CN105508012A - Inlaid exhaust sound attenuation device used for coal mine underground vehicle - Google Patents
Inlaid exhaust sound attenuation device used for coal mine underground vehicle Download PDFInfo
- Publication number
- CN105508012A CN105508012A CN201510996437.XA CN201510996437A CN105508012A CN 105508012 A CN105508012 A CN 105508012A CN 201510996437 A CN201510996437 A CN 201510996437A CN 105508012 A CN105508012 A CN 105508012A
- Authority
- CN
- China
- Prior art keywords
- sound attenuation
- exhaust
- barrel
- gas intake
- gas
- 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.)
- Pending
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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
- F01N13/14—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 thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
-
- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
Abstract
The invention belongs to the technical field of sound attenuation devices and provides an inlaid exhaust sound attenuation device used for a coal mine underground vehicle, aiming at solving the technical problem that exhaust noise is high because a kinetic energy value is high when gas in an exhaust system enters a waste gas treatment box. The device comprises a gas intake sound attenuation barrel, an exhaust sound attenuation barrel, a shell and counter flanges, wherein a plurality of small holes are formed in the walls of the gas intake sound attenuation barrel and the exhaust sound attenuation barrel; the exhaust end of the gas intake sound attenuation barrel is sleeved into the gas intake end of the exhaust sound attenuation barrel, the shell sleeves outside the gas intake sound attenuation barrel and the exhaust sound attenuation barrel; a cavity is formed between the exhaust sound attenuation barrel and the shell, the gas intake end of the gas intake sound attenuation barrel and the gas outlet end of the exhaust sound attenuation barrel are respectively provided with counter flanges; the gas intake end of the gas intake sound attenuation barrel and the gas outlet end of the exhaust sound attenuation barrel are respectively in butt joint with gas intake and exhaust holes of the counter flanges; and two ends of the shell are respectively in butt joint with the counter flanges. The device disclosed by the invention is simple in structure, easy to machine, and high in sound attenuation efficiency, can meet underground safe production requirements, and can reduce noise pollution during running of the vehicle.
Description
Technical field
The invention belongs to silencer technical field, be specifically related to the automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine.
Background technique
Underground trackless assists rubber tire to transport compared with traditional rail transport, and the feature such as large with its ramp angle, conveying efficiency is high, cost of transportation is low progressively obtains and promotes the use in the newly-built big-and-middle-sized colliery of China.
Underground trackless assistant conveyance vehicle mainly adopts diesel engine as power, carries out technological processing for explosion protection feature to vent systems, and exhaust flow path is: motor → exhaust elbow → bellows → waste gas treatment tank.In actual production, because exhaust pressure is large, when gas enters waste gas treatment tank, kinetic energy values is high, causes exhaust noise larger.
Summary of the invention
The present invention be the gas solved in vent systems when entering waste gas treatment tank kinetic energy values high, cause the technical problem that exhaust noise is larger, provide the automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine.
The technical solution used in the present invention is as follows:
The automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine, comprise air inlet hush pipe, exhaust noise silencing cylinder, housing and abutted flange, the bucket wall of air inlet hush pipe and exhaust noise silencing cylinder is provided with some apertures, the exhaust end of air inlet hush pipe is inserted in the inlet end of exhaust noise silencing cylinder, air inlet hush pipe and exhaust noise silencing cylinder overcoat have housing, a cavity is formed between exhaust noise silencing cylinder and the internal surface of housing, the inlet end of air inlet hush pipe and the outlet side of exhaust noise silencing cylinder are respectively arranged with abutted flange, the inlet end of air inlet hush pipe and the outlet side of exhaust noise silencing cylinder connect with the port of abutted flange respectively, the two ends of housing connect with abutted flange respectively.
Be provided with water in described housing, the two ends of housing connect with the water hole of abutted flange respectively.
Abutted flange is outside equipped with O RunddichtringO, and O RunddichtringO and abutted flange are bolted.
Beneficial effect of the present invention:
1. structure of the present invention is simple, and be easy to processing, elimination efficiency is high, meets downhole safety production requirement, reduces the noise pollution in vehicle operating.
2. in inventive shell, water is set, the effect that cooling is explosion-proof can be played, O RunddichtringO is set outside abutted flange and can prevents the water in housing from leaking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is noise reduction schematic diagram of the present invention;
Fig. 3 is the plan view of abutted flange;
In figure: 1-air inlet hush pipe, 2-exhaust noise silencing cylinder, 3-housing, 4-abutted flange, 5-O RunddichtringO, 6-bolt, 7-port, 8-water hole.
Embodiment
As Fig. 1, shown in 3, the automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine, comprise air inlet hush pipe 1, exhaust noise silencing cylinder 2, housing 3 and abutted flange 4, the bucket wall of air inlet hush pipe 1 and exhaust noise silencing cylinder 2 is provided with some apertures, the exhaust end of air inlet hush pipe 1 is inserted in the inlet end of exhaust noise silencing cylinder 2, air inlet hush pipe 1 and exhaust noise silencing cylinder 2 overcoat have housing 3, a cavity is formed between the internal surface of exhaust noise silencing cylinder 2 and housing 3, the inlet end of air inlet hush pipe 1 and the outlet side of exhaust noise silencing cylinder 2 are respectively arranged with abutted flange 4, the inlet end of air inlet hush pipe 1 and the outlet side of exhaust noise silencing cylinder 2 connect with the port 7 of abutted flange 4 respectively, the two ends of housing 3 connect with abutted flange 4 respectively.
