CN205228766U - Colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model - Google Patents
Colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model Download PDFInfo
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- CN205228766U CN205228766U CN201520904974.2U CN201520904974U CN205228766U CN 205228766 U CN205228766 U CN 205228766U CN 201520904974 U CN201520904974 U CN 201520904974U CN 205228766 U CN205228766 U CN 205228766U
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Abstract
The utility model discloses a colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model, including body and the link of setting at the body both ends, the link is from interior to being elastic layer and superficial layer outward, and elastic layer and superficial layer adopt integrated into one piece, the body is from interior to including elastic layer, rigid layer and superficial layer outward in proper order, and elastic layer and superficial layer adopt integrated into one piece, the superficial layer is the nonferrous layer, the external diameter of body is unanimous with the external diameter of link, and the internal diameter of body is unanimous with the internal diameter of link, body and link integrated into one piece, and the body sets up the smooth film of one deck with the internal surface of link. The utility model discloses elasticity is high, easily operates, can guarantee the air permeability and the gas tightness of model pressure measurement pipeline, and the color is various, easily distinguishes, and than improving degree of distinguishing in ordinary pressure -measuring pipe transparent, that elasticity is little, this pressure -measuring pipe price / performance ratio is higher. Simultaneously, compare in import high elasticity pressure -measuring pipe, a large amount of experimental funds can be saved under the result of use on an equal basis to this pressure -measuring pipe low price.
Description
Technical field
The present invention relates to wind tunnel test field, specifically relate to the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model.
Background technology
In wind tunnel test, utilize the surperficial pressurized situation of the pressure tap measurement model of model surface in flow field, for strength of aircraft design provides raw data.The type test is called that wind tunnel pressure measuring is tested.Low-speed wind tunnel pressure measuring model size generally increases than high-speed wind tunnel pressure measuring model size, surface pressure tap quantity is not from tens to several thousand etc., need to carry out aeration and airtight test to piezometric tube before wind tunnel test, if calculated with 2,000 piezometric tube, aeration and airtight test need of work connecting hose amount to 4,000 times, workload is quite large, and efficiency is not high, and this is also one of principal element always perplexing wind tunnel test progress.About piezometric tube, be all the flexible pipe at pharmaceuticals's customization internal diameter certain size, this flexible pipe is exactly conventional transparent hose of having an intravenous drip in hospital on the market, and this flexible pipe does not have elasticity in the past, very hard with when on wind tunnel pressure measuring model, steel pipe is connected, and elapsed time.In recent years, country's different model aviation aircraft design, aerospacecraft design, automobile wind carry the task such as test, buildings load test and get more and more, wind tunnel test task abnormity is heavy, for improving the preparation efficiency of test on ground, often take to buy external a kind of Special pressure measuring pipe, not only purchase the cycle long, and expensive.Therefore be badly in need of the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel, improve wind tunnel test ground and prepare efficiency, save time cost and material cost.
Summary of the invention
The object of the invention is to provide a kind of cheap in the present case, there is certain rigid and flexible colored piezometric tube, to meet wind tunnel test requirement.
For achieving the above object, the present invention adopts following technical scheme:
The special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model, comprises body and the link being arranged on body two ends;
Described link is elastic layer and superficial layer from the inside to the outside, and described elastic layer and superficial layer adopt one-body molded;
Described body comprises elastic layer, rigid layer and superficial layer from the inside to the outside successively, and described elastic layer and superficial layer adopt one-body molded;
Described superficial layer is nonferrous layer;
The external diameter of described body is consistent with the external diameter of link, and the internal diameter of body is consistent with the internal diameter of link,
Described body and link one-body molded, the inside surface of described body and link arranges one deck smooth film.
In technique scheme, described elastic layer comprises thermoplastic elastomer.
In technique scheme, described thermoplastic elastomer includes gel.
In technique scheme, described rigid layer comprises one or more potpourris in nylon, tygon, polypropylene, adjudicate two cases together ethene and polycarbonate.
In technique scheme, described superficial layer comprises pigment and base material, described base material be adjudicate two cases together ethene or polyurethane any.
In technique scheme, the ratio of described base material and pigment is between 98:2 ~ 99:1.
In technique scheme, the internal diameter of piezometric tube is 0.7mm, and external diameter is 2mm ~ 2.2mm.
In technique scheme, the superficial layer of piezometric tube is 0.1mm, and the rigid layer thickness of body is 0.15mm ~ 0.35mm, and the thickness of elastic layer is 0.2mm ~ 0.4mm.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
Elasticity is high, is easy to operation, improves service efficiency.Compared with the piezometric tube that normal transparent, elasticity are little, be very easy to during fastener for connection on this piezometric tube and pressure measuring model, even if connect over thousands of piezometric tube continuously, all can not hinder hand, embody the advantage of high resiliency characteristic.Particularly for the full machine pressure measuring model of low-speed wind tunnel, need two over thousands of piezometric tube at most, in this situation, adopt high resiliency piezometric tube can save the time of pressure measuring model preparation link more than 50%.
Good springiness, ensures aeration and the impermeability of model pressure measurement pipeline better.In the past in pressure measuring model assembly working, occasional occurs that part piezometric tube disconnects phenomenon in junction and model steel pipe, and reason is that common piezometric tube elasticity is poor, causes connection not tight.After adopting high resiliency piezometric tube, show draw tighter and tighter, the characteristic of difficult drop-off, further ensure aeration and the impermeability of pipeline.
Color is various, is easy to identification, improves identification.For the full machine pressure measuring model of low-speed wind tunnel large scale, on each parts of aircraft, pressure tap is many and arrangement is mixed and disorderly, adopt different parts to arrange the method for different colours piezometric tube, one is the identification that can strengthen each parts piezometric tube in preliminary work, is conducive to improving test and prepares efficiency; Two is can improve because the phenomenons such as piezometric tube comes off cause dismounting model to investigate the work efficiency of problem.
Compared to normal transparent, piezometric tube that elasticity is little, this piezometric tube cost performance is higher.Meanwhile, compared to import high resiliency piezometric tube, this piezometric tube low price, can save lot of experiments funds under equal result of use.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the structural representation of tube wall of the present invention;
Wherein: 1 is elastic layer, 2 is superficial layers, and 3 is rigid layers.
Embodiment
As shown in Figure 1, piezometric tube of the present invention is made up of two parts, and a part is body, body is divided into three layers, is followed successively by elastic layer, rigid layer and superficial layer from the inside to the outside, is respectively arranged with link at body two ends, link has two-layer, and internal layer is elastic layer, and outside is superficial layer.Superficial layer is nonferrous layer, and color adopts the surface of a pipe to be a kind of color.The external diameter of whole piezometric tube is between 2mm to 2.2mm, and the internal diameter of piezometric tube is 0.7mm, the internal diameter size of piezometric tube is just in time with to need the external diameter at the position be connected consistent, during use, the link of piezometric tube is inserted into connecting portion, by the tension force of elastic layer, connecting portion is inserted in piezometric tube completely, and elastic layer is outwards strutted, piezometric tube and connecting portion are connected as one firmly.
Embodiment one:
Elastic layer adopts thermoplastic elastomer, comprises a certain proportion of gel, by cooling forming after heating and melting in thermoplastic elastomer; And rigid layer selects one or more potpourris of nylon, tygon, polypropylene, adjudicate two cases together ethene and polycarbonate, by hot-forming, make rigid layer in use whole piezometric tube also there is certain rigidity having under flexible effect, that is under the effect being subject to external force, whole piezometric tube can not cause because of extruding in pipe passage be truncated; And be nonferrous layer at superficial layer, mixed and layer by pigment and base material, polyurethane selected by base material, in order to not affect the elasticity of whole superficial layer, therefore the ratio of pigment and polyurethane is 1:99, by adjudicate two cases together ethene is melted for add after liquid state pigment carry out uniform stirring after shaping at Hot-press cooling.
The specific process of whole piezometric tube is, first elastic layer is processed, undertaken being processed into elastic layer by existing tube-pulling craft and be divided into body and link two parts, the elastic layer processing thickness of link is 0.2mm, the elastic layer processing thickness of body is 0.1mm, then by the technique of extruding, rigid layer is expressed to elastic layer surface, the thickness of rigid layer is 0.35mm; The outside surface finally superficial layer being expressed to whole body and link by the technique of thermoplastic extrusion is again naturally shaping, and the thickness of whole piezometric tube is 0.65mm.
Because the scope that piezometric tube uses, so be not affected in order to the gas ensured in piezometric tube flows, pass through in the trombone slide process of elastic layer at the processing initial stage, one deck smooth film is plated at the inwall of elastic layer by the form of plated film, make the inner wall smooth of whole piezometric tube, to ensure in process of the test and can high-precision air pressure be tested.
Embodiment two:
On the basis of embodiment one, the component of elastic layer is constant, and rigid layer chooses adjudicate two cases together ethene, and adjudicate two cases together ethene is also chosen on the basis of superficial layer, and the ratio of pigment and adjudicate two cases together ethene is 2:98.
The specific process of whole piezometric tube is, first elastic layer is processed, undertaken being processed into elastic layer by existing tube-pulling craft and be divided into body and link two parts, the elastic layer processing thickness of link is 0.4mm, and the elastic layer processing thickness of body is 0.15mm; By the body of piezometric tube and the superficial layer of link disposable extruded, the rigid layer of body and the superficial layer of body are integrated, and material is identical.Same plates one deck smooth film at the inwall of elastic layer.
The present invention is before reality processing, after it should be noted that machine preheating half an hour, when preheating according to conduit adjusted size die orifice, the core rod of required processing, setting barrel wise temperature and feeding speed, after each section of temperature reaches predetermined value, start to try pull catheter, treat conduit pull-out post-equalization verticality, chilled water is shaped, through traction engine, whether inspection conduit size and outward appearance meet drawing requirement, and according to the factors such as room temperature, material, adjust each section of temperature and rotating speed.Machine run speed should be kept a close eye in whole process and change of heating, ensure conduit quality.Its concrete size need customize according to model in wind tunnel demand, is mainly used in the model manometric tests such as aerospace flight vehicle in low-speed wind tunnel, bridge, automobile.This piezometric tube is verified through multinomial wind tunnel test, and aeration, impermeability all meet testing requirements.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (7)
1. the special high-elastic colour piezometric tube of low-speed wind tunnel test model, comprises body and the link being arranged on body two ends, it is characterized in that;
Described link is elastic layer and superficial layer from the inside to the outside, and described elastic layer and superficial layer adopt one-body molded;
Described body comprises elastic layer, rigid layer and superficial layer from the inside to the outside successively, and described elastic layer and superficial layer adopt one-body molded;
Described superficial layer is nonferrous layer;
The external diameter of described body is consistent with the external diameter of link, and the internal diameter of body is consistent with the internal diameter of link,
Described body and link one-body molded, the inside surface of described body and link arranges one deck smooth film.
2. the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model according to claim 1, is characterized in that described elastic layer comprises thermoplastic elastomer.
3. the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model according to claim 2, is characterized in that described thermoplastic elastomer includes gel.
4. the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model according to claim 1, is characterized in that described rigid layer comprises one or more potpourris in nylon, tygon, polypropylene, adjudicate two cases together ethene and polycarbonate.
5. the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model according to claim 1, is characterized in that described superficial layer comprises pigment and base material, described base material be adjudicate two cases together ethene or polyurethane any.
6., according to the described special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model arbitrary in Claims 1 to 5, it is characterized in that the internal diameter of piezometric tube is 0.7mm, external diameter is 2mm ~ 2.2mm.
7. the special high-elastic colour piezometric tube of a kind of low-speed wind tunnel test model according to claim 6, it is characterized in that the surface layer thickness of piezometric tube is 0.1mm, the rigid layer thickness of body is 0.15mm ~ 0.35mm, and the thickness of elastic layer is 0.2mm ~ 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520904974.2U CN205228766U (en) | 2015-11-13 | 2015-11-13 | Colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520904974.2U CN205228766U (en) | 2015-11-13 | 2015-11-13 | Colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228766U true CN205228766U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520904974.2U Expired - Fee Related CN205228766U (en) | 2015-11-13 | 2015-11-13 | Colored pressure -measuring pipe of special high elasticity of low -speed wind tunnel test model |
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|---|---|
| CN (1) | CN205228766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258911A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Special-purpose high-elasticity color piezometric tube for low speed wind tunnel test model |
-
2015
- 2015-11-13 CN CN201520904974.2U patent/CN205228766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258911A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Special-purpose high-elasticity color piezometric tube for low speed wind tunnel test model |
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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: 20160511 Termination date: 20181113 |