Cooling tower noise reduction device

Abstract

The utility model discloses a cooling tower noise reduction device which comprises a shell, an upper noise reduction assembly and a lower noise reduction assembly, the upper noise reduction assembly comprises a supporting plate, noise reduction cotton and a barrier strip, the supporting plate is in threaded connection under an air outlet, the noise reduction cotton is fixed on the inner side of the supporting plate, the barrier strip is arranged on the inner side of the supporting plate, and the noise reduction cotton is fixed on the lower side of the supporting plate. And the lower silencing assembly is located at the bottom of the inner side of the shell and comprises guide plates, silencing plates, limiting grooves and limiting protrusions, the multiple sets of guide plates are hinged to the lower portion of the supporting plate at equal intervals, the two sets of limiting grooves are fixed to the right sides of the guide plates, and the limiting protrusions are clamped to the right sides of the limiting grooves. The silencing plate is fixed to the right side of the limiting protrusion. According to the silencing device, the fastening degree between the silencing assembly and the water guide plate can be improved, the situation that bonding is not firm after glue is soaked in water for a long time is prevented, the silencing device can be prevented from falling off from the water guide plate, and therefore application and popularization are facilitated.

Description

Technical Field

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

[0002] With the development of society, there are many types of cooling towers. Most of the ones we see are cooling towers used for air conditioning cooling. Since the noise of the cooling tower is too loud, a device that allows airflow to pass through through a silencer can prevent or reduce the propagation of sound. For example, the patent document with application number CN202022427818.5 discloses a fan noise reduction mechanism for a cooling tower, which uses a number of silencer honeycombs on the inner wall of the induced draft cylinder facing the fan body in combination with sound insulation cotton to further weaken the noise generated by the fan operation, thereby reducing the fan noise and improving the environmental protection of the device.

[0003] However, in the above-mentioned similar schemes, when the cooling tower replaces air outwards, the internal noise will be directly discharged along with the airflow, resulting in relatively loud noise at the air outlet. In addition, the silencer is fixed by glue, which causes the glue to become loose after being soaked in water for a long time, causing the silencer to fall off the water guide plate, which is not conducive to its promotion and use.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a cooling tower noise reduction device is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a cooling tower noise reduction device, which solves the above-mentioned similar solutions proposed in the above-mentioned background technology. When the cooling tower replaces air outward, the internal noise will be directly discharged along with the airflow, resulting in relatively large noise at the air outlet. In addition, the silencer is fixed by glue, which causes the glue to become loose after being soaked in water for a long time, causing the silencer to fall off the water guide plate, which is not conducive to the problem of promotion and use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling tower noise reduction device, comprising an outer shell, an upper silencer assembly and a lower silencer assembly, an exhaust outlet is fixed on the upper end of the outer shell, and the upper silencer assembly is located at the inner upper end of the outer shell, and the upper silencer assembly comprises a support plate, silencer cotton and a baffle, the support plate is threadedly connected directly below the exhaust outlet, and the silencer cotton is fixed on the inner side of the support plate, and the baffle is arranged on the inner side of the support plate, the lower silencer assembly is located at the inner bottom of the outer shell, and the lower silencer assembly comprises a guide plate, a silencer plate, a limiting groove and a limiting protrusion, a plurality of groups of guide plates are equidistantly hinged below the support plate, and two groups of limiting grooves are fixed on the right side of the guide plate, and the limiting protrusion is engaged with the right side of the limiting groove, and the silencer plate is fixed on the right side of the limiting protrusion.

[0007] Furthermore, an exhaust fan is bolted to the inner center of the exhaust port, and a servo motor is fixed to the upper end of the shell.

[0008] Furthermore, the support plate is funnel-shaped, the bottom diameter of the support plate is equal to the inner diameter of the shell, and the baffle is annular.

[0009] Furthermore, a water pipe is arranged below the support plate, and a plurality of groups of sprinkler heads are arranged at equal intervals on the lower surface of the water pipe.

[0010] Furthermore, a filler is provided below the water pipe, and a water collection area is provided below the filler.

[0011] Furthermore, the included angle between the guide plate and the filler is 30 degrees, and the limiting protrusion is matched with the limiting groove, and the guide plate forms a disassembly structure with the silencer plate through the limiting protrusion and the limiting groove.

