CN208024464U - A ventilation and noise reduction system for a diesel generator set - Google Patents

Abstract

The utility model discloses a ventilation and noise reduction system of a diesel generating set, which comprises a sound insulation machine room, a generating set and a ventilation device, wherein the ventilation device comprises an air inlet mechanism and an air exhaust mechanism, the air exhaust mechanism comprises an air exhaust and noise reduction box arranged in an air exhaust well and an exhaust pipe arranged between a heat radiation water tank of the generating set and the air exhaust and noise reduction box; a flexible connecting pipe is arranged between the exhaust pipe and the air outlet of the heat dissipation water tank; the air exhaust sound-deadening box comprises a fixed frame and a plurality of sound-absorbing plates which are inserted on the fixed frame side by side, wherein each sound-absorbing plate comprises a shell body consisting of metal screen meshes, a sound-absorbing layer arranged in the shell body and a dustproof sleeve wrapped outside the shell body. The noise of the generator set of the utility model is silenced through the air inlet sound-deadening box and the air exhaust sound-deadening box, thus improving the sound insulation and noise reduction performance of the generator set; dust cover on the abatvoix can block and filter the dust in the air, improves exhaust air quality, and the dismantlement that simultaneously can be quick is washd for the sound absorbing performance on sound absorbing layer can remain stable.

Description

A ventilation and noise reduction system for a diesel generator set

technical field

The utility model relates to the field of noise reduction for generators, in particular to a ventilation and noise reduction system for a diesel generator set.

Background technique

At present, due to the large increase in electricity demand, the power supply is often unable to adapt. Diesel generator sets are widely used in ports, factories, enterprises, hotels, residential areas, mines, and tunnels to provide users with emergency or conventional power supply. In order to ensure the use of generator sets Safety, the generator set machine room is set up as an independent machine room. Due to the large power of the generator set, the vibration and noise generated are also relatively large. The previous machine room was simply made of iron or wood or cement concrete, which can only play a role in shielding the wind and rain, and cannot isolate or weaken the working time of the generator set. resulting vibration and noise. The generator set emits a lot of noise when it is in operation. In addition to the exhaust gas emitted by the generator, the noise will also be transmitted out of the machine room through the ventilation system of the diesel generator set. Under the social status quo of increasingly serious noise pollution, diesel must be treated The ventilation system of the generator set is designed for noise reduction.

Utility model content

The technical problem to be solved by the utility model is to provide a ventilation and noise reduction system for a diesel generator set to solve the problems raised in the above-mentioned background technology in view of the defects in the above-mentioned prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows: a ventilation and noise reduction system for a diesel generator set, including a sound-proof machine room, a generator set and a ventilation device, and the ventilation device includes a ventilation shaft connected to the sound-proof machine room. Wind mechanism, an exhaust mechanism connected with the exhaust shaft of the soundproof machine room, the air inlet mechanism and the exhaust mechanism are relatively arranged on both sides of the generating set; the exhaust mechanism is connected with the cooling water tank of the generating set, and the exhaust The mechanism includes an exhaust air silencer box arranged in the exhaust shaft, an exhaust pipe arranged between the heat dissipation water tank of the generator set and the exhaust air silencer sound box; a flexible connecting pipe is arranged between the exhaust pipe and the air outlet of the heat dissipation water tank; The exhaust and silencer box is composed of a fixed frame and a plurality of sound-absorbing panels inserted side by side on the fixed frame, and the sound-absorbing panels are arranged along the exhaust direction of the vertical exhaust pipe; the sound-absorbing panels include metal screens The casing, the sound-absorbing layer arranged in the casing and the dustproof cover wrapped outside the casing.

As a further elaboration to the above-mentioned technical scheme:

In the above technical solution, the air intake mechanism includes an air intake silencer box arranged in the air intake shaft, and the sound insulation machine room is opened with an air inlet leading to the air intake silencer box, and the air intake is provided with a device for adjusting the air intake volume. Air inlet louvers; the air inlet muffler box includes a plurality of mufflers and a support frame for fixing the mufflers side by side in the air inlet shaft, and the mufflers are arranged parallel to the air inlet direction of the air inlet.

In the above technical solution, the soundproof machine room is opened with an exhaust port leading to the exhaust sound box, and the exhaust pipe is fixed at the exhaust port; the exhaust pipe is in the shape of a square platform, and the exhaust The nozzle area of the end of the air duct near the air exhaust port is greater than the nozzle area of the end near the air outlet of the cooling water tank.

In the above technical solution, an angle steel flange is provided between the exhaust pipe and the flexible pipe, and one end of the flexible pipe is sleeved on one end of the angle steel flange; Assemblies, the fixed assembly is composed of a pull nail and a bead, and the bead is set on the outside of the flexible pipe. and angle steel flanges.

In the above technical solution, the soft connecting pipe is a canvas pipe or a sound insulation felt pipe.

In the above technical solution, the sound-absorbing layer is a fireproof glass sound-absorbing cotton layer.

In the above technical solution, the dustproof cover is a glass fiber cloth cover.

Compared with the prior art, the beneficial effect of the utility model is that the noise of the generator set of the utility model is silenced through the air inlet and exhaust silencer boxes, so as to prevent the noise from being transmitted from the air inlet shaft and the exhaust shaft, and improve the power generation efficiency. The sound insulation and noise reduction performance of the unit; the dust cover on the sound-absorbing panel can block the dust in the air, so that the content of dust particles in the air discharged through the exhaust silencer can be reduced, and the quality of the discharged air can be improved; each sound-absorbing panel is covered separately With a dust cover, after a period of use, the dust cover can be quickly removed for cleaning, improving the efficiency of cleaning and maintenance, ensuring the cleanliness of the sound-absorbing layer, so that the sound-absorbing performance of the sound-absorbing layer can be kept stable, while ensuring that the exhaust air volume is not It will be reduced; the soft joint sewn by the sound insulation felt absorbs part of the noise, further improving the performance of sound insulation and noise reduction.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the partial structure of the exhaust mechanism;

Fig. 3 is a schematic structural view of the air inlet sound elimination sound box or the exhaust air sound elimination sound box;

Fig. 4 is a schematic diagram of the structure of the sound-absorbing panel.

In the figure: 1. Generator set; 11. Cooling water tank; 2. Soundproof machine room; 21. Air intake shaft; 22. Air intake shutter; 23. Air intake; 24. Exhaust shaft; Wind elimination sound box; 4, exhaust air elimination sound box; 41, fixed frame; 42, sound-absorbing board; 421, sound-absorbing layer; 422, shell; 423, dust cover; 5, exhaust pipe; Angle steel flange; 81, bead; 82, pull nail.

Detailed ways

Below in conjunction with accompanying drawing 1 to accompanying drawing 4 the utility model is described in further detail.

The embodiments described by referring to the figures are exemplary and are intended to explain the present application and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "several" and "plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In this application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "below" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

As shown in Figures 1-4, a ventilation and noise reduction system for a diesel generator set includes a soundproof machine room 2, a generator set 1, and a ventilation device. The ventilation device includes an air intake mechanism connected to the air inlet shaft 21 of the soundproof machine room The exhaust mechanism connected to the exhaust shaft 24 of the machine room 2, the air intake mechanism and the exhaust mechanism are relatively arranged on both sides of the generator set 1; the exhaust mechanism is connected to the cooling water tank 11 of the generator set 1, and the exhaust mechanism includes The exhaust sound box 4 in the well 24, the exhaust pipe 5 arranged between the cooling water tank 11 of the generator set 1 and the exhaust sound box 4; a soft connecting pipe is arranged between the exhaust pipe 5 and the air outlet of the cooling water tank 11 6. The exhaust and silencer box 4 is composed of a fixed frame 41 and a plurality of sound-absorbing panels 42 inserted side by side on the fixed frame 41. The sound-absorbing panels 42 are arranged along the exhaust direction of the vertical exhaust pipe 5; the sound-absorbing panels 42 are composed of metal screens. A shell 422 composed of mesh, a sound-absorbing layer 421 disposed inside the shell 422 , and a dust jacket 423 wrapped outside the shell 422 .

As shown in Fig. 3-4, the air intake mechanism includes an air intake silencer box 3 arranged in the air intake shaft 21, and the sound insulation machine room 2 is opened with an air inlet 23 leading to the air intake silencer box 3, and the air intake 23 is provided with an adjustable The air intake louver 22 of the air intake volume; the air intake muffler box 3 includes a plurality of mufflers and a support frame that a plurality of mufflers are fixed side by side in the air inlet shaft 21 , and the mufflers are arranged parallel to the air inlet direction of the air inlet 23 . Wherein, the structure of the sound absorbing plate is the same as that of the sound absorbing plate 42

The soundproof machine room 2 has an exhaust outlet 25 leading to the exhaust sound box 4, and the exhaust pipe 5 is fixed at the exhaust outlet 25; The nozzle area of one end is greater than the nozzle area near the cooling water tank 11 air outlet one end.

