CN110375949A - Wire wind tunnel test model and manufacturing method thereof - Google Patents
Wire wind tunnel test model and manufacturing method thereof Download PDFInfo
- Publication number
- CN110375949A CN110375949A CN201910729958.7A CN201910729958A CN110375949A CN 110375949 A CN110375949 A CN 110375949A CN 201910729958 A CN201910729958 A CN 201910729958A CN 110375949 A CN110375949 A CN 110375949A
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- conducting wire
- wind tunnel
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000004088 simulation Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000012943 hotmelt Substances 0.000 claims abstract description 6
- 238000010146 3D printing Methods 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 5
- 230000002950 deficient Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/379—Handling of additively manufactured objects, e.g. using robots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Robotics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a wire wind tunnel test model, which comprises a core body and a plurality of simulation line bodies, wherein the core body is a cylinder, the outer surface of each simulation line body is bonded with the outer surface of the core body, the simulation line bodies are twisted together by taking the core body as a center to form a model with the same appearance as a real wire, the core body and the simulation line bodies are both hot-melt plastic material bodies, the model is easy to form and convenient to manufacture, the weight after cooling and forming is lighter than that of the real wire, and the model has a straight central axis and certain rigidity and is convenient to test; the invention also provides a manufacturing method of the wire wind tunnel test model, which can ensure that the model is 1:1, the real wire is restored, the error of the manufacturing process can be reduced, and the defective rate is reduced.
Description
Technical field
The present invention relates to cable aeromechanics experimental technique field, more particularly to a kind of conducting wire model in wind tunnel and its
Production method.
Background technique
With increasing rapidly for China Power transmission capacity, select division, large capacity, remote transmission line of electricity as must
So.Ultra-high/extra-high voltage power transmission circuit caused by windage, it is non-synchronous wave etc. calculate in primary concern is that conducting wire Shape Coefficient.Conducting wire
Shape Coefficient, also referred to as air resistance coefficient is an only relevant parameter with construction profile.It is set carrying out transmission line structure
Timing, Shape Coefficient directly affect the calculated result of conducting wire wind load, and then influence structure design load value and influence design knot
Fruit.Currently, wind tunnel test is to study most effective, the most direct means of conducting wire Shape Coefficient.
Existing conducting wire is usually that stranded conductor is twisted around a center line.And true conducting wire is with biggish
Flexibility, in wind tunnel test, not in the same horizontal line, and conducting wire uses metal for the central axes of conducting wire, and weight is larger, dynamometry
Balance is difficult to match its weight, and carrying out wind tunnel test to true conducting wire has certain difficulty and error.
Summary of the invention
Place in view of the deficiency of the prior art, the object of the present invention is to provide a kind of conducting wire model in wind tunnel,
It is easy to test and facilitate production.
In order to solve the above technical problems, conducting wire model in wind tunnel provided by the invention, including core and multiple artificial lines
Body, the core are cylindrical body, and the outer surface of the simulation wire body is Nian Jie with the outer surface of the core, multiple artificial lines
Body twists together to form model identical with the shape of true conducting wire, the core and the simulation centered on the core
Wire body is hot melt plastic material body.
Preferably, the core is hollow cylinder.
Preferably, the ratio of the diameter of the thickness of the core and the core is not less than 1:10.
Preferably, the core and the simulation wire body are resinite.
The present invention also provides the production methods of above-mentioned conducting wire model in wind tunnel, include the following steps:
Step 1 is scanned the true conducting wire for needing to carry out wind tunnel test, measures or according to the true conducting wire
Design data, obtain lay ratio, torsion angle, single line number of share of stock and the sectional dimension parameter of the true conducting wire；
Step 2 models in three-dimensional software according to the data of step 1, and obtaining core is cylindrical body, multiple simulation wire bodies
The conducting wire model in wind tunnel twisted together centered on core；
Step 3, according to the modeling of step 2 by 3D printing device along the axial layer-by-layer of the conducting wire model in wind tunnel
Printing shaping.
It preferably, is hollow cylinder by the core design in step 2.
Preferably, in step 3, the printing precision of 3D printing device is adjusted, the conducting wire wind tunnel test mould is made
The surface roughness of type is similar to true conducting wire.
Preferably, in step 3, after conducting wire model in wind tunnel cooling and shaping, in the conducting wire wind
It paints the surface spray metal of hole test model.
Beneficial effects of the present invention are as follows:
1, the present invention centered on core by being twisted into mould identical with the shape of true conducting wire for multiple simulation wire bodies
Type guarantees the consistency of model and true conducting wire, obtains accurate, only Shape Coefficient related with conducting wire shape wind tunnel test
As a result；Core of the invention uses cylindrical body, plays connection and supporting role, has straight central axes, solves and really lead
Line central axes as caused by its flexibility not in the same horizontal line the problem of, facilitate test；And core and mould of the invention
Quasi- wire body bonding can prevent from guaranteeing that model is consistent with the shape of true conducting wire using test error caused by other attachment devices；
In addition, model of the invention uses hot melt plastic material, and it is easy to form, facilitate production, and the weight ratio after cooling and shaping is true
Real conducting wire is light, has certain rigidity, facilitates and tested.
2, core of the invention is hollow cylinder, can further mitigate the weight of model, facilitate test.Since core is to mould
Quasi- wire body plays the role of support and connection, and simulation wire body is solid, has certain weight, therefore, the radius-thickness ratio of core
Not less than 1/10, prevent core thickness too small and broken.The present invention by 3D printing technique, make model can 1:1 reduction really lead
Line, and the error of manufacturing process can be reduced, reduce bad product rate.
Detailed description of the invention
Fig. 1 is the first visual angle schematic diagram of the conducting wire model in wind tunnel of embodiment.
Fig. 2 is the second visual angle schematic diagram of the conducting wire model in wind tunnel of embodiment.
Fig. 3 is the end view of the conducting wire model in wind tunnel of embodiment.
Appended drawing reference is as follows:
1- core, 2- simulate wire body.
Specific embodiment
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1 to Fig. 3, the conducting wire model in wind tunnel of the present embodiment includes core 1 and multiple simulation wire bodies 2, core 1
For cylindrical body, the outer surface for simulating wire body 2 is Nian Jie with the outer surface of core 1, and multiple simulation wire bodies 2 are twisted centered on core 1
Model identical with the shape of true conducting wire is formed together, and core 1 and simulation wire body 2 are hot melt plastic material body.This
Embodiment by the way that multiple simulation wire bodies 2 are twisted into model identical with the shape of true conducting wire centered on core 1, model with
The direction of lay of true conducting wire is overlapped, and lay ratio and windup-degree having the same guarantee the consistency of model and true conducting wire,
Obtain accurate, only Shape Coefficient related with conducting wire shape results of wind tunnel；The core 1 of the present embodiment uses cylinder
Body plays connection and supporting role, has straight central axes, solves true conducting wire central axes as caused by its flexibility not
In the same horizontal line the problem of, facilitates test；And 1 body of core of the present embodiment and simulation wire body 2 are bonded, and can prevent from using it
Test error caused by his attachment device guarantees that model is consistent with the shape of true conducting wire；In addition, model of the invention is using warm
Fusibleness plastic material, it is easy to form, facilitate production, and the true conducting wire of weight ratio after cooling and shaping is light, there is certain rigidity,
Facilitate and is tested.
Further, core 1 is hollow cylinder, can further mitigate the weight of model, facilitate test.The thickness of core 1
It is not less than 1:10 with the ratio of the diameter of core 1, prevents the thickness of core 1 too small and broken.In addition, core 1 and simulation wire body 2
It is resinite, reduces production cost.
The present embodiment also provides a kind of production method of above-mentioned conducting wire model in wind tunnel, includes the following steps:
Step 1 is scanned the true conducting wire for needing to carry out wind tunnel test, measures or setting according to true conducting wire
It counts, obtains lay ratio, torsion angle, single line number of share of stock and the sectional dimension parameter of true conducting wire；
Step 2 models in three-dimensional software according to the data of step 1, and obtaining core 1 is cylindrical body, multiple artificial lines
The model that body 2 is twisted together centered on core 1, and core 1 is designed as hollow cylinder；
Step 3, according to the modeling of step 2 by 3D printing device along the axial successively printing of conducting wire model in wind tunnel
Molding.The printing precision for adjusting 3D printing device, keeps the surface roughness of conducting wire model in wind tunnel similar to true conducting wire.And
And after the cooling and shaping of conducting wire model in wind tunnel, painted in the surface spray metal of conducting wire model in wind tunnel, the present embodiment is logical
It crosses and passes through hollow core 1, rotary core 1 with stock, while spraying metallic paint, guarantee spraying uniformly, metal paint layer can make to simulate
Further simulate the surface roughness of true conducting wire.
The production method of the conducting wire model in wind tunnel of the present embodiment by 3D printing technique, make model can 1:1 reduction it is true
Real conducting wire, and can avoid production core 1 respectively and simulate the problem during the two is bonded by wire body 2 again, reduce system
Make the error of process, reduces bad product rate.
To sum up, the present embodiment centered on core 1 by being twisted into the shape phase with true conducting wire for multiple simulation wire bodies 2
Same model guarantees the consistency of model and true conducting wire, obtains accurate, only Shape Coefficient related with conducting wire shape wind
Hole test result；The core 1 of the present embodiment uses cylindrical body, plays connection and supporting role, has straight central axes, solves
True conducting wire central axes as caused by its flexibility not in the same horizontal line the problem of, facilitate test；And the present embodiment
1 body of core and simulation wire body 2 be bonded, can prevent from guaranteeing model using test error caused by other attachment devices and really leading
The shape of line is consistent；In addition, model of the invention uses hot melt plastic material, and it is easy to form, facilitate production, and be cooled and shaped
The true conducting wire of weight ratio afterwards is light, has certain rigidity, facilitates and tested.In addition, the present embodiment also provides a kind of utilization
The production method that 3D printing technique makes conducting wire model in wind tunnel, can reduce bad product rate.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement is also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of conducting wire model in wind tunnel, which is characterized in that including core and multiple simulation wire bodies, the core is cylinder
The outer surface of body, the simulation wire body is Nian Jie with the outer surface of the core, during multiple simulation wire bodies with the core are
The heart twists together to form model identical with the shape of true conducting wire, and the core and the simulation wire body are hot melt modeling
Glue material Material.
2. conducting wire model in wind tunnel according to claim 1, which is characterized in that the core is hollow cylinder.
3. conducting wire model in wind tunnel according to claim 2, which is characterized in that the thickness of the core is straight with the core
The ratio of diameter is not less than 1:10.
4. conducting wire model in wind tunnel according to claim 1, which is characterized in that the core and the simulation wire body are tree
Rouge body.
5. a kind of production method of conducting wire model in wind tunnel as claimed in claim 1, which comprises the steps of:
Step 1 is scanned the true conducting wire for needing to carry out wind tunnel test, measures or setting according to the true conducting wire
It counts, obtains lay ratio, torsion angle, single line number of share of stock and the sectional dimension parameter of the true conducting wire；
Step 2 models in three-dimensional software according to the data of step 1, and obtaining core is cylindrical body, multiple simulation wire bodies with core
The conducting wire model in wind tunnel twisted together centered on body；
Step 3, according to the modeling of step 2 by 3D printing device along the axial successively printing of the conducting wire model in wind tunnel
Molding.
6. the production method of conducting wire model in wind tunnel according to claim 5, which is characterized in that, will be described in step 2
Core design is hollow cylinder.
7. the production method of conducting wire model in wind tunnel according to claim 5, which is characterized in that in step 3, adjust 3D
The printing precision of printing equipment keeps the surface roughness of the conducting wire model in wind tunnel similar to true conducting wire.
8. the production method of conducting wire model in wind tunnel according to claim 5, which is characterized in that in step 3, to described
After conducting wire model in wind tunnel is cooled and shaped, painted in the surface spray metal of the conducting wire model in wind tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729958.7A CN110375949B (en) | 2019-08-08 | 2019-08-08 | Wire wind tunnel test model and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729958.7A CN110375949B (en) | 2019-08-08 | 2019-08-08 | Wire wind tunnel test model and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375949A true CN110375949A (en) | 2019-10-25 |
| CN110375949B CN110375949B (en) | 2024-07-02 |
Family
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