CN108001478A - A kind of composite muffler for the exhaust of hump yard car retarder clack box - Google Patents
A kind of composite muffler for the exhaust of hump yard car retarder clack box Download PDFInfo
- Publication number
- CN108001478A CN108001478A CN201711394958.3A CN201711394958A CN108001478A CN 108001478 A CN108001478 A CN 108001478A CN 201711394958 A CN201711394958 A CN 201711394958A CN 108001478 A CN108001478 A CN 108001478A
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- CN
- China
- Prior art keywords
- muffling unit
- aperture
- muffling
- outer layer
- clack box
- 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
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 230000006837 decompression Effects 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 24
- 239000006260 foam Substances 0.000 claims description 23
- 239000011358 absorbing material Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000004630 mental health Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000003584 silencer Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/02—Track brakes or retarding apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K13/00—Other auxiliaries or accessories for railways
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
Abstract
The invention discloses a kind of composite muffler for the exhaust of hump yard car retarder clack box, mainly include：Outer layer muffling unit, middle level muffling unit and aperture muffling unit；Wherein：The aperture muffling unit includes the two-stage muffling unit being set in together, and the muffling unit of inner side couples with the exhaust outlet of clack box；The middle level muffling unit is sleeved between aperture muffling unit and outer layer muffling unit, and the outer layer muffling unit, middle level muffling unit and aperture muffling unit after suit keep concentric, and the outer layer muffling unit is installed on ground base.The composite muffler can solve to control the emptying noise of clack box during the action of rolling stock retarder, protect the living environment of hump yard nearby residents and the physical and mental health of worker.
Description
Technical field
The present invention relates to the technical field of energy saving and environmental protection in hump marshalling station switchyard, more particularly to one kind to be used for hump yard
The composite muffler of car retarder clack box exhaust.
Background technology
Most domestic hump yard is mounted with the car retarder using source of the gas as power source.Moved in car retarder
During work, the larger emptying noise of sound pressure level is produced, seriously affected the operating environment and nearby residents in hump yard
Living environment, is one of main noise source in hump yard.
Problem of noise pollution perplexs Hump at marshalling stations switchyard always, is produced particularly in switchyard during car retarder action
The emptying noise of raw brake oil and clack box, is the Main Noise Sources in Hump at marshalling stations switchyard.At present, for vehicle deceleration
The brake oil of device, the solution of existing reality, and for car retarder clack box emptying noise problem, domestic relevant neck
Domain does not carry out correlative study also.
The method that gas emptying noise generally uses silencer is solved, the species of in the market silencer is various, according to noise
Spectral characteristic can select dissipative muffler, reactive muffler, impedance composite muffler, microperforated panel silencer, spray
Dissipative muffler etc..However, in order to ensure control accuracy of the car retarder to skating vehicle, for the dynamic of car retarder
There are strict requirements as the time.Moreover, the clack box of car retarder is outdoor equipment, use environment dust is more, weather humidity
Contain lubricating oil in changeable and discharge gas, select that the universal silencer of in the market can not meet that car retarder uses will
Ask.
The content of the invention
The object of the present invention is to provide a kind of composite muffler for the exhaust of hump yard car retarder clack box, energy
It is effectively reduced the emptying noise of car retarder control clack box.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of composite muffler for the exhaust of hump yard car retarder clack box, including：Outer layer muffling unit, in
Layer muffling unit and aperture muffling unit；Wherein：The aperture muffling unit includes the two-stage muffling unit being set in together,
The muffling unit of inner side couples with the exhaust outlet of clack box；The middle level muffling unit is sleeved on aperture muffling unit and outer layer is eliminated the noise
Between unit, outer layer muffling unit, middle level muffling unit and aperture muffling unit after suit keep concentric, described outer
Layer muffling unit is installed on ground base.
The outer layer muffling unit includes：Outer barrel housing, the end cap at outer barrel housing both ends and outer layer muffling unit stent；
The outer barrel housing is rolled into tubular by certain thickness steel plate or stainless steel plate, and both ends are equipped with end cap and are welded with cooperation
The end cap coupling ring of fixed end cap；The inner wall sticking sound-absorbing material or sound insulating material of end cap and outer barrel housing；
Whole outer layer muffling unit is fixed on ground base by outer layer muffling unit stent.
The bottom of the outer barrel housing has opened up exhaust outlet, and coordinates and be equipped with rain-proof dust-proof plate.