As shown in Figure 2, an angle steel flange 7 is set between the exhaust pipe 5 and the soft joint 6, and one end of the soft joint 6 is sleeved on one end of the angle steel flange 7; Fixing assembly, the fixing assembly is composed of pull nails 82 and bead 81, the bead 81 is sleeved on the outside of the flexible joint 6, the two ends of the pull rivet 82 are fixedly connected with the angle steel flange 7 and the bead 81 respectively, and the flexible joint 6 is fixed by the pull rivet 82 Between the bead 81 and the angle steel flange 7 . The vibration of the generator set 1 is prevented from being transmitted to the wall of the soundproof machine room 2 through the flexible joint 6, and the flexible joint 6, which frequently vibrates, can be firmly connected to one end of the exhaust pipe 5 through the fixing assembly and the angle steel flange 7.

The soft connection 6 is a soft connection 6 made of sound insulation felt. The sound-absorbing layer 421 is a fireproof glass sound-absorbing cotton layer. The dustproof cover 423 is a glass fiber cloth cover.

The noise of generator set 1 is muffled by the air inlet silencer box 3 and the exhaust wind silencer box 4, so as to avoid the noise from passing out from the air inlet shaft 21 and the exhaust shaft 24, so as to improve the sound insulation and noise reduction of the generator set 1; The dust-proof cover 423 can block the dust in the air, so that the content of dust particles in the air discharged by the exhaust air silencer box 4 is reduced, and the quality of the discharged air is improved; each sound-absorbing panel 42 is separately covered with a dust-proof cover 423. After a period of time, the dust cover 423 can be quickly removed for cleaning, improving the efficiency of cleaning and maintenance, ensuring the cleanliness of the sound-absorbing layer 421, so that the sound-absorbing performance of the sound-absorbing layer 421 can be kept stable, while ensuring that the exhaust air volume will not decrease; The soft joint 6 made of sound insulation felt absorbs part of the noise and improves the performance of sound insulation and noise reduction.

The above is not any limitation to the technical scope of the present utility model, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (7)

1. A ventilation and silencing system for a diesel generator set, comprising a soundproof machine room, a generator set and a ventilator, characterized in that: said ventilation device comprises an air intake mechanism connected with the air inlet shaft of the soundproof machine room, and an exhaust shaft of the soundproof machine room The connected exhaust mechanism, the air inlet mechanism and the exhaust mechanism are relatively arranged on both sides of the generator set; the exhaust mechanism is connected with the cooling water tank of the generator set, and the exhaust mechanism includes an exhaust The wind elimination sound box, the exhaust pipe arranged between the heat dissipation water tank of the generator set and the exhaust wind elimination sound box; a flexible pipe is arranged between the exhaust pipe and the air outlet of the heat dissipation water tank; And a plurality of sound-absorbing boards inserted side by side on the fixed frame, the sound-absorbing boards are arranged along the exhaust direction of the vertical exhaust pipe; layer and a dust jacket wrapped around the outside of the housing. 2. The ventilation and noise reduction system of a diesel generator set according to claim 1, wherein the air intake mechanism includes an air intake silencer box arranged in the air intake shaft, and the sound insulation machine room is opened with a The air inlet of the wind elimination sound box, the air inlet is provided with the air intake louvers for adjusting the air intake volume; the air inlet sound elimination sound box includes a plurality of sound-absorbing panels and a support frame that a plurality of sound-absorbing panels are fixed side by side in the air-intake shaft, the The sound absorbing plate is arranged parallel to the air inlet direction of the air inlet. 3. The ventilation and noise reduction system of a diesel generator set according to claim 1, wherein the sound insulation machine room is provided with an exhaust port leading to the exhaust sound suppression box, and the exhaust pipe is fixed on the exhaust air mouth; the exhaust pipe is in the shape of a square platform, and the area of the mouth of the exhaust pipe near the air outlet is greater than that of the end near the air outlet of the cooling water tank. 4. The ventilation and silencing system of a diesel generator set according to claim 3, characterized in that, an angle steel flange is arranged between the exhaust pipe and the flexible joint, and one end of the flexible joint is sleeved on the angle steel flange. One end of the flange; a fixing assembly is arranged between the angle steel flange and the flexible pipe. The flange and the bead are fixedly connected, and the soft joint is fixed between the bead and the angle steel flange through a pull nail. 5. A ventilation and noise reduction system for a diesel generator set according to claim 4, characterized in that, the soft joint is a canvas pipe or a sound insulation felt pipe. 6. A ventilation and noise reduction system for a diesel generator set according to claim 1, wherein the sound-absorbing layer is a fireproof glass sound-absorbing cotton layer. 7. The ventilation and noise reduction system of a diesel generator set according to claim 1, wherein the dustproof cover is a glass fiber cloth cover.