CN203585670U - Biomimetic anti-washout pipeline elbow - Google Patents
Biomimetic anti-washout pipeline elbow Download PDFInfo
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- CN203585670U CN203585670U CN201320631793.8U CN201320631793U CN203585670U CN 203585670 U CN203585670 U CN 203585670U CN 201320631793 U CN201320631793 U CN 201320631793U CN 203585670 U CN203585670 U CN 203585670U
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- biomimetic
- rib
- bionical
- washout
- ribs
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Abstract
The utility model discloses a biomimetic anti-washout pipeline elbow. The washout bearing surface of the pipeline elbow is evenly provided with biomimetic ribs, the stretching directions of the biomimetic ribs are parallel to the flowing direction, and the characteristic curve of the contact curved surface of each biomimetic rib and a flow field is an interior arc or a semi circle; according to another embodiment, the stretching directions of the biomimetic ribs are perpendicular to the flow coming direction, and the characteristic curve of the contact curved surface of each biomimetic rib and a flow field is two arcs which are externally tangent. According to the biomimetic anti-washout pipeline elbow, the biomimetic ribs are main areas where solid particles bear washout, the areas are higher than the wall surface by a certain distance, and namely the thickness of the elbow is increased locally. The biomimetic ribs effectively control the wall-close flow field with multi-phase flow continuous phases, impact angles between the solid partitions and the wall surface are controlled, and the wall surface of the pipeline elbow is effectively protected from the angle of flow field control.
Description
Technical field
The utility model relates to a kind of pipe joint, particularly a kind of bionical erosion resistance channel bend.Belong to field of chemical engineering.
Technical background
Pressure piping is being carried fluid or containing having the advantages such as freight volume is large, efficiency is high, loss is low cost is low aspect solid particle fluid, being widely used in the industries such as petrochemical industry, metallurgy, nuclear power, thermoelectricity, coalification, mine and building, is the important component part of industrial equipment.Only, with regard to oil gas transport service, the oil of China existing 70% and 99% rock gas are by pipeline transport, and national oil and gas pipes total length reaches 80,000 kilometers, and during " 12 ", the newly-built duct length of China is estimated to reach 6.4 ten thousand kilometers.Pressure pipeline elbow is the heavy connection of pressure piping, because elbow flow field change is violent, often bears the serious erosion corrosion of liquid fixed double phase flow wearing and tearing in use, causes the local attenuation of tube wall and loses efficacy, and causes huge economic loss.In some cases, also can cause dielectric leakage welded tube, because it is sudden and high risk, tend to lead to serious production accident, to personal safety and even ecotope, all can cause the infringement that cannot estimate.In developed countries such as China, Great Britain and America and Europe, the research that improves the erosive wear resistance of pipeline is the focus that researcher pays close attention to always.
Tradition improves pipeline abrasion-resistance conventional method can to a certain degree can play the erosion resistant effect of raising pipeline as the relation etc. that adopts erosion resistant channel bend material, spraying erosion resistance coating and optimize channel bend and flow field parameter, but because elbow is subject to the direct impact of solid particle, be still difficult to obtain desirable effect.The utility model is subject to the inspiration of the non-smooth property on aquatic animal surface and surface, sand dune, has proposed a kind of bionical erosion resistance surface of controlling near wall region multiphase flow flow field, strengthens the corrosion resisting property of elbow, closely improves working life.
Model utility content
Model utility is subject to the inspiration of the non-smooth property on aquatic animal surface and surface, sand dune, a kind of bionical erosion resistance channel bend is provided, this bionical erosion resistance channel bend has the bionical erosion resistance surface that can control near wall region multiphase flow flow field, strengthened the corrosion resisting property of elbow, and then improved working life.
The utility model is to be subject to erosion surface to be evenly laid with bionical rib at channel bend;
Described bionical rib exhibition is to laying along flowing to, the indicatrix of bionical rib and flow field contact surface is one section of minor arc or semicircle, according to the difference of continuous phase reynolds' number in channel bend, article two, between bionical rib, angle α is 3-15 °, bionical rib heights h is 0.2-4mm, and bionical rib cross section radius of arc is 0.2-5mm;
Described bionical rib exhibition to come flow path direction vertical, the indicatrix of bionical rib and flow field contact surface is two sections of mutually circumscribed arcs, and according to the difference of continuous phase reynolds' number in channel bend, two bionical rib angle β are 3-12 °, bionical rib heights h is 0.2-4mm, the radius r of two sections of arcs
1for 0.2-5mm, r
2for 1-20mm.
The beneficial effects of the utility model are:
1, bionical rib structure is the main positions that solid particle are subject to erosion, and this region exceeds wall certain altitude, is equivalent to the thickness that part has increased elbow;
2, bionical rib is controlled the near wall region flow field of continuous phase of multiphase flow effectively, thereby has controlled the angle of attack of solid particle to wall, has effectively protected the wall of channel bend from flow field control angle.
