Tubular silencer for cooling tower

Abstract

The utility model relates to the technical field of cooling tower noise reduction, in particular to a tubular muffler for a cooling tower, which comprises a plurality of muffling bodies, a mounting bracket, a rotating shaft and a retaining component, the muffling bodies are arranged in a matrix array, each muffling body is of a tubular structure, each muffling body comprises a muffling layer, the muffling layer is formed by winding and weaving a plurality of filaments, and the rotating shaft is arranged on the mounting bracket. The silencing layers are coaxially arranged in a sleeved mode, the multiple installation supports are arranged between the opposite ends of the adjacent silencing bodies, the ends of the silencing bodies are rotationally connected with the installation supports through rotating shafts, and the maintaining assemblies are installed on the installation supports so that the bottoms of the silencing bodies can be partially immersed below the liquid level; the noise reduction device is simple in structural design and capable of obviously reducing noise and has a self-cleaning function.

Description

Technical Field

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

[0002] During the operation of the mechanical ventilation cooling tower, the water droplets at the bottom of the filler generate potential energy due to gravity. After hitting the water surface (rigid wall) in the cooling tower pool, they are converted into a combination of kinetic energy and sound energy, thereby causing noise. Under normal circumstances, the maximum noise at the air inlet of the cooling tower can reach 80-85dB (A), which is a relatively difficult noise to attenuate. In order to reduce the noise index of the cooling tower body as much as possible, a water-falling silencer filler is generally installed above the water pool of the mechanical ventilation cooling tower to reduce the water-falling noise of the cooling tower.

[0003] Conventional water-falling sound-absorbing fillers use PVC sound-absorbing fillers, which are generally 300mm in height. They are made of PVC sheets with a sloped surface bonded by adhesives. After bonding, the fillers are in a hexagonal honeycomb state, and the surface of the flow channel is a smooth slope, so that when water droplets pass through the flow channel, they impact the slope to reduce the kinetic energy of the water droplets, thereby achieving the purpose of sound absorption. However, the water-falling sound-absorbing filler has the following defects: (1) Since the diameter of the honeycomb flow channel is 50-70mm, the kinetic energy of the water droplets cannot be completely reduced, and the sound-absorbing filler cannot break up and refine the water droplets, so that the surface of the sound-absorbing filler will still gather into a larger water column. This water column will still cause secondary water entry noise when it enters the water surface of the pool, resulting in poor overall noise reduction effect, which can generally only reduce about 5-8dB(A); (2) The height of the water-falling sound-absorbing filler is fixed and cannot be adjusted according to the height change of the water surface of the pool, resulting in unstable overall noise reduction effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art and to provide a tubular muffler for a cooling tower which has a simple structural design, can significantly reduce noise and has a self-cleaning function.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a tubular silencer for a cooling tower, comprising a silencer, a mounting bracket, a rotating shaft and a retaining assembly, wherein the silencers are multiple and arranged in a matrix array, the silencers are of a tubular structure, the silencers include a silencer layer, the silencer layer is formed by winding and weaving a plurality of filaments, the silencer layer is multi-layered and coaxially sleeved, the mounting brackets are multiple and arranged between opposite ends of adjacent silencers, the ends of the silencers are rotatably connected to the mounting brackets through the rotating shaft, and the retaining assembly is installed on the mounting brackets so that the bottom portion of the silencer is immersed below the liquid surface.

[0006] Furthermore, the mounting bracket is a hollow structure, and a mounting hole is provided at its end near the muffler, the left end of the rotating shaft is inserted into the muffler, and the right end thereof extends through the mounting hole into the mounting bracket, and the rotating shaft is rotatably matched with the mounting hole.

[0007] Furthermore, the mounting hole includes a large circular portion and a narrow straight portion, the large circular portion is arranged at the top end of the narrow straight portion and is connected to the narrow straight portion, and the width of the narrow straight portion is slightly larger than the diameter of the right end of the rotating shaft and smaller than the diameter of the large circular portion.

[0008] Furthermore, a limit plate is installed at the right end of the rotating shaft, and the diameter of the limit plate is slightly smaller than the diameter of the large circular part and larger than the width of the narrow straight part.

[0009] Furthermore, the outer diameter of the muffler is about 10 cm and the length is about 2 m.

[0010] Furthermore, the retaining assembly is a buoy installed at the bottom end of the mounting bracket.

[0011] Furthermore, the retaining assembly includes a sensor and an adjustment group. The sensor is respectively installed at a lower middle position of the left and right sides of the mounting bracket, and the adjustment group is respectively arranged at the front and rear ends of the mounting bracket.

[0012] Furthermore, the adjustment group includes a fixed pulley, a rope, a winding drum and a motor, the fixed pulley is installed on the structural beam on the upper part of the water tank, one end of the rope is connected to the end of the mounting bracket, and the other end of the rope bypasses the fixed pulley and is wound on the winding drum, the motor is installed on the tower wall of the cooling tower, and its output end is connected to the winding drum.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model uses a multi-layer sound-absorbing layer to break up water droplets falling onto the sound-absorbing body to the greatest extent, and combines it with a retaining component to always keep the bottom part of the sound-absorbing body immersed under the liquid surface, thereby completely eliminating the kinetic energy of the water droplets and avoiding secondary water entry noise. The noise reduction reaches 10-15dB (A), thereby improving the noise reduction effect and ensuring the stability of the noise reduction effect.

[0015] (2) The utility model designs the silencer into a tubular structure, and the silencer and the mounting bracket are rotatably connected via a rotating shaft. When a certain weight of debris is accumulated on the surface of the silencer, the silencer will become unbalanced and automatically rotate, causing the accumulated debris to fall into the pool, thereby avoiding excessive load on the silencer and ensuring the silencer's ability to reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0017] Figure 1 It is a top view of the utility model;

[0018] Figure 2 It is a schematic diagram of the buoy in the utility model;

[0019] Figure 3 It is a side view of the mounting bracket in the utility model;

[0020] Figure 4 It is a schematic diagram of the sensor in the utility model;

[0021] Figure 5 It is a schematic diagram of the adjustment group in the utility model.

[0022] In the figure: 100, silencer; 200, mounting bracket; 210, mounting hole; 211, large circular portion; 212, narrow straight portion; 300, rotating shaft; 400, retaining assembly; 410, sensor; 420, adjustment group; 421, fixed pulley; 422, rope; 423, winding drum; 424, motor; 500, limit disk. DETAILED DESCRIPTION

[0023] The present invention is now further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] Example 1

[0025] like Figure 1 and Figure 2As shown, a tubular silencer for a cooling tower includes a silencer 100, a mounting bracket 200, a rotating shaft 300 and a retaining assembly 400. There are multiple silencers 100 arranged in a matrix array. The silencer 100 is a tubular structure. The silencer 100 includes a silencer layer, which is formed by winding and weaving a plurality of filaments. The silencer layer is multi-layered and coaxially sleeved. There are multiple mounting brackets 200, which are arranged between opposite ends of adjacent silencers 100. The end of the silencer 100 is rotatably connected to the mounting bracket 200 through the rotating shaft 300. The retaining assembly 400 is installed on the mounting bracket 200 so that the bottom portion of the silencer 100 is immersed below the liquid surface. The water droplets falling onto the silencer 100 are broken to the greatest extent by setting up multiple layers of silencer layers, and the bottom part of the silencer 100 is always kept submerged under the liquid surface by the retaining assembly 400, which completely eliminates the kinetic energy of the water droplets, avoids secondary water entry noise, and reduces noise by 10-15dB (A), thereby improving the noise reduction effect and ensuring the stability of the noise reduction effect. Specifically, the outer diameter of the silencer 100 is about 10cm, the length is about 2m, and the side spacing between adjacent silencers 100 is controlled at 5-10mm; the height of the bottom of the silencer 100 immersed in the liquid surface can be 1 / 4-1 / 3 of the outer diameter of the silencer 100; the filament is a fiber of about 1mm and has elasticity; the retaining assembly 400 is a float installed at the bottom of the mounting bracket 200.

[0026] Considering that there may be debris in the circulating water in the cooling tower, such as particulate matter or floating garbage, it will accumulate on the surface of the muffler 100 after long-term operation, increasing the load of the muffler 100 and reducing the water permeability of the muffler 100. By designing the muffler 100 as a tubular structure, and the muffler 100 and the mounting bracket 200 are rotatably connected through the rotating shaft 300, when a certain weight of debris accumulates on the surface of the muffler 100, the muffler 100 will be unbalanced and automatically rotate, so that the accumulated debris falls into the pool, thereby avoiding excessive load on the muffler 100 and ensuring the muffler 100 The ability of the muffler 100 is ensured. Among them, the debris and sediments that fall into the pool will be removed through the trash screen of the cooling tower.

[0027] like Figure 2 As shown, the mounting bracket 200 is a hollow structure, and a mounting hole 210 is provided at its end near the muffler 100. The left end of the rotating shaft 300 is inserted into the muffler 100, and the right end thereof passes through the mounting hole 210 and extends into the mounting bracket 200, and the rotating shaft 300 is rotatably matched with the mounting hole 210. The mounting bracket 200 is designed as a hollow structure to reduce the weight of the entire muffler.

[0028] like Figure 3As shown, the mounting hole 210 includes a large circular portion 211 and a narrow straight portion 212. The large circular portion 211 is disposed at the top of the narrow straight portion 212 and communicates with the narrow straight portion 212. The width of the narrow straight portion 212 is slightly larger than the diameter of the right end of the rotating shaft 300 and smaller than the diameter of the large circular portion 211. Such a design facilitates the installation and removal of the rotating shaft 300 in the mounting hole 210.

[0029] like Figure 2 As shown, a limit plate 500 is installed at the right end of the rotating shaft 300, and the diameter of the limit plate 500 is slightly smaller than the diameter of the large circular portion 211 and larger than the width of the narrow straight portion 212. The setting of the limit plate 500 prevents the rotating shaft 300 from accidentally escaping from the mounting hole 210.

[0030] During installation, the limiting plate 500 extends from the large circular portion 211 into the mounting bracket 200 , and under the action of gravity, the right end of the rotating shaft 300 enters the narrow straight portion 212 .

[0031] When in use, the entire silencer is covered with the liquid surface of the pool. After the water droplets fall to the silencer body 100, the water droplets are broken by penetrating multiple silencer layers, forming fine water droplets that fall into the pool.

[0032] Example 2

[0033] The main difference between this embodiment and embodiment 1 is that the retaining assembly 400, such as Figure 4 and Figure 5 As shown, in this embodiment, the retaining assembly 400 includes a sensor 410 and an adjustment group 420. The sensor 410 is respectively installed at the lower middle position of the left and right sides of the mounting bracket 200, and the adjustment group 420 is respectively arranged at the front and rear ends of the mounting bracket 200. The height of the bottom of the muffler 100 immersed in the liquid surface is detected in real time by the sensor 410. When the requirement is not met, the adjustment group 420 automatically adjusts the height of the entire muffler. Specifically, the sensor 410 has a maximum liquid level and a minimum liquid level. Only when the liquid level of the pool is between the minimum liquid level and the maximum liquid level, the height of the bottom of the muffler 100 immersed in the liquid surface meets the requirement. In order to reduce costs, the retaining assembly 400 can be set only on the outermost mounting bracket 200 and the middle mounting bracket 200.

