CN109682238A - A kind of ship heat exchanger with noise elimination function - Google Patents
A kind of ship heat exchanger with noise elimination function Download PDFInfo
- Publication number
- CN109682238A CN109682238A CN201811594373.0A CN201811594373A CN109682238A CN 109682238 A CN109682238 A CN 109682238A CN 201811594373 A CN201811594373 A CN 201811594373A CN 109682238 A CN109682238 A CN 109682238A
- Authority
- CN
- China
- Prior art keywords
- shell
- heat exchanger
- central tube
- baffle plate
- tube
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of ship heat exchanger with noise elimination function, comprising: shell, shell both ends are equipped with tube sheet, bobbin carriage are equipped on the outside of tube sheet, pipe side-entrance, pipe side outlet is respectively set on two bobbin carriages；Baffle plate is equipped in shell, shell both ends side wall is equipped with shell-side inlet, shell-side outlet；Through the more heat exchanger tubes for being distributed on baffle plate and both ends and being connected to respectively with two bobbin carriages；Through the central tube of baffle plate, central tube is fixedly connected with baffle plate, is spaced apart on the tube wall of central tube and is equipped with multiple outer sound attenuation holes；The multiple partitions being arranged at intervals on inside central tube offer multiple interior sound attenuation holes on partition, are related to ship exchange piece field.The present invention had not only been able to satisfy the high efficient heat exchanging in heat exchanger between fluid, but also can eliminate flow noise and the pressure fluctuation of part shell fluid, and structure is simple, at low cost, practical.
Description
Technical field
The present invention relates to ship exchange piece fields, are specifically related to a kind of ship heat exchanger with noise elimination function.
Background technique
The pressure fluctuation of fluid and flow noise in heat-exchange system, are one of important sources of ship noise, and influence ship
One of oceangoing ship quietness and the key factor of reliability.Practical operating experiences show the pressure fluctuation of fluid and stream in heat-exchange system
Noise can mainly bring the problem of following three aspects:
(1) flow noise of fluid directly passes through nozzle and passes through excitation pipeline system to external radiation or the pressure fluctuation of fluid
System, causes structural vibration noise to external radiation, seriously affects the quietness of ship；
(2) pipeline vibration noise caused by the flow noise and fluid pressure pulse of heat-exchange system is radiated into ship's space,
Cause airborne noise in cabin exceeded, seriously affects the living environment of staff in ship；
(3) pressure fluctuation of fluid can motivate stress fluctuation and the structural vibration of pipeline wall surface, influence component in system
Work quality and operating accuracy reduce its reliability, will especially when the intrinsic frequency of ripple frequency and pipe-line system is close
Cause pipe-line system to resonate, causes serious consequence.
In order to alleviate the vibration noise of heat-exchange system, sound-absorbing material can be laid outside heat exchange equipment or pipe-line system,
Silencer can be installed in pipe-line system.But sound-absorbing material noise elimination effect ten is laid outside heat exchange equipment or pipe-line system
It is point limited, and silencer is installed in pipe-line system and is primarily present following both sides problem:
(1) a large amount of cabin spaces can be occupied by silencer being installed in pipe-line system, to the arrangement and peace of entire heat-exchange system
Dress brings difficulty；
(2) flow resistance of heat-exchange system can be greatly increased by silencer being installed in pipe-line system, on the one hand will affect system
Efficient low-resistance heat exchange, another party causes heat-exchange system to need to configure more powerful, the higher circulating pump of lift, this will increase again
The vibration of heat-exchange system and noise.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, providing one kind not only can guarantee high efficient heat exchanging, but also
Segment fluid flow pressure fluctuation and the ship heat exchange with noise elimination function of flow noise can be eliminated under the premise of not increasing equipment volume
Device.
The present invention provides a kind of ship heat exchanger with noise elimination function, comprising:
Shell, the shell both ends are equipped with tube sheet, bobbin carriage are equipped on the outside of the tube sheet, pipe side is respectively set on two bobbin carriages
Import, pipe side outlet；Baffle plate is equipped in the shell, shell both ends side wall is equipped with shell-side inlet, shell-side outlet；
Through the more heat exchanger tubes for being distributed on baffle plate and both ends and being connected to respectively with two bobbin carriages；
Through the central tube of baffle plate, the central tube is fixedly connected with the baffle plate, is spaced on the tube wall of central tube
Offer multiple outer sound attenuation holes.
