A noise reduction structure for a generator set

Abstract

The present invention discloses a noise reduction structure for a generator set, which includes a left vertical plate and a right vertical plate arranged symmetrically. Above the left vertical plate and the right vertical plate, there is a receiving plate. Below the receiving plate, a noise reduction part is further provided. The noise reduction part includes an upper plate. A through hole is opened in the middle of the upper plate. A cylindrical enclosing plate is arranged downward at the through hole. A second enclosing plate is arranged on the outer peripheral side of the enclosing plate. A sealing plate is arranged on the lower end surface of the enclosing plate. The lower end of the second enclosing plate is also connected to the sealing plate. Sound absorption holes are arranged in the lower part of the enclosing plate. Second sound absorption holes are arranged in the upper part of the second enclosing plate. First fixing parts and second fixing parts are further arranged in the upper part inside the enclosing plate. Column-shaped hole grooves are opened on both the first fixing parts and the second fixing parts. Sound insulation structures are arranged on the groove walls of the column-shaped hole grooves. By arranging the noise reduction structure below the generator set, the present invention effectively achieves a greater degree of sound insulation and noise reduction, improving the noise reduction effect. At the same time, by arranging two sets of noise elimination and reduction structures, namely the fixing parts and the sound absorption holes of the enclosing plate, the noise elimination effect is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of generator sets, and particularly to a noise reduction structure 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. During its operation, due to vibration, it will generate relatively large noise. Therefore, a noise reduction structure is required to reduce the noise generated by it to reduce the impact on the surrounding environment or workers. The existing Chinese invention patent application with the patent number 201710501670.5 discloses a noise reduction cover for a generator set. The noise reduction cover is arranged above the generator set, and at the same time, a noise reduction body is arranged on the noise reduction cover to achieve noise reduction. However, the vibration of the generator set generally occurs below, and only part of the noise will be transmitted to the noise reduction cover above the generator set. Therefore, the noise reduction effect on the generator set through the noise reduction cover is still relatively low. Summary of the Invention

[0003] The purpose of the present invention is to provide a noise reduction structure placed at the lower part of a generator set for the deficiencies existing in the above background art.

[0004] To achieve the above purpose, a noise reduction structure for a generator set of the present invention adopts the following technical solutions:

[0005] A noise reduction structure for a generator set includes a left vertical plate and a right vertical plate arranged symmetrically. Above the left vertical plate and the right vertical plate, there is a placement plate for accommodating the generator set. The placement plate includes a grid plate and a fixing plate arranged at intervals. The area of the grid plate is larger than that of the fixing plate. Below the placement plate, there is also a noise reduction part. The noise reduction part includes an upper plate. The left and right ends of the upper plate are respectively placed between the left vertical plate, the right vertical plate and the placement plate. A through hole is opened in the middle of the upper plate. The upper plate is arranged obliquely downward from the edge to the through hole. A cylindrical enclosure is arranged downward at the through hole. A second enclosure is arranged on the outer peripheral side of the enclosure. There is a spacing between the enclosure and the second enclosure. A sealing plate is arranged on the lower end surface of the enclosure, and the lower end of the second enclosure is also connected to the sealing plate. Sound absorption holes are arranged at the lower part of the enclosure, and second sound absorption holes are arranged at the upper part of the second enclosure. First fixing members and second fixing members are also arranged at the upper part inside the enclosure. A plurality of column-shaped hole grooves penetrating up and down are opened on both the first fixing members and the second fixing members. Sound insulation cotton is arranged on the groove walls of the column-shaped hole grooves. Circular plates with sound absorption holes are arranged in the column-shaped hole grooves. The column-shaped hole grooves on the first fixing members and the second fixing members are arranged in a staggered manner.

[0006] A further improvement of the noise reduction structure for a generator set of the present invention is that a buffer pad is arranged below the placement plate.

[0007] A further improvement of a noise reduction structure for a generator set in the present invention lies in that the upper plate, the surrounding plate, and the sealing plate are integrally formed. The upper plate, the surrounding plate, the second surrounding plate, and the sealing plate are made of heat-conducting materials. A cooling structure is provided below the noise reduction part. The cooling structure includes a cooling box with cooling water inside. The lower part of the second surrounding plate and the sealing plate are placed inside the cooling box.

[0008] A further improvement of a noise reduction structure for a generator set in the present invention lies in that both ends of the cooling box are connected to an external circulating water source.

[0009] A further improvement of a noise reduction structure for a generator set in the present invention lies in that a horizontally arranged first annular plate and a second annular plate are provided on the inner side wall of the surrounding plate. The first annular plate is above, and the inner diameter of the first annular plate is larger than the inner diameter of the second annular plate. The first fixing member and the second fixing member are respectively placed on the first annular plate and the second annular plate, and the outer diameter of the second fixing member is the same as the inner diameter of the first annular plate.

[0010] A further improvement of a noise reduction structure for a generator set in the present invention lies in that the upper ends of the left vertical plate and the right vertical plate are arranged in an L shape, including a vertical end and a horizontal end. A downward groove is provided on one side of the horizontal end close to the vertical end for the generator set housing to be embedded. Sound insulation cotton is also provided on the generator set housing.

[0011] A further improvement of a noise reduction structure for a generator set in the present invention lies in that multiple groups of left vertical plates and right vertical plates are provided and are spliced along the length direction.

[0012] A further improvement of a noise reduction structure for a generator set in the present invention lies in that a fan is provided at the lower end of the grid plate, and the fan is located between the upper plate and the grid plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the present invention, a noise reduction structure is provided below the generator set, effectively achieving a large degree of sound insulation and noise reduction, and improving the noise reduction effect. At the same time, two sets of noise elimination and reduction structures, namely fixing members and sound absorption holes on the surrounding plate, are provided to further enhance the noise elimination effect. On the other hand, a cooling structure is provided, including the use of a fan and water cooling for the heat-conducting plate, ensuring good heat dissipation while achieving sound insulation and noise reduction, and thus ensuring the normal operation of the generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure diagram of the present invention;

[0016] Figure 2 is Figure 1 a top view structure diagram of

[0017] In the figure: 1 left vertical plate, 2 right vertical plate, 3 accommodating plate, 31 grid plate, 32 fixing plate, 4 upper plate, 5 enclosing plate, 6 second enclosing plate, 7 sealing plate, 8 sound absorption hole, 9 second sound absorption hole, 10 first fixing member, 11 second fixing member, 12 cylindrical hole groove, 13 cooling box, 14 first annular plate, 15 second annular plate, 16 groove. Detailed implementation mode

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figure 1 and Figure 2 shown, a noise reduction structure for a generator set includes symmetrically arranged left vertical plate 1 and right vertical plate 2. An accommodating plate 3 for accommodating the generator set is arranged above the left vertical plate and the right vertical plate. The accommodating plate includes a grid plate 31 and a fixing plate 32 arranged at intervals. The grid plate and the fixing plate are bolted together, and the grid partition, the fixing plate and the left and right vertical plates are also connected by bolts. The area of the grid plate is larger than that of the fixing plate. A noise reduction part is also arranged below the accommodating plate. Specifically, the noise reduction part includes an upper plate 4. The left and right sides of the upper plate are respectively placed between the left vertical plate, the right vertical plate and the accommodating plate. A through hole is opened in the middle of the upper plate. The upper plate is arranged obliquely downward from the edge to the through hole. A cylindrical enclosing plate 5 is arranged downward at the through hole. A second enclosing plate 6 is arranged on the outer peripheral side of the enclosing plate. There is a distance between the enclosing plate and the second enclosing plate. A sealing plate 7 is arranged on the lower end surface of the enclosing plate. The lower end of the second enclosing plate is also connected to the sealing plate. Sound absorption holes 8 are arranged at the lower part of the enclosing plate, and second sound absorption holes 9 are arranged at the upper part of the second enclosing plate. Sound waves enter the enclosing plate, exit from the sound absorption holes to the space between the second enclosing plate and the enclosing plate, and then exit through the second sound absorption holes, realizing effective sound insulation and noise reduction. First fixing members 10 and second fixing members 11 are also arranged at the upper part inside the enclosing plate. A plurality of vertically penetrating cylindrical hole grooves 12 are opened on both the first fixing member and the second fixing member. Sound insulation cotton is arranged on the groove wall of the cylindrical hole groove, and a ring plate with sound absorption holes is arranged in the cylindrical hole groove. Specifically, an annular protruding part is arranged at the lower end of the cylindrical hole groove to facilitate the fixing of the sound insulation cotton and the ring plate. The cylindrical hole grooves on the first fixing member and the second fixing member are arranged in a staggered manner. A sound absorption structure is further arranged to insulate and reduce the noise generated by the vibration of the generator set. Further, a buffer pad is arranged below the accommodating plate. It plays a buffering role for the vibration generated by the generator set and reduces the noise generated by the vibration.

[0020] Furthermore, the upper plate, the surrounding plate, and the sealing plate are integrally formed. The upper plate, the surrounding plate, the second surrounding plate, and the sealing plate are made of heat-conducting materials. A cooling structure is provided below the noise reduction part. The cooling structure includes a cooling box 13. There is cooling water in the cooling box. The lower part of the second surrounding plate and the sealing plate are placed in the cooling box. Both ends of the cooling box are connected to an external circulating water source. Part of the heat generated by the generator set is transmitted to the upper plate, the surrounding plate, and the sealing plate through the air. Their ends are placed in the cooling water for heat dissipation and temperature reduction.

