CN108429386B - Diesel generator with good noise reduction effect - Google Patents
Diesel generator with good noise reduction effect Download PDFInfo
- Publication number
- CN108429386B CN108429386B CN201810291311.6A CN201810291311A CN108429386B CN 108429386 B CN108429386 B CN 108429386B CN 201810291311 A CN201810291311 A CN 201810291311A CN 108429386 B CN108429386 B CN 108429386B
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- air inlet
- generator
- air outlet
- mute cover
- pipe
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- 230000000694 effects Effects 0.000 title claims abstract description 35
- 230000009467 reduction Effects 0.000 title claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 230000003584 silencer Effects 0.000 claims description 37
- 230000030279 gene silencing Effects 0.000 claims description 34
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Exhaust Silencers (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to the field of motors, in particular to a diesel generator with good noise reduction effect, which comprises a base, and a mute cover, a diesel engine and a generator which are fixed on the base, wherein the mute cover is detachably connected with the base through bolts, the diesel engine and the generator are arranged in the mute cover, a speed reducer is arranged between the diesel engine and the generator, a crankshaft of the diesel engine is connected with a driving shaft of the speed reducer through a first elastic coupling, a crankshaft of the generator is connected with a driven shaft of the speed reducer through a second elastic coupling, and the design of the mute cover, the first elastic coupling and the second elastic coupling effectively reduces noise of the diesel engine and the generator.
Description
Technical Field
The invention relates to the field of motors, in particular to a diesel generator with good noise reduction effect.
Background
At present, the motor is widely applied to the electronic and automatic equipment industries. The diesel generator generally comprises a diesel engine and a generator, wherein a crankshaft of the diesel engine is fixedly connected with a crankshaft of the generator, so that the diesel engine is utilized to drive the generator to rotate, and power generation is realized. During operation, the diesel engine and the generator can vibrate, and the vibration of the diesel engine and the generator is synchronous, so that the whole vibration of the diesel generator is very severe, not only can surrounding constructors be influenced, other people cannot work normally, but also precision elements such as meters of the diesel generator can be damaged, and the service life is influenced.
Aiming at the problem, a person designs a novel solution to the problem by adding sound-absorbing cotton into a motor product and absorbing noise by utilizing the sound-absorbing cotton, wherein the noise-reducing mode is very simple, can not well eliminate the noise and has great influence on the surrounding environment.
Disclosure of Invention
Aiming at the problems that the existing diesel generator is large in noise and has a certain influence on the health of people, the invention provides the diesel generator with good noise reduction effect, and the problem that the traditional diesel generator only depends on sound absorption cotton for noise reduction is solved.
The invention provides a diesel generator with good noise reduction effect, which comprises a base, and a mute cover, a diesel engine and a generator, wherein the mute cover, the diesel engine and the generator are fixed on the base, the mute cover is detachably connected with the base through bolts, the diesel engine and the generator are arranged in the mute cover, a speed reducer is arranged between the diesel engine and the generator, a crankshaft of the diesel engine is connected with a driving shaft of the speed reducer through a first elastic coupling, a crankshaft of the generator is connected with a driven shaft of the speed reducer through a second elastic coupling, an air inlet is formed in one end of the mute cover, which is positioned on the generator, an air outlet is formed in one end of the mute cover, an air inlet silencer is detachably arranged on the mute cover at the air outlet, an air outlet silencer is detachably arranged on the mute cover, a heat dissipation hole is formed in the mute cover, and sound absorbing cotton is arranged on the inner wall of the mute cover. Through setting up first elastic coupling and second elastic coupling, make the vibration of diesel engine, speed reducer and generator obtain suppressing, silence cover makes diesel generator wholly be in the confined environment, combines the silencer of air intake and air outlet, makes the noise obtain suppressing.
Preferably, the diesel generator with good noise reduction effect comprises an air inlet silencer shell, an air inlet pipe and a silencing pipe, wherein the air inlet pipe and the silencing pipe are arranged inside the air inlet silencer shell, the air inlet pipe is a horn-shaped pipeline, the big head end of the horn mouth of the air inlet pipe is connected with an air inlet, the small head end of the horn mouth of the air inlet pipe is communicated with the middle part of the silencing pipe, two ends of the silencing pipe are communicated with the outside of the air inlet silencer shell, a plurality of perforations are respectively arranged on the pipe wall between the middle part of the silencing pipe and two ends of the silencing pipe, a closed cavity is formed in the part of the air inlet silencer shell corresponding to the plurality of perforations, and a silencing plate is arranged on the inner wall of the cavity. The big head end of the horn mouth of the air inlet pipe is connected with the air inlet, when the diesel generator works, negative pressure is formed in the mute cover, and air outside the mute cover is sucked into the horn mouth, so that air intake is smooth; the horn-shaped air inlet pipe is communicated with the middle part of the silencing pipe to form a resistive silencing structure, so that the silencing structure has the effect of eliminating middle and high frequency noise; the perforation of the pipe wall of the silencing pipe is matched with the cavity to form a resonant cavity type silencer, which belongs to a resistant silencing structure and has the effect of eliminating middle and low frequency noise; the structure of the whole air inlet muffler does not influence the air inlet efficiency, and can effectively prevent and weaken the outward transmission of sound energy.
