CN106885083A - A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method - Google Patents
A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method Download PDFInfo
- Publication number
- CN106885083A CN106885083A CN201710232399.XA CN201710232399A CN106885083A CN 106885083 A CN106885083 A CN 106885083A CN 201710232399 A CN201710232399 A CN 201710232399A CN 106885083 A CN106885083 A CN 106885083A
- Authority
- CN
- China
- Prior art keywords
- runner
- vibration
- pipe fitting
- axial line
- reduction type
- 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
- 238000013016 damping Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000001603 reducing effect Effects 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008676 import Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000035772 mutation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of vibration-damping noise-reduction type pipe fitting and its manufacture method, using increasing material manufacturing technique, vibration-damping noise-reduction type pipe fitting has accomplished the gentle transition of sectional area at reducing, make runner along arc guide line gradual change, the axial line of at least one of which runner is in full curve shape Connectivity Section is intersected, the full curve shape continues vertically from the straightway end of place runner axial line, the rear straightway starting point of the runner axial line after reaching intersection Connectivity Section.Drainage can be carried out according to the direction of media flow, reduce resistance during media flow；Import and export cross section of fluid channel and accumulate summation by balancing, enable that medium is steady to be flowed in pipe fitting, so as to reach the effect of vibration and noise reducing, the pipeline of the occasion that is suitable for having higher requirements flow resistance, vibration and noise is connected.
Description
Technical field
The present invention relates to a kind of tubing products, and in particular to one kind has flow guiding structure, can realize effect of vibration and noise reduction
Tubing products and preparation method thereof, belong to mechanical engineering field.
Background technology
At present, pipeline is attached using pipe fitting mostly in the various pipe-line systems of China, and pipe fitting is added using machine mostly
The processes such as work, welding, casting are produced.These processes are limited to, the runner axial line of pipe fitting is typically linear
（Refer to Fig. 1）, the intersecting place of runner, then straight line intersection is at an angle for axial line.Because inertial flow, when media flow is arrived
During intersecting local of runner, medium intersecting runner side tube wall can be impacted after again along intersecting flow passage, make local pipe
Resistance increase.Therefore there is the situation of obvious partial high pressure and local high speed in runner intersection（Such as Fig. 2 and Fig. 3）, so as to cause
Pipe vibration and noise.Fig. 3 is referred to, the fluid of conventional pipe is directly impinged on tube wall by S1 mouthfuls of entrance, forms backflow.Afterwards
After afterflow body flows into pipe fitting, with backflow collision, cause the fluid stagnation at tube wall, produce partial high pressure,.Due to being produced in pipe fitting
A raw stagnant area, causes the anticlimax of pipe fitting actual internal area, fluid is flowed when being flowed to both sides by this stagnant area
Fast increase suddenly, and turbulent flow is produced in the pipeline of rear end, along with stagnant area, nearby fluid constantly mutually clashes into, so that
Pipeline produces vibration and noise.
Additionally, for the pipe fitting of reducing（Namely the caliber of cross pipe is different）, the mutation of its cross section of fluid channel can cause Jie
The mutation of matter pressure and flow velocity, can also cause pipe vibration and noise.
Finally, the inside of most of pipe fittings is difficult to process, particularly the pipe fitting of machining and welding forming, its internal hair
Thorn overlap, weld seam cannot be processed, and can significantly influence the flowing of medium in runner, cause pipe vibration and noise.
The content of the invention
The technical problem to be solved in the present invention is the defect for overcoming above-mentioned prior art, there is provided a kind of vibration-damping noise-reduction type pipe
Part, enables the steady flowing in pipe fitting of medium, so as to reach the function of vibration and noise reducing.
Further, on this basis, the present invention also provides a kind of method for manufacturing this vibration-damping noise-reduction type pipe fitting, makes
The inside for obtaining pipe fitting is conducive to vibration damping and noise reduction.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of vibration-damping noise-reduction type pipe fitting, including the runner that at least two intersections are connected, it is characterised in that：At least two runner
In, the axial line of at least one of which runner is in full curve shape Connectivity Section is intersected, and the full curve shape is from place runner
The straightway end of axial line continues vertically, and the rear straightway of the runner axial line rises after reaching intersection Connectivity Section
Point.
Further, the axial line full curve shape of the runner causes that runner circumference tube wall is integrally curved in full curve section
Qu Ercheng arced flow paths.
Further, at least two runner is branch flow passage, branch flow passage intersect communicate after in one end shape mutually converged
Into a sprue；The sprue seamlessly transits mode and is connected with each branch flow passage with caliber, gradual transition to branch flow passage.
