WO2009043222A1 - Système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux - Google Patents

Système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux Download PDF

Info

Publication number
WO2009043222A1
WO2009043222A1 PCT/CN2008/001155 CN2008001155W WO2009043222A1 WO 2009043222 A1 WO2009043222 A1 WO 2009043222A1 CN 2008001155 W CN2008001155 W CN 2008001155W WO 2009043222 A1 WO2009043222 A1 WO 2009043222A1
Authority
WO
WIPO (PCT)
Prior art keywords
muffler
exhaust
pipe
generator set
primary
Prior art date
Application number
PCT/CN2008/001155
Other languages
English (en)
Chinese (zh)
Inventor
Henglin Xiao
Original Assignee
Wuxi Kipor Power Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Kipor Power Co., Ltd filed Critical Wuxi Kipor Power Co., Ltd
Publication of WO2009043222A1 publication Critical patent/WO2009043222A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/02—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate silencers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1822—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration for fixing exhaust pipes or devices to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts

Definitions

  • the present invention relates to an exhaust muffler system for a silent generator set, and more particularly to a combined exhaust muffler system, which belongs to the technical field of internal combustion engine muffler systems.
  • a conventional engine-driven generator set usually employs a primary exhaust muffler, which is generally sufficient.
  • manufacturers often use the enclosure of the generator set to block the noise, and use some high-end exhaust muffler to eliminate noise, thus forming a silent generator set.
  • the internal structure of the high-grade exhaust muffler is complicated, and the cost is high, and the matching model is single.
  • the object of the present invention is to overcome the above-mentioned deficiencies, thereby providing an exhaust muffler system for a silent generator set, which not only increases the total working volume of the muffler, but also improves the muffling effect, and has the flexibility of selecting various arrangement schemes; Reduce the overall noise level of the generator set, the noise reduction effect is remarkable, and the adaptability is wide.
  • An exhaust muffler system for a silent generator set comprising an engine, an exhaust pipe, a compartment and a combined muffler, wherein the combined muffler is composed of a primary muffler and a secondary muffler
  • the outlet pipe of the primary muffler is flanged with the intake pipe of the secondary muffler, and can be disassembled and separated, and the primary muffler and the secondary muffler are arranged in the compartment.
  • the combustion exhaust gas of the engine passes through an exhaust pipe with a smooth transition elbow, which is successively entered into the primary muffler and the secondary muffler for muffling treatment, and finally discharged from the exhaust tail pipe.
  • the pipe behind the inlet end flange of the primary muffler is provided with a expansion pipe section, and the pipe diameter of the expansion pipe section gradually increases along the flow direction of the air flow, and the end of the small cross-sectional area is located in the upstream direction of the exhaust gas flow.
  • the end with a large cross-sectional area is located in the downstream direction of the exhaust gas flow, and the length of the expansion pipe section is 0 to 100 mm.
  • the sufficiency of the cross-sectional area of the cross-section of the tube is 1. 4 ⁇ 4. 0.
  • a flexible pipe section is disposed in the exhaust pipe, and the length of the flexible pipe section is between 1/3 and 1/2 of the total length of the exhaust pipe.
  • the surface of the exhaust pipe is tightly wrapped to cover the sound absorbing and insulating material.
  • the outer surface of the primary muffler is covered with a flexible sound absorbing and insulating material, and the two ends are respectively supported by the support frame, and the bracket is fixed by bolts on the chassis of the generator set.
  • the compartment is located at one end of the generator set, and the top surface of the compartment is a cooling air exhaust grille, and the exhaust grille is separately provided with a diameter than the secondary muffler in addition to the exhaust holes arranged in an array form. a circular hole having a large outer diameter of the exhaust tail pipe, and the exhaust tail pipe is coaxially opposed to the circular hole;
  • the invention adopts a combined two-stage muffler scheme, which not only increases the total working volume of the muffler, but also improves the muffling effect, and has the flexibility of selecting various arrangement schemes; in particular, the flange connection mode between the muffler can be different for different specifications.
  • the primary and secondary mufflers are reconfigured to meet the different needs of various models; the smooth transitional turn mode avoids large flow resistance at the sharp bend of the pipe, which helps to reduce exhaust back pressure and reduce engine power loss.
  • the exhaust pipe with flexible section greatly attenuates the vibration of the engine itself to the muffler system and the partition baffle, reduces the forced vibration of the unit, and improves the reliability of the installation of the muffler system;
  • the setting makes the engine exhaust gas enter the primary muffler in a step-by-step expansion mode, which reduces the rate of change of the pressure gradient in the exhaust system and helps to reduce the noise.
  • the primary muffler is fixed to the generator set chassis by the bracket to minimize its force. The amplitude of the vibration, thus ensuring the stability of the secondary muffler; pipe connection method
  • the use of heat-resistant gaskets eliminates the leakage of combustion exhaust gas inside the genset cabinet, which helps to improve the working environment of the engine and generator.
  • the flexible sound-absorbing and heat-insulating material can be shielded and absorbed by the surface of the exhaust pipe and the muffler.
  • the noise radiation and heat radiation can also shield and absorb the fan noise from the engine tank radiator and reduce the overall noise level of
  • Figure 1 is a perspective view showing the decomposition of the exhaust muffler system of the present invention.
  • Fig. 2 is a schematic view showing the assembly of the exhaust muffling system after the rear circumference of the present invention.
  • Figure 3 is a partial cross-sectional view taken along line A of Figure 2 of the present invention.
  • Figure 4 is a schematic illustration of the expansion section of the vent line of the present invention.
  • the invention mainly consists of an engine 1, an exhaust pipe 2, a flexible pipe section 21, a primary muffler 3, a bracket 31, a expansion pipe section 32, a secondary muffler 4, a compartment 5, a partition 6, a chassis 7, an engine radiator 8, a fan. 9, sound absorbing and insulating material 10, rear wall 1, exhaust grill 12, flange seals 13a, 13b, bolts 14, exhaust pipe cap 15 and so on.
  • an embodiment of an exhaust muffler system for a silent generator set includes an exhaust pipe 2, a primary muffler 3, a secondary muffler 4, a compartment 5, and a sound absorbing and insulating material 10.
  • the primary muffler 3 and the secondary muffler 4 are each arranged in a relatively independent compartment 5, the outlet pipe of the primary muffler 3 is flanged to the intake pipe of the secondary muffler 4, and the combustion exhaust gas of the engine 1 passes through a row having a smooth transition elbow
  • the trachea 2 is successively entered into the primary muffler 3 and the secondary muffler 4 for silencing treatment, and finally discharged from the exhaust tail pipe.
  • the exhaust pipe 2 is connected to the exhaust manifold of the engine 1 by a flange.
  • the surface of the exhaust pipe 2 is covered by a flexible sound absorbing and insulating material 10, and the exhaust pipe 2 includes a flexible pipe section 21, and the length of the flexible pipe section 21 is Between 1/3 and 1/2 of the total length of the exhaust pipe, it is easy to install, and can attenuate or block the vibration of the engine 1 to propagate to other components; the end flange of the exhaust pipe 2 is in the partition 6 of the compartment 5.
  • the flange is connected to the inlet end of the intake pipe of the primary muffler 3, and the partition plate 6 is provided with an exhaust through hole adapted to the inner diameter of the exhaust pipe, and a flange connecting bolt hole is formed around the exhaust through hole, and a set of bolts 14 are worn.
  • the bolt hole is screwed on the nut, so that the two flange faces are tightly clamped from the two sides, thereby ensuring the smoothness of the exhaust passage and relying on the support of the partition 6 to stabilize the exhaust pipe 2.
  • the pipe has a expansion pipe section 32 on the pipe behind the inlet end flange of the primary muffler 3.
  • the length of the expansion pipe section 32 is 25 to 35 mm in this embodiment, and the flow cross-sectional area of the expansion pipe section 32 gradually increases along the flow direction of the airflow.
  • the cross-section expansion of the expansion pipe section Cross-sectional area of the outlet end of the inlet / outlet end of the cross-sectional area
  • the primary muffler 3 is laterally arranged at the bottom of the compartment 5, and its outer surface is covered with a flexible sound absorbing and insulating material 10, and the two ends are respectively supported by the bracket 3 1 , and the bracket 31 is bolted to the genset chassis 7 .
  • the compartment 5 surrounded by the rear wall 11 and the partition 6 is located at one end of the generator set, and the top surface of the compartment 5 is a cooling air exhaust grill 12, except for the exhaust holes arranged in an array on the grille.
  • a circular hole having a larger outer diameter (10 to 15 mm in diameter) than the exhaust tail pipe of the secondary muffler 4 is separately provided, and the exhaust tail pipe is coaxially opposed to the circular hole and the end face and the exhaust grille 12 is basically flat; rear circumference 1 1
  • the inner surface is provided with a flexible sound absorbing and insulating material 10 for shielding the noise radiated from the inside of the casing;
  • the partition plate 6 between the compartment 5 and the engine 1 is provided with a rectangular hole, and the water tank of the engine is arranged in the hole
  • the radiator 8 and the radiator 8 are mounted on the engine side with a fan 9 driven by the engine 1. The fan 9 blows cooling air through the radiator 8 and enters the compartment 5 to cool the muffler having a higher surface temperature and then pass
  • a heat-resistant flange seal 13a or 13b is provided between the flange connection faces of the exhaust muffler system.
  • the exhaust pipe cap 15 is installed at the end of the exhaust pipe, and the upper side of the exhaust pipe cap has a reversible cover. When the engine 1 is running, the cover is opened by the impact of the exhaust airflow, and when the engine 1 stops running, the cover is gravity-receiving. The effect is to cover the nozzle by itself and to prevent rain from entering.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux qui comporte un dynamoteur (1), un tuyau d'échappement (2) et un pot d'échappement de type combiné qui se compose d'un pot d'échappement primaire (3) et d'un pot d'échappement secondaire (4). Un conduit d'échappement du pot d'échappement primaire (3) est relié à un tube d'entrée du pot d'échappement secondaire (4) via une bride. Le pot d'échappement primaire (3) et le pot d'échappement secondaire (4) sont placés dans une boîte séparée (5). Une conduite, qui est placée au niveau d'un côté entrée du pot d'échappement primaire (3), est munie d'une section de tuyau d'expansion (32). Le tuyau d'échappement (2) est muni d'une section de tuyau flexible (21).
PCT/CN2008/001155 2007-09-30 2008-06-16 Système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux WO2009043222A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007101335125A CN101183815A (zh) 2007-09-30 2007-09-30 一种静音发电机组的排气消音系统
CN200710133512.5 2007-09-30

Publications (1)

Publication Number Publication Date
WO2009043222A1 true WO2009043222A1 (fr) 2009-04-09

Family

ID=39448945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001155 WO2009043222A1 (fr) 2007-09-30 2008-06-16 Système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux

Country Status (2)

Country Link
CN (1) CN101183815A (fr)
WO (1) WO2009043222A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107676171A (zh) * 2017-10-26 2018-02-09 江苏东方康弛机电科技有限公司 一种静音箱体外壳结构用后围组件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101183815A (zh) * 2007-09-30 2008-05-21 无锡开普动力有限公司 一种静音发电机组的排气消音系统
CN107476853B (zh) * 2017-09-20 2023-03-31 联优机械(常熟)有限公司 透平膨胀发电机组的降噪节能装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921040A (en) * 1987-03-16 1990-05-01 Motoren-Werke Mannheim Ag Power thermo-coupling unit
CN2093903U (zh) * 1991-03-28 1992-01-22 成都市东城区蓉城汽车消声器厂 汽车抗式扩张型、共振型复合消声器
CN2479217Y (zh) * 2001-06-12 2002-02-27 贵州红湖机械厂 车用排汽消声器总成
CN2634125Y (zh) * 2003-07-09 2004-08-18 中国嘉陵工业股份有限公司（集团） 一种摩托车消声器
CN2787861Y (zh) * 2005-06-01 2006-06-14 重庆宗申技术开发研究有限公司 具有进气加热装置的发动机
CN101183815A (zh) * 2007-09-30 2008-05-21 无锡开普动力有限公司 一种静音发电机组的排气消音系统
CN201090276Y (zh) * 2007-09-30 2008-07-23 无锡开普动力有限公司 一种静音发电机组的排气消音系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921040A (en) * 1987-03-16 1990-05-01 Motoren-Werke Mannheim Ag Power thermo-coupling unit
CN2093903U (zh) * 1991-03-28 1992-01-22 成都市东城区蓉城汽车消声器厂 汽车抗式扩张型、共振型复合消声器
CN2479217Y (zh) * 2001-06-12 2002-02-27 贵州红湖机械厂 车用排汽消声器总成
CN2634125Y (zh) * 2003-07-09 2004-08-18 中国嘉陵工业股份有限公司（集团） 一种摩托车消声器
CN2787861Y (zh) * 2005-06-01 2006-06-14 重庆宗申技术开发研究有限公司 具有进气加热装置的发动机
CN101183815A (zh) * 2007-09-30 2008-05-21 无锡开普动力有限公司 一种静音发电机组的排气消音系统
CN201090276Y (zh) * 2007-09-30 2008-07-23 无锡开普动力有限公司 一种静音发电机组的排气消音系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107676171A (zh) * 2017-10-26 2018-02-09 江苏东方康弛机电科技有限公司 一种静音箱体外壳结构用后围组件

Also Published As

Publication number Publication date
CN101183815A (zh) 2008-05-21

Similar Documents

Publication Publication Date Title
WO2013034019A1 (fr) Générateur entraîné par un moteur thermique
CN206190400U (zh) 静音型风冷内燃机发电机组
CN105697103A (zh) 一种发动机排气系统消声器
WO2009043222A1 (fr) Système atténuateur de bruit d'échappement destiné à un ensemble dynamoteur à silencieux
CN108104903A (zh) 一种柴油机消声器
CN201090276Y (zh) 一种静音发电机组的排气消音系统
CN209908611U (zh) 一种柴油发电系统用静音箱
CN206917701U (zh) 排气消声器及排气系统
CN215109662U (zh) 一种离心式消防排烟风机
CN206487543U (zh) 一种柴油发电机用排气消声器系统
CN211422729U (zh) 一种用于汽车的排气管消声器
CN2823566Y (zh) 一种消声器
CN212583819U (zh) 一种超静音低噪声发电机组
CN204984543U (zh) 一种电源车用阻抗复合型消声器
CN213116437U (zh) 促进平衡的排气消声器
CN210858940U (zh) 一种带有双层风道的超静音型柴油发电机组
CN209802129U (zh) 带消声器的冷却塔
CN104088685A (zh) 一种排气净化消声器
CN114215707A (zh) 消声装置和风力发电机组
CN209960730U (zh) 燃机罩壳排风风机降噪系统
KR20090063494A (ko) 배기 방사음 저감타입 차량의 배기 장치
CN217872971U (zh) 一种通用型发电机消音器
CN201070972Y (zh) 空气滤清器顶置式城市客车
CN219197640U (zh) 一种罗茨风机消音器
CN218351119U (zh) 一种消音器及具有其的暖通装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08757437

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08757437

Country of ref document: EP

Kind code of ref document: A1