CN108506596A - A kind of heat-insulating pipe fitting and processing method of built-in fiber - Google Patents
A kind of heat-insulating pipe fitting and processing method of built-in fiber Download PDFInfo
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- CN108506596A CN108506596A CN201810209008.7A CN201810209008A CN108506596A CN 108506596 A CN108506596 A CN 108506596A CN 201810209008 A CN201810209008 A CN 201810209008A CN 108506596 A CN108506596 A CN 108506596A
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- Prior art keywords
- ferrule
- inner tube
- heat
- pipe fitting
- insulating layer
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- 239000000835 fiber Substances 0.000 title claims abstract description 45
- 238000003672 processing method Methods 0.000 title abstract description 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000012774 insulation material Substances 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005187 foaming Methods 0.000 abstract description 9
- 230000035515 penetration Effects 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000004964 aerogel Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
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- 229910045601 alloy Inorganic materials 0.000 description 1
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- 238000003491 array Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
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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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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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
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to insulating tube technical fields, and in particular to a kind of heat-insulating pipe fitting of built-in fiber, including：Pipe fitting ontology, including the inner tube, insulating layer and the outer protection tube that are arranged from inside to outside；The ferrule of built-in fiber is arranged in insulating layer, and the support element in the precalculated position that several are used to ferrule being held away from inner tube is provided between ferrule and the outer wall of inner tube.The invention further relates to a kind of processing methods：Prefabricated profiled inner tube and outer protection tube are arranged connection, then fill thermal insulation material in cavity, forms insulating layer, before insulating layer is pre-formed, several support elements first are set in the precalculated position far from inner tube, then pre-buried ferrule；Finally after completing the heat-insulating pipe fitting construction of predetermined length, optical fiber is packed into ferrule.The not pliable damage in pipeline foaming process that the present invention provides a kind of optical fiber and penetration pipe, and insulation layer thickness is uniform, the heat-insulating pipe fitting and processing method of the high built-in fiber of testing result accuracy.
Description
Technical field
The present invention relates to insulating tube technical fields, and in particular to a kind of heat-insulating pipe fitting and processing method of built-in fiber.
Background technology
Heat preservation pipe prefabricated is the hot water pipeline that China heat supply in winter region uses, when leaking in the process of running,
Leakage or outer protection tube leakage, can all cause the acute variation of leak position pipeline and ambient temperature either in medium tube.
In addition, pipeline, during long-play, the prefabricated thermal insulation caused by the reasons such as environment, construction, operation fails, and can all cause
Insulation failure position pipeline and ambient temperature it is slowly varying.The temperature information of above pipeline and surrounding enviroment,
Sufficient information can be provided for the on-line monitoring and malfunction elimination of conduit running state.
For this purpose, Chinese patent literature CN206300012U discloses a kind of insulating tube, including：Inner tube and insulating layer, heat preservation
Layer is closely sheathed on outside inner tube, and the optical fiber for capableing of thermometric is contained in the inside of insulating layer, and at least one is provided in insulating layer and is worn
Spool, optical fiber are set in penetration pipe, and the axis of penetration pipe is parallel to the axis of inner tube, thermally sensitive using optical fiber itself
Characteristic can find and determine leakage point in time.In pipeline foaming process, power caused by foamed material expansion curing process
Very big, which acts directly on optical fiber or penetration pipe, it will causes it to be bent to different shapes, and shape can not be pre-
Know, optical fiber and penetration pipe thus will be caused to there is a possibility that bend and damage.Also, since stress is unpredictable, optical fiber or
Insulation layer thickness between penetration pipe and inner tube will be difficult to ensure stabilization, and lower deviation will become very large thereon, be embodied in temperature inspection
In survey, it will cause testing result deviation to become apparent, influence the accuracy of detection.
Invention content
Therefore, the technical problem to be solved in the present invention is that optical fiber and penetration pipe in the prior art is overcome to foam in pipeline
The pliable damage of process, and insulation layer thickness is difficult to ensure, and then the defect for causing detection accuracy poor, to provide one kind
The not pliable damage in pipeline foaming process of optical fiber and penetration pipe, and insulation layer thickness is uniform, testing result accuracy is high
The heat-insulating pipe fitting and processing method of built-in fiber.
In order to solve the above technical problem, the present invention provides a kind of heat-insulating pipe fittings of built-in fiber, including：
Pipe fitting ontology, including the inner tube, insulating layer and the outer protection tube that are arranged from inside to outside；
The ferrule of built-in fiber is arranged in the insulating layer, and in the outer of the ferrule and said inner tube
The support element in the precalculated position that several are used to the ferrule being held away from said inner tube is provided between wall.
The heat-insulating pipe fitting of the built-in fiber, the ferrule and several described support elements are along said inner tube
Move towards setting.
The heat-insulating pipe fitting of the built-in fiber, the ferrule are arranged in the insulating layer close to the outer protection tube
Side.
The heat-insulating pipe fitting of the built-in fiber, the ferrule are corrosion-and high-temp-resistant, and are had malleable rigid
Property material.
The heat-insulating pipe fitting of the built-in fiber, the end of said inner tube exceed the end of the corresponding insulating layer and outer protection tube
Portion is arranged, and the end set of the insulating layer, the ferrule and said inner tube are extended in the end of the ferrule
Outer wall between be formed with gap, the support element is fixed in the gap.
The heat-insulating pipe fitting of the built-in fiber, the heat-insulating pipe fitting are in heat insulation elbow, heat preservation threeway or heat preservation reducing
It is any.
The present invention also provides a kind of methods of the heat-insulating pipe fitting of the built-in fiber described in processing, include the following steps：
Prefabricated profiled inner tube and outer protection tube are arranged connection, then the sky to be formed is arranged in said inner tube and the outer protection tube
Intracavitary fills thermal insulation material, forms insulating layer, before the insulating layer is pre-formed, first in the precalculated position far from said inner tube
Several support elements are set, then pre-buried ferrule；Finally optical fiber is packed into the ferrule.
The end of said inner tube is exceeded the corresponding insulating layer by the method for the heat-insulating pipe fitting of the processing built-in fiber
Extend the end 5-20cm of the insulating layer with the end of the end set of outer protection tube, the ferrule, and close to described
The side of outer protection tube is arranged, while to form gap between the ferrule and the outer wall of said inner tube.
The method of the heat-insulating pipe fitting of the processing built-in fiber, further includes that outer protection tube is arranged in the periphery of said inner tube,
The step of thermal insulation material is finally filled between the outer protection tube and said inner tube.
Technical solution of the present invention has the following advantages that：
1. the heat-insulating pipe fitting of built-in fiber provided by the invention is set between the ferrule and the outer wall of said inner tube
It is equipped with the support element in the precalculated position that several are used to the ferrule being held away from said inner tube.Ferrule and interior
The setting of support element between the outer wall of pipe, it can be ensured that the spacing between ferrule and inner tube is unlikely too small, increases ferrule
The thickness of insulating layer between inner tube, and ensure that thickness is uniform, and can to avoid during filling thermal insulation material because squeezing,
Ferrule caused by the reasons such as expansion and vibration and fiber kinks deformation, ferrule damage, and then ensure optical fiber measurement number
According to stability and accuracy.
2. the heat-insulating pipe fitting of built-in fiber provided by the invention, the ferrule and several described support elements are along institute
The setting of moving towards of inner tube is stated, be convenient for optical fiber in this way is blown into construction, while ensure that the accuracy of testing result.
3. the ferrule of the heat-insulating pipe fitting of built-in fiber provided by the invention, built-in fiber is arranged in the insulating layer
Close to the side of outer protection tube.In this way so that fiber distance inner tube in medium farther out, Jie in position and inner tube where optical fiber
The temperature difference of matter is larger, and when pipeline leaks, the temperature at ferrule will steeply rise, even equal to or close to inner tube
In medium temperature, temperature change is apparent, is convenient for fiber laser arrays, testing result in time, it is accurate.
4. the heat-insulating pipe fitting of built-in fiber provided by the invention, the ferrule is corrosion-and high-temp-resistant, and has and prolong
The rigid of malleability so that ferrule maintains normal performance under the pumped (conveying) medium of different temperatures, while in pipe leakage
In hot and humid environment caused by afterwards also can steady operation, extend service life；Cause light when to weld seam simultaneously
When the axis of fiber coating pipe misplaces, it is conveniently adjusted the angle of pipe end, is conducive to seal construction and the heat preservation of joint area.
5. the method for the heat-insulating pipe fitting of processing built-in fiber provided by the invention, before insulating layer is pre-formed, first remote
Several support elements are arranged in precalculated position from inner tube, then pre-buried ferrule；Finally when the insulating tube for completing predetermined length
After part construction, it is packed into optical fiber in ferrule, it is not only convenient for the loading of optical fiber in this way, it is ensured that in pipeline foaming process
Ferrule and optical fiber will not be squeezed bending damage by the active force of generation, while make insulation layer thickness uniform, it is ensured that detection
As a result accuracy.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram of the heat-insulating pipe fitting of built-in fiber provided by the invention；
Fig. 2 is schematic diagram of the inner tube when not being arranged insulating layer and outer protection tube.
Reference sign：
1- ferrules；2- inner tubes；3- insulating layers；4- outer protection tubes；5- support elements.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
A kind of specific implementation mode of the heat-insulating pipe fitting of built-in fiber as illustrated in fig. 1 and 2, the insulating tube in the present embodiment
Part is heat insulation elbow, includes the ferrule 1 of pipe fitting ontology and built-in fiber.Pipe fitting ontology includes being arranged successively from inside to outside
Inner tube 2, insulating layer 3 and outer protection tube 4, and include straight pipe and bend loss two parts, two parts are integrally machined molding；Inner tube 2
For steel pipe, insulating layer 3 is polyurethane insulation coating, and outer protection tube 4 is PE outer protection tubes, and ferrule 1 is stainless steel sleeve pipe, meets highest
140 DEG C of heatproof and requirement for anticorrosion, and caused by after utilidor leakage in hot and humid environment can steady operation, wait protecting
Warm pipeline is completed after repairing, and optical fiber and ferrule 1 can be continuing with.The ferrule 1 of built-in fiber is arranged in the heat preservation
In layer 3, and several are provided with for consolidating the ferrule 1 between the ferrule 1 and the outer wall of said inner tube 2
It is scheduled on the support element 5 in the precalculated position far from said inner tube 2, several support elements 5 are spaced successively along the axial direction of ferrule 1
Even arrangement, and positioned at the lower section of ferrule 1.Due to the gravity of itself of ferrule 1, might have under certain degree
It hangs down, 2 circumferential direction of pendant position and inner tube in ferrule 1 can be arranged in support element 5, to provide support, so that it is guaranteed that foaming
Material ensures that the radial distance of foaming layer is consistent full of the space between ferrule 1 and inner tube 2, clear in order to show, Fig. 2
In the support element 5 of straight pipe is omitted.Specifically, the support element 5 is holder.
The ferrule 1 and several described support elements 5 are along the setting of moving towards of said inner tube 2, i.e. ferrule 1
The arragement direction of trend and support element 5 all has certain bending angle, with consistent with the shape of inner tube, convenient for construction.Optical fiber
The quantity of casing 1 can be arranged multiple according to demand, and 1 ring of multiple ferrules is located in insulating layer 3 close to the one of outer protection tube 4
Side, a plurality of optical fiber detect simultaneously, high sensitivity.
As a kind of specific embodiment, the ferrule 1 is arranged in the insulating layer 3 close to the outer protection tube
4 side is arranged far from inner tube 2 as possible.This is because when other positions of the weld bond of inner tube 2 or inner tube 2 leak,
Heat source (such as hot water or hot gas) in inner tube 2 oozes out into insulating layer 3 set outside the leakage by leakage, due to protecting
The temperature of warm layer 3 is relatively low compared with the temperature of the heat source in inner tube 2, and the heat source substance of exudation can make the guarantor being arranged outside the leakage
The temperature of warm layer 3 increases, and the optical fiber in the ferrule 1 being embedded at this time in insulating layer 3 will detect the temperature change, and
Optical signal containing temperature information and location information feature is sent to terminal device, and is carried out optical signal by the terminal device
Parse the leak source so that it is determined that pipeline.Ferrule 1 is arranged in insulating layer 3 close to the side of outer protection tube 4, increases as possible in this way
The distance between optical fiber and inner tube 2 so that the temperature difference is more obvious, be easy to detect, testing result in time, it is accurate.
As a kind of specific embodiment, the ferrule 1 is corrosion-and high-temp-resistant, and has malleable metal
Material, such as stainless steel or other alloys.High-temperature-hot-water leakage caused by leakage, insulation failure caused by pipeline leakage etc. in pipeline
Reason can cause each component in thermal insulation material to be in the working environment of high temperature and humidity, and conventional material and product can be rapid rotten
Erosion, aging, and influenced to deform by high temperature, as line leakage system, ferrule 1 should have in above-mentioned working environment
The physicochemical property of stable operation.
Specifically, the end of said inner tube 2 exceeds the end set of the corresponding insulating layer 3 and outer protection tube 4, i.e. inner tube 2
End expose to the end of insulating layer 3 and outer protection tube 4；And the end of the insulating layer 3 is extended in the end of the ferrule 1
Portion 5-20cm, the purpose for the arrangement is that convenient for the connection of two adjacent heat-insulating pipe fittings, construction is more convenient.The ferrule
It is formed with gap between 1 and the outer wall of said inner tube 2, which is the filling space of thermal insulation material, and the support element 5 is fixed on
In the gap.
The ferrule 1 is embedded in the insulating layer 3.In 3 prefabrication process of insulating layer, first ferrule 1 is consolidated
After being scheduled on the position of setting, then pouring foaming material, to form pre-buried structure.
As a kind of alternative embodiment, support element 5 is to be wrapped on the ferrule 1 and be fixed on described make a reservation for
The wire rod of position.Stainless steel wire can be wound in the periphery of ferrule 1, and the other end of stainless steel wire is suspended on a holder
On, thermal insulation material is then refilled, insulating layer 3 is formed.
As alternative embodiment, the heat-insulating pipe fitting can also be heat preservation threeway or heat preservation reducing.
As alternative embodiment, inner tube 2 is steel pipe, and insulating layer 3 is polyurethane insulation coating, and outer protection tube 4 is outside metal
Pillar.Can also inner tube 2 be steel pipe, insulating layer 3 be aerogel blanket, outer protection tube 4 be steel jacket.Can also inner tube 2 be steel pipe,
Insulating layer 3 is inorganic material layer, and outer protection tube 4 is steel jacket.Or inner tube 2 is steel pipe, insulating layer 3 is composite heat-insulating layer, example
Such as aerogel blanket, polyurethane and inorganic material combination of materials form, and outer protection tube 4 is plastic tube.Or inner tube 2 is plastic tube,
Insulating layer 3 is that the combinations of materials such as composite heat-insulating layer, such as aerogel blanket, polyurethane and inorganic material form, and outer protection tube 4 is just outer
Pillar.Or inner tube 2 is plastic tube, insulating layer 3 is polyurethane insulation coating, and outer protection tube 4 is plastic tube.
A kind of method of the heat-insulating pipe fitting of built-in fiber described in processing, includes the following steps：
Inner tube 2 and outer protection tube 4 are distinguished into machine-shaping first, then by 4 company of being arranged of prefabricated profiled inner tube 2 and outer protection tube
It connects, then is arranged in the cavity to be formed in said inner tube 2 and the outer protection tube 4 and fills thermal insulation material, insulating layer 3 is formed, described
Before insulating layer 3 is pre-formed, several support elements 5 first are set in the precalculated position far from said inner tube 2, then pre-buried optical fiber set
Pipe 1；The burr and impurity of cleaning removal 1 inner and outer wall of ferrule；Finally when the heat-insulating pipe fitting construction for completing predetermined length
Afterwards, it is constructed by air-blowing in the ferrule 1 and is packed into optical fiber.It first carries out ferrule 1 to construct, then carries out air-blowing and apply
Work, the cavity and optical fiber that ferrule 1 can be made to form are completely separable, and repair and replacement to optical fiber provide possibility, and air-blowing
High construction efficiency is easy, is not required to excavated pavement, and cost is relatively low.
As a kind of specific embodiment, the end of said inner tube 2 is exceeded into the corresponding insulating layer 3 and outer protection tube 4
End set, in order to the connection of two neighboring inner tube 2；Extend the end of the insulating layer 3 in the end of the ferrule 1
Portion 5-20cm, and close to the setting of the side of the outer protection tube 4, at the same make the ferrule 1 and said inner tube 2 outer wall it
Between form gap, the gap be thermal insulation material filling space.
Specifically, support element 5, support element 5 first are set in the gap between the ferrule 1 and the outer wall of inner tube 2
It is multiple that it can be spaced setting according to demand, ferrule 1 is held away to the pre-position of inner tube 2, then described
Outer protection tube 4 is arranged in the periphery of inner tube 2, finally fills thermal insulation material between the outer protection tube and said inner tube 2.It is protected with polyurethane
For adiabator, in utilidor foaming process, power is very big caused by expanded material expansion curing process, if ferrule
1 does not have fixing device or measure, can be bent to different shapes because of extrusion expansion in foaming process, and shape is unpredictable,
Thus ferrule 1 will be caused to there is a possibility that bend and damage.Also, since stress is unpredictable, ferrule 1 with it is interior
3 thickness of insulating layer between pipe 2 will be difficult to ensure stabilization, and lower deviation will become very large thereon, be embodied in temperature detection, partially
Difference will become apparent from, and influence the accuracy of detection.