Further, the cross section of fluid channel product of the sprue forms smooth gradual change transition with branch flow passage sectional area.
Further, the axial line of runner is in full curve shape Connectivity Section is intersected, and makes the axial line of intersecting runner by straight
Angle is intersecting to become arc transition connection.
Further, when sprue is reducing runner relative to each branch flow passage, cross section of fluid channel product of the sprue etc.
In branch flow passage sectional area sum.
Further, the inwall continuously smooth of the sprue and branch flow passage.
Further, the runner is the runner of circular cross-section.
A kind of manufacture method of above-mentioned vibration-damping noise-reduction type pipe fitting, it is characterised in that：Using increasing material manufacturing technique by pipe fitting
Of at least two intersecting runners be made arc, at least two runner, the axial line of at least one of which runner
It is in full curve shape Connectivity Section is intersected, the full curve shape prolongs vertically from the straightway end of place runner axial line
It is continuous, the rear straightway starting point of the runner axial line after reaching intersection Connectivity Section.
Further, intersect gentle transition of the place of communicating using sectional area in runner, make each runner caliber along arc stream
The guide line gradual change of road axle center, forms arc gradient tube.
Further, gentle transition is accumulated in runner infall Formation cross-section, makes caliber along arced flow path axle center guide line
Gradual change is smooth with tandem section to be connected.
Further, sprue sectional area approximately constant is equal to branch flow passage sum.
Further, the axial line of intersecting runner is made to become arc transition by right angle intersection.
Principle of the invention is：It is in full curve shape Connectivity Section is intersected by the axial line of the one of runner of runner,
So that runner steadily converges reaches effect of vibration and noise reduction.Meanwhile, vibration-damping noise-reduction type pipe fitting has accomplished the flat of sectional area at reducing
Slow transition, makes caliber along arc guide line gradual change.Fluid when by gradual change runner, by arc gradual change tube wall drainage, manage by edge
Wall smooth flow, only produces slight frictional impact, and produced vibration and noise is also less than conventional pipe.
The sectional area of the sprue of pipe fitting is designed as to be approximately equal to branch flow passage sectional area sum.
The design makes cross section of fluid channel accumulate approximately constant, so as to keep fluids within pipes flow velocity according to the principle of flow conservation
It is constant, reach fluid smooth flow, the effect of pipe vibration-damping noise reduction.Thus, vibration-damping noise-reduction type pipe fitting of the present invention, pipe fitting runner
Axial line is in full curve；Pipe fitting runner variable diameters transitions smooth；
Pipe fitting runner inner wall continuously smooth；Pipe fitting sprue sectional area is approximately equal to pipe fitting branch flow passage sectional area sum.
Meanwhile, vibration-damping noise-reduction type pipe fitting has carried out structure optimization using increasing material manufacturing technique to runner, can be according to medium flow field
Dynamic direction carries out drainage, reduces resistance during media flow, while balancing the cross section of fluid channel product imported and exported, realizes cross section of fluid channel
Long-pending smooth gradual change, enables the steady flowing in pipe fitting of medium, so as to reach the function of vibration and noise reducing.
The beneficial effects of the invention are as follows：The flow resistance at pipe fitting in pipe-line system can be reduced, the drainage to medium is realized, reduced
Impact of the fluid to tube wall, makes the media flow in pipe-line system steady, reduces vibration and the noise of pipe-line system.
Brief description of the drawings
Fig. 1 is four kinds of common flow passage structures of common pipe fitting in the prior art.
Fig. 2 is a kind of media flow situation of common pipe fitting inner flow passage intersection in the prior art.
Fig. 3 is the media flow situation of the inner flow passage intersection of another common pipe fitting in the prior art.
Fig. 4 is the vibration-damping noise-reduction type fitting structure schematic diagram of the one embodiment implemented according to the present invention.
Fig. 5 is the vibration-damping noise-reduction type fitting structure schematic diagram of second embodiment implemented according to the present invention.
Fig. 6 is the vibration-damping noise-reduction type fitting structure schematic diagram of the 3rd embodiment implemented according to the present invention.
Fig. 7 is the vibration-damping noise-reduction type fitting structure schematic diagram of the 4th embodiment implemented according to the present invention.
Fig. 8 is the mobility status after medium shunt in one embodiment vibration-damping noise-reduction type pipe fitting.
The flow passage structure of vibration-damping noise-reduction type pipe fitting includes but is not limited to the structure shown in figure.
