A generator set with noise reduction function

Abstract

This utility model belongs to the field of generator set technology, specifically relating to a generator set with noise reduction function; it includes a generator set body fixedly installed on the top of a shock-absorbing base; a noise reduction shell is detachably installed on the top of the shock-absorbing base, the front side of the noise reduction shell has an opening, and a sealed soundproof door is hinged inside the opening; through slots are opened on both the left and right sides of the noise reduction shell, and mounting frames matching the positions of the through slots are fixedly installed on both the left and right sides of the noise reduction shell, and ventilation and noise reduction mechanisms are installed inside both mounting frames; this utility model has a simple and reasonable structure and design. In use, it uses a blower fan and an exhaust fan to form a directional airflow to dissipate heat from the generator set body. At the same time, the Z-shaped grooves of the rigid polyurethane sound-absorbing foam and the inclined sound-absorbing strips dissipate noise through reflection and sound absorption, thereby improving heat dissipation and reducing the noise generated during heat dissipation, effectively improving the service life of the generator set.

Description

Technical Field

[0001] This utility model belongs to the field of generator set technology, specifically relating to a generator set with noise reduction function. Background Technology

[0002] A generator set is a complete set of machinery that converts other types of energy into electrical energy. In terms of composition, it mainly includes key components such as a power system and an exhaust system. The "power source" that drives its operation can be a water turbine, a steam turbine, a diesel engine, or other suitable power machinery. Its energy conversion process is clear: first, these power machines convert the energy carried by the water flow, the energy of the airflow, the energy released by fuel combustion, or the energy produced by nuclear fission into mechanical energy; then, this mechanical energy is transferred to the generator; finally, the generator converts the mechanical energy into electrical energy, which is then delivered to the electrical equipment to meet actual electricity demand.

[0003] During the operation of generator sets, significant noise is generated. In existing technologies, encasing the generator set in a shell is the mainstream noise reduction solution. The principle is to use a metal or composite shell to block the transmission of noise. Although this noise reduction method is effective, the encasing of the shell directly restricts airflow, which is not conducive to the heat dissipation of the generator set and can easily affect the service life of the generator set. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a generator set with noise reduction function. During use, the generator set body is cooled by directional airflow formed by the blower and exhaust fan. At the same time, the Z-shaped groove of the rigid polyurethane sound-absorbing foam and the inclined sound-absorbing strip dissipate noise through reflection and sound absorption. While improving heat dissipation, the noise generated during heat dissipation is reduced, which effectively improves the service life of the generator set.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A generator set with noise reduction function, including

[0007] The generator set body is fixedly installed on the top of the shock-absorbing base;

[0008] The noise reduction shell is detachably installed on the top of the shock-absorbing base. The front of the noise reduction shell has an opening, and a sealed soundproof door is hinged inside the opening. The left and right sides of the noise reduction shell have through slots, and the left and right sides of the noise reduction shell are fixedly installed with mounting frames that match the positions of the through slots. Both mounting frames are equipped with ventilation and noise reduction mechanisms.

[0009] As a preferred technical solution, the ventilation and noise reduction mechanism includes rigid polyurethane sound-absorbing foam, which is fixedly installed inside the mounting frame. Several Z-shaped grooves are arranged vertically inside the rigid polyurethane sound-absorbing foam, and the two ends of the several Z-shaped grooves pass through the left and right sides of the rigid polyurethane sound-absorbing foam respectively.

[0010] Several inclined sound-absorbing strips are distributed inside the Z-shaped groove. The sound-absorbing strips are arranged in the Z-shaped groove at an angle that is not parallel to the incident direction of the sound wave, so that the sound wave is reflected multiple times in the Z-shaped groove and the sound energy is dissipated.

[0011] A blower fan and an exhaust fan are fixedly installed inside the mounting frames on the left and right sides, respectively, and the blower fan and exhaust fan are located between two rigid polyurethane sound-absorbing foams.

[0012] As a preferred technical solution, dustproof nets are installed on the two mounting frames on the side furthest from each other.

[0013] As a preferred technical solution, the noise reduction shell consists of a top plate and four vertical plates fixedly connected to the four sides of the top plate. The top plate and the four vertical plates are all made of metal sound insulation board, damping composite board and perforated composite sound absorption board spliced ​​together in sequence, with an air layer left between the metal sound insulation board and the damping composite board.

[0014] As a preferred technical solution, the shock-absorbing base includes an assembly box, in which several damping shock absorbers are evenly arranged on the bottom side, and an assembly plate is fixedly installed on the top of the several damping shock absorbers. Shock-absorbing cotton is fixedly installed around the periphery of the assembly plate, and the generator set body is fixedly installed on the top of the assembly plate.

[0015] As a preferred technical solution, a EPDM rubber sealing strip is fixedly installed around the periphery of the sealed soundproof door.

[0016] The beneficial effects of this utility model are:

[0017] 1. Vibration-damping base controls noise at the source: The damping shock absorber in the assembly box absorbs the vibration energy of the unit body, reducing the transmission of vibration and component wear; the assembly plate ensures the unit is installed stably, and the surrounding shock-absorbing cotton further buffers vibration, making the operation smoother and the noise lower.

[0018] 2. Noise Reduction Shell with Multiple Noise Insulation: The top and vertical panels have a layered structure of metal sound insulation panels, damping composite panels, and perforated composite sound absorption panels, which progressively block, weaken, and absorb noise; the air layer between the panels enhances sound insulation, and the closed structure reduces sound leakage from gaps, making it suitable for multiple scenarios and structurally stable.

[0019] 3. Ventilation and noise reduction mechanism: The Z-shaped grooves and inclined sound-absorbing strips of rigid polyurethane sound-absorbing foam dissipate noise through reflection and sound absorption; the blower and exhaust fan form directional airflow for heat dissipation, and the dust filter prevents dust from entering, while reducing heat dissipation noise. Attached Figure Description

[0020] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0023] Figure 3 This is a schematic diagram of the assembly of the generator set body and the shock-absorbing base of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly of the mounting plate and the damping shock absorber of this utility model.

[0025] Figure 5 This is a schematic diagram of the ventilation and noise reduction mechanism of this utility model;

[0026] Figure 6 This is a partial cross-sectional structural diagram of the present invention;

[0027] Figure 7 for Figure 6 A magnified structural diagram at point A.

[0028] Reference numerals: 1. Vibration damping base; 11. Generator set body; 101. Assembly box; 102. Damping shock absorber; 103. Assembly plate; 104. Vibration damping cotton; 2. Noise reduction shell; 21. Sealed soundproof door; 22. Through groove; 23. Mounting frame; 231. Dustproof net; 31. Ventilation and noise reduction mechanism; 31. Rigid polyurethane sound-absorbing foam; 32. Z-shaped groove; 33. Sound-absorbing strip; 34. Blowing fan; 35. Exhaust fan. Detailed Implementation

[0029] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-7 As shown, this utility model discloses a generator set with noise reduction function, including...

[0031] Vibration damping base 1, with generator set body 11 fixedly installed on top of vibration damping base 1;

[0032] The noise reduction shell 2 is detachably installed on the top of the shock-absorbing base 1. The noise reduction shell 2 has an opening on the front side, and a sealed soundproof door 21 is hinged inside the opening. The noise reduction shell 2 has through slots 22 on both the left and right sides. The noise reduction shell 2 has mounting frames 23 that match the positions of the through slots 22 on both the left and right sides. The two mounting frames 23 are equipped with ventilation noise reduction mechanisms 3. The specific ventilation noise reduction mechanism 3 includes rigid polyurethane sound-absorbing foam 31, which is fixedly installed inside the mounting frame 23. The rigid polyurethane sound-absorbing foam 31 has several Z-shaped slots 32 arranged vertically inside it, and the two ends of the several Z-shaped slots 32 pass through the left and right sides of the rigid polyurethane sound-absorbing foam 31 respectively.

[0033] Several inclined sound-absorbing strips 33 are distributed inside the Z-shaped groove 32. The sound-absorbing strips 33 are arranged in the Z-shaped groove 32 at an angle not parallel to the incident direction of the sound wave, so as to cause the sound wave to be reflected multiple times in the Z-shaped groove 32 and dissipate the sound energy.

[0034] A blower fan 34 and an exhaust fan 35 are fixedly installed inside the mounting frames 23 on the left and right sides, respectively, with the blower fan 34 and the exhaust fan 35 located between two rigid polyurethane sound-absorbing foams 31.

[0035] When the generator set 11 generates electricity during operation, the vibration damping base 1 buffers vibrations and reduces the transmission of vibration noise. The noise reduction shell 2 and the sealed soundproof door 21 form a closed space. At the same time, the blower fan 34 and exhaust fan 35 on the left and right sides start, forming a directional airflow: external air enters through the polyurethane rigid sound-absorbing foam 31 on one side of the mounting frame 23, flows through the generator set 11 to remove heat, and is discharged from the mounting frame 23 on the other side. When the airflow passes through the Z-shaped groove 32, the inclined sound-absorbing strip 33 inside causes the noise to be reflected and dissipated multiple times in the groove, preventing noise leakage during ventilation. At the same time, the polyurethane rigid sound-absorbing foam 31 itself is also a sound-absorbing and noise-reducing material. When the sound wave enters the Z-shaped groove 32, the Z-shaped groove 32 itself forms a reflective structure. By using the principle of reflection and sound absorption, the noise reduction and sound absorption function is achieved. At the same time, the air intake and exhaust operations effectively reduce the noise generated during heat dissipation.

[0036] Dustproof nets 231 are installed on both mounting frames 23 on opposite sides; this prevents external dust from entering the noise reduction shell 2 while allowing for ventilation and heat dissipation, thus achieving a good dustproof effect.

[0037] The noise reduction shell 2 consists of a top plate and four vertical plates fixedly connected to the four sides of the top plate. The top plate and the four vertical plates are all made of metal sound insulation board, damping composite board and perforated composite sound absorption board spliced ​​together in sequence, with an air layer left between the metal sound insulation board and the damping composite board.

[0038] When in use, the noise reduction shell 2 of the generator set adopts a multi-layer structure with the top plate and four vertical plates of the noise reduction shell 2 being spliced ​​together in sequence with metal sound insulation plate, damping composite plate and perforated composite sound absorption plate. During operation, the metal sound insulation plate can directly block the outward transmission of the operating noise of the generator set body 1, the damping composite plate can effectively weaken the additional noise generated by the vibration of the shell itself, and the perforated composite sound absorption plate further absorbs the residual sound energy that penetrates the first two layers of the structure. Through the progressive effects of sound insulation, vibration reduction and sound absorption, the noise leakage is greatly reduced, and efficient noise reduction is achieved.

[0039] In terms of acoustic performance optimization, the air layer reserved between the metal sound insulation board and the damping composite board plays a key auxiliary role. The acoustic impedance characteristics of the air layer itself can complement the two layers of boards, further blocking the transmission of sound waves and preventing noise from directly penetrating through the gaps between the boards. This further enhances the noise reduction capability of the multi-layer composite structure and improves the overall acoustic performance.

[0040] In terms of practical adaptability, the noise reduction shell 2 is a closed structure composed of a top plate and four vertical plates, which can closely fit the shape of the generator set and reduce noise leakage caused by gaps in the shell. At the same time, the top plate and the vertical plates are fixedly connected to ensure the overall structure of the shell is stable. Even in long-term use or under slight vibration, it can maintain its shape and adapt to the use needs of various scenarios such as emergency power supply and field operation, taking into account both noise reduction effect and reliability.