Heat-insulating pipe fitting containing ferrule can make optical fiber be comprised in the inside of heat-insulating pipe fitting, make light after completing to be laid with
Fibre is preferably protected, and the impaired possibility of optical fiber is reduced.Compared to the laying mode that pipeline external lays optical fiber, in pipeline
Inside installation ferrule is simultaneously laid with optical fiber, fault restoration of the optical fiber after completing to be laid with can be made to become simple and convenient, even if light
Fibre appearance is badly damaged to be caused to use, and can be removed bad optical fiber and more be renewed optical fiber, avoid directly buried installation optical fiber and cause
Repair replace difficult problem.
Heat supply pipeline is laid on cities and towns more, and branch is more, mostly by cell along pipeline.Optical fiber is laid in utilidor
Portion can be directly entered cell with pipeline, and the interface into cell that need not be additionally is constructed and cable connection, and may insure
The intensity of optical ca ble protection.System is monitored relative to impedance type or resistance-type, the positioning accuracy of optic-fiber monitoring system can be further
It is contracted to 1m/km, i.e., every 500 meters of positioning accuracy can reach within 0.5 meter.Pass through detection fiber temperature change, fiber-optic monitoring
System may be implemented to monitor the temperature change of insulating layer residing for ferrule in real time, by comparison original temperature curve and in real time
Temperature curve can be accurately positioned temperature anomaly position.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (8)
1. a kind of heat-insulating pipe fitting of built-in fiber, which is characterized in that including：
Pipe fitting ontology, including the inner tube (2), insulating layer (3) and the outer protection tube (4) that are arranged from inside to outside；
The ferrule (1) of built-in fiber is arranged in the insulating layer (3), and in the ferrule (1) and said inner tube
(2) several precalculated positions for the ferrule (1) to be held away to said inner tube (2) are provided between outer wall
Support element (5).
2. the heat-insulating pipe fitting of built-in fiber according to claim 1, which is characterized in that the ferrule (1) and several
A support element (5) moves towards setting along said inner tube (2).
3. the heat-insulating pipe fitting of built-in fiber according to claim 1 or 2, which is characterized in that ferrule (1) setting
In the insulating layer (3) close to the side of the outer protection tube (4).
4. according to the heat-insulating pipe fitting of claim 1-3 any one of them built-in fibers, which is characterized in that said inner tube (2)
End exceeds the end set of the corresponding insulating layer (3) and outer protection tube (4), and the end of the ferrule (1) is extended
The end set of the insulating layer (3) is formed with gap between the ferrule (1) and the outer wall of said inner tube (2), described
Support element (5) is fixed in the gap.
5. according to the heat-insulating pipe fitting of claim 1-4 any one of them built-in fibers, which is characterized in that the heat-insulating pipe fitting is
Any one of heat insulation elbow, heat preservation threeway or heat preservation reducing.
6. a kind of method of the heat-insulating pipe fitting of processing claim 1-5 any one of them built-in fibers, which is characterized in that including
Following steps：
Prefabricated profiled inner tube (2) and outer protection tube (4) are arranged connection, then are arranged in said inner tube (2) and the outer protection tube (4)
Thermal insulation material is filled in the cavity of formation, forms insulating layer (3), before the insulating layer (3) is pre-formed, first far from described
Several support elements (5) are arranged in the precalculated position of inner tube, then pre-buried ferrule (1)；Finally as the guarantor for completing predetermined length
After warm pipe fitting construction, optical fiber is packed into the ferrule (1).
7. the method for the heat-insulating pipe fitting of processing built-in fiber according to claim 6, which is characterized in that by said inner tube
(2) end exceeds the end set of the corresponding insulating layer (3) and outer protection tube (4), and the end of the ferrule (1) extends
Go out the end 5-20cm of the insulating layer (3), and be arranged close to the side of the outer protection tube (4), while making the optical fiber set
Gap is formed between pipe (1) and the outer wall of said inner tube (2).
8. the method for the heat-insulating pipe fitting of processing built-in fiber according to claim 7, which is characterized in that further include described
The periphery setting outer protection tube (4) of inner tube (2), finally fills thermal insulation material between the outer protection tube (4) and said inner tube (2)
Step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209008.7A CN108506596A (en) | 2018-03-14 | 2018-03-14 | A kind of heat-insulating pipe fitting and processing method of built-in fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209008.7A CN108506596A (en) | 2018-03-14 | 2018-03-14 | A kind of heat-insulating pipe fitting and processing method of built-in fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946925A (en) * | 2020-08-14 | 2020-11-17 | 青岛华仕达机器股份有限公司 | Pipe penetrating device for elbow heat-preservation pipe |
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Application publication date: 20180907 |