in that: The upward spray pipe is also provided with a blind spot filling nozzle which sprays downward.

3. The cooling tower fan auxiliary drive device according to claim 1 or 2, characterized in that: A plurality of U-shaped air ducts are evenly distributed in the cooling tower above the spray pipe, and there are gaps between adjacent U-shaped air ducts. The left and right sides of the U-shaped air duct are respectively connected to the atmosphere outside the cooling tower. Two heat exchange pipe sections are arranged on the water outlet pipe, and the two heat exchange pipe sections are respectively located on the left and right sides of the U-shaped air duct.

4. The cooling tower fan auxiliary drive device according to claim 3, characterized in that: The opening widths of the left and right sides of the U-shaped air duct are 30cm-50cm, and the gap between adjacent U-shaped air ducts is 1m-1.5m.

5. The cooling tower fan auxiliary drive device according to claim 3, characterized in that: The heat exchange tube section is a fin coil section.

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