CN211474258U

CN211474258U - Low-noise generator set

Info

Publication number: CN211474258U
Application number: CN202020118084.XU
Authority: CN
Inventors: 李建宏; 李铭
Original assignee: Quanzhou Hongsheng Electromechanical Co ltd
Current assignee: Quanzhou Hongsheng Electromechanical Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-11
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a low-noise generator set, which comprises a box body and a generating system arranged in the box body, wherein a shell which protrudes out of the side wall of the box body and covers part of the side wall is fixed on the side wall of one side of the box body, a ventilation groove is arranged on the side wall of the shell, and a base is fixed at the bottom of the box body; the middle part of the box body is embedded with sound-absorbing cotton, and a sound-deadening through groove is formed in the side wall of the box body corresponding to the shell; the length that the groove was led to in the amortization is reduced gradually by the inside outside to of box, and just the amortization leads to the inner wall protrusion that the groove is the slope and is provided with the dogtooth. Through the box clamp be equipped with inhale the sound cotton and open in the amortization of box leads to the groove, when not influencing ventilation groove and radiator fan heat dissipation, make partly noise by inhale the sound cotton and absorb, partly leads to the groove consumption through the amortization, finally reaches the efficiency of making an uproar.

Description

Low-noise generator set

Technical Field

The utility model belongs to the technical field of generating set technique and specifically relates to a low noise generating set is related to.

Background

The diesel generator set is a mechanical equipment which mainly uses diesel as main fuel, generally consists of diesel engine, generator, starting or controlling storage battery and water tank, etc. it uses diesel generator as prime power to drive generator to generate electricity, and converts kinetic energy into electric energy and heat energy. The diesel generator set is a small and medium-sized power generation device, has the advantages of flexibility, low investment, convenient starting and the like, and is widely applied to communication, mining, road building, forest gardens, farmland irrigation, field construction and the like.

Chinese patent No. CN208803902U discloses a split type fuel generator set, which comprises a bottom frame, a heat dissipation chamber, an equipment chamber, and a control chamber, wherein the heat dissipation chamber, the equipment chamber, and the control chamber are all mounted on the bottom frame and detachably connected to the bottom frame. A radiator is installed in the radiating cabin, a fuel engine and a generator connected with the fuel engine are installed in the equipment cabin, and a control system is installed in the control cabin and is respectively connected with the fuel engine and the generator.

The above prior art solutions have the following drawbacks: the three cabin bodies of the utility model all have similar structures, and the top covers can be detached, so as to carry out some simple maintenance or to see the conditions in the cabin bodies; an air inlet is formed in the bottom frame, and a plurality of air vents are formed in the surface of the heat dissipation cabin and are used as air outlets, so that an air flow channel is formed in the heat dissipation cabin body, hot air can be conveniently exhausted from the cabin body as soon as possible, and the temperature of the split fuel generator set is reduced; however, the power of the generator set has large exhaust noise and exhaust noise, the noise is diffused out of the cabin body through the ventilation holes, the excessive noise can hurt the hearing of people, and meanwhile, the noise pollution is caused to the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a generating set with noise reduction function to the not enough of prior art existence.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a low-noise generator set comprises a box body and a power generation system arranged in the box body, wherein a shell which protrudes out of the side wall of the box body and covers part of the side wall is fixed on the side wall of one side of the box body, a ventilation groove is formed in the side wall of the shell, and a base is fixed at the bottom of the box body; the box body is of a double-layer structure with sound-absorbing cotton embedded in the middle, and a silencing through groove is formed in the side wall of the box body corresponding to the position covered by the shell; the length that the groove was led to in the amortization is reduced gradually by the inside outside to of box, and just the amortization leads to the inner wall protrusion that the groove is the slope and is provided with the dogtooth.

