CN203115397U - Direct-buried steam conveying pipeline - Google Patents
Direct-buried steam conveying pipeline Download PDFInfo
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- CN203115397U CN203115397U CN 201220650439 CN201220650439U CN203115397U CN 203115397 U CN203115397 U CN 203115397U CN 201220650439 CN201220650439 CN 201220650439 CN 201220650439 U CN201220650439 U CN 201220650439U CN 203115397 U CN203115397 U CN 203115397U
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- insulating layer
- steam conveying
- thermal insulation
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Abstract
The utility model discloses a direct-buried steam conveying pipeline, comprising an inner working pipe, an insulating layer and an outer protecting pipe, wherein a fixed component is arranged between the insulating layer and the outer protecting pipe; the insulating layer comprises an outer insulating layer and an inner insulating layer; the outer insulating layer is a centrifugal glass-cotton insulating layer; and the inner insulating layer is a silicon-dioxide aerogel insulating layer. Compared with the prior art, the direct-buried steam conveying pipeline disclosed by the utility model has the following advantages that a composite insulating cotton felt made of silicon-dioxide aerogel is low in heat conductivity coefficient and extremely good in insulating performance, so that the heat loss in the steam conveying process is greatly reduced, and the steam conveying distance is increased; the size of the caliber of the outer protecting pipe is greatly reduced, and the space utilization rate is increased; and the insulating layer has a nano porous structure, and the distance between every two pores is less than the size of water molecule, so that the waterproof performance is extremely good, the penetration of water can be avoided at the most extent in the pipe construction stage, further the corrosion condition of the working pipe is reduced, and the service life of the pipeline is prolonged.
Description
Technical field
The utility model relates to the steam conveying technology, relates in particular to a kind of directly buried type steam conveying pipe.
Background technique
At present, take directly buried type to carry for the transporting pattern majority of steam in the existing concentrated thermoelectric field.With reference to figure 1; in the prior art; the following structure of the general employing in directly buried type steam output pipe road: the interior working pipe 10 that sets gradually from inside to outside, thermal insulation layer 20, wrapping galvanized wire (not shown), outer protective tube 30; wherein interior working pipe 10 adopts seamless steel pipe or double-submerged arc helix seam welded steel pipe etc.; and thermal insulation layer more than 20 is with thermal insulating materials such as high temperature resistant centrifugally glass-wool, alumina silicate needle punched blankets, and 30 of outer protective tubes adopt helix seam welded steel pipe etc.
The directly buried type steam conveying pipe of prior art has following shortcoming:
1. thermal insulation layer adopts single thermal insulating material, and the thermal insulating material thermal insulation property of choosing usually is not good, for the high temperature of steam medium in the ability pipeline, must guarantee that insulation layer thickness is enough big, causes outer protective tube diameter needs correspondingly to strengthen, and causes cost to improve;
2. because insulation layer thickness is big, its external surface area correspondingly big, radiating efficiency is big, causes heat loss to strengthen;
3. the bore of outer protective tube is excessive, causes pipeline to take up room and becomes big, and this problem shortcoming when occasion channellings such as on-site piping lane is particularly outstanding.
The model utility content
The utility model provides a kind of directly buried type steam conveying pipe in order to solve the above-mentioned deficiency of prior art.
Above-mentioned purpose of the present utility model realizes by following technological scheme: a kind of directly buried type steam conveying pipe; comprise interior working pipe, thermal insulation layer and outer protective tube; be provided with fixing-assembly between described thermal insulation layer and the outer protective tube; it is characterized in that: described thermal insulation layer includes external thermal insulation and inner thermal insulating layer; wherein; described external thermal insulation is the centrifugally glass-wool thermal insulation layer, and described inner thermal insulating layer is the aerosil thermal insulation layer.
Preferably, described aerosil thermal insulation layer is the cotton felt of aerosil composite heat preserving and thermal insulating.
Preferably, be provided with thermal reflecting coating between described inner thermal insulating layer and the external thermal insulation.
Preferably, described thermal reflecting coating is aluminium foil glass cloth.
Preferably, described fixing-assembly is Stainless Steel Band.
Preferably, described interior working pipe is steel pipe.
Preferably, described outer protective tube is steel pipe.
Compared with prior art, the utlity model has following advantage:
1. the thermal conductivity of the cotton felt of aerosil composite heat preserving and thermal insulating is low, and thermal insulation property is fabulous, has significantly reduced the heat loss in the steam course of conveying, increases the steam fed distance;
2. greatly reduce outer protective tube caliber size, improved space availability ratio;
3. thermal insulation layer has nano-porous structure, and hole pitch is less than the water molecule size, thereby water-proof performance is fabulous, can at utmost avoid the infiltration of moisture in the pipeline construction stage, thereby reduces the working pipe etching condition, increases pipeline working life.
Description of drawings
Fig. 1 is the generalized section of the directly buried type steam conveying pipe of prior art.
Fig. 2 is an embodiment's of directly buried type steam conveying pipe of the present utility model generalized section.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 2; the utility model directly buried type steam conveying pipe mainly includes interior working pipe 1, thermal insulation layer 2, fixing-assembly (not shown), the outer protective tube 3 that arranges from inside to outside successively; described thermal insulation layer 2 includes external thermal insulation 21 and inner thermal insulating layer 22; wherein; described external thermal insulation 21 is the centrifugally glass-wool thermal insulation layer, and described inner thermal insulating layer 22 is the aerosil thermal insulation layer.
In addition, between inner thermal insulating layer 22 and external thermal insulation 21, also be provided with thermal reflecting coating 4.
As a mode of execution of present embodiment, described aerosil thermal insulating material is the cotton felt of aerosil composite heat preserving and thermal insulating; Interior working pipe 1 can adopt steel pipe; Thermal reflecting coating 4 can adopt tinfoil paper glass cloth; Fixing-assembly 3 can adopt Stainless Steel Band; Described outer protective tube 3 can adopt steel pipe.
The silica aerogel material that inner thermal insulating layer 22 in the present embodiment adopts is as the high temperature resistant heat-insulating material of nanometer that is mainly used in fields such as Aero-Space in the prior art, and its nano effect brings superior thermal insulation property mainly to show:
1. zero convection effect: when the hole diameter in the thermoinsulation material was closed pore perfect condition less than 50nm, thermoinsulation material gas inside molecule had just lost the macroscopic motion ability substantially, has therefore also just lost the ability of thermoconvection campaign and heat transfer by convection.
2. infinite multiaspect hides thermal effect: when the hole diameter in the thermoinsulation material reduces, the surface area of its air vent wall can sharply increase, in material, form infinite many gas---liquid/solid interfaces, thermal-radiating ray in transmittance process, can take place be close to infinite repeatedly reflection, absorption, transmission and at radiative process, thermal radiation capability is decayed rapidly, last major part is absorbed in the surface of close hot side one side of thermoinsulation material, and then returns original heat emission body in thermal-radiating mode.
The cotton felt of aerosil composite heat preserving and thermal insulating is the composite article of aerosil, its thermal insulation property is very superior, its thermal conductivity λ≤0.016W/mK under the normal temperature, the heatproof maximum can reach 650 ℃, toughness and tensile strength are preferably arranged, have very significant superiority as the thermal insulating material of thermal insulation layer in the present embodiment.
Describe the rotary glass cotton material that external thermal insulation 22 adopts in the present embodiment below in detail:
Centrifugally glass-wool is that the glass that will be in molten state carries out the filamentary material that fibrosis spraying thermosetting resin is made with centrifugal injection method technology, after handling through the heat cure deep processing, can be made into the series product that serve many purposes.It has plurality of advantages such as fire-retardant, nontoxic, corrosion-resistant, that unit weight is little, thermal conductivity is low, chemical stability is strong, hydroscopicity is low, hydrophobicity is good, is the very superior insulation of performance, heat insulation, sound absorbing material.
Centrifugally glass-wool quality softness, fiber are fine, Diazolidinyl Urea not in the construction.Thermal conductivity under its normal temperature is about 0.03W/mK, and material recommends serviceability temperature smaller or equal to 350 ℃.
During specific implementation, the visual actual demand setting of the thickness of external thermal insulation 21 and inner thermal insulating layer 22.
Present embodiment is reduced to the temperature range value that a certain satisfied outer centrifugally glass-wool heatproof requires by the cotton felt of certain thickness internal layer aerogel composite adiabatic with the outer heat transfer temperature of medium, and satisfy the relevant industries code requirement, thereby the thermal insulation property that makes inside and outside thermal insulation layer can take full advantage of separately reduces the heat loss that steam is carried, and reduce the insulating structure cost to greatest extent, simultaneously reduce the outer steel pipe specification greatly, reduce the buried size that takes up space of directly buried pipeline.
The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (7)
1. directly buried type steam conveying pipe; comprise interior working pipe, thermal insulation layer and outer protective tube; be provided with fixing-assembly between described thermal insulation layer and the outer protective tube; it is characterized in that: described thermal insulation layer includes external thermal insulation and inner thermal insulating layer; wherein; described external thermal insulation is the centrifugally glass-wool thermal insulation layer, and described inner thermal insulating layer is the aerosil thermal insulation layer.
2. a kind of directly buried type steam conveying pipe according to claim 1 is characterized in that: described aerosil thermal insulation layer is the cotton felt of aerosil composite heat preserving and thermal insulating.
3. a kind of directly buried type steam conveying pipe according to claim 1 is characterized in that: be provided with thermal reflecting coating between described inner thermal insulating layer and the external thermal insulation.
4. a kind of directly buried type steam conveying pipe according to claim 3, it is characterized in that: described thermal reflecting coating is aluminium foil glass cloth.
5. a kind of directly buried type steam conveying pipe according to claim 1, it is characterized in that: described fixing-assembly is Stainless Steel Band.
6. a kind of directly buried type steam conveying pipe according to claim 1 is characterized in that: working pipe is steel pipe in described.
7. a kind of directly buried type steam conveying pipe according to claim 1, it is characterized in that: described outer protective tube is steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650439 CN203115397U (en) | 2012-11-28 | 2012-11-28 | Direct-buried steam conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650439 CN203115397U (en) | 2012-11-28 | 2012-11-28 | Direct-buried steam conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115397U true CN203115397U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220650439 Expired - Fee Related CN203115397U (en) | 2012-11-28 | 2012-11-28 | Direct-buried steam conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559501A (en) * | 2017-09-29 | 2018-01-09 | 安徽德全新型建材科技有限公司 | A kind of safe steam conveying pipe |
| CN107795793A (en) * | 2017-11-30 | 2018-03-13 | 苏州市君悦新材料科技股份有限公司 | A kind of middle low temperature composite pipeline insulation construction |
-
2012
- 2012-11-28 CN CN 201220650439 patent/CN203115397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559501A (en) * | 2017-09-29 | 2018-01-09 | 安徽德全新型建材科技有限公司 | A kind of safe steam conveying pipe |
| CN107795793A (en) * | 2017-11-30 | 2018-03-13 | 苏州市君悦新材料科技股份有限公司 | A kind of middle low temperature composite pipeline insulation construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Direct-buried steam conveying pipeline Effective date of registration: 20140922 Granted publication date: 20130807 Pledgee: Wuxi rural commercial bank Limited by Share Ltd Yixing branch Pledgor: Jiangsu Dewei Energy Company Limited|Wuhan Dewei Engineering Technology Co Ltd Registration number: 2014990000779 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170612 Granted publication date: 20130807 Pledgee: Wuxi rural commercial bank Limited by Share Ltd Yixing branch Pledgor: Jiangsu Dewei Energy Company Limited|Wuhan Dewei Engineering Technology Co Ltd Registration number: 2014990000779 |
|
| 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: 20130807 Termination date: 20201128 |