Silent box of generator set

Abstract

The utility model belongs to the technical field of power generation equipment, and particularly relates to a sound attenuated enclosure of a generator set, which comprises a sound attenuated enclosure and a generator set, a plurality of air inlets are formed in the mute box; the air guide structures are arranged at the air inlets, each air guide structure comprises a plurality of air guide plates, the air guide plates are vertically arranged at the air inlets in an array mode, each air guide plate comprises a horizontal part, an arc-shaped part and a vertical part, the horizontal parts and the vertical parts are arranged at the two ends of the arc-shaped parts, the horizontal parts are horizontally arranged, and the vertical parts are vertically arranged and perpendicular to the horizontal parts; a sound insulation sheet is arranged on the air guide surface of the air guide plate; the silencing box internally comprises an installation cavity and a silencing cavity which are communicated, the generator set is installed in the installation cavity, a cooling fan is arranged on the right side of the generator set, and silencers arranged in an array mode in the front-back direction are arranged in the silencing cavity. The silencer comprises a silencing piece, the silencing piece is filled with silencing materials, and the left end and the right end of the silencing piece are both conical. The air outlet is located over the silencing cavity. According to the scheme, the silencing effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of power generation equipment, and in particular relates to a soundproof box of a generator set. Background Art

[0002] Generator sets generate a lot of noise during operation, with sound levels reaching over 118 decibels, causing serious environmental pollution. Furthermore, this noise can affect people's normal work and daily lives, and harm their physical and mental health. To address this problem, various noise reduction and muffler methods have been employed in the prior art.

[0003] However, the existing labyrinthine structure, through multiple branching and redirection of airflow, creates a relative impact between airflow and sound, achieving a noise reduction and muffler effect. Due to the numerous turns in the airflow channel, the airflow undergoes multiple changes in direction, increasing resistance in the intake and exhaust channels. If this resistance exceeds the rated pressure at the cooling fan of a generator set or other moving mechanical equipment, the actual ventilation volume in the channel will be far less than the required airflow from the cooling fan. This can potentially lead to an alarm shutdown due to overheating of the generator set, effectively failing to ensure the normal operation of such moving mechanical equipment. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a silent box for a generator set to solve the maze-like structure in the prior art. By multiple maze-like branches and changes in airflow direction, the airflow and sound produce a relative impact, achieving a noise reduction and silencing effect. Due to the large number of turns in the airflow channel, the airflow must change direction multiple times, thereby increasing the resistance in the intake and exhaust channels. If this resistance is greater than the rated wind pressure at the cooling fan of a moving mechanical device such as a generator set, the actual ventilation volume of the channel will be far lower than the air volume required by the cooling fan. This is likely to result in the generator set operating temperature being too high and an alarm shutting down, making it impossible to effectively ensure the normal operation of such moving mechanical equipment.

[0005] The technical solution adopted by the utility model is as follows: a silent box for a generator set, comprising a silent box and a generator set;

[0006] The side wall of the mute box is provided with a plurality of air inlets, and the top of the mute box is provided with an air outlet;

[0007] An air guide structure is provided at each of the air inlets. The air guide structure comprises a plurality of air guide plates, which are arranged in a vertical array at the air inlet. The air guide plates comprise a horizontal portion, an arc-shaped portion, and a vertical portion. The horizontal portion and the vertical portion are arranged at both ends of the arc-shaped portion. The horizontal portion is arranged horizontally, and the vertical portion is arranged vertically and perpendicular to the horizontal portion.

[0008] A sound insulation sheet is provided on the air guide surface of the air guide plate;

[0009] The mute box includes a connecting installation cavity and a muffler cavity, the muffler cavity is arranged on the right side of the installation cavity, the generator set is installed in the installation cavity, a cooling fan is arranged on the right side of the generator set, and the muffler cavity is provided with mufflers arranged in an array along the front-to-back direction;

[0010] The muffler includes a muffler plate filled with a muffler material, and both left and right ends of the muffler plate are tapered;

[0011] The air outlet is located right above the muffler cavity.

[0012] Furthermore, the filling material of the sound-absorbing sheet is a sound-absorbing glass wool sheet.

[0013] Furthermore, a heat dissipation water tank is provided on the right side of the heat dissipation fan. The heat dissipation water tank is provided on the right side of the heat dissipation fan and is located between the heat dissipation fan and the muffler cavity.

[0014] Furthermore, the sound insulation sheet is sound-absorbing cotton, which is pasted on the wind guide surface of the wind guide plate.

[0015] Furthermore, a fire extinguishing device is provided on the front side wall of the soundproof box.

[0016] Furthermore, several of the air inlets are respectively opened on the front side wall, left side wall and rear side wall of the soundproof box.

[0017] Beneficial effects of the utility model:

[0018] When in use, the cooling fan is started, so that negative pressure is formed on the left side of the cooling fan, and the air flows into the silent box through several air inlets on the front side wall, left side wall and rear side wall of the silent box, and the air flow entering the silent box is sound-absorbing by the sound insulation sheet of the air guide plate on the air inlet. By setting the air guide plate to be used in conjunction with the horizontal part, the arc part and the vertical part, and setting the sound insulation sheet on the air guide surface of the air guide plate, the air flow and sound waves entering the silent box can change the flow path, thereby increasing the collision and reflection of the sound waves with the sound insulation sheet, effectively improving the sound attenuation of the air inlet, and preliminarily silencing the noise carried in the air flow. The airflow generated by the generator set is processed and then discharged to the right into the silencer chamber through the cooling fan. Since the air outlet is arranged at the top of the silencer box, directly above the silencer chamber, and silencers are arranged in an array along the front and rear directions in the silencer chamber, the airflow path of the cooling fan discharged to the right into the silencer chamber is restricted. The conical structure at the left end of the silencer plate allows the airflow to enter the silencer plates distributed in the array more smoothly for silencer processing, reducing the exhaust resistance in the silencer chamber. After being silenced by the silencer plate, the airflow is discharged upward to the air outlet. Direct air intake is not adopted to avoid the intake noise being directly transmitted to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the utility model from the front;

[0021] Figure 3 It is a partial cross-sectional view of the utility model from above;

[0022] Figure 4 It is a partial cross-sectional view of the air guide structure of the utility model;

[0023] The attached drawings are marked as follows:

[0024] Silent box 1, air inlet 11, installation cavity 12, silencer cavity 13, air outlet 14, generator set 2, air guide structure 3, air guide plate 31, horizontal portion 311, arc-shaped portion 312, vertical portion 313, sound insulation sheet 4, cooling fan 5, muffler 6, silencer sheet 61, cooling water tank 7, fire extinguishing device 8. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] like Figures 1 to 4As shown, a silent box of a generator set includes a silent box 1 and a generator set 2;

[0030] The side wall of the mute box 1 is provided with a plurality of air inlets 11, and the top of the mute box 1 is provided with an air outlet 14;

[0031] An air guide structure 3 is provided at each of the air inlets 11. The air guide structure 3 includes a plurality of air guide plates 31. The air guide plates 31 are arranged in a vertical array at the air inlet 11. The air guide plates 31 include a horizontal portion 311, an arcuate portion 312, and a vertical portion 313. The horizontal portion 311 and the vertical portion 313 are arranged at both ends of the arcuate portion 312. The horizontal portion 311 is arranged horizontally, and the vertical portion 313 is arranged vertically and perpendicular to the horizontal portion 311.

[0032] A sound insulation sheet 4 is provided on the air guide surface of the air guide plate 31;

[0033] The mute box 1 includes a connecting installation cavity 12 and a muffler cavity 13. The muffler cavity 13 is arranged on the right side of the installation cavity 12. The generator set 2 is installed in the installation cavity 12. A cooling fan 5 is provided on the right side of the generator set 2. The muffler cavity 13 is provided with mufflers 6 arranged in an array along the front-to-back direction.

[0034] The muffler 6 includes a muffler sheet 61 filled with a muffler material, and both left and right ends of the muffler sheet 61 are tapered;

[0035] The air outlet 14 is located directly above the muffler cavity 13 .

[0036] As a preferred solution, the filling material of the sound-absorbing sheet 61 is a sound-absorbing glass wool sheet. Using the sound-absorbing glass wool sheet to fill the sound-absorbing sheet 61 has good sound insulation and sound absorption performance, making the sound-absorbing effect better.

[0037] As a preferred embodiment, a heat dissipation water tank 7 is provided to the right of the cooling fan 5. The heat dissipation water tank 7 is positioned between the cooling fan 5 and the muffler chamber 13. By providing the heat dissipation water tank 7 to the right of the cooling fan 5, the cooling fan 5 blows the heat generated by the generator set 2 toward the heat dissipation water tank 7. The airflow cooled by the heat dissipation water tank 7 is then blown into the muffler chamber 13, achieving a better heat dissipation effect. In this embodiment, the heat dissipation water tank 7 is a generator-specific water tank manufactured by Huachen Power Equipment Co., Ltd., model R6110ZLD 150KW. The heat dissipation water tank 7 is primarily composed of a radiator core, water pipes, heat dissipation air blades, an upper water tank, and a lower water tank. The upper water tank is on the radiator, and the water tank below the radiator is connected by a water pipe. When the hot water flows from top to bottom to the lower water tank, it becomes warm water. The cooling air blades form a channel, which is used with the cooling fan 5 to allow a large amount of air to pass through the air channel, absorbing the heat of the cooling water flowing through the water pipe and then dissipating it in the muffler chamber 13.

[0038] As a preferred solution, the sound insulation sheet 4 is sound-absorbing cotton, which is pasted on the wind guide surface of the wind guide plate 31. By pasting the sound-absorbing cotton on the wind guide surface of the wind guide plate 31, the noise during the incoming air is initially absorbed, thereby making the overall soundproofing effect of the soundproof box 1 better.

[0039] As a preferred solution, a fire extinguishing device 8 is provided on the front side wall of the silent box 1. By providing the fire extinguishing device 8 on the front side wall of the silent box 1, specifically a fire extinguisher, the fire extinguishing device 8 is prevented from overheating the generator set 2 in the silent box 1 and then causing a fire, thereby ensuring the safety of the device.

[0040] As a preferred solution, the plurality of air inlets 11 are respectively provided on the front side wall, the left side wall and the rear side wall of the soundproof box 1. By providing the air inlets 11 on the front side wall, the left side wall and the rear side wall of the soundproof box 1, the air inlet 11 is dispersed, thereby increasing the air inlet area and making the air intake smoother.

[0041] The working mode of the utility model is as follows:

[0042] When in use, the cooling fan 5 is started, so that negative pressure is formed on the left side of the cooling fan 5, and the air flows into the silent box 1 through the several air inlets 11 on the front side wall, the left side wall and the rear side wall of the silent box 1, and the sound insulation sheet 4 of the air guide plate 31 on the air inlet 11 absorbs the air flow entering the silent box 1. By setting the air guide plate 31 to be used in conjunction with the horizontal part 311, the arc part 312 and the vertical part 313, and pasting the sound-absorbing cotton on the air guide surface of the air guide plate 31, the air flow and sound waves entering the silent box 1 can change the flow path, thereby increasing the collision and reflection of the sound waves with the sound-absorbing cotton, effectively improving the sound attenuation of the air inlet 11, and preliminarily silencing the noise carried in the air flow, and then through the heat dissipation The fan 5 discharges the heat flow generated by the generator set 2 to the right side to the heat dissipation water tank 7 for heat exchange of the air flow, and then discharges the heat flow to the right through the heat dissipation water tank 7 into the silencer chamber 13. Since the air outlet 14 is arranged at the top of the silencer box 1, directly above the silencer chamber 13, and silencers 6 are arranged in an array along the front-to-back direction in the silencer chamber 13, the air flow path of the cooling fan 5 discharged to the right into the silencer chamber 13 is restricted. The conical structure at the left end of the silencer plate allows the air flow to smoothly enter the silencer plates distributed in the array for silencer treatment, reducing the exhaust resistance in the silencer chamber 13. After being silenced by the silencer plate, the air flow is discharged upward to the air outlet 14. Direct air intake is not adopted to avoid the intake noise being directly transmitted to the environment.

[0043] The above describes the present invention in detail. The description of the specific embodiments is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A soundproof box for a generator set, characterized in that: include A soundproof box (1) and a generator set (2); A plurality of air inlets (11) are provided on the side wall of the soundproof box (1), and an air outlet (14) is provided on the top of the soundproof box (1); A wind guide structure (3), wherein the wind guide structure (3) is disposed at each of the plurality of air inlets (11), the wind guide structure (3) comprising a plurality of wind guide plates (31), the wind guide plates (31) being disposed in a vertical array at the air inlet (11), the wind guide plates (31) comprising a horizontal portion (311), an arc-shaped portion (312) and a vertical portion (313), the horizontal portion (311) and the vertical portion (313) being disposed at two ends of the arc-shaped portion (312), the horizontal portion (311) being disposed horizontally, and the vertical portion (313) being disposed vertically and perpendicular to the horizontal portion (311); A sound insulation sheet (4) is provided on the air guide surface of the air guide plate (31); The mute box (1) comprises a connecting installation cavity (12) and a muffler cavity (13), the muffler cavity (13) being arranged on the right side of the installation cavity (12), the generator set (2) being installed in the installation cavity (12), a cooling fan (5) being arranged on the right side of the generator set (2), and the muffler cavity (13) being arranged in an array along the front-rear direction. The muffler (6) comprises a muffler sheet (61), the muffler sheet (61) is filled with muffler material, and both left and right ends of the muffler sheet (61) are tapered; The air outlet (14) is located directly above the muffler chamber (13).

2. A soundproof box for a generator set according to claim 1, characterized in that: The filling material of the sound-absorbing sheet (61) is a sound-absorbing glass wool sheet.

3. The soundproof box of a generator set according to claim 1, characterized in that: A heat dissipation water tank (7) is arranged on the right side of the heat dissipation fan (5); the heat dissipation water tank (7) is arranged on the right side of the heat dissipation fan (5); and the heat dissipation water tank (7) is located between the heat dissipation fan (5) and the muffler chamber (13).

4. The soundproof box of a generator set according to claim 1, characterized in that: The sound insulation sheet (4) is sound-absorbing cotton, which is pasted on the wind guide surface of the wind guide plate (31).

5. The soundproof box of a generator set according to claim 1, characterized in that: A fire extinguishing device (8) is provided on the front side wall of the soundproof box (1).

6. The soundproof box of a generator set according to claim 1, characterized in that: The plurality of air inlets (11) are respectively provided on the front side wall, the left side wall and the rear side wall of the soundproof box (1).

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