Noise reduction device of energy-saving generator set

Abstract

The utility model discloses a noise reduction device of an energy-saving generator set, which comprises a generator set shell, an air outlet pipe is arranged in the generator set shell, one end of the air outlet pipe is communicated with an air outlet position of the generator set, the other end of the air outlet pipe is communicated with the outside, the air outlet pipe comprises a storage shell and a side plate, and the side plate is arranged in the storage shell. The sound-absorbing cotton frames provided with the sound-absorbing cotton are placed between the upper storage groove and the lower storage groove, the fixing rods penetrate through the positioning holes and the penetrating holes, the fixing rods are fixed to the storage shell, the multiple sound-absorbing cotton frames can be conveniently installed, and when the generator set generates noise, the sound-absorbing cotton frames can be fixed to the storage shell through the fixing rods. The sound-absorbing cotton absorbs a part of noise, meanwhile, a certain amount of low-frequency noise impacts the sound-absorbing cotton frame and drives the sound-absorbing cotton frame to move, the moving amplitude of the sound-absorbing cotton frame is reduced under the action of the buffer springs on the two sides of the fixing plate, a part of noise can be absorbed, and meanwhile the vibration noise of the sound-absorbing cotton frame is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving generator sets, in particular to a noise reduction device for energy-saving generator sets. Background Art

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. The generator set consists of a power system, a control system, a silencer system, a shock absorption system, and an exhaust system. The principle is that the diesel engine generator set shrinks in size and the temperature rises rapidly, reaching the ignition point of the diesel. The diesel is ignited, the mixed gas burns violently, and the volume expands rapidly, pushing the piston downward, which is called "work". Each cylinder works in a certain order, and the thrust acting on the piston is converted into a force that drives the crankshaft to rotate through the connecting rod, thereby driving the crankshaft to rotate. Using the principle of "electromagnetic induction", the generator will output an induced electromotive force, which generates current through a closed load circuit.

[0003] Since the generator set will generate noise during use, it is necessary to install a noise reduction device on the generator set. Some existing generator sets will install sound-absorbing cotton at the air outlet to absorb noise. This method is to fix the sound-absorbing cotton in the frame and then fix it inside the air outlet duct with bolts. For production, this installation method with bolts is more cumbersome. At the same time, due to the noise, a certain low-frequency impact will be generated, but the sound-absorbing cotton frame is basically fixed inside the air outlet duct, which will cause the sound-absorbing cotton frame to vibrate. Utility Model Content

[0004] The purpose of the utility model is to provide a noise reduction device for an energy-saving generator set to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a noise reduction device for an energy-saving generator set, comprising a generator set shell, an air outlet pipe is installed inside the generator set shell, one end of the air outlet pipe is connected to the air outlet position of the generator set, and the other end of the air outlet pipe is connected to the outside world. The air outlet pipe comprises a storage shell and a side panel, the side panel is slidably installed on one side of the storage shell, the inner wall of the storage shell is equidistantly provided with storage grooves, a sound-absorbing cotton frame is slidably installed between the upper and lower storage grooves, sound-absorbing cotton is placed inside the sound-absorbing cotton frame, the width of the storage groove is greater than the width of the sound-absorbing cotton frame, buffer grooves are equidistantly opened on the inner wall of the storage shell, the buffer grooves and the storage grooves are integrally arranged, fixed plates are symmetrically fixedly installed at both ends of the sound-absorbing cotton frame, the fixed plates are installed inside the buffer grooves, buffer springs are equidistantly fixedly installed on both sides of the fixed plate, and the end of the buffer spring away from the fixed plate is fitted with the surface of the buffer groove.

[0006] As a further preferred embodiment of the present technical solution, the top and bottom of the storage shell are equidistantly provided with through holes, the fixing plate is provided with positioning holes corresponding to the positions of the buffer springs, and fixing rods are slidably installed inside the positioning holes and the through holes, and the fixing rods are installed on the storage shell by fastening bolts.

[0007] As a further preferred embodiment of the present technical solution, a groove is symmetrically provided on one side of the storage shell, a protrusion is fixedly installed on the inner side of the side plate at a position corresponding to the groove, and the protrusion is slidably connected to the groove.