[0041] The shock-absorbing base 1 includes an assembly box 101. Several damping shock absorbers 102 are evenly arranged on the bottom side inside the assembly box 101. An assembly plate 103 is fixedly installed on the top of the several damping shock absorbers 102. Shock-absorbing cotton 104 is fixedly installed around the periphery of the assembly plate 103. The generator set body 11 is fixedly installed on the top of the assembly plate 103.

[0042] First, the damping shock absorbers 102, evenly arranged on the bottom side inside the assembly box 101, effectively absorb the vibration energy generated by the generator set 11 during operation, reducing the transmission of vibration to the outside and lowering vibration-induced noise at the source. This also reduces wear and tear on the unit's components, extending the equipment's service life. Second, the assembly plate 103, supported by the damping shock absorbers 102, provides a stable mounting foundation for the generator set 11, ensuring the stability of the unit during operation and preventing vibration from being aggravated by unstable installation. Furthermore, the damping cotton 104 around the assembly plate 103 further buffers the vibration transmission between the assembly plate and the assembly box, filling gaps and enhancing the vibration damping effect, comprehensively reducing the impact of vibration and making the unit operate more smoothly and with lower noise.

[0043] The sealed soundproof door is fixedly installed with EPDM rubber sealing strips around its perimeter; the EPDM rubber sealing strips provide a better sealing effect after the sealed soundproof door is closed, preventing sound leakage.

[0044] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A generator set with noise reduction function, characterized in that: include The shock-absorbing base (1) has a generator set body (11) fixedly installed on its top. Noise reduction shell (2) is detachably installed on the top of the shock absorption base (1). The front side of the noise reduction shell (2) has an opening, and a sealed soundproof door (21) is hinged inside the opening. The left and right sides of the noise reduction shell (2) are provided with through slots (22). The left and right sides of the noise reduction shell (2) are fixedly installed with mounting frames (23) that match the position of the through slots (22). The two mounting frames (23) are both equipped with ventilation and noise reduction mechanisms (3).

2. A generator set with noise reduction function according to claim 1, characterized in that: The ventilation and noise reduction mechanism (3) includes rigid polyurethane sound-absorbing foam (31), which is fixedly installed inside the mounting frame (23). Several Z-shaped grooves (32) are arranged vertically inside the rigid polyurethane sound-absorbing foam (31), and the two ends of the several Z-shaped grooves (32) pass through the left and right sides of the rigid polyurethane sound-absorbing foam (31). Several inclined silencing strips (33) are distributed inside the Z-shaped groove (32). The silencing strips (33) are arranged in the Z-shaped groove (32) at an angle that is not parallel to the incident direction of the sound wave, so as to make the sound wave reflect multiple times in the Z-shaped groove (32) and dissipate the sound energy. A blower fan (34) and an exhaust fan (35) are fixedly installed inside the mounting frames (23) on the left and right sides, respectively. The blower fan (34) and the exhaust fan (35) are located between two rigid polyurethane sound-absorbing foams (31).

3. The generator set with noise reduction function according to claim 2, characterized in that: Dustproof nets (231) are installed on the two mounting frames (23) on the side away from each other.

4. The generator set with noise reduction function according to claim 1, characterized in that: The noise reduction shell (2) consists of a top plate and four vertical plates fixedly connected to the four sides of the top plate. The top plate and the four vertical plates are all made of metal sound insulation board, damping composite board and perforated composite sound absorption board spliced ​​in sequence. An air layer is left between the metal sound insulation board and the damping composite board.

5. The generator set with noise reduction function according to claim 1, characterized in that: The shock-absorbing base (1) includes an assembly box (101). Several damping shock absorbers (102) are evenly arranged on the bottom side inside the assembly box (101). An assembly plate (103) is fixedly installed on the top of the several damping shock absorbers (102). Shock-absorbing cotton (104) is fixedly installed around the periphery of the assembly plate (103). The generator set body (11) is fixedly installed on the top of the assembly plate (103).

6. The generator set with noise reduction function according to claim 1, characterized in that: The sealed soundproof door (21) is fixedly installed with EPDM rubber sealing strips around its perimeter.

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