Be provided with water in described housing 3, the two ends of housing 3 connect with the water hole 8 of abutted flange 4 respectively.The temperature of exhaust gas produced in diesel engine operation process reaches 300 ~ 400 °, exhaust pipe wall temperature increases, because coal mine downhole safety needs, tube wall temperature must be down to less than 70 °, and in housing, be provided with water, use water as cooling medium, can exhaust pipe path temperature be effectively reduced.For preventing the water in housing from leaking, abutted flange 4 is outside equipped with O RunddichtringO 5, O RunddichtringO 5 and is fixed by bolt 6 with abutted flange 4.
Structure of mosaic aperture silencer structure of the present invention is simple, and conserve space, simplified manufacturing technique, can effectively reduce Exhaust Gas noise.Noise reduction principle of the present invention as shown in Figure 2, gas enters the aperture after air inlet hush pipe 1 on barrel, under the effect of the pressure through air inlet hush pipe 1, enter exhaust noise silencing cylinder 2, major part gas through exhaust noise silencing cylinder 2, then returns exhaust noise silencing cylinder 2 through aperture again under pressure and discharges under pressure and effect of inertia.
The present invention can measure motor according to difference and exhaust arrangement selects the parameters such as different apertures, porosity ratio, the hole degree of depth.Acoustic absorptivity can be improved in little aperture, and low porosity ratio can increase the width of sound sucting band, and the orifice plate degree of depth can change the position at resonance sound-absorbing peak.Possess the advantages such as design is tight, absorption band is wide, resistance damage is little, high temperature resistant, the life-span is long.
This structure of mosaic aperture silencer structure of the present invention is simple, and be easy to processing, elimination efficiency is high, meets downhole safety production requirement, reduces the noise pollution in vehicle operating.
Claims (3)
1. the automobile-used structure of mosaic exhaust muffling device of underground coal mine, it is characterized in that: comprise air inlet hush pipe (1), exhaust noise silencing cylinder (2), housing (3) and abutted flange (4), the bucket wall of air inlet hush pipe (1) and exhaust noise silencing cylinder (2) is provided with some apertures, the exhaust end of air inlet hush pipe (1) is inserted in the inlet end of exhaust noise silencing cylinder (2), air inlet hush pipe (1) and exhaust noise silencing cylinder (2) overcoat have housing (3), a cavity is formed between the internal surface of exhaust noise silencing cylinder (2) and housing (3), the inlet end of air inlet hush pipe (1) and the outlet side of exhaust noise silencing cylinder (2) are respectively arranged with abutted flange (4), the inlet end of air inlet hush pipe (1) and the outlet side of exhaust noise silencing cylinder (2) connect with the port (7) of abutted flange (4) respectively, the two ends of housing (3) connect with abutted flange (4) respectively.
2. the automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine according to claim 1, is characterized in that: described housing is provided with water in (3), and the two ends of housing (3) connect with the water hole (8) of abutted flange (4) respectively.
3. the automobile-used structure of mosaic exhaust muffling device of a kind of underground coal mine according to claim 2, is characterized in that: abutted flange (4) is outside equipped with O RunddichtringO (5), and O RunddichtringO (5) is fixed by bolt (6) with abutted flange (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996437.XA CN105508012A (en) | 2015-12-28 | 2015-12-28 | Inlaid exhaust sound attenuation device used for coal mine underground vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996437.XA CN105508012A (en) | 2015-12-28 | 2015-12-28 | Inlaid exhaust sound attenuation device used for coal mine underground vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105508012A true CN105508012A (en) | 2016-04-20 |
Family
ID=55716258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510996437.XA Pending CN105508012A (en) | 2015-12-28 | 2015-12-28 | Inlaid exhaust sound attenuation device used for coal mine underground vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508012A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854664A1 (en) * | 1978-12-18 | 1980-09-18 | Leistritz Hans Karl | Heat flow promoting system using heat pipe - consists of exhaust ducting, with pipe coaxial inside inlet, leading to cooler part |
| GB2115870A (en) * | 1982-03-01 | 1983-09-14 | Nelson Ind Inc | Exhaust muffler with protective shield |
| CN2705604Y (en) * | 2003-01-25 | 2005-06-22 | 山东双力集团股份有限公司 | Exhaust muffler |
| CN204476537U (en) * | 2014-12-18 | 2015-07-15 | 重庆博沃发动机配件制造有限公司 | Water-cooled silencing apparatus |
-
2015
- 2015-12-28 CN CN201510996437.XA patent/CN105508012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854664A1 (en) * | 1978-12-18 | 1980-09-18 | Leistritz Hans Karl | Heat flow promoting system using heat pipe - consists of exhaust ducting, with pipe coaxial inside inlet, leading to cooler part |
| GB2115870A (en) * | 1982-03-01 | 1983-09-14 | Nelson Ind Inc | Exhaust muffler with protective shield |
| CN2705604Y (en) * | 2003-01-25 | 2005-06-22 | 山东双力集团股份有限公司 | Exhaust muffler |
| CN204476537U (en) * | 2014-12-18 | 2015-07-15 | 重庆博沃发动机配件制造有限公司 | Water-cooled silencing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |
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| RJ01 | Rejection of invention patent application after publication |