CN204083668U - High vacuum insulated tubing heat insulating construction - Google Patents
High vacuum insulated tubing heat insulating construction Download PDFInfo
- Publication number
- CN204083668U CN204083668U CN201420543060.3U CN201420543060U CN204083668U CN 204083668 U CN204083668 U CN 204083668U CN 201420543060 U CN201420543060 U CN 201420543060U CN 204083668 U CN204083668 U CN 204083668U
- Authority
- CN
- China
- Prior art keywords
- aluminium foil
- reflecting screen
- high vacuum
- interlayer
- heat insulating
- 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 - Lifetime
Links
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000005030 aluminium foil Substances 0.000 claims abstract description 24
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 239000011152 fibreglass Substances 0.000 claims abstract description 19
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 239000011229 interlayer Substances 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000009413 insulation Methods 0.000 abstract description 11
- 238000002310 reflectometry Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 238000007872 degassing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model is a kind of high vacuum insulated tubing heat insulating construction, comprises aluminium foil, fiberglass gridding cloth, it is characterized in that, aluminium foil is sewed up by glass fiber and fiberglass gridding cloth, and aluminium foil is provided with hole; The beneficial effects of the utility model are: 1) structure is simple, and little on degree of vacuum impact, good heat-insulation effect, can improve the working life of high vacuum oil pipe; 2) fiberglass gridding cloth and aluminium foil sew up and can prevent from, because displacement produces short circuit between aluminium foil, can also keeping the flatness of aluminium foil preferably, improve aluminium foil reflectivity; 3) degree of vacuum in high vacuum oil pipe can be improved in the hole on aluminium foil, improves effect of heat insulation.
Description
Technical field
The utility model relates to a kind of high vacuum insulated tubing heat insulating construction.
Background technique
High vacuum insulated tubing is the important equipment of Thermal Recovery For Viscous Oil By Steam, its purposes injects the steam of High Temperature High Pressure, because steam and periphery mining environment exist temperature contrast, and also produce surface friction drag during vapor flow, so the consume of heat energy must be had in this process, insulated tubing has higher heat-shielding performance, therefore oil well casing and cementing concrete ring can be protected from thermal stress damage, and pit shaft thermodynamic loss can be reduced, improve the effect of steam injection and oil recovery, pipe in many employings of traditional insulated tubing, carry out heat insulation after outer tube vacuumizes, after also have at interior pipe, thermal-protective material is provided with between outer tube, such as publication number is CN202580494U, publication date be on December 5th, 2012 name be called the Chinese utility model patent of novel pre-stressed high vacuum insulated tubing, it discloses a kind of comprise welded seal connect outer tube and interior pipe, outer tube is provided with bleeder hole, outer tube, inner thermal insulator is provided with between interior pipe, disclosed thermal-protective material can select any existing thermal-protective material, such as asbestos, Problems existing is, common thermal-protective material is due to material of exitting containing moisture or other, if bakeout degassing is not thorough, degree of vacuum in heat insulating tube using process can be made to reduce.
Model utility content
The utility model provides a kind of structure simple, little on degree of vacuum impact, good heat-insulation effect, the high vacuum insulated tubing heat insulating construction of long service life.
For solving the problem, the utility model adopts following technological scheme:
A kind of high vacuum insulated tubing heat insulating construction, comprise reflecting screen, interlayer, reflecting screen is smooth to be located on interlayer, and reflecting screen is provided with micropore.
High vacuum insulated tubing comprises interior pipe, outer tube, interior pipe outer tube are welded into seal chamber by end socket, and reflecting screen is smooth to be located on interlayer, and reflecting screen is provided with micropore, and reflecting screen and interlayer are wound around on inner pipe again; After vacuumizing, improve the conduction of heat in pipe, improve effect of heat insulation.For preventing the Contact of reflecting screen from causing short circuit, reflecting screen is kept apart by needs interlayer, adopts reflecting screen and interlayer compound, is located on interlayer, prevents the Contact of reflecting screen after being rolled onto heat insulating tube, prevent hot short circuit by reflecting screen, improves effect of heat insulation; In addition, be fold in order to reduce on reflecting screen by smooth for reflecting screen being located on interlayer, improve reflecting screen surface flatness, heat reflectivity can be improved to a great extent, improve heat-insulating efficiency and reach more than 80%.
In addition in order to improve heat insulating tube manufacture and the degree of vacuum in using in the future, when vacuumizing, air in the reflecting screen be tightly entangled on heat insulating tube, interlayer is drained only, gas clean-up, reflecting screen evenly arranges micropore, micropore can be various shape, as circular hole, square, oval, stamp or corrugated, the quantity of micropore is as the criterion can be evenly distributed on reflecting screen.
Interlayer is due to material difference, can containing moisture or other venting materials, it is gas clean-up and working life during manufacture heat insulating tube, need to carry out high-temperature baking to reflecting screen and interlayer, to remove the compositions such as the organic substance of its moisture and attachment, interlayer through high-temperature baking there will be fluffy, hard, crisp phenomenon, and reflecting screen also can strengthen the intensity of interlayer conversely, thus prevents fluffy, crisp, the hard phenomenon of interlayer from result in the hot short circuit phenomenon of reflecting screen.
Wherein, reflecting screen is aluminium foil, and aluminum foil thickness is 0.01-0.04mm.As the reflecting screen of reflecting heat, requirement must have higher reflectivity and lower emissivity, for effectively reflecting hot-fluid, reflecting screen must have higher degree of finish and reflecting screen smooth be located on interlayer, for reducing reflecting screen self heat absorption, require that reflecting screen must be very thin, find that aluminium foil is the comparatively ideal material as reflecting screen through repetition test, the thickness of aluminium foil determines heat conductivity, thickness is thicker can increase heat conductivity, then thinner thickness can reduce again tensile strength and easily ruptures, pull, through claimant's repetition test, discovery thickness is the aluminium foil of 0.01-0.04mm is suitable reflecting screen.
Wherein, interlayer is fiberglass gridding cloth, and the pitch-row of fiberglass gridding cloth is 2-10mm.
Glass fibre grid cloth is for interweaving or plain weave structure, preferably pilotaxitic texture, one of effect of fiberglass gridding cloth is the short circuit prevented between aluminium foil, effect of heat insulation is caused to reduce, through repetition test, be that the fiberglass gridding cloth of the interwoven textile of 2-10mm is more suitable for aluminium foil and is combined into insulation material layer in insulated tubing by pitch-row.
Wherein, reflecting screen is sewed up by glass fiber and interlayer.
Reflecting screen and interlayer can adopt and directly stack mode compound, namely do not adopt other materials or object to help directly to be superimposed together.
When being wrapped on heat insulating tube, compact in order to what be wound around, manual mode glass fiber can be adopted reflecting screen and interlayer to be sewed up in the edge portion of reflecting screen and interlayer or other positions, what need specified otherwise is, should avoid between reflecting screen and interlayer adopting gluing mode to carry out compound, because glue contains various organic compound, can there is chemical change when high-temperature baking in this chemical substance, and residual carbon compound can affect the degree of vacuum in heat insulating tube.
In addition, in order to increase the toughness of glass fibre in fiberglass gridding cloth production, it adds a large amount of softeners in producing, glass fibre hygroscopicity is strong simultaneously, water content is high, if bakeout degassing technology controlling and process is lack of standardization, in the manufacture and use later of insulated tubing, degree of vacuum can be declined, affect effect of heat insulation, therefore need to carry out drying process before fiberglass gridding cloth is put into heat insulating tube, stoving temperature is generally more than 350 degree, temperature is increased to 450 degree to improve degassing efficiency by some producers, degasification time general 4-8 hour, because the evaporation of softener and moisture causes fiberglass gridding cloth to become fluffy, to occur hard, crisp phenomenon, artificial or the mechanical stretching in Wrapping technical and winding action cannot be realized, therefore the present invention adopts fiberglass gridding cloth and aluminium foil glass fiber to make all-in-one-piece structure, fiberglass gridding cloth and aluminium foil are sewed up or direct combination mode, and put into apparatus for baking degasification simultaneously, improve heat-shielding performance on the one hand, the superpower ductility of aluminium foil can also be utilized on the other hand, ensure that the realization of fiberglass gridding cloth wrapping heat insulating tube technique, aluminium foil is relative with grid cloth position fixing, can not because of under the effect of self gravitation and external force, produce relative displacement, thus " short circuit " between aluminium foil and aluminium foil can not be produced after multilayer binding, solid contact heat conductivity is made to reach minimum, sew up as fiberglass gridding cloth and aluminium foil being sewed up with glass fiber, graticule mode can be adopted to sew up, also warp or parallel either type can be selected to sew up, also the mode do not sewed up at non-key position can be sewed up by key position, such as adopt and have sewing up of spacing.
High vacuum insulated tubing comprises interior pipe, outer tube, interior pipe, outer tube end seal welding, outer tube is provided with bleeder hole, the thermoinsulation material structure that outer wall of inner tube wrapped multiple is sewed up by aluminium foil, fiberglass gridding cloth, parcel the number of plies with 5-50 layer for optimum, in order to the gas conduction between further reduction layer, fiberglass gridding cloth adds a small amount of getter material, getter material can adopt zirconium ferrovanadium dust material.Its effect absorbs air in heat insulating tube or other gas further, improves the degree of vacuum in heat insulating tube.
Advantage of the present utility model is: 1) structure is simple, and little on degree of vacuum impact, good heat-insulation effect, can improve the working life of high vacuum oil pipe; 2) reflecting screen is smooth is located at the surface flatness that interlayer can improve reflecting screen, improves heat reflectivity, strengthens effect of heat insulation; 3) degree of vacuum in insulated tubing can be improved in the hole on reflecting screen, improves effect of heat insulation; 4) interlayer and reflecting screen sew up and can prevent from, because displacement produces short circuit between reflecting screen, can also keeping the flatness of reflecting screen preferably, improve the reflectivity of reflecting screen.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is structural representation of the present utility model;
In figure, 1, reflecting screen, 2, interlayer, 3, glass fiber, 4, micropore, 5, interior pipe.
Embodiment
As Fig. 1, shown in 2, a kind of high vacuum insulated tubing heat insulating construction, comprise reflecting screen 1, interlayer 2, in order to prevent the short circuit phenomenon between reflecting screen 1, interlayer 2 adopts intertexture form woven, the pitch-row of interlayer 2 is preferably 5mm, reflecting screen 1 is sewed up by glass fiber 3 and the joint of interlayer 2 in being just wound around during pipe, in order to gas clean-up reflecting screen 1 being evenly provided with multiple micropore 4, in order to reduce heat conductivity and to make reflecting screen 1 have good tensile strength preferred reflecting screen 1 thickness be 0.02mm, the thermoinsulation material that reflecting screen 1 and interlayer 2 combine is wrapped on the interior pipe 5 of high vacuum insulated tubing.
Preferred reflecting screen 1 material is aluminium foil, and preferred interlayer 2 material is fiberglass gridding cloth.
Claims (4)
1. high vacuum insulated tubing heat insulating construction, is characterized in that, comprises reflecting screen, interlayer, and reflecting screen is smooth to be located on interlayer, and reflecting screen is provided with micropore.
2. high vacuum insulated tubing heat insulating construction according to claim 1, is characterized in that, reflecting screen is aluminium foil, and aluminum foil thickness is 0.01-0.04mm.
3. high vacuum insulated tubing heat insulating construction according to claim 1 and 2, is characterized in that, interlayer is fiberglass gridding cloth, and the pitch-row of fiberglass gridding cloth is 2-10mm.
4. high vacuum insulated tubing heat insulating construction according to claim 1, is characterized in that, reflecting screen is sewed up by glass fiber and interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543060.3U CN204083668U (en) | 2014-09-12 | 2014-09-12 | High vacuum insulated tubing heat insulating construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543060.3U CN204083668U (en) | 2014-09-12 | 2014-09-12 | High vacuum insulated tubing heat insulating construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083668U true CN204083668U (en) | 2015-01-07 |
Family
ID=52176389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420543060.3U Expired - Lifetime CN204083668U (en) | 2014-09-12 | 2014-09-12 | High vacuum insulated tubing heat insulating construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083668U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107571811A (en) * | 2017-09-18 | 2018-01-12 | 张家港保税区通勤精密机械有限公司 | A kind of composite pad that noise reduction is thermally shielded to engine |
| CN108883594A (en) * | 2017-03-15 | 2018-11-23 | 诺维尔里斯公司 | Corrugated Thermal protection pipe fitting and its manufacturing method |
-
2014
- 2014-09-12 CN CN201420543060.3U patent/CN204083668U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108883594A (en) * | 2017-03-15 | 2018-11-23 | 诺维尔里斯公司 | Corrugated Thermal protection pipe fitting and its manufacturing method |
| CN108883594B (en) * | 2017-03-15 | 2021-10-08 | 诺维尔里斯公司 | Corrugated thermal protection tube and method of making same |
| CN107571811A (en) * | 2017-09-18 | 2018-01-12 | 张家港保税区通勤精密机械有限公司 | A kind of composite pad that noise reduction is thermally shielded to engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |