Efficient water distribution device of cross-flow cooling tower

Abstract

The efficient water distribution device comprises a water distribution pipe and a water distribution spray head, the water distribution pipe is located above the water distribution spray head and can be divided into a water distribution main pipe and a plurality of water distribution branch pipes, the water distribution main pipe is connected with the water distribution branch pipes through flow distribution connectors, a plurality of water distribution holes are formed in the lower portions of the water distribution main pipe and the lower portions of the water distribution branch pipes, and the water distribution spray head is connected with the water distribution main pipe. The water distribution nozzle comprises a water distribution pipe, a plurality of thin circular truncated cone splash baffles and a plurality of water distribution holes, the water distribution pipe is connected with the thin circular truncated cone splash baffles through connecting rods, the adjacent thin circular truncated cone splash baffles are connected through connecting rods, and the water distribution holes are located in the centers of the upper surfaces of the thin circular truncated cone splash baffles. Water enters the water distribution pipe through the flow distribution connector along the water inlet pipe, then water distribution is completed through the water distribution holes below the water distribution pipe, water distribution is completed through the water distribution nozzles after the water falls onto the water distribution disc, the siphon phenomenon possibly occurring can be effectively eliminated, water distribution is more uniform, and therefore the efficiency of the cross flow cooling tower is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cooling towers, in particular to a high-efficiency water distribution device for a cross-flow cooling tower. Background Art

[0002] A cross-flow cooling tower is a cooling tower in which water flows vertically from the top of the tower, air flows horizontally through the water-sprinkling filler, and the airflow is orthogonal to the water flow. This design makes cross-flow cooling towers commonly used in residential areas with strict noise requirements, and is a cooling circulation tower that is widely used in the air conditioning industry. Inside the cooling tower, a large amount of water film is formed between water and air through the effect of cooling filler, thereby increasing the contact area between water and air. When air passes through the fan to form an airflow, heat and mass transfer will occur between the air film, so that the heat in the hot water is transferred to the air, thereby achieving the cooling of the hot water.

[0003] Traditional cross-flow cooling towers generally distribute water through trough-type water distributors arranged on both sides of the tower. There is an inverted U-shaped water inlet pipe arranged at one end of the trough-type water distributor. After entering the water, the cooling water flows from the water distribution hole near the outlet under the action of gravity through the water distribution hole to the cooling tower filler, and flows to the other far end. During the flow process, it continues to be distributed to the cooling tower filler through the water distribution hole it flows through.

[0004] In the above process, the outlet of the water inlet pipe is connected to the water distribution tray. When the flow rate is large, the water level in the water tray rises and submerges the outlet, which is prone to siphoning, which may lead to waste of water resources and damage to the equipment. The liquid level in the water tank near the water inlet is high, and the liquid level in the water tank at the far end is low. The flow rate through the water distribution holes is large in places with high liquid levels. If the water intake of the cooling tower is small sometimes, there may even be only water distribution at the near end, and no water flows at the far end, resulting in uneven water distribution in the filler, or even no water at one end. This phenomenon will cause uneven water distribution in the cooling tower filler, unbalanced wind flow resistance in the filler, and more airflow passes through the filler with less or no water, which seriously affects the contact between the airflow and water in the filler and reduces the heat dissipation effect of the cooling tower. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art solutions, to avoid the siphon phenomenon that may occur in the water inlet pipe, and to improve the uniformity of water distribution in the filler of the cross-flow cooling tower.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A high-efficiency water distribution device for a cross-flow cooling tower comprises: a water distribution pipe and a water distribution nozzle, wherein the water distribution pipe is located above the water distribution nozzle, the water distribution pipe can be divided into a water distribution main pipe and a plurality of water distribution branches, the water distribution main pipe is connected to the water inlet pipe through a diversion joint, the water distribution branch pipe is connected to the water distribution main pipe through a diversion joint, and a plurality of water distribution holes are provided below the water distribution main pipe and the water distribution branch pipe; the water distribution nozzle comprises a water distribution pipe, a plurality of thin frustum cone splash baffles and a plurality of water distribution holes, the water distribution pipe is connected to the thin frustum cone splash baffles through a connecting rod, the adjacent thin frustum cone splash baffles are connected through a connecting rod, and the water distribution hole is located at the center of the upper surface of the thin frustum cone splash baffle.

[0007] Preferably, the diameter of the water inlet pipe is the same as the diameter of the water distribution main pipe, and the diameter of the water distribution main pipe is the same as the diameter of the water distribution branch pipe.

[0008] Preferably, the distance between the bottom end of the water distribution branch pipe and the surface of the water distribution tray is 2 / 3 of the height of the water distribution tray.

[0009] Preferably, a plurality of overflow holes are provided on the side wall of the water distribution tray, and the height of the overflow holes is 1 / 2 of the height of the water distribution tray.

[0010] Preferably, the water distribution nozzle further comprises a thread, and the water distribution nozzle is connected to a nut in the water distribution tray via the thread, and the thread is located on the outer surface of the water distribution pipe.

