CN101979169B - Local quick high-temperature heating device for pipe wall hole circumference - Google Patents
Local quick high-temperature heating device for pipe wall hole circumference Download PDFInfo
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- CN101979169B CN101979169B CN2010105041688A CN201010504168A CN101979169B CN 101979169 B CN101979169 B CN 101979169B CN 2010105041688 A CN2010105041688 A CN 2010105041688A CN 201010504168 A CN201010504168 A CN 201010504168A CN 101979169 B CN101979169 B CN 101979169B
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Abstract
The invention discloses a local quick high-temperature heating method for pipe wall hole circumference and a device thereof. A radiation heat shield and an adapting plate are arranged inside and outside a heating area, and high-temperature airflow produced by a burner impacts the area to be heated on the surface of a heating pipe and radiates the heat shield to produce directional high-temperature heat radiation effect to perform local quick high-temperature heating on the pipe wall hole circumference area on the surface of the pipe; and meanwhile, the high-temperature airflow enters the pipe through a pipe wall hole to impact and heat the adapting plate, and local quick high-temperature heating is performed on the pipe wall hole circumference area in the pipe by using the impact disturbance of the high-temperature airflow and the directional high-temperature heat radiation effect of the adapting plate, so the local quick high-temperature heating of the pipe wall hole circumference area is realized. The method can realize local quick high-temperature heating of the pipe wall hole circumference, enables the heating temperatures of the inner and outer surfaces of the pipe wall to reach 1,150 to 1,200 DEG C within 30 to 35 minutes, and enables the surface oxidation burning thickness to be less than 0.5 millimeter so as to meet the process requirement.
Description
Technical field
The present invention relates to a kind of method and apparatus of realizing local quick high-temp heating; This method and device are special to the local heat before the nuclear power main steam nozzle molding and design, also applicable to similar occasion such as the local quick high-temp heating around all other ducts cinclides.
Background technology
Super pipeline is the important component part of nuclear power jet chimney, and traditional ozzle adopts welding manner with being connected of pipeline, and difficult quality satisfies the working condition requirement that nuclear power uses.The ozzle and the solid forging moulding of new nuclear power designing requirement main steam make the continuous seamless that is connected of ozzle and pipeline, to satisfy the needs of nuclear power technology development.Of Chinese invention patent CN101767171A and CN101767172A: need the position of moulding ozzle to be provided with preset holes at qualified pipe, the size of preset holes is to confirm according to the thickness capable of using of pipe and the size behind the nozzle molding.According to the requirement of extrusion forming process, need in 30 ~ 35min, f350 ~ 400mm zone around the preset holes evenly be heated to 1150 ℃, and surface oxidation scaling loss thickness is less than 0.8mm.
Traditional overall heating means power consumption is high, heat time heating time is long, iron loss is big, and can not satisfy the heating process requirement of ozzle extrusion modling.Patent CN1191162A is a Fast Heating of utilizing the electromagnetic induction fuel factor that the steel billet that is in the coil is carried out; Be not suitable for the requirement that only the regional area Fast Heating around the preset holes on the pipe is heated up in this research, and the main steam diameter of section in this research big (more than the f800mm), pipe are grown, a plurality of preset holes (more than 4 or 4) are distributed in the different longitudinally radial positions of pipe.The electricity that is used for of patent CN201197641 and CN201542449U is fried in shallow oil localized hyperthermia's heater of baking device, can not satisfy the local fast heating technological requirement before the ozzle extrusion modling in this research.
Summary of the invention
To the above-mentioned deficiency that prior art exists, the heat method that the object of the present invention is to provide a kind of part that is used for ducts cinclides peripheral region to be rapidly heated.
The present invention has also designed a kind of new heater based on this method.