Based on the above technical solution, multiple partitions are also arranged at intervals with inside the central tube, on the partition
Offer multiple interior sound attenuation holes.
Based on the above technical solution, the partition is set at the central tube and baffle plate binding site.
Based on the above technical solution, the baffle plate uses helical baffles, between the two neighboring partition
Away from equal with the screw pitch of helical baffles.
Based on the above technical solution, the central tube is set to the center axial position of baffle plate.
Based on the above technical solution, the outer sound attenuation hole and the interior sound attenuation hole are circular hole, and outer sound attenuation hole
It is equal with the diameter of interior sound attenuation hole.
Based on the above technical solution, the both ends of central tube are individually fixed on the tube sheet.
Based on the above technical solution, the central tube is round tube, axis of the outer sound attenuation hole along the central tube
It is uniformly distributed to circumferential.
Compared with prior art, advantages of the present invention is as follows:
(1) the ship heat exchanger of the invention with noise elimination function is made by multiple outer sound attenuation holes on central tube tube wall
When circulating in the medium runner that is separated to form in shell by baffle plate of shell fluid, the flow noise and Fluid pressure arteries and veins of fluid
It is dynamic to be absorbed and be decayed by outer sound attenuation hole, reduce fluid pressure pulse and the impact and caused tube bundle vibration, raising of tube bank are changed
The security reliability of hot device.
(2) the outer sound attenuation hole of the present invention, partition and interior sound attenuation hole depend on central tube setting, do not increase heat exchanger additionally
Volume, will not the heat exchange property of heat exchanging device affect, the high efficient heat exchanging being not only able to satisfy in heat exchanger between fluid, but also
Part flow noise and fluid pressure pulse can be eliminated, structure is simple, and it is at low cost, it is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the ship heat exchanger with noise elimination function of the embodiment of the present invention；
Fig. 2 is the cross-sectional view of the central tube of the embodiment of the present invention；
Fig. 3 is cross-sectional view at A-A in Fig. 2.
Appended drawing reference: 1-shell, 11-shell-side inlets, 12-shell-side outlets, 2-bobbin carriages, 21-pipe side-entrances, 22-
Pipe side outlet, 3-baffle plates, 4-tube sheets, 5-heat exchanger tubes, 6-central tubes, 61-outer sound attenuation holes, 7-partitions, 71-interior disappear
Acoustic aperture.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Referring to shown in Fig. 1 to Fig. 3, the embodiment of the present invention provides a kind of ship heat exchanger with noise elimination function, comprising:
Shell 1,1 both ends of shell are equipped with tube sheet 4, bobbin carriage 2 are equipped on the outside of the tube sheet 4, is set respectively on two bobbin carriages 2
Set pipe side-entrance 21, pipe side outlet 22；Be equipped with baffle plate 3 in the shell 1,1 both ends side wall of shell be equipped with shell-side inlet 11,
Shell-side outlet 12；
Through the more heat exchanger tubes 5 for being distributed on baffle plate 3 and both ends and being connected to respectively with two bobbin carriages 2；
Through the central tube 6 of baffle plate 3, the central tube 6 is fixedly connected with the baffle plate 3, on the tube wall of central tube 6
It is spaced apart and is equipped with multiple outer sound attenuation holes 61.
Ship heat exchanger with noise elimination function of the invention, by opening up multiple outer sound attenuation holes on the tube wall of central tube 6
61, when so that circulating in the medium runner that shell fluid is separated to form in shell 1 by baffle plate 3, the flow noise and stream of fluid
Body pressure fluctuation can be absorbed and be decayed by the outer sound attenuation hole 61 on 6 tube wall of central tube, reduce fluid pressure pulse and rush to tube bank
Hit with caused tube bundle vibration, improve the security reliability of heat exchanger；And outer sound attenuation hole 61 depends on the setting of central tube 6, does not have
Have the additional volume for increasing heat exchanger, will not the heat exchange property of heat exchanging device affect, be both able to satisfy fluid in heat exchanger
Between high efficient heat exchanging, and part flow noise and fluid pressure pulse can be eliminated, structure is simple, at low cost, practical.