[0012] The utility model provides a cooling tower noise reduction device, which has the following beneficial effects:

[0013] It can reduce the internal noise of the cooling tower when it replaces air to the outside, so as to avoid being directly discharged with the air flow, which is beneficial to reduce the noise at the exhaust port, and improve the fastening degree between the silencer assembly and the water guide plate, so as to prevent the glue from being soaked in water for a long time and becoming loose, and prevent the silencer from falling off the water guide plate, so as to facilitate its promotion and use. The specific contents are as follows:

[0014] The noise generated by the operation of the inner side of the device is separated by the baffle when it moves upward with the airflow, thereby reducing the noise generated by the airflow, and the edge of the airflow contacts the sound-absorbing cotton when passing through the exhaust port, thereby further reducing the noise generated before being discharged, and when water drips through the filler inside, it drips onto the sound-absorbing plate, thereby absorbing the noise generated by the falling water droplets, and the engagement of the limiting protrusion and the limiting groove can prevent the glue from being corroded, thereby improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a cooling tower noise reduction device of the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of a cooling tower noise reduction device of the utility model;

[0017] Figure 3 This is a schematic diagram of the exploded structure of the lower silencer component of a cooling tower noise reduction device of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of an upper silencer component of a cooling tower noise reduction device.

[0019] In the figure: 1. casing; 2. exhaust vent; 3. servo motor; 4. fan; 5. upper silencer assembly; 501. support plate; 502. silencer cotton; 503. baffle; 6. water pipe; 61. sprinkler head; 7. filler; 8. lower silencer assembly; 801. guide plate; 802. silencer plate; 803. limit groove; 804. limit protrusion; 9. water collection area. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 4 As shown, a cooling tower noise reduction device includes a shell 1, an upper silencer assembly 5 and a lower silencer assembly 8. An exhaust port 2 is fixed to the upper end of the shell 1. An exhaust fan 4 is connected to the inner central bolt of the exhaust port 2. A servo motor 3 is fixed to the upper end of the shell 1. The fan 4 is driven to rotate by the servo motor 3, which is conducive to discharging internal hot air outward. The servo motor 2 is arranged on the outside of the device to affect the ventilation area at the exhaust port 2, thereby reducing noise discharge. The upper silencer assembly 5 is located at the inner upper end of the shell 1, and the upper silencer assembly 5 includes a support plate 501, silencer cotton 502 and a baffle 503. The support plate 5 is threadedly connected directly below the exhaust port 2. 01. Because the shape of the support plate 501 is funnel-shaped, and because the bottom diameter of the support plate 501 is equal to the inner diameter of the outer shell 1, the hot steam inside can gather inward along the funnel shape when moving upward, thereby reducing the rotation speed of the fan 4, and further reducing the noise when the fan 4 rotates, and a sound-absorbing cotton 502 is fixed on the inner side of the support plate 501, and a baffle 503 is provided on the inner side of the support plate 501, and the baffle 503 is in the shape of a circular ring. The baffle 503 is used to separate the airflow, so that when the air is replaced outward, the internal noise can be reduced to avoid being directly discharged with the airflow, which is beneficial to reducing the noise at the exhaust port.

[0022] A water pipe 6 is arranged below the support plate 501, and a plurality of groups of spray heads 61 are equidistantly arranged on the lower surface of the water pipe 6. A filler 7 is arranged below the water pipe 6. High-temperature cooling water enters through the water pipe 9 and is cooled at the filler 7. The lower silencer assembly 8 is located at the inner bottom of the shell 1, and the lower silencer assembly 8 includes a guide plate 801, a silencer plate 802, a limiting groove 803 and a limiting protrusion 804. A plurality of groups of guide plates 801 are hinged equidistantly below the support plate 501. Because the angle between the guide plate 801 and the filler 7 is 30 degrees, the contact area between the guide plate 801 and the cooling water can be increased to prevent the cooling water from falling directly into the water collection area 9. Two groups of limiting grooves 803 are fixed on the right side of the guide plate 801, and the right side of the limiting groove 803 is engaged with the limiting protrusion 804. The positioning protrusion 804 is adapted to the limiting groove 803, and the cross-section of the limiting protrusion 804 is the same as the inner cross-section of the limiting groove 803, so that the limiting protrusion 804 can be inserted into the limiting groove 803, so that the guide plate 801 and the silencer plate 802 form a disassembly structure, and the mechanical snap-fit ​​structure can improve the tightness between the silencer assembly and the water guide plate 801 to prevent the glue from being loosely bonded after being soaked in water for a long time, and can prevent the silencer plate 802 from falling off the water guide plate 801, which is conducive to promotion and use. The silencer plate 802 is fixed to the right side of the limiting protrusion 804 to reduce the noise generated when the cooling water drips, and a water collection area 9 is arranged below the filler 7. The cooling water on the silencer plate 802 flows downward along its oblique edge into the water collection area 9, which can further reduce the noise emitted by the cooling tower.