By adopting the technical scheme, when the power generation system is used, the power generation system is operated, and hot air in the box body is discharged out of the box body through the silencing through groove and the ventilating groove while the power generation system is operated, so that the aim of heat dissipation is fulfilled; meanwhile, the sound-absorbing cotton absorbs the exhaust noise or the noise generated by other reasons, and the noise which is not absorbed by the sound-absorbing cotton passes through the silencing through groove. The essence of sound is a vibration wave, which is conducted through a medium to reach the ears of humans and animals and produce vibrations through the tympanic membrane to hear the sound; when noise is transmitted to the silencing through groove, the width of the silencing through groove is gradually reduced, and the resistance of passing the noise is increased, so that part of the energy of the noise is consumed. Then, the inner wall of the silencing through groove forms an uneven surface through the convex teeth, and sound can be scattered in all directions in the vibration transmission process, so that the vibration quantity directly reaching ears of a person is reduced, and the silencing effect is achieved; and the sound wave can be absorbed by the sound-absorbing cotton in the middle of the box body in the collision process with the inner wall of the silencing through groove, so that the aim of silencing is fulfilled. Therefore, the intensity of the noise finally emitted through the ventilation slots is lower, and the effect of reducing the noise is achieved. Through inhaling the cotton and leading to the groove with the amortization promptly, when not influencing the heat dissipation of ventilation groove, make partly noise by inhaling the cotton absorption of sound, partly leads to the groove consumption through the amortization, finally reaches the efficiency of making an uproar.

The present invention may be further configured in a preferred embodiment as: the shell is provided with a plurality of groups of ventilation grooves which are arranged at intervals along the width direction of the shell, and each group of ventilation grooves comprises a plurality of ventilation grooves which are arranged at intervals along the height direction of the shell; and the part of the inner wall of the shell, which is not provided with the ventilation groove, is coated with sound-absorbing cotton.

By adopting the technical scheme, a plurality of groups of ventilation grooves are formed to ensure that the air exhaust area is 1.5 times of that of the power generation system, so that the heat dissipation effect is achieved; because the ventilation opening is favorable for the transmission of noise, the ventilation grooves which are arranged at intervals replace the whole ventilation opening, and therefore part of noise which is not absorbed and consumed can be absorbed by the sound-absorbing cotton on the inner wall of the shell when being transmitted to the shell finally, or the noise is absorbed by the sound-absorbing cotton when passing through the ventilation grooves and collides with the inner wall of the ventilation grooves to achieve the effect of noise reduction.

The present invention may be further configured in a preferred embodiment as: the ventilation groove extends along the width direction of the shell, and the silencing through groove extends along the height direction of the box body.

Through adopting above-mentioned technical scheme, adopt length direction mutually perpendicular's ventilation groove and amortization to lead to the groove in order to improve the noise and convey the tortuosity of the outside route of casing from the box, the unable direct conveying department casing of noise promptly, through the collision consumption and the absorption at the amortization leads to the groove, the collision absorption of shells inner wall and the collision consumption in ventilation groove finally reach the purpose of noise reduction.

The present invention may be further configured in a preferred embodiment as: the power generation system comprises an oil tank fixed in the base, and a cooling fan, an engine, a generator and a controller which are sequentially fixed on the base from one side of the box body, which is provided with the shell, to the side far away from the shell.

Through adopting above-mentioned technical scheme, during the use, open engine and generator moving through the controller and open radiator fan and discharge to the inside hot-air of box simultaneously, when radiator fan discharges hot-air from the amortization logical groove and ventilation groove, the noise absorption will air exhaust through the sound cotton of inhaling of sound cotton, amortization logical groove and casing of box, does not influence the radiating effect that has the noise reduction when airing exhaust.

The present invention may be further configured in a preferred embodiment as: the exhaust purifier is fixed on the box body, one end of the exhaust purifier is communicated with an air duct communicated with the engine, and the other end of the exhaust purifier is communicated with an exhaust tail pipe; the upper end face of the box body is provided with a through hole for the air guide pipe to pass through, and the part of the air guide pipe in the box body is sleeved with a first silencer.

By adopting the technical scheme, the flue gas generated in the running process of the engine is conveyed to the tail gas purifier through the tail gas exhaust pipe to be filtered, so that the discharged gas meets the emission requirement, the environment is prevented from being polluted, and the environment-friendly effect is achieved. And the exhaust noise of the engine is reduced under the action of the first silencer on the air duct; after the flue gas is treated by the tail gas purifier, the gas is discharged through the tail pipe, and the noise generated by leading the gas out is reduced under the action of the first silencer of the tail pipe.

