A sound absorption and noise reduction structure for a circulating water cooling tower

Abstract

This application discloses a sound-absorbing and noise-reducing structure for a circulating water cooling tower, comprising a cooling tower body, a cooling fan, a noise-reducing component, and a flow-guiding component. The cooling fan is connected to the top of the cooling tower body. The noise-reducing component includes a noise-reducing box and mounting louvers. The noise-reducing box is installed outside the cooling fan, and a sound-absorbing cotton layer is provided on the inner wall of the noise-reducing box. The mounting louvers are located at the top of the noise-reducing box. A water distributor and a packing layer are provided in the inner cavity of the cooling tower body. The water distributor is located above the packing layer, and the flow-guiding component is located below the packing layer. The flow-guiding component includes several guide rods, which are inclined and their tops extend to the bottom of the packing layer. This application has the effect of reducing the noise generated by the cooling tower during operation.

Description

Technical Field

[0001] This application relates to the technical field of circulating water cooling towers, and in particular to a sound-absorbing and noise-reducing structure for circulating water cooling towers. Background Technology

[0002] A circulating water cooling tower is a device that lowers water temperature through heat and moisture exchange between water and air. It is widely used in industrial sectors requiring circulating water cooling, such as power generation, chemical processing, HVAC, and data centers. Its core function is to discharge waste heat into the atmosphere and maintain the stable operation of the circulating water system.

[0003] Currently, the principle of circulating water cooling towers is to transport high-temperature water to the top of the tower, where a water distribution structure sprays the hot water down. A cooling fan at the top of the tower draws cool air into the tower to exchange heat with the hot water, thus lowering the temperature. The packing layer in the cooling tower is located below the water distribution structure, and the packing layer comes into contact with the water flow, increasing the contact area, extending the contact time, and promoting evaporation.

[0004] Regarding the aforementioned technologies, the inventors believe that during the operation of the cooling tower, the water passing through the packing layer and falling to the bottom of the cooling tower will generate noise. In addition, the cooling fan will also generate noise when it is working, causing noise pollution to the working environment. Utility Model Content

[0005] In order to reduce the noise generated during the operation of a cooling tower, this application provides a sound-absorbing and noise-reducing structure for a circulating water cooling tower.

[0006] The sound-absorbing and noise-reducing structure for circulating water cooling towers provided in this application adopts the following technical solution: A sound-absorbing and noise-reducing structure for a circulating water cooling tower includes a cooling tower body, a cooling fan, a noise-reducing component, and a flow-guiding component. The cooling fan is connected to the top of the cooling tower body. The noise-reducing component includes a noise-reducing box and mounting louvers. The noise-reducing box is installed outside the cooling fan. A sound-absorbing cotton layer is provided on the inner wall of the noise-reducing box. The mounting louvers are located at the top of the noise-reducing box. A water distributor and a packing layer are provided in the inner cavity of the cooling tower body. The water distributor is located above the packing layer. The flow-guiding component is located below the packing layer. The flow-guiding component includes several flow-guiding rods, which are inclined and extend to the bottom of the packing layer.

[0007] By adopting the above technical solution, when the cooling tower is operating, the noise reduction box is installed outside the cooling fan. The sound-absorbing cotton layer inside the noise reduction box absorbs the noise generated by the cooling fan during operation, reducing the noise level. Water flowing through the packing layer flows downwards at an angle along the guide rod, preventing the water from falling directly vertically to the bottom of the cooling tower and generating noise, further reducing the noise generated during cooling tower operation. Through the coordinated operation of the cooling tower body, cooling fan, noise reduction components, and guide components, the noise generated during cooling tower operation is effectively reduced.

[0008] Optionally, the guide rod has several guide grooves on the side near the packing layer. One end of the guide groove extends to the top edge of the guide rod, and the other end extends to the bottom edge of the guide rod. The guide groove is wavy.

[0009] By adopting the above technical solution, the water flows along the wave-shaped guide channel on the guide rod. The guide channel guides the water flow and reduces the speed of the water flow, further reducing the noise generated during the water flow process.

[0010] Optionally, the flow guiding assembly further includes a support groove, a connecting pipe, and an abutment plate. The top of the support groove is open and is located below the flow guiding rod. The connecting pipe is connected to the bottom of the support groove, and the abutment plate is located at the bottom of the connecting pipe. The connecting pipe is provided with a sealing element for controlling the opening and closing of the abutment plate.

[0011] By adopting the above technical solution, the water flowing through the guide rod flows along the inner wall of the support trough for collection. When the water in the support trough accumulates to a certain amount, the abutment plate opens under the action of the sealing component, directly discharging the water in the support trough to the bottom of the cooling tower, further reducing the noise generated during the water flow process.

[0012] Optionally, the sealing component includes a sliding tube, a mounting rod, and a return spring. The sliding tube is slidably disposed within the inner cavity of the connecting tube, and its bottom end is connected to the abutment plate. A sliding groove is provided along the length direction on the outer wall of the sliding tube. A slider is connected to the inner wall of the connecting tube and is slidably disposed within the sliding groove. The mounting rod is connected to the connecting tube. One end of the return spring is connected to the mounting rod, and the other end is connected to the abutment plate. A first water outlet is provided on the sliding tube, and a second water outlet is provided on the connecting tube. In its natural state, the abutment plate is pressed against the bottom end of the connecting tube under the action of the return spring. At this time, the first water outlet and the second water outlet are staggered. When the slider slides to the top of the sliding groove, the first water outlet and the second water outlet are connected.

[0013] By adopting the above technical solution, under natural conditions, the abutment plate seals the bottom end of the connecting pipe under the action of the return spring. When the water in the support tank accumulates to a certain level, the abutment plate moves downward under the gravity of the water in the support tank, the return spring extends, and the slider guides the movement of the sliding pipe. When the first water outlet and the second water outlet are aligned and connected, the water in the support tank and the connecting pipe is directly discharged to the bottom of the cooling tower body, reducing the noise generated during drainage. When the water in the support tank decreases to a certain amount, the abutment plate moves upward under the action of the return spring to reseal the bottom end of the connecting pipe.

[0014] Optionally, the installation louver is provided with a plurality of spiral noise-reducing louvers, which are arranged in a spiral shape, and adjacent spiral noise-reducing louvers are staggered in height.

[0015] By adopting the above technical solution, the spiral noise reduction louvers are arranged in a spiral shape and adjacent spiral noise reduction louvers are staggered to form an irregular flow channel, which blocks and consumes sound waves, further reducing the possibility of noise propagating to the outside world.

[0016] Optionally, a sound-absorbing plate is provided on the side of the sound-absorbing cotton layer away from the noise reduction box, and the sound-absorbing plate is provided with a plurality of sound-absorbing holes.

[0017] By adopting the above technical solution, several sound-absorbing holes on the sound-absorbing panel absorb sound waves simultaneously, reducing the possibility of noise propagating to the outside.

[0018] Optionally, a damping frame is provided at the top of the cooling tower body, and noise reduction boxes are spaced above the cooling tower body. A damping block is connected to the bottom of the noise reduction box, and a damping rod is connected between the damping block and the damping frame. A damping spring is provided on the damping rod, and the two ends of the damping spring are respectively connected to the damping block and the damping frame.

[0019] By adopting the above technical solution, the damping rod is set between the noise reduction box and the cooling tower body to consume the vibration potential energy of the noise reduction box, which can reduce the possibility of resonance between the noise reduction box and the cooling tower body leading to increased noise.

[0020] Optionally, the bottom of the noise reduction box is provided with a connection port for accommodating the cooling fan, and a shock-absorbing rubber ring is provided on the inner wall of the connection port, which is fitted to the cooling fan.

[0021] By adopting the above technical solution, the installation of the shock-absorbing rubber ring reduces the possibility that the vibration generated by the cooling fan during operation will be directly transmitted to the noise reduction box, causing resonance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated operation of the cooling tower body, cooling fan, noise reduction components, and airflow guiding components, the noise generated during the operation of the cooling tower is reduced; 2. The installation of sealing components and abutment plates allows water in the support trough to be discharged directly to the bottom of the cooling tower, further reducing the noise generated during water flow; 3. The installation of the shock-absorbing rubber ring reduces the possibility that the vibration generated by the cooling fan during operation will be directly transmitted to the noise reduction box, causing resonance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating a sound-absorbing and noise-reducing structure for a circulating water cooling tower, as shown in the embodiments of this application.

[0024] Figure 2 This is a partial sectional view used in the embodiments of this application to illustrate the internal structure of the cooling tower body.

[0025] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0026] Figure 4 yes Figure 1 Enlarged view of section B in the middle.

[0027] Figure 5 This is a partial cross-sectional view used in the embodiments of this application to illustrate the internal structure of the connecting pipe.

[0028] Explanation of reference numerals in the attached drawings: 1. Cooling tower body; 2. Noise reduction component; 21. Noise reduction box; 22. Sound-absorbing cotton layer; 23. Installation louvers; 231. Spiral noise reduction louvers; 24. Damping block; 25. Damping rod; 26. Damping frame; 27. Vibration damping spring; 3. Flow guiding component; 31. Flow guiding rod; 311. Flow guiding channel; 32. Connecting frame; 33. Connecting rod; 34. Supporting groove; 35. Connecting pipe; 351. Sliding groove; 352. Second water outlet; 36. Sliding pipe; 361. First water outlet; 37. Abutment plate; 38. Mounting rod; 39. Return spring; 4. Cooling fan; 5. Water distributor; 6. Packing layer; 7. Vibration damping rubber ring; 8. Sound-absorbing layer; 9. Sound-absorbing panel; 91. Sound-absorbing hole; 10. Sliding block; 11. Water inlet pipe; 12. Air inlet window. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be further described in detail below. Embodiments of this application provide a sound-absorbing and noise-reducing structure for a circulating water cooling tower, which has the effect of reducing the noise generated during the operation of the cooling tower.

[0030] Reference Figure 1 and Figure 2A sound-absorbing and noise-reducing structure for a circulating water cooling tower includes a cooling tower body 1, a noise-reducing component 2, and a flow-guiding component 3. A cooling fan 4 is installed at the top of the cooling tower body 1, and a water distributor 5 and a packing layer 6 are installed inside the cooling tower body 1, with the packing layer 6 located below the water distributor 5.

[0031] Reference Figure 3 and Figure 4 The noise reduction component 2 includes a noise reduction box 21, a sound-absorbing cotton layer 22, mounting louvers 23, a damping block 24, a damping rod 25, a damping frame 26, and a damping spring 27. The noise reduction box 21 is installed outside the cooling fan 4, with a gap between the noise reduction box 21 and the cooling tower body 1. The noise reduction box 21 has a connection port for accommodating the cooling fan 4, and a damping rubber ring 7 that abuts against the outer wall of the cooling fan 4 is connected to the inner ring wall of the connection port. The mounting louvers 23 are installed at the top of the noise reduction box 21, and have several spiral noise reduction louvers 231 arranged in a spiral twisted shape. A sound-absorbing layer 8 for sound absorption is connected to one side of each spiral noise reduction louver 231. Adjacent spiral noise reduction louvers 231 are staggered in vertical height. A sound-absorbing cotton layer 22 is connected to the inner wall of the noise reduction box 21. A sound-absorbing plate 9 is connected to the inner wall of the sound-absorbing cotton layer 22 away from the noise reduction box 21. The sound-absorbing plate 9 has several sound-absorbing holes 91. A damping block 24 is connected to the bottom surface of the noise reduction box 21, a damping frame 26 is connected to the top surface of the cooling tower body 1, and a damping rod 25 is vertically connected between the damping frame 26 and the damping block 24. The damping rod 25 includes a connecting sleeve and a connecting slide rod slidably disposed therein. Compressed inert gas is injected into the connecting sleeve. The connecting sleeve is connected to the bottom surface of the damping block 24, and the bottom end of the connecting slide rod is connected to the top surface of the damping frame 26. A damping spring 27 is sleeved on the outside of the damping rod 25. One end of the damping spring 27 is connected to the damping block 24, and the other end is connected to the damping frame 26.

[0032] Reference Figure 2 and Figure 5 The flow guiding assembly 3 is disposed in the cooling tower body 1 and located below the packing layer 6. The flow guiding assembly 3 includes a flow guiding rod 31, a connecting frame 32, a connecting rod 33, a support groove 34, a connecting pipe 35, a sliding pipe 36, an abutment plate 37, a mounting rod 38, and a return spring 39. Several flow guiding rods 31 are inclinedly arranged on the bottom surface of the packing layer 6. The connecting frame 32 is horizontally arranged in the cooling tower body 1. One end of the connecting rod 33 is connected to the connecting frame 32, and the other end is connected to the inner wall of the cooling tower body 1. The connecting frame 32 is connected to the flow guiding rod 31. The support groove 34 is disposed below the flow guiding rod 31. The top end of the support groove 34 is open, and the bottom end of the flow guiding rod 31 extends to the side of the vertical inner wall of the support groove 34. Several wavy flow guiding grooves 311 are formed on the flow guiding rod 31. One end of the flow guiding groove 311 extends to the top end of the flow guiding rod 31, and the other end extends to the bottom end of the flow guiding rod 31.

