Sound absorption and noise reduction device for cooling tower

Abstract

The utility model relates to the technical field of sound absorption and noise reduction, and discloses a sound absorption and noise reduction device for a cooling tower, which comprises a noise reduction mechanism, a connecting mechanism and reinforcing mechanisms, the connecting mechanism is positioned at the bottom end of the noise reduction mechanism, and the reinforcing mechanisms are positioned on the left side and the right side of the noise reduction mechanism; the noise reduction mechanism comprises a noise reduction box, an air outlet is formed in the top of the noise reduction box, a partition plate is fixedly connected to the inner wall of the noise reduction box, and a mounting plate is fixedly connected to the side, away from the noise reduction box, of the partition plate. By arranging the upper glass cloth and the lower glass cloth, noise enters the noise reduction box through the air inlet pipe, penetrates through the lower perforated plate and rubs with the lower glass cloth and the lower sound absorption glass wool, so that energy in the noise is consumed, the noise subjected to preliminary noise reduction enters the resonant cavity, and the noise reduction effect is improved. And irregular reflection and refraction are carried out on the surfaces of the upper glass cloth and the lower glass cloth, so that energy in noise is further consumed, and the noise reduction effect of the device is improved.

Description

Technical Field

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

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It uses the principles of evaporative heat transfer, convective heat transfer, and radiant heat transfer to dissipate waste heat generated in industry or refrigeration and air conditioning to lower the water temperature.

[0003] According to the publication number CN215413260U, a sound-absorbing and noise-reducing device for a cooling tower, when a large noise is generated at the air outlet due to the operation of the fan, the multiple sound-absorbing panels inside the first sound insulation frame can absorb the transmitted noise layer by layer, thereby preliminarily and effectively reducing the noise, and the second sound insulation frame can further intercept the noise transmitted from the first sound insulation frame. At the same time, the cooperation of the multiple first sound insulation panels and the second sound insulation panels can be used to block the noise transmitted from the surroundings of the first sound insulation frame layer by layer and reflect and weaken it, thereby further reducing the noise, improving the effect of sound absorption and noise reduction, and having high practicality.

[0004] The above-mentioned sound-absorbing panels can absorb noise layer by layer and initially and effectively reduce noise. However, when the sound-absorbing panels are used for sound absorption and noise reduction, if the noise is too loud, the energy in the working noise of the sound-absorbing panels is not easily dissipated, which can easily cause the noise reduction effect of the device to be incomplete. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a sound absorbing and noise reducing device for a cooling tower.

[0006] The utility model is implemented by the following technical scheme: a sound absorbing and noise reducing device for a cooling tower, comprising a noise reducing mechanism, a connecting mechanism and a reinforcing mechanism, wherein the connecting mechanism is located at the bottom end of the noise reducing mechanism, and the reinforcing mechanism is located at the left and right sides of the noise reducing mechanism;

[0007] The noise reduction mechanism includes a noise reduction box. An air outlet is provided at the top of the noise reduction box. A partition is fixedly connected to the inner wall of the noise reduction box. A mounting plate is fixedly connected to the side of the partition away from the noise reduction box. An upper perforated plate is fixedly connected to the inner wall of the mounting plate. An upper sound-absorbing glass wool is fixedly connected to the bottom end of the upper perforated plate. An upper glass cloth is fixedly connected to the bottom end of the upper sound-absorbing glass wool. A keel is fixedly connected to the bottom end of the upper glass cloth. A lower glass cloth is fixedly connected to the bottom end of the keel. A lower sound-absorbing glass wool is fixedly connected to the bottom end of the lower glass cloth. A lower perforated plate is fixedly connected to the bottom end of the lower sound-absorbing glass wool. A sound-absorbing plate is fixedly connected to the inner wall of the noise reduction box. A micro-perforated plate is fixedly connected to the side of the sound-absorbing plate away from the noise reduction box.

[0008] Through the above technical solution, noise enters the noise reduction box through the air inlet pipe, passes through the lower perforated plate, generates friction with the lower glass cloth and the lower sound-absorbing glass wool, and enters the resonance cavity, where it undergoes irregular reflection and refraction to improve the noise reduction effect of the device.

[0009] As a further improvement of the above solution, the number of partitions is set to two, the number of mounting plates corresponds to that of the partitions, and the shape of the mounting plate is U-shaped.

[0010] As a further improvement of the above solution, a resonance cavity is provided between the upper glass cloth and the lower glass cloth, and the keel is located inside the resonance cavity.

[0011] As a further improvement of the above solution, the connection mechanism includes an air inlet pipe, which is fixedly connected to the bottom end of the noise reduction box. A connection flange A is fixedly connected to the bottom end of the air inlet pipe. A connection bolt is slidably connected to the middle of the connection flange A. A connection flange B is slidably connected to the surface of the connection bolt. An air outlet pipe is fixedly connected to the bottom end of the connection flange B. A cooling tower is fixedly connected to the bottom end of the air outlet pipe.

[0012] As a further improvement of the above solution, the connection flange A and the connection flange B have the same shape and size, and a plurality of mounting holes are provided in the middle of the connection flange A and the connection flange B, and the connection bolt is located in the middle of the mounting holes.

[0013] As a further improvement of the above solution, the reinforcement mechanism includes a connection block A, which is fixedly connected to the top end of the cooling tower. A rotating plate A is rotatably connected to the top end of the connection block A. A connection shaft is rotatably connected to the middle of the rotating plate A. A rotating plate B is rotatably connected to the surface of the connection shaft. A connection block B is rotatably connected to the top end of the rotating plate B. A return spring is fixedly connected to the bottom end of the connection block B.

[0014] Through the above technical solution, rotating plate A and rotating plate B rotate through the connecting shaft, the reset spring is stretched, and the elastic force of the reset spring makes the connection between rotating plate A and rotating plate B stable, thereby improving the stability of the noise reduction box during use.

[0015] As a further improvement of the above solution, the return spring is located between the rotating plate A and the rotating plate B.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model arranges upper glass cloth and lower glass cloth, and the noise enters the noise reduction box through the air inlet pipe and enters the sound absorbing plate through the micro-perforated plate, and the energy in the noise is absorbed by the sound absorbing plate, and at the same time, the noise passes through the lower perforated plate and generates friction with the lower glass cloth and the lower sound-absorbing glass wool, thereby dissipating the energy in the noise, and the noise that has undergone preliminary noise reduction enters the resonance cavity and is irregularly reflected and refracted on the surfaces of the upper glass cloth and the lower glass cloth, thereby further dissipating the energy in the noise, thereby improving the noise reduction effect of the device.

[0018] The utility model fixes the connecting flange A and the connecting flange B by connecting bolts by arranging a reset spring, thereby fixing the noise reduction box on the cooling tower. At the same time, the rotating plate A and the rotating plate B rotate through the connecting shaft, and the reset spring is stretched. The elastic force of the reset spring makes the connection between the rotating plate A and the rotating plate B stable, thereby improving the stability of the noise reduction box when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the noise reduction box of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sound-absorbing panel and micro-perforated panel of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the noise reduction box of the utility model;

[0023] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure in the middle.

[0024] Description of main symbols:

[0025] Noise reduction mechanism; 101, noise reduction box; 102, air outlet; 103, partition board; 104, mounting plate; 105, upper perforated plate; 106, upper sound-absorbing glass wool; 107, upper glass cloth; 108, keel; 109, lower glass cloth; 110, lower sound-absorbing glass wool; 111, lower perforated plate; 112, sound-absorbing board; 113, micro-perforated plate; 2, connection mechanism; 201, air inlet pipe; 202, connection flange A; 203, connection bolt; 204, connection flange B; 205, air outlet pipe; 206, cooling tower; 3, reinforcement mechanism; 301, connection block A; 302, rotating plate A; 303, connecting shaft; 304, rotating plate B; 305, connection block B; 306, return spring. Detailed implementation mode

[0026] Next, in combination with the attached drawings and the specific implementation mode, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined to form new embodiments. Embodiment