[0011] Preferably, the diameter of the water distribution pipe is larger than the diameter of the water distribution hole, and the water distribution hole is located directly below the water distribution pipe.

[0012] Preferably, the thickness of the multiple thin conical splash baffles is the same, the angle between the side surface and the lower bottom surface of the thin conical splash baffle is 45°, the upper surface width of adjacent thin conical splash baffles decreases from top to bottom at a ratio of 2:1, and the height of adjacent thin conical splash baffles decreases from top to bottom at a ratio of 4:3.

[0013] The beneficial effects of the present invention are: 1. The present invention includes a water distribution pipe and a water distribution nozzle. Water enters the water distribution pipe through the diversion joint along the water inlet pipe, and then passes through the water distribution holes under the water distribution main pipe and the water distribution branch pipe to complete the water distribution; after the water falls on the water distribution tray, it is distributed through the water distribution nozzle. Most of the water falls on multiple thin frustum splash baffles. The rebound of the baffle increases the water distribution area, further ensuring the uniformity of water distribution;

[0014] 2. The distance between the bottom of the water distribution main pipe and the water distribution branch pipe and the surface of the water distribution pan is 2 / 3 of the height of the water distribution pan; the height of the overflow hole on the side wall of the water distribution pan is 1 / 2 of the height of the water distribution pan. When the water volume is large, the water in the water distribution pan will not flood the outlet of the water inlet pipe, effectively avoiding the possible siphon phenomenon;

[0015] 3. The water distribution nozzle is connected to the nut of the water distribution tray through a thread. The disassembly and installation of the water distribution nozzle will be simpler and faster, greatly reducing maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of a high-efficiency water distribution device for a cross-flow cooling tower provided by an embodiment of the present invention; Figure 2 It is a top view of a high-efficiency water distribution device for a cross-flow cooling tower provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a water distribution nozzle in a high-efficiency water distribution device of a cross-flow cooling tower provided by an embodiment of the present invention; Description of reference numerals: 1-water inlet pipe, 2-water distribution pipe, 21-water distribution main pipe, 22-water distribution branch pipe, 23-water distribution hole, 24-diversion joint, 3-water distribution tray, 31-overflow hole, 32-nut, 4-water distribution nozzle, 41-water distribution pipe, 42-thread, 43-connecting rod, 44-thin frustum splash baffle, 45-water distribution hole. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but they are not intended to limit the present invention.

[0018] Reference Figures 1 to 3 As shown, the embodiment of the present disclosure provides a high-efficiency water distribution device for a cross-flow cooling tower, including: a water distribution pipe 2 and a water distribution nozzle 4, the water distribution pipe 2 is located above the water distribution nozzle 4, the water distribution pipe 2 can be divided into a water distribution main pipe 21 and a plurality of water distribution branches 22, the water distribution main pipe 21 is connected to the water inlet pipe 1 through a diversion joint 24, the water distribution branch pipe 22 is connected to the water distribution main pipe 21 through a diversion joint 24, and a plurality of water distribution holes 23 are opened below the water distribution main pipe 22 and the water distribution branch pipe 22; the water distribution nozzle 4 comprises a water distribution pipe 41, a plurality of thin frustum cone splash baffles 44 and a plurality of water distribution holes 45. The water distribution pipe 41 is connected to the thin frustum cone splash baffles 44 through a connecting rod 43. Adjacent thin frustum cone splash baffles 44 are connected through the connecting rod 43. The water distribution hole 45 is located at the center of the upper surface of the thin frustum cone splash baffle 44. Water is distributed through the water distribution pipe 2 and then falls into the water distribution tray 3 and then distributed through the water distribution nozzle 4, so that the water distribution is more continuous and uniform, which effectively solves the problem of uneven water distribution in the filler.

[0019] The diameter of the water inlet pipe 1 is the same as that of the water distribution main pipe 21, and the diameter of the water distribution main pipe 21 is the same as that of the water distribution branch pipe 22; the water distribution main pipe 21 and the water distribution branch pipe 22 are at the same height, and the distance between the bottom end of the water distribution branch pipe 22 and the surface of the water distribution tray 3 is 2 / 3 of the height of the water distribution tray 3; a plurality of overflow holes 31 are provided on the side wall of the water distribution tray 3, and the height of the overflow holes 31 is 1 / 2 of the height of the water distribution tray 3; when the amount of water is large, the water level in the water distribution tray 3 continues to rise, and when the water level rises to a certain height, it overflows from the overflow holes 31, which will not affect the normal operation of the water distribution main pipe 21 and the water distribution branch pipe 22, and the water will not flood the water outlet of the water inlet pipe 1, effectively avoiding possible siphoning.

[0020] The water distribution nozzle 4 also includes a thread 42, which is connected to the nut 32 in the water distribution tray 3. The thread 42 is located on the outer surface of the water distribution pipe 41; the water distribution nozzle 4 can be quickly disassembled and assembled, which significantly improves maintenance efficiency and reduces the time and economic burden of maintenance operations.

[0021] The diameter of the water distribution pipe 41 is larger than the aperture of the water distribution hole 45. The water distribution hole 45 is located directly below the water distribution pipe 41. The thickness of multiple thin conical splash baffles 44 is the same. The angle between the side surface and the lower bottom surface of the thin conical splash baffle 44 is 45°. The upper surface widths of adjacent thin conical splash baffles 44 decrease from top to bottom at a ratio of 2:1, and the heights of adjacent thin conical splash baffles 44 decrease from top to bottom at a ratio of 4:3. After the water in the water distribution tray 4 falls from the water distribution pipe 41, part of the water falls on the thin conical splash baffle 44 and then rebounds, and the other part falls through the water distribution hole 45. Due to the geometric shape of the thin conical splash baffle 44, the water flow produces a rebound effect after the impact, which automatically guides the water droplets away from the water distribution nozzle 4, thereby improving the water dispersion efficiency, increasing the water distribution area, and achieving uniform water distribution.

[0022] A high-efficiency water distribution device for a cross-flow cooling tower, the working process and principle are as follows: Water enters the water distribution main pipe 21 through the diversion joint 24 along the water inlet pipe 1, and then enters multiple water distribution main pipes 22 through the diversion joint 24, completes water distribution through multiple water distribution holes 23 below the water distribution main pipe 21 and the water distribution branch pipe 22, and falls into the water distribution tray 3; the water in the water distribution tray 3 is divided into two parts after falling from the water distribution pipe 41, one part of the water falls on the thin frustum cone splash baffle 44 and rebounds and then is directed away from the water distribution nozzle 4, one part of the water flow first falls through the water distribution hole 45, and then one part of the water flow falls on the adjacent thin frustum cone splash baffle 44, and the other part of the water flow continues to fall through the adjacent water distribution hole 45, and so on. Finally, most of the water rebounds through the thin frustum cone splash baffle 44, and a small amount falls from the water distribution hole 45, thereby achieving uniform water distribution.

[0023] In the description of the present invention, it should be understood that the terms "center", "width", "thickness", "upper", "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the term "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-efficiency water distribution device for a cross-flow cooling tower, comprising: A water distribution pipe (2) and a water distribution nozzle (4), wherein the water distribution pipe (2) is located above the water distribution nozzle (4), and is characterized in that the water distribution pipe (2) can be divided into a water distribution main pipe (21) and a plurality of water distribution branch pipes (22), the water distribution main pipe (21) is connected to the water inlet pipe (1) via a diversion joint (24), the water distribution branch pipe (22) is connected to the water distribution main pipe (21) via a diversion joint (24), and a plurality of water distribution holes (23) are provided below the water distribution main pipe (21) and the water distribution branch pipe (22); The water distribution nozzle (4) comprises a water distribution pipe (41), a plurality of thin truncated cone splash baffles (44) and a plurality of water distribution holes (45); the water distribution pipe (41) is connected to the thin truncated cone splash baffles (44) via a connecting rod (43); adjacent thin truncated cone splash baffles (44) are connected via a connecting rod (43); and the water distribution hole (45) is located at the center of the upper surface of the thin truncated cone splash baffle (44).

2. A cross-flow cooling tower high-efficiency water distribution device according to claim 1, characterized in that: The diameter of the water inlet pipe (1) is the same as the diameter of the water distribution main pipe (21), and the diameter of the water distribution main pipe (21) is the same as the diameter of the water distribution branch pipe (22).

3. A cross-flow cooling tower high-efficiency water distribution device according to claim 2, characterized in that: The water distribution main pipe (21) and the water distribution branch pipe (22) are at the same height, and the distance between the bottom end of the water distribution branch pipe (22) and the surface of the water distribution tray (3) is 2 / 3 of the height of the water distribution tray (3).

4. A cross-flow cooling tower high-efficiency water distribution device according to claim 3, characterized in that: A plurality of overflow holes (31) are provided on the side wall of the water distribution tray (3), and the height of the overflow holes (31) is 1 / 2 of the height of the water distribution tray (3).

5. A cross-flow cooling tower high-efficiency water distribution device according to claim 1, characterized in that: The water distribution nozzle (4) further comprises a thread (42), and the water distribution nozzle (4) is connected to a nut (32) in the water distribution tray (3) via the thread (42), and the thread (42) is located on the outer surface of the water distribution pipe (41).

6. A cross-flow cooling tower high-efficiency water distribution device according to claim 1, characterized in that: The diameter of the water distribution pipe (41) is greater than the diameter of the water distribution hole (45), and the water distribution hole (45) is located directly below the water distribution pipe (41).

7. A cross-flow cooling tower high-efficiency water distribution device according to claim 1, characterized in that: The plurality of thin truncated cone splash baffles (44) have the same thickness, the angle between the side surface and the bottom surface of the thin truncated cone splash baffle (44) is 45°, the width of the upper surface of adjacent thin truncated cone splash baffles (44) decreases from top to bottom at a ratio of 2:1, and the height of adjacent thin truncated cone splash baffles (44) decreases from top to bottom at a ratio of 4:3.

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