The present invention may be further configured in a preferred embodiment as: and a second silencer, a DOC oxidizer and a DPF filter element are sequentially communicated from one side of the air duct to one side of the tail pipe in the tail gas purifier.

Through adopting above-mentioned technical scheme, for the carrier that has scribbled the catalyst in the DOC oxidizer, with the reducing gas oxidation in the tail gas, and then can reach the effect of eliminating toxic gas. The DPF filter element body is internally provided with a plurality of fine parallel pore channels, the parallel pore channels are separated by a ventilating pore wall, one end of each pore channel is open, and the other end of each pore channel is closed; tail gas enters the pore channel, and particles in the tail gas have larger particle size and cannot pass through the micropores, so that the tail gas is filtered on the pore wall to achieve the effect of eliminating black smoke; and produce heat and heat DPF filter core heating when DOC oxidizer oxidizing gas, required temperature when can providing DPF filter core regeneration to prolong tail gas purifier's live time.

The present invention may be further configured in a preferred embodiment as: an access door is hinged to the side wall of the box body corresponding to the connection part of the generator and the engine; the side wall of the oil tank is communicated with an oil conveying short pipe, and the part of the base corresponding to the oil conveying short pipe is hinged with a movable door.

By adopting the technical scheme, the connection between the engine and the generator needs to be periodically overhauled, so that the inspection of the engine unit is facilitated by opening the access door; and when diesel oil needs to be input into the oil tank, the movable door is opened and is communicated with the oil delivery short pipe through the oil pipe.

The present invention may be further configured in a preferred embodiment as: the lateral wall of base is seted up and is supplied fork truck male slot.

Through adopting above-mentioned technical scheme, use fork truck to remove engine unit, insert the slot with fork truck's fork in, can realize engine unit's removal to through the grafting of slot and fork, avoid causing the damage to the oil tank at engine unit removal in-process.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the box body is clamped with the sound absorption cotton and the silencing through groove arranged on the box body, so that part of noise is absorbed by the sound absorption cotton while the ventilation groove and the heat dissipation fan are not influenced in heat dissipation, and part of noise is consumed by the silencing through groove, and finally the effect of noise reduction is achieved;

2. the width of the silencing through groove is gradually reduced, so that the passing resistance of noise is increased, then the inner wall of the silencing through groove forms an uneven surface through the convex teeth, and sound is spread in all directions; in addition, the sound waves can be absorbed by sound-absorbing cotton in the middle of the box body in the collision process with the inner wall of the silencing through groove, so that the purpose of comprehensive noise reduction and silencing is achieved;

3. the noise generated by gas guiding is reduced through the first silencer sleeved on the gas guide pipe; and the flue gas generated by the diesel oil is treated by the tail gas purifier, so that the environment-friendly effect is achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the case of the present invention;

FIG. 3 is a schematic view of the internal structure of the exhaust gas purifier of the present invention;

fig. 4 is an enlarged view of fig. 2 at a of the present invention.

