Closed countercurrent cooling tower

Abstract

The utility model discloses a closed countercurrent cooling tower, which belongs to the field of cooling towers and comprises a tower body, an air inlet is arranged at the position of the tower body close to the bottom, a cooling coil pipe is arranged inside the tower body, a fan is arranged at the top of the tower body, a pump body is arranged on one side of the bottom of the tower body, and the pump body is connected with the cooling coil pipe. The pump body is connected with a spraying pipe through a pipeline assembly, the spraying pipe is arranged in the tower body and located above the cooling coil pipe, a plurality of spraying heads are arranged on the spraying pipe in the length direction of the spraying pipe, a driving assembly for driving the spraying pipe to rotate is arranged on one side of the tower body, and the driving assembly comprises a mounting frame fixed to the outer side face of the tower body; and the mounting frame is in driving connection with a screw rod through a servo motor. When the closed countercurrent cooling tower is used, the angle of the spray header on the cooling tower can be adjusted, so that spray water is more uniformly distributed on the filler layer to form a thinner and more uniform water film, and further, air flow is more sufficiently subjected to heat exchange with the water film, so that the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a closed countercurrent cooling tower. Background Art

[0002] Closed countercurrent cooling tower is an efficient and reliable cooling equipment. Its principle is to use the temperature difference and heat exchange principle between cooling water and air for cooling. Cooling water is injected from the top of the tower and flows downward along the countercurrent heat exchange surface inside the tower. At the same time, air enters from the bottom of the tower to exchange heat with the cooling water and take away the heat of the cooling water. Closed countercurrent cooling tower is widely used in industrial and commercial fields, such as power plants, chemical and pharmaceutical industries, food processing industry, refrigeration and air conditioning fields, etc.

[0003] When a closed countercurrent cooling tower is in use, cooling water is sprayed through a sprinkler head. Since the sprinkler head always sprays at a fixed angle, the sprinkler water cannot be evenly distributed on the packing layer, thereby failing to form a thinner and more uniform water film, further causing a decrease in the heat exchange efficiency of the cooling tower. Therefore, improvements are now being made to the closed countercurrent cooling tower. Utility Model Content

[0004] The utility model aims to propose a closed countercurrent cooling tower in order to solve the problem that the existing spray water cannot form a thinner and more uniform water film on the packing layer, thereby reducing the heat exchange efficiency of the cooling tower.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a closed countercurrent cooling tower, including a tower body, an air inlet is opened near the bottom of the tower body, a cooling coil is arranged inside the tower body, and a fan is arranged on the top of the tower body, a filler is arranged inside the tower body below the cooling coil, a pump body is arranged on one side of the bottom of the tower body, the pump body is connected to a spray pipe arranged inside the tower body above the cooling coil through a pipeline assembly, a plurality of spray heads are arranged on the spray pipe along its length direction, and a driving assembly for driving the spray pipe to rotate is arranged on one side of the tower body.

[0006] As a further description of the above technical solution: the driving assembly includes a mounting frame fixed to the outer side of the tower body, the mounting frame is connected to a screw rod through a servo motor, and the screw rod is provided with a sliding seat matched with the screw rod.

[0007] As a further description of the above technical solution: the spray pipe is provided with a bearing seat fixed on the outer side of the tower body, a gear is provided on one end of the spray pipe extending to the outside of the tower body, and a toothed plate matching the gear is provided on the slide seat.

[0008] As a further description of the above technical solution: the number of the spray pipes is two, and the spray heads on the two spray pipes are distributed in a staggered manner in the length direction of the spray pipes.

[0009] As a further description of the above technical solution: the pipeline assembly includes a U-shaped tube, the middle position of the U-shaped tube is connected to a connecting tube through a three-way tube, one end of the connecting tube is connected to the water outlet of the pump body, and the two ends of the U-shaped tube are connected to the spray pipe through a rotating pipe joint.