In the present embodiment, it is preferred that multiple partitions 7 are also arranged at intervals with inside the central tube 6, on the partition 7
Offer multiple interior sound attenuation holes 71；Multiple partitions 7 are arranged in interval inside central tube 6, and multiple interior noise eliminations are opened up on partition 7
Hole 71 leakage current and further strengthens the noise elimination effect of central tube 6 when can prevent shell fluid from circulating in medium channel.
In the present embodiment, it is preferred that the partition 7 is set at the central tube 6 and 3 binding site of baffle plate；Every
Plate 7 is set to the inside of central tube 6 at 3 binding site of baffle plate, can play reinforcement effect, prevent central tube 6 due to baffling
Plate 3 connects and the structural instability that is likely to occur.
In the present embodiment, it is preferred that the baffle plate 3 uses helical baffles, the spacing of the two neighboring partition 7
It is equal with the screw pitch of helical baffles；Baffle plate 3 is convenient for the setting of central tube 6 and is connected and fixed using helical baffles
The center convolution portion of helical baffles is fixed on the outer wall of central tube 6, structure is simple, and installation settings is convenient, while adjacent
Spacing between two partitions 7 is equal with the screw pitch of helical baffles, reinforcement structure stability.At this point, the heat exchanger tube 5 runs through
The helicoid of the helical baffles is arranged, and is not required to increase additional structure.
In the present embodiment, it is preferred that the central tube 6 is set to the center axial position of baffle plate 3；Central tube 6 is set
It is placed in the center axial position of baffle plate 3, convenient for the position setting of the installation of baffle plate 3 and heat exchanger tube 5 inside shell 1, is increased
The installation space of heat exchanger tube 5 improves the heat transfer effect of heat exchanger as far as possible.
In the present embodiment, it is preferred that the outer sound attenuation hole 61 and the interior sound attenuation hole 71 are circular hole, and outer sound attenuation hole
61 is equal with the diameter of interior sound attenuation hole 71；Outer sound attenuation hole 61 is all made of circular hole with interior sound attenuation hole 71 and diameter is equal, is ensuring to disappear
Under the premise of sound effective value, the difficulty of processing of structure is reduced, saves processing cost.
In the present embodiment, it is preferred that the both ends of central tube 6 are individually fixed on the tube sheet 4；Further, in described
Heart pipe 6 is round tube, and the outer sound attenuation hole 61 is uniformly distributed along the axial and circumferential of the central tube 6；Central tube 6 is set to shell
Center position and both ends are individually fixed on tube sheet 4 in 1, and multiple heat exchanger tubes 5 are arranged around the periphery of central tube 6, central tube 6
On outer sound attenuation hole 61 be uniformly distributed along the axial and circumferential of its outer wall, it is ensured that, can when shell fluid flows in medium runner
By enough outer sound attenuation holes 61, the noise elimination function of central tube 6 is made good use of to the full extent, sufficiently reduces Fluid pressure arteries and veins
The dynamic impact to tube bank and caused tube bundle vibration, improve the security reliability of heat exchanger.
At work, pipe side medium enters from pipe side-entrance 21 manages the ship heat exchanger with noise elimination function in the present embodiment
In case 2, since heat exchanger tube 5 is arranged through tube sheet 4, pipe side medium can enter heat exchanger tube 5 and come the other side via heat exchanger tube 5
In bobbin carriage 2, it is discharged by pipe side outlet 22；At the same time, shell-side medium enters inside shell 1 from shell-side inlet 11, due to
Shell 1 is separated to form medium runner by baffle plate 3, and shell-side medium is flowed along medium runner, in the process, shell-side medium meeting
It washes away heat exchanger tube 5 and heat occurs with the pipe side medium in heat exchanger tube 5 and exchange, so that heat exchange function is realized, finally, shell-side medium
It is discharged by shell-side outlet 12.
Outer sound attenuation hole 61 and central tube during shell fluid is flowed along medium runner, on 6 outer wall of central tube
The interior sound attenuation hole 71 on partition 7 inside 6 plays a role, and absorbs flow noise and fluid pressure pulse with dampening fluid, reduces
Impact and caused tube bundle vibration of the fluid pressure pulse to tube bank, improve the security reliability of heat exchanger；Meanwhile partition 7 can
Effectively reduce leakage current of the shell-side medium from outer sound attenuation hole 61 and interior sound attenuation hole 71.
Those skilled in the art can carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (8)
1. a kind of ship heat exchanger with noise elimination function characterized by comprising
Shell (1), shell (1) both ends are equipped with tube sheet (4), are equipped with bobbin carriage (2) on the outside of the tube sheet (4), two bobbin carriages (2)
On pipe side-entrance (21), pipe side outlet (22) is respectively set；Baffle plate (3) are equipped in the shell (1), (1) two end side of shell
Wall is equipped with shell-side inlet (11), shell-side outlet (12)；
Through the more heat exchanger tubes (5) for being distributed on baffle plate (3) and both ends and being connected to respectively with two bobbin carriages (2)；
Central tube (6) through baffle plate (3), the central tube (6) are fixedly connected with the baffle plate (3), central tube (6)
It is spaced apart on tube wall and is equipped with multiple outer sound attenuation holes (61).
2. a kind of ship heat exchanger with noise elimination function as described in claim 1, it is characterised in that: in the central tube (6)
Portion is also arranged at intervals with multiple partitions (7), and multiple interior sound attenuation holes (71) are offered on the partition (7).
3. a kind of ship heat exchanger with noise elimination function as claimed in claim 2, it is characterised in that: partition (7) setting
At the central tube (6) and baffle plate (3) binding site.
4. a kind of ship heat exchanger with noise elimination function as claimed in claim 3, it is characterised in that: the baffle plate (3) is adopted
Spacing with helical baffles, the two neighboring partition (7) is equal with the screw pitch of helical baffles.
5. a kind of ship heat exchanger with noise elimination function as described in claim 1, it is characterised in that: the central tube (6) sets
It is placed in the center axial position of baffle plate (3).
6. a kind of ship heat exchanger with noise elimination function as claimed in claim 2, it is characterised in that: the outer sound attenuation hole (61)
It is circular hole with the interior sound attenuation hole (71), and outer sound attenuation hole (61) is equal with the diameter of interior sound attenuation hole (71).
7. a kind of ship heat exchanger with noise elimination function as described in claim 1, it is characterised in that: the both ends of central tube (6)
It is individually fixed on the tube sheet (4).
8. a kind of ship heat exchanger with noise elimination function as described in claim 1, it is characterised in that: the central tube (6) is
Round tube, the outer sound attenuation hole (61) are uniformly distributed along the axial and circumferential of the central tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594373.0A CN109682238B (en) | 2018-12-25 | 2018-12-25 | Ship heat exchanger with noise elimination function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594373.0A CN109682238B (en) | 2018-12-25 | 2018-12-25 | Ship heat exchanger with noise elimination function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109682238A true CN109682238A (en) | 2019-04-26 |
| CN109682238B CN109682238B (en) | 2020-08-04 |
Family
ID=66189507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811594373.0A Active CN109682238B (en) | 2018-12-25 | 2018-12-25 | Ship heat exchanger with noise elimination function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109682238B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645078A (en) * | 2019-10-21 | 2020-01-03 | 盐城工业职业技术学院 | Automobile energy comprehensive recycling system and working method thereof |