[0034] like Figure 4As shown, the adjustment group 420 includes a fixed pulley 421, a rope 422, a winding drum 423 and a motor 424. The fixed pulley 421 is installed on the structural beam at the upper part of the water pool. One end of the rope 422 is connected to the end of the mounting bracket 200, and the other end thereof is wound around the fixed pulley 421 and wound in the winding drum 423. The motor 424 is installed on the wall of the cooling tower, and its output end is connected to the winding drum 423. When the liquid level of the water pool drops to the lowest level, the motor 424 drives the winding drum 423 to rotate and slowly release the rope 422, and the entire muffler drops under the action of its own gravity until the liquid level of the water pool returns to between the lowest and highest levels; when the liquid level of the water pool rises to the highest level, the motor 424 drives the winding drum 423 to rotate and slowly recycle the rope 422, driving the entire muffler to rise until the liquid level of the water pool returns to between the lowest and highest levels.

[0035] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A tubular muffler for a cooling tower, characterized in that: The invention comprises a muffler (100), a mounting bracket (200), a rotating shaft (300) and a retaining assembly (400). The muffler (100) is in plurality and arranged in a matrix array. The muffler (100) is a tubular structure. The muffler (100) comprises a muffler layer, which is formed by winding and weaving a plurality of filaments. The muffler layer is multi-layered and coaxially sleeved. The mounting bracket (200) is in plurality and arranged between opposite ends of adjacent mufflers (100). The end of the muffler (100) is rotatably connected to the mounting bracket (200) via the rotating shaft (300). The retaining assembly (400) is mounted on the mounting bracket (200) so that the bottom portion of the muffler (100) is immersed below the liquid surface.

2. The tubular muffler for a cooling tower according to claim 1, characterized in that: The mounting bracket (200) is a hollow structure, and a mounting hole (210) is provided at its end close to the muffler (100); the left end of the rotating shaft (300) is inserted into the muffler (100), and the right end thereof passes through the mounting hole (210) and extends into the mounting bracket (200); the rotating shaft (300) is rotatably matched with the mounting hole (210).

3. The tubular muffler for a cooling tower according to claim 2, characterized in that: The mounting hole (210) comprises a large circular portion (211) and a narrow straight portion (212); the large circular portion (211) is arranged at the top end of the narrow straight portion (212) and is connected to the narrow straight portion (212); the width of the narrow straight portion (212) is slightly larger than the diameter of the right end of the rotating shaft (300) and smaller than the diameter of the large circular portion (211).

4. The tubular muffler for a cooling tower according to claim 3, characterized in that: A limiting plate (500) is installed at the right end of the rotating shaft (300), and the diameter of the limiting plate (500) is slightly smaller than the diameter of the large circular portion (211) and larger than the width of the narrow straight portion (212).

5. The tubular muffler for a cooling tower according to claim 1, characterized in that: The muffler (100) has an outer diameter of about 10 cm and a length of about 2 m.

6. The tubular muffler for a cooling tower according to claim 1, characterized in that: The retaining assembly (400) is a buoy mounted on the bottom end of the mounting bracket (200).

7. The tubular muffler for a cooling tower according to claim 1, characterized in that: The retaining assembly (400) comprises a sensor (410) and an adjustment group (420), wherein the sensor (410) is respectively installed at a lower middle position on the left and right sides of the mounting bracket (200), and the adjustment group (420) is respectively arranged at the front and rear ends of the mounting bracket (200).

8. The tubular muffler for a cooling tower according to claim 7, characterized in that: The adjustment group (420) comprises a fixed pulley (421), a rope (422), a winding drum (423) and a motor (424); the fixed pulley (421) is installed on a structural beam at the upper part of the water pool; one end of the rope (422) is connected to the end of the mounting bracket (200), and the other end of the rope bypasses the fixed pulley (421) and is wound in the winding drum (423); the motor (424) is installed on the wall of the cooling tower, and the output end of the rope is connected to the winding drum (423).

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