[0010] As a further description of the above technical solution: connection ports are provided at both ends of the cooling coil located outside the tower body.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] The closed countercurrent cooling tower can adjust the angle of the spray head on the cooling tower when in use, so that the spray head can swing back and forth, so that the spray water is more evenly distributed on the packing layer, forming a thinner and more uniform water film, and at the same time avoids the water film on the packing layer of the fixed-angle spray head being too thick or forming a dead angle, thereby allowing the airflow to more fully exchange heat with the water film, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0014] Figure 2 A partial structural schematic diagram according to an embodiment of the utility model is shown;

[0015] Figure 3 A schematic diagram of the structure of a drive assembly provided according to an embodiment of the utility model is shown;

[0016] Figure 4 A schematic diagram of the structure of a spray pipe provided according to an embodiment of the utility model is shown;

[0017] Figure 5 A structural schematic diagram of a pipeline assembly provided according to an embodiment of the utility model is shown.

[0018] Legend:

[0019] 1. Tower body; 2. Air inlet; 3. Cooling coil; 4. Fan; 5. Pump body; 6. Pipeline assembly; 61. U-shaped pipe; 62. Connecting pipe; 63. Rotating pipe joint; 7. Spray pipe; 71. Bearing seat; 72. Gear; 8. Spray head; 9. Drive assembly; 91. Mounting frame; 92. Servo motor; 93. Screw; 94. Slide seat; 95. Tooth plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-Figure 5 A closed countercurrent cooling tower provided in this embodiment includes a tower body 1, an air inlet 2 is opened near the bottom of the tower body 1, a cooling coil 3 is arranged inside the tower body 1, and a fan 4 is arranged on the top of the tower body 1, a filler is arranged below the cooling coil 3 inside the tower body 1, a pump body 5 is arranged on one side of the bottom of the tower body 1, the pump body 5 is connected to a spray pipe 7 arranged inside the tower body 1 and above the cooling coil 3 through a pipeline assembly 6, a plurality of spray heads 8 are arranged on the spray pipe 7 along its length direction, and a driving assembly 9 for driving the spray pipe 7 to rotate is arranged on one side of the tower body 1.

[0022] In the utility model, the airflow enters the tower body 1 through the air inlet 2 on the tower body 1, and the airflow flows upward under the action of the fan 4. The pump body 5 sends the spray liquid at the bottom of the tower body 1 to the spray pipe 7 through the pipeline assembly 6, and sprays it out through the spray head 8. The spray liquid contacts the airflow during spraying to dissipate heat. At the same time, the coolant in the cooling coil 3 exchanges heat with the airflow to achieve cooling. During the spraying process of the spray head 8 on the spray pipe 7, the driving assembly 9 can drive the spray pipe 7 to rotate, so that the spray head 8 can swing back and forth to adjust the angle, thereby making the spray water more evenly distributed on the packing layer, forming a thinner and more uniform water film, and the airflow can more fully exchange heat with the water film, thereby improving the heat exchange efficiency.

[0023] Specifically, refer to Figure 2 and Figure 3 The driving assembly 9 includes a mounting frame 91 fixed to the outer side of the tower body 1, and a screw rod 93 is connected to the mounting frame 91 through a servo motor 92, and a slide seat 94 is provided on the screw rod 93 to match it. The servo motor 92 on the mounting frame 91 drives the slide seat 94 on the screw rod 93 to move back and forth, thereby providing driving power for the spray pipe 7, so that the spray pipe 7 can swing back and forth with the slide seat 94, thereby making the spray head 8 on the spray pipe 7 spray more evenly.

[0024] Specifically, refer to Figure 2-Figure 4The spray pipe 7 is provided with a bearing seat 71 fixed to the outer side of the tower body 1, and a gear 72 is provided on one end of the spray pipe 7 extending to the outside of the tower body 1, and a tooth plate 95 matched with the gear 72 is provided on the slide 94. When the slide 94 moves, the tooth plate 95 is driven to move, and the movement of the tooth plate 95 drives the rotation of the gear 72 meshed therewith, thereby causing the spray pipe 7 to rotate through the bearing seat 71. When the spray pipe 7 rotates, the spray head 8 swings, ensuring that the spray water can be more evenly distributed on the packing layer.

[0025] It should be noted that there are two spray pipes 7, and the spray heads 8 on the two spray pipes 7 are staggered in the length direction of the spray pipe 7. The staggered distribution of the spray heads 8 can avoid the collision of spray water, and ensure that the spray water sprayed by the spray heads 8 can evenly fall on the cooling coil 3 and the filler when the spray pipe 7 is swung.

[0026] Specifically, refer to Figure 2 and Figure 5 The pipeline assembly 6 includes a U-shaped tube 61, a connecting tube 62 is connected to the middle of the U-shaped tube 61 through a tee, one end of the connecting tube 62 is connected to the water outlet of the pump body 5, and both ends of the U-shaped tube 61 are connected to the spray pipe 7 through a rotating pipe joint 63. The connecting tube 62 is connected to the pump body 5, and the rotating pipe joint 63 on the U-shaped tube 61 can ensure that the U-shaped tube 61 is connected to the spray pipe 7 while the spray pipe 7 can be rotated, so that the spray pipe 7 can be driven to rotate by the driving assembly 9, so that the spray water sprayed by the spray head 8 on the spray pipe 7 is more uniform.

[0027] Wherein, connection ports are provided at both ends of the cooling coil 3 outside the tower body 1 , and the connection between the cooling coil 3 and the cooling circulation pump is realized through the connection ports, so that cooling water can flow into the cooling coil 3 .

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A closed countercurrent cooling tower, characterized in that: The tower body (1) comprises a tower body (1), wherein an air inlet (2) is provided near the bottom of the tower body (1), a cooling coil (3) is provided inside the tower body (1), and a fan (4) is provided on the top of the tower body (1), a filler is provided inside the tower body (1) below the cooling coil (3), a pump body (5) is provided on one side of the bottom of the tower body (1), the pump body (5) is connected to a spray pipe (7) provided inside the tower body (1) above the cooling coil (3) through a pipeline assembly (6), a plurality of spray heads (8) are provided on the spray pipe (7) along its length direction, and a drive assembly (9) for driving the spray pipe (7) to rotate is provided on one side of the tower body (1).

2. A closed countercurrent cooling tower according to claim 1, characterized in that: The driving assembly (9) comprises a mounting frame (91) fixed on the outer side of the tower body (1); a screw rod (93) is connected to the mounting frame (91) through the drive of a servo motor (92); and a sliding seat (94) matching with the screw rod (93) is arranged on the screw rod (93).

3. A closed countercurrent cooling tower according to claim 2, characterized in that: The spray pipe (7) is provided with a bearing seat (71) fixed to the outer side of the tower body (1), a gear (72) is provided on one end of the spray pipe (7) extending to the outside of the tower body (1), and a toothed plate (95) matching with the gear (72) is provided on the slide seat (94).

4. A closed countercurrent cooling tower according to claim 1, characterized in that: The number of the spray pipes (7) is two, and the spray heads (8) on the two spray pipes (7) are distributed in a staggered manner in the length direction of the spray pipes (7).

5. A closed countercurrent cooling tower according to claim 4, characterized in that: The pipeline assembly (6) comprises a U-shaped tube (61), the middle position of the U-shaped tube (61) is connected to a connecting tube (62) via a tee tube, one end of the connecting tube (62) is connected to the water outlet of the pump body (5), and both ends of the U-shaped tube (61) are connected to the spray pipe (7) via a rotating pipe joint (63).

6. A closed countercurrent cooling tower according to claim 1, characterized in that: Both ends of the cooling coil (3) are provided with connection ports at positions outside the tower body (1).

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