Composite air duct low-noise diesel generating set

Abstract

The utility model relates to a low-noise diesel generating set with a combined type air duct. The low-noise diesel generating set comprises an air inlet and exhaust channel container and a set container which are detachably connected, the interior of the air inlet and exhaust channel container is divided into an air inlet chamber, a silencer chamber and an air exhaust chamber, a first air inlet array body and a second air inlet array body which are staggered in the air path direction are arranged in the air inlet chamber, and a first air exhaust array body is arranged in the air exhaust chamber. The unit container is internally divided into a unit air inlet chamber, a unit chamber and a unit air exhaust chamber in sequence in the air path advancing direction. A third air inlet array body is arranged in the unit air inlet chamber, and an oil tank chamber is arranged below the unit air inlet chamber; and a second exhaust array body is arranged in the unit exhaust chamber. The double-layer stacked container design is adopted, the noise reduction array body and the silencer are arranged in the upper-layer container, the unit can be far away from the air inlet and the air outlet, noise leakage is prevented, the upper-layer container and the lower-layer container can be transported in a separated mode in the transportation process, and the non-standard transportation problem of the container type high-power low-noise unit is solved.

Description

Technical Field

[0001] The present application relates to the technical field of silencing and noise reduction of diesel generator sets, and in particular to a composite air duct low-noise diesel generator set. Background Art

[0002] The existing air intake and exhaust schemes for container-type diesel generator sets are generally side air intake and end face exhaust, or end air intake and end face exhaust. On the one hand, these two schemes will cause the air intake and exhaust to be close to the diesel engine, making it easier for noise to leak from the air intake and exhaust, affecting the noise reduction effect of the unit; on the other hand, the noise reduction of the air intake and exhaust of the container-type diesel generator set mainly relies on the noise reduction array. When the air intake and exhaust are close to the diesel engine and the noise is easy to leak, more noise reduction arrays need to be set to deal with the leaked noise. However, adding more noise reduction arrays means an increase in the length of the unit. For high-power low-noise diesel generator sets, the external length dimension is close to the limit dimension for transportation, and excessive increase in length will lead to transportation difficulties. Summary of the invention

[0003] The purpose of the utility model is to provide a composite air duct low-noise diesel generator set, which adopts a double-layer stacked container design, arranges the noise reduction array and the muffler in the upper container, and arranges the unit in the lower container, which can not only keep the unit away from the air inlet and outlet to prevent noise leakage, but also can transport the upper and lower containers separately during transportation, thereby solving the problem of non-standard transportation of container-type high-power low-noise units.

[0004] The technical solution adopted by the utility model is: a composite air duct low-noise diesel generator set, including an air inlet and exhaust channel container and a unit container, the air inlet and exhaust channel container is detachably arranged on the unit container; the air inlet and exhaust channel container is divided into an air inlet chamber, a muffler chamber and an exhaust chamber, the air inlet chamber is provided with a first air inlet array and a second air inlet array, the air path directions of the first air inlet array and the second air inlet array are staggered, the muffler chamber is provided with a muffler, and the exhaust chamber is provided with a first exhaust array; the unit container is divided into a unit air inlet chamber, a unit chamber and a unit exhaust chamber in sequence along the forward direction of the air path; an oil The box chamber, the unit air inlet chamber is connected with the air inlet chamber of the air inlet and exhaust channel container to form an air inlet channel, and a third air inlet array is arranged in the unit air inlet chamber; an oil tank is arranged in the oil tank chamber, and a diesel generator set is arranged in the unit chamber, and the diesel generator set is connected with the oil tank and the muffler in the air inlet and exhaust channel container; a second exhaust array is arranged in the unit exhaust chamber, and is connected with the exhaust chamber of the air inlet and exhaust channel container to form an exhaust channel; the end face and side face of the air inlet chamber of the air inlet and exhaust channel container are provided with first air inlet louvers, the side face of the exhaust chamber is provided with exhaust louvers, and the end face of the unit air inlet chamber of the unit container is provided with second air inlet louvers.

