CN107218478A - A kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its construction method - Google Patents
A kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its construction method Download PDFInfo
- Publication number
- CN107218478A CN107218478A CN201710591685.5A CN201710591685A CN107218478A CN 107218478 A CN107218478 A CN 107218478A CN 201710591685 A CN201710591685 A CN 201710591685A CN 107218478 A CN107218478 A CN 107218478A
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- Prior art keywords
- heat
- insulation layer
- layer
- pipe
- insulation
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/15—Arrangements for the insulation of pipes or pipe systems for underground pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to a kind of prefabricated composite thermal-insulating pipe of steam direct-buried, including working steel tube, heat-insulation layer, external sheath layer and sliding support, heat-insulation layer includes ceramic fiber blanket heat-insulation layer, mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer；Ceramic fiber blanket heat-insulation layer is inner thermal insulating layer, is set directly at the outer surface of working steel tube；Mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer are followed successively by intermediate insulating layer and external thermal insulation；The outer surface of ceramic fiber blanket heat-insulation layer, mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer is respectively arranged with screen layer；The end of sliding support is provided with microporous calcium silicate tile；The present invention is backfilled by Special Hoisting, punch welding technique, weak soil or fine sand, compensator is effectively protected, so that the present invention has the advantages that high insulating effect, is easy to fixed, antiseptic property strong.
Description
Technical field
The invention belongs to utilidor technical field, and in particular to a kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its production
Method.
Background technology
A kind of steam of purposes widely is defeated during the prefabricated composite vapor insulating tube of direct-burried is house, factory and enterprise is built
Send with heat supply pipeline equipment, the long-distance sand transport of high-temperature steam is played a very important role.Simultaneously as its application field
Particularity, also higher is required to the heat-insulating property of the prefabricated composite vapor insulating tube of direct-burried, and existing direct-burried is prefabricated compound
The heat insulation effect of insulating tube is poor, during steam is conveyed, easily the heat of loss steam so that eventually arrive at user area
The heat of steam is had a greatly reduced quality, so that steam heat can not meet the demand of user；Further, since itself spy of high steam
Property, the crushing resistance to the working steel tube of the prefabricated composite vapor multiple tube of direct-burried requires higher, to field fabrication construction butt-joint process
It is required that also higher.
The prefabricated composite vapor insulating tube of direct-burried, needs backfill when embedded, due to the self property of jet chimney, to returning
Requirement is filled out also higher, if backfill is unreasonable, it will cause the damage of steam insulation pipe external sheath layer and heat-insulation layer, and then influence
The heat-insulating property of steam insulation pipe.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art and provide one kind and be easy to fixation, Strong corrosion resistant, anti-machine
The prefabricated composite thermal-insulating pipe of the strong steam direct-buried of tool impulsive force and its construction method.
Technical scheme is as follows：
A kind of prefabricated composite thermal-insulating pipe of steam direct-buried, including working steel tube, heat-insulation layer, external sheath layer and sliding support;
The heat-insulation layer includes ceramic fiber blanket heat-insulation layer, mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer；
The ceramic fiber blanket heat-insulation layer is inner thermal insulating layer, is set directly at the outer surface of the working steel tube；
The mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer are followed successively by intermediate insulating layer and external thermal insulation；
The outer surface of the ceramic fiber blanket heat-insulation layer, mineral wool heat-insulation layer and alumina silicate fiber felt heat-insulation layer is respectively arranged with
Screen layer；
The end of the sliding support is provided with microporous calcium silicate tile.
It is preferred that, the external sheath layer is seamless steel pipe, spiral-selded pipe or rolls one kind in welded still pipe.
It is preferred that, it is provided with air layer between external sheath layer and the outer shield layer.
It is preferred that, the microporous calcium silicate tile is arranged in air layer, and microporous calcium silicate tile can be in air layer
Inside slidably reciprocate.
It is preferred that, anti-corrosion sliding layer is equipped between the ceramic fiber blanket heat-insulation layer and working steel tube, the anti-corrosion is slided
Dynamic layer is epoxy resin-graphite ene coatings.
A kind of construction method of the prefabricated composite thermal-insulating pipe of steam direct-buried, comprises the following steps：
S1, installation prepare, and composite thermal-insulating pipe will be loaded and be moved with crane, during lifting, lift position point is selected in insulation
On pipe on the working steel tube without heat-insulation layer；
When S2, installation, a composite thermal-insulating pipe is docked with another composite thermal-insulating pipe, it is ensured that the work steel of two composite thermal-insulating pipes
Pipe is docked along same straight line, then carries out butt welding using punch welding technique；
S3, composite thermal-insulating pipe fixing point processing, heat-insulation layer will be peeled off in fixed point, and rib plate is welded on working steel tube, used
Heat-resisting concrete cast, the external thermal insulation peeled off in pour concrete keeps 150-200mm away from rib plate distance, and external thermal insulation is embedded to
200mm in concrete；
S4, interface processing, the strict standard by insulating tube is performed during product joint at the scene, takes measures to protect when outer layer is sealed
Tightness is demonstrate,proved, prevents water from immersing heat-insulation layer from joint；
S5, the processing of compensator position, compensator are arranged in iron case, and pipeline gateway installs the long sleeve pipes of 600mm, multiple tube additional
Entirety will stretch into more than 500mm in iron case, and be sealed with sleeve pipe by waterstop, it is ensured that the water outside iron case can not enter iron case
It is interior；
When S6, pipe laying, the first place mat 100mm below composite thermal-insulating pipe weak soil or fine sand, after composite thermal-insulating pipe lifting is in place,
Backfilled with 100mm weak soil or fine sand, pad soil is then backfilled again.
Compared with prior art, the beneficial effects of the invention are as follows：The heat-insulation layer of the invention that obtains is by ceramic fiber blanket heat-insulation layer, glass
Glass cotton heat-insulation layer and alumina silicate fiber felt heat-insulation layer are constituted, and wherein ceramic fiber blanket heat-insulation layer is fully sharp as inner thermal insulating layer
With the small advantage of the high temperature resistant of ceramic fibre, good heat endurance, low thermal conductivity, specific heat, as internal layer insulation, to work
Steel pipe plays the effect of ultimate insulation protection and fire protection flame retarding；Mineral wool heat-insulation layer make use of mineral wool as the second heat-insulation layer
Thermal conductivity it is low, be incubated adiabatic, corrosion-resistant, stable chemical performance advantage, insulation is played to inner thermal insulating layer and working steel tube anti-
Rotten effect；Alumina silicate fiber felt heat-insulation layer sufficiently make use of it to have low heat conductivity, heat endurance as outer layer heat-insulation layer
Excellent, chemical stability is good, advantage without binding agent and corrosive material；The present invention is to working steel tube using three layers of insulation
Protection, is sufficiently incubated to steam insulation pipe；And the present invention is in construction, the working steel tube of docking is welded using punching press
Technique is connect, switching performance is improved, strengthens its being fixedly connected property, formula is fixed to insulating tube, is poured into a mould using heat-resisting concrete, makes outer layer
Insulation is integrally formed with concrete, reaches the effect of waterproof.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Reference, 1, working steel tube, 2, external sheath layer, 3, sliding support, 4, ceramic fiber blanket heat-insulation layer, 5, mineral wool
Heat-insulation layer, 6, alumina silicate fiber felt heat-insulation layer, 7, screen layer, 8, microporous calcium silicate tile, 9, air layer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of prefabricated composite thermal-insulating pipe of steam direct-buried as shown in Figure 1, including working steel tube 1, heat-insulation layer, external sheath layer 2 with
And sliding support 3, the heat-insulation layer include ceramic fiber blanket heat-insulation layer 4, mineral wool heat-insulation layer 5 and alumina silicate fiber felt insulation
Layer 6, so that compound heat-insulation layer is formed, the insulation protection of working steel tube；The ceramic fiber blanket heat-insulation layer 4 is inner thermal insulating layer,
It is set directly at the outer surface of the working steel tube 1, the effect of insulation protection and fire protection flame retarding is played to working steel tube 1；It is described
Mineral wool heat-insulation layer 5 and alumina silicate fiber felt heat-insulation layer 6 are followed successively by intermediate insulating layer and external thermal insulation, successively to working steel tube 1
Play the effect of anticorrosive heat insulating insulation；The ceramic fiber blanket heat-insulation layer 4, mineral wool heat-insulation layer 5 and alumina silicate fiber felt are protected
The outer surface of warm layer 6 is respectively arranged with screen layer 7；The end of the sliding support 3 is provided with microporous calcium silicate tile 8, as
Inner sliding type structure, compression strength high advantage low with thermal conductivity factor.
In the present embodiment, the external sheath layer 2 be seamless steel pipe, spiral-selded pipe or roll in welded still pipe one
Kind；Air layer 9 is provided between external sheath layer 2 and the outer shield layer 7；The microporous calcium silicate tile 8 is arranged on air
In layer 9, and microporous calcium silicate tile 8 can slidably reciprocate in air layer 9；The ceramic fiber blanket heat-insulation layer 4 and work steel
It is equipped with anti-corrosion sliding layer between pipe 1, the anti-corrosion sliding layer is epoxy resin-graphite ene coatings, it is easy with good anti-corrosion
The effect of slip.
Claims (6)
1. a kind of prefabricated composite thermal-insulating pipe of steam direct-buried, including working steel tube（1）, heat-insulation layer, external sheath layer（2）And slide branch
Frame（3）, it is characterised in that：
The heat-insulation layer includes ceramic fiber blanket heat-insulation layer（4）, mineral wool heat-insulation layer（5）And alumina silicate fiber felt heat-insulation layer
（6）；
The ceramic fiber blanket heat-insulation layer（4）For inner thermal insulating layer, the working steel tube is set directly at（1）Outer surface；
The mineral wool heat-insulation layer（5）With alumina silicate fiber felt heat-insulation layer（6）It is followed successively by intermediate insulating layer and external thermal insulation；
The ceramic fiber blanket heat-insulation layer（4）, mineral wool heat-insulation layer（5）And alumina silicate fiber felt heat-insulation layer（6）Outer surface
It is respectively arranged with screen layer（7）；
The sliding support（3）End be provided with microporous calcium silicate tile（8）.
2. a kind of prefabricated composite thermal-insulating pipe of steam direct-buried as claimed in claim 1, it is characterised in that：The external sheath layer（2）
For seamless steel pipe, spiral-selded pipe or roll one kind in welded still pipe.
3. a kind of prefabricated composite thermal-insulating pipe of steam direct-buried as claimed in claim 1, it is characterised in that：The external sheath layer（2）
With outer shield layer（7）Between be provided with air layer（9）.
4. the prefabricated composite thermal-insulating pipe of a kind of steam direct-buried as described in claim 1 or 4, it is characterised in that：The micropore silicic acid
Calcium tile（8）It is arranged on air layer（9）It is interior, and microporous calcium silicate tile（8）Can be in air layer（9）Inside slidably reciprocate.
5. a kind of prefabricated composite thermal-insulating pipe of steam direct-buried as claimed in claim 1, it is characterised in that：The ceramic fiber blanket is protected
Warm layer（4）With working steel tube（1）Between be equipped with anti-corrosion sliding layer, the anti-corrosion sliding layer is epoxy resin-graphite ene coatings.