[0033] Reference Figure 2 and Figure 5 The bottom end of the support groove 34 is set in an inverted cone shape, and the connecting pipe 35 is connected to the bottom end of the support groove 34. The sliding pipe 36 is slidably disposed in the connecting pipe 35, and the abutment plate 37 is connected to the bottom end of the sliding pipe 36. The sliding groove 351 is axially formed on the side wall of the sliding pipe 36, and the sliding block 10 is provided on the inner wall of the connecting pipe 35, and the sliding block 10 is slidably disposed in the sliding groove 351. Several first water outlet holes 361 are formed on the sliding pipe 36, and several second water outlet holes 352 are formed on the connecting pipe 35. The mounting rod 38 is horizontally connected to the top end of the connecting pipe 35, and one end of the return spring 39 is connected to the mounting rod 38, and the other end is connected to the abutment plate 37. In the natural state, the abutment plate 37 blocks the bottom end of the connecting pipe 35 under the action of the return spring 39, and the positions of the first water outlet holes 361 and the second water outlet holes 352 are staggered. When the sliding tube 36 moves downward and the sliding block 10 moves to the top of the sliding groove 351, the first water outlet 361 and the second water outlet 352 are connected. A water inlet pipe 11 is connected to the cooling tower body 1, and the connection between the water inlet pipe 11 and the cooling tower body 1 is located between the packing layer 6 and the support groove 34. An air inlet window 12 is connected to the cooling tower body 1, and the connection between the air inlet window 12 and the cooling tower body 1 is located between the packing layer 6 and the support groove 34.

[0034] Reference Figure 2-4 When the cooling tower is operating, the cooling fan 4 starts. The sound-absorbing cotton layer 22 in the noise reduction box 21 and the sound-absorbing holes 91 on the sound-absorbing plate 9 absorb the noise generated by the cooling fan 4 during operation, reducing the noise generated by the cooling fan 4. Several spiral damping springs 27 are spirally twisted, forming several irregularly shaped openings at the open end of the noise reduction box 21, which dissipate and absorb sound waves. The sound-absorbing layer 8 set on the spiral noise-reducing louvers 231 absorbs sound waves, further reducing the noise generated in the cooling fan 4. The setting of the damping rubber ring 7 reduces the possibility of synchronous vibration of the noise reduction box 21 under the action of the cooling fan 4. The damping rod 25, damping block 24 and damping frame 26 dissipate the energy generated by the vibration of the noise reduction box 21, and the damping springs 27 buffer the vibration of the noise reduction box 21, which helps to further reduce the possibility of vibration of the noise reduction box 21.

[0035] Reference Figure 2 and Figure 5Water flowing through the packing layer 6 flows downwards along the inclined guide plates, preventing water droplets from falling directly to the bottom of the cooling tower body 1 and generating noise. The wavy guide grooves 311 on the guide rod 31 guide the water flow, extending the residence time and velocity of the water on the guide rod 31, further reducing the noise generated when the water flows on the guide rod 31. Water flowing through the guide rod 31 flows along the inner wall of the support groove 34 and accumulates there.

[0036] Reference Figure 5 When the water level in the support trough 34 reaches a certain height, the sliding pipe 36 slides downward under the gravity of the accumulated water, and the sliding block 10 slides in the sliding groove 351. When the sliding block 10 slides to the top of the sliding groove 351, the first water outlet 361 and the second water outlet 352 are connected. At this time, the water in the support trough 34 and the connecting pipe 35 flows directly to the bottom of the cooling tower through the first water outlet 361 and the second water outlet 352, avoiding the continuous flow of water from the support trough 34 into the bottom of the cooling tower and the generation of noise during the cooling process. After the water level in the support trough 34 drops, the sliding cylinder moves upward to reset under the action of the return spring 39. At this time, the positions of the first water outlet 361 and the second water outlet 352 are staggered, and the bottom end of the connecting pipe 35 is re-sealed by the abutment plate 37.

[0037] The implementation principle of a sound-absorbing and noise-reducing structure for a circulating water cooling tower in this application embodiment is as follows: When the cooling tower is working, the cooling fan 4 starts, and the sound-absorbing cotton layer 22 in the noise reduction box 21 and the several sound-absorbing holes 91 on the sound-absorbing plate 9 absorb the noise generated by the cooling fan 4 during operation, thereby reducing the noise generated by the cooling fan 4 during operation. The damping rod 25, damping block 24, and damping frame 26 dissipate the energy generated by the vibration of the noise reduction box 21, and the damping spring 27 buffers the vibration of the noise reduction box 21, which helps to further reduce the possibility of vibration of the noise reduction box 21.

[0038] Water flowing through the packing layer 6 flows downwards along the inclined guide plate. The wavy guide groove 311 on the guide rod 31 guides the water flow, prolonging the residence time and flow velocity of the water on the guide rod 31, which helps to reduce the noise generated when the water flows on the guide rod 31. Water flowing through the guide rod 31 flows along the inner wall of the support groove 34 and accumulates in the support groove 34.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sound-absorbing and noise-reducing structure for circulating water cooling towers, characterized in that: The cooling tower includes a cooling tower body (1), a cooling fan (4), a noise reduction component (2), and a flow guiding component (3). The cooling fan (4) is connected to the top of the cooling tower body (1). The noise reduction component (2) includes a noise reduction box (21) and mounting louvers (23). The noise reduction box (21) is installed outside the cooling fan (4). The inner wall of the noise reduction box (21) is provided with a sound-absorbing cotton layer (22). The mounting louvers (23) are installed on the cooling tower body (1). At the top of the noise reduction box (21), a water distributor (5) and a packing layer (6) are provided in the inner cavity of the cooling tower body (1). The water distributor (5) is located above the packing layer (6), and the flow guiding component (3) is located below the packing layer (6). The flow guiding component (3) includes several flow guiding rods (31). The flow guiding rods (31) are inclined and the top of the flow guiding rods (31) extends to the bottom of the packing layer (6).

2. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 1, characterized in that: The guide rod (31) has several guide grooves (311) on one side near the packing layer (6). One end of the guide groove (311) extends to the top edge of the guide rod (31), and the other end extends to the bottom edge of the guide rod (31). The guide groove (311) is wavy.

3. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 2, characterized in that: The flow guiding assembly (3) also includes a support groove (34), a connecting pipe (35), and an abutment plate (37). The top of the support groove (34) is open. The support groove (34) is located below the flow guiding rod (31). The connecting pipe (35) is connected to the bottom of the support groove (34). The abutment plate (37) is located at the bottom of the connecting pipe (35). The connecting pipe (35) is provided with a sealing element for controlling the opening and closing of the abutment plate (37).

4. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 3, characterized in that: The sealing component includes a sliding tube (36), a mounting rod (38), and a return spring (39). The sliding tube (36) is slidably disposed in the inner cavity of the connecting tube (35). The bottom end of the sliding tube (36) is connected to the abutment plate (37). A sliding groove (351) is provided on the outer wall of the sliding tube (36) along the length direction. A slider is connected to the inner wall of the connecting tube (35) and is slidably disposed in the sliding groove (351). The mounting rod (38) is connected to the connecting tube (35). One end of the return spring (39) is connected to the mounting rod (37). The rod (38) is connected to the other end, and the abutment plate (37) is connected to the other end. The sliding tube (36) has a first water outlet (361), and the connecting tube (35) has a second water outlet (352). In the natural state, the abutment plate (37) is pressed against the bottom end of the connecting tube (35) under the action of the return spring (39). At this time, the first water outlet (361) and the second water outlet (352) are staggered. When the slider slides to the top of the groove, the first water outlet (361) and the second water outlet (352) are connected.

5. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 1, characterized in that: The installation louver (23) is provided with a plurality of spiral noise reduction louvers (231), which are spirally arranged, and adjacent spiral noise reduction louvers (231) are staggered in height.

6. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 1, characterized in that: The sound-absorbing cotton layer (22) is provided with a sound-absorbing plate (9) on the side away from the noise reduction box (21), and the sound-absorbing plate (9) is provided with a plurality of sound-absorbing holes (91).

7. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 1, characterized in that: A damping frame (26) is provided at the top of the cooling tower body (1), and noise reduction boxes (21) are spaced above the cooling tower body (1). A damping block (24) is connected to the bottom of the noise reduction box (21), and a damping rod (25) is connected between the damping block (24) and the damping frame (26). A damping spring (27) is provided on the damping rod (25), and the two ends of the damping spring (27) are respectively connected to the damping block (24) and the damping frame (26).

8. The sound-absorbing and noise-reducing structure for a circulating water cooling tower according to claim 7, characterized in that: The bottom of the noise reduction box (21) is provided with a connection port for accommodating the heat dissipation fan (4). A shock-absorbing rubber ring (7) is provided on the inner wall of the connection port, and the shock-absorbing rubber ring (7) is fitted to the heat dissipation fan (4).

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