[0027] Please refer to Figure 1-5 , a sound-absorbing and noise-reducing device for a cooling tower in this embodiment includes a noise reduction mechanism 1, a connection mechanism 2 and a reinforcement mechanism 3. The connection mechanism 2 is located at the bottom end of the noise reduction mechanism 1, and the reinforcement mechanism 3 is located on the left and right sides of the noise reduction mechanism 1;

[0028] The noise reduction mechanism 1 includes a noise reduction box 101. An air outlet 102 is opened at the top of the noise reduction box 101. A partition board 103 is fixedly connected to the inner wall of the noise reduction box 101. A mounting plate 104 is fixedly connected to the side of the partition board 103 away from the noise reduction box 101. An upper perforated plate 105 is fixedly connected to the inner wall of the mounting plate 104. An upper sound-absorbing glass wool 106 is fixedly connected to the bottom end of the upper perforated plate 105. An upper glass cloth 107 is fixedly connected to the bottom end of the upper sound-absorbing glass wool 106. A keel 108 is fixedly connected to the bottom end of the upper glass cloth 107. A lower glass cloth 109 is fixedly connected to the bottom end of the keel 108. A lower sound-absorbing glass wool 110 is fixedly connected to the bottom end of the lower glass cloth 109. A lower perforated plate 111 is fixedly connected to the bottom end of the lower sound-absorbing glass wool 110. A sound-absorbing board 112 is fixedly connected to the inner wall of the noise reduction box 101. A micro-perforated plate 113 is fixedly connected to the side of the sound-absorbing board 112 away from the noise reduction box 101.

[0029] The number of the partition boards 103 is set to two, and the number of the mounting plates 104 corresponds to that of the partition boards 103. The shape of the mounting plate 104 is U-shaped.

[0030] A resonance cavity is arranged between the upper glass cloth 107 and the lower glass cloth 109, and the keel 108 is located inside the resonance cavity.

[0031] The connecting mechanism 2 includes an air inlet pipe 201, which is fixedly connected to the bottom end of the noise reduction box 101. The bottom end of the air inlet pipe 201 is fixedly connected with a connecting flange A202. The middle part of the connecting flange A202 is slidably connected with a connecting bolt 203. The surface of the connecting bolt 203 is slidably connected with a connecting flange B204. The bottom end of the connecting flange B204 is fixedly connected with an air outlet pipe 205. The bottom end of the air outlet pipe 205 is fixedly connected with a cooling tower 206.

[0032] The connecting flange A202 and the connecting flange B204 have the same shape and size. A plurality of mounting holes are provided in the middle of the connecting flange A202 and the connecting flange B204, and the connecting bolts 203 are located in the middle of the mounting holes.

[0033] The reinforcement mechanism 3 includes a connecting block A301, which is fixedly connected to the top of the cooling tower 206. The top of the connecting block A301 is rotatably connected to a rotating plate A302. The middle of the rotating plate A302 is rotatably connected to a connecting shaft 303. The surface of the connecting shaft 303 is rotatably connected to a rotating plate B304. The top of the rotating plate B304 is rotatably connected to a connecting block B305. The bottom end of the connecting block B305 is fixedly connected to a return spring 306.

[0034] The return spring 306 is located between the rotating plate A 302 and the rotating plate B 304 .

[0035] The implementation principle of a sound absorption and noise reduction device for a cooling tower in the embodiment of the present application is:

[0036] The connecting flange A202 and the connecting flange B204 are fixed by the connecting bolts 203, so that the noise reduction box 101 is fixed on the cooling tower 206. At the same time, the rotating plate A302 and the rotating plate B304 are rotated by the connecting shaft 303, and the return spring 306 is stretched. The elastic force of the return spring 306 makes the connection between the rotating plate A302 and the rotating plate B304 stable, so that the cooling tower 206 and the noise reduction box 101 are reinforced. When it is needed, the noise enters the noise reduction box 101 through the air inlet pipe 201. , and enters the sound-absorbing plate 112 through the micro-perforated plate 113. The energy in the noise is absorbed by the sound-absorbing plate 112. At the same time, the noise passes through the lower perforated plate 111 and generates friction with the lower glass cloth 109 and the lower sound-absorbing glass wool 110, thereby dissipating the energy in the noise. The noise that has undergone preliminary noise reduction enters the resonance cavity and undergoes irregular reflection and refraction on the surfaces of the upper glass cloth 107 and the lower glass cloth 109, thereby further dissipating the energy in the noise, thereby improving the noise reduction effect of the device.