[0023] In summary, when this type of cooling tower noise reduction device is used, first, insert one side of the silencer plate 802 with the limiting protrusion 804 into the limiting groove 803, and slide inward until the limiting protrusion 804 is fully engaged with the limiting groove 803, and the high-temperature cooling water enters the shell 1 through the water pipe 6, and is sprayed on the top of the filler 7 through the spray head 61. The high-temperature cooling water is converted into normal temperature water when cooled in the filler 7, and drips onto the silencer plate 802 from the bottom of the filler 7, and flows into the water collection area 9 along the oblique edge of the silencer plate 802. Due to the heat exchange of the dry gas entering the bottom of the cooling tower, it evaporates into the air and takes away the heat. At this time, the servo motor 3 is started, and the servo motor 3 drives the fan 4 to rotate through the belt, so that the air inside the cooling tower moves upward, and when the hot air moves to the support plate 501, it is divided by the internal baffle 503, thereby reducing the kinetic energy of the airflow when it moves, and the edge of the airflow contacts the silencer cotton 502, thereby further preventing the internal noise from being directly discharged with the airflow.

Claims

1. A cooling tower noise reduction device, comprising a housing (1), an upper silencer assembly (5) and a lower silencer assembly (8), characterized in that: An air outlet (2) is fixed to the upper end of the housing (1), and the upper silencer assembly (5) is located at the inner upper end of the housing (1), and the upper silencer assembly (5) comprises a support plate (501), silencer cotton (502) and a stop bar (503); the support plate (501) is threadedly connected directly below the air outlet (2), the silencer cotton (502) is fixed to the inner side of the support plate (501), and the stop bar (503) is arranged on the inner side of the support plate (501); the lower silencer assembly (8) is located at the inner upper end of the housing (1); The inner bottom of the shell (1), and the lower silencer assembly (8) comprises a guide plate (801), a silencer plate (802), a limiting groove (803) and a limiting protrusion (804), a plurality of groups of the guide plates (801) are hingedly connected at equal distances below the support plate (501), and two groups of the limiting grooves (803) are fixed on the right side of the guide plate (801), and the limiting protrusion (804) is engaged on the right side of the limiting groove (803), and the silencer plate (802) is fixed on the right side of the limiting protrusion (804).

2. A cooling tower noise reduction device according to claim 1, characterized in that: An exhaust fan (4) is bolted to the inner center of the exhaust port (2), and a servo motor (3) is fixed to the upper end of the housing (1).

3. A cooling tower noise reduction device according to claim 1, characterized in that: The support plate (501) is funnel-shaped, the bottom diameter of the support plate (501) is equal to the inner diameter of the outer shell (1), and the blocking bar (503) is annular in shape.

4. A cooling tower noise reduction device according to claim 3, characterized in that: A water pipe (6) is arranged below the support plate (501), and a plurality of groups of spray heads (61) are arranged at equal intervals on the lower surface of the water pipe (6).

5. A cooling tower noise reduction device according to claim 4, characterized in that: A filler (7) is provided below the water pipe (6), and a water collection area (9) is provided below the filler (7).

6. A cooling tower noise reduction device according to claim 5, characterized in that: The included angle between the guide plate (801) and the filler (7) is 30 degrees, and the limiting protrusion (804) is matched with the limiting groove (803), and the guide plate (801) forms a disassembly structure with the silencer plate (802) through the limiting protrusion (804) and the limiting groove (803).

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