CN208778120U - A kind of Detachable diesel engine air inlet pipeline bend muffler - Google Patents
A kind of Detachable diesel engine air inlet pipeline bend muffler Download PDFInfo
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- CN208778120U CN208778120U CN201821272625.3U CN201821272625U CN208778120U CN 208778120 U CN208778120 U CN 208778120U CN 201821272625 U CN201821272625 U CN 201821272625U CN 208778120 U CN208778120 U CN 208778120U
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- bend muffler
- diesel engine
- air inlet
- sound
- bend
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Abstract
The utility model discloses a kind of Detachable diesel engine air inlet pipeline bend mufflers, adapter tube, end flange, inner sleeve, sound-absorbing material, skin plating, sealing plate, drainage bolt, rivet including bend muffler ontology and its both ends, sealing plate is fixed using rivet in the both ends of bend muffler ontology, sound-absorbing material is filled between inner sleeve and skin plating, drainage bolt is arranged close to end in bend muffler ontology；If, can the ponding of drainage in time in the case where there is ponding.Bend muffler ontology is attached with adapter tube by two end flanges.The utility model is not high to requirements of installation space, compared with the situation for being suitble to marine pipeline installation space compact, can all decay to diesel engine itself induction noise and bend pipe regenerated noise, and can be according to service condition, the resistive material in bend muffler is replaced at any time, guarantees the noise elimination effect of bend muffler.
Description
Technical field
The utility model belongs to pipeline noise elimination technique field more particularly to a kind of Detachable diesel engine air inlet pipeline is eliminated the noise
Elbow.
Background technique
The air inlet pipeline noise of diesel engine is generally relatively high, or even can reach 110dB (A) or more, the inhabitation to ship
And working environment can have a significant impact.Therefore silencer generally can be set in air inlet pipeline straight pipe, to reduce air inlet pipeline
Noise, and then improve crewman inhabitation and working environment.
But the flow velocity of general diesel engine intake pipeline is relatively high, such as certain type ship induction air flow ratio reaches about 16.8m/s, air inlet
Pipeline rises to superstructure from cabin, can more or less arrange several bend pipes, under the charge air flow of high flow rate, pipe bent position stream
Field can unevenly generate regenerated noise, be further exacerbated by the radiated noise of pipeline, and conventional silencer is due to installation site
Difference is difficult to eliminate the regenerated noise of elbow.Therefore bend muffler is set in pipeline pipe bent position, under limited installation space
It can effectively achieve the purpose that reduce pipeline noise, can not only reduce air inlet pipe of diesel engine road noise sound, it can also certain journey
Inhibit the regenerated noise at elbow of pipeline on degree, thus installation bend muffler be reduce one of air inlet pipeline noise it is effective
Method.
Meanwhile the silencer largely installed in general diesel engine intake pipeline is dissipative muffler, and dissipative muffler
Sound deadening capacity influenced by resistive sound-absorbing material it is very big, due under long-time service condition, inevitably having in air inlet pipeline
Dust or aqueous vapor etc. enter in pipeline, this will result in the resistive material gap blocking of silencer or reduces, longer using the time,
Noise elimination effect can decline therewith, and the noise circumstance control on naval vessel cannot be effectively ensured for a long time.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of noise elimination of Detachable diesel engine air inlet pipeline is curved
Head reduces pipeline noise for the control of boat diesel engine pipeline induction noise, and then improves inhabitation and the building ring of ship
Border.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of Detachable diesel engine air inlet
Pipeline bend muffler, adapter tube, end flange, inner sleeve, sound-absorbing material, skin plating including bend muffler ontology and its both ends,
Sealing plate is fixed using rivet in sealing plate, drainage bolt, rivet, the both ends of bend muffler ontology, inner sleeve and skin plating it
Between fill sound-absorbing material, drainage bolt is arranged close to end in bend muffler ontology；If can be put in time in the case where there is ponding
Let out ponding.Bend muffler ontology is attached with adapter tube by two end flanges.
According to the above technical scheme, sound-absorbing material uses thermoformable thermosetting property foamed material, density 5kg/m3, aperture
Rate is higher than 97%.Light-weight, acoustic absorptivity is high.
According to the above technical scheme, the bending angle of bend muffler ontology is 90 °.
According to the above technical scheme, the rivet is self-plugging rivet.
According to the above technical scheme, sound-absorbing material selects melamine foams sound-absorbing material, and surface coats glass wool cloth, coats thickness
For 50mm.
The bend muffler of this paper be designed at both ends it is detachable, can be at any time to resistive material by end cap of dismantling
It is replaced, guarantees the noise elimination effect of bend muffler.
The beneficial effect that the utility model generates is: it is not high to requirements of installation space, relatively it is suitble to marine pipeline installation space
Compact situation can all decay to diesel engine itself induction noise and bend pipe regenerated noise, and can according to service condition,
The resistive material in bend muffler is replaced at any time, guarantees the noise elimination effect of bend muffler, noise elimination effect is in 100Hz~4kHz frequency multiplication
Journey central frequency range, sound deadening capacity can achieve the effect that >=26dB (A).
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the utility model embodiment Detachable diesel engine air inlet pipeline bend muffler sectional side elevation；
Fig. 2 is the axial view at bend muffler end face of flange；
Fig. 3 is the partial enlarged view of bend muffler I direction view；
Fig. 4 is the partial enlarged view of bend muffler II direction view；
Fig. 5 is the bend muffler sound deadening capacity calculated result figure of ship circuit design in the utility model embodiment.
Wherein, 1, end flange；2, it takes over；3, self-plugging rivet；4, inner sleeve；5, sound-absorbing material；6, skin plating；7, it seals
Plate；8, welding base；9, gasket；10, drainage bolt.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
In the utility model embodiment, the diameter Ф of diesel engine intake pipeline is 450mm, and bend muffler ontology both sides respectively connect
One L length is the straight tube of 800mm, and the camber radius R of elbow is 450mm, and resistive sound-absorbing material selects melamine foams to inhale
Sound material, surface coat glass wool cloth, and cladding thickness is about 50mm.Bend muffler ontology material be stainless steel, flange, shell,
Fixed bracket material is stainless steel, and outer casing thickness t=3mm, inner cylinder is the perforated plate of 1mm thickness, 25% punching rate.Melamine foams
Sound-absorbing material is a kind of flexible, high opening rate foamed plastics, has comprehensive light property, sound absorption properties, thermal insulation, Heat-resistant stable
Property, resistance to fungoid, high fire line, hygienic environment-protecting, post-processing, are thermoformable thermosetting property foamed materials, due to having
The above feature, melamine foams sound-absorbing material can be made fixed shape.In as shown in Figure 1, Figure 2, between inner sleeve 4 and skin plating 6
Sound-absorbing material 5 is filled, sound-absorbing material makes into two in 45 degree of bend pipe punishment, by self-plugging rivet 3 of dismantling, unloads bend muffler
Two end sealing plates 7, so that it may easily resistive material be extracted and be returned out dress.Bend muffler ontology and adapter tube 2 can pass through two
A end flange 1 is attached, with fastener and Pipe installing.
By using sound deadening capacity static estimating method, meanwhile, consider sound deadening capacity disturbing factor in practice, such as air-flow is again
Raw noise, the structural noise of tube wall and the influence of other factors, amendment acoustic absorptivity are calculated in conjunction with high frequency failure frequency
Certain type ship diesel engine intake pipeline design bend muffler sound deadening capacity it is as shown in Figure 5.The calculated result of Fig. 5 obtains, and eliminates the noise curved
For head in 100Hz~4kHz octave center frequency range, sound deadening capacity is 27.0dB (A).
The utility model can reduce the induction noise of diesel engine itself, can also reduce the regenerated noise of pipe bent position；It examines
Consider installation space, resistive material coats with a thickness of 50mm, i.e. bend muffler unilateral increase 50mm on air inlet pipe of diesel engine road,
Situation lower to requirements of installation space, compact suitable for diesel engine intake pipeline installation space；Meanwhile by bend muffler both ends
Portion is designed to detachable, can regularly replace to sound-absorbing material, guarantee the noise elimination effect of bend muffler；If curved eliminating the noise
Head have ponding in the case where, be also devised with drainage bolt 10, can at any time drainage ponding as shown in figure 4, by welding base 8, pad
Piece 9 is fixed, and Fig. 3 is the partial enlarged view of bend muffler I direction view.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (5)
1. a kind of Detachable diesel engine air inlet pipeline bend muffler, which is characterized in that including bend muffler ontology and its both ends
Adapter tube, end flange, inner sleeve, sound-absorbing material, skin plating, sealing plate, drainage bolt, rivet, the both ends of bend muffler ontology
Sealing plate is fixed using rivet by portion, sound-absorbing material is filled between inner sleeve and skin plating, bend muffler ontology is close to end
Drainage bolt is set；Bend muffler ontology is attached with adapter tube by two end flanges.
2. Detachable diesel engine air inlet pipeline bend muffler according to claim 1, which is characterized in that sound-absorbing material is adopted
With thermoformable thermosetting property foamed material, density 5kg/m3, percent opening is higher than 97%.
3. Detachable diesel engine air inlet pipeline bend muffler according to claim 1 or 2, which is characterized in that eliminate the noise curved
The bending angle of head ontology is 90 °.
4. Detachable diesel engine air inlet pipeline bend muffler according to claim 1 or 2, which is characterized in that the riveting
Nail is self-plugging rivet.
5. Detachable diesel engine air inlet pipeline bend muffler according to claim 1 or 2, which is characterized in that sound absorption material
Material selects melamine foams sound-absorbing material, and surface coats glass wool cloth, coats with a thickness of 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272625.3U CN208778120U (en) | 2018-08-08 | 2018-08-08 | A kind of Detachable diesel engine air inlet pipeline bend muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272625.3U CN208778120U (en) | 2018-08-08 | 2018-08-08 | A kind of Detachable diesel engine air inlet pipeline bend muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208778120U true CN208778120U (en) | 2019-04-23 |
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ID=66156086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821272625.3U Active CN208778120U (en) | 2018-08-08 | 2018-08-08 | A kind of Detachable diesel engine air inlet pipeline bend muffler |
Country Status (1)
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| CN (1) | CN208778120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982731A (en) * | 2021-10-14 | 2022-01-28 | 中国舰船研究设计中心 | Carbon-removing, dust-removing and noise-eliminating integrated device for marine diesel engine |
-
2018
- 2018-08-08 CN CN201821272625.3U patent/CN208778120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982731A (en) * | 2021-10-14 | 2022-01-28 | 中国舰船研究设计中心 | Carbon-removing, dust-removing and noise-eliminating integrated device for marine diesel engine |
| CN113982731B (en) * | 2021-10-14 | 2024-03-08 | 中国舰船研究设计中心 | Carbon removing, dust removing and silencing integrated device for marine diesel engine |
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