[0037] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A sound absorbing and noise reducing device for a cooling tower, characterized in that: It includes a noise reduction mechanism (1), a connection mechanism (2) and a reinforcement mechanism (3). The connection mechanism (2) is located at the bottom end of the noise reduction mechanism (1), and the reinforcement mechanism (3) is located on the left and right sides of the noise reduction mechanism (1). The noise reduction mechanism (1) includes a noise reduction box (101). An air outlet (102) is opened at the top of the noise reduction box (101). A partition (103) is fixedly connected to the inner wall of the noise reduction box (101). An installation plate (104) is fixedly connected to the side of the partition (103) away from the noise reduction box (101). An upper perforated plate (105) is fixedly connected to the inner wall of the installation plate (104). An upper sound-absorbing glass wool (106) is fixedly connected to the bottom end of the upper perforated plate (105). An upper glass cloth (107) is fixedly connected to the bottom end of the upper sound-absorbing glass wool (106). A keel (108) is fixedly connected to the bottom end of the upper glass cloth (107). A lower glass cloth (109) is fixedly connected to the bottom end of the keel (108). A lower sound-absorbing glass wool (110) is fixedly connected to the bottom end of the lower glass cloth (109). A lower perforated plate (111) is fixedly connected to the bottom end of the lower sound-absorbing glass wool (110). A sound-absorbing plate (112) is fixedly connected to the inner wall of the noise reduction box (101). A micro-perforated plate (113) is fixedly connected to the side of the sound-absorbing plate (112) away from the noise reduction box (101).

2. A sound absorbing and noise reducing device for a cooling tower as claimed in claim 1, characterized in that: The number of the partitions (103) is set to two, the number of the installation plates (104) corresponds to that of the partitions (103), and the shape of the installation plate (104) is U-shaped.

3. A sound absorbing and noise reducing device for a cooling tower according to claim 1, characterized in that: A resonance cavity is arranged between the upper glass cloth (107) and the lower glass cloth (109), and the keel (108) is located inside the resonance cavity.

4. A sound absorbing and noise reducing device for a cooling tower as claimed in claim 1, characterized in that: The connection mechanism (2) includes an air inlet pipe (201). The air inlet pipe (201) is fixedly connected to the bottom end of the noise reduction box (101). A connection flange A (202) is fixedly connected to the bottom end of the air inlet pipe (201). A connection bolt (203) is slidably connected to the middle of the connection flange A (202). A connection flange B (204) is slidably connected to the surface of the connection bolt (203). An air outlet pipe (205) is fixedly connected to the bottom end of the connection flange B (204). A cooling tower (206) is fixedly connected to the bottom end of the air outlet pipe (205).

5. A sound absorbing and noise reducing device for a cooling tower as claimed in claim 4, characterized in that: The connection flange A (202) and the connection flange B (204) have the same shape and size. A plurality of installation holes are arranged in the middle of the connection flange A (202) and the connection flange B (204), and the connection bolt (203) is located in the middle of the installation holes.

6. A sound absorbing and noise reducing device for a cooling tower as claimed in claim 1, characterized in that: The reinforcement mechanism (3) comprises a connection block A (301), wherein the connection block A (301) is fixedly connected to the top of the cooling tower (206), the top of the connection block A (301) is rotatably connected to a rotating plate A (302), the middle of the rotating plate A (302) is rotatably connected to a connecting shaft (303), the surface of the connecting shaft (303) is rotatably connected to a rotating plate B (304), the top of the rotating plate B (304) is rotatably connected to a connection block B (305), and the bottom of the connection block B (305) is fixedly connected to a return spring (306).

7. A sound absorbing and noise reducing device for a cooling tower as claimed in claim 6, characterized in that: The return spring (306) is located between the rotating plate A (302) and the rotating plate B (304).

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