Technical scheme of the present invention is achieved in that and is used for the ducts cinclides method of local quick high-temp heating on every side; At first; Around burner and pipe surface pipe tap, need to be provided with between the area heated radiation heat insulation cover; Simultaneously, the adaptive dish over against pipe tap is set in pipeline, cooperates with inner-walls of duct to form a heating cavity; Utilize adaptive dish retaining to connect from pipe tap and get into the high temperature gas flow in the pipeline, the radiation areas that make adaptive dish are to need area heated around the inner-walls of duct pipe tap; Then; The high temperature gas flow IMPULSIVE HEATING pipe surface that utilizes burner to produce needs area heated and the directed high temperature heat radiation effect of radiation heat insulation cover that pipe surface pipe tap peripheral region is carried out local quick high-temp heating; Simultaneously; High temperature gas flow gets into the adaptive dish of IMPULSIVE HEATING in the pipeline through pipe tap; Utilize the shock vibration of high temperature gas flow and the directed high temperature heat radiation effect of adaptive dish that inner-walls of duct pipe tap peripheral region is carried out local quick high-temp heating, thereby realize the local quick high-temp heating of pipe tap peripheral region.
According to the heater of above-mentioned heating means design, it comprises burner, and burner outlet is provided with trumpet-shaped radiation heat insulation cover, and radiation heat insulation cover front end has and the horn mouth that needs the heating region edge to fit around the pipe surface pipe tap; This heater also disposes adaptive dish, and adaptive dish is positioned at pipeline over against pipe tap, and adaptive dish has and the port that needs the heating region edge to fit around the inner-walls of duct hole.
Further, the said adaptive face of trying to get to the heart of a matter is a rectangle, and middle part, adaptive dish front is provided with arc pan bottom shape pit, pit oral area and adaptive dish circumferential flange smooth excessiveness, and adaptive dish front has the arc-shaped protrusions of fitting with inner-walls of duct along the pipeline axial two ends.
Said burner is propane-air burner, and burner has delivery of propane pipe and air delivery pipe.
Compare prior art, the present invention has following advantage:
The high temperature gas flow that rationalization of the present invention air-the propane flow burning produces impacts and is heated the zone; Pipe wall to the pipe tap place adopts two-sided strengthened Convective Heating; Utilize directed high temperature heat radiation effect that the pipe tap peripheral region is carried out local quick high-temp heating simultaneously, thereby local quick high-temp heat around realizing the ducts cinclides.Evenly heated in f350 ~ 400mm zone around the present invention can realize the super pipeline preset holes; And the surfaces externally and internally heating-up temperature that in 30 ~ 35min, makes pipe wall all reaches 1150 ~ 1200 ℃; And surface oxidation scaling loss thickness is less than 0.5mm, thereby satisfies localized hyperthermia's heating requirements of ozzle extrusion process requirement.
Description of drawings
Fig. 1-structural representation of the present invention.
The adaptive dish structural representation of Fig. 2-the present invention.
Fig. 3-Fig. 2 A-A cutaway view.
Fig. 4-Fig. 2 B-B cutaway view.
Wherein, 1-delivery of propane pipe; The 2-air delivery pipe; The 3-burner; 4-radiation heat insulation cover; The adaptive dish of 5-; The 6-pipeline; The 7-pipe tap; The 8-pit; The 9-arc-shaped protrusions.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The present invention is that heating means are: around burner and pipe surface pipe tap, need to be provided with between the area heated radiation heat insulation cover earlier; Adaptive dish over against pipe tap is set in pipeline simultaneously; Utilize adaptive dish retaining to connect and get into the high temperature gas flow in the pipeline from pipe tap; Cooperate a heating of formation cavity with inner-walls of duct, the radiation areas that make adaptive dish are to need area heated around the inner-walls of duct pipe tap; The high temperature gas flow that then burner is produced needs area heated with the velocity shock pipe surface more than the 80m/s; Utilize the directed high temperature heat radiation effect of radiation heat insulation cover that pipe surface pipe tap peripheral region is carried out local quick high-temp heating; Making high temperature gas flow pass through pipe tap simultaneously gets in the pipeline; Utilize the directed high temperature heat radiation effect of adaptive dish that inner-walls of duct pipe tap peripheral region is carried out local quick high-temp heating, thereby realize the pipe tap Fast Heating of specific region on every side.
According to the heater of above-mentioned heating means design referring to Fig. 1; As can be seen from Figure 1; This heater comprises burner 3; Burner 3 outlets are provided with trumpet-shaped radiation heat insulation cover 4, and radiation heat insulation cover 4 front ends have and the horn mouth that needs the heating region edge to fit around the pipe surface pipe tap; This heater also disposes adaptive dish 5, and adaptive dish 5 is positioned at pipeline 6 over against pipe tap 7, and adaptive dish 5 has and the port that needs the heating region edge to fit around the inner-walls of duct pipe tap.