The middle level muffling unit includes：Middle level muffling unit end cap and foam metal；The foam metal is processed into circle
Tubular, is fixed on the muffling unit end cap of middle level by glass cement or silica gel, makes foam metal and outer layer muffling unit and aperture
There are certain gap between muffling unit.
Cylindric foam metal is through hole type, and wall thickness is 5mm~20mm.
The aperture muffling unit includes：Level-one micropore jet muffling unit and two level aperture decompression muffling unit；
The two level aperture decompression muffling unit is welded by decompression tube and attachment bolt, and attachment bolt is vented with clack box
Mouth connection；A certain size multiple through holes are machined with decompression tube, through hole is radial and axial uniformly distributed along decompression tube, adjacent in axial direction
Aperture dislocation processing, into plum blossom hole；Pitch-row between adjacent through-holes is not less than 2 times of through-hole diameter；
Level-one micropore jet muffling unit shape is cylindrical shape, is sleeved on the outside of two level decompression muffling unit, both ends are all set
There is end cap；A certain size multiple through holes are machined with cylinder；Through hole is radial and axial uniformly distributed along cylinder, adjacent apertures in axial direction
Dislocation processing, into plum blossom hole；Pitch-row between adjacent through-holes is not less than 4 times of through-hole diameter.
The aperture gross area on decompression tube is not less than the area of 1.5 times of clack box exhaust pipe mouths；Level-one micropore jet is eliminated the noise single
The aperture gross area on not less than 1.5 times decompression tubes of first aperture gross area.
Cylindric foam metal in the muffling unit of middle level slots or does not slot；If fluting, the gross area is not less than 1.5
The level-one micropore jet muffling unit aperture gross area again；
The outer barrel housing base bleed open area of outer layer muffling unit is small not less than 3 times of level-one micropore jet muffling unit
The hole gross area.
As seen from the above technical solution provided by the invention, the three parts of composite muffler are eliminated the noise single by outer layer
First end cap is combined, and facilitates silencer disassembly, cleaning and replacement；Meanwhile aperture muffling unit includes two be set in together
Level muffling unit, it is possible to achieve decompression is eliminated the noise and noise frequency displacement, makes exhaust noise move to the high band that human ear is not heard；In middle level
Gap is formed between the foam metal and outer layer muffling unit of muffling unit, further absorbs level-one micropore jet muffling unit
High-frequency noise；Sound insulation or sound-absorbing material are pasted on the inside of outer layer muffling unit cylinder, makes composite muffler noise reduction further
Improve.The composite muffler has the principle that aperture is eliminated the noise with resistance noise reduction concurrently at the same time, and noise reduction is relatively good.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of compound noise elimination for the exhaust of hump yard car retarder clack box provided in an embodiment of the present invention
The schematic diagram of device；
Fig. 2 is the schematic diagram of outer layer muffling unit provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of middle level muffling unit provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of aperture muffling unit provided in an embodiment of the present invention.
Embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to protection scope of the present invention.
As shown in Figure 1, it is a kind of compound disappearing for the exhaust of hump yard car retarder clack box provided by the invention
The top view of sound device；It mainly includes：
Outer layer muffling unit 1, middle level muffling unit 2 and aperture muffling unit 3；Wherein：The aperture muffling unit 3 wraps
Containing the two-stage muffling unit being set in together, the muffling unit of inner side couples with the exhaust outlet of clack box；The middle level muffling unit 2
Be sleeved between aperture muffling unit 3 and outer layer muffling unit 1, the outer layer muffling unit 1, middle level muffling unit 2 after suit with
And aperture muffling unit 3 keeps concentric, the outer layer muffling unit 1 is installed on ground base.
Above-mentioned composite muffler can assemble as follows：First, aperture muffling unit 3 is installed to the row of clack box
Gas port；Middle level muffling unit, is attached to the outside of aperture muffling unit 3 for 2 sets by next；Again, in 1 set of outer layer muffling unit being attached to
2 outside of layer muffling unit, adjusts position, protects outer layer muffling unit 1, middle level muffling unit 2,3 three parts of aperture muffling unit
Essentially concentric is held, on fixed outer layer muffling unit 1 to ground base, with bolt composite muffler outer layer muffling unit 1
End cap is fixed.
In the embodiment of the present invention, the outer layer muffling unit 1 includes：Outer barrel housing, the end cap at outer barrel housing both ends and outer
Layer muffling unit stent；The outer barrel housing is rolled into tubular by certain thickness steel plate or stainless steel plate, and both ends are equipped with end cap simultaneously
It is welded with the end cap coupling ring for coordinating fixed end cap；The inner wall sticking sound-absorbing material or sound insulating material of end cap and outer barrel housing；Entirely
Outer layer muffling unit is fixed on ground base by outer layer muffling unit stent.
The middle level muffling unit 2 includes：Middle level muffling unit end cap and foam metal；The foam metal is processed into circle
Tubular, is fixed on the muffling unit end cap of middle level by glass cement or silica gel, makes foam metal and outer layer muffling unit and aperture
There are certain gap between muffling unit.
The aperture muffling unit 3 includes：Level-one micropore jet muffling unit and two level aperture decompression muffling unit；
The two level aperture decompression muffling unit is welded by decompression tube and attachment bolt, and attachment bolt is vented with clack box
Mouth connection；A certain size multiple through holes are machined with decompression tube, through hole is radial and axial uniformly distributed along decompression tube, adjacent in axial direction
Aperture dislocation processing, into plum blossom hole；Pitch-row between adjacent through-holes is not less than 2 times of through-hole diameter；Level-one micropore jet is eliminated the noise single
First shape is cylindrical shape, is sleeved on the outside of two level decompression muffling unit, both ends are designed with end cap；It is machined with cylinder multiple certain
The through hole of size；Through hole is radial and axial uniformly distributed along cylinder, adjacent apertures dislocation processing in axial direction, into plum blossom hole；Adjacent through-holes
Between pitch-row be not less than 4 times of through-hole diameter.
In order to make it easy to understand, 2-4 eliminates the noise outer layer muffling unit 1, middle level muffling unit 2 and aperture below in conjunction with the accompanying drawings
Unit elaborates.
First, outer layer muffling unit.
As shown in Fig. 2, being the schematic diagram of outer layer muffling unit, (a), (b) are respectively top view, side view.101 in Fig. 2
It is end cap sound insulation or sound-absorbing material for the first end cap of outer layer muffling unit, 102,103 be end cap coupling ring, and 104 be outer barrel housing,
105 be the sound insulation of outer barrel inner walls or sound-absorbing material, and 106 be the second end cap of outer layer muffling unit, and 107 and 108 be attachment bolt
And spring washer, 109 be rain-proof dust-proof plate, and 110 be outer layer muffling unit stent.
In the embodiment of the present invention, the outer barrel housing 104 by certain thickness (for example, 1mm~5mm is thick) steel plate or stainless
Steel plate is rolled into tubular, and both ends are equipped with end cap (101,106) and are welded with the end cap coupling ring 103 for coordinating fixed end cap；End cap with it is outer
The inner wall sticking sound-absorbing material or sound insulating material (102,105) of cylinder shell；Whole outer layer muffling unit passes through outer layer muffling unit
Stent 110 is fixed on ground base.
In the embodiment of the present invention, sound-absorbing material or sound insulating material are generally stainless steel metal cotton or woven wire or wire
Suede or cellular glass cotton or the material such as foam metal pipe or sound-insulating felt or polyester fiber.
In order to make clack box smooth in exhaust, the bottom of the outer barrel housing 104 has opened up exhaust outlet, and rainwater enters in order to prevent
On the inside of to composite muffler, the bottom of outer barrel housing 104, which coordinates, is equipped with rain-proof dust-proof plate 109.
2nd, middle level muffling unit.
As shown in figure 3, being the schematic diagram of middle level muffling unit, 201 be middle level muffling unit end cap in Fig. 3, and 202 be through hole
Type foam metal.The foam metal is processed into cylindrical shape, and cylindric foam metal is through hole type, wall thickness can be 5mm~
20mm, is fixed on the muffling unit end cap of middle level by glass cement or silica gel, makes foam metal and outer layer muffling unit and aperture
There are certain gap between muffling unit.
Pass through the middle level muffling unit end cap 201 in Fig. 3, it is ensured that the sound insulation or sound absorption of outer layer muffling unit in Fig. 2
The gap between middle level muffling unit foam metal 202 in material 105 and Fig. 3, it is exemplary, clearance distance for 10mm~
100mm.It can further improve noise reduction through this structure.
3rd, aperture muffling unit.
As shown in figure 4, being the schematic diagram of aperture muffling unit, 301 be attachment bolt in Fig. 4, and 302 are depressured for two level aperture
Muffling unit, 303 be the first end cap of aperture muffling unit, and 304 be end cap gusset piece, and 305 be level-one micropore jet muffling unit,
306 be oil-resistant rubber insert, and 307 be the second end cap of aperture muffling unit, and 308 and 309 be attachment bolt and spring washer.
In Fig. 4, attachment bolt 301 couples with the exhaust outlet of clack box, and two level aperture decompression muffling unit 302 is multiple to process
A certain size is (for example, a diameter of) through hole decompression tube, number of openings determined by the area of clack box exhaust pipe mouth
It is fixed；For example, the aperture gross area on decompression tube is not less than the area of 1.5 times of clack box exhaust pipe mouths.
In Fig. 4, level-one micropore jet muffling unit shape is cylindrical shape, be machined with cylinder it is multiple a certain size (for example,
It is a diameter of) through hole, number of openings by two level aperture decompression muffling unit 302 the gross area determine；Example
Such as, the aperture gross area on not less than 1.5 times decompression tubes of the level-one micropore jet muffling unit aperture gross area.
In Fig. 4, the first end cap of aperture muffling unit 303 and end cap gusset piece 304 are welded on decompression tube, the spray of level-one aperture
Note muffling unit 305 is sleeved on the outside of decompression tube, coordinates aperture muffling unit the second end cap 307 level-one aperture with bolt 308
Spray muffling unit 305 encapsulates.
In Fig. 4, as long as removing the bolt 308 and spring washer 309 of the second end cap of aperture muffling unit 307, it is small level-one can be torn open
Hole spray muffling unit 305, it is convenient to clean level-one micropore jet muffling unit and two level aperture decompression muffling unit.
In the embodiment of the present invention, the cylindric foam metal in the muffling unit of middle level can slot or not slot；It is preferred that
, it is contemplated that hump vehicle speed reducer onsite application environment is more severe, and dust is more, and humidity is changeable, and also lubricating oil part,
Using exhaust outlet is easily blocked after a period of time, so as to influence the actuation time of car retarder.Therefore, cylindric foam metal
On be provided with groove, the gross area of the gross area of groove not less than the level-one micropore jet muffling unit 305 in 1.5 times of Fig. 4；It is exemplary
, 3~8 grooves can be provided with cylinder, width is 3mm~10mm, and length is 250mm~500mm.
Meanwhile level-one aperture of the outer barrel housing base bleed open area not less than 3 times of outer layer muffling unit is also required to spray
Note the muffling unit aperture gross area.
In addition, composite muffler is designed as, dismounting and change is easy, as long as removing the end cap spiral shell of outer layer muffling unit in Fig. 2
Bolt 107 and 108, it is possible to be convenient for changing middle level muffling unit.
The principle of the noise elimination noise reduction of said structure is as follows：First, it is right in the case where two level aperture decompression muffling unit 302 acts on
Clack box exhaust outlet is depressured, and is carried out at the same time auxiliary and is eliminated the noise；Then moved under the effect of level-one micropore jet muffling unit 305
Frequently, the noise of sensitive frequency range is moved into the high band that human ear do not hear, so as to further reduce exhaust noise；Middle level in Fig. 3
Gap is formed between outer layer muffling unit outer barrel housing 104 in the foam metal and Fig. 2 of muffling unit, is further absorbed in Fig. 4
Level-one micropore jet muffling unit 305 high band noise, by the sound absorption in Fig. 2 or sound insulating material 105, can make compound
Silencer noise reduction reaches the requirement of design.
Composite muffler provided in an embodiment of the present invention can be conveniently installed on the control clack box of existing car retarder,
Silencer disassembly, cleaning are convenient；Noise elimination effect solves to control the row of clack box during the action of rolling stock retarder more than 20 decibels
Empty noise, protects the living environment of hump yard nearby residents and the physical and mental health of worker.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (8)
- A kind of 1. composite muffler for the exhaust of hump yard car retarder clack box, it is characterised in that including：Outer layer disappears Sound unit, middle level muffling unit and aperture muffling unit；Wherein：The aperture muffling unit includes the two-stage being set in together Muffling unit, the muffling unit of inner side couple with the exhaust outlet of clack box；The middle level muffling unit is sleeved on aperture muffling unit Between outer layer muffling unit, outer layer muffling unit, middle level muffling unit and aperture muffling unit after suit keep concentric State, the outer layer muffling unit are installed on ground base.
- 2. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 1, its It is characterized in that, the outer layer muffling unit includes：Outer barrel housing, the end cap at outer barrel housing both ends and outer layer muffling unit stent；The outer barrel housing is rolled into tubular by certain thickness steel plate or stainless steel plate, and both ends are equipped with end cap and are welded with cooperation and fix The end cap coupling ring of end cap；The inner wall sticking sound-absorbing material or sound insulating material of end cap and outer barrel housing；Whole outer layer muffling unit is fixed on ground base by outer layer muffling unit stent.
- 3. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 2, its It is characterized in that, the bottom of the outer barrel housing has opened up exhaust outlet, and coordinates and be equipped with rain-proof dust-proof plate.
- 4. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 1, its It is characterized in that, the middle level muffling unit includes：Middle level muffling unit end cap and foam metal；The foam metal is processed into circle Tubular, is fixed on the muffling unit end cap of middle level by glass cement or silica gel, makes foam metal and outer layer muffling unit and aperture There are certain gap between muffling unit.
- 5. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 4, its It is characterized in that, cylindric foam metal is through hole type, and wall thickness is 5mm~20mm.
- 6. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 1, its It is characterized in that, the aperture muffling unit includes：Level-one micropore jet muffling unit and two level aperture decompression muffling unit；The two level aperture decompression muffling unit is welded by decompression tube and attachment bolt, and attachment bolt connects with clack box exhaust outlet Connect；A certain size multiple through holes are machined with decompression tube, through hole is radial and axial uniformly distributed along decompression tube, adjacent apertures in axial direction Dislocation processing, into plum blossom hole；Pitch-row between adjacent through-holes is not less than 2 times of through-hole diameter；Level-one micropore jet muffling unit shape is cylindrical shape, is sleeved on the outside of two level decompression muffling unit, both ends are designed with holding Lid；A certain size multiple through holes are machined with cylinder；Through hole is radial and axial uniformly distributed along cylinder, and adjacent apertures misplace in axial direction Processing, into plum blossom hole；Pitch-row between adjacent through-holes is not less than 4 times of through-hole diameter.
- 7. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 6, its It is characterized in that,The aperture gross area on decompression tube is not less than the area of 1.5 times of clack box exhaust pipe mouths；Level-one micropore jet muffling unit is small The aperture gross area on not less than 1.5 times decompression tubes of the hole gross area.
- 8. a kind of composite muffler for the exhaust of hump yard car retarder clack box according to claim 6, its It is characterized in that,Cylindric foam metal in the muffling unit of middle level slots or does not slot；If fluting, the gross area is not less than 1.5 times The level-one micropore jet muffling unit aperture gross area；The outer barrel housing base bleed open area of outer layer muffling unit is total not less than 3 times of level-one micropore jet muffling unit aperture Area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394958.3A CN108001478A (en) | 2017-12-21 | 2017-12-21 | A kind of composite muffler for the exhaust of hump yard car retarder clack box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394958.3A CN108001478A (en) | 2017-12-21 | 2017-12-21 | A kind of composite muffler for the exhaust of hump yard car retarder clack box |
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|---|---|
| CN108001478A true CN108001478A (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711394958.3A Pending CN108001478A (en) | 2017-12-21 | 2017-12-21 | A kind of composite muffler for the exhaust of hump yard car retarder clack box |
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2017
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| JP2005036722A (en) * | 2003-07-15 | 2005-02-10 | Daiwa:Kk | Muffler device for vehicle, and its manufacturing method |
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| CN201522846U (en) * | 2009-05-25 | 2010-07-07 | 无锡世一电力机械设备有限公司 | Combined exhaust air and steam muffler |
| CN201749667U (en) * | 2010-03-23 | 2011-02-16 | 北京静安天成噪声控制技术责任有限公司 | Beam-cavity resonant silencer |
| CN204288796U (en) * | 2014-11-28 | 2015-04-22 | 浙江善时生物药械(商丘)有限公司 | The device of effective reduction PSA oxygenerator emptying noise |
| CN204941646U (en) * | 2015-09-02 | 2016-01-06 | 北京华旭佳音环保科技有限责任公司 | A kind of combined type Gas Exhausting Muffle |
| CN206021899U (en) * | 2016-08-30 | 2017-03-15 | 杭州聚科空分设备制造有限公司 | A kind of acoustic filter of the equipment of making nitrogen |
| CN207725418U (en) * | 2017-12-21 | 2018-08-14 | 中国铁路总公司 | A kind of composite muffler for the exhaust of hump yard car retarder clack box |
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