Cooling tower with static pressure water distribution device

Abstract

The utility model discloses a cooling tower with a static pressure water distribution device, which relates to the technical field of refrigeration and comprises a tower body, a water tank layer, a packing layer and a drip tray layer are sequentially arranged in the tower body from bottom to top, and a water collecting tank is arranged in the drip tray layer and communicated with a water inlet pipe of the tower body. After entering, the water flow realizes automatic rotary water distribution through a rotary water distribution device arranged in the water collection tank, and a layered water distribution disc is arranged between the water collection tank and the filler layer and is used for receiving the water flow from the water collection tank, reducing the water flow velocity and reducing the water flow kinetic energy; the upper end of the filler layer is used for receiving water flow of the layered water distribution disc, and the lower end of the filler layer is communicated with the water tank layer; and the rotary water distribution device is also used for collecting water flow kinetic energy to realize energy recovery power generation. According to the layered static-pressure water distribution device, water flow impact kinetic energy which is not beneficial to static-pressure water distribution is eliminated, and water distribution dead angles are avoided; meanwhile, energy generated by water flow impact is reused, and energy waste is avoided.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration technology, in particular to a cooling tower with a static pressure water distribution device. Background Art

[0002] A cooling tower is a device that generates steam by exchanging heat between water and air. The steam is discharged from the air outlet, thereby lowering the air temperature in the tower and dissipating the preheat generated by industry to lower the water temperature.

[0003] During the operation of the cooling tower, when the cooling water enters the cooling tower through the operation of the water pump, a large water flow impact will be generated. The waves formed by these lateral forces will affect the stability of the water falling in the water distribution tray and weaken the heat exchange effect of the cooling tower. In addition, the existing water distribution device cannot reasonably utilize this kinetic energy of water, resulting in energy waste, which is not conducive to energy conservation and environmental protection, and is inconsistent with the national policy of energy conservation. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a cooling tower with a static pressure water distribution device. Through the layered static pressure water distribution device, the water flow impact kinetic energy that is not conducive to static pressure water distribution is eliminated, the water distribution dead corner is avoided, the water distribution uniformity and the stability of the water flow are increased, and the heat exchange effect of the cooling tower is improved, so as to achieve the purpose of saving money and reducing consumption. At the same time, the principle of the hydraulic turbine generator is used to reuse the energy generated by the water flow impact, so as to avoid energy waste, be beneficial to energy saving and environmental protection, and be consistent with the national energy saving policy.

[0005] The purpose of the utility model is achieved through the following technical solutions: such a cooling tower with a static pressure water distribution device comprises a tower body, in which a water tank layer, a packing layer and a drip tray layer are arranged in sequence from bottom to top, a water collecting tank is arranged in the drip tray layer, and the water collecting tank is connected with the water inlet pipe of the tower body. After the water flows in, it realizes automatic rotational water distribution through a rotating water distribution device arranged in the water collecting tank. A layered water distribution tray is arranged between the water collecting tank and the packing layer, which is used to receive the water flow from the water collecting tank, and at the same time reduce the water flow velocity and the kinetic energy of the water flow to realize static pressure balanced water distribution; the upper end of the packing layer is used to receive the water flow of the layered water distribution tray, and the lower end of the packing layer is connected with the water tank layer, and water is discharged from the water outlet pipe connected to the water tank layer; the rotating water distribution device is also used to collect the kinetic energy of the water flow to realize energy recovery and power generation.

[0006] As a further technical solution, the water collecting box is made of a shell made of anti-corrosion plate material, the shell is radially closed, a number of drainage holes are evenly opened at the bottom, and a water inlet hole matching the water inlet pipe is opened on the shell.

[0007] As a further technical solution, the layered water distribution pan includes an upper water distribution pan, a middle water distribution pan and a bottom water distribution pan which are arranged in sequence from top to bottom, and all three are made of anti-corrosion plates; the upper water distribution pan and the middle water distribution pan are fixed on the inner wall of the drip pan layer through water distribution pan supports, and the bottom water distribution pan is fixed on the top of the packing layer.

[0008] As a further technical solution, the upper water distribution tray has folded edges all around, which are 45 degrees downward, and a number of evenly distributed water discharge holes are opened through the bottom of the upper water distribution tray. The upper water distribution tray is horizontally arranged directly below the water collecting tank.

[0009] As a further technical solution, the middle water distribution tray has folded edges all around, which are 45 degrees downward, and a number of evenly distributed water discharge holes are opened through the bottom of the middle water distribution tray. The middle water distribution tray is horizontally arranged directly below the upper water distribution tray.

[0010] As a further technical solution, the bottom water distribution tray is folded upwards on all sides, and a number of evenly distributed water discharge holes are opened through the bottom of the bottom water distribution tray. The bottom water distribution tray is horizontally arranged directly below the middle water distribution tray.

[0011] As a further technical solution, the diameters of the water holes of the water collecting tank, the upper water distribution tray, the middle water distribution tray and the bottom water distribution tray decrease successively, and the total opening areas of the four increase successively.

[0012] As a further technical solution, the rotating water distribution device includes an impeller arranged in the water collecting tank shell, the impeller is coaxially connected to one end of the motor shaft core, and the other end of the motor shaft core passes through the shell and is connected to drive a hydro-turbine generator, which is fixed on the shell.

[0013] As a further technical solution, a drip tray cover is provided on the tower body at the top of the drip tray layer for fixing the hydro-generator, the lead wires of the hydro-generator are connected to a generator junction box for accommodating electrical components, and the generator junction box is provided on the tower body.

[0014] As a further technical solution, the water inlet pipe, the rotating water distribution device and the water collecting tank constitute a water storage unit. The cooling water flow introduced from the water inlet pipe drives the hydro-generator to generate electricity by impacting the impeller, and the impeller rotates to achieve water distribution.

[0015] The beneficial effects of the utility model are:

[0016] 1. The energy dissipation and water distribution device is formed by a layered water distribution pan to improve the stability of the water flow in the water distribution pan, achieve the effect of balanced water distribution, eliminate the blind area of ​​water distribution, increase the overall contact area between cooling air and hot water, and improve the cooling efficiency;

[0017] 2. Impeller generators and impellers are easily available products on the market. While the impeller rotates to distribute water, it can also drive the energy recovery power generation device (i.e., impeller generator), which utilizes the energy of the water flow impact in the cooling tower, enhances the heat exchange effect of the cooling tower, and can also be converted into electrical energy for supply. The electricity generated by the turbine generator can be directly supplied to customers for small-scale electricity consumption, which reduces environmental protection costs and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the connection structure between the middle water distribution tray and the tower body (drip tray layer) in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the water collecting tank in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the rotary water distribution device in the utility model.

[0022] Figure 5 It is a schematic diagram of the circuit connection structure between the recovered electric energy and the user's power supply in the utility model.

[0023] Explanation of the reference numerals: tower body 1, water tank layer 2, packing layer 3, drip tray layer 4, water inlet pipe 5, water outlet pipe 6, rotary water distribution device 7, hydro-generator 71, impeller 72, motor shaft core 73, water collecting tank 8, water inlet hole 81, upper water distribution tray 9, middle water distribution tray 10, water distribution tray support 101, bottom water distribution tray 11, power generation junction box 12, drip tray cover 13, water drain hole 14, recovered electric energy L1, user power supply L2. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below with reference to the accompanying drawings:

[0025] Example: As shown in the attached Figures 1 to 5 As shown, the cooling tower with a static pressure water distribution device includes a tower body 1, a water tank layer 2, a packing layer 3, a drip tray layer 4, a water inlet pipe 5, a water outlet pipe 6, a rotary water distribution device 7, a hydro-generator 71, an impeller 72, a motor shaft core 73, a water collecting tank 8, a water inlet hole 81, an upper water distribution tray 9, a middle water distribution tray 10, a water distribution tray support 101, a bottom water distribution tray 11, a power generation junction box 12, a drip tray cover 13 and a water outlet 14.

[0026] Reference Figure 1 The cooling tower body 1 is provided with a water tank layer 2, a packing layer 3 and a drip tray layer 4 from bottom to top, and a water collecting tank 8 is provided in the drip tray layer 4. Figure 3As shown (the opening in the figure is opened for the convenience of showing the internal impeller 72 and does not actually exist), the water collecting tank 8 is made of an anti-corrosion plate shell, the shell is radially closed, and a number of φ12 water holes 14 are evenly opened on the bottom of the shell. In addition, a water inlet hole 81 matching the diameter of the water inlet pipe 5 is opened on the shell, and an axial hole matching the diameter of the motor shaft core 73 is opened on the top of the shell, so that the water collecting tank 8 is connected to the water inlet pipe 5 of the tower body 1. After the water flows into the water collecting tank 8, it realizes automatic rotation and water distribution through the rotating water distribution device 7 arranged in the water collecting tank 8.

[0027] Further, such as Figure 3 , 4 As shown, the rotary water distribution device 7 includes an impeller 72 disposed in the housing of the water collecting tank 8, the impeller 72 is coaxially connected to the lower end of the motor shaft core 73, the upper end of the motor shaft core 73 penetrates the housing and is connected to drive the hydro-generator 71, and the hydro-generator 71 is fixed on the housing of the water collecting tank 8. Figure 1 As shown, a drip tray cover plate 13 is provided on the tower body 1 at the top of the drip tray layer 4, which is used to fix the hydro-generator 71. The lead wire of the hydro-generator 71 is connected to the power generation junction box 12 for accommodating electrical components, and the power generation junction box 12 is fixed on the tower body 1. When in use, the water storage unit is composed of the water inlet pipe 5, the rotary water distribution device 7 and the water collection tank 8. The cooling water flow introduced from the water inlet pipe 5 drives the hydro-generator 71 to generate electricity by impacting the impeller 72, and the impeller 72 rotates to realize the rotary water distribution in the water collection tank 8.

[0028] A layered water distribution pan is arranged between the water collecting tank 8 and the packing layer 3, which can receive the water flow from the water collecting tank 8, while reducing the water flow velocity and kinetic energy of the water flow to achieve static pressure balanced water distribution. The upper end of the packing layer 3 is used to receive the water flow of the layered water distribution pan, and the lower end of the packing layer 3 is connected to the water tank layer 2, and water is discharged from the outlet pipe 6 connected to the water tank layer 2. The rotating water distribution device 7 can also collect the kinetic energy of the water flow to achieve energy recovery and power generation. Under the action of the fan, the air and the water flow in the packing layer 3 perform heat exchange, and the cooled air becomes hot air and is discharged from the tower body 1, while the water flow is cooled.

[0029] Furthermore, the layered water distribution tray includes an upper water distribution tray 9, a middle water distribution tray 10 and a bottom water distribution tray 11 which are arranged in sequence from top to bottom, and all three are made of anti-corrosion plates. Figure 2 As shown (the middle water distribution tray 10 is taken as an example in the figure, and the connection structure is consistent with the upper water distribution tray 9 and the drip tray layer 4), the upper water distribution tray 9 and the middle water distribution tray 10 are fixed on the inner wall of the drip tray layer 4 through the water distribution tray support 101, and the bottom water distribution tray 11 is fixed on the top of the packing layer 3.

[0030] Preferably, the upper water distribution pan 9 is folded downward at 45° on all sides, and a number of evenly distributed φ10 drain holes 14 are provided at the bottom of the upper water distribution pan 9, and the total opening area of ​​the upper water distribution pan 9 is 1.5 times the total opening area of ​​the water collection tank 8. In addition, the upper water distribution pan 9 is horizontally arranged directly below the water collection tank 8. The middle water distribution pan 10 is also folded downward at 45° on all sides, and a number of evenly distributed φ8 drain holes 14 are provided at the bottom of the middle water distribution pan 10, and the total opening area of ​​the middle water distribution pan 10 is 3 times the total opening area of ​​the water collection tank 8. The middle water distribution pan 10 is horizontally arranged directly below the upper water distribution pan 9. The bottom water distribution pan 11 is folded upwards on all sides, and a number of evenly distributed φ6 drainage holes 14 are opened through the bottom of the bottom water distribution pan 11. The total opening area of ​​the bottom water distribution pan 11 is 4.2 times the total opening area of ​​the water collection tank 8. The bottom water distribution pan 11 is horizontally arranged directly below the middle water distribution pan 10. The diameters of the drainage holes 14 of the water collection tank 8, the upper water distribution pan 9, the middle water distribution pan 10 and the bottom water distribution pan 11 decrease in sequence, and the total opening area of ​​the four increases in sequence.

[0031] As a preferred technical solution, the power generation impeller 72 can take various forms such as arc and straight plate, and the material should be conducive to noise reduction and water cooling. The capacity of the water collecting tank 8 should match the water flow of the water inlet pipe 5, and at the same time ensure that the water volume in the water collecting tank 8 accounts for 60% of the total capacity of the tank. By increasing the water inlet pressure, the power generation efficiency of the hydro-generator 71 will also increase accordingly. The hydro-generator 71 can be purchased according to the water pressure and water flow. Taking the 100RT cooling tower as an example, the power generation power calculated according to the energy conversion formula is about 0.8kW, which can meet the power consumption of small equipment.

[0032] The working process of this utility model:

[0033] Since the water collecting tank 8 is designed as a radially closed shell with water falling from the bottom, when the cooling water is concentrated into the water collecting tank 8 from the water inlet pipe 5, the impeller 72 is impacted by the impact of the water flow, so that the impeller 72 automatically rotates to achieve the purpose of water distribution. The upper water distribution tray 9, the middle water distribution tray 10, and the bottom water distribution tray 11 are installed in sequence directly below the water collecting tank 8. After the water flows from the water collecting tank 8 and passes through the layered water distribution tray (i.e., three water distribution trays), the kinetic energy is further reduced to achieve the effect of balanced water distribution. Subsequently, the water flows steadily to the packing layer 3, and the cooling air enters the tower body 1 and the water flow in the packing layer 3 from the air inlet surface for sufficient heat exchange cooling. Finally, the water flows into the water tank layer 2, and the cooling air after heat exchange becomes hot air and is discharged from the tower body 1 through the fan.

[0034] like Figure 3 , 4 As shown, the rotating water distribution device 7 converts the residual impact kinetic energy of the water supply from the water inlet pipe 5 into electrical energy, which is connected to the power generation junction box 12 through the lead wire of the hydro-generator 71 and then sent out.

[0035] like Figure 5 As shown, the cooling tower recovered power L1 and the user power L2 are designed in parallel, and intelligent switching is achieved through detection devices and switches. When the water pump (impeller 72 / hydraulic generator 71) stops running, the recovered power L1 is missing and it can automatically switch to the user power L2 for operation.

[0036] In summary, the utility model is to install a static pressure water distribution device in the drip tray layer 4, collect the cooling water into the water collection box 8, use the water's impact to automatically rotate the water distribution, and then form a static pressure water layer with a water film of less than 5mm through the layered water distribution tray, improve the uniformity of water distribution and the stability of water falling in the packing layer 3, avoid the formation of dead angles for water distribution, and achieve the purpose of further static pressure balanced water distribution. At the same time, the rotating water distribution device 7 installed in the water collection box 8 also serves as an energy recovery power generation device, converting the residual impact kinetic energy of the water supply into electrical energy and then outputting it, realizing partial electricity consumption, and ultimately achieving the purpose of energy saving and consumption reduction.

[0037] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A cooling tower with a static pressure water distribution device, characterized in that: The tower body (1) comprises a water tank layer (2), a packing layer (3) and a drip tray layer (4) arranged in sequence from bottom to top in the tower body (1); a water collecting box (8) is arranged in the drip tray layer (4); the water collecting box (8) is connected to a water inlet pipe (5) of the tower body (1); after water flows in, water is automatically distributed by a rotating water distribution device (7) arranged in the water collecting box (8); a layered water distribution tray is arranged between the water collecting box (8) and the packing layer (3) for receiving water from the water collecting box (8), while reducing the water flow velocity and kinetic energy of the water flow, thereby realizing static pressure balanced water distribution; the upper end of the packing layer (3) is used to receive water from the layered water distribution tray; the lower end of the packing layer (3) is connected to the water tank layer (2), and water flows out from a water outlet pipe (6) connected to the water tank layer (2); the rotating water distribution device (7) is also used to collect kinetic energy of the water flow, thereby realizing energy recovery and power generation.

2. The cooling tower with a static pressure water distribution device according to claim 1, characterized in that: The water collecting box (8) is made of an anti-corrosion plate material to form a shell, the shell is radially closed, a plurality of water discharge holes (14) are evenly arranged at the bottom, and a water inlet hole (81) matching the water inlet pipe (5) is arranged on the shell.

3. The cooling tower with a static pressure water distribution device according to claim 2, characterized in that: The layered water distribution pan comprises an upper water distribution pan (9), a middle water distribution pan (10) and a bottom water distribution pan (11) which are arranged in sequence from top to bottom, and all three are made of anti-corrosion plates; the upper water distribution pan (9) and the middle water distribution pan (10) are fixed to the inner wall of the drip pan layer (4) through a water distribution pan support (101), and the bottom water distribution pan (11) is fixed to the top of the packing layer (3).

4. The cooling tower with a static pressure water distribution device according to claim 3, characterized in that: The upper water distribution tray (9) has folded edges all around, the folded edges are 45 degrees downward, and a plurality of evenly distributed water discharge holes (14) are provided through the bottom of the upper water distribution tray (9). The upper water distribution tray (9) is horizontally arranged directly below the water collection tank (8).

5. The cooling tower with a static pressure water distribution device according to claim 4, characterized in that: The middle water distribution tray (10) has folded edges on all sides, which are 45 degrees downward, and a plurality of evenly distributed water discharge holes (14) are provided through the bottom of the middle water distribution tray (10). The middle water distribution tray (10) is horizontally arranged directly below the upper water distribution tray (9).

6. The cooling tower with a static pressure water distribution device according to claim 5, characterized in that: The bottom water distribution tray (11) is folded upwards on all sides, and a plurality of evenly distributed water discharge holes (14) are provided through the bottom of the bottom water distribution tray (11). The bottom water distribution tray (11) is horizontally arranged directly below the middle water distribution tray (10).

7. The cooling tower with a static pressure water distribution device according to claim 6, characterized in that: The diameters of the water holes (14) of the water collecting box (8), the upper water distribution tray (9), the middle water distribution tray (10) and the bottom water distribution tray (11) decrease in sequence, and the total opening areas of the four increase in sequence.

8. The cooling tower with a static pressure water distribution device according to claim 2, characterized in that: The rotary water distribution device (7) comprises an impeller (72) disposed in the housing of the water collecting tank (8); the impeller (72) is coaxially connected to one end of a motor shaft core (73); the other end of the motor shaft core (73) penetrates the housing and is connected to drive a water turbine generator (71); and the water turbine generator (71) is fixed to the housing.

9. The cooling tower with a static pressure water distribution device according to claim 8, characterized in that: A drip tray cover plate (13) is provided on the tower body (1) at the top of the drip tray layer (4) and is used to fix the hydro-generator (71). Lead wires of the hydro-generator (71) are connected to a power generation junction box (12) for accommodating electrical components. The power generation junction box (12) is provided on the tower body (1).

10. The cooling tower with a static pressure water distribution device according to claim 8 or 9, characterized in that: The water inlet pipe (5), the rotating water distribution device (7) and the water collecting tank (8) form a water storage unit. The cooling water flow introduced from the water inlet pipe (5) drives the water turbine generator (71) to generate electricity by impacting the impeller (72), while the impeller (72) rotates to distribute water.

Images