Specific embodiment
Such as Fig. 4-8, the intersecting runner in pipe fitting is made arc using increasing material manufacturing technique, makes the axial line of intersecting runner
Arc transition is become by right angle intersection.
Such as Fig. 4, one embodiment：According to a kind of vibration-damping noise-reduction type pipe fitting that the present invention is implemented, increasing material manufacturing work is used
By the diameter of pipe fitting sprue, arcuately guide line is tapered into branch flow passage diameter skill, makes inside pipe fitting runner prominent without sectional area
The structure of change, refers to Fig. 4.Including at least two runners for intersecting connection（S2、S3）, it is characterised in that：At least two stream
In road, the axial line of at least one of which runner S2, S3 is in full curve shape Connectivity Section is intersected, and makes the axial line of intersecting runner
Become arc transition by right angle intersection to connect；The full curve shape is from the straightway end edge of place runner S2, S3 axial line
Axially continue, the rear straightway starting point of the runner axial line after reaching intersection Connectivity Section.
The axial line full curve shape of described runner S2, S3 causes runner circumference tube wall integrally in the bending of full curve section
Camber runner.
Described at least two runners S2, S3 are branch flow passage, and branch flow passage intersection forms one after communicating in the one end mutually converged
Individual sprue S1；Sprue S1 seamlessly transits mode and is connected with each branch flow passage S2, S3 with caliber, gradual transition to branch flow passage
S2、S3。
Further, the cross section of fluid channel product of the sprue S1 forms smooth gradual change transition with branch flow passage S2, S3 sectional area.
Further, when sprue S1 is reducing runner relative to each branch flow passage S2, S3, the runner of the sprue cuts
Area is equal to branch flow passage S2, S3 sectional area sum.
Further, the inwall continuously smooth of the sprue and branch flow passage S2, S3.
Equally, such as second embodiment of Fig. 5, a runner B crosses for arced flow path with line flowing channel A, its axial line
Full curve shape continues vertically from the straightway end of place runner axial line, the runner after reaching intersection Connectivity Section
The rear straightway starting point of axial line.The axial line full curve shape of the runner B causes runner circumference tube wall integrally in continuous
Curved section bending forms arced flow path.Runner A before the intersection relative to intersection after reducing.Runner A is after the intersection relative to intersection
Preceding reducing so that the runner A sectional areas approximately constant after converging is equal to sectional area sum before branch flow passage B and runner A reducings.
3rd embodiment：Such as Fig. 6, two runner B circumferentially cross for arced flow path and in same level with runner A, and two
Individual runner B axle heart line full curve shape continues vertically from the straightway end of place runner axial line, until reaching intersection
The rear straightway starting point of the runner axial line behind Connectivity Section.The axial line full curve shape of runner B causes runner circumference tube wall
It is overall to form arced flow path in full curve section bending.Runner A before the intersection relative to intersection after reducing, runner A and runner B exists
Diameter is different before reducing.Runner A after the intersection relative to intersect before reducing cause to converge after sprue sectional area approximately constant
Equal to branch flow passage B sums.
4th embodiment：As shown in fig. 7, two runner B are for arced flow path and in varying level peripheral level and runner A
Cross, two runner B axle heart line full curve shapes continue vertically from the straightway end of place runner axial line, until reaching
The rear straightway starting point of the runner axial line after to intersection Connectivity Section.The axial line full curve shape of runner B causes runner week
Integrally arced flow path is formed to tube wall in full curve section bending.Runner A causes to converge relative to reducing before intersecting after the intersection
Sprue sectional area approximately constant afterwards is equal to branch flow passage B sums.
Such as Fig. 8, the fluid of the vibration-damping noise-reduction type pipe fitting in Fig. 4 after sprue S1 mouthfuls of entrance by being only capable of clashing into minimum area
Tube wall, the stagnant area of generation is also very small., by arced flow path pilot flow direction both sides, fluid impact is gentle, stream for most fluid
Speed does not occur compared with macromutation, and fluids within pipes flowing is steady, and its vibration for producing and noise are respectively less than conventional pipe.
Because technique limitation, sectional area of the conventional pipe at reducing cannot accomplish gentle transition, fluid is by reducing
Flow velocity can produce mutation during runner, situations such as produce strong liquid collision, backflow, sinuous flow, cause vibration and the noise of pipeline.
By using increasing material manufacturing technique, vibration-damping noise-reduction type pipe fitting accomplished the gentle transition of sectional area at reducing, make caliber along
Arc guide line gradual change.Fluid, by arc gradual change tube wall drainage, along tube wall smooth flow, is only produced when by gradual change runner
Slight frictional impact, produced vibration and noise is also less than conventional pipe.
The sectional area of the sprue of pipe fitting is designed as to be approximately equal to branch flow passage sectional area sum.
The design makes cross section of fluid channel accumulate approximately constant, so as to keep fluids within pipes flow velocity according to the principle of flow conservation
It is constant, reach fluid smooth flow, the effect of pipe vibration-damping noise reduction.
Claims (10)
1. a kind of runner of vibration-damping noise-reduction type pipe fitting, including at least two intersection connections, it is characterised in that：At least two stream
In road, the axial line of at least one of which runner is in full curve shape Connectivity Section is intersected, and the full curve shape flows from place
The straightway end of road axial line continues vertically, the rear straightway of the runner axial line after reaching intersection Connectivity Section
Starting point.
2. vibration-damping noise-reduction type pipe fitting according to claim 1, it is characterised in that：The axial line full curve shape of the runner
So that runner circumference tube wall integrally forms arced flow path in full curve section bending.
3. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：At least two runner is branch
Runner, branch flow passage intersection forms a sprue after communicating in the one end mutually converged；The sprue is with each branch flow passage with caliber
The mode of seamlessly transitting is connected, gradual transition to branch flow passage.
4. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：The cross section of fluid channel product of the sprue
Smooth gradual change transition is formed with branch flow passage sectional area.
5. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：The axial line of runner is intersecting connection
Section is in full curve shape, the axial line of intersecting runner is become arc transition by right angle intersection and connects.
6. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：When sprue is relative to each branch flow passage
During for reducing runner, the cross section of fluid channel product of the sprue is equal to branch flow passage sectional area sum.
7. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：The sprue and branch flow passage it is interior
Wall continuously smooth.
8. vibration-damping noise-reduction type pipe fitting according to claim 1 and 2, it is characterised in that：The runner is the stream of circular cross-section
Road.
9. a kind of method for manufacturing one of the claims 1-8 vibration-damping noise-reduction type pipe fitting, it is characterised in that：Use increasing material
Manufacturing process is made arc by one of at least two intersecting runners in pipe fitting, at least two runner, at least within
One axial line of runner is in full curve shape, straight line of the full curve shape from place runner axial line Connectivity Section is intersected
Section end continues vertically, the rear straightway starting point of the runner axial line after reaching intersection Connectivity Section.
10. the manufacture method of vibration-damping noise-reduction type pipe fitting described in a kind of claim 9, it is characterised in that：Intersect in runner and communicate place
Using the gentle transition of sectional area, make each runner caliber along the guide line gradual change of arced flow path axle center, form arc gradient tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232399.XA CN106885083A (en) | 2017-04-11 | 2017-04-11 | A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232399.XA CN106885083A (en) | 2017-04-11 | 2017-04-11 | A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106885083A true CN106885083A (en) | 2017-06-23 |
Family
ID=59182870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710232399.XA Pending CN106885083A (en) | 2017-04-11 | 2017-04-11 | A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106885083A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757474A (en) * | 2021-08-05 | 2021-12-07 | 岭东核电有限公司 | Special-shaped three-way pipeline and manufacturing method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211973A (en) * | 1922-12-01 | 1924-03-03 | Raymond Deloraine Johnson | Improved means for connecting pipes or the like |
| US4418788A (en) * | 1981-04-13 | 1983-12-06 | Mitco Corporation | Branch take-off and silencer for an air distribution system |
| CN101963170A (en) * | 2010-10-26 | 2011-02-02 | 西安建筑科技大学 | Cross type shunting rectification cross joint |
| CN102563270A (en) * | 2010-12-29 | 2012-07-11 | 贵州英特利智能控制工程研究有限责任公司 | Tee with circular transition arc at convergence of three channels and manufacturing method thereof |
| CN104455872A (en) * | 2014-12-05 | 2015-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low-flow-resistance tee joint structure |
| CN104775485A (en) * | 2015-03-31 | 2015-07-15 | 中民筑友有限公司 | Water supply and drainage system of water supply and drainage integrated module and building |
| CN204940443U (en) * | 2015-09-25 | 2016-01-06 | 中民筑友有限公司 | A kind of prefabricated integrated soil stack |
| TW201633048A (en) * | 2015-01-30 | 2016-09-16 | 慧與發展有限責任合夥企業 | Integrated liquid cooling of a server system |
| CN103857499B (en) * | 2011-10-24 | 2016-12-14 | 美国石膏公司 | Many lower limbs for slurry distribution discharge boots |
| CN207018700U (en) * | 2017-04-11 | 2018-02-16 | 武汉海博瑞科技有限公司 | A kind of vibration-damping noise-reduction type pipe fitting |
-
2017
- 2017-04-11 CN CN201710232399.XA patent/CN106885083A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211973A (en) * | 1922-12-01 | 1924-03-03 | Raymond Deloraine Johnson | Improved means for connecting pipes or the like |
| US4418788A (en) * | 1981-04-13 | 1983-12-06 | Mitco Corporation | Branch take-off and silencer for an air distribution system |
| CN101963170A (en) * | 2010-10-26 | 2011-02-02 | 西安建筑科技大学 | Cross type shunting rectification cross joint |
| CN102563270A (en) * | 2010-12-29 | 2012-07-11 | 贵州英特利智能控制工程研究有限责任公司 | Tee with circular transition arc at convergence of three channels and manufacturing method thereof |
| CN103857499B (en) * | 2011-10-24 | 2016-12-14 | 美国石膏公司 | Many lower limbs for slurry distribution discharge boots |
| CN104455872A (en) * | 2014-12-05 | 2015-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low-flow-resistance tee joint structure |
| TW201633048A (en) * | 2015-01-30 | 2016-09-16 | 慧與發展有限責任合夥企業 | Integrated liquid cooling of a server system |
| CN104775485A (en) * | 2015-03-31 | 2015-07-15 | 中民筑友有限公司 | Water supply and drainage system of water supply and drainage integrated module and building |
| CN204940443U (en) * | 2015-09-25 | 2016-01-06 | 中民筑友有限公司 | A kind of prefabricated integrated soil stack |
| CN207018700U (en) * | 2017-04-11 | 2018-02-16 | 武汉海博瑞科技有限公司 | A kind of vibration-damping noise-reduction type pipe fitting |
Non-Patent Citations (1)
| Title |
|---|
| 李月红: "《化工原理》", 31 March 2016 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757474A (en) * | 2021-08-05 | 2021-12-07 | 岭东核电有限公司 | Special-shaped three-way pipeline and manufacturing method thereof |
| CN113757474B (en) * | 2021-08-05 | 2022-10-14 | 岭东核电有限公司 | Special-shaped three-way pipeline and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7412788B2 (en) | Material flow amplifier and elbow flow amplifier | |
| CN102644814B (en) | Large-diameter variable-diameter pipe joint and manufacturing method thereof | |
| CN103846026B (en) | The venturi mixer of adjustable contraction is contained in a kind of throat | |
| CN106523830B (en) | A kind of 90 ° of bend pipes of band water conservancy diversion gusset | |
| CN107449091B (en) | Resistance reduction optimization design method for confluence three-way air pipe | |
| CN108345714B (en) | Numerical simulation method for parameter design of inner annular jet flow pressure stabilizing cavity | |
| CN105289349A (en) | Axial stretchable stepped combined type Venturi mixer | |
| CN207018700U (en) | A kind of vibration-damping noise-reduction type pipe fitting | |
| CN106885083A (en) | A kind of vibration-damping noise-reduction type pipe fitting and its manufacture method | |
| CN106682287A (en) | Design method of inner and outer duct molded line of turbofan engine | |
| CN109595422A (en) | A kind of steam condensation induction water hammer cancellation element based on rotary twisted strip | |
| CN102410421A (en) | Novel 90-degree variable-curvature bent pipe | |
| JP5972565B2 (en) | Double pipe joint structure | |
| CN101813224B (en) | Low-resistance square diverging reducing component | |
| CN103846027B (en) | A kind of diffuser contains the venturi mixer of shrinkage cavity | |
| CN104455872A (en) | Low-flow-resistance tee joint structure | |
| CN103883835B (en) | A kind of pipe vibration damper | |
| JP6194411B1 (en) | Processing nozzle and optical processing device | |
| CN206496131U (en) | New many channel pipeline connecting pieces | |
| CN202001765U (en) | Flow rate adjuster for bent pipe | |
| CN102155477A (en) | Rectifier for regulating velocity distribution of elbow pipe | |
| CN202001435U (en) | Current rectifier used for adjusting flow velocity distribution of bend pipe | |
| CN105715815A (en) | Jet valve core used for bathroom valve | |
| CN106640769A (en) | Conical water inflow device for improving instability hydraulic characteristic of axial flow pump | |
| CN203665921U (en) | Precise efficient tubular product sizing sleeve for producing PVC tubular product |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |
|
| RJ01 | Rejection of invention patent application after publication |