CN101270841B - Internal coating continuous pipe with cooling trough flange and its connection method - Google Patents
Internal coating continuous pipe with cooling trough flange and its connection method Download PDFInfo
- Publication number
- CN101270841B CN101270841B CN2007100882670A CN200710088267A CN101270841B CN 101270841 B CN101270841 B CN 101270841B CN 2007100882670 A CN2007100882670 A CN 2007100882670A CN 200710088267 A CN200710088267 A CN 200710088267A CN 101270841 B CN101270841 B CN 101270841B
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- Prior art keywords
- flange
- welding
- cooling
- pipeline
- cooling bath
- Prior art date
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- Expired - Fee Related
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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
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
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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
- F16L23/00—Flanged joints
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/026—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes by welding
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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
- F16L23/00—Flanged joints
- F16L23/12—Flanged joints specially adapted for particular pipes
- F16L23/125—Flanged joints specially adapted for particular pipes with an internal or external coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/10—Pipe-lines
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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
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/40—Special arrangements for pipe couplings for special environments
- F16L2201/44—Special arrangements for pipe couplings for special environments sterile
Abstract
The invention relates to a flange. A cooling slot (4) is mounted on the sealed surface (8) of the flange; at least one cooling hole (9) is mounted on the back side (6) of the flange; the cooling hole (9) penetrates through the flange and communicates with the cooling slot (4). The flange of the invention suits for the corrosion resistance prevention at various metal pipeline joints which contain the corrosive media. The invention also relates to the pipeline which is provided with the flange of the invention and the connection method. The connection method for the pipeline of the invention is capable of avoiding the destruction of the heat input for the corrosion resistance layer inside the pipeline during welding, so that the integrity of the corrosion resistance layer inside the pipeline is ensured and the whole pipeline is guaranteed with good anti-corrosion performance.
Description
Technical field
The present invention relates to a kind of flange, the flange that particularly a kind of convenience is cooled off in welding process has the connecting means of the pipeline and the above-mentioned pipeline of this flange.
Background technique
Metallic conduit is owing to good mechanical property, manufacturing process maturation are widely adopted.But the etching problem of the metallic conduit especially corrosion of pipeline junction can't effectively be solved always.The butt-welded method of many employings during the steel pipe construction.The pipe coupling performance that this method connects is good, and cost is low, and is easy and simple to handle, good seal performance.But the joint welding temperature is up to more than 1,000 degree, and the interior anticorrosive coat of pipeline around welded joint all can be destroyed usually, and the weld bond place has just become naked pipe, and whole pipeline that has interior anticorrosive coat often formed big negative electrode primary anode, quickens corrosive pipeline.So, if not carrying out repaired mouth, the zone that anticorrosive coat is destroyed in around weld seam and the weld seam handles, in use tend to preferentially be corroded, cause the loss of leakage and stop work and production.
At present, the effective equipment and the method that also lack the postwelding internal joint patch.Especially can be embedded in underground 50 years incorrosive sprayed ceramic pipelines and the more intense plastic-coated steel of corrosion resistance for being known as, the protection question of welded joint is its principal element of applying of restriction always.
Summary of the invention
In order to overcome deficiency of the prior art; the invention provides a kind of flange, it has good intensity and sealability, and convenient is cooling off to protect inner coating when being welded to connect; therefore be fit to various welded pipe lines, for example the connection of oil, feed channel.
An aspect of of the present present invention provides a kind of flange, and it is provided with cooling bath on sealing surface, and is provided with at least one cooling hole at the back side of this flange, and this cooling hole penetrates described flange and is communicated with described cooling bath.
In a preferred embodiment, described cooling bath forms such as circle, screw type or other curve shape, circular around the center hole of described flange.
In another preferred embodiment, the shape of cross section of described cooling bath is such as semicircle, rectangle, half elliptic random geometry, and is preferred semicircle.
In some preferred embodiment, the sealing surface of described flange can adopt seal form such as plane type, male and fomale(M﹠F) formula, tongue and groove formula or ring joint face formula.
In other preferred embodiment, the outer rim of the sealing surface of described flange is provided with groove.
In specific embodiments of the present invention, described flange is selected from the flange of band neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange, integral (type) flange or other type.
Flange of the present invention is owing to have cooling bath, therefore can weaken the conduction of heat when being welded to connect to flange inner wall, thereby the heat input is to the destruction of pipeline internal corrosion layer when avoiding welding, thereby guarantee the integrity of pipeline internal corrosion layer, have good antiseptic property to guarantee pipeline integral body.
Another aspect of the present invention provides the pipeline that has flange of the present invention.
In a preferred embodiment, described side opposite scribbles anticorrosion undercoating.
The present invention also provides the method that connects pipeline of the present invention, may further comprise the steps:
(1) sealing surface of the flange of the pipeline that two needs are connected is coaxial docking, and applies Bond at the sealing surface place and carry out gluing;
(2) in cooling bath, inject cooling fluid by the cooling hole of one of them flange, and discharge cooling fluid from the cooling hole of another flange;
(3) weld along the outer rim of the sealing surface of two flanges, two flanges are linked into an integrated entity;
(4) welding finishes back discharge cooling fluid;
(5) the perfusion sealing compound makes it to be full of whole cooling bath in cooling bath.
Description of drawings
Fig. 1 is the generalized section of a preferred embodiment of flange of the present invention.
Fig. 2 is the generalized section of another preferred embodiment of flange of the present invention.
Fig. 3 is the schematic perspective view of a preferred embodiment of pipeline of the present invention.
Fig. 4 is the schematic representation of a preferred embodiment of pipe connecting method of the present invention.
Fig. 5 is the schematic representation of another preferred embodiment of pipe connecting method of the present invention, and wherein flange facing is the male and fomale(M﹠F) formula.
Fig. 6 is the schematic representation of another preferred embodiment of pipe connecting method of the present invention, and wherein flange facing is the tongue and groove formula.
Embodiment
As shown in Figure 1, provide a kind of flange in a preferred embodiment of the invention, be provided with cooling bath 4 on its sealing surface 8, be provided with at least one cooling hole 9 at the back side 6 of flange, cooling hole 9 penetrates described flange and is communicated with cooling bath 4.
As shown in Figure 2, for convenience of being welded to connect between the flange, preferably the outer rim at flange facing is provided with groove 5.The perfusion of cooling fluid also can be connected with cooling tube 10 on cooling hole 9 for convenience.
Described cooling bath can only be distributed in the part of sealing surface, also can be distributed on the whole sealing surface, can be interrupted, and also can be continuous.In order to realize even cooling, and make things convenient for flowing of cooling fluid, preferred cooling bath forms continuous curve around the center hole of flange.
In a preferred embodiment, cooling bath is around the curve of center hole formation such as circle, screw type or other shape of flange.For easy to process, cooling bath is preferably formed the circle of sealing.
The present invention is to the not strict requirement of the sectional shape of cooling bath, and the geometrical shape of any routine can be used, and for example semicircle, rectangle, half elliptic, triangle, trapezoidal or the like also can be the geometric figures that various random curves surround.In a preferred embodiment, the shape of cross section of cooling bath is selected from semicircle, rectangle and half elliptic.Consider the convenience of processing, and to the influence of strength of flange and stress etc., more preferably sectional shape is semicircle.
The concrete size of cooling bath can be according to the conditional decisions such as demand, pipeline bearing requirements and pipeline strength designing requirement of blocking-up welding heat to the conduction of inner-walls of duct direction.
The position of cooling hole and quantity can be blocked welding heat to the demand of inner-walls of duct direction conduction and the requirement design of evenly pouring into sealing compound according to cooling fluid.
The concrete size of flange of the present invention can be chosen according to the requirement of anticorrosive coat and pipeline configuration safety design in the protection.Flange of the present invention can and cohere with another flange by welding and combine, and therefore bolt hole can be set.
The making of flange of the present invention can be carried out in job shop, also can carry out at the pipeline construction scene, and preferred job shop carries out, and is convenient to the processing of undercoating etc., can be at the pipeline construction scene two or several flange windings of the present invention be become length arbitrarily.
Can make by the conventional flange of any related domain at flange of the present invention, include but not limited to be with neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange, integral (type) flange or other type flange.
In a preferred embodiment, according to the requirement of cooling needs and strength of flange, sealing surface is provided with at least two cooling baths.
In another preferred embodiment, be positioned at hollow circular-tube that the opening at the flange back side connects suitable length as cooling tube 10 in cooling hole 9, make this cooling tube be communicated with cooling bath.
As shown in Figure 3, another preferred embodiment of the present invention provides a kind of pipeline that comprises flange of the present invention, and it comprises the person in charge 1 and flange 2.Wherein be responsible at least one end of 1 and be connected with flange 2.
Be responsible for and mainly be meant metallic conduit, for example steel pipe particularly is applicable to pipeline large-scale, that be used for conveying material, for example the gas transmission oil transport pipeline.According to the needs of actual engineering, the material of flange can be identical with its person in charge's material that is connected, also can be inequality.In order to guarantee the flowability of fluid in the pipeline, preferred flange internal diameter is identical with person in charge's internal diameter that it is connected.
Flange is connected with the mode of being responsible for by welding.For guaranteeing welding quality, should accomplish fluently groove in advance at weld.After the above-mentioned person in charge's pipeline and the flange back side or the welding of band neck end finish, use methods known in the art after the internal surface to the person in charge and flange carries out preservative treatment, implement the connection of two flanged joint structures again.
The manufacturing of the person in charge of the present invention and flange must meet relevant technical requirements and manufacturer's standard.Wherein, be responsible for and the coaxality of flange is one of key index that influences joint quality, in order to guarantee to be responsible for coaxality and the parallelism with flange, the equipment that can use always by related domain is grouping mouthpart etc. as simple on-site assembler, pipeline.
As shown in Figure 4, provide a kind of connection to comprise the method for the pipeline of flange of the present invention in the another preferred embodiment of the present invention, comprised the steps:
(1) sealing surface of the flange 2 of the pipeline that two needs are connected is coaxial docking, and the cooling bath 4 of two flanges is cooperatively interacted, and applies Bond 13 at the sealing surface place and carry out gluing;
(2) in cooling bath 4, inject cooling fluid by the cooling hole 9 of one of them flange, and discharge cooling fluid from the cooling hole 9 of another flange;
(3) weld along the outer rim of the sealing surface of two flanges, two flanges are linked into an integrated entity;
(4) welding finishes and fully cools off the back and discharge cooling fluid;
(5) after fluid to be cooled fully volatilized, the perfusion sealing compound made it to be full of whole cooling bath in cooling bath 4.
Employed cooling fluid can be the various cooling fluid products of market circulation among the present invention, as all gases or fluid product, is preferably liquid coolant, more preferably water.
In a preferred embodiment, employed Bond is an elastic binder.
The used sealing compound of the present invention can be a sealing compound general on the market, is preferably the epoxy resin that can satisfy performance index shown in the following table 1.
Table 1 epoxy resin mechanical property requirements scope
| Mechanical property | Scope | Preferably |
| Compression strength | >10MPa | >20MPa |
| Interface shear strength | >2MPa | >10MPa |
| Interface tensile strength | >5MPa | >10MPa |
| Young's modulus | >100MPa | >1GPa |
The speed of perfusion sealing compound must guarantee can finish in the operating time at sealing compound the perfusion of required sealed dose.
In order further to set forth related material of present technique and construction process, provided following embodiment.But these embodiments should not be construed as by any way and limit the scope of the invention.
1. material is prepared
(1) seamless steel pipe that to select two sections specifications are Φ 133 * 5 is as the person in charge, and the two butt tube oral thermometer faces of being responsible for pipelines are processed into groove.
(2) as shown in Figure 2, make two identical band neck welding neckflanges, the internal diameter of flange is 123mm, external diameter 250mm, flange thickness 50mm.Flange facing 8 outer rims are provided with groove 5.Neck tube that flange is with 7 long 100mm, neck flange thickness of pipe wall 5mm, the neck tube end is provided with groove.Flange facing 8 is a plane type.Offer a circular cooling bath 4 on the flange facing 8, its shape of cross section is semicircle.Cooling groove width 12mm, dark 6mm.Cooling hole 9 diameters that are communicated with the cooling bath 4 and the flange back side 6 are 4mm.Cooling tube 10 that length is 50mm of cooling hole 9 openings welding at the flange back side.
2. be responsible for the group of flange and be connected reaching
As shown in Figure 3, it is right to be responsible for 1 and 2 groups of flange with one, group to the time should be specifically noted that and be responsible for coaxial with flange that this step is answered strict control accuracy.
Group is keeping being responsible for the welding with the neck tube part with flange institute, formation weld seam 12 under the coaxial situation to the back.Make Piping component after the welding, described Piping component is made of a person in charge and a flange.
3. the interior preservative treatment of Zhu Guaning
Person in charge's internal surface and flange internal surface 3 to Piping component carry out preservative treatment on request: spraying modified epoxy phenolic resin, thickness is 125-225 μ m.Wherein, priming paint and finish paint carry out thickness detection and outward appearance detection respectively.Solidify after leak source detect qualified after, just can carry out next process.
Be responsible for and the welding of flange and interior anticorrosionly in the frock workshop, carry out.
4. the butt joint of Piping component and cohering
As shown in Figure 4, will be right through interior antiseptic two Piping component groups, smearing binder 13 on the flange facing of two Piping components bonds, the product cold welding AB3602 glue (shear strength 25MPa) of selecting United Taide Adhesives Co., Ltd., Beijing herein for use is as binder, 5 minutes operating times.Process just can be carried out next process after treating that Bond solidified fully in about 4 hours.When docking two flanges, make the stagger hoop angles of 180 degree of the position of two cooling tubes 10 on the flange.
5. two flanges is welded to connect
In cooling bath 4, pour into cooling fluid by the cooling tube on the flange 10.Under cooling fluid flows normal situation, carry out the hoop welding along the outer rim of two flange facings, form weld seam 11.
6. perfusion sealing compound
Make a cooling hole on the pipe joint component parts of combining be positioned at the below of pipeline, the another one hole is positioned at the top of pipeline, with the hole that is positioned at the below as fill orifice, with the hole that is positioned at the top as exhaust port.Adopt hand pump to pour into sealing compounds to cooling bath 4 by the cooling tube 10 that is welded on the fill orifice.Select for use epoxy resin as sealing compound herein.Described epoxy resin is the JX-1 epoxy resin (compressive strength: 54.3MPa that China Irrigation Works and Hydroelectric Foundation Engineering Bureau produces; Bonding strength: 3.5N/mm
2Pressure-proof elasticity modulus: 4.6Gpa; Viscosity: 9.8mPa.s), the operating time is 90 minutes, overflows epoxy resin until the cooling fluid pipe that is welded on the exhaust port that is positioned at the top, stops perfusion.
After 7 days, epoxy resin solidifies fully.Cooling tube on the excision flange with described each hole of screw sealing, is made internal coating continuous pipe joint of the present invention.
7. the testing property of piping flange joint structure
The internal coating continuous pipe flanged joint structure that present embodiment is made is carried out full-scale bursting test in kind according to the conventional method of related domain, two ends connect with the electric welding of elliposoidal steel end socket, the circular hole about two diameter of phi 20,27mm is bored at the two ends of pipeline respectively, respectively with the 20# bar interface tube of two long 120mm of welding rod welding as exhaust port, water inlet, water intake joint screw thread size M27 * 1.5 wherein; Exhaust port joint screw thread size M20 * 1.5.
In sample, behind the perfusion full water, pressurize step by step.Pressure process is: at first be forced into 3MPa to sample, pressurize is 10 minutes then; Be forced into 4MPa again, pressurize is 10 minutes then, again by every grade of further supercharging of 1.0MPa, and every grade of pressurize 10 minutes, boost to 20MPa, stop test.
In process of the test, the flanged joint structure does not have any difference and occurs.
Referring to Fig. 5, present embodiment has used the of the present invention flange of sealing surface as the male and fomale(M﹠F) formula, and other parameter and operation are with embodiment 1.The advantage of this scheme is to be responsible for sealability to improve.
Referring to Fig. 6, present embodiment has used the of the present invention flange of sealing surface as the tongue and groove formula, and other parameter and operation are with embodiment 1.The advantage of this scheme is that the flanged joint structural group improves quality, is responsible for sealability and improves.
Some preferred embodiment of the present invention has below exemplarily been described.And will be understood by those skilled in the art that under the prerequisite that does not depart from inventive concept of the present invention and spirit and can make various equivalents or modification to it.And the technological scheme that so obtains also should belong to scope of the present invention.
Claims (16)
1. a flange is characterized in that, is provided with cooling bath (4) on the sealing surface (8) of described flange, is provided with at least one cooling hole (9) at the back side (6) of described flange, and described cooling hole (9) penetrates described flange and is communicated with described cooling bath (4).
2. flange according to claim 1, wherein said cooling bath (4) forms the curve shape that is selected from circular and screw type around the center hole of described flange.
3. flange according to claim 2, wherein said cooling bath (4) forms circular curve shape around the center hole of described flange.
4. flange according to claim 1, the shape of cross section of wherein said cooling bath (4) is selected from semicircle, rectangle and half elliptic.
5. flange according to claim 4, the shape of cross section of wherein said cooling bath (4) are semicircle.
6. according to the described flange of arbitrary claim among the claim 1-5, the sealing surface of wherein said flange (8) adopts the seal form that is selected from plane type, male and fomale(M﹠F) formula, tongue and groove formula and ring joint face formula.
7. according to the described flange of arbitrary claim among the claim 1-5, the outer rim of the sealing surface of wherein said flange (8) is provided with groove (5).
8. flange according to claim 6, the outer rim of the sealing surface of wherein said flange (8) is provided with groove (5).
9. according to the described flange of arbitrary claim among the claim 1-5, wherein said flange is selected from band neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange and integral (type) flange.
10. flange according to claim 6, wherein said flange are selected from band neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange and integral (type) flange.
11. flange according to claim 7, wherein said flange are selected from band neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange and integral (type) flange.
12. flange according to claim 8, wherein said flange are selected from band neck welding neckflange, hubbed clip-on-welding flange, slip-on-welding plate flange and integral (type) flange.
13. a pipeline comprises the person in charge (1), at least one end of the wherein said person in charge (1) is connected with the described flange of arbitrary claim among the claim 1-12.
14. pipeline according to claim 13, wherein said side opposite scribbles anticorrosion undercoating.
15. connect the method for claim 13 or 14 described pipelines, may further comprise the steps:
(1) sealing surface (8) of the flange of the pipeline that two needs are connected is coaxial docking, and locates to apply Bond at sealing surface (8) and carry out gluing;
(2) in cooling bath (4), inject cooling fluid by the cooling hole (9) of one of them flange, and discharge cooling fluid from the cooling hole (9) of another flange;
(3) weld along the outer rim of the sealing surface (8) of two flanges, two flanges are linked into an integrated entity;
(4) welding finishes back discharge cooling fluid;
(5) the perfusion sealing compound makes it to be full of whole cooling bath in cooling bath.