Accompanying drawing explanation
Fig. 1 is that schematic diagram is laid in the utility model the first embodiment's bionical rib following current.
Fig. 2 is that A-A in Fig. 1 is to sectional view.
Fig. 3 is that B-B in Fig. 2 is to sectional view.
Fig. 4 is the utility model the first embodiment's bionical rib structure schematic diagram.
Fig. 5 be the utility model the second embodiment bionical rib with carry out the vertical schematic diagram of laying of flow path direction.
Fig. 6 be in Fig. 5 C-C to sectional view.
Fig. 7 is the utility model the second embodiment's bionical rib structure schematic diagram.
Embodiment
Refer to shown in Fig. 1 to Fig. 4, for the first embodiment of the present utility model, the present embodiment is to be subject to erosion surface to be evenly laid with bionical rib 1 at channel bend, described bionical rib 1 exhibition is to laying along flowing to, bionical rib 1 is one section of minor arc or semicircle with the indicatrix of flow field contact surface, and according to the difference of continuous phase reynolds' number in channel bend, between two bionical ribs, angle α is 3-15 °, bionical rib heights h is 0.2-4mm, and bionical rib cross section radius of arc r is 0.2-5mm.
In the present embodiment, when pipe diameter is 100mm, in pipe, two phase flow is respectively oil and the grains of sand, and the density of oil is 800kg/m
3viscosity is 0.048kg/ms, speed is 6m/s, the Mean particle diameter of sand grains is 0.55mm, and when flow is 2.2kg/s, the height h of bionical rib 1 is 0.5mm, bionical rib 1 cross section radius of arc r is 1.5mm, article two, when the angle α of bionical rib 1 is 5 °, there is good Erosive Properties, can guarantee that the pressure loss increases simultaneously little.
Refer to shown in Fig. 5 to Fig. 7, for the second embodiment of the present utility model, the present embodiment is to be subject to erosion surface to be evenly laid with bionical rib 1 at channel bend, 1 exhibition of described bionical rib to come flow path direction vertical, the indicatrix of bionical rib 1 and flow field contact surface is two sections of mutually circumscribed arcs, and according to the difference of continuous phase reynolds' number in channel bend, two bionical rib angle β are 3-12 °, bionical rib heights h is 0.2-4mm, the radius r of two sections of arcs
1for 0.2-5mm, r
2for 1-20mm.
In the present embodiment, when pipe diameter is 100mm, in pipe, two phase flow is respectively oil and the grains of sand, and the density of oil is 800kg/m
3, viscosity is 0.048kg/ms, and speed is 15m/s, and the Mean particle diameter of sand grains is 0.3mm, and when flow is 0.8kg/s, bionical rib 1 height h is 0.6mm, the radius that forms two sections of arcs of bionical rib 1 indicatrix is respectively r
1for 2mm, r
2for 4mm, when the angle β of two bionical ribs 1 is 10 °, there is good erosion-wear-resisting performance.
Claims (1)
1. a bionical erosion resistance channel bend, is characterised in that: be to be subject to erosion surface to be evenly laid with bionical rib at channel bend, described bionical rib exhibition is to laying along flowing to, or the exhibition of bionical rib to come flow path direction vertical; Described bionical rib exhibition flows to while laying to edge, the indicatrix of bionical rib and flow field contact surface is one section of minor arc or semicircle, article two, between bionical rib, angle α is 3-15 °, and bionical rib heights h is 0.2-4mm, and bionical rib cross section radius of arc is 0.2-5mm; Described bionical rib exhibition is to when coming flow path direction vertical, and the indicatrix of bionical rib and flow field contact surface is two sections of mutually circumscribed arcs, and two bionical rib angle β are 3-12 °, and bionical rib heights h is 0.2-4mm, the radius r of two sections of arcs
1for 0.2-5mm, r
2for 1-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631793.8U CN203585670U (en) | 2013-10-14 | 2013-10-14 | Biomimetic anti-washout pipeline elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631793.8U CN203585670U (en) | 2013-10-14 | 2013-10-14 | Biomimetic anti-washout pipeline elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585670U true CN203585670U (en) | 2014-05-07 |
Family
ID=50583584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631793.8U Withdrawn - After Issue CN203585670U (en) | 2013-10-14 | 2013-10-14 | Biomimetic anti-washout pipeline elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498988A (en) * | 2013-10-14 | 2014-01-08 | 吉林大学 | Bionic erosion-resisting pipeline elbow |
-
2013
- 2013-10-14 CN CN201320631793.8U patent/CN203585670U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498988A (en) * | 2013-10-14 | 2014-01-08 | 吉林大学 | Bionic erosion-resisting pipeline elbow |
| CN103498988B (en) * | 2013-10-14 | 2015-06-17 | 吉林大学 | Bionic erosion-resisting pipeline elbow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |