CN206035898U - Uniform flow distribution device based on shrink curve design - Google Patents
Uniform flow distribution device based on shrink curve design Download PDFInfo
- Publication number
- CN206035898U CN206035898U CN201620842770.5U CN201620842770U CN206035898U CN 206035898 U CN206035898 U CN 206035898U CN 201620842770 U CN201620842770 U CN 201620842770U CN 206035898 U CN206035898 U CN 206035898U
- Authority
- CN
- China
- Prior art keywords
- blade
- curve
- sleeve pipe
- flow field
- shrinkage
- 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.)
- Expired - Fee Related
Links
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model relates to an uniform flow distribution device based on shrink curve design belongs to the liquid filling pipeline vibration noise control field. The device includes sleeve pipe, blade and the bent line shrinkage body, and bent line shrinkage personally experiences sth. Part of the body inside the sheathed tube, the blade root of blade and bent line shrinkage body fixed connection, apex and sleeve pipe fixed connection. The device based on the runner shrink curve design with the expansion, realize the purpose that the convection cell carries out the rectification in the axial, adopt circumference blade water conservancy diversion cutting design, reach the convection cell and carry out the effect that the runner was divided in circumference, finally reach and carry out the even purpose of rectification to disorderly flow field in limited length, the device compact structure, the installation space demand is little, is applicable to to install at relatively poor pump entrance point and the downstream of the shutter of influent stream state for improve the speed and the pressure degree of consistency in flow field, reduce the vibration noise of pump and valve.
Description
Technical field
The utility model is related to a kind of even flow field device being designed based on shrinkage curve and using blade, belongs to and fills
Liquid pipeline Noise and Vibration Control field.
Background technology
In general the cabin interior limited space such as cabin of large ship, does not have in pump inlet and valve export position etc.
Enough space arrangement straight lengths carry out rectification, and too urgent system pipeline trend can directly affect the equipment influent stream shape such as water pump
Condition, causes the inlet velocity field of impeller inlet portion of runner to be distorted.According to turbomachine fluid inlet speed triangle, mistake
Little or excessive inlet velocity angle all causes fluid to occur to separate in impeller blade, on the one hand can cause the overall stress of impeller not
Uniformly, and then the vibration of equipment can be caused to aggravate, the axle frequency and leaf frequency noise of pump on the other hand can be caused significantly to raise.Equipment is long
Phase is run under this inlet condition, can reduce the service life of equipment, and vibration equipment aggravation in addition produces vibration noise, can pass through
System pipe network and the outside radiated noise of maritime mouth, affect the Stealth Fighter on naval vessel.Currently for unit fixed on water pump suction elbow and valve
The rectification design of exit flow field is concentrated on guide vane, but guide vane requires higher, effect to processing and setting angle
It is poor.Having not yet to see a kind of even flow field device can be suitable in the fluid media (medium) such as water, oil field, again can be shorter
Length range in improve flow field uniformity.
Utility model content
For the defect that prior art is present, the utility model provides a kind of even flow field dress designed based on shrinkage curve
Put, the Curve Design that the device is shunk based on runner and expanded, realization carry out the purpose of rectification in the axial direction to fluid；Using axle
Design to the cutting of blade water conservancy diversion, reach carries out the effect of runner division in the circumferential to fluid, is finally reached in limited length
It is interior to carry out the uniform purpose of rectification to disorderly flow field.
The purpose of this utility model is achieved through the following technical solutions.
It is a kind of based on shrinkage curve design even flow field device, the even flow field device include sleeve pipe, blade and
Curve shrinkage body；
Curve shrinkage body is attached by blade between the inside of sleeve pipe, curve shrinkage body and sleeve pipe, and the two of sleeve pipe
End is fixedly connected with exterior line respectively；The blade root of blade is fixedly connected with curve shrinkage body, and blade tip is fixedly connected with sleeve pipe, and
Blade is arranged evenly in the circumference in the middle part of curve shrinkage external surface.
The curve shrinkage body is divided into front diversion section, front contraction section, four part of after-contraction section and rear diversion section；Front water conservancy diversion
The profile of section is blade profile, and the profile of rear diversion section is linear pattern or blade profile, the outer molded line of front contraction section and the external form of after-contraction section
Line is into axial symmetry.
The preferred Witozinsky curves of outer molded line of the outer molded line of the front contraction section and after-contraction section, Batchelor-
Shaw curves, Pennsylvania curves, bicubic curve and its Optimal Curve, five power curves, Qian Xuesen curve, Sa Nuoyang
Curve.
It is attached using welding or integrally casting shaping technology between the blade and sleeve pipe and curve shrinkage body；Adopt
With during welding, needs carry out grinding process to the position after welding.
In even flow field device described in the utility model, according in exterior line fluid enter stream mode and uniformly refer to
Target requirement, determines the design of the blade profile and circumferentially distributed angle and curve shrinkage body structure of blade；The footpath vector product of blade profile is folded
Rule is not restricted to straight line.
Beneficial effect：
(1) Curve Design that even flow field device described in the utility model is shunk based on runner and expanded, realizes axially
On carry out the purpose of rectification to fluid.Curve shrinkage body is adopted on the uniform device axial direction, and which is divided into elder generation vertically
The runner expanded after contraction, during the runner that fluid is formed with sleeve pipe by curve shrinkage body, fluid is first by water conservancy diversion before blade profile
Body, accelerates subsequently into the runner that curve shrinkage body is formed, and in accelerator, the vortex system being previously formed can accelerate to fall into oblivion fluid
Go out, then by the runner of runner flaring, fluid completes the process being pressurized of slowing down, so as to complete the axial rectification of fluid.Fluid leads to
After design of slowing down again is first accelerated, the vortex structures in inlet fluid can be buried in oblivion faster, form more uniform flow field, and flow
The drag losses in road maintains relatively low level.
(2) even flow field device described in the utility model is reached and fluid is existed using circumferential blade water conservancy diversion cutting design
The effect of runner division is carried out in circumference.In the circumferentially blade of the even flow field device, on the one hand to curve shrinkage body
Play and support fixed effect, on the other hand divide the circumferential of runner for different regions.It is, in general, that column type runner
Central region flow velocity is very fast, it is easy to the dissipation of vortex structures, and leans on antermarginal partially due to the less reason of flow velocity, vortex system knot
Length needed for structure dissipates is larger.By the blade division circumferential to runner, the big structure of the import vortex system that can accelerate the failure, and
Blade can be directed at maximum vortex system to flow position according to actual installation position.By the design of said structure, on the one hand can be with
Suppress velocity field development in the circumferential, on the other hand the vortex system of larger structure can be broken up.
(3) even flow field apparatus structure described in the utility model is compact, and installing space demand is little；Be suitably mounted to into
The poor pump inlet end of stream mode and valve downstream, for improving speed and the pressure uniformity in flow field, reduce pump and valve
Vibration noise；All-metal construction, can seawater corrosion resistance, environmental suitability is strong.
Description of the drawings
Fig. 1 is the structural representation of the even flow field device described in embodiment.
Fig. 2 is the sectional view of the even flow field device described in embodiment.
Fig. 3 is the structural representation of the curve shrinkage body described in embodiment.
Wherein, 1- sleeve pipes, 2- blades, 3- curve shrinkage bodies, diversion section before 3-1-, contraction section before 3-2-, 3-3 after-contraction
Section, diversion section after 3-4-.
Specific embodiment
With reference to the accompanying drawings and detailed description the utility model is described further.
It is a kind of based on shrinkage curve design even flow field device, the even flow field device include sleeve pipe 1, blade 2 with
And curve shrinkage body 3；
The blade 2 is designed to the NACA blade profiles of symmetrical equal thickness；3 points of the curve shrinkage body is front diversion section 3-1, front
Contraction section 3-2, after-contraction section 3-3 and rear tetra- parts of diversion section 3-4；The profile of front diversion section 3-1 be blade profile, rear diversion section 3-
4 profile is linear pattern；The material of sleeve pipe 1, blade 2 and curve shrinkage body 3 is stainless steel；The outer molded line of front contraction section 3-2
With the outer molded line of after-contraction section 3-3 into axial symmetry and for the bicubic curve of optimization；
Curve shrinkage body 3 is attached by blade 2 between the inside of sleeve pipe 1, curve shrinkage body 3 and sleeve pipe 1, sleeve pipe
1 two ends are fixedly connected with exterior line respectively by flange；The blade root of blade 2 is welded with the outer surface of curve shrinkage body 3, leaf
Point is welded with the inner surface of sleeve pipe 1, six blades 2 equidistantly distributed row in the circumference in the middle part of 3 outer surface of curve shrinkage body
Row；After the completion of welding, the position of welding is polished flat.
Operation principle：When even flow field device described in the present embodiment works, the fluid in exterior line is first by song
Linear shrinkage body 3 slows down supercharging, then breaks original vortex structures by the cutting of blade 2 and isolates whirlpool for less yardstick, finally
Reduced pressure by 3 speedup of curve shrinkage body again, be finally reached the purpose of uniform flow field.
When carrying out rectification using the even flow field device this enforcement Suo Shu, according to the concrete influent stream shape of fluid in exterior line
State and uniform index request, adjust blade profile, product folded rule, the distribution angle in 3 circumference of curve shrinkage body and the peace of blade 2
Holding position, the structure for determining curve shrinkage body 3.
In sum, preferred embodiment of the present utility model is these are only, is not intended to limit of the present utility model
Protection domain.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. all should be wrapped
It is contained within protection domain of the present utility model.
Claims (2)
1. it is a kind of based on shrinkage curve design even flow field device, it is characterised in that：The even flow field device includes sleeve pipe
(1), blade (2) and curve shrinkage body (3)；
Curve shrinkage body (3) are divided into front diversion section (3-1), front contraction section (3-2), after-contraction section (3-3) and rear water conservancy diversion
Section (3-4) four part；The profile of front diversion section (3-1) is blade profile, and the profile of rear diversion section (3-4) is linear pattern or blade profile, front
The outer molded line of contraction section (3-2) is with the outer molded line of after-contraction section (3-3) into axial symmetry；The outer molded line of front contraction section (3-2) is with after
The outer molded line of contraction section (3-3) be Witozinsky curves, Batchelor-Shaw curves, Pennsylvania curves, double three
Secondary curve and its Optimal Curve, five power curves, Qian Xuesen curve or Sa Nuoyang curves；
Curve shrinkage body (3) is connected by blade (2) between the inside of sleeve pipe (1), curve shrinkage body (3) and sleeve pipe (1)
Connect, the two ends of sleeve pipe (1) are fixedly connected with exterior line respectively；The blade root of blade (2) is fixedly connected with curve shrinkage body (3),
Blade tip is fixedly connected with sleeve pipe (1), and blade (2) is arranged evenly in the circumference in the middle part of curve shrinkage body (3) outer surface.
2. it is according to claim 1 it is a kind of based on shrinkage curve design even flow field device, it is characterised in that：The leaf
It is attached using welding or integrally casting shaping technology between piece (2) and sleeve pipe (1) and curve shrinkage body (3)；Using weldering
When connecing, needs carry out grinding process to the position after welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620842770.5U CN206035898U (en) | 2016-08-05 | 2016-08-05 | Uniform flow distribution device based on shrink curve design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620842770.5U CN206035898U (en) | 2016-08-05 | 2016-08-05 | Uniform flow distribution device based on shrink curve design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035898U true CN206035898U (en) | 2017-03-22 |
Family
ID=58308411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620842770.5U Expired - Fee Related CN206035898U (en) | 2016-08-05 | 2016-08-05 | Uniform flow distribution device based on shrink curve design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015097A (en) * | 2016-08-05 | 2016-10-12 | 中国船舶重工集团公司第七〇九研究所 | Flow field uniformizing device designed based on contraction curve |
-
2016
- 2016-08-05 CN CN201620842770.5U patent/CN206035898U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015097A (en) * | 2016-08-05 | 2016-10-12 | 中国船舶重工集团公司第七〇九研究所 | Flow field uniformizing device designed based on contraction curve |
| CN106015097B (en) * | 2016-08-05 | 2019-03-19 | 中国船舶重工集团公司第七一九研究所 | A kind of even flow field device based on shrinkage curve design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759916A (en) | Novel circulation experiment water tank | |
| CN206035898U (en) | Uniform flow distribution device based on shrink curve design | |
| CN208565149U (en) | A kind of pipeline even flow field device for the flow distortion that is self-regulated | |
| CN207647673U (en) | A kind of tubular turbine | |
| CN108062444B (en) | Bent pipe parameter determination method | |
| CN106015097B (en) | A kind of even flow field device based on shrinkage curve design | |
| CN101813224B (en) | Low-resistance square diverging reducing component | |
| CN104533828B (en) | A kind of reversible axial flow pump Hydraulic Design Method | |
| US11333161B2 (en) | Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller | |
| CN206206274U (en) | A kind of water-inlet horn pipe with axial groove | |
| CN101672368A (en) | Stop valve of pipeline | |
| CN108591195A (en) | A kind of pipeline even flow field device of self-regulation flow distortion | |
| Xue et al. | Research and optimization of performances of a pump turbine in pump mode | |
| CN104165156B (en) | A kind of axial-flow pump impeller method for designing not waiting outlet circulation distribution | |
| CN103470581B (en) | A kind of radial gas rectifier | |
| Shi et al. | Numerical simulation and optimization of solid-liquid two-phase turbulent flow in back swept axial pump | |
| CN206036498U (en) | Adopt uniform flow distribution device of big or small blade design | |
| CN206862426U (en) | A kind of shrunk type Venturi meter | |
| CN106090520A (en) | A kind of even flow field device using big and small blade to design | |
| CN204942089U (en) | A kind of through-flow pump diffusion diffuser | |
| CN103895850A (en) | Combined energy-saving shaft bracket device | |
| CN203476813U (en) | Elbow diversion device of centrifugal compressor inlet pipeline | |
| CN208804377U (en) | A kind of T-type tee tube | |
| CN102720690A (en) | Guide vane body of vertical-type diagonal flow pump | |
| CN201991882U (en) | Reducing flow pipe section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20190805 |