[0005] Furthermore, the first air inlet array, the second air inlet array, the third air inlet array and the first air exhaust array each include at least two sound absorbing sheets arranged in a uniform array; the arrangement directions of the sound absorbing sheets in the first air inlet array and the second air inlet array are staggered with each other; the second air exhaust array includes an oblique sound absorbing sheet and at least two longitudinal sound absorbing sheets arranged in a uniform array, the lengths of the longitudinal sound absorbing sheets are not exactly the same, and the longitudinal sound absorbing sheets of different lengths are staggered to form staggered exhaust channels, and the oblique sound absorbing sheets are arranged at different heights in the exhaust chamber of the unit.

[0006] Furthermore, the sound absorbing sheet, the longitudinal sound absorbing sheet and the oblique sound absorbing sheet have the same structure, and all include two layers of perforated plates, and an asphalt layer and a sound absorbing layer arranged between the two layers of perforated plates.

[0007] The beneficial effects of the utility model are:

[0008] (1) The utility model adopts a double-layer stacked container design, integrating the noise reduction array and the muffler in another container, which is separated from the unit container. On the one hand, the diesel generator set can be kept away from the air inlet and outlet to avoid noise leakage. On the other hand, the number of components in the unit container is reduced, and the length of the unit container does not need to be increased. The air inlet and outlet duct containers and the unit container can be designed according to standard sizes and can be transported separately using standard transportation methods, thereby overcoming the problem of non-standard transportation of container-type high-power low-noise units;

[0009] (2) The utility model connects the air inlet and exhaust duct container and the air inlet end and the air exhaust end of the unit container respectively to form an air inlet duct and an air exhaust duct, and designs a variety of air inlet arrays and air exhaust arrays. The arrangement methods of the sound absorbing sheets in the air inlet arrays and the air exhaust arrays are different, making the air path structure of the air inlet duct and the air exhaust duct more complex, which is conducive to the sound absorbing sheets to fully absorb and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0012] Figure 2 Schematic diagram of the structure of an embodiment of the utility model; wherein (a) is a front view of the embodiment of the utility model, (b) is a rear view of the embodiment of the utility model, (c) is a left view of the embodiment of the utility model, and (d) is a right view of the embodiment of the utility model;

[0013] Figure 3 It is a top view cross-sectional view of the air inlet and outlet channel container in the embodiment of the utility model;

[0014] Figure 4 It is a schematic diagram of the structure of the sound absorbing sheet, the longitudinal sound absorbing sheet and the oblique sound absorbing sheet in the embodiment of the utility model.

[0015] Explanation of the accompanying drawings: 1-muffler, 2-inlet and exhaust channel container, 3-unit container, 4-diesel generator set, 5-fuel tank, 6-sound-absorbing sheet, 201-first air inlet louver, 202-muffler chamber vent, 203-exhaust louver, 204-first air inlet array, 205-second air inlet array, 206-first exhaust array, 301-second exhaust array, 302-third air inlet array, 303-second air inlet louver, 304-maintenance door, 601-perforated plate, 602-asphalt layer, 603-sound-absorbing layer. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and therefore, the utility model is not limited to the limitations of the specific embodiments disclosed below.

[0017] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field described in this application. The words "first", "second" and similar terms used in this patent application specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0018] like Figure 1~Figure 4 As shown, a composite air duct low-noise diesel generator set 4 includes an air inlet and exhaust channel container 2 and a unit container 3, wherein the air inlet and exhaust channel container 2 is detachably arranged on the unit container 3. The air inlet and exhaust channel container 2 is divided into an air inlet chamber, a muffler chamber and an exhaust chamber, wherein a first air inlet array 204 and a second air inlet array 205 are arranged in the air inlet chamber, and the air path directions of the first air inlet array 204 and the second air inlet array 205 are staggered with each other, so that the air path structure in the air inlet chamber is more complex, which is conducive to the full sound absorption and noise reduction of the air inlet array. A muffler 1 is arranged in the muffler chamber, and the muffler 1 is used to muffle the exhaust of the diesel generator set 4. A first exhaust array 206 is arranged in the exhaust chamber, and the exhaust array is also used for sound absorption and noise reduction.

