CN207517471U - Compound inlet box - Google Patents

Abstract

The utility model relates to a composite air intake box. It is characterized in that it includes a sound-absorbing block, and the sound-absorbing block has flat holes parallel to each other, and an outer cover and an inner cover are respectively arranged on the outside and inside of the sound-absorbing block. The vertical and upper sides of the mouth of the outer cover are connected to the corresponding sides of the sound-absorbing block, and there is an air inlet between the lower side of the mouth of the outer cover and the sound-absorbing block to facilitate the entry of natural wind. The four corners of the mouth of the inner cover are connected to the four corners of the sound-absorbing block by means of short pipes, so that there is a space between the mouth of the inner cover and the sound-absorbing block to be used as an exhaust port. There is an air-collecting and guiding ring in the inner cover, and one end of the air-collecting and guiding ring is connected with the sound-absorbing block, and the flat holes are all located in the air-collecting and guiding ring. This composite air intake box not only has the function of ventilation and heat dissipation, but also has the function of sound insulation and sound absorption. The use of the composite air intake box is beneficial to the health and normal life of the surrounding residents. It is suitable for natural ventilation and heat dissipation in the main transformer room of the substation.

Description

Composite air box

technical field

The utility model relates to an air intake box. Specifically, it is a composite air intake box installed in the air inlet of the main transformer room of the substation and matched with the exhaust port for natural ventilation and heat dissipation of the main transformer room.

Background technique

At present, in the power industry, louvers are installed in the air inlet of the main transformer room of the substation and distribution station, so as to match with the exhaust port to realize natural ventilation and heat dissipation of the main transformer room. Since the louvers only have the function of ventilation and heat dissipation, and have no function of sound insulation and sound absorption, the noise generated during the operation of the main transformer will spread outward through the louvers, which is not conducive to the health and normal life of the surrounding residents.

Utility model content

The problem to be solved by the utility model is to provide a composite air intake box. This composite air intake box not only has the function of ventilation and heat dissipation, but also has the function of sound insulation and sound absorption. The use of the composite air intake box is beneficial to the health and normal life of the surrounding residents.

The above-mentioned problem to be solved by the utility model is realized by the following technical solutions:

The composite air intake box of the utility model is characterized in that it includes a sound-absorbing block, the sound-absorbing block has flat holes parallel to each other, and an outer cover and an inner cover are respectively arranged on the outside and inside of the sound-absorbing block. The vertical and upper sides of the mouth of the outer cover are connected to the corresponding sides of the sound-absorbing block, and there is an air inlet between the lower side of the mouth of the outer cover and the sound-absorbing block to facilitate the entry of natural wind. The four corners of the mouth of the inner cover are all connected with the four corners of the sound-absorbing block by means of short pipes, so that there is a space between the mouth of the inner cover and the sound-absorbing block to be used as an exhaust port. There is an air-collecting and guiding ring inside the inner cover, and one end of the air-collecting and guiding ring is connected with the sound-absorbing block, and the flat holes are all located in the air-collecting and guiding ring.

A further improvement of the utility model is that the sound-absorbing block covered by the outer cover has a deflector on one side. The upper edge of the deflector is connected to the sound-absorbing block between the lowermost flat hole and the air inlet, and the lower edge of the deflector is arranged in an upwardly inclined shape.

Wherein, the sound-absorbing block is made of glass wool board.

A further improvement of the utility model is that the inner cover and the outer cover both contain a surface layer and an inner layer, the surface layer is a steel plate, and the inner layer is a glass wool board uniformly distributed with punched holes.

A further improvement of the utility model is that the flat hole is a horizontal hole.

A further improvement of the utility model is that the flat hole is a vertical hole.

A further improvement of the utility model is that the air inlet is formed by removing the lower cover wall of the outer cover.

A further improvement of the utility model is that there is a protective net in the air inlet.

Because the composite air intake box of the present utility model contains sound-absorbing blocks. Flat holes parallel to each other are processed on the sound-absorbing block, and an outer cover and an inner cover are respectively arranged on the outside and inside of the sound-absorbing block. The vertical edge and the upper edge of the mouth of the outer cover are connected to the corresponding edges of the sound-absorbing block, and there is an air inlet between the lower edge of the mouth of the outer cover and the sound-absorbing block to facilitate the entry of natural wind. The four corners of the mouth of the inner cover are connected to the four corners of the sound-absorbing block by means of short tubes, so that there is a distance between the mouth of the inner cover and the sound-absorbing block. There is an air-collecting and guiding ring in the inner cover, and one end of the air-collecting and guiding ring is connected with the sound-absorbing block, and the flat holes are all located in the air-collecting and guiding ring. When working, the external natural wind enters the outer cover from the air inlet, passes through the flat hole and the retaining ring on the sound-absorbing block successively under the action of the deflector, and then enters the inner cover from around the outer end of the retaining ring. Then, under the blocking of the inner cover, it flows to the surroundings of the inner cover, and is discharged from the distance between the inner cover and the sound-absorbing block and enters the main transformer room. Thereby, the ventilation and heat dissipation of the main transformer room can be realized. And because the materials used for the sound-absorbing block, the outer cover and the inner cover are glass wool boards, they have sound insulation and sound absorption functions, and can reduce the noise produced by the natural wind flowing through. The utility model not only has the function of ventilation and heat dissipation, but also has the function of reducing noise, and the functions are relatively complete. And because it has the function of reducing noise, it can reduce the noise generated during the operation of the main transformer and spread outward through the shutters, which is beneficial to the health and normal life of the surrounding residents.

Description of drawings

Fig. 1 is the structural representation of composite air intake box of the present utility model;

Fig. 2 is a sectional view along A-A of Fig. 1 .

Detailed ways

As shown in Figures 1 to 2, the composite air intake box of the present utility model contains a sound-absorbing block 5, and the sound-absorbing block 5 is processed from a glass wool board. The sound-absorbing block 5 is processed with three flat holes 4 parallel to each other. The flat holes 4 are horizontal holes or vertical holes. In this embodiment, they are horizontal holes. An outer cover 3 and an inner cover 10 are arranged on the outside and inside of the sound-absorbing block 5 respectively. The inner cover 10 and the outer cover 3 both contain a surface layer and an inner layer, the surface layer is a steel plate, and the inner layer is a glass wool board. The vertical edge and the upper edge of the mouth of the outer cover 3 are connected to the corresponding sides of the sound-absorbing block 5, and an air inlet 1 for natural wind to enter is left between the lower edge of the mouth of the outer cover 3 and the sound-absorbing block 5. The air inlet 1 is formed by removing the lower cover wall of the outer cover 3 , and a protective net 2 is arranged inside the air inlet 1 .

The four corners of the mouth of the inner cover 10 are connected to the four corners of the sound-absorbing block 5 by means of short tubes 6, so that there is a first distance 12 between the mouth of the inner cover 10 and the sound-absorbing block 5, which is used as an exhaust port. The inner cover 10 is provided with an air-collecting guide ring 7, one end of the air-collecting guide ring 7 is connected to the sound-absorbing block 5, and a second distance 11 is left between the other end of the air-collecting guide ring 7 and the bottom of the inner cover 10, The flat holes 4 are located in the air collecting guide ring 7 .

Wherein, a deflector 13 is arranged on one side of the sound-absorbing block 5 covered by the outer cover 3 . The upper edge of the deflector 13 is connected to the sound-absorbing block 5 between the lowermost flat hole 4 and the air inlet 1, and the lower edge of the deflector 13 is arranged in an upwardly inclined shape.

When in use, a through hole is processed on the wall of the main transformer room, and the composite air intake box of the utility model is installed in the through hole.

Claims (8)

1. The composite air intake box is characterized in that it includes a sound-absorbing block, and there are flat holes parallel to each other on the sound-absorbing block, and an outer cover and an inner cover are respectively arranged on the outside and inside of the sound-absorbing block; the vertical edge and the upper edge of the mouth of the outer cover are They are all connected to the corresponding sides of the sound-absorbing block, and there is an air inlet between the lower side of the mouth of the outer cover and the sound-absorbing block to facilitate the entry of natural wind; the four corners of the mouth of the inner cover are connected to the four corners of the sound-absorbing block by means of short tubes, There is a space between the mouth of the inner cover and the sound-absorbing block as an exhaust port; there is an air-collecting guide ring in the inner cover, and one end of the air-collecting guide ring is connected to the sound-absorbing block. inside the diversion circle. 2. The composite air intake box according to claim 1, characterized in that there is a deflector on one side of the sound-absorbing block covered by the outer cover; the upper side of the deflector is connected to the lowermost flat hole and the inlet On the sound-absorbing block between the gas ports, the lower side of the deflector is arranged in an upwardly inclined shape. 3. The composite air intake box according to claim 1, characterized in that the sound-absorbing block is made of glass wool board. 4. The composite air intake box according to claim 1, wherein the inner cover and the outer cover all contain a surface layer and an inner layer, the surface layer is a steel plate, and the inner layer is evenly distributed with punched holes. Glass wool board. 5. The composite air intake box according to claim 1, characterized in that the flat holes are horizontal holes. 6. The composite air intake box according to claim 1, characterized in that the flat holes are vertical holes. 7. The composite air intake box according to claim 1, characterized in that the air inlet is formed by removing the lower cover wall of the outer cover. 8. The composite air intake box according to any one of claims 1 to 6, characterized in that there is a protective net inside the air intake.