In the figure, 1, a box body; 2. a power generation system; 3. a housing; 4. a tail gas purifier; 11. sound-absorbing cotton; 12. a silencing through groove; 121. a convex tooth; 13. a base; 131. a slot; 132. a movable door; 14. an access door; 15. a through hole; 21. an oil tank; 211. an oil delivery short pipe; 22. a heat radiation fan; 23. an engine; 24. a generator; 25. a controller; 31. a ventilation slot; 41. an air duct; 42. a tail pipe; 43. a first muffler; 44. a second muffler; 45. a DOC catalyst; 46. DPF filter element.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a low noise generating set, box 1 and the power generation system 2 of installing in box 1, the bottom of box 1 is fixed with base 13, and the lateral wall of base 13 is seted up and is supplied fork truck male slot 131. And a shell 3 which protrudes out of the side wall of the box body 1 and covers part of the side wall is fixed on the side wall of one side of the box body 1. The power generation system 2 comprises an oil tank 21 fixed in the base 13, and a cooling fan 22, an engine 23, a generator 24 and a controller 25 which are sequentially fixed on the base 13 from the side of the box 1 provided with the shell 3 to the side far away from the shell 3. The side wall of the box body 1 is hinged with an access door 14 corresponding to the connection part of the generator 24 and the engine 23; the side wall of the oil tank 21 is communicated with an oil delivery short pipe 211, and the part of the base 13 corresponding to the oil delivery short pipe 211 is hinged with a movable door 132. An exhaust purifier 4 is fixed on the box body 1, one end of the exhaust purifier 4 is communicated with an air duct 41 communicated with the engine 23, and the other end is communicated with an exhaust tail pipe 42; the upper end surface of the box body 1 is provided with a through hole 15 for the air duct 41 to pass through, and the part of the air duct 41 in the box body 1 is sleeved with a first silencer 43.

Referring to fig. 3, a second muffler 44, a DOC oxidizer 45, and a DPF filter 46 are sequentially connected to the exhaust gas cleaner 4 from the connection side of the gas duct 41 to the connection side of the tail pipe 42. The DOC oxidizer 45 is internally provided with a carrier coated with a catalyst, and the carrier oxidizes the reducing gas in the tail gas, so that the effect of eliminating toxic gas can be achieved. The DPF filter element 44 body is formed by a plurality of fine parallel pore channels, the parallel pore channels are separated by a ventilating pore wall, one end of each pore channel is open, and the other end of each pore channel is closed; tail gas enters the pore channel, and particles in the tail gas have larger particle size and cannot pass through the micropores, so that the tail gas is filtered on the pore wall to achieve the effect of eliminating black smoke (not shown in the figure); and the heat generated when the DOC oxidizer 45 oxidizes the gas heats the DPF filter element 44, so that the temperature required for regeneration of the DPF filter element 44 can be provided to extend the service life of the exhaust gas purifier 4.

Referring to fig. 2 and 4, the box body 1 is a double-layer structure with sound-absorbing cotton 11 embedded in the middle, a silencing through groove 12 is formed in the side wall of the box body 1 corresponding to the position covered by the shell 3, and the silencing through groove 12 extends along the height direction of the box body 1. The length of the silencing through groove 12 is gradually reduced from the inside to the outside of the box body 1, and the inner wall of the silencing through groove 12 which is inclined is convexly provided with a convex tooth 121. The shell 3 is provided with a plurality of groups of ventilation slots 31 which are arranged at intervals along the width direction of the shell 3, each group of ventilation slots 31 comprises a plurality of ventilation slots 31 which are arranged at intervals along the height direction of the shell 3, and the ventilation slots 31 extend along the width direction of the shell 3; and the part of the inner wall of the shell 3 which is not provided with the ventilation groove 31 is covered with the sound absorption cotton 11.

The implementation principle of the embodiment is as follows: when the air conditioner is in use, the operation controller 25 starts the engine 23 to drive the generator 24 to generate electricity, and when the engine 23 and the generator 24 operate, the heat radiation fan 22 discharges hot air generated by the engine 23 out of the box body 1 through the silencing through groove 12 and the ventilation groove 31, so that the purpose of heat radiation is achieved. While the hot air is discharged, the noise is diffused outwards along the communication path of the silencing through groove 12 and the ventilation groove 31, and the sound absorption cotton 11 absorbs the exhaust noise generated by the heat radiation fan 22 or the noise generated by other reasons; when the unabsorbed noise is transmitted to the silencing through grooves 12, the width of the silencing through grooves 12 is gradually reduced, and the resistance to the passage of the noise is increased, so that a part of the energy of the noise is consumed. Then, the inner wall of the silencing through groove 12 forms an uneven surface through the convex teeth 121, and sound is scattered in all directions in the vibration transmission process, so that the vibration quantity directly reaching ears of a person is reduced, and the silencing effect is achieved; and the sound wave can be absorbed by the sound-absorbing cotton 11 in the middle of the box body 1 in the collision process with the inner wall of the silencing through groove 12, so that the aim of silencing is fulfilled.

At last, when the part of the noise which is not absorbed and consumed is transmitted to the shell 3, the part of the noise can be absorbed by the sound absorption cotton 11 on the inner wall of the shell 3, or through the ventilation groove 31, the ventilation groove 31 and the silencing through groove 12 which are vertical to each other in the length direction are adopted to improve the flexibility of the path of the noise transmitted from the box body 1 to the outside of the shell 3, namely, the noise cannot reach the shell 3 at the transmission position directly, and through collision consumption and absorption of the silencing through groove 12, the collision absorption of the inner wall of the shell 3 and the collision consumption of the ventilation groove 31 finally achieve the purpose of. The smoke generated in the running process of the engine 23 is transmitted to the tail gas purifier 4 through the air duct 41 for filtering treatment, and the exhaust noise of the engine 23 is reduced under the action of the first silencer 43 on the air duct 41; after the flue gas is treated by the tail gas purifier 4, the gas is discharged through a tail gas pipe 42; namely, the exhaust noise and the exhaust noise of the generator 24 group are reduced by the case 1, the housing 3 and the first muffler 43.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A low noise generating set which characterized in that: the power generation system comprises a box body (1) and a power generation system (2) arranged in the box body (1), wherein a shell (3) which protrudes out of the side wall of the box body (1) and covers part of the side wall is fixed on the side wall of one side of the box body (1), a ventilation groove (31) is formed in the side wall of the shell (3), and a base (13) is fixed at the bottom of the box body (1); the box body (1) is of a double-layer structure with sound-absorbing cotton (11) embedded in the middle, and a sound-absorbing through groove (12) is formed in the side wall of the box body (1) corresponding to the position covered by the shell (3); the length of the silencing through groove (12) is gradually reduced from the inside to the outside of the box body (1), and the inner wall of the silencing through groove (12) which is inclined is convexly provided with convex teeth (121).

2. A low noise generator set according to claim 1, wherein: the shell (3) is provided with a plurality of groups of ventilation grooves (31) which are arranged at intervals along the width direction of the shell (3), and each group of ventilation grooves (31) comprises a plurality of ventilation grooves (31) which are arranged at intervals along the height direction of the shell (3); and the part of the inner wall of the shell (3) which is not provided with the ventilation groove (31) is wrapped with sound absorption cotton (11).

3. A low noise generator set according to claim 1, wherein: the ventilation groove (31) extends along the width direction of the shell (3), and the silencing through groove (12) extends along the height direction of the box body (1).

4. A low noise generator set according to claim 1, wherein: the power generation system (2) comprises an oil tank (21) fixed in the base (13), and a cooling fan (22), an engine (23), a generator (24) and a controller (25) which are sequentially fixed on the base (13) from one side of the box body (1) provided with the shell (3) to one side far away from the shell (3).

5. A low noise power generator set according to claim 4, wherein: an exhaust purifier (4) is fixed on the box body (1), one end of the exhaust purifier (4) is communicated with an air duct (41) communicated with the engine (23), and the other end of the exhaust purifier is communicated with an exhaust tail pipe (42); the upper end face of the box body (1) is provided with a through hole (15) for the air guide pipe (41) to pass through, and the part of the air guide pipe (41) in the box body (1) is sleeved with a first silencer (43).

6. A low noise power generator set according to claim 5, wherein: and a second muffler (44), a DOC oxidizer (45) and a DPF filter element (46) are sequentially communicated with one side of the tail gas purifier (4) connected with the tail gas pipe (41) and one side of the tail gas pipe (42).

7. A low noise generator set according to claim 1, wherein: an access door (14) is hinged to the side wall of the box body (1) corresponding to the connection part of the generator (24) and the engine (23); the side wall of the oil tank (21) is communicated with an oil delivery short pipe (211), and the part of the base (13) corresponding to the oil delivery short pipe (211) is hinged with a movable door (132).

8. A low noise generator set according to claim 1, wherein: the lateral wall of base (13) is seted up and is supplied fork truck male slot (131).