[0008] As a further preferred embodiment of the present technical solution, one end of the protrusion away from the side plate is chamfered.

[0009] As a further preferred embodiment of the present technical solution, a mounting rod is fixedly installed on the top of the side panel, a first inclined surface is provided at one end of the mounting rod away from the side panel, a limiting hole is provided at a position of the mounting rod close to the first inclined surface, a fixing frame is fixedly installed on the top of the storage shell, a limiting rod is slidably installed on the top of the fixing frame, a second inclined surface is provided at the bottom end of the limiting rod, the limiting rod is slidably connected to the limiting hole, a return spring is sleeved on the outer side of the top of the limit rod, the top end of the return spring is fixedly connected to the top of the limit rod, and the other end of the return spring is fixedly connected to the fixing frame.

[0010] As a further preferred embodiment of the present technical solution, an inclination angle is provided at the position where the mounting rod contacts the limiting hole.

[0011] The utility model provides a noise reduction device for an energy-saving generator set, which has the following beneficial effects:

[0012] (1) The utility model places a sound-absorbing cotton frame installed with sound-absorbing cotton between the upper and lower storage grooves, passes a fixing rod through the positioning hole and the through hole, and fixes the fixing rod on the storage shell, so as to facilitate the installation of multiple sound-absorbing cotton frames. When the generator set generates noise, the sound-absorbing cotton will absorb part of the noise. At the same time, a certain amount of low-frequency noise will impact the sound-absorbing cotton frame, which will drive the sound-absorbing cotton frame to move. Under the action of the buffer springs on both sides of the fixing plate, the movement amplitude of the sound-absorbing cotton frame will be slowed down, so as to absorb part of the noise and reduce the vibration noise of the sound-absorbing cotton frame.

[0013] (2) The utility model preliminarily positions the side panel by inserting the protrusion into the groove. The first inclined surface of the rear installation rod squeezes the bottom end of the limit rod to raise the limit rod. When the side panel moves to the final position, the limit rod is pulled by the reset spring to drive the limit rod to be inserted into the limit hole for installation of the storage shell and the side panel. When the storage shell and the side panel are disassembled and repaired, the limit rod is pulled out of the limit hole and the side panel is slid away from the storage shell, thereby facilitating the inspection and disassembly of the air outlet duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Figure 3 This is one of the schematic diagrams of the partial explosion structure of the utility model;

[0017] Figure 4 The second schematic diagram of the partial explosion structure of the utility model

[0018] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0019] In the figure: 1. Generator housing; 2. Air outlet duct; 3. Storage shell; 4. Side panel; 5. Storage slot; 6. Sound-absorbing cotton frame; 7. Buffer slot; 8. Fixing plate; 9. Buffer spring; 10. Perforation; 11. Positioning hole; 12. Fixing rod; 13. Groove; 14. Bump; 15. Mounting rod; 16. First inclined plane; 17. Limiting hole; 18. Fixing frame; 19. Limiting rod; 20. Second inclined plane; 21. Inclination angle; 22. Reset spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figures 1 to 5 As shown, in the present embodiment, a noise reduction device for an energy-saving generator set comprises a generator set shell 1, an air outlet pipe 2 is installed inside the generator set shell 1, one end of the air outlet pipe 2 is connected to the air outlet position of the generator set, and the other end of the air outlet pipe 2 is connected to the outside, the air outlet pipe 2 comprises a storage shell 3 and a side plate 4, the side plate 4 is slidably installed on one side of the storage shell 3, the inner wall of the storage shell 3 is equidistantly provided with storage grooves 5, a sound-absorbing cotton frame 6 is slidably installed between the upper and lower storage grooves 5, sound-absorbing cotton is placed inside the sound-absorbing cotton frame 6, the width of the storage groove 5 is greater than the width of the sound-absorbing cotton frame 6, buffer grooves 7 are equidistantly opened on the inner wall of the storage shell 3, the buffer grooves 7 are integrally arranged with the storage grooves 5, fixed plates 8 are symmetrically fixedly installed at both ends of the sound-absorbing cotton frame 6, the fixed plates 8 are installed inside the buffer grooves 7, buffer springs 9 are equidistantly fixedly installed on both sides of the fixed plate 8, and the end of the buffer spring 9 away from the fixed plate 8 is fitted with the surface of the buffer groove 7.

[0022] like Figures 1 to 5As shown, the top and bottom of the storage shell 3 are equidistantly provided with through holes 10, the fixing plate 8 is provided with a positioning hole 11 corresponding to the position of the buffer spring 9, and a fixing rod 12 is slidably installed inside the positioning hole 11 and the through hole 10, and the fixing rod 12 is installed on the storage shell 3 by fastening bolts.

[0023] The sound-absorbing cotton frame 6 installed with the sound-absorbing cotton is placed between the upper and lower storage grooves 5, and the fixing rod 12 is passed through the positioning hole 11 and the through hole 10, and the fixing rod 12 is fixed on the storage shell 3, so as to facilitate the installation of multiple sound-absorbing cotton frames 6.

[0024] like Figures 1 to 5 As shown, a groove 13 is symmetrically provided on one side of the storage shell 3 , and a protrusion 14 is fixedly installed on the inner side of the side plate 4 at a position corresponding to the groove 13 , and the protrusion 14 is slidably connected to the groove 13 .

[0025] Inserting the protrusion 14 into the groove 13 facilitates preliminary positioning of the side panel 4 .

[0026] like Figures 1 to 5 As shown, one end of the protrusion 14 away from the side plate 4 is chamfered.

[0027] The convenient protrusion 14 is inserted into the groove 13 .

[0028] like Figures 1 to 5 As shown, a mounting rod 15 is fixedly installed on the top of the side panel 4, and a first inclined surface 16 is provided at one end of the mounting rod 15 away from the side panel 4, and a limiting hole 17 is provided at a position of the mounting rod 15 close to the first inclined surface 16, and a fixing frame 18 is fixedly installed on the top of the storage shell 3, and a limiting rod 19 is slidably installed on the top of the fixing frame 18, and a second inclined surface 20 is provided at the bottom end of the limiting rod 19, and the limiting rod 19 is slidably connected to the limiting hole 17, and a reset spring 22 is sleeved on the outer side of the top of the limiting rod 19, and the top end of the reset spring 22 is fixedly connected to the top of the limiting rod 19, and the other end of the reset spring 22 is fixedly connected to the fixing frame 18.

[0029] When installing the storage shell 3 and the side panel 4, the protrusion 14 is inserted into the groove 13 to preliminarily position the position of the side panel 4, and the first inclined surface 16 of the rear installation rod 15 will squeeze the bottom end of the limiting rod 19 to be used for the limiting rod 19 to rise. When the side panel 4 moves to the final position, the limiting rod 19 is pulled by the return spring 22 to drive the limiting rod 19 to be inserted into the limiting hole 17 for the installation of the storage shell 3 and the side panel 4.

[0030] like Figures 1 to 5 As shown, the position where the mounting rod 15 contacts the limiting hole 17 is provided with an inclination angle 21 .

[0031] When disassembling and repairing the storage shell 3 and the side panel 4, slightly pull the limit rod 19 and slide the side panel 4. The limit rod 19 will squeeze the inclination angle 21, which can drive the limit rod 19 to slide out of the limit hole 17, and then slide the side panel 4 away from the storage shell 3, so as to facilitate the inspection and disassembly of the air outlet duct 2.

[0032] The utility model provides a noise reduction device for an energy-saving generator set, and the specific working principle is as follows:

[0033] When the device is in use, the sound-absorbing cotton frame 6 installed with the sound-absorbing cotton is placed between the upper and lower storage grooves 5, and the fixing rod 12 is passed through the positioning hole 11 and the through hole 10, and the fixing rod 12 is fixed on the storage shell 3, so as to facilitate the installation of multiple sound-absorbing cotton frames 6. When the generator set generates noise, the sound-absorbing cotton will absorb part of the noise. At the same time, a certain amount of low-frequency noise will impact the sound-absorbing cotton frame 6, which will drive the sound-absorbing cotton frame 6 to move. Under the action of the buffer springs 9 on both sides of the fixing plate 8, the movement amplitude of the sound-absorbing cotton frame 6 will be slowed down, so as to absorb part of the noise and reduce the vibration noise of the sound-absorbing cotton frame 6. When installing the storage shell 3 and the side panel 4, the protrusion 14 is inserted into the groove 13 to preliminarily locate the position of the side panel 4, and the first inclined surface 16 of the rear installation rod 15 will squeeze the bottom end of the limit rod 19 to be used for the limit rod 19 to rise. When the side panel 4 moves to the final position, the limit rod 19 is pulled by the return spring 22 to drive the limit rod 19 to be inserted into the limit hole 17 for the installation of the storage shell 3 and the side panel 4. When disassembling and repairing the storage shell 3 and the side panel 4, pull the limit rod 19 and pull the limit rod 19 out of the limit hole 17, and slide the side panel 4 away from the storage shell 3, so as to facilitate the inspection and disassembly of the air outlet duct 2.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for an energy-saving generator set, comprising a generator set housing (1), characterized in that: An air outlet pipe (2) is installed inside the generator housing (1), one end of the air outlet pipe (2) is connected to the air outlet position of the generator, and the other end of the air outlet pipe (2) is connected to the outside, the air outlet pipe (2) comprises a storage shell (3) and a side plate (4), the side plate (4) is slidably installed on one side of the storage shell (3), the inner wall of the storage shell (3) is provided with storage grooves (5) at equal intervals, a sound-absorbing cotton frame (6) is slidably installed between the upper and lower storage grooves (5), and sound-absorbing cotton is placed inside the sound-absorbing cotton frame (6). The width of the storage groove (5) is greater than the width of the sound-absorbing cotton frame (6); the inner wall of the storage shell (3) is provided with buffer grooves (7) at equal intervals; the buffer grooves (7) and the storage grooves (5) are integrally arranged; fixing plates (8) are symmetrically fixedly installed at both ends of the sound-absorbing cotton frame (6); the fixing plates (8) are installed inside the buffer grooves (7); buffer springs (9) are fixedly installed at equal intervals on both sides of the fixing plates (8); one end of the buffer spring (9) away from the fixing plates (8) is arranged to fit the surface of the buffer groove (7).

2. The noise reduction device for an energy-saving generator set according to claim 1, characterized in that: The top and bottom of the storage shell (3) are equidistantly provided with through holes (10); the fixing plate (8) is provided with a positioning hole (11) at a position corresponding to the buffer spring (9); a fixing rod (12) is slidably installed inside the positioning hole (11) and the through hole (10); and the fixing rod (12) is installed on the storage shell (3) by means of a fastening bolt.

3. The noise reduction device for an energy-saving generator set according to claim 2, characterized in that: A groove (13) is symmetrically provided on one side of the storage shell (3), and a protrusion (14) is fixedly installed on the inner side of the side plate (4) at a position corresponding to the groove (13), and the protrusion (14) is slidably connected to the groove (13).

4. The noise reduction device for an energy-saving generator set according to claim 3 is characterized in that: One end of the protrusion (14) away from the side plate (4) is provided with a chamfer.

5. The noise reduction device for an energy-saving generator set according to claim 4, characterized in that: A mounting rod (15) is fixedly mounted on the top of the side plate (4), a first inclined surface (16) is provided at one end of the mounting rod (15) away from the side plate (4), a limiting hole (17) is provided at a position of the mounting rod (15) close to the first inclined surface (16), a fixing frame (18) is fixedly mounted on the top of the storage shell (3), a limiting rod (19) is slidably mounted on the top of the fixing frame (18), a second inclined surface (20) is provided at the bottom end of the limiting rod (19), the limiting rod (19) is slidably connected to the limiting hole (17), a reset spring (22) is sleeved on the outer side of the top of the limiting rod (19), the top end of the reset spring (22) is fixedly connected to the top of the limiting rod (19), and the other end of the reset spring (22) is fixedly connected to the fixing frame (18).

6. The noise reduction device for an energy-saving generator set according to claim 5, characterized in that: The position where the mounting rod (15) contacts the limiting hole (17) is provided with an inclination angle (21).

Images