Said adaptive dish 5 bottom surfaces are rectangle; Adaptive dish 5 positive middle parts are provided with arc pan bottom shape pit 8; Pit oral area and adaptive dish circumferential flange smooth excessiveness, adaptive dish 5 fronts have the arc-shaped protrusions 9 of fitting with inner-walls of duct along the pipeline axial two ends, see Fig. 2, Fig. 3 and Fig. 4.
Said burner 3 is propane-air burner, and burner has delivery of propane pipe 1 and air delivery pipe 2.
The flowing of the air that propane that the present invention is sent into by delivery of propane pipe 1 through burner 3 rationalizations and air delivery pipe 2 are sent into, mixing and burning; Form the peripheral region of suitable high temperature gas flow (more than the speed 80m/s) impulse piping pipe tap 7; The convection heat transfer' heat-transfer by convection of strengthening flow and tube wall; Simultaneously, utilize the directed high temperature heat radiation effect of radiation heat insulation cover 4 that pipeline 6 outer wall surface around the pipe tap 7 are carried out local quick high-temp heating.The local quick high-temp heating of inwall around the ducts cinclides 7; Be that the high temperature gas flow that utilizes the burning of pipe tap 7 lead-in portion propane to produce cooperates strong disturbance in the vestibule that forms, washes away at adaptive dish and inner-walls of duct; Convection heat transfer' heat-transfer by convection between strengthening flow and tube wall; Simultaneously, utilize the directed hyperthermia radiation effect of adaptive dish that pipeline 6 inner wall surface around the pipe tap 7 are carried out local quick high-temp heating.The inner heating of pipeline 6 tube walls is to utilize the material internal conduction heat transfer to carry out, and adopts said method to implementing two-sided heating inside and outside pipeline 6 tube walls, can effectively shorten the local heat time, reduces oxidization burning loss.
Details are as follows for processing of local high temperature: the pipeline 6 that will be provided with pipe tap 7 place burner 3, expanding radiation heat insulation cover 4 under, the burner center of pipe tap 7 facing upper.Adaptive dish 5 places in pipeline 6 pipelines, be positioned at pipe tap 7 under.The purposes of burner 3 are air of sending into of propane that delivery of propane pipe 1 is sent into and air delivery pipe 2 by certain way mix, burning; While is by the effect of radiation heat insulation cover 4 and adaptive dish 5; (this area size of nuclear power main steam super pipeline is diameter f350 ~ 400mm), local heat is rapidly and uniformly carried out on two sides inside and outside pipeline 6 tube walls of pipe tap 7 peripheral regions to the high-temperature area that pipeline 6 outer wall surface and inner wall surface at pipe tap 7 place all forms certain size.Through the present invention, can in local heat time 30 ~ 35min, make the surfaces externally and internally heating-up temperature all reach 1150 ~ 1200 ℃, the heating region scaling loss is few, and surface oxidation scaling loss thickness reaches localized hyperthermia's heating purposes of ozzle extrusion process requirement less than 0.5mm.
The present invention considers some pipe wall thicker (super pipeline like standard is 49.8mm), so the two-sided heating of design is to satisfy the purpose of quick high-temp heating and tube wall internal-external temperature difference.The high temperature gas flow that the present invention utilizes the burning of pipe tap lead-in portion propane to produce is with localized hyperthermia's heating of effective promotion ducts cinclides peripheral region inner surface.Utilize adaptive dish retaining to connect and get into the high temperature gas flow in the pipeline from pipe tap; Cooperate relatively independent cavity of formation with inner-walls of duct; High temperature gas flow impact through pipe tap gets in the cavity is sprawled after on the adaptive dish; In this cavity, form strong disturbance, its inner surface of Fast Heating forms red-hot hyperthermia radiation and carries out localized hyperthermia's heating in the face of inner wall area around the ducts cinclides.
Evenly heat in f350 ~ 400mm zone around the invention solves nuclear power main steam ozzle preset holes; The surfaces externally and internally heating-up temperature all reaches 1150 ~ 1200 ℃; Heat time heating time 30 ~ 35min; The heating region scaling loss is few, and surface oxidation scaling loss thickness reaches localized hyperthermia's heating purposes of ozzle extrusion process requirement less than 0.5mm.
