CN109986303A - The manufacturing method of aerogel heat-proof oil pipe - Google Patents
The manufacturing method of aerogel heat-proof oil pipe Download PDFInfo
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- CN109986303A CN109986303A CN201810004579.7A CN201810004579A CN109986303A CN 109986303 A CN109986303 A CN 109986303A CN 201810004579 A CN201810004579 A CN 201810004579A CN 109986303 A CN109986303 A CN 109986303A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000004964 aerogel Substances 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000007872 degassing Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000005488 sandblasting Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000005030 aluminium foil Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims description 4
- 210000000664 rectum Anatomy 0.000 claims description 4
- 238000005480 shot peening Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 2
- 239000011229 interlayer Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000283986 Lepus Species 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
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- 238000011156 evaluation Methods 0.000 description 1
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- 239000006247 magnetic powder Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention belongs to oil-gas mining technical fields, and in particular to a kind of manufacturing method of aerogel heat-proof oil pipe, the manufacturing method is the following steps are included: step 1, insulated tubing selection blanking；Step 2, inner tube are swollen pier；Step 3, derusting by sandblasting；Step 4, heating degasification；Step 5, inner tube are wrapped up using aeroge composite heat-insulated material；Step 6, suit；Step 7, welding；Step 8, heating auxiliary vacuumize weldering and block up；Step 9, apparent heat conductivity test；Step 10, assembling label；Step 11, detection, packaging；The present invention has made to improve and tackle key problems from tubing, heat-barrier material and processing technology, substantially increase the stability of the insulated tubing heat-proof quality, extend service life, reduce the period use cost of instlated tubular, it can satisfy the hole condition requirement of various steam injection thermal recovery wells, it is the upgraded product of existing insulated tubing, has filled up domestic and international aeroge in the technological gap in thermally insulating the borehole field.
Description
Technical field
The invention belongs to oil-gas mining technical fields, and in particular to a kind of manufacturing method of aerogel heat-proof oil pipe, tool
Say to body it is a kind of manufacturing method suitable for thick oil thermal extraction aerogel heat-proof oil pipe.
Background technique
Heat extraction by steam injection is one of exploitation most effective technological means of heavy crude reservoir, and steam injection thermal recovery will obtain good exploitation
Effect, in addition to reservoir condition, key point is to inject the quality of steam of oil reservoir.Insulated tubing is the important equipment in Simulation on whole pay zones,
Its purposes is to inject high temperature, high steam toward underground as steam injection channel, reduces wellbore heat loss, improves the steam at injection well bottom
Quality, while protecting oil well casing and cementing concrete ring from the damage of thermal stress；Some thick oil thermal extractions are also by insulated tubing
It is used as flow string, therefore has good heat-insulated and thermal insulation property insulated tubing most important.
The Chinese patent that notification number is CN1177699B discloses a kind of vacuum heat-insulation oil pipe and its manufacturing process technology, by
Box cupling, insulation bushing, bushing pipe, outer tube, inner tube, heat-barrier material, wiper block, getter composition.The vacuum heat-insulation that the invention provides
Oil pipe manufacturing process technology is as follows: 1. inner tube working processes: inner tube uses external upset tubing, and both ends are flat using using after heating in medium frequency
Forging machine expands into toroidal, and horn mouth size is identical as outer tube diameter；Bead is carried out to inner tube outer surface；With tape punching
Industrial Aluminium Foil Package is in interior tube outside, and dispenser getter, is wrapped among 2-15 layers, every two layers altogether with the glass fiber yarn toasted thereon
Window cloth or glass cloth interval constitute heat-barrier material, along inner tube overall length uniform device 4 to centering ring after having wrapped；Heat-insulated material will be wrapped
The inner tube assembly of material is sent into furnace and is toasted；2. inner and outer pipe assembles: the inner tube assembly after baking is packed into inner surface through shot-peening
In the outer tube of processing；Use CO2Electrogas process weld-ring weld seam first welds one section of inner and outer pipes；Then it is given with thermal stretching method
Inner tube applies prestressing force；The other end is welded with same method when inner tube is elongated to design requirement；3. vacuumizing: alignment outer tube one end
Evacuation holes give the insulated tubing that is assembled into one to load onto special evacuation seal clamp after, start to vacuumize；What is vacuumized
Meanwhile insulated tubing is toasted on the roasting plant specially designed, side baking, side evacuates, and baking temperature is in work temperature
On degree；4. blocking welding: right in evacuation using electric resistance welding method after vacuum degree reaches design standard (< 15Pa)
Evacuation holes carry out closure welding；5. installing attachment: by connection screw thread on outer tube upper/lower terminal vehicle；Then, band is loaded by screw thread
The box cupling of sealing ring, before dress should on screw thread brush seals rouge；Outside is set with the bushing pipe of insulation bushing as above inner tube.
Notification number is that the Chinese patent of CN101187292B discloses a kind of manufacturing method of supercritical heat-insulated oil pipe, the skill
Art scheme is: the pretreatment of 1. outer tubes includes: the heat resisting steel that material is P110 grade of steel, by the preparation size lower outer pipe material of inner tube,
Aspirating hole is beaten, outer tube wall derusting and inner tube are removed steam stove into heating together, 380 DEG C or more and kept the temperature；2. the pretreatment of inner tube:
Material is the heat resisting steel of P110 grade of steel, by materials in the tube interior under size of outer tube, heating in medium frequency is used on swollen upsetting machine, inner tube both ends alliteration
At bell shape, outer wall of inner tube derusting removes steam stove into heating together by matching request car pipe horn mouth end face and outer tube,
380 DEG C or more and isothermal holding；It is cooled to certain temperature after coming out of the stove, wraps up heat-barrier material in outer wall of inner tube, and place getter；
3. suit: the inner tube after wrapping being inserted in outer tube, and reserves weld size as required；4. welding I end: inner and outer pipes are carried out I end
Welding.Welding wire used is flux-cored wire, welds argon gas and carbon dioxide gas mixture that protective gas used is high-purity, welding
After carry out isothermal holding；5. autofrettage: being heated to inner tube and carry out autofrettage；6. II end of weldering: being welded with same method
II end of inner and outer pipes；7.x ray line flaw detection: to pipe both ends girth joint carrying out flaw detection；8. heating vacuumizes: simultaneously to inner tube heating
It is evacuated to 10-2The Pa order of magnitude；9. the stifled weldering of vacuum: blocking up weldering under vacuum conditions, and carry out reinforcement repair welding；10. magnetic powder inspection: right
Plug-hole weld seam carries out carrying out flaw detection；11. measuring and controlling thermal coefficient is 0.01W/m DEG C -0.04W/m DEG C；12. both ends vehicle
Screw thread；13. dress sealing ring applies stop-leak compound: filling sealing ring to box cupling and apply elevated-temperature seal rouge；Box cupling on 14.: it beats triangle machine and tightly marks
Note, and immediately bound round by the tight torque of defined machine and position machine；15. latus rectum: being led to using standard jack rabbit to heat-insulated pipe orifice
Diameter inspection；16. integrated testability: doing anti-internal pressure, anti-outer crowded, whole tensile load and straightness detection, the anti-internal pressure examination of room temperature respectively
Pressure is tested in 40MPa or more, anti-outer squeeze of room temperature is tested in 45MPa or more；Threading protectors on 17..
Above-mentioned first patent of invention discloses the manufacturing process of the common high vacuum insulated tubing of current thermal production well, it
The tubing used is the N80 petroleum pipe of standard, uses aluminium foil and glass fiber mesh as heat-barrier material in annular space chamber, takes out simultaneously
Vacuum (< 15Pa) come have the function that it is heat-insulated and heat preservation, apparent heat conductivity be less than 0.02W/ (m. DEG C), be suitable for injection steam
Temperature is no more than 350 DEG C, and steam injection pressure is no more than the thermal production well of 21MPa.Overcritical insulation oil disclosed in second patent of invention
Pipe is the steam injection string suitable for a kind of special hole condition thermal production well, it can satisfy injection vapor (steam) temperature and is no more than 390 DEG C, steam injection
Pressure is no more than the thermal recovery deep-well of 30MPa.Compared with patent one, annular space heat-barrier material be it is identical, technique is also similar, only manages
Material applies the higher P110 steel of intensity, therefore more resistant to high temperature, high pressure, apparent heat conductivity is at 0.01-0.04W/ (m. DEG C).This
Two kinds of insulated tubings are big to vacuum degree dependence, once vacuum degree is lost, close to Rejection standard (apparent heat conductivity 0.1W/ (m.
℃)).With oil field development form increasingly sophisticated and energy saving and efficiency increasing it is increasingly urgent, to instlated tubular heat-proof quality and use the longevity
More stringent requirements are proposed for life, and existing insulated tubing has been unable to satisfy the demand of heavy crude heat extraction low cost economic development.
Summary of the invention
The above problem existing for the insulated tubing processed the purpose of the present invention is to the prior art proposes a kind of gas
The manufacturing method of gel heat-insulation oil pipe has been made to improve and tackle key problems from tubing, heat-barrier material and processing technology, substantially increased
The stability of the insulated tubing heat-proof quality, extends service life, reduces the period use cost of instlated tubular, can satisfy
The hole condition requirement of various steam injection thermal recovery wells, is the upgraded product of existing insulated tubing, has filled up domestic and international aeroge in well
The technological gap in the heat-insulated field of cylinder.
Above-mentioned purpose of the invention can be realized by technical solution once:
The manufacturing method of aerogel heat-proof oil pipe, comprising the following steps:
Step 1, insulated tubing selection blanking: insulated tubing outer tube, inner tube and box cupling material are selected, middle external tube
It than interior pipe range, is required according to pre-stress design, outer length of tube is determined with inner tube length, and in outer tube away from processing at pipe end 500mm
Aspirating hole；And it can be marked in interior outer tube outer wall designated position rolling stock, product back-tracing；
Step 2, inner tube are swollen pier: inner tube uses external upset tubing, heating in medium frequency is used on swollen pier machine, inner tube two ends
It is expanded into bell shape, by matching request vehicle horn mouth end face；The defects of being required when swollen pier without burning, crackle, corrugation；
Step 3, derusting by sandblasting: inner tube outer surface, outer pipe internal surface are subjected to shot peening to visible metal true qualities respectively；
Step 4, heating degasification: heat-barrier material, inner tube, outer tube are put into heating furnace, kept the temperature after being heated to 400-440 DEG C
One hour, it is subsequently cooled to 75-85 DEG C；
Step 5, inner tube wrapping: the compound heat-insulation material of 1-2 layers of aerogel blanket and layer 2-3 auxiliary material composition is wrapped up in outer wall of inner tube
Material；
Step 6, suit: outer tube sleeve has been wrapped up to the interior tube outside of composite heat-insulated material mounted in step 5, and in inner tube and outside
Getter is added between pipe and inhales hydrogen agent, forms insulating sandwich；
Step 7, welding: one end of inner tube and outer tube is welded, and then applies prestressing force to inner tube with thermal stretching method,
When inner tube is elongated to design requirement, then the other end is welded, is detected after welding with X-ray line flaw detection；
Step 8, heating auxiliary vacuumize weldering and block up: vacuum taken out into weldering block apparatus and is fixed on outer tube centered on aspirating hole,
It to insulating sandwich heating, is evacuated to less than 100Pa, stifled weldering then is carried out to aspirating hole under vacuum conditions, and reinforced
Repair welding improves the leakproofness of aspirating hole；
Step 9, apparent heat conductivity test；
Step 10, assembling label；
Step 11, detection, packaging.
Above-mentioned purpose of the invention can also be realized by technical solution once:
The manufacturing method of the above-mentioned aerogel heat-proof oil pipe, outer tube described in step 1, inner tube and box cupling material are consistently
Selected from one of J55, N80, P110 steel pipe.
One hour is kept the temperature after being heated to 420 DEG C in step 4, is subsequently cooled to 80 DEG C；
Auxiliary material described in step 5 is one of aluminium foil, alkali-free cloth, inorganic glue or two or more combinations.
The test of apparent heat conductivity described in step 9 are as follows: the heat-proof quality of aerogel heat-proof oil pipe carries out 100% detection,
(m. DEG C) of apparent heat conductivity≤0.02W/ is qualification.
The label of assembling described in step 10 are as follows: in insulated tubing both ends of the thread, and beat the tight triangle mark of machine, then
Box cupling screw thread and seal groove are processed, and carries out phosphorating treatment, is coated with casing Special seal rouge, by triangle mark regulation and torque
It is required that machine is immediately bound round.
Detection described in step 11 includes that insulated tubing inner hole latus rectum inspection and the anti-internal pressure of room temperature, room temperature are anti-outer crowded, normal
Warm tensile load and straightness detection.
Packaging described in step 11 are as follows: anti-corrosive grease is applied on connection screw thread, and thread protector is installed, outer tube brush anti-decaying paint.
Compared with prior art, the present invention has following improvement:
The selection of technical scheme of aerogel heat-proof oil pipe manufacturing method provided by the invention multilayer aerogel blanket and auxiliary material
As heat-barrier material and the heat-insulating technique that vacuumizes, aerogel blanket thickness≤12mm, the insulated tubing apparent heat conductivity of production≤
0.02W/ (m. DEG C) has reached the factory technical indicator of current high vacuum insulated tubing.Tests prove that being lost in insulating sandwich
In the case where vacuum degree, apparent heat conductivity still be can achieve between 0.04W/ (m DEG C) -0.06W/ (m DEG C), reduce every
Dependence of the hot property to vacuum degree, the heat-insulated service life extends one times or more compared with high vacuum insulated tubing.It takes out in step 8 true
Sky, when aerogel heat-proof pipe is evacuated down to 100Pa, testing its thermal coefficient can achieve the thermally conductive of high vacuum insulated tubing
Factor standard namely factory calibration；And the vacuum degree of high vacuum insulated tubing needs to reach 15Pa hereinafter, supercritical heat-insulated oil pipe
Vacuum degree need to reach 0.01Pa or so, manufacturing process is more demanding, aerogel heat-proof oil pipe Applicable temperature and pressure limit
Extensively, the hole condition requirement that can satisfy various steam injection thermal recovery wells is the upgraded product of existing insulated tubing.
Specific embodiment
This explanation is further illustrated by following specific embodiments, and those skilled in the art is made more to understand the technology of the present invention
Scheme.
The manufacturing method of 1 aerogel heat-proof oil pipe of embodiment
The protection that below by taking 9.6 meters of standard insulated tubings as an example, manufacturing method of the present invention is described further, but is invented
Range is simultaneously not so limited.
1. instlated tubular selection blanking:
Step 1, insulated tubing selection blanking: (1) insulated tubing outer tube, inner tube and box cupling material is selected, former material
After material is bought, by the technical requirements of inner and outer pipes pipe workpiece quality certificate and GB/T 19830, review tubing room temperature mechanical performance and
The chemical component of tubing, formality original for material is not complete or the underproof material of reinspection is not allowed to put into production, to guarantee
The quality of tubing；(2) its middle external tube is required than interior pipe range according to pre-stress design, determines outer length of tube with inner tube length, and
Outer tube is away from processing aspirating hole at pipe end 500mm；(3) it is marked in interior outer tube outer wall designated position rolling stock, product back-tracing.
Step 2, inner tube are swollen pier: inner tube uses external upset tubing, heating in medium frequency is used on swollen pier machine, inner tube two ends
It is expanded into bell shape, by matching request vehicle horn mouth end face, the defects of when swollen pier requires without burning, crackle, corrugation；
Step 3, derusting by sandblasting: inner tube outer surface, outer pipe internal surface are subjected to shot peening to visible metal true qualities respectively；
Step 4, heating degasification: heat-barrier material, inner tube, outer tube are put into heating furnace, and it is small that one is kept the temperature after being heated to 420 DEG C
When, it is subsequently cooled to 80 DEG C；
Step 5, inner tube wrapping: the composite heat-insulated material of 2 layers of aerogel blanket and 2 layers of auxiliary material composition is wrapped up in outer wall of inner tube；
Step 6, suit: outer tube sleeve has been wrapped up to the interior tube outside of composite heat-insulated material mounted in step 5, and in inner tube and outside
Getter is added between pipe and inhales hydrogen agent, forms insulating sandwich；
Step 7, welding: one end of inner tube and outer tube is welded, and then applies prestressing force to inner tube with thermal stretching method,
When inner tube is elongated to design requirement, then the other end is welded, detected after welding with X-ray line flaw detection, not by GB/3323 evaluation
It is qualification lower than II grade；
Step 8, heating auxiliary vacuumize weldering and block up: vacuum taken out into weldering block apparatus and is fixed on outer tube centered on aspirating hole,
It to insulating sandwich heating, is evacuated to less than 100Pa, stifled weldering then is carried out to aspirating hole under vacuum conditions, and reinforced
Repair welding improves the leakproofness of aspirating hole；
Step 9, apparent heat conductivity test: the heat-proof quality of aerogel heat-proof oil pipe carries out 100% detection, apparent heat conductivity
(m. DEG C) of≤0.02W/ is standard；
Step 10, assembling label；Including: (1) carries out BCSG by API SPEC 5B standard in insulated tubing both ends of the thread
Screw thread process and inspection；(2) triangle machine is made by API SPEC 5C standard tightly to mark；(3) box cupling screw thread and seal groove are processed,
And carry out phosphorating treatment；(4) it is coated with casing Special seal rouge, is immediately bound round by triangle mark regulation and torque demand machine；
Step 11, detection, packaging: wherein detection includes carrying out 100% overall length to instlated tubular tube body using standard jack rabbit
Latus rectum inspection and anti-outer crowded, the room temperature tensile load of the anti-internal pressure of room temperature, room temperature and straightness detection；It is packaged as applying on connection screw thread
Anti-corrosive grease, and thread protector is installed, outer tube brush anti-decaying paint, with module lacquer print product designation.
Outer tube described in step 1, inner tube and box cupling material are J55 steel pipe.
Auxiliary material described in step 5 is aluminium foil.
The manufacturing method of 2 aerogel heat-proof oil pipe of embodiment
Difference with embodiment 1 is: outer tube described in step 1, inner tube and box cupling material are N80 steel pipe；
Step 4, heating degasification: heat-barrier material, inner tube, outer tube are put into heating furnace, and it is small that one is kept the temperature after being heated to 400 DEG C
When, it is subsequently cooled to 75 DEG C；
In step 5, the compound heat-insulation material of 1 layer of aerogel blanket and 3 layers of alkali-free cloth composition inner tube wrapping: is wrapped up in outer wall of inner tube
Material.
Other are the same as embodiment 1.
The manufacturing method of 3 aerogel heat-proof oil pipe of embodiment
Difference with embodiment 1 is: outer tube described in step 1, inner tube and box cupling material are P110 steel pipe；
Step 4, heating degasification: heat-barrier material, inner tube, outer tube are put into heating furnace, and it is small that one is kept the temperature after being heated to 440 DEG C
When, it is subsequently cooled to 85 DEG C；
In step 5, the compound heat-insulation material of 2 layers of aerogel blanket and 3 layers of inorganic glue composition inner tube wrapping: is wrapped up in outer wall of inner tube
Material.
Other are the same as embodiment 1.
The above content is combine specific preferred embodiment to the further description done of the present invention, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, is all considered as the right that the present invention submits and wants
Seek scope of patent protection determined by book.
Claims (8)
1. the manufacturing method of aerogel heat-proof oil pipe, which comprises the following steps:
Step 1, insulated tubing selection blanking: selecting insulated tubing outer tube, inner tube and box cupling material, in middle external tube ratio
Pipe range is required according to pre-stress design, determines outer length of tube with inner tube length, and in outer tube away from processing pumping at pipe end 500mm
Hole；
Step 2, inner tube are swollen pier: inner tube uses external upset tubing, and heating in medium frequency is used on swollen pier machine, inner tube two ends are expanded into
Bell shape, by matching request vehicle horn mouth end face；
Step 3, derusting by sandblasting: inner tube outer surface, outer pipe internal surface are subjected to shot peening to visible metal true qualities respectively；
Step 4, heating degasification: heat-barrier material, inner tube, outer tube are put into heating furnace, and it is small that one is kept the temperature after being heated to 400-440 DEG C
When, it is subsequently cooled to 75-85 DEG C；
Step 5, inner tube wrapping: the composite heat-insulated material of 1-2 layers of aerogel blanket and layer 2-3 auxiliary material composition is wrapped up in outer wall of inner tube；
Step 6, suit: having wrapped up the interior tube outside of composite heat-insulated material mounted in step 5 for outer tube sleeve, and inner tube and outer tube it
Between be added getter and inhale hydrogen agent, formed insulating sandwich；
Step 7, welding: one end of inner tube and outer tube is welded, and then applies prestressing force to inner tube with thermal stretching method, to interior
When pipe is elongated to design requirement, then the other end is welded, is detected after welding with X-ray line flaw detection；
Step 8, that heating auxiliary vacuumizes weldering is stifled: vacuum is taken out into weldering block apparatus and is fixed on outer tube centered on aspirating hole, to every
Hot interlayer heating is evacuated to less than 100Pa, then carries out stifled weldering to aspirating hole under vacuum conditions, and carry out reinforcement repair welding；
Step 9, apparent heat conductivity test；
Step 10, assembling label；
Step 11, detection, packaging.
2. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that outer described in step 1
Pipe, inner tube and box cupling material are consistently selected from one of J55, N80, P110 steel pipe.
3. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that be heated to 420 in step 4
One hour is kept the temperature after DEG C, is subsequently cooled to 80 DEG C.
4. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that auxiliary described in step 5
Material is one of aluminium foil, alkali-free cloth, inorganic glue or two or more combinations.
5. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that view described in step 9
Determination of conductive coefficients are as follows: the heat-proof quality of aerogel heat-proof oil pipe carries out 100% detection, apparent heat conductivity≤0.02W/ (m. DEG C)
For qualification.
6. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that group described in step 10
Dress label are as follows: in insulated tubing both ends of the thread, and the tight triangle mark of machine is beaten, then processes box cupling screw thread and seal groove, and
Phosphorating treatment is carried out, casing Special seal rouge is coated with, is immediately bound round by triangle mark regulation and torque demand machine.
7. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that inspection described in step 11
Survey includes the inspection of insulated tubing inner hole latus rectum and anti-outer crowded, the room temperature tensile load of the anti-internal pressure of room temperature, room temperature and straightness detection.
8. the manufacturing method of aerogel heat-proof oil pipe according to claim 1, which is characterized in that packet described in step 11
Dress are as follows: anti-corrosive grease is applied on connection screw thread, and thread protector is installed, outer tube brush anti-decaying paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004579.7A CN109986303A (en) | 2018-01-02 | 2018-01-02 | The manufacturing method of aerogel heat-proof oil pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004579.7A CN109986303A (en) | 2018-01-02 | 2018-01-02 | The manufacturing method of aerogel heat-proof oil pipe |
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| CN109986303A true CN109986303A (en) | 2019-07-09 |
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| CN201810004579.7A Pending CN109986303A (en) | 2018-01-02 | 2018-01-02 | The manufacturing method of aerogel heat-proof oil pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111594060A (en) * | 2020-07-13 | 2020-08-28 | 盘锦华晨石油装备制造有限公司 | Non-vacuum heat insulation oil pipe and production process thereof |
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| CN118856959A (en) * | 2024-09-27 | 2024-10-29 | 南京圣诺热管有限公司 | Green manufacturing method for high-efficiency long heat pipe with ultra-large flow rate and high-efficiency long heat pipe |
| CN118856959B (en) * | 2024-09-27 | 2024-12-24 | 南京圣诺热管有限公司 | Green manufacturing method for super-large-flow high-efficiency long heat pipe and high-efficiency long heat pipe |
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