Ventilation and noise reduction device of vertical air cooler and installation method of ventilation and noise reduction device

Abstract

The invention relates to the technical field of air coolers, in particular to a ventilation and noise reduction device of a vertical air cooler and a mounting method thereof, and the ventilation and noise reduction device comprises a double-layer sound absorption and insulation wall, an air inlet silencer, an air exhaust silencer and a steel structure support; the double-layer sound absorption and insulation walls are arranged on the two sides of the steel structure support, the steel structure support is erected outside the air cooler, and the steel structure support is used for installing the double-layer sound absorption and insulation walls, the air inlet silencer and the air exhaust silencer. The double-layer sound absorption and insulation wall comprises an inner layer sound absorption and insulation board and an outer layer sound absorption and insulation board, the inner layer sound absorption and insulation board is fixed to the inner side of the steel structure support, and the outer layer sound absorption and insulation board is fixed to the outer side of the steel structure support. A steel structure support is built outside the air cooler, a double-layer sound absorption and insulation wall, an air inlet silencer and an air exhaust silencer are installed on the steel structure support, and according to the sound spectrum characteristics of a noise source, the structures of an inner layer sound absorption and insulation plate, an outer layer sound absorption and insulation plate, the air inlet silencer and the air exhaust silencer are designed. And the intensity of noise output by the air cooler outwards is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air coolers, and in particular to a ventilation and noise reduction device for a vertical air cooler and an installation method thereof. Background Art

[0002] During the natural gas boosting and production expansion process, air coolers are often located near perimeter walls due to site layout constraints. Pipeline natural gas, after being pressurized by the compressor, is discharged into the air cooler for cooling to ensure that the intake pressure and temperature of the next stage of the compressor cylinder are within the rated intake pressure and temperature range. Natural gas compressors typically have four cylinders, capable of four pressurization stages. After each stage of pressurization, the natural gas enters the air cooler for cooling and pressure reduction. Vertical air coolers are equipped with heat-dissipating axial flow fans. Cold air flows in from below the fan and, as it flows through the heat exchange tube fins above the fan, exchanges heat with the natural gas within these tube fins, transforming into hot air that is discharged upward.

[0003] Noise intensity of vertical air cooler L A =89.5dB(A), L C =80.5dB(C), see Figure 1 The noise spectrum of a vertical air cooler is shown below. It is broadband, with prominent low- and medium-frequency noise and strong penetration. At a frequency of 250Hz, the sound intensity is 67.3dB; at a frequency of 1000Hz, the sound intensity is 71.6dB; and at a frequency of 2kHz, the sound intensity is 68.3dB. Placing an air cooler near a surrounding wall can easily cause excessive ambient noise levels. This can also adversely affect the health of personnel working around the air cooler during extended periods of time performing inspection and maintenance.

[0004] Most of the existing vertical air cooler noise reduction methods only consider the compliance of environmental noise standards, without considering the noise intensity to which job personnel are exposed. After the ventilation and silencer device semi-encloses the air cooler, the reflected sound inside it becomes louder, the internal noise intensity becomes higher, and the noise intensity to which job personnel are exposed becomes higher, which is not conducive to the health of job personnel.

[0005] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this technical field. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the ventilation and silencer device of the existing vertical air cooler semi-encloses the air cooler, which increases the reflected sound inside the air cooler and is detrimental to the health of the personnel on duty.

[0007] The present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a vertical air cooler ventilation noise reduction device, comprising: a double-layer sound-absorbing and sound-insulating wall 1, an air inlet muffler 2, an exhaust muffler 3, and a steel structure support 4; the steel structure support 4 is erected on the outside of the air cooler 5, and the steel structure support 4 is used to install the double-layer sound-absorbing and sound-insulating wall 1, the air inlet muffler 2, and the exhaust muffler 3;

[0009] The double-layer sound-absorbing and sound-insulating wall 1 includes an inner sound-absorbing and sound-insulating board 10 and an outer sound-insulating board 11 . The inner sound-absorbing and sound-insulating board 10 is fixed to the inner side of the steel structure support 4 , and the outer sound-insulating board 11 is fixed to the outer side of the steel structure support 4 .

[0010] Preferably, the steel structure support 4 includes an air inlet end support 40, an air exhaust end support 41 and a purlin support 42, and the device further includes a base 8, the bottom of the air inlet end support 40 and the air exhaust end support 41 are fixedly connected to the base 8, the air inlet end support 40 is arranged on one side of the air exhaust end support 41, and the air exhaust end support 41 is erected on the outside of the air cooler 5; the purlin support 42 is fixedly arranged in the middle of the air exhaust end support 41, and is lower than the top of the air exhaust end support 41; the air inlet muffler 2 is fixedly arranged on the air inlet end support 40, and the exhaust muffler 3 is fixedly arranged on the exhaust end support 41, the air inlet end support 40 is set at a preset distance lower than the exhaust end support 41, and the air inlet end support 40 and the exhaust end support 41 are connected to each other;

[0011] The vertical air cooler ventilation and noise reduction device further includes a cold air and hot air separation plate, which is fixedly arranged on the purlin bracket 42.

[0012] Preferably, the air cooler 5 is provided with an air inlet 50 and an air outlet 51, the air inlet 50 is provided on the side of the air cooler 5, and the air outlet 51 is provided on the top of the air cooler 5; the height of the exhaust end bracket 41 is higher than the air cooler 5, the exhaust muffler 3 is fixedly provided on the top of the exhaust end bracket 41, and the exhaust muffler 3 is provided above the exhaust outlet 51; the air inlet end bracket 40 is provided below the exhaust outlet 51, the air inlet muffler 2 is fixedly provided on the top of the air inlet end bracket 40, and the purlin bracket 42 is provided below the exhaust outlet 51.

[0013] Preferably, the inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11 are arranged on the side surfaces of the air inlet bracket 40 and the air outlet bracket 41 .

[0014] Preferably, the double-layer sound-absorbing and sound-insulating wall 1 further comprises rock wool, the inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11 are fixed on the air inlet end bracket 40 and the air outlet end bracket 41 via keels, and the rock wool is filled between the inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11.

[0015] Preferably, the thickness of the rock wool is 150 mm ± 2 mm and the density is 120 kg / m 3 .

[0016] Preferably, the air inlet muffler 2 and the exhaust muffler 3 are provided with a microporous muffler sheet 30, and the structure of the microporous muffler sheet 30 includes, arranged from top to bottom in sequence, a first galvanized microporous plate 300, a first weather-resistant waterproof cloth 301, ultra-fine glass wool 302, a galvanized keel 303, a second weather-resistant waterproof cloth 304, and a second galvanized microporous plate 305;

[0017] The overall thickness of the microporous sound-absorbing sheet 30 is 200 mm ± 2 mm, the width is 2250 mm ± 2 mm, and the height is 2000 mm ± 2 mm. The thickness of the first galvanized microporous plate 300 and the second galvanized microporous plate 305 are 2 mm ± 0.1 mm, the perforation diameter is 0.8 mm ± 0.1 mm, and the perforation rate is 43% ± 1%. The bulk density of the ultra-fine glass wool 302 is 48 kg / m 3 .

[0018] Preferably, the inner layer sound-absorbing and sound-insulating board 10 has a thickness of 25 mm ± 0.1 mm and includes a spray-coated anti-corrosion layer, a porous board, a first glass fiber cloth, a reinforcing rib, rock wool, and a galvanized steel board arranged in sequence from the outer layer to the inner layer, and the opening rate of the inner layer porous board is greater than or equal to 40%;

[0019] When the inner porous plate is made of the porous galvanized plate, the thickness of the inner sound-absorbing and sound-insulating plate 10 is 1 mm ± 0.1 mm;

[0020] When the inner porous plate is made of the porous coated aluminum plate, the thickness of the inner sound-absorbing and sound-insulating plate 10 is 0.35 mm±0.1 mm.

[0021] Preferably, the outer sound insulation board 11 includes a spray-coated anti-corrosion layer 110, a first galvanized steel plate 111, a first glass fiber cloth 112, a first rock wool 113, a second glass fiber cloth 114 and a second galvanized steel plate 115, which are arranged in sequence from the outer layer to the inner layer.

[0022] The thickness of the first galvanized steel plate 111 is 0.6 mm ± 0.1 mm, the thickness of the first rock wool 113 is 29 mm ± 1 mm, and the thickness of the second galvanized steel plate 115 is 0.6 mm ± 0.1 mm.

[0023] In a second aspect, the present invention provides a method for installing a vertical air cooler ventilation and noise reduction device, which is applicable to the vertical air cooler ventilation and noise reduction device described in the first aspect, comprising:

[0024] The steel structure support 4 is erected outside the air cooler 5;

[0025] The inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11 are fixedly mounted on the steel support 4 .

[0026] The air inlet muffler 2 and the air exhaust muffler 3 are fixedly mounted on the steel structure support 4 .

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: by building a steel structure support 4 outside the air cooler 5, installing a double-layer sound-absorbing and sound-insulating wall 1, an air inlet muffler 2, and an exhaust muffler 3 on the steel structure support 4, analyzing the sound spectrum characteristics of the noise source from the perspectives of sound absorption, sound insulation, sound elimination, and safety, and designing the structures of the inner sound-absorbing and sound-insulating board 10 and the outer sound insulation board 11, as well as the air inlet muffler 2 and the exhaust muffler 3, the intensity of the noise output to the outside of the air cooler 5 is reduced, the impact of excessive noise from the air cooler 5 on the health of personnel on duty is alleviated, and the environmental noise is brought up to the specified standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 Schematic diagram of a noise spectrum of a vertical air cooler provided by an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of a vertical air cooler ventilation and noise reduction device provided by an embodiment of the present invention;

[0031] Figure 3 Schematic diagram of a steel structure support of a vertical air cooler ventilation and noise reduction device provided by an embodiment of the present invention;

[0032] Figure 4 Schematic diagram of an inner sound-absorbing and sound-insulating panel and an outer sound-absorbing and sound-insulating panel of a vertical air cooler ventilation noise reduction device provided by an embodiment of the present invention;

[0033] Figure 5 This is a side view of an air cooler of a vertical air cooler ventilation and noise reduction device provided by an embodiment of the present invention;

[0034] Figure 6 Schematic diagram of the structure of an outer sound-absorbing and sound-insulating panel of a vertical air cooler ventilation and noise reduction device provided by an embodiment of the present invention;

[0035] Figure 7 Schematic diagram of a microporous muffler sheet of a vertical air cooler ventilation noise reduction device provided by an embodiment of the present invention;

[0036] Figure 8 Schematic diagram of a first sound insulation door and a second sound insulation door of a vertical air cooler ventilation noise reduction device provided by an embodiment of the present invention;

[0037] Figure 9 The present invention provides a schematic diagram of the use of a vertical air cooler ventilation and noise reduction device.

[0038] Wherein, the accompanying drawings are marked as follows:

[0039] 1-Double-layer sound-absorbing and sound-insulating wall, 10-Inner sound-absorbing and sound-insulating board, 11-Outer sound-absorbing and sound-insulating board, 110-Sprayed anti-corrosion layer, 111-First galvanized steel plate, 112-First glass fiber cloth, 113-First rock wool, 114-Second glass fiber cloth, 115-Second galvanized steel plate, 12-First sound insulation door, 13-Second sound insulation door, 2-Inlet muffler, 3-Exhaust muffler, 30-Microporous muffler Sound sheet, 300-first galvanized microporous plate, 301-first weather-resistant waterproof cloth, 302-ultra-fine glass wool, 303-galvanized keel, 304-second weather-resistant waterproof cloth, 305-second galvanized microporous plate, 4-steel structure support, 40-air inlet end support, 41-exhaust end support, 42-purlin support, 5-air cooler, 50-air inlet, 51-exhaust outlet, 6-walkway, 7-heat dissipation tube bundle fins. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as meaning open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.

[0042] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0043] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, for example, the description may also use the method of adding "A" and "B" at the end to describe the same type of nouns as two independent individuals. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the description purposes of the same type of individuals, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0044] When describing some embodiments, the expressions “coupled”, “coupled” and “connected” and their derivatives may be used. For example, when describing some embodiments, the term “connected” may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term “coupled” may be used to indicate that two or more components are in direct physical or electrical contact. However, the term “connected” or “coupled” may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other, such as “optical coupling”, “wireless connection”, etc. The embodiments disclosed herein are not necessarily limited to the contents of the present invention.

[0045] In the description of the present invention, the expression "A and / or B" (where A and B are used to formally represent specific characteristic contents) will be involved, and the corresponding expressions include the following three combinations: only A, only B, and a combination of A and B.

[0046] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0047] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Embodiment 1:

[0049] Embodiment 1 of the present invention provides a vertical air cooler ventilation noise reduction device, such as Figure 2 and Figure 3 As shown, it includes: a double-layer sound-absorbing and sound-insulating wall 1, an air inlet muffler 2, an exhaust muffler 3 and a steel structure bracket 4; the steel structure bracket 4 is erected on the outside of the air cooler 5, and the steel structure bracket 4 is used to install the double-layer sound-absorbing and sound-insulating wall 1, the air inlet muffler 2 and the exhaust muffler 3; as shown Figure 4 As shown, the double-layer sound-absorbing and sound-insulating wall 1 includes an inner sound-absorbing and sound-insulating board 10 and an outer sound-insulating board 11 . The inner sound-absorbing and sound-insulating board 10 is fixed to the inner side of the steel structure support 4 , and the outer sound-insulating board 11 is fixed to the outer side of the steel structure support 4 .

[0050] By constructing a steel structure support 4 outside the air cooler 5, installing a double-layer sound-absorbing and sound-insulating wall 1, an air inlet muffler 2, and an exhaust muffler 3 on the steel structure support 4, and analyzing the sound spectrum characteristics of the noise source from the perspectives of sound absorption, sound insulation, sound elimination, and safety, the structures of the inner sound-absorbing and sound-insulating panel 10 and the outer sound insulation panel 11, as well as the air inlet muffler 2 and the exhaust muffler 3 are designed respectively. This reduces the impact of the noise from the air cooler 5 on the health of personnel on duty and ensures that the environmental noise meets the specified standards.

[0051] In order to fully explain the ventilation and noise reduction device for the air cooler 5 provided in this solution, the detailed structure mentioned in the above solution will be further explained in detail below.

[0052] In the above scheme, it is mentioned that the double-layer sound-absorbing and sound-insulating wall 1 is arranged on the outside of the steel structure support 4, and the steel structure support 4 is erected on the outside of the air cooler 5. The steel structure support 4 is used to install the double-layer sound-absorbing and sound-insulating wall 1, the air inlet muffler 2 and the exhaust muffler 3. Since the air inlet 50 and the air outlet 51 of the air cooler 5 are located in two different positions, at the same time, a certain position difference is required between the air inlet muffler 2 and the exhaust muffler 3 to ensure that the high-temperature gas coming out of the exhaust muffler 3 will not enter the air cooler 5 again through the air inlet muffler 2. Based on this, Figure 3 As shown, the steel structure support 4 includes an air inlet end support 40, an air exhaust end support 41 and a purlin support 42, and the device also includes a base 8, the bottom of the air inlet end support 40 and the exhaust end support 41 are fixedly connected to the base 8, the air inlet end support 40 is arranged on one side of the exhaust end support 41, and the exhaust end support 41 is erected on the outside of the air cooler 5; the purlin support 42 is fixedly arranged in the middle of the exhaust end support 41, and is lower than the top of the exhaust end support 41; the air inlet muffler 2 is fixedly arranged on the air inlet end support 40, and the exhaust muffler 3 is fixedly arranged on the exhaust end support 41, and the air inlet end support 40 is set at a preset distance lower than the exhaust end support 41, and the air inlet end support 40 and the exhaust end support 41 are connected to each other; wherein, the preset distance can be 1.5m~1.8m. Since the air inlet end bracket 40 and the air exhaust end bracket 41 are interconnected, in order to prevent the hot air discharged from the air cooler 5 and the cold air entering the air cooler from flowing and mixing in the double-layer sound-absorbing and sound-insulating wall 1, the vertical air cooler ventilation and noise reduction device also includes a cold air and hot air separation plate (not shown in the figure), which is fixedly arranged on the purlin bracket 42. The cold air and hot air separation plate is used to separate the discharged hot air and the incoming cold air, and the strength of the cold air and hot air separation plate and the purlin bracket 42 can allow workers to walk on their surfaces.

[0053] In one embodiment, Figure 5As shown, the air cooler 5 is provided with an air inlet 50 and an air outlet 51, the air inlet 50 is provided on the side of the air cooler 5, and the air outlet 51 is provided on the top of the air cooler 5; the height of the exhaust end bracket 41 is higher than the air cooler 5, the exhaust muffler 3 is fixedly provided on the top of the exhaust end bracket 41, and the exhaust muffler 3 is provided above the exhaust outlet 51; the air inlet end bracket 40 is provided below the exhaust outlet 51, the air inlet muffler 2 is fixedly provided on the top of the air inlet end bracket 40, and the purlin bracket 42 is provided below the exhaust outlet 51. According to the structure of the above-mentioned exhaust end bracket 41, air inlet end bracket 40 and purlin bracket 42, the air inlet and exhaust routes of the air cooler 5 are as follows: cold air enters from the air inlet muffler 2, passes through the area where the air inlet end bracket 40 is located, and the area below the cold air and hot air partition plate, and enters the air inlet 50 on the side of the air cooler 5; the hot air discharged from the exhaust outlet 51 is discharged into the outside air through the exhaust muffler 3.

[0054] The purpose of setting the air inlet end bracket 40 lower than the air outlet 51 is that the discharged hot air has a lower density than the incoming cold air and flows upward after being discharged. The air inlet end bracket 40 is set at a preset distance lower than the exhaust end bracket 41 to prevent the hot air flowing out of the exhaust muffler 3 from flowing into the air inlet muffler 2, thereby reducing the intake temperature of the cold air and improving the heat exchange rate of the air cooler 5.

[0055] It is worth mentioning here that the positional relationship between the above-mentioned air inlet end bracket 40, exhaust end bracket 41 and purlin bracket 42, as well as the installation positions of the air inlet muffler 2, exhaust muffler 3 and cold air and hot air partition plate, are not the only options. In this embodiment, they are only used as examples for explanation. In another option, the air inlet muffler 2 can also be directly set at the corresponding position of the air inlet 50, that is, on the side of the air cooler 5. Therefore, the design scheme adopted in the actual application scenario should be designed based on environmental factors such as the factory area and local environmental conditions.

[0056] Based on the installation positions of the aforementioned inlet muffler 2 and exhaust muffler 3, the inner sound-absorbing and sound-insulating panels 10 and the outer sound-insulating panels 11 are disposed on the side surfaces of the inlet bracket 40 and the exhaust bracket 41. In a preferred embodiment, to enhance the sound insulation effect of the double-layer sound-absorbing and sound-insulating wall 1, the double-layer sound-absorbing and sound-insulating wall 1 further comprises rock wool. The inner sound-absorbing and sound-insulating panels 10 and the outer sound-insulating panels 11 are fixed to the inlet bracket 40 and the exhaust bracket 41 via keels, and the rock wool is filled between the inner sound-absorbing and sound-insulating panels 10 and the outer sound-insulating panels 11. The rock wool has a thickness of 150 mm ± 2 mm and a density of 120 kg / m 3 .

[0057] In current practical applications, the ventilation and silencer system used creates a semi-enclosed enclosure around the air cooler 5. This enclosure is mostly made of metal materials like color-coated steel sheets. The noise emitted by the air cooler 5 is reflected off the color-coated steel walls, causing personnel working within the enclosure to be subjected to not only the direct noise from the air cooler 5 but also the reflected sound from the color-coated steel sheets. This excessive noise intensity is detrimental to the health of personnel working within the enclosure. To address this issue, this embodiment provides a structural solution consisting of an inner sound-absorbing and sound-insulating panel 10 and an outer sound-insulating panel 11, tailored to the noise spectrum of the air cooler 5.

[0058] The inner sound-absorbing and sound-insulating panel 10 is 25 mm ± 0.1 mm thick and includes, in descending order, a spray-coated anti-corrosion layer, a porous panel, a first fiberglass cloth, reinforcement ribs, rock wool, and a galvanized steel sheet. The porosity of the inner porous panel is greater than or equal to 40%. When the inner porous panel is made of the porous galvanized sheet, the thickness is 1 mm ± 0.1 mm. When the inner porous panel is made of the porous coated aluminum sheet, the thickness is 0.35 mm ± 0.1 mm. The panel material used can be selected based on the actual site and cost budget, and is not specifically limited here.

[0059] For the outer sound insulation board 11, Figure 6 As shown, the outer sound insulation board 11 includes, arranged from outer to inner, a plastic spray anti-corrosion layer 110, a first galvanized steel sheet 111, a first glass fiber cloth 112, a first rock wool 113, a second glass fiber cloth 114, and a second galvanized steel sheet 115. The outer sound insulation board 11 has an overall thickness of 30 mm ± 1 mm, a thickness of the first galvanized steel sheet 111 of 0.6 mm ± 0.1 mm, a thickness of the first rock wool 113 of 29 mm ± 1 mm, and a thickness of the second galvanized steel sheet 115 of 0.6 mm ± 0.1 mm.

[0060] The double-layer sound-absorbing and soundproofing wall 1, composed of the aforementioned inner sound-absorbing and sound-insulating panels 10, outer sound-insulating panels 11, and rock wool, has a sound insulation performance of ≥50dB and a sound absorption coefficient of ≥0.92, providing excellent sound absorption and sound insulation for the broadband noise generated by the air cooler 5. In an actual application scenario, the double-layer sound-absorbing and soundproofing wall 1 was used to test the noise intensity at the inspection and operation point of the air cooler 5. Before the double-layer sound-absorbing and soundproofing wall 1 was installed, the noise intensity at this inspection and operation point was 88.9dB(A). After the double-layer sound-absorbing and soundproofing wall 1 was installed, the noise intensity at this inspection and operation point was 89.6dB(A), an increase of only 0.7dB(A). Therefore, it can be concluded that the double-layer sound-absorbing and soundproofing wall effectively eliminates internal reflected sound.

[0061] In the prior art, the structural form and spacing of ventilation silencers such as silencer sheets are not specifically designed according to the noise intensity and noise spectrum characteristics of the equipment, and therefore the expected noise reduction effect cannot be achieved. In this embodiment, the structures of the air inlet silencer 2 and the exhaust silencer 3 are designed based on the noise intensity and spectrum characteristics of the air cooler 5. The air inlet silencer 2 is 6.6m±0.01m long, 5.2m±0.01m wide, and 2.0m±0.01m high, and the exhaust silencer 3 is 4.4m±0.01m long, 5.2m±0.01m wide, and 2.0m±0.01m high. The air inlet silencer 2 and the exhaust silencer 3 are provided with microporous silencer sheets 30, such as Figure 7 As shown, the structure of the microporous sound-absorbing sheet 30 includes, from top to bottom, a first galvanized microporous plate 300, a first weather-resistant waterproof cloth 301, ultra-fine glass wool 302, a galvanized keel 303, a second weather-resistant waterproof cloth 304, and a second galvanized microporous plate 305; wherein, the overall thickness of the microporous sound-absorbing sheet 30 is 200mm±2mm, the width is 2250mm±2mm, and the height is 2000mm±2mm; the thickness of the first galvanized microporous plate 300 and the second galvanized microporous plate 305 is 2mm±0.1mm, the perforation diameter is 0.8mm±0.1mm, and the perforation rate is 43%±1%; the bulk density of the ultra-fine glass wool 302 is 48kg / m 3 The noise reduction of the air inlet muffler 2 and the exhaust muffler 3 designed according to the above scheme is ≥25dB(A).

[0062] In this embodiment, in addition to the above structure, the ventilation and noise reduction device for vertical air cooler Figure 5 As shown, it also includes a walkway 6, which is arranged on one side of the air cooler 5.

[0063] In order to enhance the heat dissipation effect of the air cooler, the air cooler is provided with heat dissipation tube bundle fins 7, and the heat dissipation tube bundle fins 7 are respectively arranged on both sides of the air outlet of the air cooler.

[0064] In addition to the above structures, Figure 8 As shown, the two side walls of the double-layer sound-absorbing and soundproofing wall 1 are further provided with a first soundproofing door 12 and a second soundproofing door 13, which are mounted on the steel structure support 4. The first and second soundproofing doors 12 and 13 have a width of 0.9 m ± 0.01 m and a height of 2.0 m ± 0.01 m, and a sound insulation rating Rw of 40 dB(A). In the prior art, soundproofing doors are typically made of metal. The noise emitted by the air cooler 5 reflects off metal soundproofing doors, increasing the noise intensity. Therefore, in a preferred embodiment, the material selection and structural design of the first and second soundproofing doors 12 and 13 can be tailored to the noise spectrum.

[0065] According to the above scheme, the noise intensity of the factory boundary wall on the side of air cooler 5 was 86.3dB(A) before treatment and 48.7dB(A) after treatment, showing a significant reduction. Inside the ventilation and noise reduction device, the noise intensity at the inspection operation position of air cooler 5 was 88.9dB(A) before treatment and 89.6dB(A) after treatment, effectively reducing reflected sound. Moreover, the intensity outside the ventilation and noise reduction device was 87.1dB(A) before treatment and 51.4dB(A) after treatment. Therefore, according to the measurement results, it can be seen that the ventilation and noise reduction device provided by the embodiment of the present invention not only makes the noise intensity of the factory boundary wall on the side of air cooler 5 meet the standard (≤50dB(A)), but also reduces the overall noise intensity in the air cooler 5 area and reduces the noise intensity to which personnel on duty are exposed.

[0066] According to the above solution, this embodiment also provides an installation method of a vertical air cooler ventilation and noise reduction device, which is applicable to the vertical air cooler ventilation and noise reduction device described in the above solution, such as Figure 9 As shown, including:

[0067] In step S1 , the steel structure support 4 is erected outside the air cooler 5 .

[0068] In actual installation, the inlet bracket 40 is first installed as a whole, followed by the columns of the exhaust bracket 41. Finally, the purlin bracket 42 and the crossbeam and longitudinal beams at the top of the exhaust bracket 41 are installed in sequence. The inlet bracket 40 and the exhaust bracket 41 are fixed to the reinforced concrete base 8 with pre-buried anchor bolts, and the exhaust bracket 41 and the purlin bracket 42 are connected with high-strength bolts.

[0069] In step S2 , the inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11 are fixedly mounted on the steel support 4 .

[0070] Specifically, during the installation process, the inner sound-absorbing and sound-insulating panel 10, the keel, the rock wool, the keel, and the outer sound-insulating panel 11 are installed in sequence from the inside to the outside. The inner sound-absorbing and sound-insulating panel 10 and the outer sound-insulating panel 11 are fixedly mounted on the keel, and the keel is mounted on the columns of the air inlet end bracket 40 and the air outlet end bracket 41 by bolts.

[0071] In step S3 , the air inlet muffler 2 and the air exhaust muffler 3 are fixedly mounted on the steel structure support 4 .

[0072] After installing the air inlet muffler 2 and the exhaust muffler 3, the cold air and hot air separation plate can be installed on the purlin bracket 42. After installation, the cold air and hot air separation plate must be strong enough to allow people to walk and bear weight.

[0073] Finally, the first soundproof door 12 and the second soundproof door 13 are installed on the steel structure support 4 to complete the installation.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical air cooler ventilation noise reduction device, characterized in that: include: A double-layer sound-absorbing and sound-insulating wall (1), an air inlet muffler (2), an exhaust muffler (3), and a steel structure support (4); the steel structure support (4) is erected outside the air cooler (5), and the steel structure support (4) is used to install the double-layer sound-absorbing and sound-insulating wall (1), the air inlet muffler (2), and the exhaust muffler (3); The double-layer sound-absorbing and sound-insulating wall (1) comprises an inner sound-absorbing and sound-insulating board (10) and an outer sound-insulating board (11); the inner sound-absorbing and sound-insulating board (10) is fixed to the inner side of the steel structure support (4); and the outer sound-insulating board (11) is fixed to the outer side of the steel structure support (4).

2. The ventilation and noise reduction device for a vertical air cooler according to claim 1, characterized in that: The steel structure support (4) includes an air inlet end support (40), an air outlet end support (41) and a purlin support (42), and the device further includes a base (8), the bottoms of the air inlet end support (40) and the air outlet end support (41) are fixedly connected to the base (8), the air inlet end support (40) is arranged on one side of the air outlet end support (41), and the air outlet end support (41) is mounted on the outside of the air cooler (5); the purlin support (42 ) is fixedly arranged in the middle of the exhaust end bracket (41) and is arranged below the top of the exhaust end bracket (41); the air inlet muffler (2) is fixedly arranged on the air inlet end bracket (40), and the exhaust muffler (3) is fixedly arranged on the exhaust end bracket (41); the air inlet end bracket (40) is arranged at a preset distance below the exhaust end bracket (41), and the air inlet end bracket (40) and the exhaust end bracket (41) are connected to each other; The vertical air cooler ventilation and noise reduction device further comprises a cold air and hot air separation plate, and the cold air and hot air separation plate is fixedly arranged on the purlin bracket (42).

3. The ventilation and noise reduction device for a vertical air cooler according to claim 2, characterized in that: The air cooler (5) is provided with an air inlet (50) and an air outlet (51), the air inlet (50) is provided on the side of the air cooler (5), and the air outlet (51) is provided on the top of the air cooler (5); the height of the exhaust end bracket (41) is higher than the air cooler (5), the exhaust muffler (3) is fixedly provided on the top of the exhaust end bracket (41), and the exhaust muffler (3) is provided above the air outlet (51); the air inlet end bracket (40) is provided below the air outlet (51), the air inlet muffler (2) is fixedly provided on the top of the air inlet end bracket (40), and the purlin bracket (42) is provided below the air outlet (51).

4. The ventilation and noise reduction device for a vertical air cooler according to claim 3, characterized in that: The inner layer sound absorbing and sound insulating panel (10) and the outer layer sound insulating panel (11) are arranged on the side surfaces of the air inlet end bracket (40) and the air outlet end bracket (41).

5. The ventilation and noise reduction device for a vertical air cooler according to claim 4, characterized in that: The double-layer sound-absorbing and sound-insulating wall (1) further comprises rock wool, the inner layer sound-absorbing and sound-insulating board (10) and the outer layer sound-insulating board (11) are fixedly arranged on the air inlet end bracket (40) and the air outlet end bracket (41) via keels, and the rock wool is filled and arranged between the inner layer sound-absorbing and sound-insulating board (10) and the outer layer sound-insulating board (11).

6. The ventilation and noise reduction device for a vertical air cooler according to claim 5, characterized in that: The thickness of the rock wool is 150mm±2mm and the density is 120kg / m 3 .

7. The ventilation and noise reduction device for a vertical air cooler according to claim 1, characterized in that: The air inlet muffler (2) and the air exhaust muffler (3) are provided with a microporous muffler sheet (30), the structure of the microporous muffler sheet (30) comprising, arranged in order from top to bottom, a first galvanized microporous sheet (300), a first weather-resistant waterproof cloth (301), ultra-fine glass wool (302), a galvanized keel (303), a second weather-resistant waterproof cloth (304), and a second galvanized microporous sheet (305); The microporous sound-absorbing sheet (30) has an overall thickness of 200 mm ± 2 mm, a width of 2250 mm ± 2 mm, and a height of 2000 mm ± 2 mm. The first galvanized microporous plate (300) and the second galvanized microporous plate (305) have a thickness of 2 mm ± 0.1 mm, a perforation diameter of 0.8 mm ± 0.1 mm, and a perforation rate of 43% ± 1%. The bulk density of the ultrafine glass wool (302) is 48 kg / m 3 .

8. The ventilation and noise reduction device for a vertical air cooler according to claim 1, characterized in that: The inner layer sound absorption and sound insulation board (10) has a thickness of 25 mm ± 0.1 mm and comprises a spray-coated anti-corrosion layer, a porous board, a first glass fiber cloth, a reinforcing rib, rock wool, and a galvanized steel board arranged in sequence from the outer layer to the inner layer, and the opening rate of the inner layer porous board is greater than or equal to 40%; When the inner porous plate is made of the porous galvanized plate, the thickness of the inner sound-absorbing and sound-insulating plate (10) is 1 mm ± 0.1 mm; When the inner porous plate is made of the porous coated aluminum plate, the thickness of the inner sound-absorbing and sound-insulating plate (10) is 0.35 mm ± 0.1 mm.

9. The ventilation and noise reduction device for a vertical air cooler according to claim 1, characterized in that: The outer sound insulation board (11) comprises a spray-coated anti-corrosion layer (110), a first galvanized steel plate (111), a first glass fiber cloth (112), a first rock wool (113), a second glass fiber cloth (114) and a second galvanized steel plate (115) arranged in sequence from the outer layer to the inner layer; The thickness of the first galvanized steel plate (111) is 0.6 mm ± 0.1 mm, the thickness of the first rock wool (113) is 29 mm ± 1 mm, and the thickness of the second galvanized steel plate (115) is 0.6 mm ± 0.1 mm.

10. A method for installing a ventilation and noise reduction device for a vertical air cooler, applicable to the ventilation and noise reduction device for a vertical air cooler according to any one of claims 1 to 9, characterized in that: include: The steel structure support (4) is erected outside the air cooler (5); The inner layer sound absorbing and sound insulating panel (10) and the outer layer sound insulating panel (11) are fixedly mounted on the steel structure support (4); The air inlet muffler (2) and the air exhaust muffler (3) are fixedly mounted on the steel structure support (4).

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