Preferably, the diesel generator with good noise reduction effect comprises a plurality of sound wave reflecting plates with arc sections and connected with each other. The sound wave reflecting plate is arranged on the inner wall of the cavity, and can generate a reflecting effect on sound due to the arc surface of the sound wave reflecting plate, so that the sound in the cavity is reflected and passes through the perforation of the wall of the silencing pipe again, the sound resonance effect in the cavity is enhanced, and a better resonance silencing effect is achieved.
Preferably, the diesel generator with good noise reduction effect comprises an air outlet silencer shell and a plurality of porous plates, wherein an air outlet pipe communicated with two ends of the air outlet silencer shell is arranged inside the air outlet silencer shell, the porous plates are stacked in the air outlet pipe and coaxial with the air outlet pipe, and the small holes of the porous plates are staggered. Considering the smoothness of exhaust, the air outlet pipe pipeline of the air outlet muffler has simple structure and smooth ventilation, and the laminated porous plates and the staggered small holes play a role in resistive noise elimination.
Preferably, the diesel generator with good noise reduction effect is characterized in that the air inlet and the air outlet are both provided with screens. The screen mesh plays a role in preventing foreign matters from entering the air inlet and the air outlet to block the air duct, the air inlet muffler and the air outlet muffler.
Preferably, the diesel generator with good noise reduction effect is characterized in that the heat dissipation device is composed of a plurality of heat dissipation fans, and the heat dissipation fans are symmetrically arranged on the inner side of the mute cover respectively.
Preferably, in the diesel generator with good noise reduction effect, a transparent observation window is arranged on the mute cover.
Preferably, in the diesel generator with good noise reduction effect, a temperature sensor is arranged inside the mute cover, and the temperature sensor is connected with the heat dissipation device. The heat dissipation device can adjust power according to feedback information of the temperature sensor, and energy consumption is saved.
The invention has the advantages that: compared with the traditional motor, the invention has the advantages that the elastic coupling and the speed reducer are arranged, so that the whole vibration of the diesel generator can be well restrained, the diesel generator has good practicability, in addition, the design of the air inlet silencer and the air outlet silencer on the silencing cover is beneficial to the targeted noise reduction of different noise sources, the noise reduction effect on noise of each frequency is excellent, the structure rules of the air inlet silencer and the air outlet silencer lead the production to be standardized and modularized, greatly reduce the transportation volume of a unit and greatly save raw materials.
Drawings
The invention is further described below with reference to the accompanying drawings, in conjunction with examples:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the intake muffler of the present invention;
FIG. 3 is an enlarged view of part A of FIG. 2;
fig. 4 is a schematic structural view of the air-out muffler of the present invention.
1. A base; 2. a mute cover; 3. a diesel engine; 4. a generator; 5. a speed reducer; 6. a first elastic coupling; 7. a second elastic coupling; 8. an intake muffler; 9. an air outlet muffler; 10. a heat sink; 11. sound absorbing cotton; 12. a screen; 13. a transparent viewing window; 14. a temperature sensor; 801. an intake muffler housing; 802. an air inlet pipe; 803. an acoustic pipe; 804. perforating; 805. a cavity; 806. a muffler plate; 807. an acoustic wave reflecting plate; 901. an air outlet muffler shell; 902. a porous plate; 903. an air outlet pipe; 904. and (3) small holes.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
The diesel generator with good noise reduction effect shown in fig. 1 comprises a base 1 and a mute cover 2, a diesel engine 3 and a generator 4 which are fixed on the base 1, wherein the mute cover 2 is detachably connected with the base 1 through bolts, the diesel engine 3 and the generator 4 are arranged inside the mute cover 2, a speed reducer 5 is arranged between the diesel engine 3 and the generator 4, a crankshaft of the diesel engine 3 is connected with a driving shaft of the speed reducer 5 through a first elastic coupling 6, a crankshaft of the generator 4 is connected with a driven shaft of the speed reducer 5 through a second elastic coupling 7, one end of the mute cover 2, which is positioned on the generator 4, is provided with an air inlet, one end of the mute cover 2, which is positioned on the diesel engine, is provided with an air outlet, an air inlet silencer 8 is detachably arranged on the mute cover 2 at the air outlet, an air outlet silencer 9 is detachably arranged on the mute cover 2, a heat dissipation hole is formed inside the mute cover 2, and a sound absorbing cotton 11 is arranged on the inner wall of the mute cover. Through setting up first elastic coupling and second elastic coupling, make the vibration of diesel engine, speed reducer and generator obtain suppressing, silence cover makes diesel generator wholly be in the confined environment, combines the silencer of air intake and air outlet, makes the noise obtain suppressing.
In a specific embodiment, as shown in fig. 2, the air intake silencer comprises an air intake silencer housing 801, an air inlet pipe 802 and a silencing pipe 803, the air inlet pipe and the silencing pipe are arranged inside the air intake silencer housing, the air inlet pipe is a horn-shaped pipeline, a large horn end of the air inlet pipe is connected with an air inlet, a small horn end of the air inlet pipe is communicated with the middle part of the silencing pipe, two ends of the silencing pipe are communicated with the outside of the air intake silencer housing, a plurality of perforations 804 are respectively arranged on the pipe wall between the middle part of the silencing pipe and two ends of the silencing pipe, a closed cavity 805 is formed in the air intake silencer housing at positions corresponding to the plurality of perforations, and a silencing plate 806 is arranged on the inner wall of the cavity.
The big head end of the horn mouth of the air inlet pipe is connected with the air inlet, when the diesel generator works, negative pressure is formed in the mute cover, and air outside the mute cover is sucked into the horn mouth, so that air intake is smooth; the horn-shaped air inlet pipe is communicated with the middle part of the silencing pipe to form a resistive silencing structure, so that the silencing structure has the effect of eliminating middle and high frequency noise; the perforation of the pipe wall of the silencing pipe is matched with the cavity to form a resonant cavity type silencer, which belongs to a resistant silencing structure and has the effect of eliminating middle and low frequency noise; the structure of the whole air inlet muffler does not influence the air inlet efficiency, and can effectively prevent and weaken the outward transmission of sound energy.
In a specific embodiment, the diesel generator with good noise reduction effect includes, as shown in fig. 3, a plurality of acoustic reflectors 807 with arc-shaped cross sections and connected to each other. The sound wave reflecting plate is arranged on the inner wall of the cavity, and can generate a reflecting effect on sound due to the arc surface of the sound wave reflecting plate, so that the sound in the cavity is reflected and passes through the perforation 804 on the wall of the silencing pipe again, the sound resonance effect in the cavity is enhanced, and a better resonance silencing effect is achieved.
In a specific embodiment, as shown in fig. 4, the air-out muffler includes an air-out muffler housing 901 and a plurality of perforated plates 902, an air-out duct 903 communicating two ends of the air-out muffler housing is disposed inside the air-out muffler housing, the plurality of perforated plates are stacked in the air-out duct and coaxial with the air-out duct, and the small holes 904 of the plurality of perforated plates are staggered. Considering the smoothness of exhaust, the air outlet pipe pipeline of the air outlet muffler has simple structure and smooth ventilation, and the laminated porous plates and the staggered small holes play a role in resistive noise elimination.
In a specific embodiment, the diesel generator with good noise reduction effect is characterized in that the screen mesh 12 is respectively arranged at the air inlet and the air outlet, and the screen mesh can block dust and impurities, so that the effect of preventing the foreign matters from entering the air inlet and the air outlet to block the air duct, the air inlet silencer and the air outlet silencer is achieved.
In a specific embodiment, the diesel generator with good noise reduction effect is provided, the heat dissipating device 10 is composed of a plurality of heat dissipating fans, the heat dissipating fans are respectively and symmetrically arranged on the inner side of the mute cover 2, and the heat inside the mute cover can be quickly dissipated by the design of the heat dissipating fans, so that the service lives of the diesel engine and the generator are prolonged.
In a specific embodiment, in the diesel generator with good noise reduction effect, the transparent observation window 13 is arranged on the mute cover 2, and the transparent observation window is designed to facilitate the observation of the internal condition by the staff.
In a specific embodiment, the diesel generator with good noise reduction effect is characterized in that the temperature sensor 14 is arranged inside the mute cover 2, the temperature sensor 14 is connected with the heat dissipation device 10, and the design of the temperature sensor 14 can automatically dissipate heat inside the mute cover 2, so that the use of people is facilitated.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (6)
1. The diesel generator is characterized in that the mute cover is detachably connected with the base through bolts, the diesel engine and the generator are arranged inside the mute cover, a speed reducer is arranged between the diesel engine and the generator, a crankshaft of the diesel engine is connected with a driving shaft of the speed reducer through a first elastic coupling, the crankshaft of the generator is connected with a driven shaft of the speed reducer through a second elastic coupling, an air inlet is formed in one end of the mute cover, which is positioned on the generator, an air outlet is formed in one end of the mute cover, an air inlet silencer is detachably arranged on the mute cover at the air inlet, an air outlet silencer is detachably arranged on the mute cover at the air outlet, a heat dissipation hole is formed in the mute cover, and sound absorbing cotton is arranged on the inner wall of the mute cover; the air inlet silencer comprises an air inlet silencer shell, an air inlet pipe and a silencing pipe, wherein the air inlet pipe and the silencing pipe are arranged inside the air inlet silencer shell, the air inlet pipe is a horn-shaped pipeline, the big head end of the horn mouth of the air inlet pipe is connected with an air inlet, the small head end of the horn mouth of the air inlet pipe is communicated with the middle part of the silencing pipe, two ends of the silencing pipe are communicated with the outside of the air inlet silencer shell, a plurality of perforations are respectively formed in the pipe wall between the middle part of the silencing pipe and two ends of the silencing pipe, a closed cavity is formed in the air inlet silencer shell at the position corresponding to the plurality of perforations, and a silencing plate is arranged on the inner wall of the cavity.
2. The diesel generator with good noise reduction effect according to claim 1, wherein the noise elimination plate comprises a plurality of acoustic wave reflection plates which are arc-shaped in cross section and are connected with each other.
3. The diesel generator with good noise reduction effect according to claim 1, wherein the air outlet silencer comprises an air outlet silencer shell and a plurality of porous plates, air outlet pipes communicated with two ends of the air outlet silencer shell are arranged inside the air outlet silencer shell, the plurality of porous plates are stacked in the air outlet pipes and coaxial with the air outlet pipes, and the small holes of the plurality of porous plates are staggered.
4. The diesel generator with good noise reduction effect according to claim 1, wherein the air inlet and the air outlet are respectively provided with a screen.
5. The diesel generator with good noise reduction effect according to claim 1, wherein a transparent observation window is arranged on the mute cover.
6. The diesel generator with good noise reduction effect according to claim 1, wherein a temperature sensor is arranged inside the mute cover, and the temperature sensor is connected with the heat dissipation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291311.6A CN108429386B (en) | 2018-03-30 | 2018-03-30 | Diesel generator with good noise reduction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291311.6A CN108429386B (en) | 2018-03-30 | 2018-03-30 | Diesel generator with good noise reduction effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108429386A CN108429386A (en) | 2018-08-21 |
| CN108429386B true CN108429386B (en) | 2024-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810291311.6A Active CN108429386B (en) | 2018-03-30 | 2018-03-30 | Diesel generator with good noise reduction effect |
Country Status (1)
| Country | Link |
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| CN (1) | CN108429386B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926779B (en) * | 2020-08-13 | 2022-04-19 | 安徽省万豪水坝节能技术有限公司 | Sound-proof noise-reducing bottom cross shaft plate-turning steel gate dam |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202883120U (en) * | 2012-09-22 | 2013-04-17 | 泰州市凯华柴油发电机组有限公司 | Noiseless diesel generator set |
| CN206942874U (en) * | 2017-07-26 | 2018-01-30 | 成都泛茂科技发展有限公司 | A kind of flat vibrationproof diesel-driven generator |
| CN207926348U (en) * | 2018-03-30 | 2018-09-28 | 杭州新尚科技咨询有限公司 | A kind of diesel-driven generator of excellent noise reduction effect |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100027445A (en) * | 2008-09-02 | 2010-03-11 | 삼성중공업 주식회사 | Silencer for ship's engine |
| CN203532004U (en) * | 2013-08-27 | 2014-04-09 | 常州华尔澜工具有限公司 | Improved diesel engine silencer |
-
2018
- 2018-03-30 CN CN201810291311.6A patent/CN108429386B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202883120U (en) * | 2012-09-22 | 2013-04-17 | 泰州市凯华柴油发电机组有限公司 | Noiseless diesel generator set |
| CN206942874U (en) * | 2017-07-26 | 2018-01-30 | 成都泛茂科技发展有限公司 | A kind of flat vibrationproof diesel-driven generator |
| CN207926348U (en) * | 2018-03-30 | 2018-09-28 | 杭州新尚科技咨询有限公司 | A kind of diesel-driven generator of excellent noise reduction effect |
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| Publication number | Publication date |
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| CN108429386A (en) | 2018-08-21 |
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Effective date of registration: 20240715 Address after: No. 1088 Tangbian, Jishan Village, Xingtai Development Zone, Changtai District, Zhangzhou City, Fujian Province 363900 Applicant after: FUJIAN AOSIF ELECTRIC POWER SYSTEM Co.,Ltd. Country or region after: China Applicant after: Wu Zhen Address before: 310000, Room 301-2, Building 1, Xinye Road, Qiaosi Street, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU XINSHANG TECHNOLOGY CONSULTING Co.,Ltd. Country or region before: China |
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