CN202392357U - Directly-buried steam conveying pipeline - Google Patents
Directly-buried steam conveying pipeline Download PDFInfo
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- CN202392357U CN202392357U CN2011204634510U CN201120463451U CN202392357U CN 202392357 U CN202392357 U CN 202392357U CN 2011204634510 U CN2011204634510 U CN 2011204634510U CN 201120463451 U CN201120463451 U CN 201120463451U CN 202392357 U CN202392357 U CN 202392357U
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Abstract
The utility model discloses a directly-buried steam conveying pipeline which comprises an inner working pipe, a heat insulation layer and an outer protection pipe which are sequentially arranged from inside to outside, wherein the heat insulation layer comprises an outer heat insulation layer and an inner heat insulation layer; the outer heat insulation layer is a hydrophobic hard polyurethane heat insulation layer; and the inner heat insulation layer is a silica aerogel heat insulation layer. Through the utility model, the heat insulation performance can be greatly improved, the heat energy loss is reduced, the pipeline conveying cost and expenses in civil engineering, mounting and the like are lowered, and the underground space utilization rate is improved.
Description
Technical field
The utility model relates to the delivery of steam technology, relates in particular to a kind of directly buried type steam conveying pipe.
Background technique
In the steam direct-buried conveying technology of present existing thermoelectric industry; The application form of directly buried type steam conveying pipe mainly is a steel bushing steel prefabricated thermal insulation pipeline; Working pipe is steel pipe with outer protective tube promptly, and thermal insulation layer adopts high temperature resistant centrifugally glass-wool, aluminium silicate wool and goods, calcium silicate products etc.The structural type of tradition steel bushing steel direct embedment steel pipe mainly contains following two kinds:
1) inner sliding type: with reference to figure 1, working steel tube and insulating structure were thrown off in interior slip was, during the working steel tube expanded by heating; The steel pipe motion; Be subjected to displacement, and insulating structure layer and outer sleeve become an overall structure, do not produce motion; The insulating structure internal layer be resistant to elevated temperatures hard microporous calcium silicate or magnesium silicate tile fragment as thermal-protective coating, the urethane foam that outerly adopt that thermal conductivity is low, waterproof, antiseptic property is good is as thermal insulation layer.
Its shortcoming mainly contains: 1. internal layer hard heat-insulating layer is generally calcium silicate watt or magnesium silicate and watt when parcel, can produces more slit, causes inhomogeneously, and local heat dissipating capacity is bigger;
2. the hard heat-insulated layer of internal layer calcium silicate watt or magnesium silicate watt density are bigger, cause the steel jacket pipe overall weight bigger, are unfavorable for pipeline transport and lifting;
3. it is higher that its use receives the thermal conductivity of calcium silicate watt grade under the high temperature, restriction of factor such as thermal insulation property is relatively poor, and outer polyurethane thermal insulation layer heatproof is lower etc.
Above-mentioned inner sliding type directly buried type steam conveying pipe is very big to the runnability influence because of its shortcoming of case history proof, thus do not adopt basically in the prior art, and the directly buried type steam conveying pipe of outer sliding type below adopt more.
2) outer sliding type: with reference to figure 2, its structure is respectively working pipe, thermal insulation layer, air layer, outer sleeve, anticorrosive coat from inside to outside.The gap that 10～20mm is arranged between outer sleeve and the insulating structure layer; Can play certain heat insulation effect if this gap partly vacuumized; But vacuum pumping technique is regularly extracted the air in the space out with vacuum pump implementing to acquire a certain degree of difficulty and in the engineering operation process, need, and just can reach to strengthen thermal insulation property and alleviate the function of the internal corrosion of Steel Sleeve.
Its shortcoming mainly contains: 1. thermal insulation layer is mainly aluminium silicate wool and goods and centrifugally glass-wool; Mostly these thermal insulating materials are non-watertight material; Cause thermal insulation layer water inlet in construction and the transportation process easily, cause a large amount of heat losss, and reduce the thermal insulation property of thermal insulating material;
2. the thermal insulation property of thermal insulating material is not high, causes the interior working steel tube of outer sleeve specification a lot of greatly, influence transportation and underground laying.
The model utility content
The utility model technical problem to be solved is: a kind of directly buried type steam conveying pipe is provided, and this pipeline can promote thermal insulation property greatly, reduce heat energy loss, and reduces expenses such as pipeline transport cost and civil engineering, installation, improves underground space utilization ratio.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of directly buried type steam conveying pipe; Include the interior working pipe, thermal insulation layer, the outer protective tube that are provided with from inside to outside successively; Said thermal insulation layer includes external thermal insulation and inner thermal insulating layer; Wherein, said external thermal insulation is a hydrophobic hard polyaminoester thermal insulation layer, and said inner thermal insulating layer is the aerosil thermal insulation layer.
Preferably, said aerosil thermal insulating material is the cotton felt of aerosil composite heat preserving and thermal insulating.
Preferably, between said inner thermal insulating layer and external thermal insulation, also be provided with thermal reflecting coating.
Preferably, the outer surface of working pipe also is provided with the hot melting plastic film in said.
Preferably, said thermal reflecting coating is the aluminium foil thermal reflecting coating.
Preferably, said outer protective tube includes and is arranged on outer outer steel pipe of said external thermal insulation and the external anti-corrosion layer that is overlying on this outer steel pipe outer surface.
Preferably, said interior working pipe is a steel pipe.
The beneficial effect of the utility model is:
The embodiment of the utility model through refractory composite heat insulating cotton that the aerosil thermoinsulation material that is applied to fields such as Aero-Space in the existing technology is processed as inner thermal insulating layer, with the hydrophobic hard polyaminoester that is applied to relatively lower temps insulations such as hot water, air conditioner water in the existing technology as external thermal insulation; Form double-deck thermal insulation layer; Thereby improved thermal insulation property greatly, reduced heat energy loss; And reduced expenses such as pipeline transport cost and civil engineering, installation, improved underground space utilization ratio.
Below in conjunction with accompanying drawing the utility model is done further to describe in detail.
Description of drawings
Fig. 1 is the generalized section of the inner sliding type directly buried type steam conveying pipe of existing technology.
Fig. 2 is the generalized section of the outer sliding type directly buried type steam conveying pipe of existing technology.
Fig. 3 is an embodiment's of directly buried type steam conveying pipe of the utility model a generalized section.
Embodiment
Describe an embodiment of the directly buried type steam conveying pipe that the utility model provide below in detail with reference to figure 3; As shown in the figure; The utility model mainly includes interior working pipe 1, thermal insulation layer 2, the outer protective tube 3 that is provided with from inside to outside successively; Said thermal insulation layer 2 includes external thermal insulation 21 and inner thermal insulating layer 22; Wherein, said external thermal insulation 21 is a hydrophobic hard polyaminoester thermal insulation layer, and said 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; The outer surface of working pipe 1 also is provided with hot melting plastic film 5 in said.
Further, said outer protective tube 3 includes outer steel pipe that is arranged on outside the external thermal insulation 21 and the external anti-corrosion layer that is overlying on this outer steel pipe outer surface.
As an implementation of present embodiment, said 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 the aluminium foil thermal reflecting coating; Said external anti-corrosion layer can adopt 3PE or polyureas anticorrosive coat.
The silica aerogel material that inner thermal insulating layer 21 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 existing technology, 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 the closed pore perfect condition less than 50nm, thermoinsulation material gas inside molecule had just lost the macroscopic motion ability basically, 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 to 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 near hot side one side of thermoinsulation material, and then returns original heat emission body with 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≤0.02W/mK under the normal temperature; The heatproof maximum can reach 650 ℃, and toughness and tensile strength are preferably arranged, and has very significant superiority as the thermal insulating material of thermal insulation layer in the present embodiment.
The high temperature resistant hydrophobic hard foam polyurethane material that external thermal insulation 22 in the present embodiment adopts brings superior thermal insulation property mainly to show:
Because mostly hard polyurethane foam be hole-closing structure, have good characteristics such as insulation effect is good, in light weight, specific strength big, easy construction, also have characteristics such as sound insulation, shockproof, electrical insulation, heat-resisting, cold-resistant, anti-solvent simultaneously; Be widely used in the thermoinsulation material such as casing heat insulation layer, freezer, refrigerator car of refrigerator, refrigerator-freezer; Hot water and air conditioner cold water pipe insulation material, thermal conductivity λ≤0.03W/mK under its normal temperature, compressive strength is more than or equal to 0.3MPa; Water-proof performance is good; 100 ℃ of boiling water soak 90 minutes water absorption rate≤10%, and for a long time high-temperature resistant reaches 110 ℃, and peak temperature can reach 130 ℃; Through compound insulation structure, the aerogel thermal insulation layer of internal layer can be reduced to polyurethane safe handling scope with temperature fully.
During concrete the realization, the visual actual demand setting of 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 hydrophobic hard polyaminoester heatproof requires through 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 make inside and outside thermal insulation layer can make full use of the heat loss of thermal insulation property reduction delivery of steam separately; And reduce the insulating structure cost to greatest extent, and reduce the outer steel pipe specification greatly simultaneously, reduce the directly buried pipeline size that takes up space with burying.
The hot-melt plastic film 5 of interior working pipe 1 outer surface melts or charing when the steam line heating coil.The hot melting plastic film begins fusing in the time of 120 ℃; Form the interior working pipe 1 of certain confession and need flexible space because of expanded by heating; Cotton felt of aerogel composite adiabatic and hard polyurethane foam are high-intensity heat insulating material; Its bulk strength is bigger, supports and indeformable requirement through detecting the weight that satisfies interior pipe and fed sheet of a media thereof fully.
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 delivery of steam process, increases the delivery of steam distance;
2. insulation layer thickness reduces greatly, and the outer steel pipe specification correspondingly changes little, thereby has reduced expenses such as pipeline transport cost and civil engineering, installation;
3. reduce direct embedment steel pipe burying the required underground space of when ground, improved underground space utilization ratio;
4. through adopting the double insulation structure of cotton felt of aerosil composite heat preserving and thermal insulating and high temperature resistant hydrophobic hard polyurethane foams, rationally utilized the thermal insulation property of each thermal insulating material, and reduced the thermal insulation layer cost to greatest extent;
5. the production orientation and the sliding support of working steel tube need not to establish in addition in the thermal insulation layer of straight length promptly can be used as, and reduced the pipe production manufacture difficulty;
6. the thermal insulation layer water proofing property is fabulous, solves a large amount of heats of taking away when thermal insulation layer causes the heating coil ventilation because of water inlets such as construction, storages greatly.
The above is the preferred implementation of the 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 improvement and retouching, these improvement and retouching also are regarded as the protection domain of the utility model.
Claims (7)
1. directly buried type steam conveying pipe; Include the interior working pipe, thermal insulation layer, the outer protective tube that are provided with from inside to outside successively; It is characterized in that: said thermal insulation layer includes external thermal insulation and inner thermal insulating layer; Wherein, said external thermal insulation is a hydrophobic hard polyaminoester thermal insulation layer, and said inner thermal insulating layer is the aerosil thermal insulation layer.
2. directly buried type steam conveying pipe as claimed in claim 1 is characterized in that: said aerosil thermal insulating material is the cotton felt of aerosil composite heat preserving and thermal insulating.
3. directly buried type steam conveying pipe as claimed in claim 2 is characterized in that: between said inner thermal insulating layer and external thermal insulation, also be provided with thermal reflecting coating.
4. directly buried type steam conveying pipe as claimed in claim 3 is characterized in that: the outer surface of working pipe also is provided with the hot melting plastic film in said.
5. directly buried type steam conveying pipe as claimed in claim 4 is characterized in that: said thermal reflecting coating is the aluminium foil thermal reflecting coating.
6. like each described directly buried type steam conveying pipe among the claim 1-5, it is characterized in that: said outer protective tube includes and is arranged on outer outer steel pipe of said external thermal insulation and the external anti-corrosion layer that is overlying on this outer steel pipe outer surface.
7. directly buried type steam conveying pipe as claimed in claim 6 is characterized in that: working pipe is a steel pipe in said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204634510U CN202392357U (en) | 2011-11-18 | 2011-11-18 | Directly-buried steam conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204634510U CN202392357U (en) | 2011-11-18 | 2011-11-18 | Directly-buried steam conveying pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN202392357U true CN202392357U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204634510U Expired - Fee Related CN202392357U (en) | 2011-11-18 | 2011-11-18 | Directly-buried steam conveying pipeline |
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| CN (1) | CN202392357U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195985A (en) * | 2013-04-08 | 2013-07-10 | 广东埃力生高新科技有限公司 | Conveying pipe with multilayer composite heat insulation structure |
| CN103244758A (en) * | 2013-05-08 | 2013-08-14 | 武汉德威工程技术有限公司 | Directly-embedded energy-saving steam conveying method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN105156840A (en) * | 2015-09-24 | 2015-12-16 | 泰州市鑫润天冶金保温材料有限公司 | Heat insulation pipeline for conveying low-temperature medium |
| CN105823108A (en) * | 2016-06-17 | 2016-08-03 | 南京苏夏工程设计有限公司 | Ultra-distance steam conveying pipeline |
-
2011
- 2011-11-18 CN CN2011204634510U patent/CN202392357U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195985A (en) * | 2013-04-08 | 2013-07-10 | 广东埃力生高新科技有限公司 | Conveying pipe with multilayer composite heat insulation structure |
| CN103195985B (en) * | 2013-04-08 | 2015-09-02 | 广东埃力生高新科技有限公司 | There is the conveyance conduit of multilayer composite heat insulation structure |
| CN103244758A (en) * | 2013-05-08 | 2013-08-14 | 武汉德威工程技术有限公司 | Directly-embedded energy-saving steam conveying method |
| CN105114763A (en) * | 2015-09-22 | 2015-12-02 | 江苏中圣管道工程技术有限公司 | Low-energy-consumption and long-distance steam conveying device |
| CN105114763B (en) * | 2015-09-22 | 2017-10-20 | 江苏中圣管道工程技术有限公司 | Steam low energy consumption long distance delivery device |
| CN105156840A (en) * | 2015-09-24 | 2015-12-16 | 泰州市鑫润天冶金保温材料有限公司 | Heat insulation pipeline for conveying low-temperature medium |
| CN105823108A (en) * | 2016-06-17 | 2016-08-03 | 南京苏夏工程设计有限公司 | Ultra-distance steam conveying pipeline |
| CN105823108B (en) * | 2016-06-17 | 2018-11-30 | 南京苏夏工程设计有限公司 | A kind of overlength distance conveying jet chimney |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu DEWN Energy Saving Co., Ltd. Assignor: Wuhan DEWN Engineering Technology Co., Ltd. Contract record no.: 2012320010158 Denomination of utility model: Direct-buried steam conveying pipeline Granted publication date: 20120822 License type: Exclusive License Record date: 20120713 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu DEWN Energy Saving Co., Ltd. Assignor: Wuhan DEWN Engineering Technology Co., Ltd. Contract record no.: 2012320010158 Date of cancellation: 20140911 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20120822 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20141118 |
|
| EXPY | Termination 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: 20120822 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 |