CN108843866A - A kind of connection method of high-temperature service adapter tube - Google Patents
A kind of connection method of high-temperature service adapter tube Download PDFInfo
- Publication number
- CN108843866A CN108843866A CN201810862204.4A CN201810862204A CN108843866A CN 108843866 A CN108843866 A CN 108843866A CN 201810862204 A CN201810862204 A CN 201810862204A CN 108843866 A CN108843866 A CN 108843866A
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- welding
- ribs
- connection method
- adapter tube
- supervisor
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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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of connection method of high-temperature service adapter tube, it is characterised in that it includes the following steps：The Zhi Guanti that will need to be connected first（1）Root formed ribs（2）, and thinned place is formed in the outer ring of ribs（3）, then place is being thinned（3）Outer ring formed pedestal groove（4）；Secondly, being responsible for（5）Connecting portion is processed to be formed and pedestal groove（4）The welding groove of matching；Third, by Zhi Guanti（1）And supervisor（5）Butt welding forms butt weld together.The present invention has the characteristics that uniform force, the factor of stress concentration are small, bearing capacity is high；And pedestal and supervisor（5）Welding, welding position are transferred to the connection at supervisor position from the connection of adapter tube and supervisor, fillet weld are converted to butt weld, performance is greatly improved.
Description
Technical field
The present invention relates to a kind of connection methods of high-temperature service adapter tube, belong to pipe fitting welding technical field.Pass through
The pedestal of branch pipe welded directly to the run pipe is responsible for connect, suitable for the use under the complex working conditions such as high temperature under petroleum and petrochemical industry.
Background technique
Pipe branch pipe fitting can be divided into two kinds of common forms of threeway and branch holder.Threeway type in domestic industry pipeline
It is various, in the past usually using forms such as casting three-way, welding tee, extruded piping branch tees.Threeway is normal in novel pipe-line system
With component, but relative under worst hot case system, general casting three-way, welding tee and extruded piping branch tee, which are not able to satisfy, to be made
With requiring, the either distribution of welding stress or shape stress can all cause the failure of product at high temperature.Therefore, it sends out
The connection structure of bright this suitable high-temperature service adapter tube makes welding position be transferred to supervisor from the connection of adapter tube and supervisor
Fillet weld is converted to butt weld by the connection at position, and uniform force, the factor of stress concentration are small, bearing capacity is high, satisfaction pair
The requirement of 100% ray detection of weld seam.
Forging and machining adapter tube are suitable for being pressurized under the operating condition more, situation is more complex；Built-up welding is molding to be connect
Guan Ze can be used in the better simply pipe-line system of operating condition.
Summary of the invention
The purpose of the present invention is, in complex conditions such as top load, high temperature, be unable to satisfy for traditional pipe fitting connection type
The problem of requirement, invents a kind of connection type of high-temperature service adapter tube, constructs based on ASME NC-3643.4
(a) reinforcement of -1 extruding outlet, innovative design is completed on traditional adapting method.
The technical scheme is that：
A kind of connection method of high-temperature service adapter tube, it is characterised in that it includes the following steps：The branch pipe that will need to be connected first
The root of body 1 forms ribs 2, and is formed in the outer ring of ribs and place 3 is thinned, then forms pedestal slope in the outer ring that place 3 is thinned
Mouth 4；Secondly, processing the welding groove to be formed and be matched with pedestal groove 4 being responsible for 5 connecting portions；Third, by Zhi Guanti 1 and master
5 butt welding of pipe forms butt weld together.
The ribs is made and to be formed by forging, machining or weld metal built-up welding.
When the described Zhi Guanti pressure-bearing, shoulder inner wall is maximum stress intensity distributed area, passes through and increases ribs 2 and branch
The tube body angle axis angle θ suitably increases inside and outside radius of corner R1 and R2, can effectively reduce branch pipe base inner wall corner and shoulder
The stress intensity that portion is subject to.
The thinned place 3 is in up-small and down-big cone structure.
As shown in Figure 1, a kind of connection method of suitable high-temperature service adapter tube, it is characterised in that the knot of shown connection type
Structure includes Zhi Guanti 1, ribs 2, the thinned place 3 of pedestal and pedestal groove 4.Its transition portion is ribs 2, and base end is subtracted
It is thin make be responsible for wall thickness it is equal with pedestal wall thickness, and pedestal 2 by pedestal groove 4 and supervisor ontology 3 welding so that welding position from
The connection of adapter tube and supervisor are transferred to the connection at supervisor position, fillet weld are converted to butt weld, weld seam position passes through 100%
Ray detects whether it meets performance requirement.
According to the applicant's test research and analysis shows, the Zhi Guanti 1 in pressure-bearing, answer for maximum by shoulder inner wall
It power intensity distribution area can by suitably increasing changeover portion angle theta angle at Fig. 1 or suitably increasing inside and outside radius of corner R1 and R2
Effectively to reduce the stress intensity that 2 inner wall corner of branch pipe pedestal and shoulder are subject to.
Ribs shown in Fig. 1 is made of the method that can be applied by forging, machining or weld metal heap.Forging and machine
The adapter tube of machine-shaping is suitable for being pressurized under the operating condition more, situation is more complex；The molding adapter tube of built-up welding then can be used in work
In the better simply pipe-line system of condition.
This structure type of the adapter tube eliminates the irregular and shape mutation of weld seam, shifts welding position, eliminates
Originally dog-ear position welding fabrication bring shape stress and welding stress shown in Fig. 2, elimination increase in high-load region
The possibility of weld seam, while the creep that weld seam generates under metal temperature is also eliminated, guarantee adapter tube in high temperature, top load environment
Safe and reliable operation down.
Fillet weld is changed into butt weld by the connection type, and fillet weld has molten metal reactor to apply on one side, do not have on one side
Have, compared with the butt weld of through welding, aspect of performance can be lower, it is difficult to meet Product Acceptance Review requirement.
The adapter tube pedestal is thinned while guaranteeing wall thickness, also to guarantee the intact of tube body inner arc, reduction pair at outer arc
The influence of tube fluid.
The beneficial effects of the invention are as follows：
The configuration of the present invention is simple, it is easily molded, supervisor with, mutually to pass through connection, butt weld is convenient for square using ray detection etc. between branch pipe
Method carry out volume inspection, effectively increase the safety of structure, and meet inservice inspection reachability requirements, meet top load and
Use under the complex working conditions such as high temperature.
Detailed description of the invention
Fig. 1 is adapter tube attachment structure schematic diagram of the invention.
Fig. 2 is the contrast schematic diagram of connection type and prior welding mode of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-2.
A kind of connection method of high-temperature service adapter tube, it includes the following steps：First by the root for the Zhi Guanti 1 that need to be connected
Portion forms ribs 2, and ribs is made and to be formed by forging, machining or weld metal built-up welding.Ribs 2 and branch pipe body axis
Angle theta angle directly affects branch pipe bearing capacity, therefore, when it is implemented, the angle θ is the bigger the better, while can also be by increasing or appropriate
Inside and outside radius of corner R1 and R2 is increased effectively to reduce the stress intensity that branch pipe base inner wall corner and shoulder are subject to.,
It is secondary, the thinned place 3 of positive cone-shaped should be formed in the outer ring of ribs, third forms pedestal groove 4 in the outer ring that place 3 is thinned；The
Four, the welding groove to be formed and be matched with pedestal groove 4 is processed being responsible for 5 connecting portions；Finally, again using conventional welding method
Zhi Guanti 1 is formed into butt weld together with 5 butt welding of supervisor.
As shown in Figure 1, the structure that connection method of the invention is used includes Zhi Guanti 1, ribs 2,3 and of the thinned place of pedestal
Pedestal groove 4.Its transition portion is ribs 2, and base end, which is thinned, keeps supervisor's wall thickness equal with pedestal wall thickness, and pedestal 2
It is welded by pedestal groove 4 and supervisor's ontology 3, so that welding position is transferred to the company at supervisor position from the connection of adapter tube and supervisor
It connects, fillet weld is converted into butt weld, weld seam position detects whether it meets performance requirement by 100% ray.
According to the applicant's test research and analysis shows, the Zhi Guanti 1 in pressure-bearing, answer for maximum by shoulder inner wall
It power intensity distribution area can by suitably increasing changeover portion angle theta angle at Fig. 1 or suitably increasing inside and outside radius of corner R1 and R2
Effectively to reduce the stress intensity that 2 inner wall corner of branch pipe pedestal and shoulder are subject to.
Ribs shown in Fig. 1 is made of the method that can be applied by forging, machining or weld metal heap.Forging and machine
The adapter tube of machine-shaping is suitable for being pressurized under the operating condition more, situation is more complex；The molding adapter tube of built-up welding then can be used in work
In the better simply pipe-line system of condition.Structure type of the invention eliminates the irregular and shape mutation of weld seam, shifts weld part
Position is eliminated dog-ear position welding fabrication bring shape stress and welding stress shown in Fig. 2 originally, is eliminated in high-load region
The interior possibility for increasing weld seam, while the creep that weld seam generates under metal temperature is also eliminated, guarantee that adapter tube is carried in high temperature, height
Safe and reliable operation under lotus environment.Fillet weld is changed into butt weld by the present invention, and fillet weld has molten metal reactor to apply on one side,
Do not have on one side, compared with the butt weld of through welding, aspect of performance can be lower, it is difficult to meet Product Acceptance Review requirement.
Present invention adapter tube pedestal is thinned as at outer arc, thick while guaranteeing wall thickness, also guarantee tube body inner arc is intact,
The influence to tube fluid is reduced, bearing capacity is greatly strengthened.
Details are as follows：
Embodiments of the present invention can be divided into 5 steps.First according to the extruding outlet of ASME NC-3643.4 (a) -1
Reinforcement and the drawing requirement of client determine the specific size of joint pipe structure, as shown in Figure 1, following construction ginseng can be determined
Number：Manifold size D, weld spacing W, ribs angle, θ, mouth of pipe wall thickness t, round radius R1 and fillet radius R2.Such as
Shown in Fig. 1, Zhi Guanti 1 is connected with main pipe 5 by butt-welded connection method.The Zhi Guanti 1 with by ribs
2, the pedestal that pedestal is thinned place 3 and pedestal groove 4 forms is monolithic construction, can by forging or mach mode at
Shape uses the integrity of 100% ultrasound examination entirety, prepares for lower step process after forming.Then by the knot of forming
Pedestal is connected by structure with supervisor's ontology by welding, as shown in Fig. 2, conventional coupling arrangement is fillet weld, is changed into
Novel connection type butt weld facilitates detection, and performance is improved, and then polishes weld seam by polishing and carries out to weld seam
100% ray detection meets the requirement of inservice inspection accessibility to guarantee the safety of structure.
Part that the present invention does not relate to is identical as existing technology or can be realized by using the prior art.
Claims (4)
1. a kind of connection method of high-temperature service adapter tube, it is characterised in that it includes the following steps：The branch that will need to be connected first
Tube body（1）Root formed ribs（2）, and thinned place is formed in the outer ring of ribs（3）, then place is being thinned（3）Outer ring
Form pedestal groove（4）；Secondly, being responsible for（5）Connecting portion is processed to be formed and pedestal groove（4）The welding groove of matching；The
Three, by Zhi Guanti（1）And supervisor（5）Butt welding forms butt weld together.
2. connection method according to claim 1, it is characterized in that the ribs passes through forging, machining or weld seam gold
Belong to built-up welding to make to be formed.
3. connection method according to claim 1, it is characterized in that shoulder inner wall is maximum when the described Zhi Guanti pressure-bearing
Stress intensity distributed area, by increasing ribs（2）With branch pipe body axis angle theta angle or suitably increase inside and outside radius of corner R1
And R2, it can effectively reduce the stress intensity that branch pipe base inner wall corner and shoulder are subject to.
4. connection method according to claim 1, it is characterized in that the thinned place（3）In up-small and down-big conical surface knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862204.4A CN108843866A (en) | 2018-08-01 | 2018-08-01 | A kind of connection method of high-temperature service adapter tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862204.4A CN108843866A (en) | 2018-08-01 | 2018-08-01 | A kind of connection method of high-temperature service adapter tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843866A true CN108843866A (en) | 2018-11-20 |
Family
ID=64192167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810862204.4A Pending CN108843866A (en) | 2018-08-01 | 2018-08-01 | A kind of connection method of high-temperature service adapter tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697653A (en) * | 2019-11-16 | 2020-01-17 | 中化泉州石化有限公司 | Safety structure for improving reliability of high-temperature collecting furnace tube and operation method |
| CN112780849A (en) * | 2021-01-05 | 2021-05-11 | 中国石油大学(北京) | Unequal wall thickness pipeline with internal transition section and design method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2109915A (en) * | 1936-02-27 | 1938-03-01 | Standard Oil Co | Tubular connection |
| US2981556A (en) * | 1957-05-16 | 1961-04-25 | Bonney Forge & Tool Works | Welding stress-free outlet fitting |
| US3342209A (en) * | 1963-08-21 | 1967-09-19 | Hiltscher | Unsymmetrical connection-piece nozzle |
| US3392994A (en) * | 1966-06-16 | 1968-07-16 | Bonney Forge & Foundry Inc | Connector means for pressure pipelines |
| DE2305424A1 (en) * | 1973-02-03 | 1974-08-22 | Mannesmann Roehren Werke Ag | Connecting pipe for welding to pressure vessels - with smooth transition to welded flange |
| EP0293721B1 (en) * | 1987-06-04 | 1991-05-29 | Siemens Aktiengesellschaft | Pressure tank with a connecting branch piece with thermal protection |
| US5104155A (en) * | 1985-02-22 | 1992-04-14 | Promat Engineering Services Limited | Transition pieces |
| CN201162908Y (en) * | 2008-01-18 | 2008-12-10 | 江阴市东发管件制造有限公司 | Triplet joint with temperature-sensing and pressure-measuring port |
| CN202082534U (en) * | 2011-06-15 | 2011-12-21 | 里学集团有限公司 | Novel equal-diameter tee joint |
| CN104014916A (en) * | 2014-06-06 | 2014-09-03 | 南通国电电站阀门有限公司 | F91 valve body and 10CrMo910 tubing dissimilar steel welding method |
| CN204493957U (en) * | 2015-02-06 | 2015-07-22 | 中国海洋石油总公司 | A kind of Forged Tee pipe for natural gas line |
| CN106051352A (en) * | 2016-06-30 | 2016-10-26 | 河南光大管业有限公司 | Processing technology of reducing tee pipe fitting of large-size pressure pipeline |
-
2018
- 2018-08-01 CN CN201810862204.4A patent/CN108843866A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2109915A (en) * | 1936-02-27 | 1938-03-01 | Standard Oil Co | Tubular connection |
| US2981556A (en) * | 1957-05-16 | 1961-04-25 | Bonney Forge & Tool Works | Welding stress-free outlet fitting |
| US3342209A (en) * | 1963-08-21 | 1967-09-19 | Hiltscher | Unsymmetrical connection-piece nozzle |
| US3392994A (en) * | 1966-06-16 | 1968-07-16 | Bonney Forge & Foundry Inc | Connector means for pressure pipelines |
| DE2305424A1 (en) * | 1973-02-03 | 1974-08-22 | Mannesmann Roehren Werke Ag | Connecting pipe for welding to pressure vessels - with smooth transition to welded flange |
| US5104155A (en) * | 1985-02-22 | 1992-04-14 | Promat Engineering Services Limited | Transition pieces |
| EP0293721B1 (en) * | 1987-06-04 | 1991-05-29 | Siemens Aktiengesellschaft | Pressure tank with a connecting branch piece with thermal protection |
| CN201162908Y (en) * | 2008-01-18 | 2008-12-10 | 江阴市东发管件制造有限公司 | Triplet joint with temperature-sensing and pressure-measuring port |
| CN202082534U (en) * | 2011-06-15 | 2011-12-21 | 里学集团有限公司 | Novel equal-diameter tee joint |
| CN104014916A (en) * | 2014-06-06 | 2014-09-03 | 南通国电电站阀门有限公司 | F91 valve body and 10CrMo910 tubing dissimilar steel welding method |
| CN204493957U (en) * | 2015-02-06 | 2015-07-22 | 中国海洋石油总公司 | A kind of Forged Tee pipe for natural gas line |
| CN106051352A (en) * | 2016-06-30 | 2016-10-26 | 河南光大管业有限公司 | Processing technology of reducing tee pipe fitting of large-size pressure pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697653A (en) * | 2019-11-16 | 2020-01-17 | 中化泉州石化有限公司 | Safety structure for improving reliability of high-temperature collecting furnace tube and operation method |
| CN112780849A (en) * | 2021-01-05 | 2021-05-11 | 中国石油大学(北京) | Unequal wall thickness pipeline with internal transition section and design method |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181120 |
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| RJ01 | Rejection of invention patent application after publication |