16. method according to claim 15, wherein the sealing surface (8) with described flange uses anchor clamps that two flanges are applied pretightening force when being coaxial docking.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100882670A CN101270841B (en) | 2007-03-22 | 2007-03-22 | Internal coating continuous pipe with cooling trough flange and its connection method |
| PCT/CN2008/000326 WO2008113248A1 (en) | 2007-03-22 | 2008-02-05 | Flange with cooling groove, pipeline with said flange and connecting method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100882670A CN101270841B (en) | 2007-03-22 | 2007-03-22 | Internal coating continuous pipe with cooling trough flange and its connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270841A CN101270841A (en) | 2008-09-24 |
| CN101270841B true CN101270841B (en) | 2010-12-08 |
Family
ID=39765372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100882670A Expired - Fee Related CN101270841B (en) | 2007-03-22 | 2007-03-22 | Internal coating continuous pipe with cooling trough flange and its connection method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101270841B (en) |
| WO (1) | WO2008113248A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5364561B2 (en) * | 2009-12-22 | 2013-12-11 | 株式会社東芝 | Flange fastening portion and flange fastening portion cooling system |
| ITMI20102195A1 (en) * | 2010-11-26 | 2012-05-26 | Alstom Technology Ltd | "CONNECTION SYSTEM" |
| CN102644739B (en) * | 2011-02-18 | 2015-11-25 | 新疆金风科技股份有限公司 | A kind of encapsulating method of connecting flange and wind-driven generator |
| WO2014126899A1 (en) * | 2013-02-17 | 2014-08-21 | United Technologies Corporation | Exhaust liner flange cooling |
| CN103588384A (en) * | 2013-10-15 | 2014-02-19 | 山东华鹏玻璃股份有限公司 | Cooling device of sucking disk of glassware blowing machine |
| CN103835954B (en) * | 2014-03-09 | 2017-02-01 | 西安志高罗茨风机技术有限责任公司 | Inlet fluid-infusion annular spraying device for MVR (mechanical vapor recompression) compressor |
| CN105020507A (en) * | 2015-06-27 | 2015-11-04 | 奇瑞商用车（安徽）有限公司 | Connecting flange for exhaust system of passenger car and method for preventing welding deformation |
| CN108351052B (en) * | 2016-08-23 | 2019-07-05 | 瑞内E西格曼塞图亚 | Pipeline welding junction equipment |
| CN112728241A (en) * | 2020-12-17 | 2021-04-30 | 沈阳明科控制腐蚀技术有限公司 | Anti-corrosion pipeline welding structure adopting flange connection and construction method |
| CN115090999A (en) * | 2022-07-19 | 2022-09-23 | 东风康明斯排放处理系统有限公司 | Method for welding post-treatment metal plate shell by cold welding process |
| KR102534912B1 (en) * | 2022-08-22 | 2023-05-26 | 조성진 | duplex pipe |
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- 2007-03-22 CN CN2007100882670A patent/CN101270841B/en not_active Expired - Fee Related
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| GB403932A (en) * | 1932-03-30 | 1934-01-04 | Mannesmann Ag | Improvements in or relating to the joining together of sections of metal pipe provided with one or more thin metal coverings |
| US3890483A (en) * | 1973-04-06 | 1975-06-17 | English Clays Lovering Pochin | Joints for protectively lined or coated metal pipe sections |
| CN1030284A (en) * | 1987-01-30 | 1989-01-11 | 格瑞·萨顿姆 | Welded pipe joint |
| CN2068635U (en) * | 1990-06-29 | 1991-01-02 | 王福元 | Pipe orifice sealing fitting |
| CN2230863Y (en) * | 1995-07-28 | 1996-07-10 | 袁杰 | Injective tightly sealed flange |
| DE10216175C1 (en) * | 2002-04-12 | 2003-07-24 | Stiebel Eltron Gmbh & Co Kg | Plastic vessel or pipe has internal and external casings bonded by friction-welding their differing plastic materials together in single operation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008113248A8 (en) | 2008-12-04 |
| CN101270841A (en) | 2008-09-24 |
| WO2008113248A1 (en) | 2008-09-25 |
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