[0019] The unit container 3 is divided into a unit air inlet chamber, a unit chamber and a unit exhaust chamber in sequence along the forward direction of the wind path. A fuel tank chamber is arranged below the unit air inlet chamber, and the unit air inlet chamber is connected with the air inlet chamber of the air inlet and exhaust channel container 2 to form an air inlet channel. A third air inlet array 302 is arranged in the unit air inlet chamber, and the third air inlet array 302 cooperates with the first air inlet array 204 and the second air inlet array 205 to jointly absorb and reduce noise in the air inlet channel. A fuel tank 5 is arranged in the fuel tank chamber, and a diesel generator set 4 is arranged in the unit chamber. The diesel generator set 4 is connected to the fuel tank 5 and the muffler 1 in the air inlet and exhaust channel container 2. The fuel tank 5 is used to provide fuel for the diesel generator set 4, and the gas discharged by the diesel generator set 4 is discharged after being silenced by the muffler 1. The second exhaust array 301 is arranged in the exhaust chamber of the unit, and is connected with the exhaust chamber of the air inlet and exhaust channel container 2 to form an exhaust channel. The second exhaust array 301 cooperates with the first exhaust array 206 to jointly absorb and reduce noise in the exhaust channel. The end face and side face of the air inlet chamber of the air inlet and exhaust channel container 2 are provided with first air inlet louvers 201, the side face of the exhaust chamber is provided with exhaust louvers 203, and the end face of the air inlet chamber of the unit container 3 is provided with second air inlet louvers 303. Preferably, the first air inlet louvers 201, the second air inlet louvers 303 and the exhaust louvers 203 are all electric louvers.

[0020] In the embodiment of the utility model, the first air inlet array 204, the second air inlet array 205, the third air inlet array 302 and the first air exhaust array 206 all include at least two sound absorbing sheets 6 arranged in a uniform array. The number of sound absorbing sheets 6 is set according to actual needs. Under the condition of ensuring the minimum spacing distance between two adjacent sound absorbing sheets 6, the more sound absorbing sheets 6 there are, the better the sound absorption and noise reduction effect. The arrangement directions of the sound absorbing sheets 6 in the first air inlet array 204 and the second air inlet array 205 are staggered, making the air path structure of the air inlet channel more complex, so that the sound absorbing sheets 6 can fully absorb sound and reduce noise. In the embodiment of the utility model, the sound absorbing sheets 6 of the first air inlet array 204 and the third air inlet are arranged in a horizontal manner, while the sound absorbing sheets 6 of the second air inlet array 205 and the first air exhaust array 206 are arranged in a vertical manner. The second exhaust array 301 includes an oblique sound absorbing sheet and at least two longitudinal sound absorbing sheets arranged in a uniform array. The lengths of the longitudinal sound absorbing sheets are not exactly the same. The longitudinal sound absorbing sheets of different lengths are arranged in a staggered manner to form staggered exhaust passages, which can also complicate the wind path structure of the exhaust passage in a limited space and promote the sound absorption and noise reduction of the sound absorbing sheets. The oblique sound absorbing sheets are arranged at different heights in the exhaust chamber of the unit. While absorbing sound, the oblique sound absorbing sheets can also play a role in guiding the wind path.

[0021] The working principle of the embodiment of the utility model is as follows:

[0022] The air inlet and exhaust channel container 2 and the unit container 3 are designed according to standard dimensions. When the unit capacity is 2000kW, the unit design length is within 14 meters. During transportation, the air inlet and exhaust channel container 2 and the unit container 3 are disassembled, and the two containers are transported by 17.5-meter standard flatbed trucks, which effectively overcomes the problem of non-standard transportation of container-type high-power and low-noise units. After arriving at the place of use, the air inlet and exhaust channel container 2 is installed above the unit container 3, and the exhaust port of the diesel generator set 4 is connected to the muffler 1. At this time, the air inlet and exhaust port of the entire device is at a certain distance from the diesel generator set 4, and is not close to the diesel generator set 4, which can effectively reduce noise leakage. The muffler chamber vent 202 is arranged on the side wall of the muffler chamber of the air inlet and exhaust channel container 2, and the two sides and two end faces of the unit container 3 are provided with maintenance doors 304 corresponding to the positions of the unit air inlet chamber, fuel tank chamber, unit chamber and unit exhaust chamber, which are convenient for maintenance personnel to perform maintenance.

[0023] The wind enters the air inlet chamber of the air inlet and exhaust channel container 2 and the unit air inlet chamber of the unit container 3 from the first air inlet louver 201 and the second air inlet louver 303 respectively, and enters the unit room after sound absorption and noise reduction through the first air inlet array 204, the second air inlet array 205 and the third air inlet array 302. A part of the wind enters the diesel generator set 4 and passes through the exhaust port of the diesel generator set 4, and is discharged after being silenced by the muffler 1. The other part of the wind passes through the unit room and enters the unit exhaust chamber, and enters the exhaust chamber of the air inlet and exhaust channel container 2 after being guided by the second exhaust array 301. During the guidance process, the wind is subjected to sound absorption and noise reduction once through the second exhaust array 301, and then is discharged from the exhaust louver 203 after a second sound absorption and noise reduction through the first exhaust array 206 in the exhaust chamber of the air inlet and exhaust channel container 2. The structures of the sound absorbing sheet 6, the longitudinal sound absorbing sheet and the oblique sound absorbing sheet in the embodiment of the utility model are the same, and all include two layers of perforated plates 601, and an asphalt layer 602 and a sound absorbing layer 603 arranged between the two layers of perforated plates 601. The holes on the perforated plates 601 can increase the contact area between the wind and the sound absorbing layer 603, and improve the sound absorption effect. The sound absorbing layer 603 is made of sound absorbing materials, such as rock wool. For a 2000kW unit, the embodiment of the utility model can achieve no-load noise of less than 80 decibels per meter.

[0024] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A composite air duct low-noise diesel generator set, characterized in that: The invention comprises an air inlet and exhaust channel container and a unit container, wherein the air inlet and exhaust channel container is detachably arranged on the unit container; the air inlet and exhaust channel container is divided into an air inlet chamber, a muffler chamber and an exhaust chamber, the air inlet chamber is provided with a first air inlet array and a second air inlet array, the wind paths of the first air inlet array and the second air inlet array are staggered with each other, the muffler chamber is provided with a muffler, and the exhaust chamber is provided with a first exhaust array; the unit container is divided into a unit air inlet chamber, a unit chamber and a unit exhaust chamber in sequence along the forward direction of the wind path; an oil tank chamber is provided below the unit air inlet chamber, and the unit air inlet chamber and the air inlet and exhaust channel container are connected. The air inlet chambers of the boxes are connected to form an air inlet channel, and a third air inlet array is arranged in the air inlet chamber of the unit; an oil tank is arranged in the oil tank chamber, and a diesel generator set is arranged in the unit chamber, and the diesel generator set is connected to the oil tank and the muffler in the air inlet and exhaust channel container; a second exhaust array is arranged in the exhaust chamber of the unit, and is connected to the exhaust chamber of the air inlet and exhaust channel container to form an exhaust channel; the end face and side face of the air inlet chamber of the air inlet and exhaust channel container are provided with first air inlet louvers, the side face of the exhaust chamber is provided with exhaust louvers, and the end face of the air inlet chamber of the unit container is provided with second air inlet louvers.

2. A composite air duct low-noise diesel generator set according to claim 1, characterized in that: The first air inlet array, the second air inlet array, the third air inlet array and the first air exhaust array all include at least two sound absorbing sheets arranged in a uniform array; the arrangement directions of the sound absorbing sheets in the first air inlet array and the second air inlet array are staggered with each other; the second air exhaust array includes an oblique sound absorbing sheet and at least two longitudinal sound absorbing sheets arranged in a uniform array, the lengths of the longitudinal sound absorbing sheets are not exactly the same, and the longitudinal sound absorbing sheets of different lengths are staggered to form staggered exhaust channels, and the oblique sound absorbing sheets are arranged at different heights in the exhaust chamber of the unit.

3. A composite air duct low-noise diesel generator set according to claim 2, characterized in that: The sound absorbing sheet, the longitudinal sound absorbing sheet and the oblique sound absorbing sheet have the same structure, and all include two layers of perforated plates, and an asphalt layer and a sound absorbing layer arranged between the two layers of perforated plates.

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