Air-cooled generator set with noise reduction function

Abstract

The utility model belongs to the technical field of generator sets, and particularly relates to an air-cooled generator set with a noise reduction function. Comprising an air-cooled generator set body, and an exhaust pipeline matched with an exhaust outlet in position is arranged on the right side in the air-cooled generator set body; the silencer is mounted in the exhaust pipeline; the exhaust mechanism is fixedly mounted on the air-cooled generator set body and is matched with the exhaust outlet in position; the two perforated silencing plates are fixedly mounted on the upper side and the lower side in the exhaust mechanism correspondingly. The multiple pieces of bowl-shaped noise reduction cotton are evenly arranged and installed in the exhaust mechanism and located between the two perforated noise reduction plates, and a plurality of ventilation holes are formed in the tops of the multiple pieces of bowl-shaped noise reduction cotton in a surrounding mode. The noise reduction device is simple in structure and reasonable in design, noise generated during air exhaust is subjected to multi-layer noise reduction through sound absorption and noise reduction materials such as the perforated noise reduction plate, the silencer, the polyester fiber cotton and the bowl-shaped noise reduction cotton, and the noise reduction effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of generator set, specifically relates to a wind cooling generator set with noise reduction function. BACKGROUND

[0002] The wind cooling diesel generator set is a kind of generator set using diesel as fuel, and the heat is removed by wind cooling system, and the working principle is to convert the energy generated by diesel combustion into electric energy, and at the same time, the heat is removed by wind cooling system to ensure the normal operation of generator.

[0003] The wind cooling diesel generator set, since internal combustion engine relies on surface heat dissipation, needs air flow to realize, and the sound of machine is just transmitted with flowing air, so it will produce certain noise when working, and the noise reduction mode in prior art is usually to install soundproof board at exhaust port of wind cooling diesel generator set, and the noise reduction mode is relatively single, and the noise reduction effect is limited. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a wind cooling generator set with noise reduction function, and the noise generated during exhaust is multi-layered noise reduction by setting perforated sound-absorbing board, silencer, polyester fiber cotton, bowl-shaped sound-absorbing cotton and other sound-absorbing and noise reduction materials, and the noise reduction effect is good.

[0005] To realize the above technical purpose, the utility model adopts the technical scheme as follows:

[0006] A wind cooling generator set with noise reduction function, comprising

[0007] The wind cooling generator set body is provided with an exhaust port on the top right side, and an exhaust duct matched with the position of the exhaust port is arranged inside the right side of the wind cooling generator set body.

[0008] The silencer is installed inside the exhaust duct.

[0009] The exhaust mechanism is fixedly installed on the wind cooling generator set body and matched with the position of the exhaust port.

[0010] The perforated sound-absorbing board is provided with two pieces, and the two pieces of perforated sound-absorbing board are fixedly installed on the upper and lower sides inside the exhaust mechanism.

[0011] The bowl-shaped sound-absorbing cotton is provided with a plurality of pieces, and the plurality of pieces of bowl-shaped sound-absorbing cotton are uniformly arranged and installed inside the exhaust mechanism, the plurality of pieces of bowl-shaped sound-absorbing cotton are located between the two pieces of perforated sound-absorbing board, and the plurality of pieces of bowl-shaped sound-absorbing cotton are provided with a plurality of ventilation holes around the top.

[0012] As a preferred technical scheme, the air exhaust mechanism comprises a noise reduction sleeve, the noise reduction sleeve is fixedly installed on the air-cooled generator set body and matches the position of the air exhaust port, an annular damping pad is fixedly installed inside the noise reduction sleeve, an assembly sleeve is fixedly installed inside the annular damping pad, two perforated sound-absorbing plates are respectively fixedly installed on the upper side and the lower side of the assembly sleeve inside, and a plurality of bowl-shaped sound-absorbing cots are uniformly arranged and installed inside the assembly sleeve.

[0013] As a preferred technical scheme, the air exhaust mechanism comprises a noise reduction sleeve, the noise reduction sleeve is fixedly installed on the air-cooled generator set body and matches the position of the air exhaust port, an annular damping pad is fixedly installed inside the noise reduction sleeve, an assembly sleeve is fixedly installed inside the annular damping pad, two perforated sound-absorbing plates are respectively fixedly installed on the upper side and the lower side of the assembly sleeve inside, and a plurality of bowl-shaped sound-absorbing cots are uniformly arranged and installed inside the assembly sleeve.

[0014] As a preferred technical scheme, the air exhaust mechanism comprises a noise reduction sleeve, the noise reduction sleeve is fixedly installed on the air-cooled generator set body and matches the position of the air exhaust port, an annular damping pad is fixedly installed inside the noise reduction sleeve, an assembly sleeve is fixedly installed inside the annular damping pad, two perforated sound-absorbing plates are respectively fixedly installed on the upper side and the lower side of the assembly sleeve inside, and a plurality of bowl-shaped sound-absorbing cots are uniformly arranged and installed inside the assembly sleeve.

[0015] As a preferred technical scheme, the air exhaust mechanism comprises a noise reduction sleeve, the noise reduction sleeve is fixedly installed on the air-cooled generator set body and matches the position of the air exhaust port, an annular damping pad is fixedly installed inside the noise reduction sleeve, an assembly sleeve is fixedly installed inside the annular damping pad, two perforated sound-absorbing plates are respectively fixedly installed on the upper side and the lower side of the assembly sleeve inside, and a plurality of bowl-shaped sound-absorbing cots are uniformly arranged and installed inside the assembly sleeve.

[0016] As a preferred technical scheme, the air exhaust mechanism comprises a noise reduction sleeve, the noise reduction sleeve is fixedly installed on the air-cooled generator set body and matches the position of the air exhaust port, an annular damping pad is fixedly installed inside the noise reduction sleeve, an assembly sleeve is fixedly installed inside the annular damping pad, two perforated sound-absorbing plates are respectively fixedly installed on the upper side and the lower side of the assembly sleeve inside, and a plurality of bowl-shaped sound-absorbing cots are uniformly arranged and installed inside the assembly sleeve.

[0017] The beneficial effects of the utility model are as follows:

[0018] In use, the perforated sound-absorbing plates, the sound absorber, the polyester fiber cotton, the bowl-shaped sound-absorbing cotton and other sound-absorbing and noise-reducing materials are arranged, the air exhaust mechanism is arranged in an extended mode, noise is reduced layer by layer when air is exhausted, noise pollution is effectively reduced, the annular damping pad of the assembly sleeve and the sound insulation plate of the air exhaust pipeline are arranged for vibration noise caused by wind energy, vibration noise caused by wind energy is effectively reduced, and the noise reduction effect is good. ACCURACY OF DRAWINGS

[0019] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings.

[0020] Figure 1 The utility model is a partial cross-sectional structure diagram Figure 1 ;

[0021] Figure 2 The utility model is an air exhaust mechanism structure diagram Figure 1 ;

[0022] Figure 3 The utility model is an air exhaust mechanism structure diagram Figure 2 ;

[0023] Figure 4 The utility model is a partial cross-sectional structure diagram Figure 2 ;

[0024] Figure 5 The utility model discloses a bowl-shaped sound-absorbing cotton structure schematic view.

[0025] The figure mark: air -cooled generator set body 1, shock pad 101, exhaust duct 11, soundproof board 2, muffler 3, exhaust mechanism 4, noise reduction sleeve 41, annular shock pad 42, assembly sleeve 43, polyester fiber cotton 44, z -shaped through -hole 45, perforated sound-absorbing board 5, bowl-shaped sound-absorbing cotton 6, air vent 61. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art can better understand the utility model, the utility model technical scheme is further explained below with the figure and example.

[0027] As Figures 1-5 The utility model discloses a kind of air-cooled generator sets with noise reduction function, comprising

[0028] Air-cooled generator set body 1, air-cooled generator set body 1 is composed of independent generator warehouse and generator set, generator set is located in independent generator warehouse interior, air-cooled generator set body 1 top right side is equipped with exhaust port, air-cooled generator set body 1 interior right side is equipped with with the exhaust port position matching exhaust duct 11;

[0029] Muffler 3, muffler 3 is installed in exhaust duct 11 interior;When carrying out exhaust, wind is discharged in the direction after preliminary sound-absorbing by muffler 3

[0030] Exhaust mechanism 4, exhaust mechanism 4 is fixedly installed in air-cooled generator set body 1 and with the exhaust port position matching;Specific exhaust mechanism 4 includes noise reduction sleeve 41, noise reduction sleeve 41 is fixedly installed in air-cooled generator set body 1 and with the exhaust port position matching, noise reduction sleeve 41 interior is fixedly installed with annular shock pad 42, annular shock pad 42 interior is fixedly installed with assembly sleeve 43, two perforated sound-absorbing boards 5 are respectively fixedly installed in assembly sleeve 43 interior upper and lower two sides, several bowl-shaped sound-absorbing cottons 6 are evenly arranged and installed in assembly sleeve 43 interior.

[0031] When the air-cooled generator set body 1 is air-cooled, the wind will be discharged through the assembly sleeve 43. When the wind acts on the assembly sleeve 43, the annular shock pad 42 can reduce the vibration noise generated by the wind. After the wind is preliminarily de-noised by the muffler 3, the wind is discharged upward through the perforated sound-absorbing plate 5. The perforated sound-absorbing plate 5 is provided with a plurality of small holes, which can disperse the exhaust gas flow, generate more turbulent flow, consume sound energy and reduce noise. After the sound is absorbed, the wind is discharged through the bowl-shaped sound-absorbing cotton 6 and the upper perforated sound-absorbing plate 5. The bowl-shaped sound-absorbing cotton 6 is of sound-absorbing material, which can further reduce noise. The arc structure can reduce the propagation of sound energy by using the reflection principle. After the sound energy between the bowl-shaped sound-absorbing cotton 6 is reflected and absorbed for many times, the noise in the gas flow is effectively reduced. The wind power and sound energy can also be consumed to reduce noise.

[0032] The perforated sound-absorbing plate 5 is provided with two pieces, which are fixedly installed on the upper and lower sides of the air exhaust mechanism 4.

[0033] The bowl-shaped sound-absorbing cotton 6 is provided with a plurality of pieces, which are uniformly arranged and installed in the air exhaust mechanism 4. The plurality of bowl-shaped sound-absorbing cotton 6 are located between the two perforated sound-absorbing plates 5. The top of the plurality of bowl-shaped sound-absorbing cotton 6 is surrounded by a plurality of ventilation holes 61.

[0034] The polyester fiber cotton 44 is fixedly installed on the upper side of the assembly sleeve 43. The polyester fiber cotton 44 is located below the upper perforated sound-absorbing plate 5. The top of the polyester fiber cotton 44 is arranged with a plurality of z-shaped through holes 45. When the wind is discharged upward, it is discharged through the plurality of z-shaped through holes 45. The polyester fiber cotton 44 has sound-absorbing effect and can reduce noise. The z-shaped through hole 45 can increase the contact area and contact time of sound energy and sound-absorbing material, thereby improving the sound-absorbing efficiency.

[0035] Four shock pads 101 are uniformly arranged at the bottom of the air-cooled generator set body 1. The shock pad 101 can reduce the noise generated by the vibration of the air-cooled generator set body 1 during operation.

[0036] The sound insulation board 2 is fixedly installed on the periphery of the air exhaust pipe 11. The sound insulation board 2 can reduce the noise transmitted to the outside when the wind acts on the inside of the air exhaust pipe 11.

[0037] The perforation rate of one of the perforated sound-absorbing plates 5 is greater than or equal to 20%, and the perforation rate of the other perforated sound-absorbing plate 5 is less than 20%. The perforation rate of one of the perforated sound-absorbing plates 5 is greater than or equal to 20%, which can better absorb the middle and high frequency noise. The perforation rate of the other perforated sound-absorbing plate 5 is less than 20%, which can better absorb the low frequency noise.

[0038] The use mode of the device is as follows:

[0039] In the process of cooling the air-cooled generator set body 1, the cooled air enters the exhaust duct 11, and after the initial noise reduction of the silencer 3, the air is discharged upward through the assembly sleeve 43, and during the process, it successively passes through the lower perforated sound-absorbing plate 5, the bowl-shaped sound-absorbing cotton 6, the polyester fiber cotton 44, and the upper perforated sound-absorbing plate 5, and is discharged after multiple noise reduction and noise reduction. The perforation rate of one perforated sound-absorbing plate 5 is greater than or equal to 20%, which has a better sound-absorbing effect on medium and high frequency noise. The perforation rate of the other perforated sound-absorbing plate 5 is less than 20%, which has a good sound-absorbing effect on low-frequency noise. The bowl-shaped sound-absorbing cotton 6 is a sound-absorbing material and has a noise reduction effect. The arc structure can reduce the propagation of sound energy by using the reflection principle. After the sound energy between the bowl-shaped sound-absorbing cotton 6 is reflected and absorbed for many times, the noise in the airflow is effectively reduced. The z-shaped through hole 45 of the polyester fiber cotton 44 can increase the contact time of sound energy and polyester fiber cotton 44, further play a noise reduction effect, and the exhaust duct 11 is provided with a sound insulation board 2, which can reduce the vibration noise when the air contacts the exhaust duct 11. The assembly sleeve 43 is provided with a ring-shaped damping pad 42 to further reduce the vibration noise generated by the wind energy. The above structure is also suitable for use at the air inlet of the cooling system of the air-cooled generator set body 1.

[0040] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed by the present application should be covered by the claims of the present application.

Claims

1. A wind-cooled generator set with noise reduction function, characterized in that: Comprising The air-cooled generator set body (1), the air-cooled generator set body (1) top right side is equipped with exhaust port, the air-cooled generator set body (1) inside right side is equipped with with exhaust port position matching exhaust duct (11); The muffler (3) is installed in the exhaust duct (11) inside; The exhaust mechanism (4) is fixedly installed on the air-cooled generator set body (1) and matched with the exhaust port position; Perforated sound-absorbing board (5) is provided with two, two said perforated sound-absorbing board (5) is fixedly installed in the exhaust mechanism (4) inside upper and lower sides respectively; Bowl-shaped sound-absorbing cotton (6) is provided with several, several said bowl-shaped sound-absorbing cotton (6) is evenly arranged and installed in the exhaust mechanism (4) inside, several said bowl-shaped sound-absorbing cotton (6) is located between two perforated sound-absorbing boards (5), and several said bowl-shaped sound-absorbing cotton (6) top is surrounded by several ventilation holes (61).

2. The air-cooled generator set with noise reduction function according to claim 1, characterized in that: The exhaust mechanism (4) includes a noise reduction sleeve (41), the noise reduction sleeve (41) is fixedly installed on the air-cooled generator set body (1) and matched with the exhaust port position, the noise reduction sleeve (41) is fixedly installed with annular damping pad (42) inside, the annular damping pad (42) is fixedly installed with assembly sleeve (43) inside, two said perforated sound-absorbing board (5) is fixedly installed in the assembly sleeve (43) inside upper and lower sides respectively, and several said bowl-shaped sound-absorbing cotton (6) is evenly arranged and installed in the assembly sleeve (43) inside.

3. The air-cooled generator set with noise reduction function according to claim 2, characterized in that: The assembly sleeve (43) is fixedly installed with polyester fiber cotton (44) inside the upper side, the polyester fiber cotton (44) is located below the upper perforated sound-absorbing board (5), and the polyester fiber cotton (44) top is arranged with several z-shaped through holes (45).

4. The air-cooled generator set with noise reduction function according to claim 1, characterized in that: The air-cooled generator set body (1) bottom is evenly arranged with four shock pads (101).

5. The air-cooled generator set with noise reduction function according to claim 1, characterized in that: The exhaust duct (11) is fixedly installed with soundproof board (2) on the periphery.

6. The air-cooled generator set with noise reduction function according to claim 1, characterized in that: The perforation rate of one said perforated sound-absorbing board (5) is greater than or equal to 20%, and the perforation rate of another said perforated sound-absorbing board (5) is less than 20%.

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