The present invention heats to the localized hyperthermia of nuclear power main steam ozzle preset holes peripheral region specially and designs, and this heating means of while also can be promoted the local quick high-temp that is applicable to around other similar pipeline apertures with device and heat.
Claims (2)
1. be used for ducts cinclides local quick high-temp heater on every side; It is characterized in that: it comprises burner (3); Burner (3) outlet is provided with trumpet-shaped radiation heat insulation cover (4), and radiation heat insulation cover front end has and the horn mouth that needs the heating region edge to fit around the pipe surface pipe tap; This heater also disposes adaptive dish (5), and adaptive dish (5) is positioned at pipeline (6) over against pipe tap (7), and adaptive dish has and the port that needs the heating region edge to fit around the inner-walls of duct pipe tap; Said burner is propane-air burner, and burner (3) has delivery of propane pipe (1) and air delivery pipe (2).
2. heater according to claim 1; It is characterized in that: said adaptive dish (5) bottom surface is a rectangle; The positive middle part of adaptive dish (5) is provided with arc pan bottom shape pit (8); Pit oral area and adaptive dish circumferential flange smooth excessiveness, adaptive dish (5) front has the arc-shaped protrusions (9) of fitting with inner-walls of duct along the pipeline axial two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105041688A CN101979169B (en) | 2010-10-12 | 2010-10-12 | Local quick high-temperature heating device for pipe wall hole circumference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105041688A CN101979169B (en) | 2010-10-12 | 2010-10-12 | Local quick high-temperature heating device for pipe wall hole circumference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101979169A CN101979169A (en) | 2011-02-23 |
| CN101979169B true CN101979169B (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105041688A Expired - Fee Related CN101979169B (en) | 2010-10-12 | 2010-10-12 | Local quick high-temperature heating device for pipe wall hole circumference |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794329A (en) * | 2012-08-31 | 2012-11-28 | 渤海重工管道有限公司 | Manufacturing equipment for nozzle of main steam super pipeline of nuclear power and pulling and extrusion manufacturing process for nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120643U (en) * | 1992-03-26 | 1992-11-04 | 四川石油管理局川东开发公司 | Seamless tee make-up apparatus |
| CN101310884A (en) * | 2008-07-01 | 2008-11-26 | 宁波连通设备制造有限公司 | Manifold drawing technique and special-purpose equipment thereof |
| CN201395617Y (en) * | 2009-05-26 | 2010-02-03 | 武汉一冶钢结构有限责任公司 | Uniform heating auxiliary device for container whole heat treatment |
| CN101961735A (en) * | 2010-08-31 | 2011-02-02 | 武汉重工铸锻有限责任公司 | Local heater used in molding of pipe orifice of main steam super pipe and method for heating master pipe blank by using same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277749A (en) * | 1993-03-26 | 1994-10-04 | Sumitomo Metal Ind Ltd | Hot extruding equipment |
| JPH10180349A (en) * | 1996-12-24 | 1998-07-07 | Sanyo Special Steel Co Ltd | Flux diverter |
| EP1264646A1 (en) * | 2001-06-07 | 2002-12-11 | Alcan Technology & Management AG | Device and method for the manufacturing of profiled metal rods |
-
2010
- 2010-10-12 CN CN2010105041688A patent/CN101979169B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120643U (en) * | 1992-03-26 | 1992-11-04 | 四川石油管理局川东开发公司 | Seamless tee make-up apparatus |
| CN101310884A (en) * | 2008-07-01 | 2008-11-26 | 宁波连通设备制造有限公司 | Manifold drawing technique and special-purpose equipment thereof |
| CN201395617Y (en) * | 2009-05-26 | 2010-02-03 | 武汉一冶钢结构有限责任公司 | Uniform heating auxiliary device for container whole heat treatment |
| CN101961735A (en) * | 2010-08-31 | 2011-02-02 | 武汉重工铸锻有限责任公司 | Local heater used in molding of pipe orifice of main steam super pipe and method for heating master pipe blank by using same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794329A (en) * | 2012-08-31 | 2012-11-28 | 渤海重工管道有限公司 | Manufacturing equipment for nozzle of main steam super pipeline of nuclear power and pulling and extrusion manufacturing process for nozzle |
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| CN101979169A (en) | 2011-02-23 |
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