| CN113002746A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113002745A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113028858A (en) * | 2021-03-23 | 2021-06-25 | 中国航发沈阳发动机研究所 | Self-adaptive heat exchanger based on memory alloy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60101486A (en) * | 1983-11-09 | 1985-06-05 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN201322563Y (en) * | 2008-12-15 | 2009-10-07 | 刘福贵 | Spiral-muffling heat exchanger |
| KR20110041660A (en) * | 2009-10-16 | 2011-04-22 | 주식회사 대우일렉트로닉스 | An accumulator of noise reduction type for refrigerator |
| CN102538562A (en) * | 2012-02-17 | 2012-07-04 | 西安交通大学 | Shell-and-tube heat exchanger with combined type one-shell-pass continuous spiral baffles |
| CN204944237U (en) * | 2015-07-21 | 2016-01-06 | 天津霍普环保科技有限公司 | A kind of waste gas afterheat recovery unit |
| CN107362657A (en) * | 2017-07-13 | 2017-11-21 | 衡阳屹顺化工有限公司 | A kind of noise reduction environmental protection tourie for chemical industry equipment |
-
2018
- 2018-12-25 CN CN201811594373.0A patent/CN109682238B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60101486A (en) * | 1983-11-09 | 1985-06-05 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN201322563Y (en) * | 2008-12-15 | 2009-10-07 | 刘福贵 | Spiral-muffling heat exchanger |
| KR20110041660A (en) * | 2009-10-16 | 2011-04-22 | 주식회사 대우일렉트로닉스 | An accumulator of noise reduction type for refrigerator |
| CN102538562A (en) * | 2012-02-17 | 2012-07-04 | 西安交通大学 | Shell-and-tube heat exchanger with combined type one-shell-pass continuous spiral baffles |
| CN204944237U (en) * | 2015-07-21 | 2016-01-06 | 天津霍普环保科技有限公司 | A kind of waste gas afterheat recovery unit |
| CN107362657A (en) * | 2017-07-13 | 2017-11-21 | 衡阳屹顺化工有限公司 | A kind of noise reduction environmental protection tourie for chemical industry equipment |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645078A (en) * | 2019-10-21 | 2020-01-03 | 盐城工业职业技术学院 | Automobile energy comprehensive recycling system and working method thereof |
| CN110645078B (en) * | 2019-10-21 | 2020-10-13 | 盐城工业职业技术学院 | Automobile energy comprehensive recycling system and working method thereof |
| CN113002746A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113002745A (en) * | 2021-02-02 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113002746B (en) * | 2021-02-02 | 2022-03-08 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113002745B (en) * | 2021-02-02 | 2022-03-15 | 中国船舶重工集团公司第七一九研究所 | Noise elimination cooler and ship cooling system |
| CN113028858A (en) * | 2021-03-23 | 2021-06-25 | 中国航发沈阳发动机研究所 | Self-adaptive heat exchanger based on memory alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109682238B (en) | 2020-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109682238A (en) | A kind of ship heat exchanger with noise elimination function | |
| CN104575482A (en) | Air silencer | |
| CN206190472U (en) | Gas attenuating device | |
| CN101907009A (en) | Impedance composite water-cooled muffler for diesel generator set | |
| CN202419029U (en) | Compound silencer | |
| CN209541496U (en) | A kind of ship heat-exchanger rig of multifunctional unit | |
| CN111928689B (en) | Printed circuit board type heat exchanger with noise elimination function | |
| CN204375412U (en) | A kind of air silencer | |
| CN201747435U (en) | Muffler of resistance compound type water cooling type diesel engine generator set | |
| CN207935603U (en) | A kind of smoke discharging pipe silencing apparatus | |
| CN212509001U (en) | Noise reduction silencer for fan | |
| CN113002745B (en) | Noise elimination cooler and ship cooling system | |
| CN204267970U (en) | A kind of combined type huge discharge steam evacuation silencing apparatus | |
| CN209688334U (en) | A kind of air exhaust muffler device of high-pressure gas pipelines valve | |
| CN207761924U (en) | Water pump | |
| CN206208075U (en) | Self-supporting spiral baffle heat exchanger | |
| CN206190473U (en) | Gas attenuating device | |
| JPS6346360B2 (en) | ||
| CN104913479B (en) | The pipe connecting structure, casing cooling device and air-conditioning equipment of noise can be reduced | |
| CN203867662U (en) | Multi-tube silencer | |
| CN217539123U (en) | Composite silencer | |
| CN209100354U (en) | A kind of impedance composite muffler | |
| CN213871675U (en) | Steam boiler's amortization mechanism | |
| CN218631380U (en) | Composite silencer for large-displacement steam discharge noise reduction | |
| CN211828101U (en) | Multi-silencing-unit axial flow silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |