CN203532004U - Improved diesel engine silencer - Google Patents

Improved diesel engine silencer Download PDF

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Publication number
CN203532004U
CN203532004U CN201320524691.6U CN201320524691U CN203532004U CN 203532004 U CN203532004 U CN 203532004U CN 201320524691 U CN201320524691 U CN 201320524691U CN 203532004 U CN203532004 U CN 203532004U
Authority
CN
China
Prior art keywords
housing
hole
orifice plate
diesel engine
dunnage
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201320524691.6U
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Chinese (zh)
Inventor
许媛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU HRL TOOLS Co Ltd
Original Assignee
CHANGZHOU HRL TOOLS 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 CHANGZHOU HRL TOOLS Co Ltd filed Critical CHANGZHOU HRL TOOLS Co Ltd
Priority to CN201320524691.6U priority Critical patent/CN203532004U/en
Application granted granted Critical
Publication of CN203532004U publication Critical patent/CN203532004U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Exhaust Silencers (AREA)

Abstract

The utility model relates to an improved diesel engine silencer. The improved diesel engine silencer comprises a shell body, wherein an air inlet pipe is arranged at one end of the shell body, an air outlet pipe is arranged at the other end of the shell body, a supporting plate, a hole plate, a silencing pipe and a catalyzing device are arranged inside the shell body, the supporting plate and the hole plate are arranged at intervals in the axial direction of the shell body, after the supporting plate and the hole plate are fixed to the inner surface of the shell body, the shell body, the supporting plate and the hole plate define an expansion cavity, the supporting plate is provided with an assembling hole, the hole plate is provided with a large hole and a small hole, one end of the silencing pipe is inserted into the assembling hole in the supporting plate and then is fixedly connected with the supporting plate, the other end of the silencing pipe is inserted into the large hole in the hole plate and then is fixedly connected with the hole plate, silencing holes penetrating through the pipe wall are formed in the pipe wall surface of the middle of the silencing pipe, and the catalyzing device is located at the downstream of the hole plate and fixed to the inner wall surface of the shell body. The improved diesel engine silencer improves the silencing performance and reduces the emission of harmful gas.

Description

The diesel engine silencer of improvement
Technical field
The utility model relates to a kind of diesel engine silencer of improvement.
Background technique
Silencing apparatus is to stop sound transmission and a kind of device of allowing air-flow to pass through, is the important measures of eliminating air power noise.Silencing apparatus is mounted in the low noise device that falls on the air-flow path of aerodynamic force equipment (as larger equipment of relief opening noise such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system.
A kind of diesel generator silencing apparatus is disclosed in prior art, comprise housing, suction port, relief opening 3, noise elimination dividing plate, honeycomb duct, lancing door and sealing cover, housing is provided with suction port and relief opening, in housing 1, be provided with noise elimination dividing plate, between noise elimination dividing plate, be fixed with honeycomb duct, housing one side is provided with lancing door, and lancing door is provided with sealing cover.The advantage of this silencing apparatus is that structure is comparatively simple.But carry out body for silencing apparatus, its major function is to eliminate noise and exhausting air, and the silencing apparatus of said structure, in cavity, be provided with a plurality of dividing plates, and being axially not located on the same line of each honeycomb duct, for air-flow, noise elimination dividing plate has played to air-flow the effect hindering, therefore, reduced the performance of silencing apparatus.
Summary of the invention
For above-mentioned technical problem, main purpose of the present utility model is to provide a kind of diesel engine silencer of eliminating the noise and reducing the improvement of noxious gas emission that improves.
The technological scheme solving the problems of the technologies described above is as follows:
The diesel engine silencer of improvement, comprise housing, one end of housing is provided with suction tude, the other end of housing is provided with steam outlet pipe, in housing, be provided with dunnage, orifice plate, hush tube and catalyst converter, dunnage and orifice plate along the axially spaced-apart of housing arrange and fixing with shell inner surface after, housing and dunnage and orifice plate surround an expansion chamber, dunnage is provided with pilot hole, orifice plate is provided with macropore and aperture, one end of hush tube is fixedly connected with dunnage after being inserted in the pilot hole in dunnage, the other end of hush tube is fixedly connected with orifice plate after being inserted in the macropore on orifice plate, the tube wall face at the middle part of hush tube is provided with the sound attenuation hole that runs through tube wall, described catalyst converter is positioned at the downstream of orifice plate, catalyst converter is fixed on the internal face of housing.
Adopted such scheme, when waste gas is from suction port enters housing, iris action due to dunnage, waste gas can only flow in hush tube, under the effect of the sound attenuation hole of hush tube, waste gas Aerodynamic Noise of A is discharged, reduce Aerodynamic Noise of A, part waste gas is after sound attenuation hole flows out to expansion chamber, waste gas flow to the downstream of orifice plate by the little aperture of orifice plate, another part waste gas flows out from the port of hush tube, equally also flow to the downstream of orifice plate, because catalyst converter is positioned at the downstream of orifice plate, therefore, waste gas and catalyst converter through noise reduction carry out chemical reaction, harmful gas conversion contained in waste gas is become to innocuous gas, avoid contaminated air.
Further, the two ends of described hush tube are horn mouth.The hush tube of this shape is not only convenient to receive waste gas, and is convenient to combustion gas, makes mobile smooth and easy in hush tube of waste gas, and the object that reaches noise elimination noise reduction.
Further, described catalyst converter comprises tubular carrier, support and the catalyzer that is coated in tubular carrier internal surface and outer surface, and tubular carrier is fixedly connected with support, and support is fixedly connected with the internal face of housing.Existence due to catalyst converter, between waste gas and catalyst converter, carry out chemical reaction, by catalyzer, answer the harmful matters such as NO in waste gas to change NO2 harmless object into, and because catalyst converter has comprised tubular carrier, tubular carrier has all applied catalyzer at inner and outer surface like this, tubular carrier is owing to having the Nei Biaobiao of outer surface and endoporus, to waste gas streams pass through not produce inhibition, and its surface area is large, more abundant with reacting of waste gas.
Further, the tube wall face of described tubular carrier is provided with a plurality of air holes that run through this tubular carrier tube wall.When the endoporus of waste gas at tubular carrier, and during the Clearance Flow between tubular carrier and housing, solid element due to pressure difference, gas mobile in endoporus can enter between tubular carrier and housing by air hole, make so the inside and outside air balance of tubular carrier, be beneficial to fast gas is discharged.
Further, also comprise that is looped around a catalyst converter guide shell around, guide shell is fixed on the internal face of housing, and the through hole on this guide shell is the taper hole that aperture, one end internal diameter is greater than the other end aperture internal diameter, and the large aperture end of guide shell is towards described orifice plate.When air-flow is flowed out from orifice plate, due to the endoporus through hole of a part of gas from tubular carrier, part gas passes through from the gap between tubular carrier and housing, under the effect of guide shell, the flow direction of the waste gas streams that passes through from the gap between tubular carrier and housing is changed, the outer wall along tubular carrier flows, and such object is in order to allow waste gas and catalyzer can carry out better more fully chemical reaction, reduces the discharge of harmful gas.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
1 is housing, and 2 is suction tude, and 3 is steam outlet pipe, and 4 is dunnage, and 5 is orifice plate, and 51 is aperture, and 6 is hush tube, and 61 is sound attenuation hole, and 7 is catalyst converter, and 71 is tubular carrier, and 72 is support, and 73 is catalyzer, and 74 is air hole, and 8 is expansion chamber, and 9 is guide shell.
Embodiment
With reference to Fig. 1, the diesel engine silencer of improvement of the present utility model,
Comprise housing 1, one end of housing 1 is provided with suction tude 2, and the other end of housing 1 is provided with steam outlet pipe 3.In housing, be provided with dunnage 4, orifice plate 5, hush tube 6 and catalyst converter 7.Dunnage 4 and orifice plate 5 along the axially spaced-apart of housing 1 arrange and fixing with shell inner surface after, housing 1 surrounds an expansion chamber 8 with dunnage 4 and orifice plate 5.Dunnage 4 is provided with pilot hole, and orifice plate 5 is provided with macropore and aperture 51, and one end of hush tube 6 is fixedly connected with dunnage 4 after being inserted in the pilot hole in dunnage 4, and the other end of hush tube 6 is fixedly connected with orifice plate 5 after being inserted in the macropore on orifice plate 5.The tube wall face at the middle part of hush tube 6 is provided with the sound attenuation hole 61 that runs through tube wall, and the two ends of described hush tube are horn mouth.Described catalyst converter 7 is positioned at the downstream of orifice plate, and catalyst converter 7 is fixed on the internal face of housing 1.Described catalyst converter 7 comprises tubular carrier 71, support 72 and the catalyzer 73 that is coated in tubular carrier internal surface and outer surface, and the tube wall face of described tubular carrier 71 is provided with a plurality of air holes 74 that run through this tubular carrier tube wall.Tubular carrier 71 is fixedly connected with support 72, and support 72 is fixedly connected with the internal face of housing 1.Also comprise that is looped around a catalyst converter guide shell 9 around, guide shell 9 is fixed on the internal face of housing, and the through hole on this guide shell is the taper hole that aperture, one end internal diameter is greater than the other end aperture internal diameter, and the large aperture end of guide shell is towards described orifice plate 5.

Claims (5)

1. the diesel engine silencer of improveing, comprise housing, one end of housing is provided with suction tude, the other end of housing is provided with steam outlet pipe, it is characterized in that: in housing, be provided with dunnage, orifice plate, hush tube and catalyst converter, dunnage and orifice plate along the axially spaced-apart of housing arrange and fixing with shell inner surface after, housing and dunnage and orifice plate surround an expansion chamber, dunnage is provided with pilot hole, orifice plate is provided with macropore and aperture, one end of hush tube is fixedly connected with dunnage after being inserted in the pilot hole in dunnage, the other end of hush tube is fixedly connected with orifice plate after being inserted in the macropore on orifice plate, the tube wall face at the middle part of hush tube is provided with the sound attenuation hole that runs through tube wall, described catalyst converter is positioned at the downstream of orifice plate, catalyst converter is fixed on the internal face of housing.
2. the diesel engine silencer of improvement according to claim 1, is characterized in that: the two ends of described hush tube are horn mouth.
3. the diesel engine silencer of improvement according to claim 1, it is characterized in that: described catalyst converter comprises tubular carrier, support and the catalyzer that is coated in tubular carrier internal surface and outer surface, tubular carrier is fixedly connected with support, and support is fixedly connected with the internal face of housing.
4. the diesel engine silencer of improvement according to claim 3, is characterized in that: the tube wall face of described tubular carrier is provided with a plurality of air holes that run through this tubular carrier tube wall.
5. the diesel engine silencer of improvement according to claim 3, it is characterized in that: also comprise that is looped around a catalyst converter guide shell around, guide shell is fixed on the internal face of housing, through hole on this guide shell is the taper hole that aperture, one end internal diameter is greater than the other end aperture internal diameter, and the large aperture end of guide shell is towards described orifice plate.
CN201320524691.6U 2013-08-27 2013-08-27 Improved diesel engine silencer Expired - Fee Related CN203532004U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320524691.6U CN203532004U (en) 2013-08-27 2013-08-27 Improved diesel engine silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320524691.6U CN203532004U (en) 2013-08-27 2013-08-27 Improved diesel engine silencer

Publications (1)

Publication Number Publication Date
CN203532004U true CN203532004U (en) 2014-04-09

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Family Applications (1)

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CN201320524691.6U Expired - Fee Related CN203532004U (en) 2013-08-27 2013-08-27 Improved diesel engine silencer

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CN (1) CN203532004U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108429386A (en) * 2018-03-30 2018-08-21 杭州新尚科技咨询有限公司 A kind of diesel-driven generator of excellent noise reduction effect
CN111637622A (en) * 2020-06-09 2020-09-08 苏州逸新和电子有限公司 Silencer for air conditioning system
CN112984265A (en) * 2021-03-16 2021-06-18 南京曼式声学技术有限公司 Sectional type resistive ventilation silencer and assembly method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108429386A (en) * 2018-03-30 2018-08-21 杭州新尚科技咨询有限公司 A kind of diesel-driven generator of excellent noise reduction effect
CN111637622A (en) * 2020-06-09 2020-09-08 苏州逸新和电子有限公司 Silencer for air conditioning system
CN112984265A (en) * 2021-03-16 2021-06-18 南京曼式声学技术有限公司 Sectional type resistive ventilation silencer and assembly method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140409

Termination date: 20150827

EXPY Termination of patent right or utility model