6. a kind of construction method of the prefabricated composite thermal-insulating pipe of steam direct-buried as claimed in claim 1, it is characterised in that including with
Lower step：
S1, installation prepare, and composite thermal-insulating pipe will be loaded and be moved with crane, during lifting, lift position point is selected in insulation
Working steel tube without heat-insulation layer on pipe（1）On；
When S2, installation, a composite thermal-insulating pipe is docked with another composite thermal-insulating pipe, it is ensured that the work steel of two composite thermal-insulating pipes
Pipe（1）Docked along same straight line, butt welding is then carried out using punch welding technique；
S3, composite thermal-insulating pipe fixing point processing, will peel off heat-insulation layer, in working steel tube in fixed point（1）Upper weldering rib plate,
Poured into a mould with heat-resisting concrete, the external thermal insulation peeled off in pour concrete keeps 150-200mm away from rib plate distance, and external thermal insulation is buried
Enter 200mm in concrete；
S4, interface processing, the strict standard by insulating tube is performed during product joint at the scene, takes measures to protect when outer layer is sealed
Tightness is demonstrate,proved, prevents water from immersing heat-insulation layer from joint；
S5, the processing of compensator position, compensator are arranged in iron case, and pipeline gateway installs the long sleeve pipes of 600mm, multiple tube additional
Entirety will stretch into more than 500mm in iron case, and be sealed with sleeve pipe by waterstop, it is ensured that the water outside iron case can not enter iron case
It is interior；
When S6, pipe laying, the first place mat 100mm below composite thermal-insulating pipe weak soil or fine sand, after composite thermal-insulating pipe lifting is in place,
Backfilled with 100mm weak soil or fine sand, pad soil is then backfilled again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710591685.5A CN107218478A (en) | 2017-07-19 | 2017-07-19 | A kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710591685.5A CN107218478A (en) | 2017-07-19 | 2017-07-19 | A kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN107218478A true CN107218478A (en) | 2017-09-29 |
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ID=59952963
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710591685.5A Pending CN107218478A (en) | 2017-07-19 | 2017-07-19 | A kind of prefabricated composite thermal-insulating pipe of steam direct-buried and its construction method |
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| Country | Link |
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| CN (1) | CN107218478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167554A (en) * | 2018-02-10 | 2018-06-15 | 上海科华热力管道有限公司 | A kind of composite anti-corrosive inner sliding type directly buried installation steam insulation pipe and its installation method |
| CN114216000A (en) * | 2021-11-19 | 2022-03-22 | 中投(天津)智能管道股份有限公司 | Method for manufacturing prefabricated direct-buried steam heat-insulation pipe with nano heat-insulation layer |
| CN114791068A (en) * | 2022-05-19 | 2022-07-26 | 唐山顺浩环保科技有限公司 | Prefabricated overhead composite heat-insulating pipe for conveying high-temperature heat medium and production process |
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| CN1101968A (en) * | 1994-08-04 | 1995-04-26 | 于永辉 | Method for directly burying superheat steam pipeline |
| CN202955419U (en) * | 2012-11-22 | 2013-05-29 | 淮安四方保温管有限公司 | Thermal insulation structure for steam direct buried pipe |
| CN204284685U (en) * | 2014-11-04 | 2015-04-22 | 河南三杰热电科技股份有限公司 | Steam direct-buried is heat preservation pipe prefabricated |
| CN105257917A (en) * | 2015-09-25 | 2016-01-20 | 哈尔滨固克天诚建材经销有限公司 | Variable-diameter type corrosion-preventing high-temperature-resisting buried composite thermal insulation pipeline and mounting method |
| CN106090459A (en) * | 2016-06-29 | 2016-11-09 | 无锡必胜必精密钢管有限公司 | A kind of prefabricated direct-buried steam insulation steel pipe |
-
2017
- 2017-07-19 CN CN201710591685.5A patent/CN107218478A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101968A (en) * | 1994-08-04 | 1995-04-26 | 于永辉 | Method for directly burying superheat steam pipeline |
| CN202955419U (en) * | 2012-11-22 | 2013-05-29 | 淮安四方保温管有限公司 | Thermal insulation structure for steam direct buried pipe |
| CN204284685U (en) * | 2014-11-04 | 2015-04-22 | 河南三杰热电科技股份有限公司 | Steam direct-buried is heat preservation pipe prefabricated |
| CN105257917A (en) * | 2015-09-25 | 2016-01-20 | 哈尔滨固克天诚建材经销有限公司 | Variable-diameter type corrosion-preventing high-temperature-resisting buried composite thermal insulation pipeline and mounting method |
| CN106090459A (en) * | 2016-06-29 | 2016-11-09 | 无锡必胜必精密钢管有限公司 | A kind of prefabricated direct-buried steam insulation steel pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167554A (en) * | 2018-02-10 | 2018-06-15 | 上海科华热力管道有限公司 | A kind of composite anti-corrosive inner sliding type directly buried installation steam insulation pipe and its installation method |
| CN114216000A (en) * | 2021-11-19 | 2022-03-22 | 中投(天津)智能管道股份有限公司 | Method for manufacturing prefabricated direct-buried steam heat-insulation pipe with nano heat-insulation layer |
| CN114791068A (en) * | 2022-05-19 | 2022-07-26 | 唐山顺浩环保科技有限公司 | Prefabricated overhead composite heat-insulating pipe for conveying high-temperature heat medium and production process |
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Application publication date: 20170929 |
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