[0021] Furthermore, a first annular plate 14 and a second annular plate 15 are horizontally arranged on the inner side wall of the surrounding plate. The first annular plate is above. The inner diameter of the first annular plate is larger than the inner diameter of the second annular plate. The first fixing member and the second fixing member are respectively placed on the first annular plate and the second annular plate. The outer diameter of the second fixing member is the same as the inner diameter of the first annular plate. This facilitates the installation and disassembly of the first fixing member and the second fixing member.

[0022] Furthermore, the upper ends of the left vertical plate and the right vertical plate are arranged in an L shape, including a vertical end and a horizontal end. A downward groove 16 is provided on the side of the horizontal end close to the vertical end for the generator set housing to be embedded. Sound-absorbing cotton is also provided on the inner wall of the generator set housing. The setting of the groove facilitates the height adjustment of the generator set housing. Sound-damping holes can also be provided on the top of the housing.

[0023] Furthermore, multiple groups of left vertical plates and right vertical plates are provided and are spliced along the length direction. Similarly, multiple accommodating plates and noise reduction parts are provided and are arranged in a row.

[0024] Furthermore, a fan is provided at the lower end of the grid plate. The fan is located between the upper plate and the grid plate. Air cooling is used for heat dissipation.

[0025] The working principle of the present invention is as follows: The generator set is placed on the accommodating plate. The installation structure can be installed on the fixing plate, and then the generator set housing is arranged. When the generator set works, it vibrates at the lower part. Most of the generated noise sound waves are transmitted into the cylindrical hole grooves of the first fixing member and the second fixing member. The noise is reduced once by the sound-damping holes and the sound-absorbing cotton in the hole grooves, and then passes through the sound-absorbing holes to the area between the two surrounding plates, and then is transmitted out through the second sound-absorbing holes to achieve secondary noise reduction. At the same time, when the generator set works, it is cooled by air through the fan and heat is transferred to the cooling box for further heat dissipation, which overall ensures good noise reduction performance and heat dissipation performance.

[0026] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A noise reduction structure for a generator set, characterized in that: It includes a left vertical plate and a right vertical plate arranged symmetrically. Above the left vertical plate and the right vertical plate, there is a receiving plate for accommodating a generator set. The receiving plate includes a grid plate and a fixing plate arranged at intervals. The area of the grid plate is larger than that of the fixing plate. Below the receiving plate, there is also a noise reduction part. The noise reduction part includes an upper plate. The left and right side ends of the upper plate are respectively placed between the left vertical plate, the right vertical plate and the receiving plate. A through hole is opened in the middle of the upper plate. The upper plate is arranged to slope downward from the edge to the through hole. A cylindrical enclosing plate is arranged downward at the through hole. A second enclosing plate is arranged on the outer peripheral side of the enclosing plate. There is a spacing between the enclosing plate and the second enclosing plate. A sealing plate is arranged on the lower end surface of the enclosing plate. The lower end of the second enclosing plate is also connected to the sealing plate. Sound absorption holes are arranged in the lower part of the enclosing plate. Second sound absorption holes are arranged in the upper part of the second enclosing plate. First fixing parts and second fixing parts are also arranged in the upper part of the inner side of the enclosing plate. A number of columnar hole grooves penetrating up and down are opened on both the first fixing parts and the second fixing parts. Sound insulation cotton is arranged on the groove walls of the columnar hole grooves. Ring plates with sound absorption holes are arranged in the columnar hole grooves. The columnar hole grooves on the first fixing parts and the second fixing parts are arranged in a staggered manner. First annular plates and second annular plates arranged horizontally are arranged on the inner side wall of the enclosing plate. The first annular plate is on the upper side. The inner diameter of the first annular plate is larger than the inner diameter of the second annular plate. The first fixing parts and the second fixing parts are respectively placed on the first annular plate and the second annular plate. The outer diameter of the second fixing part is the same as the inner diameter of the first annular plate.

2. The noise reduction structure of a generator set according to claim 1, characterized in that: A buffer pad is arranged below the receiving plate.

3. A noise reduction structure for a generator set according to claim 1, characterized in that: The upper plate, the enclosing plate and the sealing plate are integrally formed. The upper plate, the enclosing plate, the second enclosing plate and the sealing plate are made of heat-conducting materials. A cooling structure is arranged below the noise reduction part. The cooling structure includes a cooling box with cooling water in it. The lower part of the second enclosing plate and the sealing plate are placed in the cooling box.

4. A noise reduction structure for a generator set according to claim 3, characterized in that: Both ends of the cooling box are connected to an external circulating water source.

5. A noise reduction structure for a generator set according to claim 1, characterized in that: The upper ends of the left vertical plate and the right vertical plate are arranged in an L shape, including a vertical end and a horizontal end. A downward groove is arranged on the side of the horizontal end close to the vertical end for the generator set housing to be embedded. Sound insulation cotton is also arranged on the generator set housing.

6. The noise reduction structure of a generator set according to claim 1, characterized in that: Multiple groups of the left vertical plates and the right vertical plates are provided and are spliced along the length direction.

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