CN105864546A - 90-degree low-resistance bend - Google Patents
90-degree low-resistance bend Download PDFInfo
- Publication number
- CN105864546A CN105864546A CN201610265745.XA CN201610265745A CN105864546A CN 105864546 A CN105864546 A CN 105864546A CN 201610265745 A CN201610265745 A CN 201610265745A CN 105864546 A CN105864546 A CN 105864546A
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- CN
- China
- Prior art keywords
- pipe section
- degree
- bend
- fin
- elbow
- 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.)
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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
- F16L43/00—Bends; Siphons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention aims at providing a 90-degree low-resistance bend which comprises a bend body. The bend body comprises a bent pipe section, a first straight pipe section and a second straight pipe section. Each of the inner edge and the outer edge of the longitudinal section of the bent pipe section is a 1/4 arc. The first straight pipe section and the second straight pipe section are connected with the bent pipe section and are located at the inlet end and the outlet end of the bent pipe section correspondingly. A 90-degree angle is formed between the first straight pipe section and the second straight pipe section. The bent pipe section, the first straight pipe section and the second straight pipe section are of a hollow structure. A first fin set and a second fin set which are matched with the bend body in shape are installed in the hollow structure, wherein the first fin set is located inside the second fin set, and the rotating angle of the first fin set and the second fin set is consistent with that of the bent pipe section. By means of the 90-degree low-resistance bend, impacts of fluid to the position, at the bend, of a pipeline and formation of vortexes are reduced, fluid resistance losses at the bend position of the pipeline due to backflow or the vortexes can be effectively reduced, the abrasion degree of the bend pipeline is lowered, and the probability of fluid leakage is lowered.
Description
Technical field
The present invention relates to a kind of pipeline, specifically with the pipeline of bend corner.
Background technology
Nowadays, a requisite part during pipeline has become people's life.Either in life the most in the industry,
The use of pipeline is the most visible, due to the reason such as external environment condition or fabric structure, when in pipeline, flow direction needs to change 90
When spending, the use of 90 degree of elbows is then necessary.
Existing 90 degree of elbows are typically only a kind of 90 degree of bend pipes, can only meet the change of fluid flow direction.But,
Some pipe diameters are very big or fluids within pipes flowing velocity quickly time, use 90 degree of elbows of tradition, fluid is often 90
Degree corner is by certain mobile obstacle, owing to effect of inertia fluid collides with tube wall, forms backflow or whirlpool, causes
The loss of fluid flow energy, increases flow resistance；Even can cause stream owing to flow-reversing impingement causes inside pipe fitting pressure to rise
The phenomenon that body is revealed.
The patent of Publication No. CN 101315194 A, discloses a kind of smoke canal elbow flow guiding device, 90 degree of elbows
Install several deflectors additional, it is achieved to flue gas water conservancy diversion and uniform effect.Although achieving the most to a certain extent flue gas
Water conservancy diversion and uniform effect, but, owing to the shape of deflector needs to meet flow field flow rule, its processing is general the numbest
Tired, and during long-term use, owing to flue gas containing the graininess impurity such as some dusts, deflector can accumulate relatively
Thick dust, the existence of dust makes the original streamline shape in outside of deflector change, affects water conservancy diversion effect, even occur
Blocking.The most this structure increases structural complexity and the processing cost of elbow.
Summary of the invention
It is an object of the invention to provide the fluid reducing elbow corner while meeting original 90 degree of elbow functions
Flow resistance, and realize the uniform 90 degree of low-resistance elbows of one with guide functions of convection cell.
The object of the present invention is achieved like this:
A kind of 90 degree of low-resistance elbows of the present invention, is characterized in that: include that elbow body, elbow body include bend loss and the
One straight length and the second straight length, the inner edge of bend loss longitudinal cross-section and outside be 1/4 circular arc, the first straight length and second straight
Pipeline section is all connected with bend loss and lays respectively at arrival end and the port of export of bend loss, between the first straight length and the second straight length
In an angle of 90 degrees, bend loss and the first straight length and the second straight length are hollow-core construction, are provided with and elbow in hollow-core construction
First group of fin that body shape adapts and second group of fin, first group of fin is positioned in second group of fin, first group of fin
Consistent with bend loss with the corner of second group of fin.
The present invention can also include:
1, elbow body, first group of fin and second group of fin are three concentric circulars on same cross section, and three same
Heart diameter of a circle is respectively d from small to large1、d2、d3, and
Present invention have an advantage that the present invention uses the method installing two groups of coaxial fins in former 90 degree of elbow pipelines additional,
It is divided into three strands of current during by fluids within pipes by 90 degree of elbows, reduces the fluid impact to elbow pipeline and the shape of whirlpool
Become, the fluid impedance losses caused due to backflow or whirlpool at channel bend can be effectively reduced, reduce elbow pipeline
The degree of wear and the probability of fluid leakage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the profile of the present invention.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1～2, a kind of 90 degree of low-resistance elbows of the present invention, connect including the elbow body 2 in 90 degree of bendings and two
Straight tube 1 and 3.Installing two groups of fins 4 and 5 in elbow additional, present three concentric circulars from the point of view of swan neck cross section, these three is same
The anchor ring area distributions rules such as the heart satisfactorily foot, the area of i.e. middle roundlet is respectively equal to the area of two annulus.Meanwhile, fin exists
The corner mode of 90 degree of corners is identical with pipe.From the point of view of section structure of the present invention, 90 degree of elbow corners all use
1/4 circular arc and circular arc are tangent with both sides straight tube, it is achieved seamlessly transit.
Fluid in pipeline through these 90 degree low-resistance elbows, pass through simultaneously middle little round pipe and two circular ring pipes from
Arrival end flows into, and flows out from the port of export after 90 degree of corners.
Three concentric circulars presented from the point of view of elbow cross section are satisfied waits anchor ring area distributions rule that is three concentrically ringed
Diameter ratio meets from small to large:
What 90 degree of general elbows the most only met fluids within pipes turns to requirement, rapid at rate of flow of fluid or
The occasion that pipe diameter is the biggest, bigger fluid impedance losses is often caused in elbow, simultaneously because the flowing of elbow fluid
The backflow formed or whirlpool can accelerate the abrasion of elbow and even result in the phenomenon of fluid leakage.
With reference to accompanying drawing 1, the invention discloses a kind of 90 degree of low-resistance elbows, including elbow body 2 and two of 90 degree of bendings
The straight tube 1 and 3 connected.Equipped with two groups of fins 4 and 5 in 90 degree of low-resistance elbows, fin corner mode and 90 degree of channel bend corners
Mode is identical.And all using 1/4 circular arc to carry out transition 90 degree of elbow corners, circular arc is tangent with two straight tube,
Realization seamlessly transits.
With reference to accompanying drawing 2, from the point of view of these 90 degree of low-resistance elbow cross-section of pipeline, present three concentric circulars, and these three is concentric
The anchor ring area distributions rules such as round-formed annulus meets, i.e. concentric circular diameter meets from small to large
Assume that fluid flows into from these 90 degree of low-resistance elbow inlet ends, then fluid will be divided into three strands, and one is from middle roundlet
Elbow pipeline flows through, and other two stocks, not along two circulating line flowings, are so guiding fluid to realize 90 degree of turnings in the duct
While flowing, prevent fluid 90 degree of elbow backflows or to form whirlpool to a certain extent, reduce fluid flow resistance,
Alleviate the fluid impact to 90 degree of elbow pipelines, reduce the risk that fluid leaks 90 degree of elbows.
A kind of 90 degree of low-resistance elbows disclosed by the invention, can apply or pipe diameter rapid at fluids within pipes flow velocity very
Big occasion, while realizing guide functions, reduces 90 degree of elbow fluid flow resistance and the energy loss of fluid, and greatly
The risk that the pressure that big minimizing fluids within pipes causes due to backflow or whirlpool 90 degree of elbows raises and causes fluid to leak,
Alleviate the abrasion at elbow pipeline.
Present configuration is simple, easily manufactured, and practicality is high, with low cost, flows at 90 degree of elbow pipelines for some
The occasion that speed is very fast, fluid resistance is bigger is the most applicable.
A kind of 90 degree of low-resistance elbows of the present invention, the straight tube 1 and 3 connected including the elbow body 2 in 90 degree of bendings and two,
90 degree of low-resistance elbows have two groups of fins 4 and 5, from the point of view of elbow pipeline cross-sectional structure, presents three concentric circulars, two groups of wings
Corner and 90 degree of low-resistance elbow corners of sheet 4 and 5 are completely the same, and fluid flows into from one end, through 90 degree of low-resistance elbow corners, flowing
Direction changes 90 degree, flows out from the other end.
Three concentric circulars that elbow pipeline cross-sectional structure presents such as meet at the regularity of distribution of anchor ring area, i.e. in the middle of little
The area of circle is respectively equal to the area of two annulus.
Two groups of fins are fixed on outside elbow pipe interior, are equivalent on the basis of original 90 degree of elbow pipelines in inside
Embed that two corners and original 90 degree of elbow corners are on all four and diameter such as meets at 90 degree of elbows of anchor ring area regularity.
Elbow corner is made up of 1/4 circular arc, and the corner of central fins 4 and 5 is to be made up of 1/4 circular arc and 6 equally
The center of circle of circular arc is same point.
Claims (2)
1. 90 degree of low-resistance elbows, is characterized in that: include that elbow body, elbow body include bend loss and the first straight length
With the second straight length, the inner edge of bend loss longitudinal cross-section and outside be 1/4 circular arc, the first straight length and the second straight length all with
Bend loss is connected and lays respectively at arrival end and the port of export of bend loss, in 90 degree between the first straight length and the second straight length
Angle, bend loss and the first straight length and the second straight length are hollow-core construction, are provided with and this bodily form of elbow in hollow-core construction
First group of fin that shape adapts and second group of fin, first group of fin is positioned in second group of fin, first group of fin and second
The corner of group fin is consistent with bend loss.
A kind of 90 degree of low-resistance elbows the most according to claim 1, is characterized in that: elbow body, first group of fin and
Two groups of fins are three concentric circulars on same cross section, and three concentrically ringed diameters are respectively d from small to large1、d2、d3, and
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265745.XA CN105864546A (en) | 2016-04-26 | 2016-04-26 | 90-degree low-resistance bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265745.XA CN105864546A (en) | 2016-04-26 | 2016-04-26 | 90-degree low-resistance bend |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105864546A true CN105864546A (en) | 2016-08-17 |
Family
ID=56628352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610265745.XA Pending CN105864546A (en) | 2016-04-26 | 2016-04-26 | 90-degree low-resistance bend |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105864546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043351A (en) * | 2019-11-27 | 2020-04-21 | 西安航天动力研究所 | Ultralow-temperature low-flow-resistance self-maintaining two-position three-way stop valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184859Y (en) * | 1993-12-17 | 1994-12-07 | 中国五环化学工程公司 | Fume pipe bent mounted with flow guide and direction guide blade |
| US6290266B1 (en) * | 1997-09-22 | 2001-09-18 | Michihiko Kawano | Suction elbow provided with built-in guide blades |
| DE10360839B3 (en) * | 2003-12-23 | 2005-06-09 | Naber Holding Gmbh & Co. Kg | Pipe elbow for coupling fluid pipelines incorporating freely movable flow guidance elements positioned in response to pipeline flow |
| CN102614723A (en) * | 2012-01-13 | 2012-08-01 | 中冶南方工程技术有限公司 | Anti-spark bend |
| CN104595918A (en) * | 2015-01-23 | 2015-05-06 | 中国电力工程顾问集团东北电力设计院有限公司 | Flue elbow with streamline type flow guide module |
| CN204328261U (en) * | 2014-11-10 | 2015-05-13 | 江苏青阳管业有限公司 | Large flow velocity pipeline |
| CN205781633U (en) * | 2016-04-26 | 2016-12-07 | 哈尔滨工程大学 | A kind of 90 degree of low-resistance elbows |
| CN106439347A (en) * | 2016-10-27 | 2017-02-22 | 哈尔滨理工大学 | 90-degree bent pipe guide piece arrangement method |
-
2016
- 2016-04-26 CN CN201610265745.XA patent/CN105864546A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184859Y (en) * | 1993-12-17 | 1994-12-07 | 中国五环化学工程公司 | Fume pipe bent mounted with flow guide and direction guide blade |
| US6290266B1 (en) * | 1997-09-22 | 2001-09-18 | Michihiko Kawano | Suction elbow provided with built-in guide blades |
| DE10360839B3 (en) * | 2003-12-23 | 2005-06-09 | Naber Holding Gmbh & Co. Kg | Pipe elbow for coupling fluid pipelines incorporating freely movable flow guidance elements positioned in response to pipeline flow |
| CN102614723A (en) * | 2012-01-13 | 2012-08-01 | 中冶南方工程技术有限公司 | Anti-spark bend |
| CN204328261U (en) * | 2014-11-10 | 2015-05-13 | 江苏青阳管业有限公司 | Large flow velocity pipeline |
| CN104595918A (en) * | 2015-01-23 | 2015-05-06 | 中国电力工程顾问集团东北电力设计院有限公司 | Flue elbow with streamline type flow guide module |
| CN205781633U (en) * | 2016-04-26 | 2016-12-07 | 哈尔滨工程大学 | A kind of 90 degree of low-resistance elbows |
| CN106439347A (en) * | 2016-10-27 | 2017-02-22 | 哈尔滨理工大学 | 90-degree bent pipe guide piece arrangement method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043351A (en) * | 2019-11-27 | 2020-04-21 | 西安航天动力研究所 | Ultralow-temperature low-flow-resistance self-maintaining two-position three-way stop valve |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |