Noise reduction device of generator set

Abstract

The utility model belongs to the technical field of noise reduction devices, and particularly relates to a generator set noise reduction device which comprises a noise reduction box, a generator set is installed in the noise reduction box, a box cover is installed at the upper end of the noise reduction box, a noise reduction plate is arranged on the inner wall of the noise reduction box, trapezoidal grooves are evenly formed in the inner wall of the noise reduction plate, and the trapezoidal grooves are communicated with the box cover. First sound-absorbing cotton is bonded to the end, away from an opening of the trapezoidal groove, of the trapezoidal groove, an air inlet cover and an air outlet cover are arranged at the left end and the right end of the noise reduction box correspondingly, V-shaped plates are installed in the air inlet cover and the air outlet cover correspondingly, the V-shaped tips of the V-shaped plates on the left side and the right side are away from each other, and second sound-absorbing cotton is bonded to the inner walls of the V-shaped plates. Inclined panels are arranged in the air inlet cover and the air outlet cover and located at the upper end and the lower end of an inner cavity of the air inlet cover and the upper end and the lower end of an inner cavity of the air outlet cover, and by means of the noise reduction device, noise transmission of the generator set can be effectively reduced, the noise reduction effect is improved, and interference to the surrounding environment and people in the working process of the generator set is reduced.

Description

Technical Field

[0001] The utility model relates to the field of noise reduction devices, in particular to a noise reduction device for a generator set. Background Art

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. It consists of a power system, an exhaust system, etc., and is driven by a turbine, a steam turbine, a diesel engine or other power machinery. It converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electrical energy and outputs it to electrical equipment for use.

[0003] The generator set will generate relatively large noise during operation, and a noise reduction device is needed to reduce the noise. Most of the existing noise reduction devices for generator sets reduce the noise by simply installing sound-absorbing cotton or sound-insulating cotton, and the noise reduction effect is poor. Therefore, the utility model provides a noise reduction device for generator sets. Utility Model Content

[0004] The purpose of the utility model is to provide a noise reduction device for a generator set to solve the above problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a noise reduction device for a generator set, comprising a noise reduction box, a generator set is installed in the noise reduction box, a box cover is installed at the upper end of the noise reduction box, a noise reduction plate is arranged on the inner wall of the noise reduction box, trapezoidal grooves are evenly opened on the inner wall of the noise reduction plate, a first sound-absorbing cotton is bonded to one end of the trapezoidal groove away from its opening, an air inlet hood and an air outlet hood are respectively arranged on the left and right ends of the noise reduction box, a V-shaped plate is installed in the air inlet hood and the air outlet hood, and the V-shaped tips of the V-shaped plates on the left and right sides are far away from each other, a second sound-absorbing cotton is bonded to the inner wall of the V-shaped plate, an inclined panel is arranged in the air inlet hood and the air outlet hood, the inclined panel is located at the upper and lower ends of the inner cavity of the air inlet hood and the air outlet hood, and the side of the inclined panels on the upper and lower sides that are close to each other is inclined toward the generator set, a third sound-absorbing cotton is bonded on the inclined panel, and an exhaust fan is connected to the air outlet hood by bolts.

[0006] Preferably, dustproof nets are installed on the outer ends of the air inlet cover and the air outlet cover.

[0007] Preferably, a V-shaped surface is provided on one side of the first sound-absorbing cotton facing the opening of the trapezoidal groove.

[0008] Preferably, a bracket is fixedly connected to the V-shaped plate, and the bracket is connected to the noise reduction plate by screws.

[0009] Preferably, an L-shaped groove is provided at the corner of the noise reduction plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1) In the utility model, after the noise generated during the operation of the generator set enters the trapezoidal groove, it can rebound through the trapezoidal groove and the first sound-absorbing cotton is installed in the trapezoidal groove to absorb the noise;

[0012] 2) The air inlet cover and the air outlet cover are provided to dissipate the heat from the inner cavity of the noise reduction box. A V-shaped plate and an inclined plate are installed in the air inlet cover and the air outlet cover, and the second sound-absorbing cotton and the third sound-absorbing cotton are respectively bonded to the V-shaped plate and the inclined plate, so that the noise can be effectively absorbed;

[0013] 3) Through the setting of the noise reduction device of the utility model, the noise propagation of the generator set can be effectively reduced, the noise reduction effect can be improved, and the interference of the generator set to the surrounding environment and people during operation can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the noise reduction box of the utility model;

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the V-shaped plate of the utility model.

[0018] In the figure: 1. Noise reduction box; 2. Air outlet hood; 3. Air inlet hood; 4. Dust net; 5. Box cover; 6. Noise reduction plate; 7. Generator set; 8. Trapezoidal groove; 9. L-shaped groove; 10. Inclined panel; 11. Third sound-absorbing cotton; 12. V-shaped plate; 13. Exhaust fan; 14. First sound-absorbing cotton; 15. V-shaped surface; 16. Second sound-absorbing cotton; 17. Bracket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Example:

[0023] See also Figure 1-4 The utility model provides a technical solution: a noise reduction device for a generator set, comprising a noise reduction box 1, a generator set 7 is installed in the noise reduction box 1, the generator set 7 is a diesel generator set, a box cover 5 is installed on the upper end of the noise reduction box 1, a noise reduction plate 6 is arranged on the inner wall of the noise reduction box 1, the plate body of the noise reduction plate 6 plays a certain role in sound insulation and noise reduction by increasing the thickness, the inner wall of the noise reduction plate 6 is evenly provided with trapezoidal grooves 8, and the first sound-absorbing cotton 14 is bonded to the end of the trapezoidal groove 8 away from the opening thereof, the left and right ends of the noise reduction box 1 are respectively provided with an air inlet cover 3 and an air outlet cover 2 for heat dissipation, and V-shaped plates 12 are installed in the air inlet cover 3 and the air outlet cover 2, The V-shaped tips of the V-shaped plates 12 on the left and right sides are far away from each other, and the inner wall of the V-shaped plate 12 is bonded with a second sound-absorbing cotton 16. The air inlet hood 3 and the air outlet hood 2 are both provided with inclined panels 10, and the inclined panels 10 are located at the upper and lower ends of the inner cavities of the air inlet hood 3 and the air outlet hood 2. The side of the inclined panels 10 on the upper and lower sides that are close to each other is inclined toward the generator set 7. With the design of the V-shaped plate 12, it is convenient to make the noise rebound. The third sound-absorbing cotton 11 is bonded to the inclined panel 10, and the air outlet hood 2 is connected with an exhaust fan 13 by bolts. Under the action of the exhaust fan 13, air enters the inner cavity of the noise reduction box 1 from the air inlet hood 3 and is discharged through the air outlet hood 2.

[0024] Dust-proof nets 4 are installed at the outer ends of the air inlet cover 3 and the air outlet cover 2 to reduce the entry of impurities such as dust.

[0025] A V-shaped surface 15 is provided on one side of the first sound-absorbing cotton 14 facing the opening of the trapezoidal groove 8 to facilitate better contact with noise and improve the noise reduction effect of the device.

[0026] A bracket 17 is fixedly connected to the V-shaped plate 12 , and the bracket 17 is connected to the noise reduction plate 6 via screws.

[0027] An L-shaped groove 9 is provided at the corner of the noise reduction plate 6 to facilitate multiple rebound of noise.

[0028] Working principle: the noise generated during the operation of the generator set 7 can be soundproofed and reduced to a certain extent under the action of the noise reduction plate 6. After the noise enters the trapezoidal groove 8, it can rebound through the trapezoidal groove 8, and a first sound-absorbing cotton 14 is installed in the trapezoidal groove 8 to absorb the noise. The air inlet hood 3 and the air outlet hood 2 are arranged to dissipate heat from the inner cavity of the noise reduction box 1. Under the action of the exhaust fan 13, air enters the inner cavity of the noise reduction box 1 from the air inlet hood 3 and is discharged through the air outlet hood 2. A V-shaped plate 12 and an inclined panel 10 are installed in the air inlet hood 3 and the air outlet hood 2, and a second sound-absorbing cotton 16 and a third sound-absorbing cotton 11 are respectively bonded to the V-shaped plate 12 and the inclined panel 10, which can effectively absorb the noise, effectively reduce the noise propagation of the generator set 7, improve the noise reduction effect, and reduce the interference of the generator set 7 to the surrounding environment and people during operation.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a generator set, comprising a noise reduction box (1), a generator set (7) is installed in the noise reduction box (1), and a box cover (5) is installed on the upper end of the noise reduction box (1), characterized in that: The inner wall of the noise reduction box (1) is provided with a noise reduction plate (6), the inner wall of the noise reduction plate (6) is evenly provided with trapezoidal grooves (8), the end of the trapezoidal groove (8) away from the opening thereof is bonded with a first sound-absorbing cotton (14), the left and right ends of the noise reduction box (1) are respectively provided with an air inlet cover (3) and an air outlet cover (2), the air inlet cover (3) and the air outlet cover (2) are both installed with a V-shaped plate (12), and the V-shaped tips of the V-shaped plates (12) on the left and right sides are away from each other, and the V-shaped plates (12) A second sound-absorbing cotton (16) is bonded to the inner wall; an inclined panel (10) is provided in the air inlet hood (3) and the air outlet hood (2); the inclined panel (10) is located at the upper and lower ends of the inner cavity of the air inlet hood (3) and the air outlet hood (2); the side of the inclined panels (10) on the upper and lower sides that are close to each other is inclined toward the generator set (7); a third sound-absorbing cotton (11) is bonded to the inclined panel (10); and an exhaust fan (13) is connected to the air outlet hood (2) by bolts.

2. A generator set noise reduction device according to claim 1, characterized in that: The outer ends of the air inlet cover (3) and the air outlet cover (2) are both installed with dustproof nets (4).

3. A generator set noise reduction device according to claim 1, characterized in that: A V-shaped surface (15) is provided on one side of the first sound-absorbing cotton (14) facing the opening of the trapezoidal groove (8).

4. A generator set noise reduction device according to claim 1, characterized in that: A bracket (17) is fixedly connected to the V-shaped plate (12), and the bracket (17) is connected to the noise reduction plate (6) via screws.

5. The noise reduction device for a generator set according to claim 1, characterized in that: An L-shaped groove (9) is provided at a corner of the noise reduction plate (6).

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